CN201810859U - Air-operated pilot valve - Google Patents
Air-operated pilot valve Download PDFInfo
- Publication number
- CN201810859U CN201810859U CN2010205733561U CN201020573356U CN201810859U CN 201810859 U CN201810859 U CN 201810859U CN 2010205733561 U CN2010205733561 U CN 2010205733561U CN 201020573356 U CN201020573356 U CN 201020573356U CN 201810859 U CN201810859 U CN 201810859U
- Authority
- CN
- China
- Prior art keywords
- top cutter
- valve
- valve body
- pilot valve
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses an air-operated pilot valve. The air-operated pilot valve comprises a valve body (1), a connector (5), a valve core (4), a top cutter (9) and a spring (10), wherein the two sides of the valve body (1) are provided with air inlets; the connector (5) is detachably connected to the lower end of the valve body (1); the valve core (4) is in sliding fit with the inner cavity of the valve body (1), and an air inlet cavity (11) is formed between the upper end of the valve core (4) and the valve body (1); the top cutter (9) is arranged at the lower end of the valve core (4); the spring (10) is sleeved on the top cutter (9); the lower half part of the top cutter (9) is sleeved in a through hole (8) of the connector (5) in a sliding mode; the lower end of the top cutter (9) is provided with an oblique conical surface (9.1); and an arc annular groove (9.2) is formed on the outer circumferential surface of the lower part of the top cutter (9) along the circumferential direction. The air-operated pilot valve is difficult to block when air is exhausted, and ensures that the matched differential pressure gas cylinder valve is more smoothly opened.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of gas control pilot valve.
Background technique
At present, be typically provided with gas control pilot valve matching used on the differential pressure type cylinder valve with it, this gas control pilot valve comprise both sides be provided with the valve body of suction port, by the removable connecting head that is connected in valve body lower end of gland nut, be snug fit at the spool that forms air-inlet cavity between body cavity and upper end and the valve body, be located at the top cutter of spool lower end and be linked in spring on the cutter of top, the outer peripheral surface of spool is provided with seal ring; One end of spring is butted on the lower end of described spool, and the other end of spring and described connecting head offset, and the outer peripheral surface of connecting head is provided with a plurality of exhaust ports, and the Lower Half of top cutter is slided and is sleeved in the through hole of described connecting head.Manually-operable for convenience also is provided with push rod on this pilot valve, the lower end of push rod is fixed on the spool, and push rod is snug fit in the through hole of valve body upper end, is provided with seal ring between push rod and the valve body, and the upper end of push rod is fixedly connected is useful on manually operated jacking block.After opening the control source of the gas of gas control pilot valve, because the air-inlet cavity internal air pressure of the valve body of gas control pilot valve raises, the promotion spool moves downward, thereby the top cutter that drives the spool lower end moves downward, and by the diaphragm of releasing on the broken supporting differential cylinder valve of top lancination, this differential pressure type cylinder valve intracavity gas is discharged, thereby open this differential cylinder valve.
The gas control pilot valve of prior art uses hollow top cutter or helical type top cutter usually.Be provided with slotted hole in point of a knife one side of hollow top cutter and on the cutter hub excircle uniform several apertures communicate with this slotted hole, behind the diaphragm on the broken supporting cylinder valve of hollow top lancination, pressurized gas is discharged by slotted hole and aperture that hollow top cutter is provided with successively in the cylinder valve.But when the gas control pilot valve uses should hollow top during lancination rupture of membranes sheet, puncture the diaphragm that gets off and fall into hollow top cutter endoporus easily and result in blockage, thereby hindered gas discharge in the gas cylinder, supporting differential cylinder valve can't be opened smoothly, cause potential safety hazard.Helical type top cutter upwards be provided with many spiral yarn shaped air vents cutter hub week, behind the diaphragm on the broken supporting cylinder valve of helical type top lancination, the gas cylinder compressed air is discharged by the spiral yarn shaped air vent on the cutter of helical type top.But when the gas control pilot valve uses this helical type top lancination rupture of membranes sheet, puncture the diaphragm that gets off and be wrapped in easily in the spiral yarn shaped air vent, stop up air vent, supporting differential cylinder valve can't be opened smoothly, cause damage.
Summary of the invention
Technical problem to be solved in the utility model is: be difficult for stopping up, making supporting differential cylinder valve to open gas control pilot valve more smoothly when a kind of exhaust is provided.
The technical scheme in the invention for solving the above technical problem is: a kind of gas control pilot valve, comprise that both sides are provided with the valve body of suction port, the removable connecting head that is connected in valve body lower end, are snug fit at the spool that forms air-inlet cavity between body cavity and upper end and the valve body, are located at the top cutter of spool lower end and are linked in spring on the cutter of top, the Lower Half of described top cutter is slided and is sleeved in the through hole of described connecting head; The lower end of described top cutter is provided with the oblique conical surface, and the outer peripheral surface upper edge of the bottom of described top cutter is circumferentially with the annular groove that is circular-arc.
Compared with prior art, advantage of the present utility model is: the cutter lower end, top of this gas control pilot valve is provided with the oblique conical surface, after diaphragm punctures like this, cuddles up in a heap and still is connected on the diaphragm along conical surface direction volume, can not stop up vent.In addition, the outer wall upper edge of the bottom of top cutter is circumferentially with the annular groove that is circular-arc, diaphragm is punctured after, between diaphragm and top cutter bigger space is arranged, the gas in the valve pocket of convenient supporting differential pressure type cylinder valve is discharged out-of-bounds, thereby opens cylinder valve smoothly.The use of this gas control pilot valve is safer, can effectively improve the pressure release Safety performance of the differential pressure type cylinder valve supporting with it.
As preferably, the angle α of the axis of the described conical surface and top cutter is 45 °.Like this, puncture diaphragm after, the better effects if of crispaturaing of diaphragm.
As preferably, the radius R of described annular groove is 5.5mm.Help the discharge of the gas in the valve pocket of cylinder valve like this, more.
Description of drawings
Fig. 1 is the structural representation of the utility model gas control pilot valve.
Fig. 2 is the structural representation of the top cutter of the utility model gas control pilot valve.
Among Fig. 1-2: 1, valve body, 2, push rod, 3, jacking block, 4, spool, 5, connecting head, 6, gland nut, 7, exhaust port, 8, through hole, 9, the top cutter, 9.1, the conical surface, 9.2, annular groove, 10, spring, 11, air-inlet cavity, 12, first seal ring, 13, suction port, 14, pipe box, 15, binding nut, 16, second seal ring.
The angle of the axis of α, the conical surface and top cutter.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
As shown in Figure 1, 2, a kind of gas control pilot valve, comprise both sides be provided with the valve body 1 of suction port, by the removable connecting head 5 that is connected in valve body 1 lower end of gland nut 6, be snug fit at the spool 4 that forms air-inlet cavity 11 between valve body 1 inner chamber and upper end and the valve body 1, be located at the top cutter 9 of spool 4 lower ends and be linked in spring 10 on the cutter of top, suction port 13 places of valve body 1 both sides are equipped with pipe box 14, and pipe box 14 is by the binding nut 15 removable both sides that are connected in valve body 1; Be embedded with first seal ring 12 on the outer peripheral surface of spool 4, an end of spring 10 is butted on the lower end of spool 4, and the other end of spring 10 and connecting head 5 offset, and the outer peripheral surface of connecting head 5 is provided with a plurality of exhaust ports 7; The Lower Half of top cutter 9 is slided and is sleeved in the through hole 8 of connecting head 5; The lower end of top cutter 9 is provided with the oblique conical surface 9.1, and the outer wall upper edge of the bottom of top cutter 9 is circumferentially with the annular groove 9.2 that is circular-arc.
Manually-operable for convenience, also be provided with push rod 2 on this gas control pilot valve, the lower end of push rod 2 is fixed on the spool 4, and push rod 2 is snug fit in the through hole of valve body 1 upper end, be provided with second seal ring 16 between push rod 2 and the valve body 1, and the upper end of push rod 2 is fixedly connected is useful on manually operated jacking block 3; The lower end of top cutter 9 is provided with the oblique conical surface 9.1, and the outer peripheral surface upper edge of the bottom of top cutter 9 is circumferentially with the annular groove 9.2 that is circular-arc.
The conical surface 9.1 is 30 °～75 ° with the angle α of the axis of top cutter 9.The radius R of annular groove 9.2 is 3mm～10mm.
In this specific embodiment, the conical surface 9.1 is 45 ° with the angle α of the axis of top cutter 9.The radius R of described annular groove 9.2 is 5.5mm.
After opening the control source of the gas of gas control pilot valve, because air-inlet cavity 11 internal air pressures of the valve body 1 of gas control pilot valve raise, promoting spool 4 moves downward, thereby the top cutter 9 that drives spool 4 lower ends moves downward, and puncture the diaphragm of releasing on the supporting differential cylinder valve by top cutter 9, this differential pressure type cylinder valve intracavity gas is discharged, thereby open this differential cylinder valve.During manually-operable, can be manually coping block 3 downwards, promotes spools 4 by push rod 2 and move downward, thereby the top cutter 9 that drives spool 4 lower ends moves downward, and puncture the diaphragm of releasing on the supporting differential cylinder valve by top cutter 9, can open this differential cylinder valve equally.
Below only be described, but can not be interpreted as it is restriction claim with regard to most preferred embodiment of the present utility model.The utility model not only is confined to above embodiment, and its concrete structure allows variation, as: the conical surface 9.1 can be 30 °～75 ° arbitrary value with the angle α of the axis of top cutter; The radius R of annular groove 9.2 can be the arbitrary value of 3mm～10mm.All various variations of being done in the protection domain of the utility model independent claims are all in the utility model protection domain.
Claims (5)
1. gas control pilot valve, comprise that both sides are provided with the valve body of suction port (1), the removable connecting head (5) that is connected in valve body (1) lower end, are snug fit at the spool (4) that forms air-inlet cavity (11) between valve body (1) inner chamber and upper end and the valve body (1), are located at the top cutter (9) of spool (4) lower end and are linked in spring (10) on the top cutter (9), the Lower Half of described top cutter (9) is slided and is sleeved in the through hole (8) of described connecting head (5); It is characterized in that: the lower end of described top cutter (9) is provided with the oblique conical surface (9.1), and the outer peripheral surface upper edge of the bottom of described top cutter (9) is circumferentially with the annular groove (9.2) that is circular-arc.
2. gas control pilot valve according to claim 1 is characterized in that: the described conical surface (9.1) is 30 °～75 ° with the angle (α) of the axis of described top cutter (9).
3. gas control pilot valve according to claim 2 is characterized in that: the described conical surface (9.1) is 45 ° with the angle (α) of the axis of described top cutter (9).
4. gas control pilot valve according to claim 1 is characterized in that: the radius R of described annular groove (9.2) is 3mm～10mm.
5. gas control pilot valve according to claim 4 is characterized in that: the radius R of described annular groove (9.2) is 5.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205733561U CN201810859U (en) | 2010-10-19 | 2010-10-19 | Air-operated pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205733561U CN201810859U (en) | 2010-10-19 | 2010-10-19 | Air-operated pilot valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810859U true CN201810859U (en) | 2011-04-27 |
Family
ID=43893800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205733561U Expired - Fee Related CN201810859U (en) | 2010-10-19 | 2010-10-19 | Air-operated pilot valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810859U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454013A (en) * | 2014-12-02 | 2015-03-25 | 重庆国另机械有限公司 | Automatic reversing mechanism for pneumatic motor |
| CN106075771A (en) * | 2016-07-20 | 2016-11-09 | 湖南鸿腾新能源技术有限公司 | Motor-type driving means and the battery case automatic fire extinguishing system comprising it |
-
2010
- 2010-10-19 CN CN2010205733561U patent/CN201810859U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454013A (en) * | 2014-12-02 | 2015-03-25 | 重庆国另机械有限公司 | Automatic reversing mechanism for pneumatic motor |
| CN106075771A (en) * | 2016-07-20 | 2016-11-09 | 湖南鸿腾新能源技术有限公司 | Motor-type driving means and the battery case automatic fire extinguishing system comprising it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20141019 |
|
| EXPY | Termination of patent right or utility model |