Butterfly valve capable of preventing deviation of sealing rubber ring

Abstract

The utility model discloses a butterfly valve capable of preventing a sealing rubber ring from deviating, which comprises a valve body, a valve plate is arranged in the valve body, and a sealing assembly for sealing the valve plate is arranged in the valve body. The sealing assembly comprises two sealing grooves formed in the valve body, sealing strips are arranged in the two sealing grooves, and the interiors of the sealing strips are fixedly connected with the interiors of the sealing strips. The sealing strip is mounted in the valve plate through the mounting plate, the fixing bolts and the nuts are matched to fix the mounting plate, the multiple fixing bolts enable the mounting plate to be mounted more stably, then the sealing strip is more stable, and the second sealing rings seal the connecting positions of the fixing bolts and the valve plate and the connecting positions of the nuts and the valve plate. And leakage at the joint of the fixing bolt and the nut and the valve plate is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve capable of preventing a sealing rubber ring from deflecting. Background Art

[0002] The butterfly valve with anti-slip seal is a special valve design that combines the advantages of butterfly valve and sealing technologies to provide better fluid control and prevent the slip of the seal. This butterfly valve uses a unique structural design to ensure that the seal maintains the correct position of the seal during operation, preventing slip due to external factors. It is widely used in various fluid systems such as gas, liquid, and steam. The valve design features a precise positioning mechanism to ensure that the seal fits tightly in the closed state, preventing fluid leakage. The special structural design and material selection effectively prevent the slip of the seal caused by external factors such as pressure and temperature. The valve material selection is extensive and can be selected according to different media and operating environments to ensure the long-term stable operation of the valve.

[0003] The prior art provides a butterfly valve (announcement number: CN215214777U) that is easy to maintain. The device includes a valve body and a valve stem, wherein a valve cavity is formed in the valve body, one end of the valve stem extends into the valve cavity, and a butterfly plate is arranged on the end of the valve stem extending into the valve cavity. The valve stem includes an upper valve stem and a lower valve stem, and the upper valve stem and the lower valve stem are both provided with clamping grooves. Both ends of the butterfly plate extend into corresponding clamping grooves and are connected to the upper valve stem and the lower valve stem, and the two ends of the butterfly plate extend into the clamping grooves of the upper valve stem and the lower valve stem, which can increase the contact area between the butterfly plate and the upper valve stem and the lower valve stem, and the butterfly plate is connected and fixed to the upper valve stem and the lower valve stem by an anti-bending part. When maintenance is required, it is only necessary to remove the pin shaft and disassemble the butterfly plate and the anti-bending part, which is convenient for disassembly and assembly, and the anti-bending part can prevent the valve stem and butterfly plate from deformation and bending caused by long-term erosion of the medium.

[0004] However, the device still has the following defects:

[0005] When the device is in use, the position of the sealing ring is prone to shift as the valve disc moves during the butterfly valve's use. The shift of the sealing ring will cause the butterfly valve to be unable to close tightly, causing medium leakage. Leakage will not only lead to waste of resources, but also may pollute the environment. In severe cases, it may even cause safety accidents. The shift of the sealing ring will affect the sealing effect of the butterfly valve, especially in pipelines with high pressure or corrosive media. The decline in sealing performance may lead to more serious leakage problems. Therefore, we need to propose a butterfly valve that prevents the shift of the sealing rubber ring. Utility Model Content

[0006] The utility model discloses a purpose lies in providing a prevent sealing rubber ring to shift butterfly valve, and sealing strip is sealed with sealing groove cooperation, the contact of valve piece and valve main body is sealed, and sealing strip is installed in the inside of valve piece through mounting plate, and fixed bolt and nut cooperation are fixed to mounting plate, and a plurality of fixed bolts make mounting plate install more stable, and then make sealing strip more stable, and the second sealing ring and the second sealing ring are sealed to the junction of fixed bolt and nut and valve piece, prevent the junction of fixed bolt and nut and valve piece from leaking, to solve the problem in the foregoing background art.

[0007] In order to realize above-mentioned purpose, the utility model provides the following technical scheme:

[0008] A prevent sealing rubber ring to shift butterfly valve, including valve body, the inside of valve body is provided with valve piece, the inside of valve body is provided with the sealing assembly of sealing to valve piece,

[0009] Sealing assembly includes two sealing grooves in the inside of valve body, and the inside of two sealing grooves is provided with sealing strip, and the inside of sealing strip is fixedly connected with mounting plate, and mounting plate is slidably connected with valve piece, and the inside of mounting plate is provided with a plurality of through -holes of annular distribution, and the inside of a plurality of through -holes is provided with fixed bolt, and fixed bolt is rotatably connected with valve piece, and the outside of fixed bolt is rotatably connected with first sealing ring and second sealing ring respectively, and the outside of fixed bolt is threadedly connected with nut.

[0010] Preferably, the valve piece is in contact with the first sealing ring and the second sealing ring, and the second sealing ring is in contact with the nut.

[0011] Preferably, the valve body is fixedly connected with a connecting flange on both sides, and a plurality of connecting holes of annular distribution are formed in the inside of the two connecting flanges.

[0012] Preferably, the upper end of the valve piece is provided with a control block, and a handle is arranged on the side wall of the control block.

[0013] Preferably, a plurality of limiting holes of annular distribution are formed in the inside of the handle, and a limiting rod is slidably connected in the inside of the limiting hole.

[0014] Preferably, one end of the limiting rod is fixedly connected with a moving plate, and a fixed shell is slidably connected to the outside of the moving plate.

[0015] Preferably, the fixed shell is fixedly connected with the control block, and the fixed shell is slidably connected with the limiting rod, and the inside of the fixed shell is provided with a spring.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model is provided with a sealing groove, and the sealing strip cooperates with the sealing groove to seal the contact between the valve disc and the valve body. The sealing strip is installed inside the valve disc through a mounting plate, and the fixing bolts and nuts cooperate to fix the mounting plate. Multiple fixing bolts make the mounting plate more stable, and thus make the sealing strip more stable. The second sealing ring and the second sealing ring seal the connection between the fixing bolts and nuts and the valve disc to prevent leakage at the connection between the fixing bolts and nuts and the valve disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 This is a schematic structural diagram of the sealing assembly of the present invention;

[0021] Figure 4 It is a structural diagram of a partial component of the utility model.

[0022] In the figure: 1. Valve body; 2. Connecting flange; 3. Connecting hole; 4. Valve plate; 5. Sealing assembly; 51. Sealing groove; 52. Sealing strip; 53. Mounting plate; 54. Through hole; 55. Fixing bolt; 56. First sealing ring; 57. Second sealing ring; 58. Nut; 6. Control block; 7. Handle; 8. Limiting hole; 9. Limiting rod; 10. Moving plate; 11. Fixed shell; 12. Spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4 , the utility model provides a technical solution:

[0025] A butterfly valve for preventing a sealing rubber ring from shifting comprises a valve body 1, a valve disc 4 is provided inside the valve body 1, and a sealing assembly 5 for sealing the valve disc 4 is provided inside the valve body 1;

[0026] The sealing assembly 5 includes two sealing grooves 51 provided inside the valve body 1, and sealing strips 52 are provided inside the two sealing grooves 51. A mounting plate 53 is fixedly connected to the inside of the sealing strip 52, and the mounting plate 53 is slidingly connected to the valve disc 4. A plurality of through holes 54 distributed in an annular manner are provided inside the mounting plate 53, and fixing bolts 55 are provided inside the plurality of through holes 54. The fixing bolts 55 are rotatably connected to the valve disc 4, and the outer sides of the fixing bolts 55 are rotatably connected to the first sealing ring 56 and the second sealing ring 57, respectively. The valve disc 4 contacts the first sealing ring 56 and the second sealing ring 57, respectively. The outer side of the fixing bolt 55 is threadedly connected to a nut 58, and the second sealing ring 57 contacts the nut 58.

[0027] Connecting flanges 2 are fixedly connected to both sides of the valve body 1 , and a plurality of connecting holes 3 distributed in an annular pattern are formed inside the two connecting flanges 2 .

[0028] For example, the connection hole 3 facilitates the connection between the connecting flange 2 and the external pipe.

[0029] A control block 6 is provided at the upper end of the valve plate 4, and a handle 7 is provided on the side wall of the control block 6. A plurality of limiting holes 8 distributed in an annular pattern are provided inside the handle 7. The limiting holes 8 are internally slidably connected to a limiting rod 9. One end of the limiting rod 9 is fixedly connected to a movable plate 10. The outer side of the movable plate 10 is slidably connected to a fixed shell 11. The fixed shell 11 is fixedly connected to the control block 6. The fixed shell 11 is slidably connected to the limiting rod 9. A spring 12 is provided inside the fixed shell 11.

[0030] For example, the movable plate 10 is moved, and the movable plate 10 drives the limiting rod 9 to move, and the limiting rod 9 disengages from the limiting hole 8, releasing the limit on the handle 7, and rotating the handle 7. The handle 7 controls the rotation of the valve plate 4 through the transmission of the control block 6. After adjusting the outer side, the movable plate 10 is released, and under the elastic force of the spring 12, the movable plate 10 drives the limiting rod 9 to move toward the handle 7, and the limiting rod 9 slides into the inside of the limiting hole 8 to limit the handle 7, thereby preventing the valve from vibrating when in use and affecting the stability of the handle 7.

[0031] Working principle: When the utility model is used, the connecting flange 2 is connected to the external pipe through the connecting hole 3, and the movable plate 10 is moved. The movable plate 10 drives the limiting rod 9 to move, and the limiting rod 9 disengages from the limiting hole 8, releasing the limit on the handle 7, and rotating the handle 7. The handle 7 controls the rotation of the valve plate 4 through the transmission of the control block 6. After adjusting the outer side, the movable plate 10 is released. Under the elastic force of the spring 12, the movable plate 10 drives the limiting rod 9 to move toward the handle 7. The limiting rod 9 slides into the inside of the limiting hole 8 to limit the handle 7, thereby preventing the valve from vibrating when in use and affecting the stability of the handle 7.

[0032] The sealing strip 52 cooperates with the sealing groove 51 to seal the contact point between the valve disc 4 and the valve body. The sealing strip 52 is installed inside the valve disc 4 through the mounting plate 53. The fixing bolts 55 and the nuts 58 cooperate to fix the mounting plate 53. Multiple fixing bolts 55 make the installation of the mounting plate 53 more stable, thereby making the sealing strip 52 more stable. The second sealing ring 57 and the second sealing ring 57 seal the connection between the fixing bolts 55 and the nuts 58 and the valve disc 4 to prevent leakage at the connection between the fixing bolts 55 and the nuts 58 and the valve disc 4.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A butterfly valve for preventing a sealing rubber ring from deflecting, comprising a valve body (1), characterized in that: A valve disc (4) is provided inside the valve body (1), and a sealing component (5) for sealing the valve disc (4) is provided inside the valve body (1); The sealing assembly (5) comprises two sealing grooves (51) provided inside the valve body (1), the interior of the two sealing grooves (51) is provided with a sealing strip (52), the interior of the sealing strip (52) is fixedly connected with a mounting plate (53), the mounting plate (53) is slidably connected to the valve disc (4), the interior of the mounting plate (53) is provided with a plurality of through holes (54) distributed in an annular pattern, the interior of the plurality of through holes (54) is provided with a fixing bolt (55), the fixing bolt (55) is rotatably connected to the valve disc (4), the outer side of the fixing bolt (55) is rotatably connected with a first sealing ring (56) and a second sealing ring (57), and the outer side of the fixing bolt (55) is threadedly connected with a nut (58).

2. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: The valve plate (4) is in contact with a first sealing ring (56) and a second sealing ring (57), respectively, and the second sealing ring (57) is in contact with a nut (58).

3. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 1, characterized in that: Both sides of the valve body (1) are fixedly connected with connecting flanges (2), and a plurality of connecting holes (3) distributed in an annular manner are provided inside the two connecting flanges (2).

4. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 2, characterized in that: A control block (6) is provided at the upper end of the valve plate (4), and a handle (7) is provided on the side wall of the control block (6).

5. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 4, characterized in that: A plurality of limiting holes (8) distributed in an annular pattern are provided inside the handle (7), and a limiting rod (9) is slidably connected inside the limiting hole (8).

6. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 5, characterized in that: One end of the limiting rod (9) is fixedly connected to a movable plate (10), and the outer side of the movable plate (10) is slidably connected to a fixed shell (11).

7. A butterfly valve for preventing the sealing rubber ring from deflecting according to claim 6, characterized in that: The fixed shell (11) is fixedly connected to the control block (6), the fixed shell (11) is slidably connected to the limiting rod (9), and a spring (12) is provided inside the fixed shell (11).

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