CN220581753U - Swing check valve - Google Patents

Abstract

The utility model relates to the technical field of check valves and discloses a swing check valve, which comprises a valve main body, wherein one end of the valve main body is provided with a water inlet, one end of the valve main body, which is far away from the water inlet, is provided with a water outlet, two left flanges are fixedly connected to the water inlet, a filter screen is placed between the two left flanges, a communicating pipe is fixedly connected to the side wall surface of the filter screen, which is positioned on the inner cavity of the valve main body, sliding grooves are formed in the two side wall surfaces of one end, which is close to the water outlet, of the inner cavity of the communicating pipe, a cross rod is slidingly connected to the inner cavity of the sliding groove, a connecting rod is fixedly connected to the center position of the side wall surface of the cross rod, which is far away from the water outlet, and one end of the connecting rod is fixedly connected with a plugging hemisphere. According to the utility model, under the action of water flow, the blocking hemisphere extends out, the water flow flows out from the water outlet, and when liquid reversely flows in from the water outlet, the blocking hemisphere wraps one end of the communicating pipe due to the reverse action of the liquid, so that the liquid cannot flow back.

Description

Swing check valve

Technical Field

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

Background

The check valve is a valve with a circular valve clack and blocking medium backflow by means of self weight and medium pressure, and belongs to automatic valves.

However, in actual use, the existing check valve has a wider application range, and because the pressure of water flow in the check valve is larger in use, water flow backflow can occur, so that water pollution is caused, and the normal use of the check valve is affected.

To this end we propose a swing check valve.

Disclosure of Invention

The utility model mainly solves the technical problems in the prior art and provides a swing check valve.

In order to achieve the above purpose, the swing check valve comprises a valve main body, wherein one end of the valve main body is provided with a water inlet, one end of the valve main body, which is far away from the water inlet, is provided with a water outlet, the water inlet is fixedly connected with two left flanges, a filter screen is placed between the two left flanges, an inner cavity of the valve main body is positioned on the side wall surface of the filter screen and is fixedly connected with a communicating pipe, two side wall surfaces of one end, which is close to the water outlet, of the inner cavity of the communicating pipe are respectively provided with a sliding groove, the inner cavity of the sliding groove is slidingly connected with a cross rod, the center position, which is far away from the side wall surface of the water outlet, of the cross rod is fixedly connected with a connecting rod, and one end of the connecting rod is fixedly connected with a plugging hemisphere.

Preferably, a handle is fixedly arranged at the top of the filter screen.

Preferably, the right flange plate is fixedly arranged at the water outlet position.

Preferably, the handle is of a "U" shaped configuration.

Preferably, the two left flanges are fixed by bolts.

Advantageous effects

The utility model provides a swing check valve. The beneficial effects are as follows:

(1) According to the swing check valve, under the action of water flow, the sealing hemisphere extends out, the water flow flows out from the water outlet, when liquid reversely flows in from the water outlet, due to the reverse action of the liquid, one end of the communicating pipe is wrapped by the sealing hemisphere, and therefore the liquid cannot flow back.

(2) According to the swing check valve, only the bolts are required to be unscrewed to separate the two left flange plates, and meanwhile, the filter screen and the communicating pipe can be cleaned, so that the swing check valve is convenient to replace, can be used continuously, and saves resources.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments can be derived from the drawings provided without the inventive effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.

FIG. 1 is a schematic perspective view of the structure of the present utility model;

FIG. 2 is a schematic diagram of the valve body cavity plugging hemisphere opening of the present utility model;

FIG. 3 is a schematic view of the closing of the inner cavity plugging hemisphere of the valve body of the present utility model.

Legend description:

1. a valve body; 2. a water inlet position; 3. a water outlet; 4. a left flange plate; 5. a right flange; 6. a bolt; 7. a filter screen; 8. a handle; 9. plugging the hemisphere; 10. a communicating pipe; 11. a chute; 12. a cross bar; 13. and (5) connecting a rod.

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.

Examples: a swing check valve, as shown in figures 1-3, comprises a valve body 1, wherein one end of the valve body 1 is provided with a water inlet 2, and one end of the valve body 1, which is far away from the water inlet 2, is provided with a water outlet 3.

The utility model discloses a water inlet 2 department has placed filter screen 7 through bolt 6 fixedly connected with two left ring flanges 4 in the centre of two left ring flanges 4, filter screen 7 can filter water, the fixed handle 8 that is equipped with "U" type structure in top of filter screen 7, water outlet 3 departments are fixed and are equipped with right ring flange 5, valve main part 1 inner chamber is located the lateral wall face of filter screen 7 and is fixedly connected with communicating pipe 10, spout 11 has all been seted up on two lateral wall faces of the one end that communicating pipe 10 inner chamber is close to water outlet 3, spout 11 inner chamber sliding connection has horizontal pole 12, the central point that horizontal pole 12 kept away from water outlet 3 lateral wall face puts fixedly connected with connecting rod 13, the one end fixedly connected with shutoff hemisphere 9, the one end parcel of communicating pipe 10 can be lived to the inner chamber of shutoff hemisphere 9.

The working principle of the utility model is as follows:

when the liquid filtering device is used, liquid is filtered through the left flange 4, the filtered liquid flows through the inner cavity of the communicating pipe 10, the sealing hemisphere 9 stretches out under the action of water flow, as shown in the state of fig. 2, water flows out from the water outlet 3, when the liquid reversely flows in from the water outlet 3, one end of the communicating pipe 10 is wrapped by the sealing hemisphere 9 due to the reverse action of the liquid, as shown in the state of fig. 3, and the liquid cannot flow back.

When the filter screen 7 is dirty, the two left flange plates 4 are separated only by unscrewing the bolts 6, and the filter screen 7 and the communicating pipe 10 can be cleaned, so that the filter screen is convenient to replace, the filter screen can be used continuously, and resources are saved.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (5)

1. A swing check valve comprising a valve body (1), characterized in that: one end of valve main part (1) is equipped with into water department (2), and one end that water department (2) was kept away from to valve main part (1) is equipped with out water department (3), two left ring flange (4) of water department (2) fixedly connected with, two filter screen (7) have been placed in the centre of left ring flange (4), valve main part (1) inner chamber is located fixedly connected with communicating pipe (10) on the lateral wall of filter screen (7), has all seted up spout (11) on two lateral wall of the one end that communicating pipe (10) inner chamber is close to out water department (3), spout (11) inner chamber sliding connection has horizontal pole (12), and center position fixedly connected with connecting rod (13) of water department (3) lateral wall are kept away from to horizontal pole (12), and the one end fixedly connected with shutoff hemisphere (9) of connecting rod (13).

2. A swing check valve according to claim 1, wherein: the top of the filter screen (7) is fixedly provided with a handle (8).

3. A swing check valve according to claim 1, wherein: the water outlet (3) is fixedly provided with a right flange plate (5).

4. A swing check valve according to claim 2, wherein: the handle (8) is of a U-shaped structure.

5. A swing check valve according to claim 1, wherein: the two left flanges (4) are fixed through bolts (6).