CN212429858U

CN212429858U - Wafer type lifting check valve

Info

Publication number: CN212429858U
Application number: CN202020838662.7U
Authority: CN
Inventors: 洪文华
Original assignee: Jiangsu Huaying Valves Co ltd
Current assignee: Jiangsu Huaying Valves Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-01-29
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a wafer formula lift check valve, including valve body and valve gap, the inside bottom of valve body is provided with seal structure, the inside of valve body is provided with the spring, seal structure's top fixed connection has the valve clack, the bottom fixedly connected with sealing surface of valve clack, the equal fixedly connected with sound attenuation structure in both sides of valve clack. The utility model discloses an inside fixedly connected with gland of valve gap, all be provided with the external screw thread on the lateral wall of gland, be provided with the internal thread on the inside wall of valve gap, during the use, be equipped with the internal thread on the inside wall of valve gap, be equipped with the external screw thread on the lateral wall of gland, internal thread and external screw thread mutually support, threaded connection has been constituted between valve gap and the gland, the rotatory gland of staff will make the gland remove, thereby change the height of spring and the pretightning force of effect on the valve clack, realize setting for minimum opening pressure's adjustment and the accurate minimum opening pressure that reaches the regulation, the high efficiency performance.

Description

Wafer type lifting check valve

Technical Field

The utility model relates to the technical field of valves, specifically be a wafer formula lift check valve.

Background

Present wafer formula check valve mainly is in order to prevent the valve of the medium refluence in the pipeline, and the check valve kind commonly used is more, is applicable to different circumstances, and current wafer formula lift check valve still has some problems, and the leakproofness during the use is not enough, influences the result of use of valve to long-term the back of using, the noise is sent easily.

In the process of implementing the present invention, the inventor finds that at least the following problems exist in the prior art and are not solved:

(1) the traditional wafer type lifting check valve has insufficient sealing performance, so that the use efficiency of the valve is greatly reduced;

(2) the valve of the traditional wafer type lifting check valve has poor pretightening force and cannot accurately reach specified pressure;

(3) the traditional wafer type lifting check valve is seriously abraded after long-term use, noise is easily generated, and the production efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wafer formula lift check valve to propose among the above-mentioned background art that the leakproofness is not enough, the accuracy is relatively poor and use the problem of easily producing the noise for a long time.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a wafer formula lift check valve, includes valve body and valve gap, the inside bottom of valve body is provided with seal structure, the inside of valve body is provided with the spring, seal structure's top fixed connection has the valve clack, the sealed face of bottom fixedly connected with of valve clack, the equal fixedly connected with amortization structure in both sides of valve clack, the inside top fixedly connected with valve gap of valve body, the inside fixedly connected with gland of valve gap, all be provided with the external screw thread on the lateral wall of gland, be provided with the internal thread on the inside wall of valve gap.

Preferably, the inside of seal structure has set gradually sealing washer, connecting seat and rubber circle, the sealing washer all sets up the both sides in sealed face bottom, the outside of sealing washer is provided with the connecting seat, the inside fixedly connected with rubber circle of connecting seat.

Preferably, the outer diameter of the sealing ring is smaller than the inner diameter of the connecting seat, and the sealing ring is symmetrically distributed about the vertical center line of the valve clack.

Preferably, all be provided with on the gland lateral wall with internal thread matched with external screw thread, be threaded connection between valve gap and the gland.

Preferably, connecting block, silencer, sound insulation gasket, sliding ball and spout have set gradually in the inside of amortization structure, silencer fixed connection is in the intermediate position department on valve clack top, the sound insulation gasket sets up the bottom at the valve clack, the intermediate position department fixedly connected with connecting block of sound insulation gasket bottom, the equal fixedly connected with spout in both sides of connecting block inside, the inside of spout all is provided with sliding ball.

Preferably, the width of the inside of the sliding groove is larger than the width of the outside of the sliding balls, and the sliding balls are arranged in the sliding groove at equal intervals.

Compared with the prior art, the beneficial effects of the utility model are that: the wafer type lifting check valve not only realizes a sealing structure, improves the use efficiency of the valve, realizes an adjusting structure, increases the accuracy of the valve, but also realizes a silencing structure and improves the working efficiency of the valve;

(1) when the valve is used, a specific spring is arranged on one side of the valve clack to enable the sealing surface and the sealing ring to realize initial sealing, the sealing rings are arranged on two sides of the bottom end of the valve clack, the sealing rings are embedded in the connecting seat, and the rubber ring is arranged in the connecting seat, so that the sealing performance of the valve is improved, and the use efficiency of the valve is improved;

(2) the valve cover is fixedly connected with the gland through the inside, the outer side wall of the gland is provided with the external threads, the inner side wall of the valve cover is provided with the internal threads, when the valve cover is used, the inner side wall of the valve cover is provided with the internal threads, the outer side wall of the gland is provided with the external threads, the internal threads and the external threads are matched with each other, the valve cover and the gland are in threaded connection, and a worker rotates the gland to enable the gland to move, so that the height of a spring and the pretightening force acting on the valve clack are changed, the adjustment of the set minimum opening pressure is realized;

(3) through set gradually the connecting block in the inside of amortization structure, the silencer, the sound insulation gasket, smooth pearl and spout, during the use, the silencer setting is in the bottom of spring, the connecting block is connected with the silencer, the noise that produces in the valve use is eliminated, the sound insulation gasket sets up between silencer and connecting block, the internal connection of connecting block has the spout, the inside of spout is provided with smooth pearl, spout and smooth pearl mutually support, frictional resistance when having reduced the valve and using has prolonged the life of valve.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

fig. 2 is an enlarged partial cross-sectional view of the utility model at a in fig. 1;

FIG. 3 is a schematic view of the enlarged front section structure of the connecting block of the present invention;

fig. 4 is a schematic view of the front sectional structure of the gland of the present invention.

In the figure: 1. a valve body; 2. a sealing structure; 201. a seal ring; 202. a connecting seat; 203. a rubber ring; 3. a valve flap; 4. a sealing surface; 5. a spring; 6. a valve cover; 7. an internal thread; 8. a gland; 9. an external thread; 10. a sound deadening structure; 1001. connecting blocks; 1002. a muffler; 1003. a sound-insulating spacer; 1004. a sliding bead; 1005. a chute.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a butt-clamping type lifting check valve comprises a valve body 1 and a valve cover 6, wherein a sealing structure 2 is arranged at the bottom end inside the valve body 1, a spring 5 is arranged inside the valve body 1, a valve clack 3 is fixedly connected to the top end of the sealing structure 2, a sealing surface 4 is fixedly connected to the bottom end of the valve clack 3, silencing structures 10 are fixedly connected to two sides of the valve clack 3, the valve cover 6 is fixedly connected to the top end inside the valve body 1, a gland 8 is fixedly connected to the inside of the valve cover 6, external threads 9 are arranged on the outer side wall of the gland 8, and internal threads;

a sealing ring 201, a connecting seat 202 and a rubber ring 203 are sequentially arranged in the sealing structure 2, the sealing ring 201 is arranged on two sides of the bottom end of the sealing surface 4, the connecting seat 202 is arranged outside the sealing ring 201, and the rubber ring 203 is fixedly connected in the connecting seat 202;

the outer diameter of the sealing ring 201 is smaller than the inner diameter of the connecting seat 202, and the sealing ring 201 is symmetrically distributed about the vertical center line of the valve clack 3;

specifically, as shown in fig. 1 and 2, when the mechanism is used, firstly, when the mechanism is used, a specific spring 5 is arranged on one side of the valve flap 3 to enable the sealing surface 4 and the sealing ring 201 to realize initial sealing, the sealing ring 201 is arranged on both sides of the bottom end of the valve flap 3, the sealing ring 201 is embedded in the connecting seat 202, and the rubber ring 203 is arranged in the connecting seat 202, so that the sealing performance of the valve is improved, and the use efficiency of the valve is improved;

the outer side wall of the gland 8 is provided with an external thread 9 matched with the internal thread 7, and the valve cover 6 is in threaded connection with the gland 8;

specifically, as shown in fig. 1 and 4, when the mechanism is used, firstly, when the mechanism is used, an inner thread 7 is arranged on the inner side wall of the valve cover 6, an outer thread 9 is arranged on the outer side wall of the gland 8, the inner thread 7 and the outer thread 9 are matched with each other, a threaded connection is formed between the valve cover 6 and the gland 8, and a worker rotates the gland 8 to move the gland 8, so that the height of the spring 5 and the pretightening force acting on the valve clack 3 are changed, the adjustment of the set minimum opening pressure is realized, the specified minimum opening pressure is accurately reached, and the high efficiency of the valve is improved;

the noise reduction structure 10 is internally provided with a connecting block 1001, a silencer 1002, a sound insulation gasket 1003, a sliding ball 1004 and a sliding groove 1005 in sequence, the silencer 1002 is fixedly connected to the middle position of the top end of the valve clack 3, the sound insulation gasket 1003 is arranged at the bottom end of the valve clack 3, the connecting block 1001 is fixedly connected to the middle position of the bottom end of the sound insulation gasket 1003, the sliding grooves 1005 are fixedly connected to two sides of the inside of the connecting block 1001, the width of the inside of each sliding groove 1005 is larger than the width of the outside of the sliding ball 1004, the sliding balls 1004 are arranged in the sliding groove 1005 at equal intervals, and the sliding;

specifically, as shown in fig. 1 and 3, when the mechanism is used, firstly, when the mechanism is used, a silencer 1002 is arranged at the bottom end of the spring 5, the connecting block 1001 is connected with the silencer 1002, noise generated in the use process of the valve is eliminated, a sound insulation gasket 1003 is arranged between the silencer 1002 and the connecting block 1001, a sliding groove 1005 is connected inside the connecting block 1001, a sliding ball 1004 is arranged inside the sliding groove 1005, the sliding groove 1005 and the sliding ball 1004 are matched with each other, the friction resistance of the valve in use is reduced, and the service life of the valve is prolonged.

The working principle is as follows: the utility model discloses when using, at first, during the use, one side of valve clack 3 is equipped with specific spring 5 and makes sealed face 4 and sealing washer 201 realize initial seal, and the both sides of 3 bottoms of valve clack all are equipped with sealing washer 201, and sealing washer 201 inlays in the inside of connecting seat 202, and the inside of connecting seat 202 is provided with rubber circle 203, has improved the leakproofness that the valve used, has improved the availability factor of valve.

Later, during the use, be equipped with internal thread 7 on the inside wall of valve gap 6, be equipped with external screw thread 9 on the lateral wall of gland 8, internal thread 7 and external screw thread 9 mutually support, have constituted threaded connection between valve gap 6 and the gland 8, and the staff rotates gland 8 and will make gland 8 remove to change the height of spring 5 and the pretightning force of effect on valve clack 3, realize setting for minimum opening pressure's adjustment and accurately reach the minimum opening pressure of regulation, increased the high efficiency performance of valve.

Finally, during the use, silencer 1002 sets up in spring 5's bottom, and connecting block 1001 is connected with silencer 1002, and the noise that produces is eliminated in the valve use, and sound insulation gasket 1003 sets up between silencer 1002 and connecting block 1001, and the internal connection of connecting block 1001 has spout 1005, and the inside of spout 1005 is provided with smooth pearl 1004, and spout 1005 and smooth pearl 1004 mutually support, have reduced the frictional resistance when the valve uses, have prolonged the life of valve.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a wafer formula lift check valve, includes valve body (1) and valve gap (6), its characterized in that: the bottom of valve body (1) inside is provided with seal structure (2), the inside of valve body (1) is provided with spring (5), the top fixedly connected with valve clack (3) of seal structure (2), the sealed face (4) of bottom fixedly connected with of valve clack (3), the equal fixedly connected with sound attenuation structure (10) in both sides of valve clack (3), the top fixedly connected with valve gap (6) of valve body (1) inside, the inside fixedly connected with gland (8) of valve gap (6), all be provided with external screw thread (9) on the lateral wall of gland (8), be provided with internal thread (7) on the inside wall of valve gap (6).

2. The wafer-type lifting check valve of claim 1, wherein: the sealing structure is characterized in that a sealing ring (201), a connecting seat (202) and a rubber ring (203) are sequentially arranged inside the sealing structure (2), the sealing ring (201) is arranged on two sides of the bottom end of the sealing surface (4), the connecting seat (202) is arranged outside the sealing ring (201), and the rubber ring (203) is fixedly connected inside the connecting seat (202).

3. The wafer-type lifting check valve of claim 2, wherein: the outer diameter of the sealing ring (201) is smaller than the inner diameter of the connecting seat (202), and the sealing ring (201) is symmetrically distributed around the vertical center line of the valve clack (3).

4. The wafer-type lifting check valve of claim 1, wherein: all be provided with on gland (8) lateral wall with internal thread (7) matched with external screw thread (9), be threaded connection between valve gap (6) and gland (8).

5. The wafer-type lifting check valve of claim 1, wherein: the noise reduction structure is characterized in that a connecting block (1001), a silencer (1002), a sound insulation gasket (1003), a sliding ball (1004) and a sliding groove (1005) are sequentially arranged inside the noise reduction structure (10), the silencer (1002) is fixedly connected to the middle position of the top end of the valve clack (3), the sound insulation gasket (1003) is arranged at the bottom end of the valve clack (3), the connecting block (1001) is fixedly connected to the middle position of the bottom end of the sound insulation gasket (1003), the sliding balls (1004) are fixedly connected to the two sides inside the connecting block (1001), and the sliding ball (1005) is arranged inside the sliding groove (1005).

6. The wafer-type lifting check valve of claim 5, wherein: the width of the inside of the sliding groove (1005) is larger than the width of the outside of the sliding balls (1004), and the sliding balls (1004) are arranged in the sliding groove (1005) at equal intervals.