Butterfly valve convenient to install

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve convenient to install, which comprises a main body, an air bag and a pipeline, the main body comprises a valve body, a sealing ring is fixedly connected to the inner wall of the valve body, first connecting flanges are fixedly connected to two sides of the valve body, the air bag is fixedly connected to the middle of one side of a baffle, and the pipeline is fixedly connected to the air bag. The top of the valve body is fixedly connected with a driving device, the baffle is located in an inner cavity of the valve body, the outer side of the baffle is tightly attached to the inner wall of the sealing ring, the pipelines are located on the two sides of the valve body, and the ends, close to the valve body, of the pipelines are fixedly connected with second connecting flanges. The air bag is arranged, so that the sealing performance of the main body is further enhanced, and the main body operates more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve which is easy to install. Background Art

[0002] The butterfly valve, also known as the flap valve, is a simple regulating valve that can be used for the on-off control of low-pressure pipeline media. The butterfly valve refers to a valve whose closing part (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing. The valve can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays a role of cutting off and throttling on the pipeline. The opening and closing part of the butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening, closing or regulating.

[0003] A large number of screw holes are opened on the connecting flanges on both sides of the existing butterfly valve, and workers are required to use a large number of fasteners (studs, bolts) for fixing, which increases the workload of workers and is inconvenient for workers to install and disassemble the butterfly valve; and the existing butterfly valve has only one layer of sealing device, that is, the sealing ring on the inner wall of the butterfly valve working chamber. Over time, the sealing ring ages and hardens, so that a gap is generated between the baffle and the sealing ring in the butterfly valve working chamber, thereby reducing the sealing performance of the butterfly valve. Utility Model Content

[0004] In view of the above problems existing in the prior art, a butterfly valve which is easy to install is provided.

[0005] The specific technical solutions are as follows:

[0006] A butterfly valve which is easy to install is designed, comprising a main body, an airbag and a pipeline, the main body comprising a valve body, a sealing ring is fixedly connected to the inner wall of the valve body, first connecting flanges are fixedly connected to both sides of the valve body, the airbag is fixedly connected to the center of one side of a baffle, a driving device is fixedly connected to the top of the valve body, the baffle is located in the inner cavity of the valve body and the outer side is tightly attached to the inner wall of the sealing ring, the pipeline is located on both sides of the valve body, and a second connecting flange is fixedly connected to one end of the pipeline close to the valve body.

[0007] Preferably, an air guiding cavity is provided in the inner cavity of the baffle and is in an inverted L-shape, and one end of the air guiding cavity is connected to the airbag.

[0008] Preferably, one end of the air guide cavity away from the airbag is connected to a connecting block, and the connecting block is fixedly connected to the bottom of the baffle and passes through the bottom of the valve body.

[0009] Preferably, four positioning blocks are fixedly connected to a side of the first connecting flange away from the valve body, and the positioning blocks are embedded in positioning grooves. The positioning grooves are provided on a side of the second connecting flange close to the valve body.

[0010] Preferably, the second connecting flange is provided with studs, the studs correspond one-to-one to the positioning blocks and penetrate the first connecting flange and the second connecting flange, and the studs are T-shaped.

[0011] Preferably, a bolt is threadedly connected on one end of the stud away from the second connecting flange.

[0012] Preferably, an air pump is provided at the bottom of the valve body, and the output end of the air pump is connected to the input end of the connecting block through a fastener.

[0013] The above technical solution has the following advantages or beneficial effects:

[0014] 1. Make the positioning block on the first connecting flange embed into the positioning groove on the second connecting flange, so as to facilitate the positioning of the main body on the pipeline. Then the worker uses the stud to penetrate the first connecting flange and the second connecting flange in turn, and the bolt is threadedly connected to the end of the stud extending from the second connecting flange. Turn the bolt clockwise until one side of the bolt is close to the second connecting flange, so as to fix the main body on the pipeline, thereby completing the installation of the main body; there are only four sets of studs and bolts connecting the main body and the pipeline. Reducing the number of studs and bolts facilitates the workers to install the main body faster, which can speed up the installation of the workers;

[0015] 2. When the main body is closed by the driving device, the outer side of the baffle is close to the sealing ring on the inner wall of the valve body, and then the air pump starts to operate, sucking air into the airbag through the air guide cavity, so that the airbag swells and expands the sealing ring on the inner wall of the valve body. The airbag is provided to further enhance the sealing of the main body and make the operation of the main body more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The embodiments of the present invention will be described more fully with reference to the attached drawings, which are however only used for illustration and description and are not intended to limit the scope of the present invention.

[0017] Figure 1 This is a structural schematic diagram of a butterfly valve that is easy to install proposed by the utility model;

[0018] Figure 2 This is a structural cross-sectional view of a butterfly valve that is easy to install proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the positioning groove of a butterfly valve that is easy to install proposed by the utility model;

[0020] Figure 4The utility model provides a structural schematic diagram of an airbag in a butterfly valve which is easy to install.

[0021] The above-mentioned figure numerals represent: 1. main body; 10. sealing ring; 11. valve body; 12. first connecting flange; 13. positioning block; 14. driving device; 15. baffle; 2. air bag; 21. air guide cavity; 22. connecting block; 23. air pump; 3. pipeline; 31. second connecting flange; 32. positioning groove; 33. stud; 34. bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0025] Reference Figure 1-4 A butterfly valve that is easy to install includes a main body 1, an airbag 2 and a pipeline 3. The main body 1 includes a valve body 11. A sealing ring 10 is fixedly connected to the inner wall of the valve body 11. First connecting flanges 12 are fixedly connected to both sides of the valve body 11. The airbag 2 is fixedly connected to the center of one side of a baffle 15. A driving device 14 is fixedly connected to the top of the valve body 11. The baffle 15 is located in the inner cavity of the valve body 11 and the outer side is tightly attached to the inner wall of the sealing ring 10. The pipeline 3 is located on both sides of the valve body 11. One end of the pipeline 3 close to the valve body 11 is fixedly connected to a second connecting flange 31; the main body is a butterfly valve device.

[0026] Furthermore, the inner cavity of the baffle 15 is provided with an air guide cavity 21 in an inverted L shape, and one end of the air guide cavity 21 is connected to the airbag 2; the airbag 2 is provided to further enhance the sealing performance of the main body 1, so that the main body 1 can run more stably.

[0027] Furthermore, one end of the air guide cavity 21 away from the airbag 2 is connected to the connecting block 22 , and the connecting block 22 is fixedly connected to the bottom of the baffle 15 and passes through the bottom of the valve body 11 ; the air guide cavity 2 is provided to facilitate the introduction of gas into the airbag 2 .

[0028] Furthermore, four positioning blocks 13 are fixedly connected to the side of the first connecting flange 12 away from the valve body 11, and the positioning blocks 13 are embedded in the positioning grooves 32. The positioning grooves 32 are arranged on the side of the second connecting flange 31 close to the valve body 11; the positioning blocks 13 on the first connecting flange 12 are embedded in the positioning grooves 32 on the second connecting flange 31, so as to facilitate the positioning of the main body 1 on the pipeline 3.

[0029] Furthermore, studs 33 are provided on the second connecting flange 31. The studs 33 correspond to the positioning blocks 13 one by one and penetrate the first connecting flange 12 and the second connecting flange 31. The studs 33 are T-shaped. The heads of the studs 33 and the bolts 34 are pentagonal in shape as a whole, which is convenient for workers to install and remove.

[0030] Furthermore, a bolt 34 is threadedly connected to one end of the stud 33 away from the second connection flange 31 ; the bolt 34 is provided to facilitate positioning of an object on the stud 33 .

[0031] Furthermore, an air pump 23 is provided at the bottom of the valve body 11 , and the output end of the air pump 23 is connected to the input end of the connecting block 22 through a fastener; the air pump 23 is provided to facilitate the absorption of air and the injection into the airbag 2 .

[0032] Working principle: When using this device, the positioning block 13 on the first connecting flange 12 is embedded in the positioning groove 32 on the second connecting flange 31, so as to facilitate the positioning of the main body 1 on the pipe 3. Then the worker uses the stud 33 to penetrate the first connecting flange 12 and the second connecting flange 31 in sequence, and the bolt 34 is threadedly connected to the end of the stud 33 extending from the second connecting flange 31, and the bolt 34 is turned clockwise until one side of the bolt 34 is close to the second connecting flange 31, so that the main body 1 is fixed on the pipe 3, thereby completing the installation of the main body 1; when the main body 1 is closed by the driving device 14, the outer side of the baffle 15 is close to the sealing ring 10 on the inner wall of the valve body 11, and then the air pump 23 is operated to suck air into the air bag 2 through the air guide cavity 21, so that the air bag 2 swells and tightens the sealing ring 10 on the inner wall of the valve body 11. The provision of the air bag 2 facilitates further strengthening the sealing of the main body 1, so that the operation of the main body 1 is more stable.

[0033] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A butterfly valve that is easy to install, characterized in that: The invention comprises a main body (1), an air bag (2) and a pipe (3), wherein the main body (1) comprises a valve body (11), a sealing ring (10) is fixedly connected to the inner wall of the valve body (11), first connecting flanges (12) are fixedly connected to both sides of the valve body (11), the air bag (2) is fixedly connected to the center of one side of a baffle (15), a driving device (14) is fixedly connected to the top of the valve body (11), the baffle (15) is located in the inner cavity of the valve body (11) and the outer side is tightly attached to the inner wall of the sealing ring (10), the pipe (3) is located on both sides of the valve body (11), and one end of the pipe (3) close to the valve body (11) is fixedly connected to a second connecting flange (31).

2. A butterfly valve that is easy to install according to claim 1, characterized in that: The inner cavity of the baffle (15) is provided with an air guide cavity (21) in an inverted L shape, and one end of the air guide cavity (21) is connected to the air bag (2).

3. A butterfly valve that is easy to install according to claim 2, characterized in that: One end of the air guide cavity (21) away from the air bag (2) is connected to a connection block (22); the connection block (22) is fixedly connected to the bottom of the baffle (15) and passes through the bottom of the valve body (11).

4. The butterfly valve that is easy to install according to claim 1 is characterized in that: Four positioning blocks (13) are fixedly connected to a side of the first connecting flange (12) away from the valve body (11); the positioning blocks (13) are embedded in positioning grooves (32); and the positioning grooves (32) are provided on a side of the second connecting flange (31) close to the valve body (11).

5. The butterfly valve that is easy to install according to claim 4 is characterized in that: The second connecting flange (31) is provided with a stud (33), the studs (33) correspond one-to-one to the positioning blocks (13) and penetrate the first connecting flange (12) and the second connecting flange (31), and the studs (33) are T-shaped.

6. The butterfly valve that is easy to install according to claim 5, characterized in that: A bolt (34) is threadedly connected to one end of the stud (33) away from the second connecting flange (31).

7. The butterfly valve that is easy to install according to claim 3 is characterized by: An air pump (23) is provided at the bottom of the valve body (11), and the output end of the air pump (23) is connected to the input end of the connection block (22) via a fastener.

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