Vehicle fluid change apparatus and method

<Description of related application> This application claims the priority of U.S. Patent Application No. 09/772604 filed on January 30, 2001, which is the U.S. Patent filed on November 5, 1999. This is a partial continuation of Application No. 09/435375, which is one of US Patent Application No. 08/961339 "Portable Fluid Transfer Pipes" filed on October 30, 1997. This is a continuation application.

The present invention relates to a fluid transfer pipe having a flow rate adjusting means and an adapter means connected to a fluid source, and is particularly useful for removing fluid from a device having no outlet at a convenient location. Regarding.

The present invention also relates to a device and method for draining and exchanging fluid from a vehicle reservoir or other device or device reservoir having one or more reservoirs for containing the fluid.

<Explanation of background technology> Many industrial machines and equipment require fluid replacement. Examples of these fluid changes include oil changes in motors and engines, and hydraulic oil changes in presses and elevators. There are many other examples, but what these machines and equipment generally have in common is that the fluid outlet is located in an inconvenient location. The reason for this is that when removing fluid from the sump or drainage position, the fluid outlet must be located at the bottom of the machine, as it generally utilizes the flow of gravity.

The removal process is not difficult, but it is often time consuming due to the inconvenient location of the fittings. On the other hand, many new and improved machines have a fluid circulation pump installed outside the machine or engine. In addition, some new equipment is equipped with external prelubrication devices to start lubrication of oil or fluid before starting the main equipment or engine. An example of such a pre-lubrication device is a pre-lubrication device that is generally attached to a diesel engine used in power equipment, trucks or heavy machinery, as shown in US Pat. No. 4,402,431. , The reference shall be incorporated into the present application. Furthermore, the circulation device used to raise the temperature of the hydraulic oil is also applicable to the present invention.

Furthermore, off-road heavy machinery cannot drain and replenish for long periods of time, which can lead to large amounts of fluid in the reservoir. For example, some heavy machinery can hold up to 150 gallons of oil in an engine oil sump or reservoir. Some transmission sumps can hold up to 100 gallons of transmission fluid. Some flood control oil separation tanks for power and hydraulic equipment can hold up to 500 gallons of hydraulic oil. With expensive equipment in the hundreds of thousands to millions of dollars, the cost of downtime can be enormous. Therefore, For such equipment, the ability to minimize downtime for maintenance would bring substantial economic benefits.

Furthermore, even in the case of small devices and engines, access to the fluid outlet is difficult and many require auxiliary means to remove the fluid. An example is a marine engine. Some small devices must be rotated in the reverse direction to remove oil or other fluids. For this, US Pat. Nos. 4526782, 5257678 and 4977978 can be referred to.

Therefore, it is an object of the present invention to provide a portable fluid transfer tube that can easily remove fluid away from the discharge port. It is also an object of the present invention to provide a tube used for fluid transfer, made to fit a discharge port and capable of remotely controlling the flow of fluid from an engine or equipment. Another object of the present invention is to provide a portable transfer tube including fluid pumping means for drawing fluid from a machine or engine. A further object of the present invention is to provide an adapter means for connecting a fluid transfer tube to a fluid outlet port. Another object of the present invention is to provide an adapter connector for connecting an exhaust means for purging or removing a part of a fluid from a flow path and a filter of a machine. Yet another object of the present invention is an apparatus and method capable of facilitating the removal of fluid in one or more fluid reservoirs and allowing rapid removal and replacement of fluid. Is to provide. These objectives save time and improve efficiency for the operator as the fluid can be removed or replaced at a higher flow rate. In addition, fluid discharge and exchange can be controlled from a remote location, creating a safer environment and minimizing fluid spills. In addition, the fluid can be exchanged remotely, which contributes to noise reduction, and the engine compartment can include more fixed noise shields.

<Gist of the invention> Generally, the present invention comprises a portable fluid transfer tube having at least one flexible tube for fluid. Generally, the tube is made of rubber, polymer material, stainless steel braid, etc. As the most typical example, the tube may be made of polyethylene or polypropylene. The tube includes an inlet port and an outlet port. The inlet port can be connected to the discharge port of a fluid source such as an engine sump, a hydraulic oil sump, a transmission sump, or a front lubrication pump. In one preferred embodiment of the invention, the inlet port is provided with a coupler that connects the tube to the discharge port of the fluid source. It is most desirable to attach a quick-detachable attachment to the inlet port of the pipe and to attach a fitting that can be fitted to the pipe to the discharge port.

At a position adjacent to the outlet port of the pipe, a flow control means for controlling the flow of fluid passing through the pipe from a fluid source such as an engine sump is provided. In one preferred embodiment, the flow control means includes an actuator electrically connected to a means of pumping fluid from a fluid source, such as a pre-lubrication pump used in a diesel or internal combustion engine. In this embodiment, the flow control actuator includes removable electrical connection means to control the pump means.

In the preferred second embodiment, the flow control means comprises a pump that pumps the fluid of the fluid source into the tube. Actuators include electrical means such as battery packs, electrical wall outlets, and connectors to external sources such as vehicle and equipment batteries. As for the electrical connection, a detachable electrical connection device is used as in the case of the first embodiment. For battery packs or portable power supplies, the pump should be driven by a lightweight dc or ac motor and be equipped with a small, lightweight rechargeable battery pack as part of the flow control means. The pump may be portable or handheld.

In another embodiment of the invention, a tube with a female or male connector is used to connect to a pneumatic source such as an air gun. The tubing is equipped with fixtures on the line between the pre-lubrication pump and the system filter. Use this fixture before removing oil from the system to clean the oil flow path, and at least part of the oil from the filter to simplify oil removal and make the operator safer. Is desirable before removing.

In yet another embodiment of the invention, the flow controller includes a pump that selectively pumps fluid from multiple fluid reservoirs, such as reservoirs that store fluid for engines, hydraulic systems and / or transmissions. When there are three fluid reservoirs, for example a three-position control valve, the pump is selectively connected to three pipes that communicate with each sump of the engine, hydraulics and transmission. The pump can be deployed in the engine or vehicle and can be portable or handheld.

Other embodiments include a first pump fluid-connected to the engine oil reservoir and a second pump fluid-connected to a plurality of other fluid reservoirs such as hydraulic reservoirs and transmission reservoirs. Each of these pumps can be deployed in an engine or vehicle and may be portable or handheld.

In addition to pumps deployed on engines or vehicles, external pumps can also be used as part of an integrated system of fluid work. The external pump may be, for example, a drainage pump mounted on a refueling work truck or lube track, or may be located on a refueling truck or a separate portable pipe, eg, a pressure control valve. It may be a pump that is used exclusively to supply new replacement oil to the engine.

Although the present invention facilitates fluid removal from machines, engines, hydraulic systems and the like, other advantages of the present invention will also be apparent by reference to the description and drawings of desirable embodiments of the present invention. It will be a thing.

<Detailed description of the invention> With reference to FIGS. 1 and 2, a portable fluid transfer pipe (10) having an inlet port (11) and an outlet port (12) is shown. A flexible tube (13) extends flexibly between the inlet port (11) and the outlet port (12). The tube (13) is preferably made of natural or synthetic rubber material, braided stainless steel, or polymer extruded material such as polyethylene or styrene.

A connector (14) is attached to the entrance (11). As shown, the connector (14) is the male side fitting end of the quick-detachable connector, which is shown in more detail in FIGS. 5 and 6. The connector (14) may be any type of connector, such as a screw-in or bayonet connector. However, it is desirable that the fixture be compatible with the outlet of the fluid source. Bypasses or connecting means can be easily inserted into the pressure side of the pump in devices such as the pre-lubrication pump as shown in US Pat. No. 4502431, and the oil flow direction is from the engine to the fluid transfer pipe (10). Can be changed to. An embodiment will be described below with reference to FIGS. 5 and 6.

The flow control means (16) is arranged adjacent to the exit port (12). An embodiment of the flow control means may include a valve that is actuated by a switch (17) to electrically or mechanically control the flow of fluid through the pipe. This embodiment is useful when the fluid source is not equipped with pumping means and / or when the fluid is gravitationally transferred. On the other hand, when means such as a pre-lubrication device are used, it is desirable that the flow control means (16) be a passage through a pipe provided with a sealable switch (17). The switch (17) is electrically connected to the electrical connector (19) by a conductor (18), which is connected to the pump circuit to start the pump and control the flow of fluid. It is connected. When the flow control means (16) has an electric valve, the conductor (18) and the connector (19) are for activating a power source such as a battery terminal, a magnetic switch, a relay contact, a pump means. It is connected to other electrochemical means.

It is easy to drain a fluid such as oil or hydraulic oil from a part of the equipment, connect the connector (14) to the outlet of the pump and activate the flow control switch (17) to start the pump. , Or the flow of gravity may be used. It should be noted that valves are not required when pre-lubrication pumps are used, for example, as in US Pat. No. 4502431. The outlet port of the fluid transfer pipe (10) is provided at a convenient remote location, and the fluid is discharged to the waste oil storage container. Such waste oil storage containers are known in the art and generally include containers or work vehicles designed to receive and transport waste oil and contaminated fluids in vehicles.

In another desirable embodiment shown in FIGS. 3 and 4, the fluid transfer pipe (20) is a pipe (23) having an inlet port (21) and an outlet port (22), the inlet port (21) being connected. Contains the ingredient (24). The fitting is preferably the fitting fitting shown in FIGS. 5 and 6. The flow control means (26) of this embodiment preferably includes a small suction section, a diaphragm, a piston or a reciprocating pump, and includes a battery pack inside. The flow control means (16) includes a start switch (27), which is a protective tool (29) and a grip means (29) to facilitate holding the discharge end of the fluid transfer pipe (20). The form of a "trigger switch" having 31) is desirable. In addition, for example, when a long transfer pipe having a length of 20 to 30 feet is used, it is desirable to arrange the pump adjacent to or in the vicinity of the connecting means (14).

Many types of small portable pumps (28) are commercially available. Many pumps are suitable for heavy or viscous fluids, but cannot be operated on battery power. In such cases, power cables such as conductor (18) and connector (19) are used similarly in this embodiment. Generally, the required power is supplied from the battery of the vehicle, and the ac pump is connected to the ac outlet. Small pumps are particularly useful in the consumer market, and large pumps are particularly applicable in the industrial market.

With reference to FIGS. 5 and 6, desirable embodiments of connecting means (14) (41) are shown. The connecting means (14) (41) are applicable to both embodiments of the fluid transfer pipe shown in FIGS. 1 and 3. The connector (41) is connected to the engine oil port (not shown), while the connector (14) is attached to the pipe (10). This connector is widely known in the art and includes a male side quick connection fitting (30) and a female side matable quick connection fitting (32). An electrical receptor (33) that accepts the electrical connector (19) is also shown. The connector can also include a detection means (33) indicating that the sump is in a dry state and a pump stop signal. The illustrated cap (34) is intended to protect the receptor (33) during use. As shown in FIGS. 5 and 6, the receptor (33) and the attachment (32) are attached to the bracket (36). Brackets (36) are connected to a fluid source (37), such as a pre-lubrication pump, unless otherwise indicated. In this embodiment, the fixture (32) is connected to the outlet side or high pressure side of the fluid source system. For pre-lubrication systems, the fixture (32) is deployed on the high pressure pump discharge line between the pump and the engine.

Figure 6 shows a sampling port (39), which is used to sample oil in a pre-lubrication system where fluid flows to (37) by a pre-lubrication pump. This has the advantage of being able to provide a live sample of oil without running the engine.

As shown in FIG. 7, an additional fixture (40) is attached to an external air source (42). The fixture (40) is preferably a female side fixture that can be connected to an air supply source (not shown). By attaching an air source to the fixture (40) before or during the removal of oil from the engine, the oil remaining on the line is removed to the sump and at least some of the oil in the filter system is removed. Especially when the oil is hot, the filter can be easily removed. Generally, the pressure of the air source is preferably about 90-150 psi.

For example, in the case of a vehicle or other equipment having an engine reservoir (105), a hydraulic oil reservoir (107), a transmission fluid reservoir (109), the more such fluid discharge work positions are relatively close to each other, the better. It was found that effective discharge work was carried out and the risk of environmental pollution was reduced. For example, if the drainage positions of such reservoirs are within about 3-10 feet of each other, the drainage operation can be done by a single worker in a much shorter time. Also, when there is only one work area, the environmental pollution caused by fluid spills during the connection and disconnection of several lines and fluid containers will be greatly reduced.

FIG. 8 illustrates an embodiment of a system (100) with one pump and multiple reservoir tubes. By using this system, for example, engine reservoirs (105), hydraulic oil reservoirs (107), and transmissions or other fluid reservoirs (109) of machines, vehicles or other devices were attached to brackets (173). Quick connection<u style="single">Possible exit</u>Ejection in port (112) or control panel (150) described below<u style="single">port</u>It is quickly discharged through (153). Each of the pump (128) and the reservoirs (105) (107) (109) is connected to the control valve (116) through the network of pipes (113). The pump (128) may be a discharge-only pump or an engine pre-lubrication pump. In the pipe network, the first end (402) is connected to the hydraulic oil reservoir (107) by the first connector (406), and the second end (408) is controlled by the first connector (404). Includes a first tube (400) connected to (116). Similarly, in the second pipe (410), the first end (414) is connected to the engine reservoir (105) by the first connector (416), and the second end (412) is connected to the second connector (412). It is connected to the control valve (116) by 418). In the third tube (420), the first end (422) is connected to the transmission reservoir (109) by the first connector (426) and the second end (424) is connected by the second connector (428). It is connected to the control valve (116). In the fourth pipe (430), the first end (432) is connected to the pump (128) by the first connector (436), and the second end (434) is exited by the second connector (438). It is connected to port (112). In the fifth pipe (461), the first end (463) is connected to the pump (128) by the first connector (467) and the second end (465) is controlled by the second connector (469). It is connected to the valve (116).

The control valve (116) is preferably a 3-position, 4-port directional valve. The valve controls the connection of the pump (128), along with the pipes (410) (400) (420) leading to the reservoirs (105) (107) (109) respectively. The control valve (116) has one default position, which is preferably the engine sump (105) position. The control valve (116) is operated from a remote bracket (173), for example by an electric discharge switch attached to the connector (172), and the pump (128) by a toggle-type selection switch (174). be able to.

Regarding the operation of the system shown in FIG. 8, which of the reservoirs (105), (107), and (109) is fluidly connected to the pump (128) via the piping network (113) is determined by the control valve (116). It will be understood that it will be done. Specifically, the selection switch (174) determines the position of the control valve (116). The switch connected by the connector (172) acts as an on / off switch for the pump (118) and is either attached to the bracket (173) or tethered switch connected to the connector (172). Can be attached to.

During operation, the selection switch (174) adjusts the position of the control valve (116) to determine which of the reservoirs (105) (107) (109) to drain. When the switch connected to the connector (172) is energized, a voltage is applied to the pump (128) to bring the line (461) to a negative pressure, which activates the control valve (116). The fluid in the reservoirs (105) (107) (109) is fluid connected to the control valve (116), and the fluid is sucked into the line (461) via the pump (128), line (430). And discharged through a connector (112) to a suitable container or fluid line.

FIG. 9 illustrates an electrical circuit diagram for an embodiment of a system with one pump and multiple reservoirs. The relay switch (158) is connected to the motor (162) of the pump (128), and when the start switch connected at (172) is activated and power is supplied from the DC power supply, the pump motor (162) Is started and stopped. When the flow of any of the pipes (400), (410), and (420) becomes small during discharging, the sensor (180) detects the state, and the relay switch (158) stops the motor. The control valve (116) is electrically operated via two solenoids (164) (166) connected to the selection switch (174). The selection switch (174) is connected to the start switch connected in (172). The start switch connected by (172) is preferably a single-pole normal open switch, and the selection switch (174) is preferably a single-pole double-throw switch.

Although FIG. 8 shows three reservoirs, the number of reservoirs is not limited to three. For example, in an embodiment having N reservoirs, there are N reservoir tubes connecting each reservoir to the control valve, as in tubes (400) (410) (420) of FIG. The pipe (461) is a pump pipe that connects the control valve (116) to the pump (128). The pipe (430) is an outlet pipe that connects the pump (128) to the outlet port (112). For N reservoirs, the control valve (116) has one default position and N-1 positions activated by the selector.

The control valve (116) can also be operated from a centralized position such as an operation panel. In an embodiment in which one operation panel (150) is provided at a remote position with respect to one pump, an ignition switch and a switch for sampling ports for engine fluid, transmission fluid, and hydraulic fluid, as shown in FIG. In addition, it includes a switch for starting the pump (128) and control valve (116). On the other hand, the selection switch (152) of the operation panel (150) is connected to the control valve (116), and this switch can select the reservoir to be discharged. The operation panel (150) is also provided with a discharge control switch (154), an emergency discharge stop switch (156), and the like.<u style="single">Depot</u>Tote (153) (for example, connected to line (430))<u style="single">When</u>Connection / disconnection with pump (128)<u style="single">Is done</u>.. The operation panel (150) is further provided with a transmission oil sampling port (50), an engine oil sampling port (52) and a hydraulic oil sampling port (54), which are connected to the transmission, engine and hydraulic reservoirs, respectively. Will be done. The operation panel (150) also has an oil filter (56) with an oil inlet line (44), a transmission oil filter, a fuel filter (58), a fuel separator (60), a hydraulic oil filter, a remote ignition selector (62). ) And the ignition switch (64) can be included. However, it should be understood that the operating panel need not include all switches and the like, but may include only switches for the discharge system. In this way, all replacement work of the vehicle or engine fluid can be performed, for example at the position of the control panel (150).

An embodiment of the electric circuit diagram of the operation panel of FIG. 10 is shown in FIG. The motor relay (76) is connected to the pump motor (80) connected to the pump (128), and when the start switch (154) is activated, the pump motor (80) is started and the emergency stop switch (80) is activated. When 156) is activated, the pump motor (80) is stopped. The relay switch (76) stops the motor when a drop in flow condition is detected during discharge. The discharge selection switch (152) is electrically connected to the start switch (154) and the emergency stop switch (156), and is a solenoid valve coil (65) for a hydraulic oil reservoir and a solenoid valve coil (67) for a transmission oil reservoir. ) Can be operated to selectively discharge the hydraulic oil reservoir (107) and the transmission reservoir (109). The default position in this figure is the drain of the engine oil reservoir (105), but it is understood that any reservoir may be selected as the default position and the number of reservoirs is not limited to three. Will be done.

As shown in FIG. 12, the lines (410) (420) (430) are connected to the corresponding check valves (170) (170') (170''), respectively, around the pump (128). Like the check valve (170'''), it allows fluid to flow in only one direction. If necessary, the line (439) (shown by the dotted line in FIG. 11) is equipped with a suitable valve mechanism around the pump (128) connected to the quick-detachable connector (440). In that case, a truck lubrication pump (160) can be used to drain the fluid. The truck pump (160) discharges fluid to the truck waste tank (470) through a fixed line (472) or a quick attachment / detachment line (474). If the pump (128) is used and the truck pump (160) is not used, the pipe (460) will pass through a fixed pipe or quick attachment / detachment line (474) via a suitable valve mechanism to the truck waste tank (470). ) Is connected.

13 to 17 show an example of a system (200) having two pumps and a plurality of reservoir pipes, wherein the system (200) is fluid-connected to the engine reservoir (505). It includes a pump (230) and a second pump (228) fluidized to a hydraulic oil reservoir (507) and a transmission reservoir (509). However, more pumps can be used or connected to different reservoirs, which will be understood to be within the spirit and scope of the present invention. In this embodiment, the first pump (230) is operated by an electric switch connected to a connector (372) of a remote bracket (373) or an electric switch provided on an operation panel (250). Drain engine oil through the outlet port (312). The first tube (520) has a first end (522) connected to the engine reservoir (505) by a first connector (524) and a second end (526) by a second connector (528). It is connected to the first pump (230). In the second pipe (530), the first end (532) is connected to the first pump (230) by the first connector (534), and the second end (536) is connected to the second connector (538). Is connected to the first exit port (312). The outlet port (312) is connected to a pipe for pre-lubrication of the engine. Alternatively, the second tube (530) may be fluidly connected to the connector (251) in the control panel (250) as described below. The second pump (228) is connected to the control valve (616), and the fluid is seconded from the transmission reservoir (509) or hydraulic oil reservoir (407) by operating the selection switch (274) and the discharge switch. It is discharged to the exit port (212) of. These switches can also be deployed to the second bracket (273) together with the exit port (212). Each of the second pump (228) and the reservoirs (507) (509) is connected to the control valve (616) through the piping of the pipe (513). The pipe of pipe (513) includes the first pipe (540). In the first pipe (540), the first end (542) is connected to the hydraulic reservoir (507) by the first connector (546), and the second end (544) is connected to the second connector (548). ) Is connected to the control valve (616). The second tube (550) has a first end (554) connected to the transmission reservoir (509) by a first connector (558) and a second end (552) by a second connector (556). It is connected to the valve (616). In the third tube (580), the first end (582) is connected to the pump (228) by the first connector (586) and the second end (584) is connected to the second quick connector (588). Is connected to the exit port (212) by. Alternatively, the pipe (580) can be fluidly connected to the connector (253) of the control panel (250). In the fourth pipe (590), the first end (592) is connected to the pump (228) by the first connector (596), and the second end (594) is connected to the second quick connector (598). It is connected to the control valve (616) by. A flexible tube (315) is used to connect the outlet port (312) or (212) to the port of the lubrication truck leading to the waste oil vessel or the waste oil tank (570) of the lubrication truck, as shown in FIG. You can also do it. The control valve (616) selectively discharges the oil to the transmission reservoir (509) or the hydraulic oil reservoir (507).

FIG. 14 shows an electrical circuit diagram of a drainage system (200) with the two pumps and multiple reservoirs shown in FIG. Each pump motor (263) (262) is connected to a corresponding relay switch (258) (259), each relay switch being operated by, for example, a portable 12V or 24VDC power supply. The first and second motor relay switches (258) (259) are connected to the first and second normally open start switches (372) (272). Sensors (280) and (281) that detect a drop in flow are installed between each relay and the corresponding start switch, respectively, and when a drop in flow is detected, the corresponding motor is stopped. The power supply is connected to the second relay switch (259), the selection switch (274) and the start switch (372) (272). The two-position control valve (216) controls the flow to the hydraulic oil reservoir (507) and the transmission oil reservoir (509). There may be any reservoir in the default position, but here the hydraulic oil reservoir is shown as the default position.

It will be understood that the total number of pipes connected to the first and second pumps need not be limited to three. For example, the first pump (230) is N₁Connect to the reservoir and N the second pump (228)₂When connected to a reservoir, the total number of pumps is expressed by: N = N₁+ N₂Figure 13 shows N₁Is 1, N₂Shows the first example of the example in which is 2. In the second example of the same embodiment, N₁Is 1, N₂Is more than 2. In the second example, the control valve (616) is N like pipes (540) (550).₂It is connected to the reservoir pipe. In both examples, the second pump is connected to the control valve (616) by a pump pipe (590) and to the second outlet (212) by an outlet pipe (580).

FIG. 15 includes an example of a remote control panel (250) that includes a control unit for a drainage system with two pumps and multiple reservoirs. In this embodiment, the start switch (254), the stop switch (256), the selection switch (252), the discharge port (251) of the first pump (230), and the discharge port (253) of the second pump (228) are used. Includes. Line (900) is connected to the untreated side of the engine oil filter head, but connects to a pressure regulated air source to release used engine oil before adding replacement oil through the port. You can also do it. In the same operation panel, sample ports (910) (912) (914) for transmission, engine and hydraulic reservoirs can also be provided with remote ignition selectors (918) and ignition switches (916).

FIG. 16 shows an embodiment of an electrical circuit diagram for the panel of FIG. The pump motors (963) (962) of the pumps (230) (228) are connected to the corresponding relay switches (958) (959), respectively, and each relay switch is operated by, for example, a 12V or 24V DC power supply. .. The first motor relay switch (958) and the second motor relay switch (959) are connected to a selection switch (252) and a normally closed emergency stop switch (256). Flow rate drop detection sensors (280) and (281) are installed between each relay and the emergency stop switch (256), and when a flow drop state is detected, each motor stops. The selection switch (252) is connected to the valve coil (966) and the normally open start switch (254). FIG. 16 shows an electrical wiring diagram of the transmission oil reservoir, where the selection switch (254) is connected to the contact represented by the letter "T". The hydraulic reservoir and the engine reservoir are connected to the contacts "H" and "E" of the selection switch (966), but the wiring display is omitted.

FIG. 17 is a hydraulic circuit diagram of an embodiment of a drainage system having two pumps and a plurality of reservoirs. The first pump (230) and the second pump (228) drain the fluid of each selected reservoir to the ports (251) (253). These ports are provided on the brackets (373) and (273) or are connected to the connectors (251) and (253) on the control panel (250). The flow from each reservoir (505) (507) (509) is controlled by a check valve downstream of each reservoir and is directed in one direction. Check valves (705) (707) (709) are connected downstream of the engine oil reservoir (505), the hydraulic oil reservoir (507) and the transmission oil reservoir (509), respectively. A check valve (720) is provided at the bypass line (711) of the first pump (230), and a check valve (722) is provided at the bypass line (712) of the second pump (228). The control valve (216) controls the flow to the transmission oil reservoir (509) and the hydraulic oil reservoir (507), and the hydraulic oil reservoir (507) is shown at the specified position shown in the figure. Bracket connectors (212) (312) or control panel connectors (251) (253) are connected to a discharge container or a pipe (315) provided on a truck with a lubrication pump. In that case, the fluid is drained through a suitable valved line (360) around the truck's pump (160) or drained directly into the reservoir (570). Alternatively, it is understood that the pumps (230) and (228) can be suctioned and discharged by the pump (160) of the refueling truck by providing the bypass lines (574) and (576) and appropriate valve mechanisms, respectively. Will be done. The fluid is then drained directly into the reservoir (507) of the truck with a lubrication pump via a fixed line (372) or a quick-detachable line (374).

A system with one pump and multiple reservoirs was described with reference to FIGS. 8-12, and a system with two pumps and multiple reservoirs was described with reference to FIGS. 13-17. Both systems attach drain pipes to their respective reservoirs, select a control valve for the reservoir, activate a pump and pump fluid from the selected reservoir to the outlet port from any reservoir on the vehicle. , Can be used to remove fluid. The replacement fluid can also be accommodated in a suitable cavity after drainage from the selected reservoir. As schematically shown in FIG. 18, a pipe (972) is attached to the exchange fluid pipe (974) via a connector (976), and the pipe (972) is attached to the filter head (970) of the accommodating portion. It is connected to the unprocessed side of. The connector (976) is connected to a replacement fluid source (978). For example, the engine oil enters the embodiment line (44) of FIG. 10 or the embodiment line (900) of FIG. 15, both of which are in front of the oil filter head. It should be understood that the fluid containment corresponding to the other reservoirs described herein can also be replenished by feeding a replacement fluid to the untreated side of each filter in such fluid containment.

Numerous advantages of the present invention are demonstrated in the aforementioned embodiments, including systems and methods for rapidly draining selected reservoirs of vehicles. With a high discharge rate of 90 gallons per minute, it can significantly reduce downtime and achieve significant economic benefits. Emissions are carried out in a controlled manner towards the target and are sent directly through the pipes to the vehicle's fluid system, minimizing leakage and eliminating the need to remove existing insulation shields. Furthermore, the present invention can be used exclusively for drainage work, or can be used as a comprehensive fluid work system including fluid drainage, oil filter purging and fluid replacement.

All drawings, especially the hydraulic and electrical schematics of FIGS. 9, 11, 12, 14, 14, 17, and 18, are provided for illustrative purposes only, not as structural diagrams. It should be understood that there is. Omissions and changes in details or other embodiments are also included within the scope of those with conventional skills in the art. Further, since the specific examples of the invention are described for the purpose of exemplifying the present invention and not for the purpose of limiting the invention, a person having ordinary knowledge in the art. If so, it is understood that various changes to the details, materials and arrangement of parts can be made within the principles and scope of the invention without departing from the invention described in the claims. Let's go.

<figref num="1">It is a side view of one Example of the tube system for a single reservoir of this invention.</figref><figref num="2">It is a top view of the Example shown in FIG. 1, and shows a connector.</figref><figref num="3">FIG. 5 is a plan view of another embodiment of the present invention having a pump integrally included in the flow control means.</figref><figref num="4">It is a side view of the Example shown in FIG.</figref><figref num="5">It is a figure which shows the connector used in this invention.</figref><figref num="6">It is a figure which shows the connector used in this invention.</figref><figref num="7">It is the schematic which shows the pipe and the connector for oil discharge.</figref><figref num="8">It is a figure which shows the Example of the system which has a plurality of reservoir pipes.</figref><figref num="9">It is an electric circuit diagram of the system of FIG.</figref><figref num="10">It is a front view of the operation panel of a fluid discharge system.</figref><figref num="11">It is an electric circuit diagram of the system of FIG.</figref><figref num="12">It is a hydraulic circuit diagram of a fluid discharge system.</figref><figref num="13">It is the schematic of the system which has two pumps and a plurality of reservoir pipes.</figref><figref num="14">It is an electric circuit diagram of the system of FIG.</figref><figref num="15">It is a front view of another operation panel used for a fluid discharge system.</figref><figref num="16">It is an electric circuit diagram of the system of FIG.</figref><figref num="17">It is a hydraulic circuit diagram of the fluid discharge system which has a plurality of pumps.</figref><figref num="18">It is a schematic diagram which shows the pipe system for exchange fluids.</figref>