CN201672091U - Micro-pressure pneumatic reversal valve with adjustable reversing pressure - Google Patents
Micro-pressure pneumatic reversal valve with adjustable reversing pressure Download PDFInfo
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- CN201672091U CN201672091U CN2010201954457U CN201020195445U CN201672091U CN 201672091 U CN201672091 U CN 201672091U CN 2010201954457 U CN2010201954457 U CN 2010201954457U CN 201020195445 U CN201020195445 U CN 201020195445U CN 201672091 U CN201672091 U CN 201672091U
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Abstract
The utility model discloses a micro-pressure pneumatic reversal valve with adjustable reversing pressure. The micro-pressure pneumatic reversal valve herein comprises an upper cavity and a lower cavity arranged inside the valve body, wherein the upper cavity is provided transversely with an upper film which divides the upper cavity into an upper film upper cavity and an upper film lower cavity, a first control air hole being arranged on the valve body and being communicated with the upper film upper cavity, a second control air hole being arranged on the valve body and being communicated with the upper film lower cavity, a baffle plate being fixedly arranged on the upper film, the valve body above the upper film being in a bolt joint with an adjusting bolt for the reversing pressure whereof an upper spring sits, the lower end part of the upper spring being abut against the baffle plate, the valve below the upper film being fixedly provided with valve seat clamping support. The utility model can integrate multiple functions within one valve, such as adjustable reversing pressure, micro-pressure reversing and micro differential pressure, and combined with high sensitivity and compact structure.
Description
Technical field
The utility model relates to a kind of position control valve that is applied in Pneumatic Transmission and the control, especially a kind of minute-pressure Pneumatic reversal valve of the adjustable in pressure that commutates.
Background technique
At present, the commutation pressure of the Pneumatic reversal valve on the market is higher, minimum commutation pressure generally about 0.2MPa, the requirement of the atmospheric control of be difficult to satisfy the demand micro-pressure signal or minute-pressure difference signal.Such as, the motor that is applied under the hazardous environments such as inflammable gas, water vapour or dust purges control system, for preventing that hazardous gas from entering motor housing and setting off an explosion, need keeping the motor housing internal pressure is malleation (generally greater than 0.5mbar less than 10mbar), must adopt the interior malleation of motor housing to realize the commutation of gas circuit as control pressure signal, and to realize different gas circuit control functions according to the difference of malleation size, at this moment just need an extremely low and adjustable minute-pressure Pneumatic reversal valve of commutation pressure.External commutation pressure has been arranged is minute-pressure Pneumatic reversal valve about 8mbar, but price is high and do not possess the function of setting commutation pressure as required arbitrarily.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide an a kind of valve multi-functional Pneumatic reversal valve, both can realize that pilot pressure was the gas circuit commutation of minute-pressure, can realize that also pilot pressure is the gas circuit commutation of minute-pressure difference, the commutation pressure of valve is the minute-pressure Pneumatic reversal valve of the commutation adjustable in pressure that can set arbitrarily as required simultaneously.
The technological scheme that provides according to the utility model, the minute-pressure Pneumatic reversal valve of described commutation adjustable in pressure, it is included in upper cavity and the lower chamber of offering in the valve body, transverse strands is provided with upper diaphragm in upper cavity, upper diaphragm is separated into upper diaphragm epicoele and upper diaphragm cavity of resorption with upper cavity, on valve body, offer the first control pore that is communicated with the upper diaphragm epicoele, on valve body, offer the second control pore that is communicated with the upper diaphragm cavity of resorption, on upper diaphragm, be fixed with baffle plate, on the valve body above the upper diaphragm, be bolted with valve commutation pressure and regulate bolt, regulate the bolt seat of honour at valve commutation pressure upper spring is arranged, the underpart and the baffle plate of described upper spring offset, on the valve body below the upper diaphragm, be fixed with the valve seat supporting base, in the valve seat supporting base, offer valve opening, upper-end surface at the valve seat supporting base is embedded with elastic seat, described elastic seat is enclosed within the outside of valve opening, transverse strands is provided with diaphragm down in lower chamber, following diaphragm is separated into down diaphragm epicoele and following diaphragm cavity of resorption with lower chamber, described upper diaphragm cavity of resorption is intermittently connected by valve opening with following diaphragm epicoele, on valve body, offer second exhaust port that is communicated with following diaphragm cavity of resorption, on the valve body below the following diaphragm, offer separate inlet opening, the delivery outlet and first relief opening, slipper seal is plugged with spool in the valve body below following diaphragm, the tip portion of spool is fixed on down on the diaphragm, in the inlet opening, the spool outer wall of the delivery outlet and the first relief opening inner end position offers the spool groove, on the valve body below the spool, be bolted with valve element position and regulate bolt, the upper end portion seat of regulating bolt at valve element position has lower spring, and the tip portion of described lower spring and the bottom of spool offset.
The height of described spool groove is greater than the distance between the delivery outlet and the first relief opening inner end, and the height of spool groove is less than the perpendicular distance between the inlet opening and the first relief opening inner end.
Described spool groove is the circular groove that circumferentially is provided with along the spool outer wall.
The underpart of regulating bolt at valve commutation pressure offers the upper spring cavity, and the upper end portion of described upper spring embeds in this upper spring cavity.
Be provided with the support valve seat insert in valve seat supporting base bottom.
Described inlet opening, delivery outlet and first relief opening all are lateral arrangement, and inlet opening, delivery outlet and first relief opening are set in parallel, and the inlet opening is arranged on the left side of spool, and the delivery outlet and first relief opening are arranged on the right side of spool.
Offer the mounting screw hole in the bottom of valve body.
The utility model realizes that a valve is multi-functional, promptly has commutation adjustable in pressure, minute-pressure commutation and three kinds of functions of minute-pressure difference commutation; Of the present utility model highly sensitive, compact structure.
Description of drawings
Fig. 1 is the structural representation that the utility model does not feed the control air.
Fig. 2 is the structural representation that the utility model has fed the control air.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure: the minute-pressure Pneumatic reversal valve of this commutation adjustable in pressure, it is included in upper cavity and the lower chamber of offering in the valve body 1, transverse strands is provided with upper diaphragm 3 in upper cavity, upper diaphragm 3 is separated into upper diaphragm epicoele and upper diaphragm cavity of resorption with upper cavity, on valve body 1, offer the first control pore 2 that is communicated with the upper diaphragm epicoele, on valve body 1, offer the second control pore 4 that is communicated with the upper diaphragm cavity of resorption, on upper diaphragm 3, be fixed with baffle plate 19, on the valve body above the upper diaphragm 31, be bolted with valve commutation pressure and regulate bolt 18, regulate bolt 18 seats of honour at valve commutation pressure upper spring 17 is arranged, the underpart of described upper spring 17 and baffle plate 19 offset, on the valve body below the upper diaphragm 31, be fixed with valve seat supporting base 15, in valve seat supporting base 15, offer valve opening 22, be embedded with elastic seat 16 in the upper-end surface of valve seat supporting base 15, described elastic seat 16 is enclosed within the outside of valve opening 22, transverse strands is provided with diaphragm 5 down in lower chamber, following diaphragm 5 is separated into down diaphragm epicoele and following diaphragm cavity of resorption with lower chamber, described upper diaphragm cavity of resorption is intermittently connected by valve opening 22 with following diaphragm epicoele, on valve body 1, offer second exhaust port 13 that is communicated with following diaphragm cavity of resorption, on the valve body 1 below the following diaphragm 5, offer separate inlet opening 7, the delivery outlet 11 and first relief opening 12, slipper seal is plugged with spool 6 in the valve body 1 below following diaphragm 5, the tip portion of spool 6 is fixed on down on the diaphragm 5, in the inlet opening 7, spool 6 outer walls of delivery outlet 11 and first relief opening, 12 inner end positions offer spool groove 20, on the valve body below the spool 61, be bolted with valve element position and regulate bolt 9, the upper end portion seat of regulating bolt 9 at valve element position has lower spring 10, and the bottom of the tip portion of described lower spring 10 and spool 6 offsets.
The height of described spool groove 20 is greater than the distance between delivery outlet 11 and first relief opening, 12 inner ends, and the height of spool groove 20 is less than the perpendicular distance between inlet opening 7 and first relief opening, 12 inner ends.
Described spool groove 20 is the circular groove that circumferentially is provided with along spool 6 outer walls.
The underpart of regulating bolt 18 at valve commutation pressure offers upper spring cavity 21, and the upper end portion of described upper spring 17 embeds in this upper spring cavity 21.
Be provided with support valve seat insert 14 in valve seat supporting base 15 bottoms.
Described inlet opening 7, delivery outlet 11 and first relief opening 12 all are lateral arrangement, and inlet opening 7, delivery outlet 11 and first relief opening 12 are set in parallel, and inlet opening 7 is arranged on the left side of spool 6, and the delivery outlet 11 and first relief opening 12 are arranged on the right side of spool 6.
Offer mounting screw hole 8 in the bottom of valve body 1.
There is valve commutation pressure to regulate bolt 18 on the end face of valve body 1, the first control pore 2, second control pore 4 and the compressed-air actuated inlet opening 7 that the band screw is arranged on the left surface, the compressed-air actuated delivery outlet 11 and first exhaust port 12, second exhaust port 13 are arranged on the right flank, have the tapped blind hole of installation and valve element position to regulate bolt 9 on the lower surface.
Commutation pressure is regulated upper spring 17 between bolt 18 and upper diaphragm 3 upper surfaces, valve seat 16, valve seat supporting base 15 are installed between upper diaphragm 3 lower surfaces and the valve body successively and support valve seat insert 14, following diaphragm 5 lower surfaces link to each other with spool 6, and spool 6 lower end surfaces and valve element position are regulated between the bolt 9 lower spring 10 is housed.
The commutation pressure of valve is to regulate bolt 18 by screwing in or screw out commutation pressure, the decrement of Regulation spring 17 is that the size of spring force realizes, when 3 times cavity pressures of upper diaphragm during greater than the spring force sum of upper cavity pressure, upper diaphragm 3 tension force and upper spring 17, upper diaphragm 3 leaves elastic seat 16, cavity of resorption control air enters down diaphragm 5 epicoeles, and the gas pressure of upper diaphragm 3 cavity of resorptions promptly is the commutation pressure of selector valve so at this moment.
When the commutation of valve is controlled by one tunnel control air, the second control pore, 4 logical control air, the first control pore 2 leads to atmosphere; When the needs differential pressure commutates, the second control pore, 4 logical high voltage control air, the first control pore, 2 logical low voltage control air.
During work, after the second control pore 4 and the first control pore 2 places control air cut off, spool 6 moves under the effect of spring 10, it is barometric pressure to keep down cavity pressure that air enters down diaphragm 5 cavity of resorptions by second exhaust port 13, the part air of upper diaphragm 5 epicoeles enters upper diaphragm 3 cavity of resorptions, when diaphragm 5 upper cavity pressures are reduced to a certain degree instantly, upper diaphragm 3 is being pressed under the effect of upper spring 17 on the elastic seat 16, spool 6 is finished under the effect of lower spring 10 and is resetted, inlet opening 7 sealings, delivery outlet 11 communicates with exhaust port 12, enters atmosphere with residual air in the gas circuit that delivery outlet 11 links to each other, as shown in Figure 1.
When the second control pore 4 feeds the control air, when the first control pore, 2 logical atmosphere commutate, perhaps the second control pore 4 and the first control pore 2 all feed the control air and carry out differential pressure when commutating, upper diaphragm 3 disengagings contact with elastic seat 16, the control air enters down the epicoele of diaphragm 5, promoting spool 6 moves down, following diaphragm 5 cavity of resorption part air enter atmosphere by second exhaust port 13, to keep down cavity pressure is barometric pressure, along with spool 6 moves down, 12 sealings of first exhaust port, inlet opening 7 communicates with delivery outlet 11, and pressurized air enters in the gas circuit that links to each other with delivery outlet 11, thereby realize the commutation of valve, as shown in Figure 2.
Claims (7)
1. the minute-pressure Pneumatic reversal valve of the adjustable in pressure that commutates, it is characterized in that: it is included in upper cavity and the lower chamber of offering in the valve body (1), transverse strands is provided with upper diaphragm (3) in upper cavity, upper diaphragm (3) is separated into upper diaphragm epicoele and upper diaphragm cavity of resorption with upper cavity, on valve body (1), offer the first control pore (2) that is communicated with the upper diaphragm epicoele, on valve body (1), offer the second control pore (4) that is communicated with the upper diaphragm cavity of resorption, on upper diaphragm (3), be fixed with baffle plate (19), on the valve body (1) of upper diaphragm (3) top, be bolted with valve commutation pressure and regulate bolt (18), regulate bolt (18) seat of honour at valve commutation pressure upper spring (17) is arranged, the underpart of described upper spring (17) and baffle plate (19) offset, on the valve body (1) of upper diaphragm (3) below, be fixed with valve seat supporting base (15), in valve seat supporting base (15), offer valve opening (22), be embedded with elastic seat (16) in the upper-end surface of valve seat supporting base (15), described elastic seat (16) is enclosed within the outside of valve opening (22), transverse strands is provided with diaphragm (5) down in lower chamber, following diaphragm (5) is separated into down diaphragm epicoele and following diaphragm cavity of resorption with lower chamber, described upper diaphragm cavity of resorption is intermittently connected by valve opening (22) with following diaphragm epicoele, on valve body (1), offer second exhaust port (13) that is communicated with following diaphragm cavity of resorption, on the valve body (1) of following diaphragm (5) below, offer separate inlet opening (7), delivery outlet (11) and first relief opening (12), slipper seal is plugged with spool (6) in the valve body (1) of following diaphragm (5) below, the tip portion of spool (6) is fixed on down on the diaphragm (5), in the inlet opening (7), delivery outlet (11) offers spool groove (20) with spool (6) outer wall of first relief opening (12) inner end position, on the valve body (1) of spool (6) below, be bolted with valve element position and regulate bolt (9), the upper end portion seat of regulating bolt (9) at valve element position has lower spring (10), and the bottom of the tip portion of described lower spring (10) and spool (6) offsets.
2. the minute-pressure Pneumatic reversal valve of commutation adjustable in pressure as claimed in claim 1, it is characterized in that: the height of described spool groove (20) is greater than the distance between delivery outlet (11) and first relief opening (12) inner end, and the height of spool groove (20) is less than the perpendicular distance between inlet opening (7) and first relief opening (12) inner end.
3. the minute-pressure Pneumatic reversal valve of commutation adjustable in pressure as claimed in claim 1 or 2 is characterized in that: the circular groove of described spool groove (20) for circumferentially being provided with along spool (6) outer wall.
4. the minute-pressure Pneumatic reversal valve of commutation adjustable in pressure as claimed in claim 1, it is characterized in that: the underpart of regulating bolt (18) at valve commutation pressure offers upper spring cavity (21), and the upper end portion of described upper spring (17) embeds in this upper spring cavity (21).
5. the minute-pressure Pneumatic reversal valve of commutation adjustable in pressure as claimed in claim 1 is characterized in that: be provided with in valve seat supporting base (15) bottom and support valve seat insert (14).
6. the minute-pressure Pneumatic reversal valve of commutation adjustable in pressure as claimed in claim 1, it is characterized in that: described inlet opening (7), delivery outlet (11) all are lateral arrangement with first relief opening (12), and inlet opening (7), delivery outlet (11) and first relief opening (12) are set in parallel.
7. the minute-pressure Pneumatic reversal valve of commutation adjustable in pressure as claimed in claim 1 is characterized in that: offer mounting screw hole (8) in the bottom of valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201954457U CN201672091U (en) | 2010-05-19 | 2010-05-19 | Micro-pressure pneumatic reversal valve with adjustable reversing pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201954457U CN201672091U (en) | 2010-05-19 | 2010-05-19 | Micro-pressure pneumatic reversal valve with adjustable reversing pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201672091U true CN201672091U (en) | 2010-12-15 |
Family
ID=43329503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201954457U Expired - Lifetime CN201672091U (en) | 2010-05-19 | 2010-05-19 | Micro-pressure pneumatic reversal valve with adjustable reversing pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201672091U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322456A (en) * | 2011-08-30 | 2012-01-18 | 无锡气动技术研究所有限公司 | Micro-pressure pneumatic control reverse valve with adjustable control pressure |
| CN102943897A (en) * | 2012-10-18 | 2013-02-27 | 华中科技大学 | Pneumatic diaphragm type automatic pressure-difference reversing valve |
| CN105333185A (en) * | 2014-08-11 | 2016-02-17 | 王金青 | Micro-pressure adjustor of thermal treatment furnace |
-
2010
- 2010-05-19 CN CN2010201954457U patent/CN201672091U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322456A (en) * | 2011-08-30 | 2012-01-18 | 无锡气动技术研究所有限公司 | Micro-pressure pneumatic control reverse valve with adjustable control pressure |
| CN102322456B (en) * | 2011-08-30 | 2013-08-07 | 无锡气动技术研究所有限公司 | Micro-pressure pneumatic control reverse valve with adjustable control pressure |
| CN102943897A (en) * | 2012-10-18 | 2013-02-27 | 华中科技大学 | Pneumatic diaphragm type automatic pressure-difference reversing valve |
| CN102943897B (en) * | 2012-10-18 | 2014-05-07 | 华中科技大学 | Pneumatic diaphragm type automatic pressure-difference reversing valve |
| CN105333185A (en) * | 2014-08-11 | 2016-02-17 | 王金青 | Micro-pressure adjustor of thermal treatment furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |