Proportional control valve

[Detailed Description of the Invention]

Technical field The technological background about a proportional control valve for the present invention to adjust the flow of the fluid between two fluid organizations The proportional control valve of gods' form using a plurality of valves which operate with an electromagnet exists. For example, as those examples, there are United States patent 3.89'No. 8,471, i 4, 8'OU, and a thing shown in No. 8'78. In the proportional control valve of such a form, the magnetism which occurs by solenoid of predetermined size is inversely proportional to the opening which magnetic flux must fly and exceed to predetermined current. The conventional valve obtains the fixed magnetism which surpasses a large opening, and it is adjusting the magneto characteristic so that between an input and the strokes of a valve may become a linear relation by that cause. By making it such, the effect of an opening is made into the minimum and the level of the maximum usable Power is made into a sacrifice. This means that the stroke of a valve, therefore the flow capacity of a valve can increase only by increase of a power input of the valve which cannot be performed in many cases. - The summary of an invention In view of the above-mentioned point, the present invention is constant, and makes the opening which magnetic flux crosses that of small You also, big power by that cause is acquired, and it aims at providing the proportional control valve the length of the stroke of a valve was made to increase. An object of the present invention is for a manufacturing cost to provide further the control valve which does not become dirty easily at a low price compared with the conventional thing. That is, a control valve concerning the present invention is the 1st valve provided in a position between a fluid entrance and a fluid exit which were opened for free passage by a housing which has a hole, and; hole as fundamental composition, a fluid entrance in the; above-mentioned hole, and a fluid exit, and has the channel provided into it. And the stoppage position which prevents flowing into a fluid exit from a fluid or fluid entrance, In the 1st movable valve and the; above-mentioned hole, the 1st valve is adjoined between open positions which permit the flow, and it is one and the 2nd valve of consistency It was set up for a feast of a channel in the 1st valve, Consistency is the sleeve provided so that the 1st valve might be contacted within the 2nd valve movable between a stoppage position which prevents a flow which passes along a Was done channel, and an open position which permits the flow, and the; above-mentioned hole, A part of 2nd valve is taken and it has an electromagnet means for moving linearly a sleeve, and the; 2nd valve which have a moat <nonmagnetic portion and the magnetic end portion which opened an interval and was provided in the direction of an axis from a crestal plane of the 2nd valve, and;, A motion of the 2nd valve produces a motion of the 1st valve that produces a channel which passes along the 1st valve, produces pressure difference before and behind the 1st valve, and follows a motion of the 2nd valve, a motion of this 1st valve moves a sleeve in the same direction, and essentially between a crestal plane of the 2nd valve, and the above-mentioned end portion of the above-mentioned sleeve gives a fixed opening -- thereby -- a stroke of the 1st valve -- Electricity (C which increases without increasing an input to an inch stone means is to be made, and comes out.). EXAMPLE Hereinafter, the example of the present invention is described in detail based on the example shown in the Addendum" drawing. Proportional control valve 10 concerning the present invention is shown in Drawings 1 thru/or 3. Like illustration, this valve has housing 12 provided with hole 10. Valve seat 16 is formed in the inside of hole 14. bit object population 18 and fluid exit 20 are connected to hole 14. Entrance 18 is connected to A sump 22 via fluid pump 24 and check valve 26. Exit 20 is connected to necessary fluid organization 28. let the Reed for a+ be one or more fluid cylinders or motor by which attachment carries out equipment Well top wooden-clogs Falling of the fluid organization 28 in the car for industry. As for the 1st Valgood, point valve 30 is provided between fluid population 18 in hole 14, and fluid exit 20. The 1st valve 30 has crestal plane 32 and bottom 34. Valve seat 16 and engagement of circumference side 36 of the lower part of the 1st valve 30 are enabled. The net usable area and -1 of crestal plane 32 whose power 11 pressure fluid, as for the net usable area of bottom 34 on which good is carried out and, as for To, pressurized fluid acts, acts? It is made equal. If this usable area is made equal, the stage of explaining operation of control valve 10 will explain this meaning. The 1st valve 30 divides hole 14 into two cavities, i.e., supply cavity 37, and control Cahi ' tee 39. Being under bottom 34 of the 1st valve 30 of For-10 cavity 376 Up, control cavity 39 is on crestal plane 32 of the 1st valve 30. In the 1st valve 30, the 1st channel 38 and 2nd channel 40 are formed. the Attracted cage boiled bottom 34 from the 1st channel 6i and crestal plane 32, l? in the drop in pressure after 6fI of valve 30 to extract, and + As -- it will carry out in Work January. more -- Desired -- in order to obtain a drop in pressure -- the -- plug 42 which has 1j Juice 44 can be inserted 1st 1tt and into way 38. In around 30 valves, a drop in pressure is produced in any Lifting platform, and they are high I / pressure The:]. It comes to start lai J bottom 84. The 2nd channel No. 40 is extended at point 46 on the side of the 1st valve 30 from crestal plane 32. Point 46 is always open for free passage with fluid exit 20 regardless of the position of valve 30 within hole 14. Plug 48 which has Ollyis 50 is inserted into the 2nd channel 40, functions as plug 42 similarly, and produces an iris diaphragm / <4. The 1st valve 30 is moved by the child actor between the stoppage position where the circumference [ lower part ] side 36 engages with valve seat 16, and the open position where circumference side 36 separated from valve seat 16. A point valve and the 2nd valve 52 carried out adjoin in hole 14 at the crestal plane of the 1st valve, and good Appease which has crestal plane 53 is provided. The 2nd valve 52 is Compromise(ed) with the entrance of the 2nd channel 40, and moves linearly between open positions at the time shown with the stoppage position which prevents the flow which passes along the 2nd channel 40 in Drawing 2. The 2nd size and shape of lower part end 54 of valve 52 are designed so that flow power may arise around tip 54, as iris diaphragm R2 produces the Taneki compensation flow control covering the valve 10 whole. Control valve 10 has sleeve 56 again, and this sleeve is positioned in hole 14 and touches the crestal plane of the 1st valve 30. Sleeve 56 comprises magnetic end member 57, non-magnetic pipe-like member 58, and magnetic pipe-like member 59. magnetic end member 57 -- between crestal plane 53 of the 2nd valve 52 to them -- small -- being detached so that Listen opening 60 may arise -- 9 To. This small opening 60 is kept comparatively constant during operation of valve 10. Non-magnetic pipe-like member 58 is arranged around top part 62 of the 2nd valve 52, and when electromagnet element 64 is energized by input signal 65, it is arranged by the magnetic flux made by the element 64 so that the 2nd valve 52 can be moved. The 2nd valve 52 acts as an armature and current is pulled up by electromagnet element 64 by the Callot available and magnetic flux as already known well. 'Eft fa stone element 64 has Was packed coil 64 with cap 68. Coil 66 has surrounded partially support member 70 made by To 1 The nonmagnetic part kidnapped 74 depending on two magnetic members 72.76. It consistents in nonmagnetic portion 58 and the radial direction of sleeve 56 in the radial direction, the magnetic flux from coil 66 passes along top part 60 of magnetic member 76.59 and the 2nd valve 52, and nonmagnetic member 74 forms the loop which results in magnetic end member 57 of sleeve 56 through opening 60. Blade gold I the length of a stroke of the 1st valve 30 is increased by [ in which magnetic flux crosses ] essentially maintaining fixed and small opening 60 -- big -- it can obtain. Thereby, the channel shown by R3 in Drawing 3 between fluid population 18 and fluid entrance 20 can be obtained. Crack surface 1 valve 10 has a pair of springs 78.80 provided into hole 14. Spring 78 turns sleeve 56 to the crestal plane of the 1st valve 30, pushes it below, and on the other hand, spring 80 presses the crestal plane of the 2nd valve 52, and it is energizing it towards the 1st valve 30. He is trying, as for both springs 78.80, for opening 60 to always essentially become fixed. spring 78 -- the 1st valve 80"f -- the case where it has helped to energize towards the stoppage position, and around 30-valve pressure difference decreases -- the open position where open position Dim has the 1st partial valve -- there are no When 1 and others -- making . Operation It explains per operation of this 1ilJ fall valve 10. In the state which shows in Drawing 1, the 1st and 2nd valves 30.52 are [ both ] in the closed mountain position. Although the pressurized fluid from pump 24 fills supply cavity 37, the 1st channel 38, and control cavity 39, since there is no flow of fluid between entrance 18 and exit 20, there is no pressure effect in the 1st around 30 valve. Therefore, spring 78 maintains valve 30 in the state where it engaged with valve seat 16. Since the flow which passes along valve 10 is produced, the trigger of the electric input signal 65 is carried out, and it energizes electromagnet element 60. Coil 66 produces magnetic flux, pulls up the 2nd valve 52 upwards by that cause, and produces the flow which passes along the 2nd channel 40 as shown in Drawing 2. The quantity by which the 2nd valve 52 moves upwards is directly related to the quantity of Electricity supplied to electromagnet element 64, and Flow. The flow of the fluid in this case is a flow turned to exit 20 from entrance 18, and a reverse flow is prevented by check valve 26. the power which requires for crestal plane 32 the power which pressure difference will arise to the 1st around 30 valve, and will be applied to bottom 34 if fluid flows out of control cavity 39 -- Dog listening -- . If this pressure difference becomes beyond the biased power to the lower part of spring 78, the 1st valve 30 will move upwards from valve 1 prison 16, as shown in Drawing 3. If it becomes such, 3rd fluid opening R3 will be formed between entrance 18 and exit 20. When the 1st valve 30 moves up, sleeve 56 is Motion lambdaS Carried out in the same direction, and opening 60 is essentially located uniformly. An only change of the height of opening 60 arises by the original motion of the 2nd valve 52. It moves to the upper part and a lower part at the same time pressure difference produces the 1st valve 30, the 2nd valve 52, and sleeve 56 before and after the 1st valve 30 in actual operation. This corresponding linear motion of two valves 30 and 52 produces the position feedback characteristic in control valve 10. Position feedback is a result of variable orifice R2 formed in the entrance of the 2nd channel 40. If the pressure of the flowing fluid descends, since the pressure concerning bottom 34 declines, the 1st valve 30 will move below. If the 1st valve 30 moves below, the size of opening R3 will decrease, and the fluid which flows out of supply cavity 37 by that cause is restrained. The size of variable orifice R2 increases simultaneously, and 1 mocha applied to crestal plane 32 by that cause decreases in number. The 1st valve 30 is put on an equivalent position at the Okay. moment at a target. Such compensation movement is called a position feed bank, and when the 2nd valve 50 moves, or when around ten control valves pressure changes, it arises. Other examples Next, other examples are described. Valve 10 can be used as the multiplex control valve like three-way (threeway) and a forehand way (four way) valve, combining it two or more. In Drawing 4, two control valve 10' and 10 are put together, the three-way valve is made, and the exit of control valve 10' is connected to lead pipe 82 of organization 84. (- Several 84 is shown as liquid pressure cylinder 86, and this cylinder has piston 88 and piston rod 90 connected with necessary load.) Lead pipe 82 is connected to supply cavity 37 of 10/of Defense valves /by lead pipe 92. in Drawing 4 -- sub control valve 10' and 10 -- " -- those 1st and 2nd valves 30.52 are made into the lower part position, i.e., a stoppage position, and the flow of fluid does not have them. Therefore, the load cannot move piston 88. This corresponds to a neutral position. When the valve elements 30 and 52 become an open position, the fluid from a pump flows into cylinder 86 through lead pipe 82 and the 1st valve 10' has 10/of 2nd control valve /in the stoppage position then, piston 88 moves upwards. When control valve 10' is in a stoppage position similarly and control valve 1o is in an open position, fluid can flow out of cylinder 86 and a piston can move below. The example of Off and an Orr Wei system ml valve is shown in Drawing 5. This forehand way control valve is arranged so that four control valves 10a and 10/It, and 10c and the 10d may operate double-acting piston 94. Piston 94 is provided into liquid pressure cylinder 96, and is connected to load 100 by piston rod 98. in the position of illustration, 1st control valve 10a is opened wide, it is made for power Hita fluid to flow into chamber 104 which is on the left-hand side of piston 94 through lead pipe 102 from pump 24, and it comes out of it to it. 2nd Approval 1 valve 12 is also Dimensions -- it is opened wide, and through lead pipe 108 and return lead pipe 110, it is made for fluid , in chamber 106 formed in the right-hand side of piston 94 to flow into A sump 22, and it appears in it. In this case, although 10C110 d of 3rd and 4th control valve is made into the stoppage position, if the 1st and 2nd valves 10a and 10b are stopped and 3rd and 4th control valves 10G and 10d are opened wide, it will come to move to the direction of piston 94 or the left. This circuit control valve has the four modes. That is [ it is the 1st ], in the neutral mode, all the valves 10a and 10b and 10C510 d are closed. In the 2nd mode, the 1st and 2nd valves 10 alpha and 1011+ are opened wide as mentioned above, the 3rd and 4th valve 10c and 10d is closed, and piston 94 is To be about whether it is Motion to the direction of the right by it. In the 3rd mode, the 1st and 2nd valves 10c and 10b are closed, 10C110 d of the 3rd and 4th well are opened, and piston 94 is moved to the left. That is [ it is the 4th ], the 1st and 3rd valves 10a and 10C are closed, the 2nd and 4th valves are opened, and the piston 90 enables it for a piston to move in any direction according to the pressure difference of order in floating mode. Probably, it will be clear using proportional control valve 10 of double Grade that various combination and arrangement can be performed. With, although two examples of the" 2 present invention were described, the present invention is not limited to this.

[Brief Description of the Drawings]

Drawing 1 is a figure showing the state where both two valve elements in the 1. said valve closed with the sectional view of the control valve concerning the present invention; The figure in which Drawing 2 being a sectional view of the control valve, and showing the state where the upper valve element opened; the figure in which Drawing 3 being the sectional view and showing the state where both valve elements opened; the figure showing the valve gear in which Drawing 4 combined two control valves of Drawings 1 thru/or 3; Drawing 5 is Drawing; showing the valve gear which combined the four control valves. 14 ... Hole; 16 ... Fluid exit;18 ... Fluid population;30 ... The 1st valve (Body);38.40 ... channel;52 .. the -- ' valve of two (Body);56 - Sleeve; 57 ... Magnetic end portion; 58 ... Nonmagnetic portion; 64 [ ... Rod;82, 92 / ... Four pipe;96 / ... Liquid pressure cylinder;104.106 / ... Fluid chamber;102 / ... The 1st lead pipe;108 / ... Lead pipe / of whistle 2 /;110 / .. The 3rd lead pipe; ] ... Electromagnet means;84 ... Liquid pressure cylinder;88 ... Piston;90 Applicant for a patent Dee Completion and company (besides four persons) FIG,/ Fit A 2