CN201013910Y - Vacuum breakdown device of vacuum stop valve during liquid negative-pressure conveying - Google Patents
Vacuum breakdown device of vacuum stop valve during liquid negative-pressure conveying Download PDFInfo
- Publication number
- CN201013910Y CN201013910Y CNU2007200352010U CN200720035201U CN201013910Y CN 201013910 Y CN201013910 Y CN 201013910Y CN U2007200352010 U CNU2007200352010 U CN U2007200352010U CN 200720035201 U CN200720035201 U CN 200720035201U CN 201013910 Y CN201013910 Y CN 201013910Y
- Authority
- CN
- China
- Prior art keywords
- barrier film
- cavity
- negative pressure
- stop valve
- sealing seat
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to a timing close device for controlling a vacuum stop valve applied in liquid negative pressure transport. The device comprises a shell body, an inner side wall of which is erected with an elastic septum that separates an inner cavity of the shell body into a septum upper cavity and a septum lower cavity. A sealing seat is erected between the septum and the underside of the shell body and the sealing seat divides the septum lower cavity into a septum lower cavity and an air guiding cavity, wherein, the air guiding cavity is provided with air guiding holes that is communicated with atmosphere. An air guiding slot is arranged at one side of the air guiding cavity of the sealing seat and the air guiding slot is connected with a pipe interface that is connected with outer pipes. A transmission rod is arranged on the septum and a sealing cover board that can cover a cut of the air guiding slot is arranged at the end part of the transmission rod through the sealing seat. And a negative pressure interface that is connected with the pipe is arranged on the septum upper cavity. The utility model has the advantages of simple structure, flexible and accurate control, high reliability and low production cost, thereby being very applicable in liquid negative pressure transport.
Description
Technical field
The utility model relates to a kind of device of in good time closing that is applied to control vaccum stop valve in the liquid negative pressure transportation.
Background technique
In the present liquid negative pressure transportation, vaccum stop valve adopts a solenoid valve and a liquid level sensor.When liquid level arrived low level, liquid level sensor provided the SC sigmal control solenoid valve and opens, and makes atmosphere enter the upper chamber of air cylinder of vaccum stop valve, thereby vaccum stop valve is closed under action of reset spring.
Because the application pipe network of vaccum stop valve is more and more longer, reaches several kilometers even tens kilometers, and is poor by the cable transmission signal reliability, the cost height.This mode has limited liquid negative pressure transportation broad application greatly.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and the vacuum breaking device of vaccum stop valve in a kind of simple in structure, control is sensitive and accurate, reliability is high, cheap for manufacturing cost liquid negative pressure transportation is provided.
The technological scheme that provides according to the utility model, on the housing madial wall, set up elastic diaphragm, it is divided into barrier film epicoele and barrier film cavity of resorption with the internal cavities of housing, set up sealing seat between barrier film and the housing bottom surface, the sealing seat is divided into barrier film cavity of resorption and air guide cavity to the barrier film cavity of resorption, have the gas port that is communicated with atmosphere on the air guide cavity, air guide cavity one side at sealing seat is provided with gas guide groove, this gas guide groove is connected with the pipe joint that links to each other with extraneous pipeline, on barrier film, be provided with drive link, this drive link passes sealing seat and is provided with the sealed cover that can cover the gas guide groove port in its end, is provided with on the barrier film epicoele and the joining negative pressure interface of pipeline.
On the wall of the chamber of barrier film cavity of resorption, have the gas port that is communicated with atmosphere.Be provided with adjusting screw on the wall of the chamber of barrier film epicoele, be provided with support slice on this adjustment screw termination in the barrier film epicoele, be provided with spring in the barrier film epicoele, this spring one end connects the upper surface of barrier film, and its other end is connected on the support slice.Outside support slice, go back buckle closure the seal dissepiment that adjusting screw and barrier film epicoele are isolated is arranged.Gas guide groove ringwise.
The utility model has the advantages that: simple in structure, control is sensitive and accurate, reliability is high, cheap for manufacturing cost, be very suitable for the negative pressure transportation of liquid.
Description of drawings
Fig. 1 is an overall structure generalized section of the present utility model.
Embodiment
As shown in the figure: on housing 4 madial walls, set up elastic diaphragm 7, it is divided into barrier film epicoele 14 and barrier film cavity of resorption 15 with the internal cavities of housing 4, set up sealing seat 6 between barrier film 7 and housing 4 bottom surfaces, sealing seat 6 is divided into barrier film cavity of resorption 15 and air guide cavity 3 to barrier film cavity of resorption 15, on the wall of the chamber of barrier film cavity of resorption 15, have the gas port 2 that is communicated with atmosphere, air guide cavity 3 has the gas port 2 that is communicated with atmosphere, air guide cavity 3 one sides at sealing seat 6 are provided with ringwise gas guide groove 5, this gas guide groove 5 is connected with the pipe joint 16 that links to each other with extraneous pipeline, on barrier film 7, be provided with drive link 8, this drive link 8 passes sealing seat 6 and is provided with the sealed cover 1 that can cover gas guide groove 5 ports in its end, open or close the connection of gas guide groove 5 air guide cavitys 3 by the motion of sealed cover 1, on barrier film epicoele 14, be provided with and the joining negative pressure interface 13 of pipeline.
On the wall of the chamber of barrier film epicoele 14, be provided with adjusting screw 12, be provided with support slice 11 on this adjustment screw 12 termination in barrier film epicoele 14, be provided with spring 9 in the barrier film epicoele 14, these spring 9 one ends connect the upper surface of barrier film 7, its the other end is connected on the support slice 11, going back buckle closure outside support slice 11 has the seal dissepiment 10 that adjusting screw 12 and barrier film epicoele 14 are isolated, by the pretightening force that passes in and out Regulation spring 9 up and down of this adjusting screw 12.
During work, if negative pressure interface 13 does not connect negative pressure, elastic diaphragm 7 is vertical position, sealed cover 1 is separated with gas guide groove 5 openings, gas guide groove 5 is communicated with air guide cavity 3, the atmosphere of coming in from gas port 2 just can enter in the vaccum stop valve by the pipe joint 16 that links to each other with gas guide groove 5, makes the vacuum breaking of vaccum stop valve upper chamber of air cylinder, makes cylinder piston move downward and closes vaccum stop valve; When 13 connections of negative pressure interface have negative pressure, the crooked to the right holddown spring 9 of elastic diaphragm 7 under suction function, it is drawing drive link 8 and sealed cover 1 moves right, cover the aperture position of annular gas guide groove 5 tightly until sealed cover 1, at this moment the atmosphere of coming in from gas port 2 just can not enter in the vaccum stop valve by the pipe joint 16 that links to each other with gas guide groove 5, and the vacuum state in the vaccum stop valve can not destroyed; At this moment, if the negative pressure state that negative pressure interface 13 is connected suddenly disappears, the restoring force of the thrust of spring 9 and elastic diaphragm 7 promotes drive link 8 to left movement, sealed cover 1 is pushed open from the aperture position of annular gas guide groove 5, gas guide groove 5 is communicated with air guide cavity 3 again, the atmosphere of coming in from gas port 2 can enter in the vaccum stop valve by the pipe joint 16 that links to each other with gas guide groove 5 again, has destroyed the vacuum state of the inside.
The resistance that runs into when reducing the answer of elastic diaphragm 7 has the gas port 2 that is communicated with atmosphere on the wall of the chamber of barrier film cavity of resorption 15, be convenient to the gas in it is discharged rapidly.For the pretightening force of Regulation spring 9, be provided with adjusting screw 12 on the chamber wall of barrier film epicoele 14, make the pretightening force of spring 9 be adjusted to the best as required by the turnover of adjusting screw 12.
Claims (5)
1. the vacuum breaking device of vaccum stop valve in the liquid negative pressure transportation, comprise housing (4), it is characterized in that: on the madial wall of housing (4), set up elastic diaphragm (7), the internal cavities of housing (4) is divided into barrier film epicoele (14) and barrier film cavity of resorption (15), set up sealing seat (6) between the bottom surface of barrier film (7) and housing (4), sealing seat (6) is divided into barrier film cavity of resorption (15) and air guide cavity (3) to barrier film cavity of resorption (15), air guide cavity (3) has the gas port (2) that is communicated with atmosphere, air guide cavity (3) one sides at sealing seat (6) are provided with gas guide groove (5), this gas guide groove (5) is connected with the pipe joint (16) that links to each other with extraneous pipeline, on barrier film (7), be provided with drive link (8), this drive link (8) passes sealing seat (6) and is provided with the sealed cover (1) that can cover gas guide groove (5) port in its end, is provided with on barrier film epicoele (14) and the joining negative pressure interface of pipeline (13).
2. the vacuum breaking device of vaccum stop valve in the liquid negative pressure transportation according to claim 1 is characterized in that: have the gas port (2) that is communicated with atmosphere on the chamber wall of barrier film cavity of resorption (15).
3. the vacuum breaking device of vaccum stop valve in the liquid negative pressure transportation according to claim 1, it is characterized in that: the chamber wall of barrier film epicoele (14) is provided with adjusting screw (12), be provided with support slice (11) on this adjustment screw (12) termination in barrier film epicoele (14), be provided with spring (9) in the barrier film epicoele (14), these spring (9) one ends connect the upper surface of barrier film (7), and its other end is connected on the support slice (11).
4. the vacuum breaking device of vaccum stop valve in the liquid negative pressure transportation according to claim 3 is characterized in that: the outer buckle closure of going back of support slice (11) has the seal dissepiment (10) that adjusting screw (12) and barrier film epicoele (14) are isolated.
5. the vacuum breaking device of vaccum stop valve in the liquid negative pressure transportation according to claim 1 is characterized in that: gas guide groove (5) ringwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200352010U CN201013910Y (en) | 2007-03-02 | 2007-03-02 | Vacuum breakdown device of vacuum stop valve during liquid negative-pressure conveying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200352010U CN201013910Y (en) | 2007-03-02 | 2007-03-02 | Vacuum breakdown device of vacuum stop valve during liquid negative-pressure conveying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201013910Y true CN201013910Y (en) | 2008-01-30 |
Family
ID=39025704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200352010U Expired - Fee Related CN201013910Y (en) | 2007-03-02 | 2007-03-02 | Vacuum breakdown device of vacuum stop valve during liquid negative-pressure conveying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201013910Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206809A (en) * | 2010-03-30 | 2011-10-05 | 杭州海鲸光电科技有限公司 | High temperature vacuum baking furnace and operation method thereof |
| CN110410320A (en) * | 2018-04-27 | 2019-11-05 | 普发真空有限公司 | Antivoid valve |
-
2007
- 2007-03-02 CN CNU2007200352010U patent/CN201013910Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206809A (en) * | 2010-03-30 | 2011-10-05 | 杭州海鲸光电科技有限公司 | High temperature vacuum baking furnace and operation method thereof |
| CN110410320A (en) * | 2018-04-27 | 2019-11-05 | 普发真空有限公司 | Antivoid valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201013910Y (en) | Vacuum breakdown device of vacuum stop valve during liquid negative-pressure conveying | |
| KR101108077B1 (en) | pilot operated safety valve and operating method using the same | |
| CN102620025B (en) | For the double-action converting unit of valve positioner | |
| CN204024964U (en) | A kind of vertical reciprocating type vacuum pump | |
| CN211501659U (en) | Vacuum adsorption control valve and vacuum adsorption device | |
| CN201034193Y (en) | Vacuum stop valve employing diaphragm piston components | |
| CN104712781B (en) | Pneumatic vacuum gate valve | |
| CN202266695U (en) | Pneumatic diaphragm valve structure | |
| CN201973289U (en) | Two-position and five-way valve | |
| CN201310681Y (en) | Vacuum pneumatic baffle charging valve | |
| CN212643628U (en) | Double-valve-cover vacuum baffle valve | |
| CN102966770A (en) | Elastic rubber type check valve for multi-dust environment | |
| CN116557597A (en) | Pressure release ventilation assembly for combined positive and negative pressure installation | |
| CN214946395U (en) | Differential pressure fluid controller | |
| CN203023505U (en) | Vent valve pressure-possessed air intake and exhaust quantity magnifying structure | |
| CN215635095U (en) | Two-way pneumatic push-pull valve of miniature | |
| CN105972226B (en) | Quick two-way shut-off valve | |
| CN219809438U (en) | Diaphragm valve pilot type controller | |
| CN219452957U (en) | Mechanical diaphragm valve controller | |
| CN201610843U (en) | Improved inlet air control valve | |
| CN112815098A (en) | Differential pressure fluid controller | |
| CN110118263A (en) | A kind of New flat valve | |
| CN205423873U (en) | Pneumatic filling of bellows sealing reaches and adds medicine valve | |
| CN210890122U (en) | Electric valve with high safety performance | |
| CN217927271U (en) | Prevent leaking subassembly suitable for 65 mechanical valve output oil mouth |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080130 |