CN2469281Y - Slow opening quick closing check valve - Google Patents
Slow opening quick closing check valve Download PDFInfo
- Publication number
- CN2469281Y CN2469281Y CN 01212738 CN01212738U CN2469281Y CN 2469281 Y CN2469281 Y CN 2469281Y CN 01212738 CN01212738 CN 01212738 CN 01212738 U CN01212738 U CN 01212738U CN 2469281 Y CN2469281 Y CN 2469281Y
- Authority
- CN
- China
- Prior art keywords
- valve
- water
- bonnet
- check valve
- bottom flange
- 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
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- Check Valves (AREA)
- Details Of Valves (AREA)
Abstract
The utility model discloses a slow opening and fast closing type check valve, including a valve seat at the valve body, an upper valve cover and a lower valve cover connected with the valve body. A diaphragm cavity is arranged between the upper valve cover and the lower valve cover, and the diaphragm cavity is provided with a diaphragm, which is connected with a center shaft, and the other end of the center shaft is connected with a valve door. The valve door is contacted with the valve seat. A water vessel is communicated with a water inlet and outlet control hole of the upper valve cover, and the water vessel and the water outlet of the upper valve cover are in throttle communication. The water vessel and the water inlet of upper valve cover are in single direction communcation. The valve can be opened slowly to prevent the current impact and pressure impact in the pipe, and can be closed slowly to prevent the generation of water hammer. The valve door has no requirement of the water quality, and can be used in the clean water or the raw water system.
Description
The utility model belongs to safety check, is specifically related to a kind of slow closed type check valve that changes up.
Present disclosed quick-closure check valve 99231596 has two valve bodies up and down, exists and produces the problem of moulding at twice, and can not realize slow unlatching.
The purpose of this utility model is to provide a kind of delaying to change up closed type check valve to address the above problem.
In order to realize the purpose of this utility model, the inventor proposes following technological scheme: it comprises valve body, establish valve seat in the valve body, the valve gap that is connected with valve body, valve gap is connected and composed by bonnet and bottom flange, it between bonnet and the bottom flange diaphragm cavity, establish barrier film in the diaphragm cavity, barrier film is connected with the central shaft that passes bottom flange, and the central shaft the other end connects valve, valve contacts with valve seat, establishes spring between valve and the bottom flange.It also comprises water container, and bonnet is offered into water, water outlet control hole, and water container is communicated with bonnet water inlet, water outlet control hole, and water container is that throttling is communicated with the bonnet water outlet, and water container and bonnet water inlet are unilaterally connected.
This valve is used for pump outlet, and it is slowly opened, and prevents compression shock in rush of current and the pipe network; Quick closedown prevents that water hammer from producing.No water quality requirement can be used for sewage, clear water and former water system.
The slow closed type check valve configuration diagram that changes up of accompanying drawing
Embodiment:
As shown in drawings, into water, water outlet 7,8 are arranged on the valve body 1.Establish valve seat 2 in the valve body 1.Valve gap 3 is connected with valve body 1, and valve gap 3 is connected and composed by bonnet 3-1 and bottom flange 3-2, is diaphragm cavity 4 between bonnet 3-1 and the bottom flange 3-2, establishes barrier film 5 in the diaphragm cavity 4, establishes spring 15 between bonnet 3-1 and the barrier film 5.Following between the perforate 20 on the bottom flange 3-2 wall, bottom flange 3-2 and barrier film 5 communicates with atmosphere every die cavity 4-2.Barrier film 5 is connected with the central shaft 6 that passes bottom flange 3-2, and central shaft 6 the other ends connect valve 9, and valve 9 contacts with valve seat 2.Establish spring 13 between valve 9 and the bottom flange 3-2.Water container 10, bonnet 3-1 are offered into water, water outlet control hole 11,12, and water container 10 is communicated with bonnet 3-1 water inlet, water outlet control hole 11,12.Establish throttle valve 16 between water container 10 and the bonnet 3-1 water outlet 12.Establish one-way valve 17 between water container 10 and the bonnet 3-1 water intake 11.
This valve working procedure is:
Slow unlatching when water pump is opened: when water pump was opened, the water of valve water intake upwards pushed away valve and opens, and was that barrier film is upwards discharged the water of going up every die cavity by axle.The water of going up every die cavity enters water container by throttle valve.Go up the opening time that is valve every the water emptying time of die cavity.
The quick closedown that water pump stops: when water pump cut out, along with the flow velocity of water reduces, under the effect of spring 13, valve was closed gradually; When water velocity was zero, valve cut out fully.Under the effect of spring 15, barrier film moves downward, and the water in the water container is full of every die cavity through one-way valve.
Claims (5)
1, a kind of slow closed type check valve that changes up, it comprises valve body, establish valve seat in the valve body, the valve gap that is connected with valve body, valve gap is connected and composed by bonnet and bottom flange, be diaphragm cavity between bonnet and the bottom flange, establish barrier film in the diaphragm cavity, barrier film is connected with the central shaft that passes bottom flange, the central shaft the other end connects valve, valve contacts with valve seat, establishes spring between valve and the bottom flange, it is characterized in that it also comprises water container, bonnet is offered into water, the water outlet control hole, water container and bonnet water inlet, the water outlet control hole is communicated with, and water container is that throttling is communicated with the bonnet water outlet, and water container and bonnet water inlet are unilaterally connected.
2, slowly according to claim 1 change up closed type check valve, it is characterized in that establishing throttle valve between water container and the bonnet water outlet.
3, slowly according to claim 1 change up closed type check valve, it is characterized in that water container and bonnet establish one-way valve between intaking.
4, slowly according to claim 1 change up closed type check valve, it is characterized in that establishing spring between bonnet and the barrier film.
5, slowly according to claim 1 change up closed type check valve, it is characterized in that following between bottom flange and the barrier film communicates with atmosphere every die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01212738 CN2469281Y (en) | 2001-03-12 | 2001-03-12 | Slow opening quick closing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01212738 CN2469281Y (en) | 2001-03-12 | 2001-03-12 | Slow opening quick closing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2469281Y true CN2469281Y (en) | 2002-01-02 |
Family
ID=33631857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01212738 Expired - Fee Related CN2469281Y (en) | 2001-03-12 | 2001-03-12 | Slow opening quick closing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2469281Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300498C (en) * | 2003-05-20 | 2007-02-14 | 辽阳高新给水设备有限公司 | Slow-opening and fast-closing energy-saving non-return valve |
-
2001
- 2001-03-12 CN CN 01212738 patent/CN2469281Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300498C (en) * | 2003-05-20 | 2007-02-14 | 辽阳高新给水设备有限公司 | Slow-opening and fast-closing energy-saving non-return valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |