CN221463011U

CN221463011U - Swing check valve

Info

Publication number: CN221463011U
Application number: CN202420100607.6U
Authority: CN
Inventors: 浑连海; 浑承霖
Original assignee: Hebei Qiancheng Valve Manufacturing Co ltd
Current assignee: Hebei Qiancheng Valve Manufacturing Co ltd
Priority date: 2024-01-16
Filing date: 2024-01-16
Publication date: 2024-08-02
Anticipated expiration: 2034-01-16

Abstract

The utility model discloses a swing check valve, which comprises a valve body, wherein a valve cover is arranged at the upper end position of the valve body, a valve clack arranged at the lower end position can be driven to open or close by a rocker arm, a limit column is arranged at the lower end position of the valve cover, when the valve clack is opened by fluid through flow velocity, the valve clack is pushed by a rocker arm connected with the valve body to drive the valve clack to open or close, in order to control the opening limit of the valve clack and prevent the valve clack from striking the inner wall of the valve body, the lower end of the valve cover is provided with a limit column, the limit column is used for limiting the movement range of the valve clack through the contact of the rocker arm with the valve clack when the valve clack reaches the maximum opening height, so that the valve clack can avoid collision damage possibly caused to the valve body, the rocker arm can be worn due to repeated striking of the limit column along with the time, and the rocker arm only needs to be replaced without replacing the whole valve body, thus the maintenance cost is reduced.

Description

Swing check valve

Technical Field

The utility model belongs to the technical field of swing check valves, and particularly relates to a swing check valve.

Background

The swing check valve is a valve for controlling the flow direction of fluid by rotating a valve clack, and can prevent the fluid from flowing backwards, namely, when the flow direction of the fluid is reversed, the valve clack can be automatically closed to prevent the fluid from flowing backwards, and the swing check valve is usually used in pipeline systems needing to prevent the backflow, such as water supply pipelines, drainage pipelines, chemical pipelines and the like.

When the traditional swing check valve is used, when the valve clack is opened to the maximum extent, the valve clack can strike the inner wall of the valve body, and the valve body can be damaged due to the fact that the inner wall of the valve body is very thin and the valve body is damaged due to long-time striking, so that the whole valve body needs to be replaced.

Disclosure of utility model

The utility model aims to provide a swing check valve, which solves the problems that when the swing check valve is used, a valve clack can strike the inner wall of a valve body when being opened to the maximum degree, the valve body is damaged after long-time striking due to the fact that the inner wall of the valve body is very thin, and the whole valve body needs to be replaced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a swing check valve, includes the valve body, the valve gap is installed to the upper end position department of valve body, the valve gap is installed with the valve body through the hexagonal bolt that is located inside position department, the lower extreme position department of valve gap is fixed with spacing post, the junction of valve gap and valve body is provided with rubber gasket, the valve body is connected with the pipeline through the flange that is located both ends position department about, the rocking arm is installed in inside position department to the valve body, the rocking arm can drive the valve clack of installing in lower extreme position department and open and close.

Preferably, the valve cover is connected with the valve body through a hexagonal bolt.

Preferably, the valve body causes an angular change in the valve flap as fluid enters the interior location.

Preferably, the larger the fluid flow velocity or flow rate inside the valve body, the larger the opening and closing angle of the valve clack.

Preferably, when the valve clack is opened or closed to touch the limit column, the valve clack indicates that the opening or closing is to the maximum extent, and the valve clack is opened in a full-diameter mode.

Preferably, the valve flap is angularly varied by a rocker arm.

Compared with the prior art, the utility model provides the swing check valve, which has the following beneficial effects:

1. The valve clack is opened through the flow speed to the fluid, the valve clack is pushed to open and close through the rocker arm connected with the valve clack, in order to control the opening limit of the valve clack or impact the inner wall of the valve body due to the large opening amplitude of the valve clack, the lower end of the valve clack is provided with a limiting column, the limiting column is used for limiting the opening degree of the valve clack through the contact of the rocker arm and the valve clack when the valve clack reaches the maximum opening height, so that impact damage to the valve body caused by the valve clack is avoided, the rocker arm can be worn due to repeated impact of the limiting column along with the time, the rocker arm is worn, only the rocker arm needs to be replaced, the whole valve body is not required to be replaced, and the maintenance cost is reduced.

2. The check valve in the device adopts a full-channel opening design, which means that the valve clack can be completely opened, and fluid can smoothly pass through the valve, so that the flow resistance of the fluid is reduced, the energy consumption of a system can be reduced, and the fluid transmission efficiency of a pipeline is improved.

Drawings

Fig. 1 is a schematic view of a swing check valve according to the present utility model.

Fig. 2 is a schematic front view of a swing check valve according to the present utility model.

Fig. 3 is a schematic view of the internal structure of a swing check valve according to the present utility model.

Fig. 4 is a schematic structural diagram of the working principle of the swing check valve clack of the present utility model.

In the figure: 1. a valve body; 2. a connecting flange; 3. a valve cover; 4. a valve flap; 5. a rocker arm; 6. a limit column; 7. a rubber gasket; 8. a hexagonal bolt.

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 provides a swing check valve as shown in figures 1-4, which comprises a valve body 1, wherein a valve cover 3 is arranged at the upper end position of the valve body 1, the valve cover 3 is arranged with the valve body 1 through a hexagon bolt 8 at the inner position, a limit post 6 is fixed at the lower end position of the valve cover 3, a rubber gasket 7 is arranged at the joint of the valve cover 3 and the valve body 1, the valve body 1 is connected with a pipeline through connecting flanges 2 at the left and right end positions, a rocker arm 5 is arranged at the inner position of the valve body 1, and the rocker arm 5 can drive a valve clack 4 arranged at the lower end position to open or close.

When fluid flows in from the inlet of the valve, the valve clack 4 can be pushed away by the pressure of the fluid, the valve is in an open state, the fluid can freely enter the pipeline system through the valve, when the fluid flows reversely from the outlet side of the valve, the valve clack 4 can be pushed to the valve seat by the pressure of the fluid, so that the valve is closed, the valve clack 4 is closed to prevent the reverse fluid from passing through, the non-return effect is achieved, the opening and closing principle of the swing check valve is that the valve clack 4 automatically acts by the pressure of the fluid and the self weight of the valve clack 4, the opening and closing mode of the valve clack 4 is rotary motion, and the inlet direction of the fluid is on the side capable of impacting the valve clack 4 to rotate.

As shown in fig. 3 and 4, the valve cover 3 is connected with the valve body 1 through a hexagonal bolt 8, when fluid enters the internal position, the valve body 1 makes the valve clack 4 generate angle change, the larger the fluid flow rate or flow rate in the valve body 1 is, the larger the opening and closing angle of the valve clack 4 is, the valve clack 4 indicates that the opening and closing are to the greatest extent when the valve clack 4 is opened and closed to touch the limit column 6, the valve clack 4 is opened in a full-path manner, and the valve clack 4 performs angle change through the rocker arm 5.

When the valve clack 4 is opened through the velocity of flow to the fluid, valve clack 4 opens through rocking arm 5, can strike spacing post 6 when making valve clack 4 open the biggest height, and spacing post 6 can be struck to rocking arm 5, and the existence of spacing post 6 can effectively avoid valve clack 4 striking valve body 1 inner wall, has reduced the damage to valve body 1, after the rocking arm strikes spacing post 6 for a long time, only need change rocking arm 5 can, need not to change whole valve body 1.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a swing check valve, its characterized in that, includes valve body (1), valve gap (3) are installed in upper end position department of valve body (1), valve gap (3) are installed with valve body (1) through hexagon bolt (8) that are located inside position department, the lower extreme position department of valve gap (3) is fixed with spacing post (6), the junction of valve gap (3) and valve body (1) is provided with rubber gasket (7), valve body (1) are connected with the pipeline through flange (2) that are located both ends position department about, rocking arm (5) are installed in inside position department to valve body (1), rocking arm (5) can drive valve clack (4) of installing in lower extreme position department and open or close.

2. A swing check valve according to claim 1, wherein: the valve cover (3) is connected with the valve body (1) through a hexagonal bolt (8).

3. A swing check valve according to claim 2, wherein: the valve body (1) causes an angular change of the valve flap (4) when fluid enters the interior position.

4. A swing check valve according to claim 3, wherein: the larger the fluid flow velocity or flow rate inside the valve body (1), the larger the opening and closing angle of the valve clack (4) is.

5. A swing check valve according to claim 4, wherein: when the valve clack (4) is opened and closed to touch the limit column (6), the valve clack (4) is opened with full-diameter, and the valve clack is indicated to be opened to the maximum extent.

6. A swing check valve according to claim 5, wherein: the valve clack (4) is subjected to angle change through a rocker arm (5).