CN210240742U - Improved pilot operated gas injection valve - Google Patents
Improved pilot operated gas injection valve Download PDFInfo
- Publication number
- CN210240742U CN210240742U CN201921185218.3U CN201921185218U CN210240742U CN 210240742 U CN210240742 U CN 210240742U CN 201921185218 U CN201921185218 U CN 201921185218U CN 210240742 U CN210240742 U CN 210240742U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- pressure chamber
- gas injection
- partition wall
- 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.)
- Active
Links
- 238000002347 injection Methods 0.000 title claims abstract description 28
- 239000007924 injection Substances 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 69
- 238000005192 partition Methods 0.000 claims abstract description 25
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000004146 energy storage Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Landscapes
- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a modified guide's formula gas injection valve, include: the valve comprises a valve body and a valve core, wherein the valve core is arranged in the valve body, a partition wall is arranged in the valve body, a piston is arranged at the tail part of the valve core, the piston is in sliding fit with a through hole of the partition wall and is provided with a shaft sealing device, the shaft sealing device comprises a flood plug sealing ring and a pressing ring, the flood plug sealing ring is arranged in an installation groove of the partition wall, a sealing ring body of the flood plug sealing ring is provided with an annular groove, and a U-shaped spring is arranged in the annular groove; the compression ring is sleeved on the piston and is detachably and fixedly installed on the partition wall, the compression ring is provided with an annular convex ring, and the annular convex ring stretches into the annular groove of the U-shaped spring and compresses the flooding plug sealing ring. The utility model discloses a shaft seal device has eliminated the upset degree of freedom of general stopper sealing washer, has solved the case motion card problem that the sealing washer upset caused.
Description
Technical Field
The utility model relates to a gas injection valve technical field especially relates to a large-traffic gas injection valve of bivalve.
Background
Chinese invention patent CN108644452A discloses an integral pilot-operated gas injection valve, which realizes the movement of a valve core by controlling the resultant force of gas pressure acting on the valve core 200. In the invention, as shown in fig. 1, a front valve body 101 and a rear valve body 102 are fixedly connected together to form a valve body, a partition wall 103 is arranged on the rear valve body 102, and the front valve body 101 is provided with an air inlet 104 and an air outlet 105. A shaft sealing device is arranged between the piston 204 at the tail part of the valve core and a partition wall through hole on the partition wall 103, and the shaft sealing device is a sealing ring. The sealing ring can be a Y-shaped rubber sealing ring, an O-shaped rubber sealing ring or other rubber sealing rings, or other devices capable of sealing a movable shaft, wherein the flooding plug sealing ring 300 (also called an energy storage sealing ring or a U-shaped sealing ring) becomes a preferable sealing element of the product of the patent due to the characteristics of small friction coefficient, wear resistance, strong corrosion resistance, wide high and low temperature resistance range, long service life and the like.
In practical application, it is found that irregular stuck phenomenon often occurs during the high-speed and high-frequency reciprocating motion of the valve core 200, and the reason for the irregular stuck phenomenon is that because the flooding seal ring 300 has a certain degree of freedom of movement in the installation groove of the partition wall 103, the flooding seal ring 300 is driven to turn over during the high-speed and high-frequency motion of the valve core 200, so that the stuck of the valve core 200 (as shown in fig. 2) is caused, and the motion rule of the valve core becomes uncontrollable.
SUMMERY OF THE UTILITY MODEL
The aforesaid to prior art is not enough, the utility model provides a modified guide's formula gas injection valve to solve the case motion card pause problem that the upset of general stopper sealing washer caused.
In order to solve the above technical problem, the utility model discloses a modified guide's formula gas injection valve, include: the valve body is provided with an air inlet and an air outlet; the valve element is arranged in the valve body and provided with a small valve plate and a large valve plate, the small valve plate is provided with a small valve plate sealing surface matched and sealed with the corresponding surface of the valve body, and the large valve plate is provided with a large valve plate sealing surface matched and sealed with the corresponding surface of the valve body; a partition wall is arranged in the valve body, a first through hole is formed in the partition wall, a piston is arranged at the tail part of the valve core and is in sliding fit with the first through hole, and a shaft sealing device is arranged between the piston and the first through hole; the shaft sealing device comprises a flood plug sealing ring, the flood plug sealing ring is arranged in the mounting groove of the partition wall, the flood plug sealing ring comprises a sealing ring body, the sealing ring body is provided with an annular groove, and a U-shaped spring is arranged in the annular groove; the compression ring, the compression ring cover is located the piston and can dismantle fixed mounting in the partition wall, the compression ring is provided with the protruding circle of annular, the protruding circle of annular stretches into in the ring channel of U-shaped spring and compress tightly general stopper sealing washer.
The partition wall divides the inner cavity of the valve body into a high-pressure cavity located on the front side and a high-low pressure conversion cavity located on the rear side, the valve core part between the small valve plate sealing surface and the large valve plate sealing surface divides the high-pressure cavity into a first high-pressure cavity and a second high-pressure cavity, the first high-pressure cavity is communicated with the air inlet, the first high-pressure cavity is communicated with the second high-pressure cavity through a second through hole formed in the valve core, the valve core part between the small valve plate sealing surface and the large valve plate sealing surface is communicated with the corresponding inner surface of the valve body to form a low-pressure cavity, and the low-pressure cavity is communicated with the air outlet.
The pilot-operated gas injection valve comprises an electromagnetic valve, the electromagnetic valve is provided with a working fluid interface which is respectively communicated with the high-pressure cavity, the low-pressure cavity and the high-low pressure conversion cavity, the gas injection valve is closed when the high-pressure cavity is communicated with the high-low pressure conversion cavity, and the gas injection valve is opened when the low-pressure cavity is communicated with the high-low pressure conversion cavity.
Wherein the solenoid valve is a two-position three-way solenoid valve.
And a return spring is arranged in the high-low pressure conversion cavity and abuts against the position between the piston and the valve body.
The valve body comprises a front valve body and a rear valve body which are fixedly connected together, and the partition wall is arranged on the rear valve body.
After the technical scheme is adopted, the utility model discloses an efficiency is, because the protruding circle of annular of clamping ring stretches into in the ring channel of the U-shaped spring of general stopper sealing washer and compress tightly general stopper sealing washer to eliminate the upset degree of freedom of general stopper sealing washer, solved the case motion card pause problem that the sealing washer upset caused.
Compared with the known technology of driving the valve core by electromagnetic force, the pilot-operated gas injection valve disclosed by the utility model has two advantages:
1. compare with the electromagnetic force of electromagnetically driven valve element, the utility model discloses the resultant force that acts on the atmospheric pressure of case can be designed bigger, realizes the high-speed motion of case especially big quality case easily.
2. The gas injection valve of solenoid actuated valve core motion, along with the grow of stroke (air gap), the electromagnetic force can attenuate rapidly, consequently, the stroke of valve receives the restriction, and the utility model discloses a gas injection valve adopts pneumatic pressure to drive the valve core motion, and along with the increase of case stroke, pneumatic pressure can hardly attenuate to the resultant force of case, consequently, can improve opening the stroke of case greatly in the design to improve gas injection valve's flow, specially adapted is large-scale or super large-scale gas injection valve.
Drawings
FIG. 1 is a sectional view showing a structure of a known pilot type gas injection valve;
FIG. 2 is an enlarged view taken at I in FIG. 1;
FIG. 3 is a cross-sectional view of an embodiment of the pilot operated gas injection valve of the present invention;
FIG. 4 is an enlarged view taken at II in FIG. 3;
in the figure, 101-a front valve body, 102-a rear valve body, 103-a partition wall, 104-an air inlet, 105-an air outlet, 200-a valve core, 201-a small valve sheet, 202-a large valve sheet, 203-a second through hole, 204-a piston, 300-a flood plug sealing ring, 301-a sealing ring body, 302-a U-shaped spring, 400-a return spring, 500-an electromagnetic valve, 600 a-a pressing ring, 600 b-a pressing ring and 601 b-an annular convex ring;
a1-first high pressure chamber, A2-second high pressure chamber, B-high low pressure switching chamber, C-low pressure chamber.
Detailed Description
The present invention will be further explained with reference to the drawings and examples. For convenience of description, the valve tail end of the valve core is defined as a "rear" end, and the opposite end thereof is defined as a "front" end.
As shown in fig. 3 and 4, a pilot-operated gas injection valve is in a closed state. The front valve body 101 and the rear valve body 102 are fixedly connected together to form a valve body, the partition wall 103 is arranged on the rear valve body 102, and the front valve body 101 is provided with an air inlet 104 and an air outlet 105.
The valve cartridge 200 is installed in the valve body. The valve core 200 is provided with a small valve plate 201 and a large valve plate 202, the small valve plate 201 is provided with a small valve plate sealing surface matched and sealed with the corresponding surface of the valve body, and the large valve plate 202 is provided with a large valve plate sealing surface matched and sealed with the corresponding surface of the valve body.
The partition wall 103 is provided with a first through hole, the tail part of the valve core is provided with a piston 204, the piston 204 is in sliding fit with the first through hole, and a shaft sealing device is arranged between the piston 204 and the first through hole, so that the cavities on the two sides of the partition wall 103 are isolated in a gas-tight manner. Specifically, the shaft sealing device is a flood plug sealing ring 300 (also called an energy storage sealing ring or a U-shaped sealing ring), the flood plug sealing ring 300 includes a sealing ring body 301, the sealing ring body 301 is provided with an annular groove, and the annular groove is internally provided with a U-shaped spring 302. The piston 204 is sleeved with the pressing ring 600b and is detachably and fixedly mounted on the partition wall 103, the pressing ring 600b is provided with an annular convex ring 601b, and the annular convex ring 601b extends into an annular groove of the U-shaped spring 302 and compresses the flood plug sealing ring 300.
The partition wall 103 divides the inner cavity of the valve body into a high-pressure cavity located on the front side and a high-low pressure conversion cavity B located on the rear side, the valve core part between the small valve plate sealing surface and the large valve plate sealing surface divides the high-pressure cavity into a first high-pressure cavity A1 and a second high-pressure cavity A2, the first high-pressure cavity A1 is communicated with the air inlet 104, the first high-pressure cavity A1 and the second high-pressure cavity A2 are communicated through a second through hole 203 formed in the valve core 200, a low-pressure cavity C is formed between the valve core part between the small valve plate sealing surface and the large valve plate sealing surface and the corresponding inner surface of the valve body, and the low-pressure cavity C is communicated with the air outlet 105.
The solenoid valve 500 is used to communicate the high-pressure and low-pressure switching chamber B with the high-pressure chamber or with the low-pressure chamber C, and to control resultant force of air pressure acting on the valve element 200, thereby achieving movement of the valve element.
One working fluid port of the solenoid valve 500 is communicated with the high pressure chamber, one working fluid port is communicated with the low pressure chamber C, and one working fluid port is communicated with the high and low pressure switching chamber B, when the solenoid valve 500 is powered on, the high and low pressure switching chamber B is communicated with the low pressure chamber C, so that the gas injection valve is opened, and when the solenoid valve 500 is powered off, the high and low pressure switching chamber B is communicated with the high pressure chamber, so that the gas injection valve is closed. The structure of the solenoid valve that realizes the gas circuit and switch is not limited to two-position tee bend, and all solenoid valves that can realize above-mentioned function will all fall into the utility model discloses an within the scope of protection.
The utility model discloses in, in order to strengthen the sealed effect of big or small valve block, set up return spring 400 in high-low pressure conversion chamber B, return spring 400 pushes up and leans on between case afterbody 204 and back valve body 102.
The present invention is not limited to the above embodiments, and all improvements based on the concept, principle, structure and method of the present invention will fall within the protection scope of the present invention.
Claims (6)
1. An improved piloted gas injection valve comprising:
the valve body is provided with an air inlet and an air outlet;
the valve element is arranged in the valve body and provided with a small valve plate and a large valve plate, the small valve plate is provided with a small valve plate sealing surface matched and sealed with the corresponding surface of the valve body, and the large valve plate is provided with a large valve plate sealing surface matched and sealed with the corresponding surface of the valve body;
a partition wall is arranged in the valve body, a first through hole is formed in the partition wall, a piston is arranged at the tail part of the valve core and is in sliding fit with the first through hole, and a shaft sealing device is arranged between the piston and the first through hole; characterized in that the shaft sealing device comprises
The flooding plug sealing ring is arranged in the mounting groove of the partition wall and comprises a sealing ring body, the sealing ring body is provided with an annular groove, and a U-shaped spring is arranged in the annular groove;
the compression ring, the compression ring cover is located the piston and can dismantle fixed mounting in the partition wall, the compression ring is provided with the protruding circle of annular, the protruding circle of annular stretches into in the ring channel of U-shaped spring and compress tightly general stopper sealing washer.
2. The improved pilot-operated gas injection valve according to claim 1, wherein the partition wall divides the inner chamber of the valve body into a high-pressure chamber on a front side and a high-low pressure switching chamber on a rear side, a spool portion between the small valve sheet sealing surface and the large valve sheet sealing surface divides the high-pressure chamber into a first high-pressure chamber and a second high-pressure chamber, the first high-pressure chamber communicates with the gas inlet, the first high-pressure chamber communicates with the second high-pressure chamber through a second through hole provided in the spool, a low-pressure chamber is formed between the spool portion between the small valve sheet sealing surface and the large valve sheet sealing surface and the corresponding inner surface of the valve body, and the low-pressure chamber communicates with the gas outlet.
3. The improved piloted gas injection valve as in claim 2 further comprising a solenoid valve having working fluid ports communicating with said high pressure chamber, said low pressure chamber and said high to low pressure shift chamber respectively, said gas injection valve being closed when said high pressure chamber is in communication with said high to low pressure shift chamber and open when said low pressure chamber is in communication with said high to low pressure shift chamber.
4. The improved piloted gas injection valve as in claim 3 wherein said solenoid valve is a two-position three-way solenoid valve.
5. The improved piloted gas injection valve as in claim 2 wherein a return spring is disposed in said high and low pressure transition chamber, said return spring bearing between said piston and said valve body.
6. The improved piloted gas injection valve as in claim 1 wherein said valve body comprises a front valve body and a rear valve body fixedly attached together, said diaphragm being disposed in said rear valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921185218.3U CN210240742U (en) | 2019-07-25 | 2019-07-25 | Improved pilot operated gas injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921185218.3U CN210240742U (en) | 2019-07-25 | 2019-07-25 | Improved pilot operated gas injection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210240742U true CN210240742U (en) | 2020-04-03 |
Family
ID=69992861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921185218.3U Active CN210240742U (en) | 2019-07-25 | 2019-07-25 | Improved pilot operated gas injection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210240742U (en) |
-
2019
- 2019-07-25 CN CN201921185218.3U patent/CN210240742U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111442099A (en) | Heavy-calibre guide's formula high pressure normally open solenoid valve | |
| CN210240742U (en) | Improved pilot operated gas injection valve | |
| CN216812906U (en) | Low-voltage electromagnetic valve | |
| CN202326486U (en) | Leakage-free type pneumatic control hydraulic reversing valve | |
| CN2883816Y (en) | Slit ring sealed smart hydraulic control valve | |
| CN212225645U (en) | Pneumatic control type oil pressure valve | |
| CN101368641B (en) | Unloading type liquid-control hydraulic break valve and its opening method | |
| CN213064111U (en) | Novel plug-in type hydraulic control one-way valve with opening being sealed in hard matching manner | |
| CN209959977U (en) | Angle valve | |
| CN211900941U (en) | Stepless air volume adjusting air valve operation structure and hydraulic damping device thereof | |
| CN211082429U (en) | Two-position three-way reversing valve with self-locking gas circuit | |
| CN208503613U (en) | Leading gas injection valve | |
| KR20010067769A (en) | Valve structure for the plunger pump | |
| CN108005984B (en) | A kind of guide type electromagnetic ball valve | |
| CN202469017U (en) | Air-operated valve | |
| CN212718101U (en) | High-frequency quick-opening valve | |
| CN216812907U (en) | Side-in bottom-out switch valve core | |
| CN221120918U (en) | Electromagnetic valve | |
| CN218954068U (en) | Fluid control valve | |
| CN211315291U (en) | Energy-saving noise-reducing air return valve | |
| CN214464795U (en) | Compressor clearance cylinder | |
| CN220706435U (en) | Direct-acting electromagnetic valve | |
| CN221196169U (en) | Four-way valve | |
| CN112792788B (en) | Pneumatic nailing gun | |
| CN212272338U (en) | Variable displacement oil pump slide block control mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |