CN220227903U - Vacuum diaphragm valve - Google Patents
Vacuum diaphragm valve Download PDFInfo
- Publication number
- CN220227903U CN220227903U CN202322104922.4U CN202322104922U CN220227903U CN 220227903 U CN220227903 U CN 220227903U CN 202322104922 U CN202322104922 U CN 202322104922U CN 220227903 U CN220227903 U CN 220227903U
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- China
- Prior art keywords
- vacuum
- diaphragm
- valve
- piston
- air hole
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- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000004907 flux Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model discloses a vacuum diaphragm valve, which comprises a valve body and a diaphragm, wherein a transmission cavity and a working cavity are respectively arranged at the upper side and the lower side of the diaphragm, a main spring and a pressing block are arranged in the transmission cavity, a valve cover is arranged at the upper part of the transmission cavity, a vacuum air hole for connecting an input end of a vacuum system or the outside atmosphere is arranged on the valve cover, an end cover is arranged at the lower part of the transmission cavity, a positive pressure air hole for connecting an output end of the vacuum system or the outside atmosphere is arranged on the inner wall of the end cover, a lifting rod is connected with the center of the end cover in a sliding and sealing manner, a piston is fixedly arranged at the upper end of the lifting rod, and the lower end of the lifting rod is fixedly connected with the pressing block. The utility model is provided with the piston and the lifting rod, the upper side and the lower side of the piston are respectively connected with the input end and the output end of the vacuum system through the vacuum air hole and the positive pressure air hole, the lifting force is large when in work, and the larger main spring resistance can be overcome, so that the diaphragm flux and the response speed are improved, and the end cover is arranged between the piston and the diaphragm, so that the damage of working air pressure to the diaphragm can be reduced.
Description
Technical Field
The utility model relates to the technical field of diaphragm valves, in particular to a vacuum diaphragm valve.
Background
The traditional vacuum diaphragm valve can only be driven by positive pressure or electric drive, but the vacuum pipeline diaphragm valve driven by vacuum is used, and the vacuum pipeline diaphragm valve has the problems of more parts, complex structure, poor sealing performance and the like. Meanwhile, the limited stroke of the diaphragm causes small flux and poor use effect. In the field of vacuum sewage discharge, the medium flow speed is high, and the response speed of the diaphragm greatly influences the sealing performance of a pipeline and the control of flow noise. The diaphragm valve (CN 201120078343.1 is a vacuum diaphragm valve) in the vacuum field controls the compression of the spring when the negative pressure is applied to open the valve, and as the vacuum system needs to compress the spring, the diaphragm is easy to damage when the working negative pressure is high, the diaphragm flux is small and the response is slow when the working negative pressure is low, and the cost of the vacuum system is increased.
Disclosure of Invention
The utility model aims to solve the problems in the prior art, and provides a vacuum diaphragm valve which improves diaphragm flux and response speed and reduces damage to a diaphragm.
The utility model solves the technical problems by adopting the technical scheme that: the utility model provides a vacuum diaphragm valve, includes valve body and diaphragm, and the upper and lower both sides of diaphragm are equipped with transmission chamber and working chamber respectively, and the both ends of working chamber are equipped with suction end and vacuum end respectively, and the inside of transmission chamber is equipped with main spring and briquetting, briquetting and diaphragm fixed connection, and the upper portion of transmission chamber is equipped with the valve gap, is equipped with the vacuum gas pocket that is used for connecting vacuum system input or external atmosphere on the valve gap, the lower part of transmission chamber is equipped with the end cover, is equipped with the malleation gas pocket that is used for connecting vacuum system output or external atmosphere on the inner wall of end cover, and the central sliding seal of end cover is connected with the lifter, and the upper end fixed mounting of lifter has the piston, piston and transmission chamber sealing sliding connection, and main spring is located between valve gap and the end cover, the lower extreme and the briquetting fixed connection of lifter.
Further perfecting, the valve cover is provided with an adjusting seat, an adjusting screw is connected to the adjusting seat through threads, and a counterweight pressing ring is arranged below the adjusting screw.
Further perfecting, the vacuum system comprises a vacuum pump, wherein the input end and the output end of the vacuum pump are respectively connected with a vacuum air hole and a positive pressure air hole through two pipelines, and the two pipelines are provided with electromagnetic reversing valves.
Further perfecting, the bottom of the working cavity is provided with a bulge, the bottom of the pressing block is provided with a V-shaped groove matched with the bulge, and a buffer cushion is arranged in the V-shaped groove.
The beneficial effects of the utility model are as follows: the utility model is provided with the piston and the lifting rod, the upper side and the lower side of the piston are respectively connected with the input end and the output end of the vacuum system through the vacuum air hole and the positive pressure air hole, the lifting force is large when in work, and the larger main spring resistance can be overcome, so that the diaphragm flux and the response speed are improved, and the end cover is arranged between the piston and the diaphragm, so that the damage of working air pressure to the diaphragm can be reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
reference numerals illustrate: 1. valve body, 2, diaphragm, 3, transmission chamber, 4, working chamber, 5, suction end, 6, vacuum end, 7, main spring, 8, briquetting, 9, valve gap, 10, vacuum gas pocket, 11, end cover, 12, lifter, 13, piston, 14, adjusting seat, 15, adjusting screw, 16, counter weight clamping ring, 18, positive pressure gas pocket, 19, vacuum pump, 20, electromagnetic reversing valve.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
referring to fig. 1: the vacuum diaphragm valve in this embodiment 1 comprises a valve body 1 and a diaphragm 2, wherein a transmission cavity 3 and a working cavity 4 are respectively arranged on the upper side and the lower side of the diaphragm 2, a suction end 5 and a vacuum end 6 are respectively arranged at the two ends of the working cavity 4, a main spring 7 and a pressing block 8 are arranged in the transmission cavity 3, the pressing block 8 is fixedly connected with the diaphragm 2, a valve cover 9 is arranged on the upper part of the transmission cavity 3, a vacuum air hole 10 for connecting an input end of a vacuum system or the outside atmosphere is arranged on the valve cover 9, an end cover 11 is arranged on the lower part of the transmission cavity 3, a positive pressure air hole 18 for connecting an output end of the vacuum system or the outside atmosphere is arranged on the inner wall of the end cover 11, a lifting rod 12 is connected with the center of the end cover 11 in a sliding and sealing manner, a piston 13 is fixedly arranged at the upper end of the lifting rod 12, the piston 13 is in sealing and sliding connection with the transmission cavity 3, the main spring 7 is arranged between the valve cover 9 and the end cover 11, and the lower end of the lifting rod 12 is fixedly connected with the pressing block 8.
The working principle of the utility model is as follows: when the valve is used in a vacuum toilet system, the suction end 5 and the vacuum end 6 are respectively connected with a toilet pipeline and a vacuum sewage pipeline, the diaphragm 2 deforms downwards under the pressure action of the main spring 7, the inner wall at the bottom of the working cavity 3 is tightly pressed to realize sealing, the fluid medium flowing between the suction end 5 and the vacuum end 6 is cut off, when the flow of the fluid medium is required to be stopped, the vacuum system is started, the vacuum system input end vacuumizes the transmission cavity 3 through the vacuum air hole 10 to form negative pressure, the vacuum system output end pressurizes the space of the piston 13 and the end cover 11 through the positive pressure air hole 18 to form positive pressure, the piston 13 overcomes the elasticity of the main spring 7 under the action of the air pressure difference at the upper side and the lower side, the lifting rod 12 is driven to move upwards, the pressing block 8 is driven to lift the diaphragm 2 upwards, the opening of the valve body is realized, and the fluid medium at the suction end 5 can flow to the vacuum end 6; when the valve needs to be closed, the pressure of the vacuum system is withdrawn, the vacuum air hole 10 and the positive pressure air hole 18 are communicated with atmospheric pressure, and the diaphragm 2 is reset downwards under the action of the main spring 7, so that the valve is kept closed.
In embodiment 2, on the basis of embodiment 1, the valve cover 9 is provided with an adjusting seat 14, an adjusting screw 15 is screwed on the adjusting seat 14, and a counterweight pressing ring 16 is arranged below the adjusting screw 15. The gravity on the counterweight pressing ring 16 can be transmitted to the diaphragm 2 through the main spring 7, so that the pretightening force of the diaphragm 2 during closing is improved, and the leakage preventing capability is improved. The adjusting screw 15 can move downwards under the action of the screw thread when rotating forwards, the counterweight pressing ring 16 is pushed to press downwards to improve the compression amount of the main spring 7, and the elasticity of the spring is adjusted.
In embodiment 3, in order to further improve the leakage preventing performance when the valve is closed on the basis of embodiment 1, the vacuum system comprises a vacuum pump 19, wherein an input end and an output end of the vacuum pump 19 are respectively connected with the vacuum air hole 10 and the positive pressure air hole 18 through two pipelines, and an electromagnetic reversing valve 20 is installed on the two pipelines. After the valve is closed, the electromagnetic reversing valve 20 can be switched to the next station when being electrified, so that the input end of the vacuum pump 19 is connected with the positive pressure air hole 18 instead, the lower side of the piston 13 is changed to positive pressure, the output end of the vacuum pump 19 is connected with the vacuum air hole 10 instead, the upper side of the piston 13 is changed to positive pressure, the pressure of the two sides is added with the elasticity of the main spring 7, the pressing block 8 can be driven to press the diaphragm 2, and the sealing performance of the valve when being closed is improved.
While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the utility model.
Claims (3)
1. The utility model provides a vacuum diaphragm valve, including valve body (1) and diaphragm (2), the upper and lower both sides of diaphragm (2) are equipped with transmission chamber (3) and working chamber (4) respectively, the both ends of working chamber (4) are equipped with suction end (5) and vacuum end (6) respectively, the inside of transmission chamber (3) is equipped with main spring (7) and briquetting (8), briquetting (8) and diaphragm (2) fixed connection, the upper portion of transmission chamber (3) is equipped with valve gap (9), be equipped with on valve gap (9) and be used for connecting vacuum system input or external atmospheric vacuum gas pocket (10), its characterized in that: the lower part of transmission chamber (3) is equipped with end cover (11), is equipped with positive pressure gas pocket (18) that are used for connecting vacuum system output or external atmosphere on the inner wall of end cover (11), and the center sliding seal of end cover (11) is connected with lifter (12), and the upper end fixed mounting of lifter (12) has piston (13), and piston (13) and transmission chamber (3) seal sliding connection, main spring (7) are located between valve gap (9) and end cover (11), the lower extreme and the briquetting (8) fixed connection of lifter (12).
2. A vacuum diaphragm valve according to claim 1, characterized in that: the valve cover (9) is provided with an adjusting seat (14), an adjusting screw (15) is connected to the adjusting seat (14) in a threaded mode, and a counterweight pressing ring (16) is arranged below the adjusting screw (15).
3. A vacuum diaphragm valve according to claim 1, characterized in that: the vacuum system comprises a vacuum pump (19), wherein the input end and the output end of the vacuum pump (19) are respectively connected with a vacuum air hole (10) and a positive pressure air hole (18) through two pipelines, and an electromagnetic reversing valve (20) is arranged on the two pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322104922.4U CN220227903U (en) | 2023-08-07 | 2023-08-07 | Vacuum diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322104922.4U CN220227903U (en) | 2023-08-07 | 2023-08-07 | Vacuum diaphragm valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220227903U true CN220227903U (en) | 2023-12-22 |
Family
ID=89180520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322104922.4U Active CN220227903U (en) | 2023-08-07 | 2023-08-07 | Vacuum diaphragm valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220227903U (en) |
-
2023
- 2023-08-07 CN CN202322104922.4U patent/CN220227903U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |