CN207213286U - A kind of baffle speed closed type check valve - Google Patents

Abstract

The utility model discloses a fluid diversion speed closed check valve, which comprises a valve body, a valve cover, a cavity, a water inlet, a water outlet, a diversion body, a valve disc, a sealing ring, a connecting body, a rotating wheel, a rocker arm, Compress the spring, the fixed block and the buffer pad. By setting the rotating wheel, the rocker arm and the sealing ring in the cavity, when the water delivery is stopped, the rocker arm moves downward under the action of gravity, and rotates along the rotating wheel to drive the sealing ring to seal the water inlet. , to avoid water backflow; and then set a compression spring in the cavity. When water is delivered, the impulse of the water inlet compresses the compression spring, so that the water enters. When the water delivery stops, the pressure of the water inlet drops sharply, and the compression spring returns quickly Then, the rocker arm will be quickly dropped, and then the sealing ring will be driven to seal, and the compression spring will be compressed, which can make the sealing ring tight and avoid water backflow; then set a buffer pad on the sealing ring, and when the sealing ring is quickly sealed, the buffer The pad acts as a buffer to protect the sealing ring and prevent the sealing ring from being damaged.

Description

A diversion fluid velocity closed check valve

technical field

The utility model relates to a check valve, in particular to a fluid-guiding closed check valve.

Background technique

In the drainage pipeline, in order to prevent the "water hammer" caused by the sudden backflow of the fluid in the pipeline when the pump is stopped or the power is suddenly cut off from causing damage to the equipment, a fast-closing check is usually installed on the water pump outlet pipeline. valve. Existing quick-closing check valves are not effective in eliminating "water hammer". When the pump is stopped or the power is suddenly cut off, the backflow of the medium lasts for a long time, and it is easy to cause damage to the water pump when the pipeline pressure is high.

Utility model content

The utility model provides a fluid-conducting quick-closing check valve, which solves the problem that the existing quick-closing check valve has an unsatisfactory effect of eliminating "water hammer". Long, it is easy to cause damage to the pump under the condition of high pipeline pressure.

In order to solve the above technical problems, the utility model provides the following technical solutions:

The utility model is a flow-guiding quick-closing check valve, which comprises a valve body and a valve cover. A cavity is formed between the valve body and the valve cover, and the section of the cavity is convex. The cavity A water inlet and a water outlet are respectively opened at both symmetrical ends of the water inlet, and a guide body is fixed in the water inlet, and a valve disc is fixed at the corner of the end cavity of the guide body, and is installed on the inner wall of the cavity close to the valve cover. There is a rotating wheel, and a rocker arm is connected to the rotating wheel. A sealing ring is fixed on the side of the rocker arm close to the valve disc. The section of the sealing ring is convex, and the outer edge of the sealing ring is fixed. There is a circle of buffer pads, a compression spring is fixed at the corner near the water outlet in the cavity, and the end of the compression spring is fixed on the rocker arm.

As a preferred technical solution of the utility model, the valve cover is fixedly connected with the valve body through bolts.

As a preferred technical solution of the utility model, the sealing ring is welded on the rocker arm through a connecting body.

As a preferred technical solution of the present invention, the diameter of the sealing ring is larger than that of the valve disc.

As a preferred technical solution of the present invention, the compression spring is fixed on the inner wall of the cavity through a fixing block.

As a preferred technical solution of the utility model, the sealing ring and the buffer pad are combined into a cylinder.

The beneficial effects achieved by the utility model are: by setting the rotary wheel, the rocker arm and the sealing ring in the cavity, when the water delivery is stopped, the rocker arm moves downward under the action of gravity, and the rotation of the rotary wheel drives the sealing ring to seal and enter Water inlet to avoid water backflow; and a compression spring is set in the cavity. When water is delivered, the momentum of the water inlet compresses the compression spring, so that water enters. When the water delivery stops, the pressure of the water inlet drops sharply, and the compression spring quickly Rebound, so as to drive the rocker arm to fall quickly, and then drive the sealing ring to seal, and the compression spring is compressed, which can make the sealing ring tight and prevent water from flowing back; then set a buffer pad on the sealing ring, when the sealing ring is quickly sealed, The buffer pad acts as a buffer to protect the sealing ring and prevent the sealing ring from being damaged.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model.

In the attached picture:

Fig. 1 is the overall structural diagram of a kind of diversion velocity closed check valve of the utility model;

In the figure: 1. valve body; 2. valve cover; 3. cavity; 4. water inlet; 5. water outlet; Rotary wheel; 11, rocker arm; 12, compression spring; 13, fixed block; 14, buffer pad.

Detailed ways

The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

Embodiment: As shown in Figure 1, the utility model is a kind of diversion fluid velocity closed check valve, which includes a valve body 1 and a valve cover 2, and a cavity 3 is formed between the valve body 1 and the valve cover 2, which is convenient for water to enter Discharge again; and the cross-section of the cavity 3 is convex, the symmetrical ends of the cavity 3 are respectively provided with a water inlet 4 and a water outlet 5, and the water inlet 4 is fixed with a guide body 6, which can play a role in diversion The role of water transfer is convenient; the corner of the end cavity 3 of the guide body 6 is fixed with a valve flap 7, and the inner wall of the cavity 3 close to the valve cover 2 is equipped with a rotating wheel 10, which is convenient for the rocker arm 11 to rotate and move; A rocker arm 11 is connected to the rotating wheel 10, and a seal ring 8 is fixed on the side of the rocker arm 11 close to the valve disc 7. When the water delivery is stopped, the water inlet 4 can be sealed and closed by the seal ring 8 to avoid water backflow; The cross-section of the sealing ring 8 is set in a convex shape, which is convenient for fixing the ring-shaped buffer pad 14 on the outer edge of the protruding part, so that the sealing ring 8 and the buffer pad 14 are combined into a cylindrical shape; and the sealing ring 8 There is a circle of buffer pad 14 fixed on the outer edge, which can play a certain buffering effect, thereby reducing the shock feeling felt by the seal ring 8 and the rocker arm 11, and avoiding damage to the seal ring 8 and the rocker arm 11; A compression spring 12 is fixed at the corner, so that the compression spring 12 can be pressed against the rocker arm 11. When the water delivery is stopped, the compression spring 12 can quickly drive the rocker arm 11 down, thereby sealing the sealing ring 8 and speeding up the sealing speed. and the end of the compression spring 12 is fixed on the rocker arm 11.

The valve cover 2 is fixedly connected with the valve body 1 through bolts.

The sealing ring 8 is welded on the rocker arm 11 through the connecting body 9 .

The diameter of the sealing ring 8 is larger than the diameter of the valve flap 7 .

The compression spring 12 is fixed on the inner wall of the cavity 3 through the fixing block 13 .

The sealing ring 8 and the buffer pad 14 are combined into a cylinder.

This kind of diversion flow rate closed check valve, by setting the rotating wheel 10, the rocker arm 11 and the sealing ring 8 in the cavity 3, when the water delivery is stopped, the rocker arm 11 moves downward under the action of gravity, along the rotation direction. The wheel 10 rotates to drive the sealing ring 8 to seal the water inlet 4 to avoid water backflow; and a compression spring 12 is set in the cavity 3. When the water is delivered, the impulse of the water inlet 4 compresses the compression spring 12, so that the water enters. When the water delivery is stopped, the water inlet pressure drops sharply, and the compression spring 12 quickly rebounds, thereby driving the rocker arm 11 to fall rapidly, and then driving the sealing ring 8 to seal, and the compression spring 12 is compressed, so that the sealing ring 8 can be sealed tightly, and the sealing ring 8 can be sealed tightly. Avoid water backflow; then set a buffer pad 14 on the sealing ring 8. When the sealing ring 8 is quickly sealed, the buffer pad 14 plays a buffer role, which can protect the sealing ring 8 and prevent the sealing ring 8 from being damaged.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (6)

1. a kind of baffle speed closed type check valve, including valve body（1）And bonnet（2）, it is characterised in that the valve body（1）And valve Lid（2）Between form cavity（3）, and the cavity（3）Section be convex set, the cavity（3）Symmetrical both ends point Water inlet is not offered（4）And delivery port（5）, the water inlet（4）Inside it is fixed with baffle（6）, the baffle（6）End Hold cavity（3）Corner be fixed with flap（7）, close to bonnet（2）Cavity（3）Inwall on rotating wheel is installed（10）, The rotating wheel（10）On be connected with rocking arm（11）, the rocking arm（11）Lower section close to flap（7）Side be fixed with sealing ring （8）, the sealing ring（8）Section be that convex is set, and the sealing ring（8）Outer edge be fixed with a circle cushion pad （14）, the cavity（3）Interior close delivery port（5）Corner be fixed with compression spring（12）, and the compression spring（12）'s End is fixed on rocking arm（11）On.

A kind of 2. baffle speed closed type check valve according to claim 1, it is characterised in that the bonnet（2）Pass through spiral shell Bolt and valve body（1）It is fixedly connected.

A kind of 3. baffle speed closed type check valve according to claim 1, it is characterised in that the sealing ring（8）Pass through Connector（9）It is welded on rocking arm（11）On.

A kind of 4. baffle speed closed type check valve according to claim 1, it is characterised in that the sealing ring（8）It is straight Footpath is more than flap（7）Diameter.

A kind of 5. baffle speed closed type check valve according to claim 1, it is characterised in that the compression spring（12）It is logical Cross fixed block（13）It is fixed on cavity（3）Inwall on.

A kind of 6. baffle speed closed type check valve according to claim 1, it is characterised in that the sealing ring（8）It is gentle Punching pad（14）It is combined into cylinder.