CN218992457U

CN218992457U - Swing check valve

Info

Publication number: CN218992457U
Application number: CN202223592092.6U
Authority: CN
Inventors: 杨琳珊
Original assignee: Minggong Valve Co ltd
Current assignee: Minggong Valve Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-05-09
Anticipated expiration: 2033-04-14

Abstract

The utility model provides a swing check valve, which comprises a valve body, wherein a swing arm is arranged in the valve body, the upper end of the swing arm is hinged with the valve body, the lower end of the swing arm is connected with a valve clack, the upper end of the valve body is provided with an opening, the swing check valve further comprises an annular mounting ring, the mounting ring is detachably arranged on the inner side of the opening at the upper end of the valve body, a fixing strip is arranged in the mounting ring, a first threaded hole is formed in the fixing strip, the swing check valve further comprises a collision screw, the collision screw is connected in the first threaded hole, and the lower end of the collision screw collides with the swing arm or the valve clack to limit the opening angle of the valve clack. When the valve clack is opened, the swing arm and/or the valve clack collides with the lower end of the collision screw, so that the maximum opening angle of the valve clack can be limited, and the collision position of the valve clack and the collision screw is adjusted by adjusting the height of the collision screw and the position on the fixing strip, so that the opening angle of the valve clack is adjusted.

Description

Swing check valve

Technical Field

The utility model relates to the technical field of valves, in particular to a swing check valve.

Background

The existing common swing check valve comprises a valve body, wherein a valve clack capable of swinging is arranged in the valve body.

A swing check valve as disclosed in CN202222465129.2 is a common swing check valve, and at present, most of the opening angles of the valve flaps of the existing check valves cannot be adjusted, and the valve flaps are basically at the maximum opening angle under the impact of fluid.

The applicant therefore considered to design a structure in which the opening angle of the flap can be adjusted.

Disclosure of Invention

Aiming at the problems pointed out in the background art, the utility model provides a swing check valve which can adjust the opening angle of a valve clack, has a simple structure and reasonable design, and is convenient for modifying and designing the existing check valve.

The technical scheme of the utility model is realized as follows:

the utility model provides a swing check valve, includes the valve body, is equipped with the swing arm in the valve body, and the upper end and the valve body of swing arm are articulated, and the lower extreme of swing arm is connected with the valve clack, and the upper end opening of valve body sets up, still includes annular collar, and collar demountable installation is in valve body upper end open-ended inboard, is equipped with the fixed strip in the collar, is equipped with screw hole one on the fixed strip, still includes the collision screw, and the collision screw is connected in screw hole one, and the lower extreme of collision screw collides with swing arm or valve clack and restricts the angle that the valve clack opened.

Through adopting above-mentioned technical scheme, set up the collar in the upper end opening part in the valve body, set up the collision screw that can carry out upper and lower position adjustment on the collar, the swing arm of opening or valve clack collide with the lower extreme of collision screw and restrict the angle that the valve clack was opened, adjust the height of collision screw lower extreme, adjust collision position, just so can adjust the opening angle of valve clack, above-mentioned structure need not to reform transform current valve, and can install and use on current most swing check valves.

The utility model is further characterized in that a second threaded hole is formed in the side wall of the mounting ring, a fastening screw is connected in the second threaded hole, and the fastening screw is abutted against the side wall of the valve body.

Through adopting above-mentioned technical scheme, in the valve body upper end opening on the collar installation, through screwing the fastening screw, make fastening screw butt on the valve body inside wall, form pretightning force, make collar and valve body form fixed connection, adopt this structure, need not to improve valve body self structure, just can install the collar in the valve body, make things convenient for the structure configuration of this application to use on current valve.

The utility model is further arranged that the rotation directions of the fixing strip and the swing arm are positioned in the same plane, the fixing strip is provided with a plurality of first threaded holes, and the first threaded holes are arranged at intervals in the length direction of the fixing strip.

By adopting the technical scheme, the range of adjusting the position of the collision screw can be enlarged, and the capability of adjusting the opening angle of the valve clack by the collision screw is enhanced.

The utility model further provides that the mounting ring is connected with the upper end opening of the valve body in an adapting way, and the mounting ring is in a circular shape.

The utility model further provides that at least two fastening screws are arranged, and the fastening screws are uniformly distributed in the circumferential direction of the mounting ring.

By adopting the technical scheme, the utility model has the beneficial effects that:

when the valve clack of the check valve provided by the utility model is opened, the swing arm and/or the valve clack collides with the lower end of the collision screw, so that the maximum opening angle of the valve clack can be limited, and the collision position of the valve clack and the collision screw is adjusted by adjusting the height of the collision screw and the position of the valve clack on the fixing strip, so that the opening angle of the valve clack is adjusted. The fixed ring is manufactured to be matched with the inner diameter of the upper end opening of the valve body, and the mounting ring is fixedly connected with the valve body through the fastening screw.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a cross-sectional view of the present utility model.

FIG. 2 is a schematic view of the mounting ring of the present utility model.

Fig. 3 is a cross-sectional view of the mounting ring of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model is illustrated below with reference to fig. 1-3:

example 1: the utility model provides a swing check valve, includes valve body 1, is equipped with swing arm 2 in the valve body 1, and swing arm 2's upper end is articulated with valve body 1, and swing arm 2's lower extreme is connected with valve clack 3, and valve body 1's upper end opening sets up, is the current structure of swing check valve above, below for the improvement technical scheme of this application:

still include annular collar 4, collar 4 demountable installation is in valve body 1 upper end open-ended inboard, collar 4 is connected with the upper end open-ended adaptation of valve body 1, the external diameter of collar 4 equals valve body 1 upper end open-ended internal diameter, be equipped with screw hole two 5 on the lateral wall of collar 4, screw hole two 5 internal connection has fastening screw 6, fastening screw 6 offsets the cooperation with valve body 1's lateral wall, fastening screw 6 is screwed the back and offsets the cooperation with valve body 1's lateral wall, forms the pretightning force, makes collar fixed mounting on the valve body. The fastening screws 6 are provided at least in two, and the fastening screws 6 are uniformly distributed in the circumferential direction of the mounting ring 4.

The mounting ring 4 is internally provided with a fixing strip 7, the fixing strip 7 is of a strip shape, two ends of the fixing strip 7 are respectively fixedly connected with the inner wall of the mounting ring 4, the fixing strip 7 is provided with a first threaded hole 8, the mounting ring further comprises a collision screw 9, the collision screw 9 is connected in the first threaded hole 8, and the lower end of the collision screw 9 collides with the swing arm 2 or the valve clack 3 to limit the opening angle of the valve clack 3. When the valve clack 3 is opened, the swing arm 2 or the valve clack 3 collides with the lower end of the collision screw 9 to limit the opening angle of the valve clack, the collision screw 9 is rotated to adjust the height of the lower end of the collision screw 9, the collision position is adjusted, and the opening angle of the valve clack is adjusted.

The rotation directions of the fixing strip 7 and the swing arm 2 are positioned in the same plane, a plurality of first threaded holes 8 are formed in the fixing strip 7, and the first threaded holes 8 are arranged at intervals in the length direction of the fixing strip 7. The impact screw 9 is connected to a different threaded hole 8 to adjust the impact position, such as height adjustment and side-to-side displacement adjustment, which combine to enhance the adjustability of the impact screw 9.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the utility model.

Claims

1. The utility model provides a swing check valve, includes the valve body, is equipped with the swing arm in the valve body, and the upper end and the valve body of swing arm are articulated, and the lower extreme of swing arm is connected with the valve clack, and the upper end opening of valve body sets up, its characterized in that: still include annular collar, collar demountable installation is equipped with the fixed strip in the inboard of valve body upper end open-ended, is equipped with screw hole one on the fixed strip, still includes the collision screw, and collision screw connects in screw hole one, and collision screw's lower extreme collides with swing arm or valve clack and restricts the angle that the valve clack opened.

2. A swing check valve according to claim 1, wherein: the side wall of the mounting ring is provided with a second threaded hole, a fastening screw is connected in the second threaded hole, and the fastening screw is abutted against the side wall of the valve body.

3. A swing check valve according to claim 1, wherein: the fixing strip and the swing arm are positioned in the same plane in the rotation direction, a plurality of first threaded holes are formed in the fixing strip, and the first threaded holes are arranged at intervals in the length direction of the fixing strip.

4. A swing check valve according to claim 1, wherein: the mounting ring is connected with the upper end opening of the valve body in an adapting way, and the mounting ring is circular.

5. A swing check valve according to claim 2, wherein: the fastening screws are at least two, and the fastening screws are uniformly distributed in the circumferential direction of the mounting ring.