CN102287559A - Diaphragm type pressure-reducing valve - Google Patents
Diaphragm type pressure-reducing valve Download PDFInfo
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- CN102287559A CN102287559A CN2011102206382A CN201110220638A CN102287559A CN 102287559 A CN102287559 A CN 102287559A CN 2011102206382 A CN2011102206382 A CN 2011102206382A CN 201110220638 A CN201110220638 A CN 201110220638A CN 102287559 A CN102287559 A CN 102287559A
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Abstract
The invention discloses a diaphragm type pressure-reducing valve, which comprises a valve body and a pressure-regulating component, wherein the left side and the right side of the valve body are provided with a high-pressure inlet and a low-pressure outlet respectively; the pressure-regulating component is arranged at one end of the valve body; the space between the valve body and the pressure-regulating component is isolated into a diaphragm cavity and a valve core cavity through a diaphragm component; a valve core in the valve core cavity is pressed against the diaphragm component in the diaphragm cavity, so that the diaphragm cavity is connected with the valve core cavity in an opening a closing way; a groove is formed at the connecting position between the diaphragm component and the valve core; a gap through which airflow can pass is formed between the valve core and the inner circumferential surface of the groove; and a sealing piece is arranged between the valve core and a diaphragm seat. The airtight seal structure of the pressure-reducing valve can ensure the tightness of the pressure-reducing valve and makes the pressure of the pressure-reducing valve accurately reset at the same time. The pressure-reducing valve is widely applied in various pneumatic systems.
Description
Technical field
The present invention 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, the valve core head that cylinder valve core bar that existing spool is generally made by rigid material and elastic material are made the semicircle sphere is formed by fixedly connecting, and forms 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, technical problem to be solved by this invention 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, diaphragm type reduction valve of the present invention, it comprises valve body, the left and right sides of described valve body is respectively arranged with high-pressure inlet and low tension outlet; The pressure regulation assembly: described pressure regulation assembly is arranged on an end of described valve body, be isolated into diaphragm chamber and spool chamber by diaphragm unit between described valve body and the described pressure regulation assembly, realize being tightly connected of diaphragm chamber and spool chamber by the diaphragm unit of the spool roof pressure in the described spool chamber in diaphragm chamber; Described diaphragm unit is provided with groove in the joint with described spool, but is provided with the gap that air feed stream passes through between the inner peripheral surface of described spool and described groove, is provided with Sealing between described spool and the described diaphragm seat.
Described diaphragm unit comprises diaphragm and the diaphragm seat that is used for fixing described diaphragm, and described diaphragm seat one end is provided with the through hole that is communicated with described diaphragm chamber, and the other end is provided with the described groove that is connected with described spool.
Described groove is cylindrical, and its diameter is greater than the diameter of described spool.
Described Sealing is an O-ring seals.
Described pressure regulation assembly comprises valve gap and pressure regulating mechanism, described pressure regulating mechanism comprises pressure adjusting spring, described pressure adjusting spring one end is pressed and is located on the described diaphragm seat, the other end is pressed and is located on the mobile pressure regulation part, described mobile pressure regulation part is threaded with a rotation pressure regulation part that stretches out described valve gap, and described rotation pressure regulation part and described valve gap are rotatably connected.
The outside sheathed adjusting pressuring knob of described valve gap, described adjusting pressuring knob inside are provided with and cooperate also the pressure regulation groove that can rotate simultaneously with described rotation pressure regulation part with described rotation pressure regulation part.
Described valve gap outside is provided with the locking framework that prevents that described pressure regulating mechanism from rotating, described 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 described valve gap end week and several gear pieces engagement of described teeth groove.Described gear piece is preferably 30-40.
Be provided with between described adjusting pressuring knob and the described valve gap and be used to make described adjusting pressuring knob to be in the positioning device of pressure adjusting and lock state, described positioning device comprises, be arranged at the location hook of described adjusting pressuring knob inside, described location hook stretches out and is provided with bending to described adjusting pressuring knob axis direction from diapire; And be arranged at described valve gap upwards all and corresponding pressure adjusting locating slot of described location hook and lock in place groove, and described location hook is pressed and is located on the described pressure adjusting locating slot, and described adjusting pressuring knob turns; Described location hook is pressed and is located at described lock in place groove, described gear piece and the engagement of described teeth groove, described adjusting pressuring knob locking.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) reduction valve of the present invention adopts and offer cylinder shape groove on the diaphragm seat, with head is that hemispheric spool carries out hermetic seal by 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 present invention has increased the quantity of gear piece, makes reduction valve only need rotate the number of degrees seldom, just reduction valve can be pressed in the lock in place groove by location hook reduction valve is locked, and makes the pressure regulation precision of filtering pressure reducing valve improve.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, below according to a particular embodiment of the invention and in conjunction with the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of diaphragm type reduction valve of the present invention;
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 a diaphragm type reduction valve of the present invention, and it comprises valve body 1, and the left and right sides of described 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 described valve body 1 upside; Described valve body 1 is isolated into the diaphragm chamber 5 on top and the spool chamber 6 of bottom with the pressure regulation assembly by diaphragm 4.Be provided with the spool 7 that can move up and down in the described spool chamber 6, fixedly connected with valve core case 14 in the bottom of described spool 7, be provided with balance spring 15 between described 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; Described diaphragm chamber 5 is surrounded by valve gap 9 and described diaphragm 4, be provided with pressure regulating mechanism in the described diaphragm chamber 5, described pressure regulating mechanism comprises pressure adjusting spring 10, described pressure adjusting spring 10 1 ends are pressed and are located on the described diaphragm seat 5, the other end press be located at a mobile pressure regulation part 11 on, described mobile pressure regulation part 11 is threaded with a rotation pressure regulation part 12 that stretches out described valve gap, and described rotation pressure regulation part 12 is rotatably connected with described valve gap 9.In the present embodiment, rotating pressure regulation part 12 is that a side end is square screw rod, the nut of described mobile pressure regulation part 11 for being threaded with it.When rotating described screw rod, described 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, described valve gap 9 outside sheathed adjusting pressuring knobs 13, described adjusting pressuring knob 13 inside be provided with cooperates with described rotation pressure regulation part 11 and can with the pressure regulation groove 130 of described rotation pressure regulation part 11 rotations.Described pressure regulation groove 130 is the square groove that cooperates with described rotation pressure regulation part 12 ends.
Described diaphragm unit comprises diaphragm 4 and is used for fixing the diaphragm seat 17 of described diaphragm 4, spool 7 roof pressures in the described spool chamber 6 are on described diaphragm seat 17, described spool chamber 6 is opened and closed with described diaphragm chamber 5 to be connected, described diaphragm seat 17 is provided with groove 51 in the joint with described spool 7, described spool 7 is pressed and is located at described groove 51 places, but be provided with the gap that air feed stream passes through between the inner peripheral surface of described spool 7 and described groove 51, be provided with Sealing 8 between described spool 7 and the described diaphragm seat, as shown in Figure 2.The cross section of described groove 51 can be for circular or square or other are special-shaped, but as long as leave the gap that air feed stream passes through between the inner peripheral surface of described groove 51 and the spool 7.Preferably, described groove 51 is a cylindrical groove, and described spool 7 is pressed and is located at described cylinder shape groove 51 places, and described groove 51 diameters are greater than the diameter of described spool 7; Be provided with the O RunddichtringO between described spool 7 and the described cylinder shape groove 51 and realize being tightly connected, described O RunddichtringO is arranged on the circumferential surface of described groove 51 bottoms.
During work, when forward rotation pressure regulation part 12(screw rod) time, mobile pressure regulation part 11(nut) moves down, under the effect of the elastic force of described pressure adjusting spring 10, fixing and the middle part diaphragm seat of its periphery of diaphragm 4 17 times is prominent, thereby spool 7 by interlock, making spool 7 drive valve core case 14 moves down, the increase of the valve opening area that forms between valve body 1 and the valve core case 14 increases the gas flow by valve opening, exports 16 pressure and raises the described rotation pressure regulation of backward rotation part 12(screw rod) time, mobile pressure regulation part 11(nut) moves on, the valve opening area reduces, and reduces by the valve opening gas flow, exports 16 pressure and descends.When rotating described rotation pressure regulation part 12(screw rod) when pressure adjusting spring 10 is resetted, move on the spool 7, high-pressure inlet 2 and low tension outlet 3 are isolated, the gas of low voltage side enters in the diaphragm chamber 5 by the slit between spool 7 and the diaphragm seat 17, be communicated with atmosphere by the exhaust port on diaphragm chamber 5 sidewalls, pressure is reset to zero.
As Fig. 3, shown in Figure 4, be provided with the locking framework that prevents that described adjusting pressuring knob 13 from rotating between described adjusting pressuring knob 13 and the described valve gap 9, described locking framework comprises, be arranged at least one teeth groove 131 on described adjusting pressuring knob 13 internal surfaces, and be arranged at that make progress described 9 weeks of valve gap and several gear pieces 91 131 engagements of described teeth groove.Be provided with between described adjusting pressuring knob 13 and the described valve gap 9 and be used to make described adjusting pressuring knob 13 to be in the positioning device of pressure adjusting and lock state, described positioning device comprises, be arranged at the location hook 132 of described adjusting pressuring knob 13 inside, described location hook 132 stretches out and is provided with bending to described adjusting pressuring knob axis direction from diapire; And be arranged at 9 weeks of described valve gap upwards and described location hook 132 corresponding pressure regulate locating slot 92 and lock in place grooves 93.Described location hook 132 is an elasticity location hook 132.
When needing adjusting reduction valve pressure, described location hook 132 pressures are located at described pressure and are regulated on the locating slot 92, and described adjusting pressuring knob 13 rotates and drives the adjusting of described rotation pressure regulation part 11 rotations carrying out pressure; After setting up setting pressure, misroute movingly in order to prevent adjusting pressuring knob, described location hook 132 pressed be located at described lock in place groove 93, at this moment, described gear piece 91 inserts in the teeth groove 131 and described teeth groove 131 engagements, described 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 described adjusting pressuring knob 13, and every group is provided with 3 teeth groove respectively, and the exterior edge face of described valve gap 9 is provided with and described teeth groove 131 shapes, corresponding 36 gear pieces 91 of size.Be located at described lock in place groove 93 when described location hook 132 pressures, described gear piece 91 meshes with described teeth groove 131, described adjusting pressuring knob 13 lockings.The present invention has increased the quantity of gear piece 91, makes reduction valve only need rotate 10 degree, reduction valve can be locked, and the pressure regulation precision of reduction valve improves.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.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 described valve body (1) are respectively arranged with high-pressure inlet (2) and low tension outlet (3);
The pressure regulation assembly: described pressure regulation assembly is arranged on an end of described valve body (1), be isolated into diaphragm chamber (5) and spool chamber (6) by diaphragm unit between described valve body (1) and the described pressure regulation assembly, realize being tightly connected of diaphragm chamber (5) and spool chamber (6) by the diaphragm unit of spool (7) roof pressure in the described spool chamber (5) in diaphragm chamber; It is characterized in that:
Described diaphragm unit is provided with groove (51) in the joint with described spool (7), described spool (7) and described groove (51) but inner peripheral surface between be provided with the gap that air feed stream passes through, be provided with Sealing (8) between described spool (7) and the described diaphragm seat.
2. diaphragm type reduction valve according to claim 1 is characterized in that:
Described diaphragm unit comprises diaphragm and the diaphragm seat (17) that is used for fixing described diaphragm (4), and described diaphragm seat (17) one ends are provided with the through hole that is communicated with described diaphragm chamber (5), and the other end is provided with the described groove (51) that is connected with described spool (7).
3. diaphragm type reduction valve according to claim 1 and 2 is characterized in that:
Described groove (51) is cylindrical, and its diameter is greater than the diameter of described spool (7).
4. according to the arbitrary described diaphragm type reduction valve of claim 1-3, it is characterized in that:
Described 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:
Described pressure regulation assembly comprises valve gap (9) and pressure regulating mechanism, described pressure regulating mechanism comprises pressure adjusting spring (10), described pressure adjusting spring (10) one ends are pressed and are located on the described diaphragm seat (5), the other end is pressed and is located on the mobile pressure regulation part (11), described mobile pressure regulation part (11) is threaded with a rotation pressure regulation part (12) that stretches out described valve gap, and described rotation pressure regulation part (12) is rotatably connected with described valve gap (9).
6. diaphragm type reduction valve according to claim 5 is characterized in that:
The outside sheathed adjusting pressuring knob (13) of described valve gap (9), described adjusting pressuring knob (13) inside are provided with and cooperate also the pressure regulation groove (130) that can rotate simultaneously with described rotation pressure regulation part (11) with described rotation pressure regulation part (11).
7. according to claim 5 or 6 described diaphragm type reduction valve, it is characterized in that:
Described valve gap (9) outside is provided with the locking framework that prevents that described pressure regulating mechanism from rotating, described 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 described valve gap (9) end week and several gear pieces (91) described teeth groove (131) engagement.
8. diaphragm type reduction valve according to claim 7 is characterized in that:
Described gear piece (91) is 30-40.
9. according to the arbitrary described diaphragm type reduction valve of claim 5-8, it is characterized in that:
Be provided with between described adjusting pressuring knob (13) and the described valve gap (9) and be used to make described adjusting pressuring knob (13) to be in the positioning device of pressure adjusting and lock state, described positioning device comprises, be arranged at the inner location hook (132) of described adjusting pressuring knob (13), described location hook (132) stretches out and is provided with bending to described adjusting pressuring knob axis direction from diapire; And be arranged at described valve gap (9) week upwards and the corresponding pressure of described location hook (132) regulate locating slot (92) and lock in place groove (93), described location hook (132) is pressed and is located on the described pressure adjusting locating slot (92), and described adjusting pressuring knob (13) is rotatable; Described location hook (132) is pressed and is located at described lock in place groove (93), described gear piece (91) and described teeth groove (131) engagement, described adjusting pressuring knob (13) locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102206382A CN102287559A (en) | 2011-08-03 | 2011-08-03 | Diaphragm type pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102206382A CN102287559A (en) | 2011-08-03 | 2011-08-03 | Diaphragm type pressure-reducing valve |
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| Publication Number | Publication Date |
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| CN102287559A true CN102287559A (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102206382A Pending CN102287559A (en) | 2011-08-03 | 2011-08-03 | Diaphragm type pressure-reducing valve |
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| CN (1) | CN102287559A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672060A (en) * | 2013-12-17 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Pneumatic reducing valve with overflow function |
| CN103672018A (en) * | 2013-12-17 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Pneumatic reducing valve of seal structure and arranged between diaphragm member and valve element |
| CN104132169A (en) * | 2014-08-07 | 2014-11-05 | 江南工业集团有限公司 | Low-temperature gas cylinder pressure stabilizing valve |
| CN105465078A (en) * | 2015-12-25 | 2016-04-06 | 吴忠仪表有限责任公司 | Novel single-channel gas pressure controller |
| CN105909845A (en) * | 2016-05-26 | 2016-08-31 | 宁波新佳行自动化工业有限公司 | Novel pressure adjusting valve |
| CN106949271A (en) * | 2017-05-04 | 2017-07-14 | 芜湖市海联机械设备有限公司 | A kind of gas valve |
| CN108302209A (en) * | 2017-12-26 | 2018-07-20 | 慈溪市安迈思气动元件有限公司 | A kind of locking convenience and reliable throttle valve |
| 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 |
| CN110608305A (en) * | 2018-06-15 | 2019-12-24 | 芜湖美的厨卫电器制造有限公司 | Gas valve device and gas water heater |
| CN112682548A (en) * | 2020-11-23 | 2021-04-20 | 河南航天液压气动技术有限公司 | Pressure reducing valve and pressure regulating method thereof |
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| CN101603599A (en) * | 2008-06-10 | 2009-12-16 | 藤仓橡胶工业株式会社 | Reduction valve |
| CN201448496U (en) * | 2009-06-19 | 2010-05-05 | 张家和 | Low-pressure reducing valve |
| CN201651466U (en) * | 2010-01-14 | 2010-11-24 | 威海博胜气动液压有限公司 | Air pressure relief valve for railway locomotive air supply systems |
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2011
- 2011-08-03 CN CN2011102206382A patent/CN102287559A/en active Pending
Patent Citations (6)
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| CN2262147Y (en) * | 1995-12-09 | 1997-09-10 | 中外合资浙江新益空压机有限公司 | Pressure reducing valve |
| JP2001099011A (en) * | 1999-09-28 | 2001-04-10 | Honda Motor Co Ltd | Fuel gas supplying device and fuel gas pressure reducing device |
| CN101201128A (en) * | 2007-11-14 | 2008-06-18 | 宁波亚德客自动化工业有限公司 | Pressure regulating valve |
| CN101603599A (en) * | 2008-06-10 | 2009-12-16 | 藤仓橡胶工业株式会社 | Reduction valve |
| CN201448496U (en) * | 2009-06-19 | 2010-05-05 | 张家和 | Low-pressure reducing valve |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672060A (en) * | 2013-12-17 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Pneumatic reducing valve with overflow function |
| CN103672018A (en) * | 2013-12-17 | 2014-03-26 | 重庆川仪自动化股份有限公司 | Pneumatic reducing valve of seal structure and arranged between diaphragm member and valve element |
| CN104132169A (en) * | 2014-08-07 | 2014-11-05 | 江南工业集团有限公司 | Low-temperature gas cylinder pressure stabilizing valve |
| CN105465078A (en) * | 2015-12-25 | 2016-04-06 | 吴忠仪表有限责任公司 | Novel single-channel gas pressure controller |
| CN105909845A (en) * | 2016-05-26 | 2016-08-31 | 宁波新佳行自动化工业有限公司 | Novel pressure adjusting valve |
| CN106949271A (en) * | 2017-05-04 | 2017-07-14 | 芜湖市海联机械设备有限公司 | A kind of gas valve |
| CN108302209A (en) * | 2017-12-26 | 2018-07-20 | 慈溪市安迈思气动元件有限公司 | A kind of locking convenience and reliable throttle valve |
| 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 |
| CN110608305A (en) * | 2018-06-15 | 2019-12-24 | 芜湖美的厨卫电器制造有限公司 | Gas valve device and gas water heater |
| CN110608305B (en) * | 2018-06-15 | 2024-02-20 | 芜湖美的厨卫电器制造有限公司 | Gas valve device and gas water heater |
| CN112682548A (en) * | 2020-11-23 | 2021-04-20 | 河南航天液压气动技术有限公司 | Pressure reducing valve and pressure regulating method thereof |
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Application publication date: 20111221 |