CN205297995U - Vacuum test device - Google Patents
Vacuum test device Download PDFInfo
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- CN205297995U CN205297995U CN201521085258.2U CN201521085258U CN205297995U CN 205297995 U CN205297995 U CN 205297995U CN 201521085258 U CN201521085258 U CN 201521085258U CN 205297995 U CN205297995 U CN 205297995U
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Abstract
The utility model discloses a vacuum test device is applicable to the negative pressure occasion that absorbs water. This vacuum test device is structural including inlet, extraction opening, barrel, measuring room, the pipeline of bleeding, check valve, solenoid valve, manual valve, detection electrode, terminal box. Install the device in extracting vacuous system, can go out the state that the vacuum formed by automated inspection to the instantaneous signal that provides is used for stopping power equipment. Effectively the vacuum production can avoid the liquid medium to get into follow -up pipeline and power equipment again. The device can effectively avoid the separation and the recovery of raffinate, and messenger system operation is simple and convenient more, safety, economy, cleanness.
Description
Technical field
This utility model relates to a kind of vacuum checking device, belongs to vacuum automation detection and control field, is particularly well-suited to centrifugal pump evacuation diversion and siphon filter vacuum water diversion.
Background technology
The conveying pump of waterworks, frequently with centrifugal pump, needs to fill in the pump housing water before this type of pump operation. Therefore, the conveying pump after stopping usually needing evacuation before being again started up, and discharges the air in the pump housing and pipeline. Siphon filter running each cycle is also required to vacuum siphon system to siphon evacuation.
In the occasion of both the above evacuation, it is both needed to extract air with vacuum pump. After opening vacuum pump, air is discharged, and water is under atmospheric pressure along direction flowing of bleeding, until entering the pipeline of evacuation. In the application scenario of centrifugal pump extracting vacuum, after water is completely filled with the pump housing, pumping process can be stopped, starting centrifugal pump immediately; In the application scenario of siphon filter extracting vacuum, water is introduced into siphon top can stop pumping process, completes Precipitation Process by law of connected vessels immediately.
In the occasion of both the above evacuation, if stopping pumping process too early, then equipment cisco unity malfunction; Crossed stopping pumping process, then water enters vacuum suction pipeline, even up to vacuum pump, both uneconomical, causes difficulty to again follow-up gas-liquid separation, therefore, significant for both application scenarios at appropriate position detection vacuum state.
Utility model content
In order to achieve the above object, this utility model provides a kind of vacuum checking device, can detect vacuum and export signal, can automatically shut down again vacuum suction pipeline after vacuum is formed.
Scheme of the present utility model is as follows: a kind of vacuum checking device, including cylinder, it is characterised in that described cylinder two ends are respectively provided with inlet and bleeding point;
Electromagnetic valve and check-valves are set in described cylinder; Described bleeding point connects with electromagnetic valve one end, and the described electromagnetic valve other end connects with check-valves one end; The described check-valves other end connects with inlet and forms airtight sensing chamber between the two, is the place of detection vacuum;
Arrange one group of detecting electrode in described sensing chamber to be connected with the rosette outside cylinder, be used for detecting vacuum state.
Further, arranging hand-operated valve outside described cylinder, described hand-operated valve one end connects with sensing chamber, and the other end connects with the connecting pipeline of bleeding point and electromagnetic valve.
Further, a pair described detecting electrode arranges length difference, and when sensing chamber's internal-filling liquid reaches 2/3, detecting electrode is connected, and exports the signal of telecommunication.
This utility model device is installed in the system of extracting vacuum, can automatically detect the state that vacuum is formed, and instantaneous provide signal, be used for stopping power-equipment. Vacuum can be effectively formed, liquid medium can be avoided again to enter follow-up pipeline and power-equipment. This device can be prevented effectively from separation and the recovery of residual liquid, makes system run easier, safety, economy, cleaning.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described further.
Vacuum checking device described in the utility model, structure includes inlet 1, bleeding point 2, cylinder 3, sensing chamber 4, exhaust pipe 5, check-valves 6, electromagnetic valve 7, hand-operated valve 8, detecting electrode 9, rosette 10. Inlet 1 one end is communicated in the sensing chamber 4 in device cylinder, and the other end is vacuum suction pipeline top, is connected to and needs the place of detection vacuum to adopt standard thread import. Bleeding point 2 one end is communicated in the electromagnetic valve 3 in device cylinder, and the other end is connected to vacuum pump by vacuum suction pipeline, adopts standard thread import.
Cylinder is the shell of device critical piece. Size is approximately diameter 150mm, the tubular of high 200mm. Sensing chamber, exhaust pipe, check-valves, electromagnetic valve, detecting electrode are set in cylinder. Sensing chamber 4 is a cavity, is the place of detection vacuum, and the inside disposes detecting electrode 9, and when sensing chamber's internal-filling liquid reaches 2/3, detecting electrode is connected, and exports the signal of telecommunication.
Check-valves 6 is positioned at the rear end of sensing chamber on exhaust pipe. For preventing pumping process from terminating rear exhaust pipe and liquid working pipeline connection, keep vacuum state. Electromagnetic valve 7 is positioned at the rear end of check-valves on exhaust pipe. Vacuum suction pipeline is cut off for vacuum, it is prevented that working media (water) enters vacuum line when being formed. Hand-operated valve 8 is the bypass of check-valves and electromagnetic valve on exhaust pipe. Manually can switch on or off vacuum suction pipeline by valve when electromagnetic valve damages, reach the purpose of Emergency use.
The method of work of this utility model device is as follows: when needs extracting vacuum, opens solenoid valve, and vacuum checking device is a-road-through, and air enters exhaust pipe via 1 inlet, 4 sensing chamber, 6 check-valves, 7 electromagnetic valves, 2 bleeding points, vacuum pump extract out. When the complete vacuum of air extraction is formed, working media (water) enters 4 sensing chamber via 1 inlet, the detecting electrode conducting in sensing chamber, drives closed electromagnetic valve, cuts off vacuum suction pipeline, and export signal, is used for stopping vacuum pump and opening centrifugal pump. When 7 electromagnetic valves damage, 8 hand-operated valves replace electromagnetic valve work.
Although above detailed description of the invention of the present utility model being given detailed description and explanation; but it should be noted that; above-mentioned embodiment can be carried out various equivalence according to conception of the present utility model and change and amendment by us; function produced by it still without departing from description contain spiritual time, all should within protection domain of the present utility model.
Claims (3)
1. a vacuum checking device, including cylinder, it is characterised in that described cylinder two ends are respectively provided with inlet and bleeding point;
Electromagnetic valve and check-valves are set in described cylinder; Described bleeding point connects with electromagnetic valve one end, and the described electromagnetic valve other end connects with check-valves one end; The described check-valves other end connects with inlet and forms airtight sensing chamber between the two, is the place of detection vacuum;
Arrange one group of detecting electrode in described sensing chamber to be connected with the rosette outside cylinder, be used for detecting vacuum state.
2. a kind of vacuum checking device according to claim 1, is characterized in that, arranging hand-operated valve outside described cylinder, described hand-operated valve one end connects with sensing chamber, and the other end connects with the connecting pipeline of bleeding point and electromagnetic valve.
3. a kind of vacuum checking device according to claim 1 and 2, is characterized in that, one group of described detecting electrode arranges length difference, and when sensing chamber's internal-filling liquid reaches 2/3, detecting electrode is connected, and exports the signal of telecommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521085258.2U CN205297995U (en) | 2015-12-24 | 2015-12-24 | Vacuum test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521085258.2U CN205297995U (en) | 2015-12-24 | 2015-12-24 | Vacuum test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205297995U true CN205297995U (en) | 2016-06-08 |
Family
ID=56472176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521085258.2U Active CN205297995U (en) | 2015-12-24 | 2015-12-24 | Vacuum test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205297995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485040A (en) * | 2015-12-24 | 2016-04-13 | 合肥敬业电子有限公司 | Vacuum detection device and detection method |
-
2015
- 2015-12-24 CN CN201521085258.2U patent/CN205297995U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485040A (en) * | 2015-12-24 | 2016-04-13 | 合肥敬业电子有限公司 | Vacuum detection device and detection method |
| CN105485040B (en) * | 2015-12-24 | 2018-04-27 | 合肥敬业电子有限公司 | A kind of vacuum checking device and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Vacuum detection device Effective date of registration: 20170714 Granted publication date: 20160608 Pledgee: Anhui Feixi rural commercial bank Limited by Share Ltd small temple sub branch Pledgor: HEFEI DEDICATED ELECTRONICS CO., LTD. Registration number: 2017340000121 |