CN108426045A - Anti- siphon switch valve - Google Patents
Anti- siphon switch valve Download PDFInfo
- Publication number
- CN108426045A CN108426045A CN201810486519.3A CN201810486519A CN108426045A CN 108426045 A CN108426045 A CN 108426045A CN 201810486519 A CN201810486519 A CN 201810486519A CN 108426045 A CN108426045 A CN 108426045A
- Authority
- CN
- China
- Prior art keywords
- spool
- ring packing
- plug
- packing boss
- siphon
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/12—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side weight-loaded
Abstract
A kind of anti-siphon switch valve, it is typically mounted on pipeline, spool including valve body and in body cavity, valve body is equipped with inlet and outlet, wherein, it further include plug, plug is connected to body cavity top, plug bottom is equipped with guide post, guide post is integral with plug, the pilot hole being inserted into for guide post is equipped at the top of spool, spool periphery wall is equipped with ring packing boss, ring packing boss is integral with spool, body cavity is located at entrance and is equipped with the annular shoulder block to match with ring packing boss, ring packing boss is pressed on annular shoulder block, ring packing boss and body cavity slidable connection.Spool in the anti-siphon switch valve of the present invention is contacted with inlet side edge for face, this contact area is larger, therefore, when import pressure medium is lower suddenly, ring packing boss can be rapidly pressed under spool Gravitative Loads on annular shoulder block, therefore the anti-siphon performance of the anti-siphon switch valve of the present invention will be got well compared with the prior art.
Description
Technical field：
The present invention relates to a kind of valves on pipeline, are especially a kind of anti-siphon switch valve.
Background technology：
When inlet pressure is lower suddenly, to prevent the medium in exit to circumfluence, people are often used common unidirectional
Valve is used as anti-siphon switch valve, and conventional one-way valve generally comprises a valve body, the spool in body cavity and withstands on
The spring of spool one end, valve body are equipped with the inlet and outlet for being connect with pipeline, and the spool other end withstands on import edge,
When the pressure medium of entrance is higher, spool can overcome spring force to the direction far from import under the action of high-pressure medium
It is mobile, at this point, import is communicated with outlet, and when import pressure medium is lower suddenly, to prevent medium from flowing backwards, (i.e. anti-siphon is existing
As occur), spool can reset rapidly under the effect of spring force, and spool withstands on import edge again, by import with go out
It mouthful disconnects, however, since spool and the contact area on inlet side edge are very small, only annular line contact, therefore, above-mentioned check valve
Anti- siphon performance it is less desirable, it sometimes appear that micro medium flow backwards the phenomenon that.
Invention content：
The technical problem to be solved by the present invention is to provide a kind of anti-siphon switch valve of anti-siphon better performances.
Technical solution of the invention is to provide a kind of anti-siphon switch valve having following structure：Including valve body with
And the spool in body cavity, valve body are equipped with inlet and outlet, wherein further include plug, plug is connected in valve body
Chamber top, spool periphery wall are equipped with ring packing boss, and ring packing boss is integral with spool, body cavity positioned at into
The annular shoulder block to match with ring packing boss is equipped at mouthful, ring packing boss is pressed on annular shoulder block, and ring packing is convex
Platform and body cavity slidable connection.
Anti- siphon switch valve of the present invention, wherein plug bottom is equipped with guide post, and guide post is one whole with plug
Body, spool top are equipped with the pilot hole being inserted into for guide post.
Anti- siphon switch valve of the present invention, wherein be connected with dust-proof end cap at the top of plug.
After using the above structure, compared with prior art, the anti-siphon switch valve of the present invention has the following advantages：With existing skill
The spool of art check valve and the contact area on inlet side edge are very small, and only annular line contact is different, the anti-siphon switch of the present invention
The spool periphery wall of valve is equipped with ring packing boss, and body cavity is located at entrance and is equipped with the ring to match with ring packing boss
Shape shoulder block, and ring packing boss is pressed on annular shoulder block, in other words, the spool in the anti-siphon switch valve of the present invention and import
Edge contacts for face, this contact area is larger, and therefore, when import pressure medium is lower suddenly, ring packing boss can be in valve
It is pressed on rapidly on annular shoulder block under core Gravitative Loads, therefore the anti-siphon performance of the anti-siphon switch valve of the present invention is wanted compared with the prior art
It is good.
The setting of guide post and pilot hole can make spool more steady when sliding up and down.
Dust-proof end cap acts on：It can prevent extraneous dust from entering in body cavity.
Description of the drawings：
Fig. 1 is the main view schematic cross-sectional view of the anti-siphon switch valve of the present invention.
Specific implementation mode：
The anti-siphon switch valve of the present invention is described in further detail with reference to the accompanying drawings and detailed description：
As shown in Figure 1, in this embodiment, the anti-siphon switch valve of the present invention includes plug 2, valve body 7 and position
Spool 11 in 7 inner cavity of valve body, valve body 7 are equipped with import 8 and outlet 6, and plug 2 is threaded in 7 inner cavity top of valve body, block up
First 2 top is connected by screw there are one dust-proof end cap 3, and 2 bottom of plug is equipped with guide post 1, and guide post 1 is one whole with plug 2
Body, 11 top of spool are equipped with the pilot hole 4 being inserted into for guide post 1, and 11 periphery wall of spool is equipped with ring packing boss 10, annular
Seal boss 10 is integral with spool 11, and 10 top of ring packing boss is equipped with gasket 5, and 7 inner cavity of valve body is located at import 8
Equipped with the annular shoulder block 9 to match with ring packing boss 10, ring packing boss 10 is pressed on annular shoulder block 9, ring packing
Boss 10 can be slided up and down with 7 inner cavity of valve body and be connect.
The operation principle of the anti-siphon switch valve of the present invention is：As shown in Figure 1, import 8 and outlet 6 with external pipe for connecting
It connecing, when the pressure medium at import 8 is higher, spool 11 can be jacked up by high-pressure medium, and be moved to the direction far from import 8,
At this point, import 86 is communicated with outlet, and when the pressure medium at import 8 is lower suddenly, to prevent medium from flowing backwards (i.e. anti-siphon
Phenomenon occur), ring packing boss 10 can is pressed on rapidly on annular shoulder block 9 under 11 Gravitative Loads of spool, by import 8 with go out
Mouth 6 is to disconnection.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
It encloses and is defined, under the premise of not departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain of claims of the present invention determination.
Claims (3)
1. a kind of anti-siphon switch valve, including valve body (7) and the spool (11) in valve body (7) inner cavity, the valve body (7)
It is equipped with import (8) and outlet (6), it is characterised in that：Further include plug (2), the plug (2) is connected to valve body (7) inner cavity
Top, spool (11) periphery wall are equipped with ring packing boss (10), the ring packing boss (10) and spool (11)
It being integral, valve body (7) inner cavity is located at the annular shoulder block (9) for being equipped at import (8) and matching with ring packing boss (10),
The ring packing boss (10) is pressed on annular shoulder block (9), and the ring packing boss (10) can slide with valve body (7) inner cavity
Dynamic connection.
2. anti-siphon switch valve according to claim 1, it is characterised in that：Plug (2) bottom is equipped with guide post
(1), the guide post (1) is integral with plug (2), and the guiding being inserted into for guide post (1) is equipped at the top of the spool (11)
Hole (4).
3. anti-siphon switch valve according to claim 2, it is characterised in that：It is connected with dust-proof end at the top of the plug (2)
It covers (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810486519.3A CN108426045A (en) | 2018-05-16 | 2018-05-16 | Anti- siphon switch valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810486519.3A CN108426045A (en) | 2018-05-16 | 2018-05-16 | Anti- siphon switch valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108426045A true CN108426045A (en) | 2018-08-21 |
Family
ID=63163551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810486519.3A Withdrawn CN108426045A (en) | 2018-05-16 | 2018-05-16 | Anti- siphon switch valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108426045A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595424A (en) * | 2019-01-29 | 2019-04-09 | 华能国际电力股份有限公司玉环电厂 | A kind of plug |
-
2018
- 2018-05-16 CN CN201810486519.3A patent/CN108426045A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595424A (en) * | 2019-01-29 | 2019-04-09 | 华能国际电力股份有限公司玉环电厂 | A kind of plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180821 |