CN204371672U - A kind of anti-backflow vacuum pump using circulatory water of adjustable degree of vacuum - Google Patents
A kind of anti-backflow vacuum pump using circulatory water of adjustable degree of vacuum Download PDFInfo
- Publication number
- CN204371672U CN204371672U CN201420772590.5U CN201420772590U CN204371672U CN 204371672 U CN204371672 U CN 204371672U CN 201420772590 U CN201420772590 U CN 201420772590U CN 204371672 U CN204371672 U CN 204371672U
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- vacuum pump
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- vacuum
- ball
- backflow
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
An anti-backflow vacuum pump using circulatory water for adjustable degree of vacuum, the utility model relates to a kind of vacuum pump using circulatory water, and it overcomes the deficiencies in the prior art, provides a kind of anti-backflow vacuum pump using circulatory water of adjustable degree of vacuum.The utility model comprises vacuum pump main body and connected air exhaust nozzle, air exhaust nozzle is connected with control valve, described control valve comprises suction tude, valve body and steam outlet pipe, valve inner is provided with ball, ball is contained in the mouth of pipe place inside suction tude, and ball is connected on steam outlet pipe by spring, and spring fitting is on spring seat, have pressure shell fragment above spring, pressure shell fragment is pressed on spring by the adjusting knob above valve body.This vacuum pump can realize regulating degree of vacuum size that the water suck-back in vacuum pump can also be prevented to be back in Suction filtration device, and directly can close vacuum pump after use terminates, more convenient to operate.
Description
Technical field
The utility model relates to a kind of vacuum pump using circulatory water, especially relates to a kind of anti-backflow vacuum pump using circulatory water of adjustable degree of vacuum.
Background technique
Vacuum pump using circulatory water is Nash hytor again, is a kind of change by pump chamber to realize the coarse vacuum pump of air-breathing, compression and exhaust.Vacuum pump using circulatory water is used as self-priming water pump at first, then gradually for many industrial departments such as oil, chemical industry, machinery, mine, light industry, medicine and food.Be mainly used to now coordinate Suction filtration device to carry out suction filtration work in research work.And the circulating water type vacuum pump degree of vacuum of at present institute's extensive use cannot regulate and use terminate after first must cut off that vacuum pump is connected with Suction filtration device pipeline, just can close vacuum pump.Otherwise the water meeting suck-back that there will be in vacuum pump is back to the phenomenon in Suction filtration device.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of anti-backflow vacuum pump using circulatory water of adjustable degree of vacuum.This vacuum pump can realize regulating degree of vacuum size that the water suck-back in vacuum pump can also be prevented to be back in Suction filtration device, and directly can close vacuum pump after use terminates, more convenient to operate.
For achieving the above object, the utility model takes following technical proposals:
A kind of anti-backflow vacuum pump using circulatory water of adjustable degree of vacuum, comprise vacuum pump main body and connected air exhaust nozzle, air exhaust nozzle is connected with control valve, described control valve comprises suction tude, valve body and steam outlet pipe, and valve inner is provided with ball, and ball is contained in the mouth of pipe place inside suction tude, ball is connected on steam outlet pipe by spring, spring fitting, on spring seat, has pressure shell fragment above spring, pressure shell fragment is pressed on spring by the adjusting knob above valve body.
According to the anti-backflow vacuum pump using circulatory water of described adjustable degree of vacuum, described pressure shell fragment material is stainless steel.
The utility model advantage is that structure is simple, can realize regulating degree of vacuum size that the water suck-back in vacuum pump can also be prevented to be back in Suction filtration device by the control valve be arranged on air exhaust nozzle mouth, directly vacuum pump can be closed after use terminates, more convenient to operate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of control valve in the utility model.
In accompanying drawing: 1, vacuum pump main body; 2, air exhaust nozzle; 3, control valve; 4, steam outlet pipe; 5, spring; 6, ball; 7, suction tude; 8, adjusting knob; 9, pressure shell fragment; 10, spring seat.
Embodiment
The anti-backflow vacuum pump using circulatory water of adjustable degree of vacuum, comprises the control valve 3 that vacuum pump main body 1, air exhaust nozzle 2 and air exhaust nozzle 2 are connected.Described air exhaust nozzle 2 arranges screw thread, salable docking control valve 3; Control valve 3 one side joint air exhaust nozzle 2, another side joint Suction filtration device.Control valve 3 comprises valve body, and valve body communicates with air exhaust nozzle 2, and the suction tude 7 of valve body is designed with ball 6, ball 6 is connected with spring 5, the other end of spring 5 is connected on steam outlet pipe 4, and spring 5 is designed with pressure shell fragment 9 above, and pressure shell fragment 9 has adjusting knob 8 above.
Below in conjunction with accompanying drawing 1-2 and specific embodiment, the utility model is described in further detail.
Anti-backflow vacuum pump using circulatory water described in the utility model, comprises vacuum pump main body 1 and air exhaust nozzle 2, air exhaust nozzle 2 connection control valve 3.Be provided with pressure shell fragment 9 above valve inner spring 5, be provided with adjusting knob 8 above pressure shell fragment 9, adjusting knob 8 is threaded on valve body.The end of adjusting knob 8 screw rod can be provided with a round boss, and round boss is contained on pressure shell fragment 9 circular hole, prevents pressure shell fragment 9 from sliding off working position.
When preparing suction filtration work, first Suction filtration device is connected with suction tude 7, first unscrews adjusting knob 8.Now, the elastic force of spring 5 can make ball 6 arrive a place, blocks suction tude 7.Then screw adjusting knob 8, pressure shell fragment 9 holddown spring 5, spring 5 is in locking state.Open vacuum pump main body 1 and start suction filtration, now degree of vacuum is 0.Unscrew adjusting knob 8 and regulate the power size applied spring 5, adjusting knob 8 pairs of spring 5 pressure are less, and ball 6 overcomes less power just can leave the mouth of pipe, and valve is more easily opened by air pressure.
Unscrew adjusting knob 8 and just can realize different vacuum level requirement, when adjusting knob all unscrews, ball 6 arrives b place, and now degree of vacuum reaches maximum.After suction filtration terminates, directly close vacuum pump main body 1, after vacuum pump quits work, under the effect of spring force and atmospheric pressure, the suction tude 7 of control valve 3 is in closed condition automatically, thus effectively prevents the water in vacuum pump to reflux to enter in Suction filtration device.
Claims (2)
1. the anti-backflow vacuum pump using circulatory water of an adjustable degree of vacuum, comprise vacuum pump main body (1) and connected air exhaust nozzle (2), it is characterized in that: air exhaust nozzle (2) is connected with control valve (3), described control valve (3) comprises suction tude (7), valve body and steam outlet pipe (4), valve inner is provided with ball (6), ball (6) is contained in the mouth of pipe place of suction tude (7) inner side, ball (6) is connected on steam outlet pipe (4) by spring (5), spring (5) is arranged on above spring seat (10), there is pressure shell fragment (9) spring (5) top, pressure shell fragment (9) is pressed on spring (5) by the adjusting knob (8) above valve body.
2. the anti-backflow vacuum pump using circulatory water of adjustable degree of vacuum according to claim 1, is characterized in that: described pressure shell fragment (9) material is stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772590.5U CN204371672U (en) | 2014-12-10 | 2014-12-10 | A kind of anti-backflow vacuum pump using circulatory water of adjustable degree of vacuum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420772590.5U CN204371672U (en) | 2014-12-10 | 2014-12-10 | A kind of anti-backflow vacuum pump using circulatory water of adjustable degree of vacuum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371672U true CN204371672U (en) | 2015-06-03 |
Family
ID=53327897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420772590.5U Expired - Fee Related CN204371672U (en) | 2014-12-10 | 2014-12-10 | A kind of anti-backflow vacuum pump using circulatory water of adjustable degree of vacuum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204371672U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998785A (en) * | 2015-07-01 | 2015-10-28 | 肖叶 | Backflow prevention controller for pneumatic spraying machine |
| CN109326484A (en) * | 2018-11-28 | 2019-02-12 | 河南中医药大学 | A kind of vacuum interrupter of adjustable vacuum degree |
| CN111026176A (en) * | 2019-12-19 | 2020-04-17 | 北京航天益森风洞工程技术有限公司 | High-precision self-adaptive vacuum degree control system |
-
2014
- 2014-12-10 CN CN201420772590.5U patent/CN204371672U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104998785A (en) * | 2015-07-01 | 2015-10-28 | 肖叶 | Backflow prevention controller for pneumatic spraying machine |
| CN109326484A (en) * | 2018-11-28 | 2019-02-12 | 河南中医药大学 | A kind of vacuum interrupter of adjustable vacuum degree |
| CN111026176A (en) * | 2019-12-19 | 2020-04-17 | 北京航天益森风洞工程技术有限公司 | High-precision self-adaptive vacuum degree control system |
| CN111026176B (en) * | 2019-12-19 | 2022-12-09 | 北京航天益森风洞工程技术有限公司 | High-precision self-adaptive vacuum degree control system |
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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: 20150603 Termination date: 20161210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |