CN205896291U - Swing check valve - Google Patents
Swing check valve Download PDFInfo
- Publication number
- CN205896291U CN205896291U CN201620754191.5U CN201620754191U CN205896291U CN 205896291 U CN205896291 U CN 205896291U CN 201620754191 U CN201620754191 U CN 201620754191U CN 205896291 U CN205896291 U CN 205896291U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- changeable colour
- valve gap
- gap
- 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)
- Lift Valve (AREA)
Abstract
The utility model provides a swing check valve, including valve body, valve gap and valve clack, the valve gap pass through the bolt with the valve body is connected, is equipped with the bulge loop integrative with the valve body in the valve body, and the bulge loop passes through support and pin junction, installs the screw on the bulge loop, the lower extreme and the leg joint of screw, the round pin fixed with the valve body on to be connected with the valve clack through rocking arm, nut, be equipped with the changeable colour thing between valve gap and valve body, the changeable colour thing extends to the valve gap is outside, the valve gap is equipped with the translucent cover outward, the translucent cover cover is in valve gap, valve body junction and changeable colour beyond the region of objective existence. The beneficial effects of the utility model are that: use the changeable colour thing between valve gap and valve body to cover valve gap, valve body junction and changeable colour thing with the translucent cover, the changeable colour thing meets the medium and can discolour, and the changeable colour thing is according to the medium of pipeline transportation and decide, and when the seepage appeared in the stop valve, relevant personnel accessible time discover, handled, avoided the polluted medium environment.
Description
Technical field
This utility model belongs to pipe control apparatus field, more particularly, to a kind of swing check valve.
Background technology
A kind of strength by media flow of swing check valve automatically controls being turned on and off of flap, is used for preventing pipeline
There is the valve flowing backwards in medium.When the medium forward flow in pipeline, the flap of check-valves in the presence of medium power from
Dynamic unlatching, when the medium reverse flow in pipeline, flap is automatically switched off in the presence of medium power.Common swing type non-return
The Opening pressure of valve flap is constant, when the pressure of the medium of forward flow reaches certain value, just can open flap.Work as swing type
When check-valves are used in the little pipeline of positive pressure medium, flap can be in the intermediate state fully opening and closing, for a long time so,
The service life of swing check valve can be affected, after employing a period of time, seepage easily in valve gap and valve body junction
Situation.For the pipeline of transport acidic or alkaline medium, even a little seepage also easily causes larger pollution to environment,
And slight seepage is difficult to observe.
Content of the invention
In order to solve above-mentioned technical problem, this utility model provides a kind of swing check valve, including valve body, valve gap and valve
Lobe, described valve gap is connected with described valve body by bolt, is provided with the bulge loop with valve body in valve body, and bulge loop passes through support and pin
Connect, bulge loop be provided with screw, the lower end of screw is connected with support, pin is fixing and valve body on, and pass through rocking arm, nut and valve
Lobe connects it is characterised in that being provided with changeable colour thing between described valve gap and valve body, and described changeable colour thing extends to outside described valve gap
Portion, described valve gap is externally provided with translucent cover, and described translucent cover covers on described valve gap, valve body junction and changeable colour beyond the region of objective existence.
It is provided with a circle groove, described translucent cover upper and lower ends are connected in described recessed respectively outside described valve body, valve gap
In groove
Described changeable colour thing is ph reagent paper.
The beneficial effects of the utility model are: using changeable colour thing between valve gap and valve body, and cover valve gap, valve with translucent cover
Body junction and changeable colour thing, changeable colour thing run into medium can variable color, depending on the medium that changeable colour thing transport according to pipeline, section
When only seepage in valve, related personnel can find in time, process, it is to avoid medium pollution environment.
Brief description
Fig. 1 is structural representation of the present utility model.
Specific embodiment
Below with reference to accompanying drawings this utility model is described in more detail, which show of the present utility model preferred
Embodiment is it should be appreciated that those skilled in the art can change this utility model described here and still realize this utility model
Advantageous effects.Therefore, description below be appreciated that widely known for those skilled in the art, and be not intended as right
Restriction of the present utility model.
In figure, 1, valve body；2nd, valve gap；3rd, rocking arm；4th, flap；5th, changeable colour thing；6th, translucent cover.
As shown in figure 1, described valve gap 2 is connected with described valve body 1 by bolt, it is provided with convex with valve body 1 one in valve body 1
Ring, bulge loop passes through support and pin connection, bulge loop is provided with screw, the lower end of screw is connected with support, and pin is fixed and valve body 1
On, and be connected with flap 4 by rocking arm 3, nut, it is provided with changeable colour thing 5, described changeable colour thing 5 between described valve gap 2 and valve body 1
Extend to outside described valve gap 2, described valve gap 2 is externally provided with translucent cover 6, described translucent cover 6 covers on that described valve 2 covers, valve body 1 connects
Place and changeable colour beyond the region of objective existence 5.It is provided with a circle groove, described translucent cover 6 upper and lower ends are blocked respectively outside described valve body 1, valve gap 2
It is connected in described groove.If pipeline transportation medium is acidity or akaline liquid, changeable colour thing 9 can adopt ph reagent paper.
It has been described in detail to of the present utility model above by embodiment, but described content is only of the present utility model
Preferred embodiment is it is impossible to be considered for limiting practical range of the present utility model.All made according to this utility model application range
Impartial change and improvement etc., all should still belong within patent covering scope of the present utility model.
Claims (3)
1. a kind of swing check valve, including valve body, valve gap and flap, described valve gap is connected with described valve body by bolt, valve
Be provided with the bulge loop with valve body in vivo, bulge loop passes through support and pin connection, and bulge loop is provided with screw, the lower end of screw with
Frame connects, and in pin fixation and valve body, and is connected with flap it is characterised in that setting between described valve gap and valve body by rocking arm, nut
There is changeable colour thing, described changeable colour thing extends to outside described valve gap, and described valve gap is externally provided with translucent cover, and described translucent cover covers on
Described valve gap, valve body junction and changeable colour beyond the region of objective existence.
2. as claimed in claim 1 a kind of swing check valve it is characterised in that being provided with outside described valve body, valve gap
One circle groove, described translucent cover upper and lower ends are connected in described groove respectively.
3. as claimed in claim 1 a kind of swing check valve it is characterised in that described changeable colour thing be ph reagent paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620754191.5U CN205896291U (en) | 2016-07-18 | 2016-07-18 | Swing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620754191.5U CN205896291U (en) | 2016-07-18 | 2016-07-18 | Swing check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205896291U true CN205896291U (en) | 2017-01-18 |
Family
ID=57773845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620754191.5U Expired - Fee Related CN205896291U (en) | 2016-07-18 | 2016-07-18 | Swing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205896291U (en) |
-
2016
- 2016-07-18 CN CN201620754191.5U patent/CN205896291U/en not_active Expired - Fee Related
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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: 20170118 Termination date: 20190718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |