CN214093157U - High-precision gas proportional valve - Google Patents
High-precision gas proportional valve Download PDFInfo
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- CN214093157U CN214093157U CN202021915968.4U CN202021915968U CN214093157U CN 214093157 U CN214093157 U CN 214093157U CN 202021915968 U CN202021915968 U CN 202021915968U CN 214093157 U CN214093157 U CN 214093157U
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- cavity
- gas proportional
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Abstract
The utility model discloses a high accuracy gas proportional valve, include: the valve comprises a first valve body and a valve cover, wherein a first valve cavity is formed in the first valve body, the valve cover is installed at the upper end of the first valve body, an outlet communicated with the first valve cavity is formed in the valve cover, a valve rod is arranged in the first valve body, a valve plug is arranged on the valve rod, and the valve plug is matched with the outlet in a plugging manner; the driving assembly is arranged at the lower end of the first valve body and is used for driving the valve rod to move up and down; the second valve body is arranged on the side wall of the first valve body, a second valve cavity is formed in the second valve body, and the second valve cavity is communicated with the first valve cavity; and the two control stop valves are arranged on the second valve body and are respectively matched with the second valve body in a sealing way. The utility model discloses control accuracy is higher, and stability is better to improve the complete machine performance.
Description
Technical Field
The utility model relates to a technical field of gas proportional valve especially relates to a high accuracy gas proportional valve.
Background
At present, many devices in people's lives use fuel gas, so the fuel gas proportional valve used for controlling fuel gas flow is widely applied.
The gas proportional valve in the prior art controls the opening and closing degree of a valve port by controlling the current of an electromagnet, the current of the electromagnet is preset only by a designer of the gas proportional valve, the control mode which is manually preset is difficult to optimize the gas and air proportion, and control can be realized, but the control precision is not high, the stability is poor, so that the performance of the whole machine is influenced, and the user experience is poor.
Disclosure of Invention
Aiming at the problem that the existing gas proportional valve is low in control precision, the high-precision gas proportional valve is provided.
The specific technical scheme is as follows:
a high precision gas proportioning valve comprising: the valve comprises a first valve body and a valve cover, wherein a first valve cavity is formed in the first valve body, the valve cover is installed at the upper end of the first valve body, an outlet communicated with the first valve cavity is formed in the valve cover, a valve rod is arranged in the first valve body, a valve plug is arranged on the valve rod, and the valve plug is matched with the outlet in a plugging manner;
the driving assembly is arranged at the lower end of the first valve body and is used for driving the valve rod to move up and down;
the second valve body is arranged on the side wall of the first valve body, a second valve cavity is formed in the second valve body, and the second valve cavity is communicated with the first valve cavity;
and the two control stop valves are arranged on the second valve body and are respectively matched with the second valve body in a sealing way.
The high-precision gas proportional valve further comprises: the first air pipe is connected with the lower end of the second valve body, the first air pipe is communicated with the second valve cavity, and a filter screen is arranged at the inlet of the first air pipe.
In the high-precision gas proportional valve, one of the control stop valves is located right above the other control stop valve;
the second valve body is internally provided with a first valve channel and a second valve channel, the first valve channel and the second valve channel are arranged along the transverse direction of the second valve body, and the first valve channel is positioned above the second valve channel;
the second valve cavity comprises a first channel, a cavity, a second channel and a third channel which are sequentially communicated, the first channel is positioned in the first valve channel, the second channel is positioned in the second valve channel, the first channel is communicated with the first valve cavity, and the third channel is communicated with the first air pipe;
the control stop valve is matched with the first valve channel plug, and the other control stop valve is matched with the second valve channel plug.
The inner periphery of the upper end of the first valve cavity is provided with a conical convex ring, and the valve plug is matched with the conical convex ring in a sealing mode.
Foretell high accuracy gas proportional valve, wherein, the valve gap is located the inner wall of export is equipped with the flange, the flange sets up along vertical direction, the flange stretches into in the first valve body, the valve plug spacing in the toper bulge loop with between the flange.
Foretell high accuracy gas proportional valve, wherein, the upper surface slope of toper bulge loop sets up downwards, the lower extreme toper of flange sets up, the periphery slope of valve plug upwards sets up, the lower surface of the periphery of valve plug with the spacing cooperation of upper surface of toper bulge loop, the upper surface of the periphery of valve plug with the spacing cooperation in the outside of the lower extreme of flange.
The side wall of the valve cover is provided with an exhaust hole, a first screw is arranged in the exhaust hole, and the first screw is used for plugging the exhaust hole.
In the high-precision gas proportional valve, the driving assembly comprises a membrane, a mounting plate, a shell and a mounting seat which are sequentially arranged from top to bottom;
an air pressure cavity is formed between the membrane and the mounting plate;
be equipped with the electro-magnet in the casing, the lower extreme of valve rod passes in proper order the membrane with the mounting panel, and stretch into in the electro-magnet, the electro-magnet internalization is equipped with moves the iron core, move the upper end of iron core with the lower extreme of valve rod offsets, move the lower extreme of iron core and stretch into in the mount pad, and with be formed with the clearance between the mount pad.
In the high-precision gas proportional valve, the periphery of the lower end of the valve rod is sequentially provided with the first step and the second step from bottom to top;
supreme snap ring and the chuck of being equipped with in proper order are down followed to the periphery of the lower extreme of valve rod, the membrane presss from both sides and locates the second step with between the chuck, the snap ring with the spacing cooperation of first step, the snap ring with the chuck supports and is equipped with first spring.
In the high-precision gas proportional valve, the lower end of the mounting seat is provided with the second screw, and the second spring is arranged between the lower end of the movable iron core and the second screw in a supporting manner.
Compared with the prior art, the technical scheme has the positive effects that:
(1) the utility model is provided with the second valve body and the two control stop valves, the control precision is higher, the stability is better, thereby improving the performance of the whole machine;
(2) the utility model discloses a set up the flange in the valve gap, make the valve plug spacing between toper bulge loop and flange, the opening of the first valve pocket of control, control accuracy is higher, and stability is better to improve the complete machine performance.
Drawings
FIG. 1 is a sectional view of a high-precision gas proportional valve of the present invention;
fig. 2 is a sectional view of a second valve body of the high-precision gas proportional valve of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 1 of a high-precision gas proportional valve according to the present invention;
in the drawings: 1. a first valve body; 2. a second valve body; 3. a valve cover; 4. a first valve chamber; 5. a second valve cavity; 6. an outlet; 7. a valve stem; 8. a valve plug; 9. controlling a stop valve; 10. a drive assembly; 11. a first air pipe; 12. a filter screen; 13. a first valve passage; 14. a second valve passage; 15. a first channel; 16. a cavity; 17. a second channel; 18. a third channel; 19. a conical convex ring; 20. a flange; 21. a first screw; 22. a second screw; 23. a film; 24. mounting a plate; 25. a housing; 26. a mounting seat; 27. a pneumatic chamber; 28. an electromagnet; 29. a movable iron core; 30. assembling a plate; 31. a snap ring; 32. a chuck; 33. a first spring; 34. a second spring; 35. a through hole; 36. a first step; 37. a second step; 38. and (7) a gasket.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Fig. 1 is the utility model relates to a high accuracy gas proportional valve's cross-sectional view, fig. 2 is the utility model relates to a high accuracy gas proportional valve's the cross-sectional view of second valve body, fig. 3 is the utility model relates to a high accuracy gas proportional valve's the enlarger of A department in fig. 1, as shown in fig. 1 to 3, a high accuracy gas proportional valve of preferred embodiment is shown, include: first valve body 1 and valve gap 3 are formed with first valve chamber 4 in the first valve body 1, and valve gap 3 is installed in the upper end of first valve body 1, is equipped with the export 6 that is linked together with first valve chamber 4 on the valve gap 3, is equipped with valve rod 7 in the first valve body 1, is equipped with valve plug 8 on the valve rod 7, and valve plug 8 cooperates with 19 shutoff of toper bulge loop.
Preferably, the valve plug 8 moves up and down, the positions of the valve plug 8 and the conical convex ring 19 are changed, so that the change of the area of the air passage is realized, and the valve plug 8 is used for controlling the flow.
Further, as a preferred embodiment, the high-precision gas proportional valve further comprises: and the driving assembly 10 is arranged at the lower end of the first valve body 1, and the driving assembly 10 is used for driving the valve rod 7 to move up and down.
Further, as a preferred embodiment, the high-precision gas proportional valve further comprises: the second valve body 2 is arranged on the side wall of the first valve body 1, a second valve cavity 5 is formed in the second valve body 2, and the second valve cavity 5 is communicated with the first valve cavity 4.
Further, as a preferred embodiment, the high-precision gas proportional valve further comprises: two control stop valves 9, two control stop valves 9 are all installed on second valve body 2, and two control stop valves 9 respectively with the shutoff cooperation of second valve body 2.
Further, as a preferred embodiment, the high-precision gas proportional valve further comprises: the first air pipe 11, the lower extreme of first air pipe 11 and second valve body 2 is connected, and first air pipe 11 is linked together with second valve chamber 5, and the import department of first air pipe 11 is equipped with filter screen 12. Preferably, the filter screen 12 can improve the service life of the valve body.
Preferably, the first air pipe 11 and the second valve body 2 are of an integral structure.
Further, as a preferred embodiment, one control cut-off valve 9 is located directly above the other control cut-off valve 9.
Further, as a preferred embodiment, the second valve body 2 has a first valve passage 13 and a second valve passage 14 therein, the first valve passage 13 and the second valve passage 14 are both disposed in the transverse direction of the second valve body 2, and the first valve passage 13 is located above the second valve passage 14.
Further, as a preferred embodiment, the second valve chamber 5 includes a first passage 15, a chamber 16, a second passage 17 and a third passage 18 which are sequentially communicated, the first passage 15 is located in the first valve passage 13, the second passage 17 is located in the second valve passage 14, the first passage 15 is communicated with the first valve chamber 1, and the third passage 18 is communicated with the first air pipe 11.
Preferably, the first passage 15 and the second passage 16 are arranged in a transverse direction of the second valve body 2, and the third passage 18 is arranged in a longitudinal direction of the second valve body 2.
Preferably, the first valve body 1 and the second valve body 2 are of an integral structure.
Further, as a preferred embodiment, one control stop valve 9 is in sealing fit with the first valve passage 13, and the other control stop valve 9 is in sealing fit with the second valve passage 14.
Further, as a preferred embodiment, a conical convex ring 19 is formed on the inner periphery of the first valve body 1 at the upper end of the first valve chamber 4, and the valve plug 8 is in sealing fit with the conical convex ring 19.
Further, as a preferred embodiment, the inner wall of the valve cap 3 at the outlet 6 is provided with a flange 20, the flange 20 is disposed along the vertical direction, the flange 20 extends into the first valve body 1, and the valve plug 8 is limited between the conical convex ring 19 and the flange 20.
Further, as a preferred embodiment, the upper surface of the conical convex ring 19 is inclined downward, the lower end of the flange 20 is conical, the outer periphery of the valve plug 8 is inclined upward, the lower surface of the outer periphery of the valve plug 8 is in limit fit with the upper surface of the conical convex ring 19, and the upper surface of the outer periphery of the valve plug 8 is in limit fit with the outer side of the lower end of the flange 20.
The above is merely an example of the preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.
The utility model discloses still have following embodiment on above-mentioned basis:
in a further embodiment of the present invention, please continue to refer to fig. 1 to 3, the sidewall of the valve cover 3 is provided with an exhaust hole, a first screw 21 is disposed in the exhaust hole, and the first screw 21 is used for plugging the exhaust hole.
In a further embodiment of the present invention, the driving assembly 10 includes a film 23, a mounting plate 24, a housing 25 and a mounting seat 26, which are sequentially disposed from top to bottom.
In a further embodiment of the present invention, a pneumatic chamber 27 is formed between the membrane 23 and the mounting plate 24.
The utility model discloses a in the further embodiment, be equipped with electro-magnet 28 in the casing 25, the lower extreme of valve rod 7 passes membrane 23 and mounting panel 24 in proper order to stretch into electro-magnet 28 in, the activity is equipped with moves iron core 29 in the electro-magnet 28, moves the upper end of iron core 29 and offsets with the lower extreme of valve rod 7, moves in iron core 29's lower extreme stretches into mount pad 26, and be formed with the clearance between the mount pad.
The utility model discloses a in the further embodiment, supreme first step 36 and the second step 37 of being equipped with in proper order are down followed to the periphery of the lower extreme of valve rod 7.
The utility model discloses a further embodiment, supreme snap ring 31 and the chuck 32 of being equipped with in proper order are down followed to the periphery of the lower extreme of valve rod 7, and membrane 23 presss from both sides and locates between second step 37 and the chuck 32, and the spacing cooperation of snap ring 31 and first step 36, snap ring 31 and chuck 32 support and are equipped with first spring 33. Preferably, the snap ring 31 is fixedly connected to the valve stem 7.
Preferably, the mounting plate 24 has a through hole 35 in the middle thereof, and the first spring 33 passes through the through hole 35.
In a further embodiment of the present invention, the lower end of the mounting seat 26 is provided with a second screw 22, and a second spring 34 is supported between the lower end of the movable iron core 29 and the second screw 22.
Preferably, a gasket 38 is disposed between the first spring 33 and the snap ring 31.
Preferably, a second air pipe is arranged on the side wall of the mounting seat 26, the air pressure cavity 27, the shell 25, the mounting seat 26 and the second air pipe 30 are communicated, and air entering from the second air pipe can enter the air pressure cavity 27 through the mounting seat 26 and the shell 25.
Preferably, a mounting plate 30 is mounted on a side wall of the second valve body 2, and the mounting plate 30 is in sealing engagement with the second valve body 2 to seal the second valve chamber 5.
The utility model discloses set up second valve body 2 and two control stop valves 9, control accuracy is higher, and stability is better to improve the complete machine performance.
The utility model discloses a set up flange 20 in the valve gap 3, make valve plug 8 spacing between toper bulge loop 19 and flange 20, control the opening of first valve pocket 4, control accuracy is higher, and stability is better to improve the complete machine performance.
The utility model discloses a drive assembly 10 passes through electric current and atmospheric pressure dual drive, reaches the better mixing proportion of gas and air when enabling gas utensil work, and flame burning is more abundant, has improved the efficiency ratio, reduces the harmful substance and discharges.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (10)
1. A high accuracy gas proportional valve, characterized by, includes:
the valve comprises a first valve body and a valve cover, wherein a first valve cavity is formed in the first valve body, the valve cover is installed at the upper end of the first valve body, an outlet communicated with the first valve cavity is formed in the valve cover, a valve rod is arranged in the first valve body, a valve plug is arranged on the valve rod, and the valve plug is matched with the outlet in a plugging manner;
the driving assembly is arranged at the lower end of the first valve body and is used for driving the valve rod to move up and down;
the second valve body is arranged on the side wall of the first valve body, a second valve cavity is formed in the second valve body, and the second valve cavity is communicated with the first valve cavity;
and the two control stop valves are arranged on the second valve body and are respectively matched with the second valve body in a sealing way.
2. The high-precision gas proportional valve according to claim 1, further comprising: the first air pipe is connected with the lower end of the second valve body, the first air pipe is communicated with the second valve cavity, and a filter screen is arranged at the inlet of the first air pipe.
3. The high-precision gas proportional valve according to claim 2, wherein one control stop valve is positioned right above the other control stop valve;
the second valve body is internally provided with a first valve channel and a second valve channel, the first valve channel and the second valve channel are arranged along the transverse direction of the second valve body, and the first valve channel is positioned above the second valve channel;
the second valve cavity comprises a first channel, a cavity, a second channel and a third channel which are sequentially communicated, the first channel is positioned in the first valve channel, the second channel is positioned in the second valve channel, the first channel is communicated with the first valve cavity, and the third channel is communicated with the first air pipe;
the control stop valve is matched with the first valve channel plug, and the other control stop valve is matched with the second valve channel plug.
4. The high-precision gas proportional valve as claimed in claim 1, wherein a conical convex ring is formed on the inner periphery of the first valve body at the upper end of the first valve chamber, and the valve plug is in sealing fit with the conical convex ring.
5. The high-precision gas proportional valve according to claim 4, wherein a flange is arranged on the inner wall of the valve cover at the outlet, the flange is arranged in the vertical direction, the flange extends into the first valve body, and the valve plug is limited between the conical convex ring and the flange.
6. The high-precision gas proportional valve as claimed in claim 5, wherein the upper surface of the conical convex ring is inclined downward, the lower end of the flange is conical, the outer periphery of the valve plug is inclined upward, the lower surface of the outer periphery of the valve plug is in limit fit with the upper surface of the conical convex ring, and the upper surface of the outer periphery of the valve plug is in limit fit with the outer side of the lower end of the flange.
7. The high-precision gas proportional valve according to claim 5, wherein a vent hole is formed in a side wall of the valve cover, a first screw is arranged in the vent hole, and the first screw is used for blocking the vent hole.
8. The high-precision gas proportional valve according to claim 1, wherein the driving assembly comprises a membrane, a mounting plate, a shell and a mounting seat which are arranged in sequence from top to bottom;
an air pressure cavity is formed between the membrane and the mounting plate;
be equipped with the electro-magnet in the casing, the lower extreme of valve rod passes in proper order the membrane with the mounting panel, and stretch into in the electro-magnet, the electro-magnet internalization is equipped with moves the iron core, move the upper end of iron core with the lower extreme of valve rod offsets, move the lower extreme of iron core and stretch into in the mount pad, and with be formed with the clearance between the mount pad.
9. The high-precision gas proportional valve according to claim 8, wherein a first step and a second step are sequentially arranged on the periphery of the lower end of the valve rod from bottom to top;
supreme snap ring and the chuck of being equipped with in proper order are down followed to the periphery of the lower extreme of valve rod, the membrane presss from both sides and locates the second step with between the chuck, the snap ring with the spacing cooperation of first step, the snap ring with the chuck supports and is equipped with first spring.
10. The high-precision gas proportional valve according to claim 9, wherein a second screw is disposed at a lower end of the mounting seat, and a second spring is disposed between the lower end of the movable iron core and the second screw in an abutting manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021915968.4U CN214093157U (en) | 2020-09-04 | 2020-09-04 | High-precision gas proportional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021915968.4U CN214093157U (en) | 2020-09-04 | 2020-09-04 | High-precision gas proportional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214093157U true CN214093157U (en) | 2021-08-31 |
Family
ID=77418772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021915968.4U Active CN214093157U (en) | 2020-09-04 | 2020-09-04 | High-precision gas proportional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214093157U (en) |
-
2020
- 2020-09-04 CN CN202021915968.4U patent/CN214093157U/en active Active
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