CN215487839U

CN215487839U - Hydraulic lifting quick-closing stop check valve

Info

Publication number: CN215487839U
Application number: CN202121861706.9U
Authority: CN
Inventors: 石典章; 黄艺进
Original assignee: Kaitzm Valve Tianjin Co ltd
Current assignee: Kaizm Valve Group Co.,Ltd.
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-01-11
Anticipated expiration: 2031-08-10

Abstract

According to the hydraulic lifting quick-closing stop check valve, four connecting rod holes are uniformly formed in the periphery of a connecting hole of a front pipeline, a pull ring is sleeved on the periphery of the front pipeline, four connecting rods are uniformly arranged at the rear end of the pull ring, the connecting rods penetrate through the connecting rod holes to enter a valve body to be fixedly connected with a valve seat, a valve core is fixedly connected to the center of the front end face of the valve seat, and a plurality of support columns are arranged on the outer side of the rear end face of the valve seat. When water flow flows in the forward direction, forward water pressure pushes the valve seat to move backwards, a support column on the rear end face of the valve seat is in contact with the rear side plate, and an opening between the support column and the rear side plate is used for liquid to flow towards a rear pipeline; when water flow flows reversely, the valve seat is pushed by reverse water pressure to move forwards, the valve core on the rear end face of the valve seat is closely contacted with the front side plate, the valve core blocks a front pipeline, and liquid backflow can be effectively avoided; when a user needs to allow backflow liquid to pass through, the pull ring is moved manually to change the position of the valve seat, so that the valve core can be separated from the front pipeline, and the requirement of opening backflow of the user is met.

Description

Hydraulic lifting quick-closing stop check valve

Technical Field

The utility model relates to the technical field of hydraulic control valves, in particular to a hydraulic lifting quick-closing stop check valve.

Background

Stop-check valve (stop-check valve) is a multipurpose valve having both functions of a stop valve and a check valve. The structure form is similar to that of a stop valve, but the valve rod is not fixedly connected with the valve clack. When the valve rod descends to press the valve clack on the valve seat, the valve rod plays a role of a stop valve; the valve rod acts as a check valve when lifted. The use of a stop check valve can save installation costs and space in a pipeline where both a stop valve (or gate valve) and a check valve need to be installed (such as an outlet end of a water pump), or in a place where the installation location is limited (such as a ship). The stop valve clack and valve seat sealing surface is bead welded with iron-base alloy or stellite cobalt-base hard alloy, and has the features of high wear resistance, high temperature resistance, high corrosion resistance, high scratch resistance and long service life. The product of the stop-check multi-purpose valve (multifunctional check valve) can be suitable for horizontal installation pipelines in various working conditions of petroleum, chemical industry, pharmacy, electric power industry and the like.

However, the conventional check valve has some disadvantages in use, such as: traditional check valve relies on reverse water pressure to push the valve clack to the pipeline when stopping the backward flow for prevent the inside liquid reflux of pipeline, but some special circumstances users probably need open the check valve temporarily, let liquid reverse flow partly, and traditional check valve can not carry out the short valve that opens when the non return work goes on, consequently uses inconveniently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a hydraulic lifting quick-closing stop check valve which can automatically clean dirt without gathering impurities.

In order to solve the technical problem, the hydraulic lifting quick-closing stop check valve comprises a valve body, a front pipeline and a rear pipeline, wherein the front pipeline and the rear pipeline are fixed at the front end and the rear end of the valve body, the valve body comprises a valve casing, a front side plate and a rear side plate, the centers of the front side plate and the rear side plate are respectively provided with a front pipeline connecting hole and a rear pipeline connecting hole which are connected with the front side plate and the rear side plate, four connecting rod holes are uniformly formed in the periphery of the front pipeline connecting hole, a pull ring is sleeved on the periphery of the front pipeline, four connecting rods are uniformly arranged at the rear end of the pull ring, the connecting rods penetrate through the connecting rod holes to enter the interior of the valve body to be fixedly connected with a valve seat, a valve core is fixedly connected to the center of the front end face of the valve seat, the valve core is matched with the front pipeline, and a plurality of supporting columns are arranged on the outer side of the rear end face of the valve seat.

Furthermore, a sealing ring is arranged in the connecting rod hole and matched with the connecting rod hole.

Further, the diameter of the valve seat is smaller than the inner diameter of the valve body.

Further, the inner diameter of the pull ring is larger than the outer diameter of the front pipeline.

Furthermore, the two ends of the front side plate and the rear side plate which are far away from each other are fixedly connected with a front flange and a rear flange respectively, and a plurality of bolt holes which are uniformly distributed are formed in the front flange and the rear flange.

Furthermore, the valve core is of a trapezoidal structure with the front end face smaller than the rear end face, and the valve core is made of rubber.

In conclusion, the utility model has the following beneficial effects:

according to the utility model, the valve seat capable of moving horizontally is arranged in the valve body, when water flow flows in the forward direction, the forward water pressure pushes the valve seat to move backwards, the pillar on the rear end surface of the valve seat is contacted with the rear side plate, and an opening between the pillar and the rear side plate is used for liquid to flow towards a rear pipeline; when water flow flows reversely, the valve seat is pushed by reverse water pressure to move forwards, the valve core on the rear end face of the valve seat is closely contacted with the front side plate, the valve core blocks a front pipeline, and liquid backflow can be effectively avoided; when a user needs to allow backflow liquid to pass through, the pull ring is moved manually to change the position of the valve seat, so that the valve core can be separated from the front pipeline, and the requirement of opening backflow of the user is met.

Drawings

The utility model is described in further detail below with reference to the following figures and detailed description:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is an exploded view of the valve body of the present invention;

fig. 4 is a schematic structural view of the valve seat of the present invention.

In the figure: the valve comprises a front pipeline 1, a rear pipeline 2, a valve body 3, a valve shell 301, a front side plate 302, a rear side plate 303, a front pipeline connecting hole 304, a rear pipeline connecting hole 305, a connecting rod hole 306, a sealing ring 307, a front flange 4, a rear flange 5, a valve seat 6, a valve core 7, a connecting rod 8, a pull ring 9, a bolt hole 10 and a support 11.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model is further described below with reference to the accompanying drawings:

referring to fig. 1-4, a hydraulic lifting quick-closing stop check valve comprises a valve body 3, and a front pipeline 1 and a rear pipeline 2 fixed at the front end and the rear end of the valve body 3, wherein the valve body 3 comprises a valve housing 30, a front side plate 302 and a rear side plate 303, the centers of the front side plate 302 and the rear side plate 303 are respectively provided with a front pipeline connecting hole 304 and a rear pipeline connecting hole 305 connected with the front side plate 302 and the rear side plate 303, four connecting rod holes 306 are uniformly arranged around the front pipeline connecting hole 304, a pull ring 9 is sleeved on the periphery of the front pipeline 1, four connecting rods 8 are uniformly arranged at the rear end of the pull ring 9, the connecting rods 8 pass through the connecting rod holes 306 to enter the interior of the valve body 3 to be fixedly connected with a valve seat 6, a sealing ring 307 is arranged in the connecting rod holes 306, the sealing ring 307 is matched with the connecting rod holes 306, a valve core 7 is fixedly connected at the center of the front end surface of the valve seat 6, and the valve core 7 is matched with the front pipeline 1, a plurality of pillars 11 are provided on the outer side of the rear end surface of the valve seat 6.

Further, the diameter of the valve seat 6 is smaller than the inner diameter of the valve body 3.

Further, the inner diameter of the pull ring 9 is larger than the outer diameter of the front pipe 1.

Further, the two far ends of the front side plate 302 and the rear side plate 303 are fixedly connected with a front flange plate 4 and a rear flange plate 5 respectively, and a plurality of bolt holes 10 which are uniformly distributed are formed in the front flange plate 4 and the rear flange plate 5.

Further, the valve core 7 is of a trapezoidal structure with a front end surface smaller than a rear end surface, and the valve core 7 is made of rubber.

The working principle is as follows: the utility model provides a hydraulic lifting quick-closing stop check valve, when the hydraulic lifting quick-closing stop check valve is used, when water flow flows in the forward direction, forward water pressure pushes a valve seat 6 to displace backwards, a support column 11 on the rear end surface of the valve seat 6 is in contact with a rear side plate 303, and an opening between the support column 11 and the rear side plate 303 is used for liquid to flow to a rear pipeline 2; when water flow flows reversely, the valve seat 6 is pushed by reverse water pressure to move forwards, the valve core 7 on the rear end face of the valve seat 6 is closely contacted with the front side plate 302, the valve core 7 blocks the front pipeline 1, and liquid backflow can be effectively avoided; when a user needs to allow backflow liquid to pass through, the pull ring 9 is moved manually to change the position of the valve seat 6, so that the valve core 7 can be separated from the front pipeline 1, and the requirement of opening backflow of the user is met.

In summary, the present invention is not limited to the above-described embodiments. Numerous changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the utility model. The protection scope of the present invention shall be subject to the claims of the present invention.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Claims

1. The hydraulic lifting quick-closing stop check valve is characterized by comprising a valve body (3), a front pipeline (1) and a rear pipeline (2) which are fixed at the front end and the rear end of the valve body (3), wherein the valve body (3) comprises a valve casing (301), a front side plate (302) and a rear side plate (303), the centers of the front side plate (302) and the rear side plate (303) are respectively provided with a front pipeline connecting hole (304) and a rear pipeline connecting hole (305) which are connected with the front side plate (302) and the rear side plate (303), four connecting rod holes (306) are uniformly formed in the periphery of the front pipeline connecting hole (304), a pull ring (9) is sleeved on the periphery of the front pipeline (1), four connecting rods (8) are uniformly arranged at the rear end of the pull ring (9), the connecting rods (8) penetrate through the connecting rod holes (306) to enter the interior of the valve body (3) to be fixedly connected with a valve seat (6), a valve core (7) is fixedly connected at the center of the front end face of the valve seat (6), the valve core (7) is matched with the front pipeline (1), and a plurality of support columns (11) are arranged on the outer side of the rear end face of the valve seat (6).

2. A hydraulic lift quick close check valve as in claim 1 wherein a sealing ring (307) is disposed in the connecting rod bore (306), said sealing ring (307) mating with the connecting rod bore (306).

3. A hydraulically operated lift quick closing stop check valve according to claim 2, characterized in that the diameter of the valve seat (6) is smaller than the inner diameter of the valve body (3).

4. A hydraulically lifting quick-closing stop-check valve according to claim 3, characterized in that the inner diameter of the pull ring (9) is larger than the outer diameter of the front pipe (1).

5. A hydraulic lifting quick-closing stop check valve as claimed in claim 4, wherein the two far ends of the front side plate (302) and the rear side plate (303) are fixedly connected with a front flange (4) and a rear flange (5) respectively, and a plurality of bolt holes (10) are uniformly arranged on the front flange (4) and the rear flange (5).

6. A hydraulic lifting quick-closing stop check valve as claimed in claim 1, wherein the valve core (7) is a trapezoidal structure with a front end surface smaller than a rear end surface, and the valve core (7) is made of rubber.