CN201090452Y - Novel auto exhaustion type backpressure valve for self-sucking pump - Google Patents
Novel auto exhaustion type backpressure valve for self-sucking pump Download PDFInfo
- Publication number
- CN201090452Y CN201090452Y CNU2007200736576U CN200720073657U CN201090452Y CN 201090452 Y CN201090452 Y CN 201090452Y CN U2007200736576 U CNU2007200736576 U CN U2007200736576U CN 200720073657 U CN200720073657 U CN 200720073657U CN 201090452 Y CN201090452 Y CN 201090452Y
- Authority
- CN
- China
- Prior art keywords
- valve
- self
- pump
- core plate
- valve core
- 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
- 239000004809 Teflon Substances 0.000 claims description 6
- 229920006362 Teflon® Polymers 0.000 claims description 6
- 210000000476 body water Anatomy 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a novel automatic-exhaust check valve for a self-priming pump, comprising a valve body, a valve plug plate, a valve spindle and a valve opening. The utility model is characterized in that a vent hole is perforated through the valve plug plate; a flexible gasket is arranged on the valve plug plate at the outlet of the valve body, clinging to the vent hole of the valve plug plate; the flexible gasket which is fixed by a bolt is made from polyfluortetraethylene. The utility model has the advantage that a large quantity of air in the pump can be exhausted when the pump is started.
Description
Technical field
The utility model relates to the safety check on a kind of self-priming pump, particularly a kind of novel automatic exhaust formula self-priming pump safety check.
Background technique
Safety check is mainly used on the delivery side of pump pipeline harm that the water hammer that produces when preventing termination of pumping produces pump; mainly form by valve body and valve core plate; valve core plate can be in pipeline the unidirectional unlatching of direction of liquid stream; valve core plate is just closed automatically when water flow pressure is reduced to a certain degree; liquid stream can not refunded; just can not impact the pump inner body yet, reach the purpose of protection pump.But because self-priming pump is installed in the delivery side of pump pipeline with safety check, in pump startup initial stage pump, there is a large amount of air to need to discharge, when the valve core plate of safety check do not have pressurised fluid stream by the time can not open automatically, so air just can not be discharged along pipeline in the pump, can only accumulate in the pump, the self-priming performance of pump is produced very adverse influence.
Summary of the invention
The purpose of this utility model be solve self-priming pump with safety check in the pump startup initial stage problem of exhaust smoothly.A kind of novel automatic exhaust formula self-priming pump safety check is provided.The utility model design novel automatic exhaust formula self-priming pump safety check, comprise valve body, valve core plate, valve shaft, valve opening, it is characterized in that: the exhaust port that on valve core plate, has perforation, having flexible gasket to be close on the exhaust port of valve core plate on the valve core plate of valve body water outlet one side, flexible gasket is by a screw.Flexible gasket is a teflon.The utility model advantage is to be a large amount of air in the pump can be discharged at pump startup.
Description of drawings:
Accompanying drawing is a structural representation of the present utility model,
Below in conjunction with enforcement and accompanying drawing the utility model is elaborated,
Embodiment:
Comprise valve body 1 among the figure, valve core plate 2, valve shaft 3, valve opening 4 is characterized in that: the exhaust port 5 that has perforation on valve core plate 2, have flexible gasket 6 to be close on the exhaust port 5 of valve core plate 2 on the valve core plate 2 of valve body 1 water outlet one side, flexible gasket 6 is fixing by a screw 7.Flexible gasket 6 is a teflon.
Because self-priming pump is installed in the delivery side of pump pipeline with safety check, when starting, in pump, there is a large amount of air to need to discharge, the valve core plate 2 of safety check do not have pressurised fluid stream by the time be can not open automatically, it is in following closed condition, and when air, the flexible gasket of making because of teflon 6 is softer relatively lighter, air backs down the flexible gasket 6 that teflon is made, discharge in exhaust port 5, when liquid stream flow through, whole valve core plate 2 was upwards backed down same normal the use.When liquid flows the pressure that flows backwards, valve core plate 2 works equally and closes safety check downwards, and the flexible gasket 6 that the teflon on the exhaust port 5 is made can bear certain pressure, can not cause a large amount of backflows of liquid stream, at most only can produce a small amount of liquid stream from exhaust port 5 interior backflow leakage, can not produce any influence, satisfy usage requirement fully pump.
Claims (3)
1. novel automatic exhaust formula self-priming pump safety check comprises valve body, valve core plate, valve shaft, valve opening, it is characterized in that: have the exhaust port of perforation on valve core plate, having flexible gasket to be close on the exhaust port of valve core plate on the valve core plate of valve body water outlet one side, flexible gasket is by a screw.
2. by the described novel automatic exhaust formula of claim 1 self-priming pump safety check, it is characterized in that: the exhaust port diameter on the valve core plate is 6～8mm, the thickness 2mm of flexible gasket.
3. by the described novel automatic exhaust formula of claim 1 self-priming pump safety check, it is characterized in that: flexible gasket is a teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200736576U CN201090452Y (en) | 2007-08-15 | 2007-08-15 | Novel auto exhaustion type backpressure valve for self-sucking pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200736576U CN201090452Y (en) | 2007-08-15 | 2007-08-15 | Novel auto exhaustion type backpressure valve for self-sucking pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090452Y true CN201090452Y (en) | 2008-07-23 |
Family
ID=39862213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200736576U Expired - Fee Related CN201090452Y (en) | 2007-08-15 | 2007-08-15 | Novel auto exhaustion type backpressure valve for self-sucking pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090452Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318049A (en) * | 2014-07-30 | 2016-02-10 | 上海连成（集团）有限公司 | Self-exhaust type check valve of vertical automatic control self-priming pump |
| CN108678996A (en) * | 2018-07-06 | 2018-10-19 | 石家庄远见水泵制造有限公司 | A kind of anti-backflow device of submersible pump |
-
2007
- 2007-08-15 CN CNU2007200736576U patent/CN201090452Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318049A (en) * | 2014-07-30 | 2016-02-10 | 上海连成（集团）有限公司 | Self-exhaust type check valve of vertical automatic control self-priming pump |
| CN108678996A (en) * | 2018-07-06 | 2018-10-19 | 石家庄远见水泵制造有限公司 | A kind of anti-backflow device of submersible pump |
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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: 20080723 Termination date: 20150815 |
|
| EXPY | Termination of patent right or utility model |