CN203131130U - Check valve - Google Patents
Check valve Download PDFInfo
- Publication number
- CN203131130U CN203131130U CN 201320136880 CN201320136880U CN203131130U CN 203131130 U CN203131130 U CN 203131130U CN 201320136880 CN201320136880 CN 201320136880 CN 201320136880 U CN201320136880 U CN 201320136880U CN 203131130 U CN203131130 U CN 203131130U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- flap
- safety check
- guide rod
- 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)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The utility model discloses a check valve, relates to the technical field of valves, and aims to realize one-way circulation control of a fluid. The check valve comprises a valve body with an inside hollow cavity, wherein a valve clack with a sealing ring, a guide rod, a spring and a valve bonnet are arranged in the valve body; and a water inlet, a water outlet, a check valve seat, testing water nozzle installation holes and testing water nozzles are arranged on the valve body. The check valve is characterized in that the water inlet and the water outlet are separated by the valve clack, so that the one-way circulation of the fluid can be controlled; the valve body is tapered, so that pressure loss during opening can be reduced; and the testing water nozzles are mounted on the valve body, and a pressure gauge or a differential pressure gauge can be mounted through the testing water nozzles, so that the pressure loss caused when the valve is opened can be detected, or whether the check valve fails or not can be judged.
Description
Technical field
The utility model relates to valve technology field, relates in particular to a kind of safety check that can prevent the fluid refluence in the valve.
Background technique
In existing engineering, there are many occasions will use valve, especially in chemical industry, hydraulic engineering, need valve as the mobile keying original paper of fluid.Need in some engineering to guarantee that fluid flows along fixing direction, prevent that fluid from flowing backwards, the technician has designed the safety check of unidirectional conducting for this reason, and fluid flows along the direction of prior design, if reverse fluid flow then can cause closure of check ring, thereby realize one-directional fluid flow.
The model utility content
The utility model embodiment provides a kind of safety check, can control the one-way flow of fluid, prevents that fluid from flowing backwards, and can reduce the pressure loss when opening, the non-return valve that can also whether lose efficacy and judge valve by pressure gauge.
The technical solution adopted in the utility model is: a kind of safety check, comprise that an inside is the valve body of cavity, and be provided with the flap, guide rod, spring, the valve gap that have seal ring in the valve body; Valve body is provided with water intake, water outlet, check valve receptacle, test water nozzle mounting hole, and the test water nozzle is installed; It is characterized in that: cut off by flap between water intake and the water outlet.
As improvement, described valve gap is threaded and is fixed on the valve body, and described guide rod is threaded and is fixed on the valve gap.
As improvement, have tubular pilot hole on the described flap, cooperate with guide rod, make flap under the effect of guide structure, move along guide rod; Described flap is provided with annular groove, places seal ring at groove; Described flap design is tapered, can reduce fluid by the time the pressure loss.
As improvement, between described flap and guide rod, be provided with spring, under the effect of spring force, the seal ring on the flap closely contacts with check valve receptacle on the valve body, makes safety check be in closed condition fully.
As improvement, in the both sides of described valve body upper check valve valve seat, be provided with two test water nozzle mounting holes, and the test water nozzle is installed accordingly, can setting pressure table or differential pressure indicator by the test water nozzle, the pressure loss in the time of can detecting valve open, or judge whether safety check lost efficacy.
As improvement, described valve body inlet and outlet connectors is all with being threaded.
Compared with prior art, advantage of the present utility model is: can slide relatively between described flap and the guide rod, when outlet pressure during greater than inlet pressure, under the effect of pressure reduction and spring force, seal ring on the flap contacts with valve seat fast, and valve closing has effectively prevented backflow; When upstream pressure during greater than downstream pressure, the seal ring on the flap and valve seat break away from, and valve is normally opened, the fluid proper flow; The test water nozzle is installed on the valve body, can setting pressure table or differential pressure indicator by the test water nozzle, the pressure loss in the time of can detecting valve open, or judge whether safety check lost efficacy.
Description of drawings
Fig. 1 is the structure sectional view of valve closing state of the present utility model.
Fig. 2 is the structural representation of valve opening state of the present utility model.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Safety check as described in as figure being comprises the valve body 1 that an inside is cavity, is provided with the flap 6, guide rod 3, spring 4, the valve gap 2 that have seal ring 5 in the valve body 1; Valve body 1 is provided with water intake 11, water outlet 12, check valve receptacle 13, test water nozzle mounting hole 14, and test water nozzle 7 is installed; It is characterized in that: cut off by flap 6 between water intake 11 and the water outlet 12.
Described valve gap 2 is threaded and is fixed on the valve body 1, and described guide rod 3 is threaded and is fixed on the valve gap 2.
Have tubular pilot hole 61 on the described flap 6, cooperate with guide rod 3, make flap 6 under the effect of guide structure, move along guide rod 3; Described flap 6 is provided with annular groove 62, places seal ring 5 at groove 62; Described flap 6 is designed to taper, can reduce fluid by the time the pressure loss.
Be provided with spring 4 between described flap 6 and guide rod 3, under the effect of spring force, the seal ring 5 on the flap 6 closely contacts with check valve receptacle 13 on the valve body, makes safety check be in closed condition fully.
Both sides at described valve body 1 upper check valve valve seat 13, be provided with two test water nozzle mounting holes 14, and test water nozzle 7 is installed accordingly, can setting pressure table or differential pressure indicator by test water nozzle 7, the pressure loss in the time of can detecting valve open, or judge whether safety check lost efficacy.
Described valve body 1 inlet and outlet connectors is all with being threaded.
Working principle of the present utility model is further described: under normal circumstances, when upstream pressure during greater than downstream pressure, the seal ring 5 on the flap 6 breaks away from valve seat 13, and valve is normally opened, the fluid proper flow; When outlet pressure during greater than inlet pressure, under the effect of pressure reduction and spring force, the seal ring 5 on the flap 6 contacts with valve seat 13 fast, and valve closing has effectively prevented backflow; Test water nozzle 7 is installed on the valve body 1, can setting pressure table or differential pressure indicator by test water nozzle 7, the pressure loss in the time of can detecting valve open, or judge whether safety check lost efficacy.
Claims (6)
1. a safety check comprises that an inside is the valve body of cavity, is provided with the flap, guide rod, spring, the valve gap that have seal ring in the valve body; Valve body is provided with water intake, water outlet, check valve receptacle, test water nozzle mounting hole, and the test water nozzle is installed; It is characterized in that: cut off by flap between water intake and the water outlet.
2. safety check according to claim 1, it is characterized in that: described valve gap is threaded and is fixed on the valve body, and described guide rod is threaded and is fixed on the valve gap.
3. safety check according to claim 1 is characterized in that: have tubular pilot hole on the described flap, cooperate with guide rod, make flap move along guide rod under the effect of guide structure; Described flap is provided with annular groove, places seal ring at groove; Described flap design is tapered, can reduce fluid by the time the pressure loss.
4. safety check according to claim 1, it is characterized in that: between described flap and guide rod, be provided with spring, under the effect of spring force, the seal ring on the flap closely contacts with check valve receptacle on the valve body, makes safety check be in closed condition fully.
5. safety check according to claim 1, it is characterized in that: in the both sides of described valve body upper check valve valve seat, be provided with two test water nozzle mounting holes, and the test water nozzle is installed accordingly, can setting pressure table or differential pressure indicator by the test water nozzle, the pressure loss in the time of can detecting valve open, or judge whether safety check lost efficacy.
6. safety check according to claim 1, it is characterized in that: described valve body inlet and outlet connectors is all with being threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320136880 CN203131130U (en) | 2013-03-25 | 2013-03-25 | Check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320136880 CN203131130U (en) | 2013-03-25 | 2013-03-25 | Check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203131130U true CN203131130U (en) | 2013-08-14 |
Family
ID=48939110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320136880 Expired - Fee Related CN203131130U (en) | 2013-03-25 | 2013-03-25 | Check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203131130U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806794A (en) * | 2015-04-17 | 2015-07-29 | 柳州市乾阳机电设备有限公司 | Check valve |
| CN105257870A (en) * | 2015-11-27 | 2016-01-20 | 江苏华太电力仪表有限公司 | Straight-through type high-sealing check valve |
| CN108916430A (en) * | 2018-08-27 | 2018-11-30 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of non-return valve |
-
2013
- 2013-03-25 CN CN 201320136880 patent/CN203131130U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806794A (en) * | 2015-04-17 | 2015-07-29 | 柳州市乾阳机电设备有限公司 | Check valve |
| CN105257870A (en) * | 2015-11-27 | 2016-01-20 | 江苏华太电力仪表有限公司 | Straight-through type high-sealing check valve |
| CN105257870B (en) * | 2015-11-27 | 2018-04-20 | 江苏华太电力仪表有限公司 | A kind of through type high leakproofness check-valves |
| CN108916430A (en) * | 2018-08-27 | 2018-11-30 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of non-return valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20180325 |