CN212616535U - Anti-reflux check valve - Google Patents
Anti-reflux check valve Download PDFInfo
- Publication number
- CN212616535U CN212616535U CN202021420576.0U CN202021420576U CN212616535U CN 212616535 U CN212616535 U CN 212616535U CN 202021420576 U CN202021420576 U CN 202021420576U CN 212616535 U CN212616535 U CN 212616535U
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- China
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- valve
- arm
- valve body
- seat
- rotating shaft
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- Expired - Fee Related
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Abstract
The utility model relates to an anti-reflux check valve, which comprises a valve body and a valve cover, wherein the valve cover is arranged at the top of the valve body, a channel is arranged inside the valve body and the valve cover, a support rod is arranged on the inner arm at one side of the top of the channel, a connecting lug is arranged below the middle part of the support rod, the inner side of the bottom end of the connecting lug is rotatably arranged with the top end of a rotating arm, a fixed seat is arranged at the bottom end of the rotating arm, one side of the fixed seat is connected with a connecting seat; when intaking in the twinkling of an eye through the end of intaking, the impact force that water produced acts on the valve plug, and then drives the rocking arm and rotate rapidly, and the rocking arm at first contacts with buffer gear, and when the gyro wheel was rolling along the rocking arm, the rocking arm shifts up along the guide arm in the sleeve through the slide bar that the wheel seat is connected, compresses the spring, plays the cushioning effect through the elastic deformation of spring, avoids fixing base and valve body inner wall to bump, protects valve body inside.
Description
Technical Field
The utility model relates to the technical field of valves, especially, relate to a prevent check valve against current.
Background
The check valve is a valve whose opening and closing part is a circular valve clack and acts by its own weight and medium pressure to block the medium from flowing backwards, and belongs to the automatic valve class, also called check valve, one-way valve, backflow valve or isolating valve.
When the existing anti-backflow check valve is used, when water is instantly fed through a water inlet end, impact force generated by the water acts on the valve plug, so that the rotating arm is driven to rapidly rotate, the fixed seat collides with the inner wall of the valve body, and internal parts are damaged; simultaneously when the condition that the backward flow appears in the play water end, rivers act on the fixing base, cause the bounce-back of valve plug, and then the short time of appearing valve plug and valve body is opened, and then the situation against the current appears.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem to solve is to provide an anti-reflux check valve, solved the current anti-reflux check valve in the in-process of using, when intaking in the twinkling of an eye through the end of intaking, the impact force that water produced acts on the valve plug, and then drives the rocking arm and rotate rapidly, causes fixing base and valve body inner wall to bump, and then causes the damage to inside spare part; simultaneously when the condition that the backward flow appears in the play water end, rivers act on the fixing base, cause the bounce-back of valve plug, and then the short time of appearing valve plug and valve body is opened, and then the technical problem of the situation of appearing flowing against the current.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the backflow prevention check valve comprises a valve body and a valve cover, wherein the valve cover is installed at the top of the valve body, and a channel is formed inside the valve body and the valve cover;
a support rod is mounted on the inner arm on one side of the top of the channel, a connecting lug is mounted below the middle of the support rod, the inner side of the bottom end of the connecting lug is rotatably mounted with the top end of the rotating arm, a fixed seat is mounted at the bottom end of the rotating arm, one side of the fixed seat is connected with a connecting seat through a bolt, and a valve plug is mounted on one side of the connecting seat;
buffer gear is installed to bracing piece one end below, buffer gear includes sleeve, guide arm, spring, slide bar, wheel seat and gyro wheel, the sleeve top is connected with bracing piece one end, the guide arm is installed to the inside top arm of sleeve, the spring is installed in the guide arm outside, the guide arm outside just is located spring below slidable mounting has the slide bar, the slide bar bottom is located the sleeve below and installs the wheel seat, the gyro wheel is installed to wheel seat inboard.
Preferably, a sealing gasket is arranged at the joint of the valve body and the valve cover, and the valve body and the valve cover are connected through a flange.
Preferably, the top side of the sliding rod is provided with a guide hole, and the sliding rod is slidably mounted on the outer side of the guide rod through the guide hole.
Preferably, the valve body outside is provided with spacing post, engaging lug and rocking arm rotate through the pivot and connect, spacing post is run through to pivot one end, and the pivot rotates with spacing post to be connected.
Preferably, the outer side of one end of the rotating shaft is provided with threads, the outer side of one end of the rotating shaft is provided with a nut, and the rotating shaft is rotatably installed with the limiting column through a sealing bearing.
The utility model has the advantages that: in the process of anti-reflux, the fixed seat and the connecting seat connected with the rotating arm drive the valve plug to be closed with the channel, at the moment, the rotating nut rotates on the outer side of the rotating shaft until the nut is contacted with the limiting column, so that the rotating shaft is fixed, and the situation that the valve plug is opened in a short time and then the reflux occurs due to the rebound of the valve plug is avoided;
when intaking in the twinkling of an eye through the end of intaking, the impact force that water produced acts on the valve plug, and then drives the rocking arm and rotate rapidly, and the rocking arm at first contacts with buffer gear, and when the gyro wheel was rolling along the rocking arm, the rocking arm shifts up along the guide arm in the sleeve through the slide bar that the wheel seat is connected, compresses the spring, plays the cushioning effect through the elastic deformation of spring, avoids fixing base and valve body inner wall to bump, protects valve body inside.
Drawings
FIG. 1 is an overall sectional view of the present invention;
FIG. 2 is a schematic view of the buffering mechanism of the present invention;
fig. 3 is a cross-sectional view of the spacing column of the present invention.
Illustration of the drawings:
1. a valve body; 2. a valve cover; 3. a gasket; 4. a channel; 5. a support bar; 6. connecting lugs; 7. a buffer mechanism; 8. a rotating shaft; 9. a valve plug; 10. a fixed seat; 11. a rotating arm; 12. a connecting seat; 13. a sleeve; 14. a guide bar; 15. a spring; 16. a slide bar; 17. a guide hole; 18. a wheel seat; 19. a roller; 20. sealing the bearing; 21. a limiting column; 22. and a nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Specific examples are given below.
Referring to fig. 1 to 3, the backflow prevention check valve comprises a valve body 1 and a valve cover 2, wherein the valve cover 2 is installed at the top of the valve body 1, and a channel 4 is arranged inside the valve body 1 and the valve cover 2;
a supporting rod 5 is installed on the inner arm on one side of the top of the channel 4, a connecting lug 6 is installed below the middle of the supporting rod 5, the inner side of the bottom end of the connecting lug 6 is rotatably installed with the top end of a rotating arm 11, a fixed seat 10 is installed at the bottom end of the rotating arm 11, one side of the fixed seat 10 is connected with a connecting seat 12 through a bolt, and a valve plug 9 is installed on one side of the connecting;
As an embodiment of the utility model, sealed pad 3 is installed to valve body 1 and valve gap 2 junction, plays seal installation's effect, and valve body 1 and valve gap 2 pass through flange joint, realize the detachable connection of valve body 1 and valve gap 2.
As an embodiment of the present invention, a guide hole 17 is opened on the top side of the sliding rod 16, and the sliding rod 16 is slidably mounted outside the guide rod 14 through the guide hole 17, when the roller 19 rolls along the rotating arm 11, the sliding rod 16 connected to the rotating arm 11 through the roller seat 18 moves upward along the guide rod 14 in the sleeve 13.
The valve body 1 outside is provided with spacing post 21, and engaging lug 6 and rocking arm 11 rotate through pivot 8 and connect, and spacing post 21 is run through to 8 one ends of pivot, and pivot 8 rotates with spacing post 21 and is connected, and the during operation, rocking arm 11 can be inboard rotatory at engaging lug 6 under the effect of rivers, and then adjusts the position of valve plug 9, realizes the intercommunication of 1 inner channel of valve body and blocks.
As an embodiment of the utility model discloses a 8 one end outsides of pivot are threaded, and 8 one end outsides of pivot are installed nut 22, and pivot 8 rotates the installation through sealed bearing 20 and spacing post 21, and during operation, fixing base 10 and connecting seat 12 that rocking arm 11 is connected drive valve plug 9 and passageway 4 and realize the closure, and it is rotatory in the 8 outsides of pivot to rotate nut 22 this moment, until nut 22 and spacing post 21 contact, realizes the fixed of pivot 8.
The working principle is as follows: the two ends of the valve body 1 are connected with the pipeline, when water enters from the water inlet end of the channel 4, impact force generated by the water acts on the valve plug 9, and further the rotating arm 11 is driven to rotate rapidly around the rotating shaft 8 on the connecting lug 6, so that the valve plug 9 moves upwards, at the same time, the channel 4 is conducted, so that the water flows, at the same time, the rotating arm 11 is firstly contacted with the buffer mechanism 7, when the roller 19 rolls along the rotating arm 11, the sliding rod 16 connected with the rotating arm 11 through the wheel seat 18 moves upwards in the sleeve 13 along the guide rod 14, the spring 15 is compressed, the buffer effect is achieved through the elastic deformation of the spring 15, when the channel 4 is disconnected with water flow, at the same time, the fixed seat 10 connected with the rotating arm 11 and the connecting seat 12 drive the valve plug 9 to move downwards to be closed with the channel 4, the channel 4 is blocked, at the same time, the rotating, the valve plug 9 is prevented from rebounding, the valve plug 9 and the valve body 1 are opened in a short time, and the backflow prevention function of the check valve can be guaranteed.
In the process of anti-reflux, the fixed seat 10 and the connecting seat 12 connected with the rotating arm 11 drive the valve plug 9 to be closed with the channel 4, at the moment, the rotating nut 22 rotates on the outer side of the rotating shaft 8 until the nut 22 is contacted with the limiting column 21, so that the rotating shaft 8 is fixed, and the situation that the valve plug 9 is opened in a short time due to rebound of the valve plug 9 and the valve body 1 and then reflux occurs is avoided;
when water enters from the water inlet end instantly, impact force generated by the water acts on the valve plug 9 to further drive the rotating arm 11 to rotate rapidly, the rotating arm 11 is firstly contacted with the buffer mechanism 7, the roller 19 rolls along the rotating arm 11, and meanwhile, the rotating arm 11 moves upwards along the guide rod 14 in the sleeve 13 through the sliding rod 16 connected with the roller seat 18 to compress the spring 15, the buffer effect is achieved through elastic deformation of the spring 15, collision between the fixed seat 10 and the inner wall of the valve body 1 is avoided, and the interior of the valve body 1 is protected.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. The anti-backflow check valve is characterized by comprising a valve body (1) and a valve cover (2), wherein the valve cover (2) is installed at the top of the valve body (1), and a channel (4) is arranged inside the valve body (1) and the valve cover (2);
a supporting rod (5) is mounted on the inner arm on one side of the top of the channel (4), a connecting lug (6) is mounted below the middle of the supporting rod (5), the inner side of the bottom end of the connecting lug (6) is rotatably mounted with the top end of a rotating arm (11), a fixed seat (10) is mounted at the bottom end of the rotating arm (11), one side of the fixed seat (10) is connected with a connecting seat (12) through a bolt, and a valve plug (9) is mounted on one side of the connecting seat (12);
buffer gear (7) are installed to bracing piece (5) one end below, buffer gear (7) include sleeve (13), guide arm (14), spring (15), slide bar (16), wheel seat (18) and gyro wheel (19), sleeve (13) top is connected with bracing piece (5) one end, guide arm (14) are installed to sleeve (13) inside top arm, spring (15) are installed in guide arm (14) outside, guide arm (14) outside just is located spring (15) below slidable mounting has slide bar (16), slide bar (16) bottom is located sleeve (13) below and installs wheel seat (18), gyro wheel (19) are installed to wheel seat (18) inboard.
2. The backflow prevention check valve of claim 1, wherein a sealing gasket (3) is installed at the joint of the valve body (1) and the valve cover (2), and the valve body (1) and the valve cover (2) are connected through a flange.
3. The backflow prevention check valve of claim 1, wherein the slide rod (16) is provided with a guide hole (17) at a top side thereof, and the slide rod (16) is slidably mounted outside the guide rod (14) through the guide hole (17).
4. The backflow prevention check valve according to claim 1, wherein a limit post (21) is disposed on an outer side of the valve body (1), the engaging lug (6) and the rotating arm (11) are rotatably connected through a rotating shaft (8), one end of the rotating shaft (8) penetrates through the limit post (21), and the rotating shaft (8) is rotatably connected with the limit post (21).
5. The backflow prevention check valve according to claim 4, wherein an outer side of one end of the rotating shaft (8) is threaded, a nut (22) is mounted on an outer side of one end of the rotating shaft (8), and the rotating shaft (8) is rotatably mounted with the limiting column (21) through a seal bearing (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021420576.0U CN212616535U (en) | 2020-07-17 | 2020-07-17 | Anti-reflux check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021420576.0U CN212616535U (en) | 2020-07-17 | 2020-07-17 | Anti-reflux check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212616535U true CN212616535U (en) | 2021-02-26 |
Family
ID=74719362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021420576.0U Expired - Fee Related CN212616535U (en) | 2020-07-17 | 2020-07-17 | Anti-reflux check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212616535U (en) |
-
2020
- 2020-07-17 CN CN202021420576.0U patent/CN212616535U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20210226 Termination date: 20210717 |