CN212775762U - Gate valve with non-return function - Google Patents

Abstract

The utility model provides a gate valve with non-return function, comprising a valve body, a valve block, a valve rod, a hand wheel, a non-return ball and a non-return disc; import is equipped with gate valve storehouse, first non return storehouse, second non return storehouse in proper order to the export in the valve body 1, and valve body, valve rod setting are in the gate valve storehouse, and the check ball sets up in first non return storehouse, and the non return dish sets up in second non return storehouse, the utility model discloses a set up check ball, non return dish and carry out the secondary non return, can prevent the medium and flow back, the utility model discloses simple structure, convenient operation, furthest's assurance the demand that the medium flows, optimized the effect of opening and closing.

Description

Gate valve with non-return function

Technical Field

The utility model belongs to the technical field of the valve, especially, relate to a gate valve with non return function.

Technical Field

The gate valve is the most widely used valve, and the valve plate can move up and down in the opening and closing process, so that the gate valve is durable, simple to open, easy to manufacture and convenient to maintain, and is widely used. However, the gate valve has no non-return function, and when the gate valve is in an open state, the fluid in the outlet cavity may flow back and easily enter the upstream of the pipeline to cause pollution.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gate valve with non return function aims at solving the problem with high costs and the loaded down with trivial details scheduling problem of being under construction that uses gate valve and check valve to cause simultaneously among the prior art.

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

a gate valve with a non-return function comprises a valve body, a valve plate, a valve rod, a hand wheel, a non-return ball and a non-return disc;

a first non-return bin, a second non-return bin and a gate valve bin are arranged in the valve body; the gate valve bin, the first check bin and the second check bin are sequentially connected, wherein the gate valve bin is arranged at an inlet of the valve body, the first check bin is arranged at the upper part in the valve body, and the second check bin is arranged at an outlet of the valve body;

a valve plate and a valve rod are arranged in the gate valve bin; the lower end of the valve rod is fixedly connected to the upper end of the valve plate, and the upper end of the valve rod penetrates through the top of the valve body and is fixedly connected with the hand wheel; an extension ring is arranged at the bottom of the first check bin, and the check ball is arranged at the upper end of the extension ring; the second non-return bin is internally provided with the non-return disc and a spring, wherein the lower end of the spring is fixedly connected with the bottom of the valve body, and the upper end of the spring is fixedly connected with the non-return disc.

Preferably, a valve sheet groove matched with the valve sheet is arranged in the gate valve bin; the inlet side of the valve plate is provided with a sealing rubber pad; the upper end of the valve plate is provided with a protruding piece.

Further, the valve rod is provided with a thread layer; the top of the valve body is provided with a screw hole matched with the valve rod; the valve rod penetrates through the screw hole.

Preferably, a sealing screw is arranged at the top of the first check bin; the first non-return bin is provided with an internal thread matched with the sealing screw.

Furthermore, the check ball is arranged as an inner hollow ball and is made of metal materials, and a through hole is formed in one side of the second check bin at the lower end of the sealing screw; the diameter of the through hole is smaller than that of the check ball.

Preferably, the second check bin is provided with a second groove matched with the check disc; a first groove for limiting the check disc is further formed in the valve body; the first groove is disposed on the valve wall.

Further, the check disc is selected to be an inner hollow disc or a solid disc; the check disc is made of metal or plastic or rubber.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses the structure is comparatively simple, combines gate valve and check valve together, practices thrift the cost, has also reduced loaded down with trivial details installation.

2. The utility model discloses have dual non return function, the check ball passes through the gravity principle, and the check ball upward movement under the medium pressure strikes, and the medium is through flowing away, and under the condition that does not have the medium to strike, it is closed to rely on gravity, and the check dish can be opened rapidly under the medium pressure strikes, does not have under the condition that the medium strikes, relies on gravity closed, has guaranteed good opening and close nature.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic view of a gate valve with a non-return function according to an embodiment of the present invention.

Reference numerals: 1. the valve comprises a valve body, 2, a valve plate, 3, a valve wall, 4, a first groove, 5, a valve plate groove, 6, a valve rod, 7, a hand wheel, 8, a sealing screw, 9, an internal thread, 10, an extension ring, 11, a check ball, 12, a through hole, 13, a check disc, 14, a second groove, 15, a spring, 16, a first check bin, 17, a second check bin, 18, an inlet, 19, an outlet, 20, a gate valve bin, 21, a protruding piece, 22 and a screw hole.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, feature details such as specific configurations and components are provided only to help a full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.

The present invention will be described in detail with reference to the accompanying drawings 1 in conjunction with an embodiment.

A gate valve with a check function is shown in figure 1 and comprises a valve body 1, a valve plate 2, a valve rod 6, a hand wheel 7, a check ball 11 and a check disc 13;

the valve body 1 is internally provided with three areas which are a first non-return bin 16, a second non-return bin 17 and a gate valve bin 20; the medium flows through a gate valve bin 20, a first check bin 16 and a second check bin 17 from an inlet 18 to an outlet 19 in sequence, wherein the inlet 18 is connected with the gate valve bin 20, and the outlet 19 is connected with the second check bin 17; the gate valve chamber 20 and the second check chamber 17 are disposed at the lower portion in the valve body 1, and the first check chamber 16 is disposed at the upper portion in the valve body 1.

A valve plate 2, a valve plate groove 5 and a valve rod 6 are arranged in the gate valve bin 20; valve block 2 is used for sealing 18 imports, and under the sealed condition of 18 imports, valve block 2 inserts valve block groove 5, and wherein, the width of valve block 2 is a little less than the width of valve block groove 5, guarantees that valve block 2 can be sealed 18 completely to the imports. The top end of the valve plate 2 is also provided with a protruding piece 21 on one side close to the inlet 18, and when the valve plate 2 seals the inlet 18, the protruding piece 21 can further seal the inlet 18. The valve rod 6 is fixedly connected to the upper end of the valve plate 2 and penetrates through the upper part of the valve body 1 to be fixedly connected with the hand wheel 7, and the hand wheel 7 is used for controlling the valve plate 2 to move up and down.

Inside check ball 11 that sets up in first non return storehouse 16, the bottom in first non return storehouse 16 is equipped with extends ring 10, extend ring 10 and be used for preventing that check ball 11 from falling out first non return storehouse 16 and flow to gate valve storehouse 20 in, be equipped with through-hole 12 on the valve body 1 inner wall of gate valve storehouse 20 one side is kept away from in first non return storehouse 16, through-hole 12 is used for the circulation of medium, through-hole 12 can set up to the circular port, wherein, the diameter of extending ring 10, the diameter of through-hole 12 all is less than the diameter of check ball 11.

The second non-return bin 17 is provided with a non-return disc 13 and a spring 15, the lower end of the spring 15 is fixedly connected with the bottom of the valve body 1, the upper end of the spring 15 is fixedly connected with the non-return disc 13, wherein the number of the springs 15 can be one or more, under the condition that no medium flows, the springs 15 extend, and the non-return disc 13 and the second groove 14 form a sealing state.

In one embodiment, a valve sheet groove 5 matched with the valve sheet 2 is arranged in the gate valve bin 20, and the inlet 18 is sealed by the valve sheet 2 and the valve sheet groove 5; the side of the inlet 18 of the valve plate 2 is provided with a sealing rubber gasket, and the sealing rubber gasket is arranged to ensure that the sealing effect is better; the upper end of the valve plate 2 is also provided with a protruding piece 21.

Further, the valve rod 6 is provided with a thread layer; the top of the valve body 1 is provided with a screw hole 22 matched with the valve rod 6; the valve rod 6 penetrates through the screw hole 22 and is fixedly connected with the hand wheel 7, the sealing performance of the valve body 1 is guaranteed on one hand by the thread layer of the valve rod 6 and the screw hole 22, the height of the valve rod 6 can be adjusted by rotating the valve rod 6 on the other hand, and then the valve plate 2 is adjusted.

In one embodiment, the top of the first check bin 16 is provided with a sealing screw 8; first non return storehouse 16 be equipped with sealing screw 8 assorted internal thread 9, sealing screw 8 is demolishd to non return ball 11 accessible takes out, can regard as reserve non return mode non return ball 11, can dismantle when using at ordinary times, when spring 15 in the second non return storehouse 17 damages, when second non return storehouse 17 does not have the non return function, can install non return ball 11 in first non return storehouse 16 again, furthermore, non return ball 11 sets up to interior clean ball, adopt metal material, set up to interior clean ball, can reduce pressure and just can push away sealing screw 8 department with non return ball 11, guarantee that the medium can circulate.

In one embodiment, the second check chamber 17 is provided with a second groove 14 matched with the check disc 13, the check disc 13 is inserted into the second groove 14 to form a sealing state under the condition that the valve plate 2 is closed, and a first groove 4 for limiting the check disc 13 is further arranged in the valve body 1; the first recess 4 is provided in the valve wall 3 and the non-return disc 13 is selected to be an inner hollow disc or a solid disc, the material used being metal or plastic or rubber.

The utility model discloses the theory of operation: the gate valve with the non-return function is connected with a pipeline, a hand wheel 7 is rotated, the hand wheel 7 drives a valve rod 6 to rotate and drives the valve rod 6 to ascend, the valve rod 6 drives a valve plate 2 to ascend, an inlet 18 is opened, a medium flows in from the inlet, the medium flows into a gate valve bin 20 and then flows into a first non-return bin 16 from an extension ring 10, a non-return ball 11 is pushed to a sealing screw 8, the medium flows into a second non-return bin 17 from a through hole 12, under the impact of the medium, a spring 15 is compressed, a non-return disc 13 moves downwards, and the medium flows out from an outlet 19; when the backflow occurs in the pipeline, the spring 15 is stretched again, so that the check ball 11 and the second groove 14 form a sealing state, and the check ball 11 is contacted with the extension ring 10 again under the action of gravity and forms a check effect with the extension ring 10, so that the medium backflow is avoided.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (7)

1. A gate valve with a check function is characterized by comprising a valve body (1), a valve plate (2), a valve rod (6), a hand wheel (7), a check ball (11) and a check disc (13);

a first non-return bin (16), a second non-return bin (17) and a gate valve bin (20) are arranged in the valve body (1); the gate valve bin (20), the first check bin (16) and the second check bin (17) are sequentially connected, wherein the gate valve bin (20) is arranged at an inlet (18) of the valve body (1), the first check bin (16) is arranged at the inner upper part of the valve body (1), and the second check bin (17) is arranged at an outlet (19) of the valve body (1);

a valve plate (2) and a valve rod (6) are arranged in the gate valve bin (20); the lower end of the valve rod (6) is fixedly connected to the upper end of the valve plate (2), and the upper end of the valve rod (6) penetrates through the top of the valve body (1) and is fixedly connected with the hand wheel (7); an extension ring (10) is arranged at the bottom of the first check bin (16), and the check ball (11) is arranged at the upper end of the extension ring (10); be equipped with in second non return storehouse (17) non return dish (13) and spring (15), wherein, spring (15) lower extreme and valve body (1) bottom fixed connection, spring (15) upper end with non return dish (13) fixed connection.

2. The gate valve with a check function according to claim 1, wherein: a valve sheet groove (5) matched with the valve sheet (2) is arranged in the gate valve bin (20); a sealing rubber pad is arranged on the inlet (18) side of the valve plate (2); the upper end of the valve plate (2) is provided with a protruding piece (21).

3. A gate valve having a check function according to claim 2, wherein: the valve rod (6) is provided with a thread layer; the top of the valve body (1) is provided with a screw hole (22) matched with the valve rod (6); the valve rod (6) penetrates through the screw hole (22).

4. The gate valve with a check function according to claim 1, wherein: the top of the first non-return bin (16) is provided with a sealing screw (8); the first non-return bin (16) is provided with an internal thread (9) matched with the sealing screw (8).

5. The gate valve with a check function according to claim 4, wherein: the check ball (11) is an inner hollow ball and is made of metal materials.

6. The gate valve with a check function according to claim 1, wherein: the second non-return bin (17) is provided with a second groove (14) matched with the non-return disc (13); a first groove (4) for limiting the check disc (13) is further formed in the valve body (1); the first recess (4) is arranged in the valve wall (3).

7. The gate valve with a check function according to claim 6, wherein: the check disc (13) is selected to be an inner hollow disc or a solid disc; the check disc (13) is made of metal or plastic or rubber.

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