Headless flange butterfly valve

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a headless flange butterfly valve which comprises a valve body, a butterfly plate is rotatably installed in the valve body, two sets of grooves are formed in the surface of the outer wall of the butterfly plate, a plurality of sets of threaded sleeves are integrally constructed on the surfaces of the inner walls of the grooves, and the threaded sleeves are connected with the butterfly plate. A semi-arc seat inserted into the threaded sleeve is mounted in the groove in a matched manner; in the using process of the headless flange butterfly valve, the arc-shaped rubber plate on the periphery of the butterfly plate in the headless flange butterfly valve can be matched with the ring seat in the valve body, a gap between the butterfly plate and the valve body can be blocked separately, and when the arc-shaped rubber plate is abraded greatly due to scratching, the screw bodies in the supporting holes in the periphery of the semi-arc seat only need to be screwed off, so that the butterfly plate is prevented from being damaged. The screw body and the threaded sleeve are mutually screwed and separated, so that the semi-arc seat can be disassembled, the arc rubber plate between the semi-arc seat and the groove can be replaced, and the replacement is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a headless flange butterfly valve. Background Art

[0002] Large ventilation butterfly valves are widely used in ventilation and dust removal ducts in the metallurgical industry to regulate the flow rate of air ducts. The butterfly plates of existing large ventilation butterfly valves are all made of steel plates and channel steels. Patent No. CN201920740575.5 discloses a large ventilation butterfly valve disc type. It is equipped with two disc-shaped heads that are buckled together, and a flange ring is clamped in the middle to seal the periphery of the butterfly head. This is to facilitate the fixation of the front and rear valve stems, and secondly, it also strengthens the ventilation butterfly valve. Since the butterfly head is a spherical surface, it has good rigidity and pressure-bearing performance. However, during the opening and closing process of the butterfly head inside the butterfly valve, the flange ring on the outer periphery of the butterfly head will scratch against the inner wall of the butterfly valve, which can easily cause the flange ring to wear. The flange ring is quite cumbersome to disassemble, making it inconvenient to replace. To this end, we propose a headless flange butterfly valve. Utility Model Content

[0003] In view of the problems in the prior art, the utility model provides a headless flange butterfly valve.

[0004] The technical solution adopted by the utility model to solve its technical problems is a headless flange butterfly valve, comprising a valve body, a butterfly plate rotatably mounted in the valve body, and a groove is provided on the outer wall surface of the butterfly plate, and there are two groups of grooves, a threaded sleeve is integrally constructed on the inner wall surface of the groove, and there are multiple groups of threaded sleeves, a semi-arc seat plugged into the threaded sleeve is fitted in the groove, a branch hole connected to the threaded sleeve is provided on the outer wall surface of the semi-arc seat, and there are multiple groups of branch holes, a screw body threadedly connected to the threaded sleeve is threadedly mounted in the branch hole, an arc-shaped rubber plate abutting against the inner wall of the valve body is clamped between the semi-arc seat and the groove, and a ring seat fitting with the arc-shaped rubber plate is integrally constructed in the valve body;

[0005] The groove and the opposite side of the semi-arc seat are both provided with an arc groove, and a gasket is clamped and connected in the arc groove, and the outer peripheral surface of the gasket is provided with anti-slip grooves.

[0006] By adopting the above technical solution, during the use of the headless flange butterfly valve, the arc-shaped rubber plate on the outer periphery of the butterfly plate inside the butterfly valve can fit with the ring seat inside the valve body, which is convenient for sealing the gap between the butterfly plate and the valve body. When the arc-shaped rubber plate is greatly worn due to scratches, it is only necessary to unscrew the screw body in the branch hole on the outer periphery of the semi-arc seat so that the screw body and the threaded sleeve are screwed together and separated, thereby the semi-arc seat can be disassembled and the arc-shaped rubber plate between the semi-arc seat and the groove can be replaced, and the replacement is simple and convenient.

[0007] When replacing the curved rubber plate, the gasket can be easily clipped into the curved groove on the opposite side of the groove and the semi-arc seat, and the anti-slip grooves on the outer periphery of the gasket facilitate mutual contact with the curved rubber plate, and improve the stability of the curved rubber plate when fixed between the groove and the semi-arc seat, so that the curved rubber plate can be used more stably in the future.

[0008] Specifically, the outer peripheral surface of the gasket is provided with straight holes plugged into the threaded sleeve, and there are multiple groups of straight holes.

[0009] By adopting the above technical solution, the straight hole on the surface of the gasket can be plugged into the threaded sleeve, which facilitates improving the stability of the gasket being clamped in the arc groove.

[0010] Specifically, a rubber plug for sealing and protection is clamped in the branch hole.

[0011] By adopting the above technical solution, the rubber plug can be easily snapped into the branch hole, making it easy to seal the branch hole.

[0012] Specifically, a film located in the branch hole is sleeved and installed on the outer periphery of the screw body.

[0013] By adopting the above technical solution, the film has good elasticity, which is convenient for improving the stability of the screw body being screwed into the branch hole and can seal the gap between the screw body and the branch hole.

[0014] Specifically, flange rings are integrally constructed on both side end surfaces of the outer periphery of the valve body.

[0015] By adopting the above technical solution, the flange ring on the outer periphery of the valve body is convenient to cooperate with the bolts, making the valve body easy to install.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The technical solution of the present application is to design a butterfly plate, a groove, a semi-arc seat, a threaded sleeve, a screw body, a branch hole, a curved rubber plate and a ring seat. During the use of the headless flange butterfly valve, the curved rubber plate on the outer periphery of the butterfly plate inside the butterfly plate can fit with the ring seat inside the valve body, which is convenient for sealing the gap between the butterfly plate and the valve body. When the curved rubber plate is severely worn due to scratches, it is only necessary to unscrew the screw body in the branch hole on the outer periphery of the semi-arc seat so that the screw body and the threaded sleeve are screwed together and separated, thereby the semi-arc seat can be disassembled and the curved rubber plate between the semi-arc seat and the groove can be replaced, and the replacement is simple and convenient.

[0018] 2. The design of the arc groove, gasket and anti-slip groove in the technical solution of this application makes it easy to clip the gasket into the arc groove on the opposite side of the groove and the semi-arc seat when replacing the arc rubber plate, and the anti-slip groove on the outer periphery of the gasket facilitates mutual contact with the arc rubber plate, and improves the stability of the arc rubber plate when it is fixed between the groove and the semi-arc seat, so that the arc rubber plate can be used more stably in the future. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 It is a planar schematic diagram of the utility model;

[0021] Figure 2 This is a schematic plan view of the connection structure between the butterfly plate and the valve body of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the local A between the butterfly plate and the valve body of the present invention;

[0023] Figure 4 This is a schematic diagram of the gasket structure of the utility model;

[0024] In the figure: 1. Valve body; 2. Butterfly plate; 3. Groove; 4. Semi-arc seat; 5. Threaded sleeve; 6. Screw body; 7. Arc rubber plate; 8. Ring seat; 9. Arc groove; 10. Gasket; 11. Anti-slip groove; 12. Straight hole; 13. Rubber; 14. Branch hole; 15. Rubber plug; 16. Flange ring. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] See also Figure 1-4 The embodiment of the present invention provides a technical solution: a headless flange butterfly valve, comprising a valve body 1, a butterfly plate 2 is rotatably installed in the valve body 1, and the outer wall surface of the butterfly plate 2 is provided with a groove 3, and there are two groups of grooves 3, the inner wall surface of the groove 3 is integrally constructed with a threaded sleeve 5, and there are multiple groups of threaded sleeves 5, a semi-arc seat 4 is fitted in the groove 3 and plugged into the threaded sleeve 5, the outer wall surface of the semi-arc seat 4 is provided with a branch hole 14 connected to the threaded sleeve 5, and there are multiple groups of branch holes 14, a screw body 6 is threadedly installed in the branch hole 14 and screwed in connection with the threaded sleeve 5, an arc-shaped rubber plate 7 that abuts against the inner wall of the valve body 1 is clamped between the semi-arc seat 4 and the groove 3, and a ring seat 8 that fits with the arc-shaped rubber plate 7 is integrally constructed in the valve body 1; the groove 3 and the semi-arc seat 4 are both provided with an arc groove 9 on the opposite side, and a gasket 10 is clamped and connected in the arc groove 9, and the outer circumferential surface of the gasket 10 is provided with anti-slip grooves 11.

[0027] When in use, during the use of the headless flange butterfly valve, the arc-shaped rubber plate 7 on the outer periphery of the butterfly plate 2 inside it can fit with the ring seat 8 inside the valve body 1, which is convenient for sealing the gap between the butterfly plate 2 and the valve body 1. When the arc-shaped rubber plate 7 is worn out due to scratches, it is only necessary to unscrew the screw body 6 in the branch hole 14 on the outer periphery of the semi-arc seat 4, so that the screw body 6 and the threaded sleeve 5 are screwed together and separated, thereby the semi-arc seat 4 can be disassembled, and the arc-shaped rubber plate 7 between the semi-arc seat 4 and the groove 3 can be replaced, and the replacement is simple and convenient.

[0028] When replacing the curved rubber plate 7, the gasket 10 can be conveniently snapped into the curved groove 9 on the opposite side of the groove 3 and the semi-arc seat 4, and the anti-slip grooves 11 on the outer periphery of the gasket 10 facilitate mutual contact with the curved rubber plate 7, and improve the stability of the curved rubber plate 7 when it is fixed between the groove 3 and the semi-arc seat 4, so that the curved rubber plate 7 can be used more stably in the future.

[0029] like Figure 2 、 Figure 3 and Figure 4 As shown, the outer peripheral surface of the gasket 10 is provided with straight holes 12 which are plugged into the threaded sleeve 5 , and there are multiple groups of straight holes 12 .

[0030] When in use, the straight hole 12 on the surface of the gasket 10 can be plugged into the threaded sleeve 5 , thereby improving the stability of the gasket 10 being clamped in the arc groove 9 .

[0031] like Figure 2 and Figure 3 As shown, a rubber plug 15 for sealing and protection is clamped in the branch hole 14.

[0032] When in use, the rubber plug 15 is conveniently snapped into the branch hole 14 , thereby conveniently sealing the branch hole 14 .

[0033] like Figure 2 and Figure 3 As shown, a film 13 located in the support hole 14 is sleeved and installed on the outer periphery of the screw body 6 .

[0034] When in use, the film 13 has good elasticity, which is convenient for improving the stability of the screw body 6 being screwed into the branch hole 14 and can seal the gap between the screw body 6 and the branch hole 14 .

[0035] like Figure 1 As shown, flange rings 16 are integrally formed on both side end surfaces of the outer periphery of the valve body 1 .

[0036] When in use, the flange ring 16 on the outer periphery of the valve body 1 is easily matched with the bolts, so that the valve body 1 is easy to install.

[0037] The working principle and use process of the utility model are as follows: when using, first install the corresponding structural components in the appropriate position, and in the process of using the headless flange butterfly valve, the arc-shaped rubber plate 7 on the outer periphery of the butterfly plate 2 inside the butterfly plate 2 can fit with the ring seat 8 inside the valve body 1, so as to facilitate the sealing of the gap between the butterfly plate 2 and the valve body 1. When the arc-shaped rubber plate 7 is worn out due to scratches, it is only necessary to unscrew the screw body 6 in the branch hole 14 on the outer periphery of the semi-arc seat 4, so that the screw body 6 and the threaded sleeve 5 are screwed together. The semi-arc seat 4 can be disassembled, and the arc-shaped rubber plate 7 between the semi-arc seat 4 and the groove 3 can be replaced, and the replacement is simple and convenient. At the same time, when replacing the arc-shaped rubber plate 7, the gasket 10 can be conveniently clamped in the arc groove 9 on the opposite side of the groove 3 and the semi-arc seat 4, and the anti-slip groove 11 on the outer periphery of the gasket 10 is convenient for abutting against the arc-shaped rubber plate 7, and improves the stability of the arc-shaped rubber plate 7 when it is fixed between the groove 3 and the semi-arc seat 4, so that the arc-shaped rubber plate 7 can be used more stably in the future.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A headless flange butterfly valve, characterized in that: The valve body (1) comprises a butterfly plate (2) rotatably mounted in the valve body (1), and a groove (3) is provided on the outer wall surface of the butterfly plate (2), and there are two groups of grooves (3); a threaded sleeve (5) is integrally constructed on the inner wall surface of the groove (3), and there are multiple groups of threaded sleeves (5); a semi-arc seat (4) plugged into the threaded sleeve (5) is fitted in the groove (3); a branch hole (14) connected to the threaded sleeve (5) is provided on the outer wall surface of the semi-arc seat (4), and there are multiple groups of branch holes (14); a screw body (6) threadedly connected to the threaded sleeve (5) is threadedly mounted in the branch hole (14); an arc-shaped rubber plate (7) abutting against the inner wall of the valve body (1) is clamped between the semi-arc seat (4) and the groove (3); and a ring seat (8) fitting with the arc-shaped rubber plate (7) is integrally constructed in the valve body (1); The groove (3) and the semi-arc seat (4) are both provided with an arc groove (9) on the opposite side, and a gasket (10) is snap-connected in the arc groove (9), and the outer peripheral surface of the gasket (10) is provided with anti-slip grooves (11).

2. A headless flange butterfly valve according to claim 1, characterized in that: The outer peripheral surface of the gasket (10) is provided with straight holes (12) plugged into the threaded sleeve (5), and there are multiple groups of straight holes (12).

3. A headless flange butterfly valve according to claim 1, characterized in that: A rubber plug (15) for sealing and protection is clamped in the branch hole (14).

4. A headless flange butterfly valve according to claim 1, characterized in that: A film (13) located in the support hole (14) is sleeved and installed on the outer periphery of the screw body (6).

5. The headless flange butterfly valve according to claim 1, characterized in that: Both side end surfaces of the outer periphery of the valve body (1) are integrally formed with flange rings (16).

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