CN202158238U - Diaphragm type reducing valve - Google Patents
Diaphragm type reducing valve Download PDFInfo
- Publication number
- CN202158238U CN202158238U CN2011202795414U CN201120279541U CN202158238U CN 202158238 U CN202158238 U CN 202158238U CN 2011202795414 U CN2011202795414 U CN 2011202795414U CN 201120279541 U CN201120279541 U CN 201120279541U CN 202158238 U CN202158238 U CN 202158238U
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- diaphragm
- pressure
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- spool
- groove
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Abstract
The utility model discloses a diaphragm type reducing valve, which comprises a valve body. The left side of the valve body and the right side of the valve body are respectively provided with a high-pressure inlet and a low-pressure outlet. A pressure regulation assembly is arranged at one end of the valve body, the space between the valve body and the pressure regulation assembly is divided into a diaphragm cavity and a valve core cavity by a diaphragm assembly, and the diaphragm cavity is connected with the valve core cavity in sealing mode by ejecting a valve core in the valve core cavity on the diaphragm assembly in the diaphragm cavity in pressing mode. A groove is arranged at the connecting position of the valve core and the diaphragm assembly, a gap for air flow to pass through is arranged between the valve core and the inner circumferential surface of the groove, and a sealing element is arranged between the valve core and a diaphragm seat. An airtight structure of the reducing valve can ensure sealing performance of the reducing valve, and simultaneously pressure reset is accurate. The diaphragm type reducing valve can be widely applied to various pneumatic systems.
Description
Technical field
The utility model relates to a kind of reduction valve that is used on the pneumatic circuit, particularly a kind of diaphragm type reduction valve.
Background technique
In the pneumatic system, reduction valve can carry out voltage stabilizing to source of the gas, makes source of the gas be in constant state, reduces when suddenling change because of source of the gas air pressure the damage to hardware such as valve or final controlling element.Existing reduction valve exists the problem of poor air-tightness; Trace it to its cause; Be because the spool of reduction valve and the hermetic seal matching problem between the diaphragm seat; Cylinder valve core bar that existing spool is generally processed rigid material and elastic material are processed the spherical valve core head of semicircle and are formed by fixedly connecting, and form the semi-round ball connected in star that cooperates with valve core head on the diaphragm seat.This hermetic seal fit system requires the machining accuracy of valve core head very high, because the formed precision of elastic material can not guarantee that the sealing between valve core head and the diaphragm seat can not guarantee.On the other hand, when the semicircle groove on valve core head and the diaphragm seat cooperated, its junction surface was very close to each other, caused its while when pressure adjusting spring resets, and when just spring force was zero, the valve core head of this reduction valve can not separate with the diaphragm seat, causes pressure not make zero.
Chinese patent file CN201748007U discloses a kind of diaphragm type reduction valve; The top roof pressure of this reduction valve spool is on the diaphragm seat; Its diaphragm seat forms the hemispherical groove that matches with spool, goes back groove that is used to place the O RunddichtringO of moulding in the hemispherical groove bottom simultaneously.Also there is following defective in this hermetic seal structure: 1, the top of spool abuts against on the diaphragm seat, and its fitting surface is very close to each other, and when pressure adjusting spring was reset to zero, the pressure of reduction valve can not make zero; 2, the complex structure of diaphragm seat, processing cost is very high.
Summary of the invention
For this reason, the utility model technical problem to be solved is to provide a kind of can guarantee sealing, simultaneously the pressure reduction valve accurately that resets.
For solving the problems of the technologies described above, the diaphragm type reduction valve of the utility model, it comprises valve body, the left and right sides of said valve body is respectively arranged with high-pressure inlet and low tension outlet; The pressure regulation assembly: said pressure regulation assembly is arranged on an end of said valve body; Be isolated into diaphragm chamber and spool chamber through diaphragm unit between said valve body and the said pressure regulation assembly, realize being tightly connected of diaphragm chamber and spool chamber through the diaphragm unit of the spool roof pressure in the said spool chamber in diaphragm chamber; Said diaphragm unit is provided with groove in the joint with said spool, but is provided with the gap that air feed stream passes through between the inner peripheral surface of said spool and said groove, is provided with Sealing between said spool and the said diaphragm seat.
Said diaphragm unit comprises diaphragm and the diaphragm seat that is used for fixing said diaphragm, and said diaphragm seat one end is provided with the through hole that is communicated with said diaphragm chamber, and the other end is provided with the said groove that is connected with said spool.
Said groove is cylindrical, and its diameter is greater than the diameter of said spool.
Said Sealing is an O-ring seals.
Said pressure regulation assembly comprises valve gap and pressure regulating mechanism; Said pressure regulating mechanism comprises pressure adjusting spring; Said pressure adjusting spring one end is pressed and is located on the said diaphragm seat; The other end is pressed and is located on the mobile pressure regulation part, and said mobile pressure regulation part is threaded with a rotation pressure regulation part that stretches out said valve gap, and said rotation pressure regulation part and said valve gap are rotatably connected.
The outside sheathed adjusting pressuring knob of said valve gap, said adjusting pressuring knob inside are provided with and cooperate also the pressure regulation groove that can rotate simultaneously with said rotation pressure regulation part with said rotation pressure regulation part.
Said valve gap outside is provided with the locking framework that prevents that said pressure regulating mechanism from rotating; Said locking framework comprises at least one teeth groove that is arranged on the adjusting pressuring knob internal surface, and is arranged at that make progress in said valve gap end week and several gear pieces engagement of said teeth groove.Said gear piece is preferably 30-40.
Be provided with between said adjusting pressuring knob and the said valve gap and be used to make said adjusting pressuring knob to be in the positioning device of pressure adjusting and lock state; Said positioning device comprises; Be arranged at the inner location hook of said adjusting pressuring knob, said location hook stretches out and is provided with bending to said adjusting pressuring knob axis direction from diapire; And be arranged at said valve gap upwards all and corresponding pressure adjusting locating slot of said location hook and lock in place groove, and said location hook is pressed and is located on the said pressure adjusting locating slot, and said adjusting pressuring knob turns; Said location hook is pressed and is located at said lock in place groove, said gear piece and the engagement of said teeth groove, said adjusting pressuring knob locking.
The technique scheme of the utility model is compared existing technology and is had the following advantages:
(1) reduction valve of the utility model is employed on the diaphragm seat and offers cylinder shape groove; With head is that hemispheric spool carries out hermetic seal through an O RunddichtringO and is connected; The fitting surface of spool and diaphragm seat has certain interval; When spring reset, gas can flow from the space between spool and the diaphragm seat.
(2) simultaneously, this spool can be one-body molded for rigid material, and its machining accuracy guarantees easily, tightness in the time of can guaranteeing reduction valve work.Reduced cost of production simultaneously.
(3) the utility model has increased the quantity of gear piece, makes reduction valve only need rotate the number of degrees seldom, just can reduction valve be pressed in the lock in place groove through location hook reduction valve is locked, and makes the pressure regulation precision of filtering pressure reducing valve improve.
Description of drawings
For the content that makes the utility model is more clearly understood,, the utility model is done further detailed explanation, wherein below according to the specific embodiment of the utility model and combine accompanying drawing
Fig. 1 is the structural representation of the diaphragm type reduction valve of the utility model;
Fig. 2 is the partial enlarged drawing that spool cooperates with the diaphragm seat;
Fig. 3 is the A-A sectional view of Fig. 1;
Fig. 4 is the partial enlarged drawing that valve gap cooperates with adjusting pressuring knob.
Reference character is expressed as among the figure:
1-valve body 2-high-pressure inlet 3-low tension outlet 4-diaphragm 5-diaphragm chamber 6-spool chamber 7-spool 8-Sealing 9-valve gap 10-pressure adjusting spring
11-moves pressure regulation part 12-and rotates pressure regulation part 13-adjusting pressuring knob 51-groove 130-pressure regulation groove 131-teeth groove 132-location hook
91-gear piece 92-pressure is regulated locating slot 93 lock in place groove 14-valve core case 15-balance spring 16-end cap 17-diaphragm seats.
Embodiment
Fig. 1 is the diaphragm type reduction valve of the utility model, and it comprises valve body 1, and the left and right sides of said valve body 1 is respectively arranged with high-pressure inlet 2 and low tension outlet 3, and the pressure regulation assembly that is connected in said valve body 1 upside; Said valve body 1 is isolated into the diaphragm chamber 5 on top and the spool chamber 6 of bottom with the pressure regulation assembly through diaphragm 4.Be provided with the spool 7 that can move up and down in the said spool chamber 6; The bottom of said spool 7 is fixedly connected with valve core case 14; Be provided with balance spring 15 between said valve core case 14 and the end cap 16,, cut off being communicated with between high-pressure inlet 2 and the low tension outlet 3 in order to when reduction valve resets; Said diaphragm chamber 5 is surrounded by valve gap 9 and said diaphragm 4; Be provided with pressure regulating mechanism in the said diaphragm chamber 5; Said pressure regulating mechanism comprises pressure adjusting spring 10, and said pressure adjusting spring 10 1 ends are pressed and are located on the said diaphragm seat 5, the other end press be located at a mobile pressure regulation part 11 on; Said mobile pressure regulation part 11 is threaded with a rotation pressure regulation part 12 that stretches out said valve gap, and said rotation pressure regulation part 12 is rotatably connected with said valve gap 9.In the present embodiment, rotating pressure regulation part 12 is that a side end is square screw rod, the nut of said mobile pressure regulation part 11 for being threaded with it.When rotating said screw rod; Said nut moves up and down along screw rod; The spring that pressure is located on the nut is depressed into biasing force on the diaphragm seat thereupon; Said valve gap 9 outside sheathed adjusting pressuring knobs 13, said adjusting pressuring knob 13 inside be provided with cooperates with said rotation pressure regulation part 11 and can with the pressure regulation groove 130 of said rotation pressure regulation part 11 rotations.Said pressure regulation groove 130 is the square groove that cooperates with said rotation pressure regulation part 12 ends.
Said diaphragm unit comprises diaphragm 4 and the diaphragm seat 17 that is used for fixing said diaphragm 4; Spool 7 roof pressures in the said spool chamber 6 are on said diaphragm seat 17; Said spool chamber 6 is opened and closed with said diaphragm chamber 5 to be connected; Said diaphragm seat 17 is provided with groove 51 in the joint with said spool 7, and said spool 7 is pressed and is located at said groove 51 places, but is provided with the gap that air feed stream passes through between the inner peripheral surface of said spool 7 and said groove 51; Be provided with Sealing 8 between said spool 7 and the said diaphragm seat, as shown in Figure 2.The cross section of said groove 51 can be for circular or square or other are special-shaped, but flow the gap of passing through as long as leave air feed between the inner peripheral surface of said groove 51 and the spool 7.Preferably, said groove 51 is a cylindrical groove, and said spool 7 is pressed and is located at said cylinder shape groove 51 places, and said groove 51 diameters are greater than the diameter of said spool 7; Be provided with the O RunddichtringO between said spool 7 and the said cylinder shape groove 51 and realize being tightly connected, said O RunddichtringO is arranged on the circumferential surface of said groove 51 bottoms.
During work, when forward rotation pressure regulation part 12 (screw rod), move pressure regulation part 11 (nut) and move down; Under the effect of the elastic force of said pressure adjusting spring 10, the fixing and middle part diaphragm seat of diaphragm 4 its peripheries 17 times is prominent, thus the spool 7 through interlock; Make spool 7 drive valve core case 14 and move down, the increase of the valve opening area that forms between valve body 1 and the valve core case 14 increases the gas flow through valve opening, exports 16 pressure and raises; During the said rotation pressure regulation of backward rotation part 12 (screw rods), move on the pressure regulation part 11 (nut) and move, the valve opening area reduces; Reduce through the valve opening gas flow, export 16 pressure and descend.When the said rotation pressure regulation part 12 of rotation (screw rod) resets pressure adjusting spring 10; Move on the spool 7; High-pressure inlet 2 is isolated with low tension outlet 3; The gas of low voltage side gets in the diaphragm chamber 5 through the slit between spool 7 and the diaphragm seat 17, and through exhaust port and the atmosphere on diaphragm chamber 5 sidewalls, pressure is reset to zero.
Like Fig. 3; Shown in Figure 4; Be provided with the locking framework that prevents that said adjusting pressuring knob 13 from rotating between said adjusting pressuring knob 13 and the said valve gap 9; Said locking framework comprises, is arranged at least one teeth groove 131 on said adjusting pressuring knob 13 internal surfaces, and is arranged at that make progress said 9 weeks of valve gap and several gear pieces 91 131 engagements of said teeth groove.Be provided with between said adjusting pressuring knob 13 and the said valve gap 9 and be used to make said adjusting pressuring knob 13 to be in the positioning device of pressure adjusting and lock state; Said positioning device comprises; Be arranged at the inner location hook 132 of said adjusting pressuring knob 13, said location hook 132 stretches out and is provided with bending to said adjusting pressuring knob axis direction from diapire; And be arranged at 9 weeks of said valve gap upwards and said location hook 132 corresponding pressure regulate locating slots 92 and lock in place grooves 93.Said location hook 132 is an elasticity location hook 132.
When needing adjusting reduction valve pressure, said location hook 132 pressures are located at said pressure and are regulated on the locating slot 92, and said adjusting pressuring knob 13 rotates and drives the adjusting of said rotation pressure regulation part 11 rotations carrying out pressure; After setting up setting pressure, misroute movingly in order to prevent adjusting pressuring knob, said location hook 132 pressed be located at said lock in place groove 93, at this moment, said gear piece 91 inserts in the teeth groove 131 and said teeth groove 131 engagements, said adjusting pressuring knob 13 lockings this moment.
Teeth groove described in the present embodiment 131 is that the center is symmetrically distributed 4 groups with the axis of said adjusting pressuring knob 13, and every group is provided with 3 teeth groove respectively, and the exterior edge face of said valve gap 9 is provided with and said teeth groove 131 shapes, corresponding 36 gear pieces 91 of size.Be located at said lock in place groove 93 when said location hook 132 pressures, said gear piece 91 meshes with said teeth groove 131, said adjusting pressuring knob 13 lockings.The utility model has increased the quantity of gear piece 91, makes reduction valve only need rotate 10 degree, can reduction valve be locked, and the pressure regulation precision of reduction valve improves.
Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to mode of execution.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (9)
1. diaphragm type reduction valve, it comprises
Valve body (1), the left and right sides of said valve body (1) are respectively arranged with high-pressure inlet (2) and low tension outlet (3);
The pressure regulation assembly: said pressure regulation assembly is arranged on an end of said valve body (1); Be isolated into diaphragm chamber (5) and spool chamber (6) through diaphragm unit between said valve body (1) and the said pressure regulation assembly, realize being tightly connected of diaphragm chamber (5) and spool chamber (6) through the diaphragm unit of spool (7) roof pressure in the said spool chamber (5) in diaphragm chamber; It is characterized in that:
Said diaphragm unit is provided with groove (51) in the joint with said spool (7); Said spool (7) and said groove (51) but inner peripheral surface between be provided with the gap that air feed stream passes through, be provided with Sealing (8) between said spool (7) and the said diaphragm seat.
2. diaphragm type reduction valve according to claim 1 is characterized in that:
Said diaphragm unit comprises diaphragm and the diaphragm seat (17) that is used for fixing said diaphragm (4), and said diaphragm seat (17) one ends are provided with the through hole that is communicated with said diaphragm chamber (5), and the other end is provided with the said groove (51) that is connected with said spool (7).
3. diaphragm type reduction valve according to claim 2 is characterized in that:
Said groove (51) is cylindrical, and its diameter is greater than the diameter of said spool (7).
4. diaphragm type reduction valve according to claim 1 is characterized in that:
Said Sealing (8) is an O-ring seals.
5. according to the arbitrary described diaphragm type reduction valve of claim 1-4, it is characterized in that:
Said pressure regulation assembly comprises valve gap (9) and pressure regulating mechanism; Said pressure regulating mechanism comprises pressure adjusting spring (10); Said pressure adjusting spring (10) one ends are pressed and are located on the said diaphragm seat (5); The other end is pressed and is located on the mobile pressure regulation part (11), and said mobile pressure regulation part (11) is threaded with a rotation pressure regulation part (12) that stretches out said valve gap, and said rotation pressure regulation part (12) is rotatably connected with said valve gap (9).
6. diaphragm type reduction valve according to claim 5 is characterized in that:
The outside sheathed adjusting pressuring knob (13) of said valve gap (9), said adjusting pressuring knob (13) inside are provided with and cooperate also the pressure regulation groove (130) that can rotate simultaneously with said rotation pressure regulation part (11) with said rotation pressure regulation part (11).
7. diaphragm type reduction valve according to claim 6 is characterized in that:
Said valve gap (9) outside is provided with the locking framework that prevents that said pressure regulating mechanism from rotating; Said locking framework comprises at least one teeth groove (131) that is arranged on adjusting pressuring knob (13) internal surface, and is arranged at that make progress in said valve gap (9) end week and several gear pieces (91) said teeth groove (131) engagement.
8. diaphragm type reduction valve according to claim 7 is characterized in that:
Said gear piece (91) is 30-40.
9. diaphragm type reduction valve according to claim 6 is characterized in that:
Be provided with between said adjusting pressuring knob (13) and the said valve gap (9) and be used to make said adjusting pressuring knob (13) to be in the positioning device of pressure adjusting and lock state; Said positioning device comprises; Be arranged at the inner location hook (132) of said adjusting pressuring knob (13), said location hook (132) stretches out and is provided with bending to said adjusting pressuring knob axis direction from diapire; And be arranged at said valve gap (9) week upwards and the corresponding pressure of said location hook (132) regulate locating slot (92) and lock in place groove (93); Said location hook (132) is pressed and is located on the said pressure adjusting locating slot (92), and said adjusting pressuring knob (13) is rotatable; Said location hook (132) is pressed and is located at said lock in place groove (93), said gear piece (91) and said teeth groove (131) engagement, said adjusting pressuring knob (13) locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202795414U CN202158238U (en) | 2011-08-03 | 2011-08-03 | Diaphragm type reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202795414U CN202158238U (en) | 2011-08-03 | 2011-08-03 | Diaphragm type reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202158238U true CN202158238U (en) | 2012-03-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202795414U Expired - Fee Related CN202158238U (en) | 2011-08-03 | 2011-08-03 | Diaphragm type reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202158238U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758943A (en) * | 2012-06-27 | 2012-10-31 | 钱立民 | Two-stage type gas pressure regulator |
| CN102943922A (en) * | 2012-10-24 | 2013-02-27 | 河南航天液压气动技术有限公司 | Pressure reducing valve |
| CN103032611A (en) * | 2012-12-12 | 2013-04-10 | 中国航天科技集团公司第六研究院第十一研究所 | Membrane supporting structure of high temperature reducing valve with limiting and aligning and adjusting effects |
| CN103672080A (en) * | 2013-12-17 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Pneumatic reducing valve with resetting device |
| CN103697203A (en) * | 2013-12-17 | 2014-04-02 | 重庆川仪自动化股份有限公司 | Pneumatic pressure reducing valve with pressure regulating device |
| CN108692039A (en) * | 2018-05-29 | 2018-10-23 | 宁波英特灵气动科技有限公司 | A kind of pneumatic throttle |
| CN110553068A (en) * | 2019-09-04 | 2019-12-10 | 梁良良 | Pressure reducing valve |
| CN112324919A (en) * | 2020-11-26 | 2021-02-05 | 江门市伊科迈特电子科技有限公司 | Composite sealing gas valve |
-
2011
- 2011-08-03 CN CN2011202795414U patent/CN202158238U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758943A (en) * | 2012-06-27 | 2012-10-31 | 钱立民 | Two-stage type gas pressure regulator |
| CN102943922A (en) * | 2012-10-24 | 2013-02-27 | 河南航天液压气动技术有限公司 | Pressure reducing valve |
| CN103032611A (en) * | 2012-12-12 | 2013-04-10 | 中国航天科技集团公司第六研究院第十一研究所 | Membrane supporting structure of high temperature reducing valve with limiting and aligning and adjusting effects |
| CN103032611B (en) * | 2012-12-12 | 2015-11-18 | 中国航天科技集团公司第六研究院第十一研究所 | A kind of have spacing and high-temperature pressure-reduction valve film supporting structure that is centering regulating action |
| CN103672080A (en) * | 2013-12-17 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Pneumatic reducing valve with resetting device |
| CN103697203A (en) * | 2013-12-17 | 2014-04-02 | 重庆川仪自动化股份有限公司 | Pneumatic pressure reducing valve with pressure regulating device |
| CN108692039A (en) * | 2018-05-29 | 2018-10-23 | 宁波英特灵气动科技有限公司 | A kind of pneumatic throttle |
| CN110553068A (en) * | 2019-09-04 | 2019-12-10 | 梁良良 | Pressure reducing valve |
| CN112324919A (en) * | 2020-11-26 | 2021-02-05 | 江门市伊科迈特电子科技有限公司 | Composite sealing gas valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120307 Termination date: 20130803 |