CN102116232B - Pressure balanced valve and pressure-retaining device comprising same for oil supply line of engine - Google Patents
Pressure balanced valve and pressure-retaining device comprising same for oil supply line of engine Download PDFInfo
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- CN102116232B CN102116232B CN2009102389507A CN200910238950A CN102116232B CN 102116232 B CN102116232 B CN 102116232B CN 2009102389507 A CN2009102389507 A CN 2009102389507A CN 200910238950 A CN200910238950 A CN 200910238950A CN 102116232 B CN102116232 B CN 102116232B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
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- 239000003921 oil Substances 0.000 description 39
- 239000000446 fuel Substances 0.000 description 25
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- 238000012797 qualification Methods 0.000 description 1
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Abstract
The invention provides a pressure maintaining device for an engine oil supply pipeline, which comprises a valve body passing through the pipeline, a valve core for regulating the opening level of the pipeline, and an iron core coil assembly for operating the valve core to regulate the opening level of the pipeline. The iron core coil assembly comprises a coil and an iron core. The pressure maintaining device also comprises a balance valve core for regulating the opening level of the pipeline, and an elastic piece for applying an action force on the balance valve core. The valve body is provided with a mounting hole communicated with the pipeline. The balance valve core is arranged in the mounting hole to divide the mounting hole into a first chamber and a second chamber. The balance valve core can slide hermetically relative to the mounting hole. A balance valve core through hole is arranged in the balance valve core to communicate the first chamber with the second chamber. The opening level of the pipeline decreases along with the decreasing of pressure in the first chamber and increases along with the increasing of pressure in the first chamber. During the operation of the engine, the pressure maintaining device ensures the pressure in the engine oil supply pipeline to be kept within a certain range. Thus, the engine can work normally.
Description
Technical field
The invention belongs to vehicle oil way pressure and regulate the field, relate in particular to a kind of pressurize device that can regulate the engine oil loine pressure automatically.
Background technique
Engine fuel system mainly comprises fuel pump, fuel filter, the oil pressure regulator of pipeline connection successively, and wherein fuel pump places fuel tank, and a passage of oil pressure regulator is connected in the fuel tank through pipeline; Like this; Fuel pump, fuel filter, oil pressure regulator, fuel tank form a system capable of circulation; Pipeline connection one between fuel pump, oil pressure regulator is connected in the pipeline of motor; Effect through fuel pump pumps into fuel oil in the motor, and oil pressure regulator is mainly used in regulates the pressure of giving the engine pump oil pipe line.
It is to lean between semispherical valve lower plane and the cylindrical tube end face closely to contact that the valve of oil pressure regulator seals.Because present stage, homemade 93# fuel oil wherein mixed indigenous oil refining inferior, wherein nano sized particles shape impurity is easy to be stuck between two sealing surfaces, causes valve to be in small unlatching shape always, and it is not enough that pipe-line system continues the pressure release build-up of pressure; Semispherical valve rotates in its valve seat and must compare flexibly in addition; Because semispherical valve and the bad control of strength when crimping of its valve seat; Causing sometimes can not rotational problems, and also can cause the pipeline pressure release this moment and the underpressure problem causes motor normally not work.
Summary of the invention
Technical problem to be solved by this invention is owing to have pressure release so that the technological deficiency of motor cisco unity malfunction to the available engine oil feed line; A kind of engine oil pipeline pressurize device is provided; Make the engine oil pipeline can remain under the normal oil pressure state, guarantee the normal operation of motor.
In order to solve above-mentioned technical problem; The present invention provides a kind of engine oil pipeline pressurize device; Wherein, Comprise the valve body that is provided with penetrating via, passage carried out spool and operation spool that aperture regulates passage is carried out the core-coil assembly that aperture is regulated that said core-coil assembly comprises iron core and coil, the magnetic force of said core-coil assembly is controlled by engine ignition switch; When engine ignition, said spool is adjusted to minimum with the valve channel aperture; After engine start finished, said spool was all opened passage under the magnetic force of core-coil assembly; Said pressurize device also comprises the elastic component that passage is carried out balance valve core that aperture regulates and balance valve core applied active force; In valve body, be provided with the pilot hole with said channel connection, said balance valve core places said pilot hole that pilot hole is divided into first chamber and second chamber, and said balance valve core can slide in said relatively pilot hole sealing; In said balance valve core, be provided with the balance valve core through hole that is communicated with said first chamber and second chamber; The aperture of said passage reduces and reduces with first chamber pressure, increases with the increase of first chamber pressure.
On valve body, be provided with perpendicular to passage and with the mounting hole of channel connection; Said mounting hole comprises first shoulder hole and second shoulder hole; Said first shoulder hole and channel connection; Said second shoulder hole is provided with internal thread, said spool place said first shoulder hole and with the first shoulder hole Spielpassung.
The pressurize device also comprises the positioning pipe that is provided with outside thread and is sheathed on said core-coil assembly, and said positioning pipe is threaded with said second shoulder hole.
Internal surface at said positioning pipe is provided with flange along circumference, the lower end surface of said flange through a bakelite packing ring and core-coil assembly against.
The pressurize device also comprises and is threaded with core-coil assembly and core-coil assembly is carried out fastening nut.
The upper-end surface of said flange through a bakelite pad and nut against.
Be provided with the diaphragm of isolating first shoulder hole and second shoulder hole in the bottom of first shoulder hole.
Between said diaphragm and said positioning pipe, be provided with the diaphragm pressing plate, be provided with circular groove towards the end face of positioning pipe, in circular groove, be provided with ball at the diaphragm pressing plate.
Said coil comprises first coil and second coil, and said two groups of coils are arranged on the iron core along different winding directions.
The pressurize device also comprises power supply, normally closed switch, first normal open switch, second normal open switch, first diode, and said power supply, first coil, first diode, second coil, first normal open switch are connected in series successively and form the closed-loop path; The said normally closed switch and first coil, first diode are connected in parallel; Said second normal open switch and said first normal open switch are connected in parallel; Said normally closed switch, second normal open switch are electrically connected respectively at ignition switch start shelves, and said first normal open switch is electrically connected with ignition switch acc shelves.
Said balance valve core comprises that the area of said first end face is greater than the area of said second end face towards first end face of first chamber and second end face that is arranged on the first end face opposite end.
The pressurize device comprises also and is threaded with pilot hole and balance valve core is carried out spacing block that said block is provided with the axial stop through hole, and said balance valve core partly places said block through hole, and can move relative to said block through hole.
The pressurize device also comprises the pressure regulation blind nut that is threaded with valve body, and said pressure regulation blind nut and said valve body, block form second chamber jointly.
Said elastic component is a spring, and an end of said spring is connected with second end face of balance valve core, and the other end is connected with the pressure regulation blind nut.
Compare with existing engine oil oil feed line pressure regulator; The present invention sets up an equilibrated valve in the engine oil pipeline; In engine operation process; Said equilibrated valve changes and the aperture of automatic regulating valve body passage with the oil pressure in the oil feed line, thereby the pressure that remains the engine oil pipeline makes and starts the function proper functioning in the certain numerical value scope.Pressurize device of the present invention can guarantee that the stage of motor after ignition phase, startup is in work under the desirable oil pressure state all the time.
Description of drawings
Fig. 1 is that engine fuel system pipeline of the present invention connects schematic representation;
Fig. 2 is the structural representation of pressurize device of the present invention;
Fig. 3 is the blast structural representation of pressurize device of the present invention;
Fig. 4 is the circuit connection diagram of pressure regulator valve of the present invention;
Embodiment
Clearer for technical problem, technological scheme and beneficial effect that the present invention is solved, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Engine oil pipeline pressurize device 3 of the present invention comprises equilibrated valve 32, pressure regulator valve 31 two-part, like Fig. 2,3 said.
In engine fuel system; Fuel pump 1, fuel filter 5, pressurize device 3, oil pressure regulator 2 pipeline successively connect, and wherein, fuel pump 1, oil pressure regulator 2 are connected with the fuel tank pipeline respectively; The traction pipeline is connected in motor 4 in the pipeline between fuel filter 5 and pressurize device 3; Regulate pressurize device 3 loine pressure between fuel pump 1 and the pressurize device 3 is increased, high pressure fuel is pumped in the motor 4, as shown in Figure 1.
Like Fig. 2, shown in 3, the elastic component that equilibrated valve 32 of the present invention comprises the valve body 33 that is provided with penetrating via 331, passage 331 is carried out balance valve core 321 that aperture regulates and balance valve core 321 applied active force; In valve body 33, be provided with the pilot hole 334 that is communicated with said passage 331; Said balance valve core 321 places said pilot hole 334 that pilot hole 334 is divided into first chamber 3341 and second chamber 3342, and said balance valve core 321 can slide in said relatively pilot hole 334 sealings; In said balance valve core 321, be provided with the balance valve core through hole 3211 that is communicated with said first chamber 3341 and second chamber 3342; The aperture of said passage 331 reduces and reduces with first chamber, 3341 pressure, increases with the increase of first chamber, 3341 pressure.The aperture of passage 331 is the degree that passage 331 is opened.
As the preferred embodiments of the present invention; Said balance valve core 321 comprises towards first end face 3212 of first chamber 3341 and second end face 3213 that is arranged on first end face, 3212 opposite ends; The area of said first end face 3212 is greater than the area of said second end face 3213, and the area of preferred said first end face 3212 is 1.2 times of area of said second end face 3213.
Said equilibrated valve 32 also comprises and is threaded with pilot hole 334 and balance valve core 321 is carried out spacing block 322; Said block 322 is provided with axial stop through hole 3221; Said balance valve core 321 parts place said block through hole 3221; And can move relative to said block through hole 3221, block 322, the valve channel 331 common balance valve cores 321 that limit can only move in certain scope, even also balance valve core 321 complete conductings or close fully in the scope of said valve channel 331.
Said equilibrated valve 32 also comprises the pressure regulation blind nut 324 that is threaded with valve body 33; Said pressure regulation blind nut 324 and said valve body 321, block 322 common second chambers 3342 that form; Said pressure regulation blind nut 324 also is mainly used in the elastic force of regulating elastic component; When pressure regulation blind nut 324 and valve body 33 engagements tighter, the active force that imposes on elastic component is big more, and pressure regulation blind nut 324 is complied with different oil feed line pressure demand and free adjusting.
Said elastic component is a spring 323, and an end of said spring 323 is connected with second end face 3213 of balance valve core 321, and the other end is connected with pressure regulation blind nut 321.The effect of spring 323 is mainly leaned in the adjusting of 321 pairs of passages 331 of balance valve core, and in the present embodiment, said spring 323 is in compressive state.
The working procedure and the working principle of equilibrated valve 32 of the present invention are following:
1), when equilibrated valve 32 does not have the situation of work, balance valve core 321 under the effect of spring 323 with passage 331 sealings 1/3.
2), engine operation; Balance valve core 321 moves down and reaches a kind of state of equilibrium, and valve channel 331 has certain aperture, at this moment; The oil pressure that oil feed line forms in the loop also reaches the desirable oil pressure demand of motor; Owing to when the problem of oil pressure regulator and pressure release, moving on the balance valve core 321 under the effect of spring 323 restoring forces, reduced the aperture of passage 331 when the engine oil pipeline; Thereby the oil pressure in the chamber 3341 of winning is increased, thereby make the oil pressure in the oil feed line return to perfect condition.
Compare with existing engine oil loine pressure controlling device; The present invention sets up an equilibrated valve 32 in the engine oil pipeline; In engine operation process; Said equilibrated valve 32 changes and the aperture of automatic regulating valve body passage 331 with the oil pressure in the oil feed line, thereby the pressure that remains the engine oil pipeline makes and starts the function proper functioning in the certain numerical value scope.
Shown in Fig. 1-4; Engine oil loine pressure modulating valve 31 of the present invention comprises the valve body 33 that is provided with penetrating via 331, passage 331 is carried out spool 319 and 319 pairs of passages of operation spool 331 that aperture regulates carries out the core-coil assembly 315 that aperture is regulated; Said core-coil assembly 315 comprises iron core 3151 and coil, and the magnetic force of said core-coil assembly 315 receives engine ignition switch 3114 controls; When engine ignition, said spool 319 is adjusted to minimum with valve channel 331 apertures; After engine start finished, said spool 319 was all opened passage 331 under the magnetic force of core-coil assembly 315.
In engine fuel system; Fuel pump 1, fuel filter 5, pressurize device 3, oil pressure regulator 2 pipeline successively connect, and wherein, fuel pump 1, oil pressure regulator 2 are connected with the fuel tank pipeline respectively; The traction pipeline is connected in motor 4 in the pipeline between fuel filter 5 and pressurize device 3; Regulate pressurize device 3 loine pressure between fuel pump 1 and the pressurize device 3 is increased, high pressure fuel is pumped in the motor 4, as shown in Figure 1.
Like Fig. 2, shown in 3; As specific embodiment of the present invention, on valve body 33, be provided with perpendicular to passage 331 and the mounting hole that is communicated with passage 331, passage 331 comprises inlet 3311 and outlet 3312; Inlet 3311 is connected with fuel filter 5 pipelines, exports 3312 and is connected with oil pressure regulator 2 pipelines; Said mounting hole comprises first shoulder hole 333 and second shoulder hole 332; Said first shoulder hole 333 is communicated with passage 331, and said second shoulder hole 332 is provided with internal thread, said spool 319 place said first shoulder hole 333 and with first shoulder hole, 333 Spielpassung; Said spool 319 can freely move up and down by relative first shoulder hole 333; Spool 319 move up and down the aperture of regulating passage 331, when first shoulder hole, 333 bottom ends limited said spool 319 and continue to move down, the aperture of said passage 331 was minimum; Be that passage 331 has only the part conducting; The demand of motor to the pipeline oil pressure depended in the setting of minimum aperture, and the oil pressure of demand is high more, and the part of passage conducting is more little; When spool 319 during by the magnetic attraction of core-coil assembly 315, the aperture of said passage 331 is maximum, i.e. passage 331 whole conductings.
Said pressure regulator valve 31 also comprises the positioning pipe 313 that is provided with outside thread and is sheathed on said core-coil assembly 315, and said positioning pipe 313 is threaded with said second shoulder hole 332.Internal surface at said positioning pipe 313 is provided with flange 3131 along circumference; The lower end surface of said flange 3131 through a bakelite packing ring 314 and core-coil assembly 315 against; 313 pairs of core-coil assemblies of said positioning pipe 315 carry out axially, radial location, limit moving of its.
Said pressure regulator valve 31 also comprises and is threaded with core-coil assembly 315 and core-coil assembly 315 is carried out fastening nut 311.
The upper-end surface of said flange 3131 through a bakelite pad 312 and nut 311 against, through bakelite packing ring 314, bakelite pad 312 being set with positioning pipe 313 and core-coil assembly 315 electrical insulations.
Be provided with the diaphragm 318 of isolating first shoulder hole 333 and second shoulder hole 332 in the bottom of first shoulder hole 333, prevent that the fluid in the passage 331 from getting in second shoulder hole 332; Said diaphragm 318 is the magnetic conduction diaphragm, and has certain elasticity, when spool 319 is attracted to move upward by core-coil assembly 315, gives spool 319 certain buffering, avoids the wearing and tearing of spool 319 component such as grade.
Between said diaphragm 318 and said positioning pipe 313, be provided with diaphragm pressing plate 317; Be provided with circular groove 3171 at diaphragm pressing plate 317 towards the end face of positioning pipe 313; In circular groove 3171, be provided with ball 316,317 pairs of diaphragms 318 of said diaphragm pressing plate position, and ball 316 can support positioning pipe 313 and rotate; During installing and locating pipe 313, can avoid positioning pipe 313 rotating band dynamic diaphragm 318 rotation and cause the broken ring of diaphragm 318.
In addition, be provided with valve core through hole 3191 at spool 319 on axially, said valve core through hole 3191 can be communicated with valve channel 331 and first shoulder hole 333, and being provided with of said valve core through hole 3191 is beneficial to spool 319 and moves up and down smoothly, reduces the resistance when mobile.
As shown in Figure 4, coil comprises first coil 3152 and second coil 3153, and said two groups of coils are arranged on the iron core 3151 along different winding directions, and first coil 3152 and second coil 3153 are connected in series.
Said pressure regulator valve 31 also comprises power supply, normally closed switch 3112, first normal open switch 3110, second normal open switch 3111, first diode 3113, and said power supply, first coil 3152, first diode 3113, second coil 3153, first normal open switch 3110 are connected in series successively and form the closed-loop path; Said normally closed switch 3112 and first coil 3152, first diode 3113 are connected in parallel; Said second normal open switch 3111 is connected in parallel with said first normal open switch 3110; Said normally closed switch 3112, second normal open switch 3111 are electrically connected respectively at ignition switch 3114start shelves, and said first normal open switch 3110 is electrically connected with ignition switch acc shelves.Said power supply is preferably Vehicular accumulator cell.Said normally closed switch 3112, first normal open switch 3110, second normal open switch 3111 are supplied power by ignition switch respectively.
The working procedure and the working principle of pressure regulator valve 31 of the present invention are following:
1), do not have under the situation of work at motor 4; Be that engine ignition switch 3114 is when being in the OFF shelves; Said first normal open switch 3110, second normal open switch 3111 break off, and said first coil 3152, second coil 3153 are in turnoff state, core-coil assembly 315 no magnetic force; Spool 319 is adjusted to minimum with valve channel 331 apertures under action of gravity, kept the oil pressure in motor 4 oil feed lines.
2), be in ignition phase at motor 4, when promptly engine ignition switch 3114 is in the start shelves, normally closed switch 3112 electric disconnection; Second normal open switch 3111 electric closure, first coil 3152, second coil 3153 be in electricity condition because first coil 3152 and second coil 3153 windings in the other direction; The magnetic flux that two coils produce on iron core 3151 is cancelled out each other; Spool 319 is not produced magnetic force, and spool 319 is adjusted to minimum with valve channel 331 apertures under action of gravity, because this moment, fuel pump 1 was oily to the pipeline pump; Make the oil pressure in motor 4 oil feed lines obtain increasing, satisfy motor 4 igniting demands.
3), when motor is in proper functioning, when promptly engine ignition switch 3114 is in the acc shelves, normally closed switch 3112 conductings; First normal open switch 3110 must conduct, and second normal open switch 3111 opens circuit, under this state; 3152 short circuits of said first coil, second coil 3153 gets electric generation magnetic force, under the effect of magnetic force; Spool 319 is attracted and moves up valve channel 331 complete openings, and the engine oil pipeline is got back under the normal pressure state.
Compare with existing engine oil oil feed line pressure regulator; The present invention sets up a pressure regulator valve 31 in the engine oil pipeline; In the engine ignition stage, said pressure regulator valve 31 is adjusted to minimum with the aperture of oil feed line, makes that the pressure moment in the oil feed line increases; To engine ignition high pressure oil is provided, has started function to light a fire smoothly.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. engine oil pipeline pressurize device; It is characterized in that: comprise the valve body that is provided with penetrating via, passage carried out spool and operation spool that aperture regulates passage is carried out the core-coil assembly that aperture is regulated; Said core-coil assembly comprises iron core and coil, and the magnetic force of said core-coil assembly is controlled by engine ignition switch; When engine ignition, said spool is adjusted to minimum with the valve channel aperture; After engine start finished, said spool was all opened passage under the magnetic force of core-coil assembly; Said pressurize device also comprises the elastic component that passage is carried out balance valve core that aperture regulates and balance valve core applied active force; In valve body, be provided with the pilot hole with said channel connection, said balance valve core places said pilot hole that pilot hole is divided into first chamber and second chamber, and said balance valve core can slide in said relatively pilot hole sealing; In said balance valve core, be provided with the balance valve core through hole that is communicated with said first chamber and second chamber; The aperture of said passage reduces and reduces with first chamber pressure, increases with the increase of first chamber pressure.
2. engine oil pipeline pressurize device as claimed in claim 1; It is characterized in that: on valve body, be provided with perpendicular to passage and with the mounting hole of channel connection; Said mounting hole comprises first shoulder hole and second shoulder hole; Said first shoulder hole and channel connection, said second shoulder hole is provided with internal thread, said spool place said first shoulder hole and with the first shoulder hole Spielpassung.
3. engine oil pipeline pressurize device as claimed in claim 2 is characterized in that: also comprise the positioning pipe that is provided with outside thread and is sheathed on said core-coil assembly, said positioning pipe is threaded with said second shoulder hole.
4. engine oil pipeline pressurize device as claimed in claim 3, it is characterized in that: the internal surface at said positioning pipe is provided with flange along circumference, the lower end surface of said flange through a bakelite packing ring and core-coil assembly against.
5. engine oil pipeline pressurize device as claimed in claim 4 is characterized in that: also comprise being threaded with core-coil assembly and core-coil assembly being carried out fastening nut.
6. engine oil pipeline pressurize device as claimed in claim 5 is characterized in that: the upper-end surface of said flange through a bakelite pad and nut against.
7. engine oil pipeline pressurize device as claimed in claim 6 is characterized in that: be provided with the diaphragm of isolating first shoulder hole and second shoulder hole in the bottom of first shoulder hole.
8. engine oil pipeline pressurize device as claimed in claim 7 is characterized in that: between said diaphragm and said positioning pipe, be provided with the diaphragm pressing plate, be provided with circular groove at the diaphragm pressing plate towards the end face of positioning pipe, in circular groove, be provided with ball.
9. engine oil pipeline pressurize device as claimed in claim 8, it is characterized in that: said coil comprises first coil and second coil, and said two groups of coils are arranged on the iron core along different winding directions.
10. engine oil pipeline pressurize device as claimed in claim 9; It is characterized in that: also comprise power supply, normally closed switch, first normal open switch, second normal open switch, first diode, said power supply, first coil, first diode, second coil, first normal open switch are connected in series successively and form the closed-loop path; The said normally closed switch and first coil, first diode are connected in parallel; Said second normal open switch and said first normal open switch are connected in parallel; Said normally closed switch, second normal open switch are electrically connected respectively at ignition switch start shelves, and said first normal open switch is electrically connected with ignition switch acc shelves.
11. engine oil pipeline pressurize device as claimed in claim 1; It is characterized in that: said balance valve core comprises that the area of said first end face is greater than the area of said second end face towards first end face of first chamber and second end face that is arranged on the first end face opposite end.
12. engine oil pipeline pressurize device as claimed in claim 11; It is characterized in that: also comprise being threaded with pilot hole and balance valve core being carried out spacing block; Said block is provided with the axial stop through hole; Said balance valve core partly places said block through hole, and can move relative to said block through hole.
13. engine oil pipeline pressurize device as claimed in claim 12 is characterized in that: also comprise the pressure regulation blind nut that is threaded with valve body, said pressure regulation blind nut and said valve body, block form second chamber jointly.
14. engine oil pipeline pressurize device as claimed in claim 13, it is characterized in that: said elastic component is a spring, and an end of said spring is connected with second end face of balance valve core, and the other end is connected with the pressure regulation blind nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102389507A CN102116232B (en) | 2009-12-31 | 2009-12-31 | Pressure balanced valve and pressure-retaining device comprising same for oil supply line of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102389507A CN102116232B (en) | 2009-12-31 | 2009-12-31 | Pressure balanced valve and pressure-retaining device comprising same for oil supply line of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102116232A CN102116232A (en) | 2011-07-06 |
| CN102116232B true CN102116232B (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102389507A Expired - Fee Related CN102116232B (en) | 2009-12-31 | 2009-12-31 | Pressure balanced valve and pressure-retaining device comprising same for oil supply line of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102116232B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4289160A (en) * | 1979-02-20 | 1981-09-15 | Kayaba Kogyo Kabushiki Kaisha | Pressure control valve |
| CN2215646Y (en) * | 1994-11-01 | 1995-12-20 | 上海医疗设备厂 | Pneumatic pressure reducer |
| US6164322A (en) * | 1999-01-15 | 2000-12-26 | Saturn Electronic & Engineering, Inc. | Pressure relief latching solenoid valve |
| CN2771598Y (en) * | 2004-12-20 | 2006-04-12 | 姚会仁 | Ball type flow balance valve |
-
2009
- 2009-12-31 CN CN2009102389507A patent/CN102116232B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4289160A (en) * | 1979-02-20 | 1981-09-15 | Kayaba Kogyo Kabushiki Kaisha | Pressure control valve |
| CN2215646Y (en) * | 1994-11-01 | 1995-12-20 | 上海医疗设备厂 | Pneumatic pressure reducer |
| US6164322A (en) * | 1999-01-15 | 2000-12-26 | Saturn Electronic & Engineering, Inc. | Pressure relief latching solenoid valve |
| CN2771598Y (en) * | 2004-12-20 | 2006-04-12 | 姚会仁 | Ball type flow balance valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102116232A (en) | 2011-07-06 |
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