CN210716134U

CN210716134U - Check valve capable of limiting flow and controlling flow

Info

Publication number: CN210716134U
Application number: CN201921926590.5U
Authority: CN
Inventors: 戈伟峰
Original assignee: Yuhuan Jiayu Valve Co ltd
Current assignee: Yuhuan Jiayu Valve Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-06-09
Anticipated expiration: 2029-11-08

Abstract

The utility model provides a but check valve that current-limiting accuse flowed belongs to check valve technical field. It has solved the problem that the backward flow phenomenon appears in current check valve easily. The check valve capable of limiting and controlling flow comprises a check valve body, wherein the check valve body is provided with a water inlet end and a water outlet end which are connected with corresponding pipe fittings along the axial direction, the check valve body comprises a main body, a valve cap fixedly connected with threads of the main body and a valve core arranged between the main body and the valve cap, a first ring frame and a second ring frame are respectively arranged on the main body and the valve cap, a first check sealing assembly is arranged between the first ring frame and the second ring frame, the first check sealing assembly comprises a sealing gasket and a first check spring, the main body is positioned in the water outlet end and is provided with a second check sealing assembly, the second check sealing assembly is arranged on the right side of the first ring frame, the main body is positioned in the water outlet end and is further provided with a third ring. The utility model has the advantages of the non-return flow effect is good.

Description

Check valve capable of limiting flow and controlling flow

Technical Field

The utility model belongs to the technical field of the check valve, a but check valve that current-limiting accuse flowed is related to.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. When stopping water delivery, because of some original rivers that cause can appear adverse current phenomenon to influence the use of backward flow back equipment, shorten its life, cause the damage of backward flow back equipment even.

Disclosure of Invention

The utility model aims at providing a check valve that effectual and the leakproofness is good is flowed to the above-mentioned problem that exists among the prior art to the non return.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a but check valve of current-limiting accuse flow, includes check valve body, check valve body is equipped with the end of intaking and the play water end of being connected with corresponding pipe fitting along the axial, check valve body by the main part, constitute with main part screw thread fixed connection's valve cap and the case that sets up between main part and valve cap, main part and valve cap on equallyd divide and do not be provided with the ring frame one and the ring frame two that link firmly mutually and be used for supporting the case with corresponding main part and valve cap, its characterized in that, ring frame one and ring frame two between be provided with the cover and locate non return seal assembly one on the case, non return seal assembly one constitute by seal gasket and non return spring one, the main part be located to be provided with in the play water end and overlap and locate non return seal assembly two that just is used for strengthening the non return effect on the case, and non return seal assembly two install in the right side of ring frame one, the main part is located play water end and still is provided And the second check sealing assembly consists of an annular baffle and a second check spring.

In foretell check valve that can current-limiting accuse flows, non return spring one be conical spring, the both ends of non return spring one inconsistent with the terminal surface that the seal gasket faced non return spring one and the terminal surface that the ring frame faced non return spring one respectively, the seal gasket install in the left side of non return spring one, and the seal gasket passes through the sealed valve cap of the effect of non return spring one.

In the above-mentioned check valve capable of limiting the flow and controlling the flow, the valve cap is provided with an annular supporting block which axially extends towards the sealing gasket and is convenient for the sealing gasket to seal the valve cap.

In the above-mentioned check valve capable of limiting and controlling flow, the sealing gasket is annularly arranged, an end surface of the sealing gasket, which is abutted against the annular supporting block, is provided with an annular extending portion which axially extends towards the annular supporting block and is embedded into the annular supporting block, a buffering ring piece is arranged between the sealing gasket and the first check spring, and the buffering ring piece is provided with a mounting groove for the first check spring to extend into for mounting.

In the above-mentioned check valve capable of limiting and controlling flow, a convex ring part protruding outward in the radial direction and limiting the position of the sealing gasket is arranged on the outer peripheral wall of the valve core at the left side of the sealing gasket.

In the above-mentioned check valve capable of limiting and controlling flow, the annular baffle is installed on the left side of the second check spring, two ends of the second check spring respectively abut against the end face of the annular baffle facing the second check spring and the end face of the third ring frame facing the first check spring, and the annular baffle seals the first ring frame through the action of the second check spring.

In the above-mentioned check valve capable of limiting and controlling flow, the third ring frame is detachably connected with the main body through screw thread fit.

Compared with the prior art, the check valve capable of limiting and controlling flow has the following advantages:

1. the check sealing assembly is characterized in that a first check sealing assembly is arranged between the first ring frame and the second ring frame and sleeved on the valve element, the first check sealing assembly is composed of a sealing gasket and a first check spring, the main body is positioned in the water outlet end and is provided with a second check sealing assembly sleeved on the valve element and used for enhancing the check flow effect, the second check sealing assembly is installed on the right side of the first ring frame, the main body is positioned in the water outlet end and is further provided with a third ring frame which is connected with the main body in a detachable mode and used for limiting the position of the second sealing assembly, the second check sealing assembly is composed of an annular baffle and a second check spring, and due to the arrangement of the structure, the check valve is provided with a double backflow preventing structure.

Drawings

Fig. 1 is a schematic cross-sectional view of the present flow-restricting and flow-controlling check valve.

In the figure, 1, a check valve body; 2. a water inlet end; 3. a water outlet end; 4. a main body; 5. a bonnet; 6. a valve core; 7. a first ring frame; 8. a second ring frame; 9. a first check sealing component; 10. sealing gaskets; 11. a first check spring; 12. a second check sealing assembly; 13. a third ring frame; 14. an annular baffle; 15. a second check spring; 16. an annular support block; 17. an annular extension; 18. a buffer ring sheet; 19. mounting grooves; 20. the convex ring part.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figure 1, the flow-limiting and flow-controlling check valve comprises a check valve body 1, wherein the check valve body 1 is provided with a water inlet end 2 and a water outlet end 3 which are connected with corresponding pipe fittings along the axial direction, the water inlet end 2 and the water outlet end 3 are provided with internal threads or external threads which are connected with the pipe fittings, the check valve body 1 consists of a main body 4, a valve cap 5 which is fixedly connected with the main body 4 through threads and a valve core 6 which is arranged between the main body 4 and the valve cap 5, a check flow cavity chamber for installing the valve core 6 is formed between the main body 4 and the valve cap 5, the main body 4 and the valve cap 5 are respectively provided with a ring frame I7 and a ring frame II 8 which are fixedly connected with the corresponding main body 4 and the valve cap 5 and are used for supporting the valve core 6, the ring frame I7 and the ring frame II 8 are respectively provided with a plurality of flow holes which are distributed at intervals along the circumferential direction and are arranged in an arc shape, a check sealing component I, the first non-return sealing assembly 9 is composed of a sealing gasket 10 and a first non-return spring 11, the main body 4 is positioned in the water outlet end 3 and is internally provided with a second non-return sealing assembly 12 which is sleeved on the valve core 6 and used for enhancing the non-return effect, the second non-return sealing assembly 12 is arranged on the right side of the first ring frame 7, the main body 4 is positioned in the water outlet end 3 and is also provided with a third ring frame 13 which is detachably connected with the main body 4 and used for limiting the second position of the sealing assembly, a second non-return cavity is formed between the third ring frame 13 and the first ring frame 7, the second non-return sealing assembly 12 is composed of an annular baffle 14 and a second non-return spring 15, the first non-return spring 11 is a conical spring, two ends of the first non-return spring 11 are respectively abutted against the end face of the sealing gasket 10 facing the first non-return spring 11 and the end face of the first ring frame 7 facing the first non-return spring, the installation of annular baffle 14 with the left side of two check springs 15, the both ends of two check springs 15 respectively with annular baffle 14 towards the terminal surface of two check springs 15 and the terminal surface counterbalance of ring frame three 13 towards one check spring 11, annular baffle 14 seals ring frame one 7 through two check springs 15's effect, when not beginning the water delivery, the terminal surface of annular baffle 14 towards ring frame one 7 offsets with ring frame one 7 towards the terminal surface of annular baffle 14, annular baffle 14 is located the terminal surface of laminating mutually with ring frame one 7 and is provided with the annular embedding portion that the axial is protruding to ring frame one 7 and imbed in ring frame one 7, the internal diameter of embedding portion is greater than two relative maximum distance that set up the runner hole.

As the preferred structure, the third annular frame 13 is detachably connected with the main body 4 through thread fit, a through hole for the valve core 6 to pass through is formed in the middle of the third annular frame 13, a plurality of circulation holes which are distributed at intervals along the circumferential direction of the third annular frame 13 and are arranged in an arc shape are formed in the third annular frame 13, and filter screens which are fixedly connected with the third annular frame 13 and have a filtering effect are arranged at the positions, corresponding to the circulation holes, of the third annular frame 13.

In more detail, in order to make the sealing performance of the valve cap 5 and the sealing gasket 10 better after being attached, an annular supporting block 16 which extends axially towards the sealing gasket 10 and is convenient for the sealing gasket 10 to seal the valve cap 5 is arranged on the valve cap 5, when water delivery is not started, the end surface of the sealing gasket 10 facing the annular supporting block 16 is abutted against the end surface of the annular supporting block 16 facing the sealing gasket 10, the sealing gasket 10 is annularly arranged, the end surface of the sealing gasket 10 abutting against the annular supporting block 16 is provided with an annular extending portion 17 which extends axially towards the annular supporting block 16 and is embedded into the annular supporting block 16, the outer peripheral wall of the annular extending portion 17 is in sliding fit with the inner peripheral wall of the annular supporting block 16, the annular extending portion 17 is provided with a chamfer, a buffer ring piece 18 is arranged between the sealing gasket 10 and the first check spring 11, and, the diameter of the sealing gasket 10 is not less than that of the annular supporting block 16, and the outer peripheral wall of the annular supporting block 16 is provided with an inclined chamfer.

To put it more concretely, in order to facilitate the installation of the seal gasket 10, the outer peripheral wall of the valve body 6 at the left side of the seal gasket 10 is provided with a convex ring portion 20 which protrudes radially outward and limits the position of the seal gasket 10.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a but check valve of current-limiting accuse flow, includes check valve body (1), check valve body (1) be equipped with along the axial with corresponding pipe fitting connection intake end (2) and go out water end (3), check valve body (1) by main part (4), with main part (4) screw thread fixed connection's valve cap (5) and set up case (6) between main part (4) and valve cap (5) and constitute, main part (4) and valve cap (5) on equallyd divide and be provided with respectively and link firmly with corresponding main part (4) and valve cap (5) and be used for the ring frame one (7) and the ring frame two (8) of supporting case (6) mutually, its characterized in that, ring frame one (7) and ring frame two (8) between be provided with the non return seal assembly one (9) of cover on case (6), non return seal assembly one (9) constitute by seal gasket (10) and non return spring one (11), the valve is characterized in that the main body (4) is positioned in the water outlet end (3) and is internally provided with a second check sealing assembly (12) which is sleeved on the valve core (6) and used for enhancing the check flow effect, the second check sealing assembly (12) is arranged on the right side of the first ring frame (7), the main body (4) is positioned in the water outlet end (3) and is also provided with a third ring frame (13) which is detachably connected with the main body (4) and used for limiting the position of the second sealing assembly, and the second check sealing assembly (12) is composed of an annular baffle plate (14) and a second check spring (15).

2. A flow-limiting and flow-controlling check valve according to claim 1, wherein the first check spring (11) is a conical spring, both ends of the first check spring (11) respectively abut against the end surface of the sealing gasket (10) facing the first check spring (11) and the end surface of the first ring frame (7) facing the first check spring (11), the sealing gasket (10) is installed at the left side of the first check spring (11), and the sealing gasket (10) seals the valve cap (5) by the action of the first check spring (11).

3. A flow-limiting and flow-controlling check valve according to claim 1, characterized in that said valve cap (5) is provided with an annular support block (16) extending axially towards said sealing gasket (10) and facilitating the sealing of said sealing gasket (10) against said valve cap (5).

4. The flow-limiting and flow-controlling check valve according to claim 1, wherein the sealing gasket (10) is annularly arranged, an end surface of the sealing gasket (10) abutting against the annular supporting block (16) is provided with an annular extending portion (17) which axially extends towards the annular supporting block (16) and is embedded into the annular supporting block (16), a buffering ring piece (18) is arranged between the sealing gasket (10) and the first check spring (11), and the buffering ring piece (18) is provided with a mounting groove (19) for the first check spring (11) to extend into for mounting.

5. A flow-restricted flow-controlled check valve according to claim 1, characterized in that the outer peripheral wall of the spool (6) at the left side of the sealing gasket (10) is provided with a collar portion (20) which projects radially outward and restricts the position of the sealing gasket (10).

6. A flow-limiting and flow-controlling check valve according to claim 1, characterized in that the annular baffle (14) is installed at the left side of the second check spring (15), the two ends of the second check spring (15) respectively abut against the end surface of the annular baffle (14) facing the second check spring (15) and the end surface of the third ring frame (13) facing the first check spring (11), and the annular baffle (14) seals the first ring frame (7) by the action of the second check spring (15).

7. A flow-restricting and flow-controlling non-return valve according to claim 1, characterized in that the third ring frame (13) is detachably connected to the main body (4) by screw-fitting.