Digital flow pressure regulator

[Detailed Description of the Invention]

The present invention relates to a digital style pressure condition paragraph device. A pressurization ink-jet printing system needs to supply ink in comparatively high pressure and comparatively low Flow rate. Although the example of the pressurization ink-jet printing system is indicated by U.S. Pat. No. 3373437, in this technique, pressurization conducting fluid was ejected from the orifice of one line, and is divided in the flow of a uniform glob. Since each glob is divided from a fluid filament when ejected from the orifice to which a fluid filament corresponds, a glob may be alternatively charged with a related electrification electrode. An electrification electrode makes the line corresponding to the line of an orifice so that a fluid style may pass, and Hurry arrangement of the interval is carried out from the line of the orifice. Subsequently, a glob is passed through an electrostatic deflection electric field, and only the distance relevant to the size of electrification in each glob is deflected. A glob may be charged in 2 values, an uncharged glob is not deflected, but continues passing a deviation electric field, and carries out a shock to a recording medium for printing, and the Okay. deviation of the another side electrification glob is carried out at glob assistant Predator, i.e., a garter. The nozzle used for such the arrangement inside of the body may be a 20x10 to 3 cm diameter. Therefore, although 100 or more nozzles may be used, the full flow is quite still little. The conventional device used in such a low Flow rate state is a safe regulator or a safety valve. The example of such a system is indicated by U.S. Pat. No. 3761953. In order to make a pressure tank full of a tank in this patent so that ink may be pushed against a film or a valve, it has a larger entrance than an exit. The air of the adjusted pressure is supplied to the side opposite to membranous, and the film is closed as long as the pressure of the ink in a container is below the pressure of air. Since the input rate of ink is higher than an output factor, at a certain point, the pressure of the ink in a container exceeded the pressure of the air in a cave, opened the film or the valve, and has released pressure. Only maximum pressure power is adjusted and the fault to the valve arrangement object similar to the above or it has a drop in pressure when a safety valve is opened wide in a point rapid in comparison. This hastiness must be compensated by other pressure regulators or expansion rooms which were controlled. As a result, to the fluid processing system which has Low flow rate of ink Jinit, a system becomes very complicated, in order to be suitable. Therefore, the object of the present invention is to give the regulation-of-pressure system which was simplified for the fluid processing system which has low Flow rate and which operates smoothly. the present invention -- therefore, the pressure regulator for a low Flow rate fluid processing system is given. A regulator has two orifices and one exit. One orifice is an orifice which has puncturing of the size relevant to the amount of the fluid used from a Like exit which decreases only the pressure of the pressure source connected to the entrance of a regulator to a lower value rather than the minimum of a schedule at the exit of a regulator. The 2nd orifice is 2 value orifice similarly connected between the exits of a pressure source and a regulator, It is Something like which it has puncturing of the size relevant to the amount of the fluid used from an exit, and the pressure of the pressure source, and the main orifice and 2 value orifice have two incomes, and supplies fluid to the exit of an adjustment machine in larger stationary state pressure than the maximum of a scheduled request. The sensor is connected to the solenoid valve which connects a pressure source to an exit and 2 value orifice. If a valve is shut and the pressure of an exit reaches the minimum of a schedule when the pressure of an exit reaches the maximum of a schedule, this sensor is arranged so that a valve may be opened. With reference to Drawing 1, a pump or pressure source 10 supplies the fluid like non-Nk Genit ink which should be used on line 11. Line 11 may be connected to entrance 12 of orifice Plock 13. Orifice Plock is arranged so that it may be connected to T character part 14 to which entrance 12 points to the main orifice 16 and line 17 which can adjust fluid. Line 17 is connected to solenoid valve 18 which operates to 2 value -, and a solenoid valve ranks next and is connected to line 19. it is connected to entrance 20 of orifice Plock 13, and line 19 comes out and is -- 2 value orifice 22 which can be adjusted -- Toward -- it is once. Interconnection of the exit of orifices 16 and 22 is carried out in T character part 24, and it is connected to line 27 at exit 25. Line 27 is connected to the fluid use mechanism like A head 30 of an ink Jinit printing system. Pressure sensor 32 is similarly connected to line 27. Sensor 32 is electrically connected to solenoid valve 18 so that a solenoid valve may be operated through line 33. As a compatible structure, solenoid valve 18 and lines 17 and 19 may be physically embedded in Oifis Plock 13. the line with orifice valves 16 and 22 and solenoid valve 18 suitable as other compatible examples in which orifice Plock 13 is not given -- and it inserts in and interconnection may be carried out for suiting. In the case of the ink Jinit system, it was discovered that placing 2 value orifice 22 downstream from solenoid valve 18, and making the excessive shock by operation of solenoid into the minimum has an advantage. For example, although pressure source 10 can give the output of abbreviated 5624.6 g/Cfli, the requirements for the pressure of an ink Jinit head may be abbreviated 1124.99/d. In order to attain conditions, such as this, the main orifice is adjusted that the differential pressure of the result on line 27 of the inside of the continuation opening flow state where fluid is passed by A head 30 only through the main orifice is 1124.99/d or less than it. One example is 1117.99/Cll. Solenoid valve 18 which controls the flow which flows through 2 value orifice 22 during the above-mentioned measurement is bolted. When pressure decreases to 1124.9f!/Cd, it is switched to ON, a signal is supplied on line 33, and the pressure of sensor 32 is 1131.9f!/(by increasing to 177!, adjusted so that the signal on line 33 may be extinguished.). Solenoid valve 18 is loaded by means of a spring so that the end of a signal may close a valve and may prevent the flow of orifice 22 on line 33. If it assumes that the solenoid valve is bolted, fluid will flow into A head 30 only through the main orifice 16 which can be adjusted from pressure source 10. Therefore, the pressure on line 27 carries out Gradually reduction at 1117 or 99-/CTIL which is the minimum pressure of operation. If pressure decreases further, sensor 32 supplies an electric signal on line 33, opens solenoid valve 18, and makes fluid pass through 2 value orifice 22. The flow of this addition produces increase of the pressure on line 27 gradually. The ratio into which pressure increases may change by rotating the screw head which adjusts the size of 2 value orifice 22. 2 value orifice 22 may be larger than the main orifice 16, or may be small, or the same size may be sufficient as it. Therefore, the size of an orifice determines the range of regulation of a pressure increase rate. as opposed to ink Jinit -- the earliest standup time -- starting of an ink style -- an intermediary -- it is desirable. Regulation of the main orifice 16 has an effect which controls the ratio into which delivery pressure decreases. The signal on line 33 is terminated, a spring bolts solenoid valve 18, and sensor 32 makes flowing fluid intercept through orifice 22 by reaching maximum pressure power 1131.99/d. Change of after that in the fluid which can affect speed of Jinit, such as viscosity, control of a filter, and temperature, may be compensated by changing the pressure limitation on pressure difference sensor 32 with the signal from periodical speed sensor 40 on line 41. As a compatible example, solenoid valve 18 operates regularly, becomes independent of the sensor of other types which detect the characteristic of the fluid like the flow velocity of ink Jinit relevant to fluid pressure, and is directly operational. Orifice block 13 of the example is illustrated with reference to Drawing 2. Orifice block 13 contains entrance 12 by which the screw cutter was carried out, exit 25 by which the screw cutter was carried out, and connectors 45 and 46 by which the screw cutter was carried out. Entrance 12 and exit 25 are connected by opening 47 prolonged through Plock]C. T character part 14 connects line 47 to connecting point 45 by puncturing 48. T character part 24 connects line 47 to connecting point 46 the screw cutter was carried out by puncturing 49 of similarly. Line 47 is interrupted by puncturing 50 in which orifice pin 51 which can be adjusted may be inserted. Line 49 is similarly interrupted by puncturing 52 in which orifice pin 53 which can be adjusted may be inserted. The connection body by which the screw cutter was carried out is illustrated as a usual means to connect a fluid processing line to Plock 13. However, the suitable compatible object like a push-on connection body may be used similarly. As for orifice Plock 13, in the case of the illustrated specific structure, it uses with non-Stainless steel orifice pins 51 and 53 for example, is preferred that it is plastic Plock like acetal or a polypropylene plastic. A pin fits into puncturing 50 and 52, respectively, and, thereby, forms a pressure seal about the fluid in line 47 or 49. The hole vacancy of the main orifice 16 is carried out into pin 51, and the hole vacancy of the 2 value orifice 22 is carried out through pin 53. Regulation of the size of an orifice is performed by only rotating each pin 51, head 55 of 53, or 56, and shutting orifice 16 in Plock 13, or the portion of 22. Although it was discovered that this structure operates satisfactorily about an ink Jinit system, some compatible arrangement objects like a needle valve may be used.

[Brief Description of the Drawings]

Drawing 1 is a schematic diagram of the fluid processing system incorporating the pressure regulator of the present invention. 10 ...... A pressure source, 13 ...... [ ...... 2 value orifice which can be adjusted, 30 / ...... Ink Genit Head, 32 / ...... A pressure sensor, 40 / ...... Speed sensor ] Orifice Plock, 16 ...... The main orifice which can be adjusted, 18 ...... 2 value solenoid valve, 22