CN210318663U

CN210318663U - Swing check valve

Info

Publication number: CN210318663U
Application number: CN201921163767.0U
Authority: CN
Inventors: 杨忠海
Original assignee: Zhejiang Mengzhou Valve Co ltd
Current assignee: Zhejiang Mengzhou Valve Co ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-04-14
Anticipated expiration: 2029-07-23

Abstract

The application provides a swing check valve, include: the valve comprises a valve body, a valve cover and a valve clack, wherein the valve cover is connected to the upper end of the valve body through a stud bolt, a support is arranged on the inner wall of the valve body, the lower end of the support is hinged to a rocker through a pin shaft, the rocker is connected to a connecting column at one end of the valve clack, a liquid inlet cavity and a liquid outlet cavity are respectively arranged on the left side and the right side of the valve body, the other end of the valve clack is provided with a sealing block which abuts against the outlet end of the liquid inlet cavity, a mounting plate is further arranged on the inner wall of the valve body, and a buffer. The application provides a swing check valve has solved the check valve and when closing or opening, and the metal takes place the vibration impact with metal direct contact easily, influences result of use and life's technical problem.

Description

Swing check valve

Technical Field

The utility model relates to a water valve design technical field especially relates to a swing check valve.

Background

The swing check valve is also called a check valve or a check valve and is used for preventing media in the pipeline from flowing backwards. When the medium in the pipeline flows in the forward direction, the valve clack of the check valve automatically opens under the action of the medium force, and when the medium in the pipeline flows in the reverse direction, the valve clack automatically closes under the action of the medium force. Most check valves are closing or when opening at present, and the valve clack bumps with the valve body easily, because metal and metal direct contact bump, makes the valve body inner wall damaged by the collision easily, and the valve clack influences the result of use under the vibration is strikeed, leads to the life of check valve to receive the influence.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a swing check valve has solved the check valve and when closing or opening, and the metal takes place the vibration impact with metal direct contact easily, influences result of use and life's technical problem.

In order to solve the technical problem, the utility model provides a following technical scheme:

a swing check valve comprising: the valve comprises a valve body, a valve cover and a valve clack, wherein the valve cover is connected to the upper end of the valve body through a stud bolt, a support is arranged on the inner wall of the valve body, the lower end of the support is hinged to a rocker through a pin shaft, the rocker is connected to a connecting column at one end of the valve clack, a liquid inlet cavity and a liquid outlet cavity are respectively arranged on the left side and the right side of the valve body, the other end of the valve clack is provided with a sealing block which abuts against the outlet end of the liquid inlet cavity, a mounting plate is further arranged on the inner wall of the valve body, and a buffer.

Further, buffer includes connecting rod, bulb, baffle and spring one, the connecting rod slides and sets up in the mounting panel, the bulb is connected the lower extreme of connecting rod, the baffle is connected the upper end of connecting rod, the spring is established by one set on the connecting rod, just the both ends of spring one support respectively the fender the mounting panel with between the bulb.

Furthermore, the middle part of the rocker is sleeved on a connecting column at one end of the valve clack, a nut which is blocked on one side of the rocker is arranged on the connecting column, and the connecting column is in contact with the ball head when the rocker swings.

Furthermore, the lower end of the rocker is provided with a spherical bulge.

Furthermore, the support comprises a connecting plate and a pair of arc-shaped arms connected to two sides of the lower end of the connecting plate, the connecting plate is connected to the inner wall of the valve body, and the upper end of the rocker is pivoted between the pair of arc-shaped arms.

Furthermore, the inner wall of the valve body is further provided with a limiting block for limiting the swing highest position of the rocker, the lower end of the limiting block is fixedly connected with a second spring, and the spherical protrusion is in contact with the second spring when the rocker swings.

Further, the top end of the valve cover is connected with a hanging ring.

According to the above technical scheme, the utility model discloses following beneficial effect has:

1. because the inner wall of the valve body is provided with the buffer device for slowing down the motion impact of the rocker, the shock generated when the rocker swings can be effectively relieved, thereby reducing the shock vibration to the valve clack and prolonging the service life;

2. because the lower end of the limiting block is fixedly connected with the second spring which is used for relieving the impact and vibration when the rocking bar impacts the limiting block, the service life of the whole body is prolonged.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a sectional view of the present invention.

Fig. 2 is a schematic structural diagram of the buffering device of the present invention.

Fig. 3 is a front view of the bracket of the present invention.

Fig. 4 is a right side view of the bracket of the present invention.

Fig. 5 is a top view of the bracket of the present invention.

Description of reference numerals: the valve comprises a valve body-1, a valve clack-2, a sealing block-21, a nut-3, a spring II-31, a split pin-4, a rocker-5, a spherical bulge-51, a pin shaft-6, a support-7, an arc-shaped arm-71, a connecting plate-72, a middle head gasket-9, a double-headed bolt-10, a valve cover-11, a mounting plate-12, a limiting block-13, a hanging ring-14, a liquid inlet cavity-15, a liquid outlet cavity-16, a buffer device-8, a connecting rod-81, a ball head-82, a baffle-83 and a spring I-84.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

The present application is further described with reference to fig. 1-5, which illustrate a swing check valve as shown in fig. 1, comprising: a valve body 1, a valve cover 11 and a valve clack 2, wherein the valve cover 11 is connected with the upper end of the valve body 1 through a stud bolt 10, the two ends of the stud bolt 10 are both connected with nuts 3, the inner wall of the valve body 1 is provided with a bracket 7, the lower end of the bracket 7 is hinged with a rocker 5 through a pin shaft 6, the rocker 5 is connected on a connecting column at one end of the valve clack 2, the left side and the right side of the valve body 1 are respectively provided with a liquid inlet cavity 15 and a liquid outlet cavity 16, the other end of the valve clack 2 is provided with a sealing block 21 which is blocked at the outlet end of the liquid inlet cavity 15, the inner wall of the valve body 1 is also provided with a mounting plate 12, the mounting plate 12 is provided with a buffer device 8 for slowing down the motion impact of the rocker 5, the buffer device 8 can effectively alleviate the impact when the rocker 5 swings, so that the impact vibration to the valve clack 2 is reduced, and the service life is prolonged.

A middle head gasket 9 is arranged between the valve body 1 and the valve cover 11, and the sealing property in the valve body 1 is ensured.

As shown in fig. 2, the buffering device 8 includes a connecting rod 81, a ball 82, a baffle 83 and a first spring 84, the connecting rod 81 is slidably disposed in the mounting plate 12, the ball 82 is connected to the lower end of the connecting rod 81, the baffle 83 is connected to the upper end of the connecting rod 81, the first spring 84 is sleeved on the connecting rod 81, and two ends of the first spring 84 respectively abut against between the mounting plate 12 and the ball 82.

As shown in fig. 1, the middle part of the rocker 5 is sleeved on a connecting column at one end of the valve clack 2, a nut 3 abutting against one side of the rocker 5 is arranged on the connecting column, and a cotter pin 4 is further arranged on the connecting column and used for preventing the nut 3 from loosening and falling off due to vibration under the impact of a medium.

When the rocker 5 swings, the connecting column is in contact with the ball head 82, so that the connecting rod 81 is pushed to slide upwards in the mounting plate 12, the impact force of the valve clack 2 is relieved, and on the other hand, the valve clack 2 is favorable to swing downwards to close under the action of the elastic force of the spring 84.

An expansion part is arranged on a connecting column at one end of the valve clack 2, the middle part of the rocker 5 is sleeved on the expansion part, and firm installation is formed through the matching between the arc-shaped outer contour of the expansion part and the inner wall of the through hole of the rocker 5 and a tensioning gap, so that the valve clack 2 is prevented from rotating to damage the sealing block 21 in the opening or closing process of the valve clack 2.

The lower end of the rocker 5 is provided with a spherical bulge 51, and the arrangement of the spherical bulge 51 increases the weight of the lower end of the rocker 5, so that the moment when the rocker 5 swings is larger, the rocker 5 is favorable for driving the valve clack 2 to abut against the outlet end of the liquid inlet cavity 15, and the sealing pressure of the sealing block 21 is further increased.

As shown in fig. 3, 4 and 5, the bracket 7 includes a connecting plate 72 and a pair of arc arms 71 connected to both sides of the lower end of the connecting plate 72, the connecting plate 72 is connected to the inner wall of the valve body 1, and the upper end of the rocker 5 is pivotally connected between the pair of arc arms 71.

As shown in fig. 1, the inner wall of the valve body 1 is further provided with a limit block 13 for limiting the swing highest position of the rocker 5, so that the phenomenon that the valve clack 2 cannot be driven to be closed smoothly due to too large swing amplitude of the rocker 5 can be effectively avoided.

The lower end of the limiting block 13 is fixedly connected with a spring II 31, when the rocker 5 swings, the spherical bulge 51 is in contact with the spring II 31, impact and vibration when the rocker 5 impacts the limiting block 13 are further alleviated, the service life of the whole valve clack is prolonged, meanwhile, the spring II 31 is beneficial for the rocker 5 to drive the valve clack 2 to swing downwards, and when the pressure of the liquid inlet cavity 15 is reduced, the valve clack 2 can smoothly swing downwards.

The top end of the valve cover 11 is connected with a lifting ring 14, so that the lifting is convenient.

When the valve is used, the rocker 5 drives the valve clack 2 to be opened or closed, after a medium enters from the liquid inlet cavity 15, the rocker 5 drives the valve clack 2 to swing upwards, and when the rocker 5 swings to the connecting column and is in contact with the ball head 82, the spring I84 is compressed, so that part of kinetic energy of the upward swing of the rocker 5 is converted into kinetic energy of the movement of the ball head 82 and the connecting rod 81 and elastic potential energy of the compression of the spring I84, and therefore impact vibration of the rocker 5 driving the valve clack 2 to move is reduced, and the valve body 1 and the valve clack 2 are protected.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A swing check valve comprising: valve body (1), valve gap (11) and valve clack (2), its characterized in that, valve gap (11) are connected through stud (10) the upper end of valve body (1), be provided with support (7) on the inner wall of valve body (1), the lower extreme of support (7) articulates through round pin axle (6) has rocker (5), rocker (5) are connected on the spliced pole of valve clack (2) one end, the left and right sides of valve body (1) is provided with feed liquor chamber (15) and goes out liquid chamber (16) respectively, the other end of valve clack (2) has and keeps off sealed piece (21) of the exit end in feed liquor chamber (15), still be provided with mounting panel (12) on the inner wall of valve body (1), be provided with on mounting panel (12) and be used for slowing down buffer (8) that rocker (5) motion was strikeed.

2. The swing check valve according to claim 1, wherein the buffering device (8) comprises a connecting rod (81), a ball head (82), a baffle (83) and a first spring (84), the connecting rod (81) is slidably disposed in the mounting plate (12), the ball head (82) is connected to the lower end of the connecting rod (81), the baffle (83) is connected to the upper end of the connecting rod (81), the first spring (84) is sleeved on the connecting rod (81), and two ends of the first spring (84) respectively abut against between the mounting plate (12) and the ball head (82).

3. The swing check valve according to claim 2, wherein the middle part of the rocker (5) is sleeved on a connecting column at one end of the valve clack (2), a nut (3) which is blocked at one side of the rocker (5) is arranged on the connecting column, and the connecting column is in contact with the ball head (82) when the rocker (5) swings.

4. Swing check valve according to claim 3, characterized in that the lower end of the rocker (5) is provided with a spherical protrusion (51).

5. The swing check valve according to claim 4, wherein the bracket (7) comprises a connecting plate (72) and a pair of arc-shaped arms (71) connected to both sides of the lower end of the connecting plate (72), the connecting plate (72) is connected to the inner wall of the valve body (1), and the upper end of the rocker (5) is pivoted between the pair of arc-shaped arms (71).

6. The swing check valve according to claim 5, characterized in that a limiting block (13) for limiting the swing highest position of the rocker (5) is further arranged on the inner wall of the valve body (1), a second spring (31) is fixedly connected to the lower end of the limiting block (13), and the spherical protrusion (51) is in contact with the second spring (31) when the rocker (5) swings.

7. The swing check valve according to claim 1, wherein a lifting ring (14) is connected to the top end of the valve cover (11).