Sealing mechanism of flange butterfly valve

Abstract

The utility model relates to the technical field of flange butterfly valves, in particular to a sealing mechanism of a flange butterfly valve, which comprises a butterfly valve body, a splitting notch and a push rod, two sides of the butterfly valve body are respectively provided with a first connecting flange and a second connecting flange, and one side surface of the first connecting flange and one side surface of the second connecting flange are respectively provided with a clamping groove; splitting rings are arranged in the clamping grooves, the two sides of each splitting ring penetrate through the splitting notches to be welded with shifting pieces, and the sides, corresponding to the splitting rings, in the clamping grooves are filled with sealing gaskets; the sealing washers filled in the corresponding clamping grooves of the first connecting flange and the second connecting flange are made of rubber materials, so that the sealing performance of the connecting end is improved when the butterfly valve body is connected and fixed through the flanges, and the sealing effect is ensured.

Description

Technical Field

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

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for on-off control of low-pressure pipeline media. A butterfly valve refers to a valve whose closing member is a disc that rotates around the valve axis to achieve opening and closing.

[0003] At present, butterfly valves are fixed by flange connection. However, the contact end faces between the flanges are smooth, and the sealing effect is achieved only by the sealing ring on the inner wall of the valve seat, thereby reducing the sealing effect. Therefore, a sealing mechanism of a flange butterfly valve is proposed, and the flange connection has a sealing structure to ensure the sealing effect. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a sealing mechanism for a flange butterfly valve, wherein the flange connections are all provided with a sealing structure, thereby ensuring a sealing effect.

[0005] The technical solution adopted by the utility model to solve the technical problem is a sealing mechanism of a flange butterfly valve, comprising a butterfly valve body, a split notch and a push rod, wherein a first connecting flange and a second connecting flange are respectively arranged on both sides of the butterfly valve body, and a clamping groove is provided on one side surface of the first connecting flange and the second connecting flange;

[0006] A split ring is provided in each of the slots, and paddles are welded through the split notches on both sides of the split rings, and a sealing gasket is filled on one side of the slot corresponding to the split ring.

[0007] By adopting the above technical solution, the sealing gaskets filled in the corresponding grooves of the first connecting flange and the second connecting flange are made of rubber material, so as to improve the sealing of the connecting end when the butterfly valve body is flange-connected and fixed, thereby ensuring the sealing effect;

[0008] Use the split notch to facilitate the movement of the paddles on both sides of the split ring;

[0009] When the sealing gasket needs to be replaced later, the paddle can be toggled so that the split ring pushes the sealing gasket into the slots of the first connecting flange and the second connecting flange, making replacement convenient;

[0010] After the disassembly and replacement is completed, the paddle is pushed to reset by the springs in the inner cavities of the first connecting flange and the second connecting flange and the push rod.

[0011] Specifically, splitting notches are provided on both side surfaces of the first connecting flange and the second connecting flange away from the slots.

[0012] By adopting the technical solution, the slot is utilized to facilitate the insertion of the split ring and the sealing gasket.

[0013] Specifically, a spring is welded on one side of the splitting notch corresponding to the inner cavity of the first connecting flange and the second connecting flange, a push rod is welded on one side of the spring, and the other end of the push rod is welded and fixed to the paddle.

[0014] By adopting the above technical solution, the springs in the inner cavities of the first connecting flange and the second connecting flange cooperate with the push rod to push the paddle to reset.

[0015] Specifically, preset holes are provided on the surface of the split ring at positions corresponding to the connection holes of the first connection flange and the second connection flange.

[0016] By adopting the above technical solution, the pre-set holes on the surface of the split ring are used to facilitate the penetration of bolts when the first connecting flange and the second connecting flange are connected and fixed.

[0017] Specifically, the push rod, split ring and paddle are all made of stainless steel, and the sealing gasket is made of rubber material.

[0018] By adopting the above technical solution, the push rod, split ring and pick are all made of stainless steel to improve the corrosion resistance of the material.

[0019] Beneficial effects of the utility model:

[0020] (1) The sealing mechanism of a flange butterfly valve described in the utility model is a sealing mechanism in which the sealing gaskets filled in the corresponding grooves of the first connecting flange and the second connecting flange are made of rubber material, so as to improve the sealing performance of the connection end when the butterfly valve body is flange-connected and fixed, thereby ensuring the sealing effect.

[0021] (2) The sealing mechanism of the flange butterfly valve described in the utility model can be used to replace the sealing gasket in the later stage by pushing the paddle to make the split ring push the sealing gasket into the groove of the first connecting flange and the second connecting flange, which is convenient for replacement. After the replacement is completed, the paddle is reset by the spring in the inner cavity of the first connecting flange and the second connecting flange and the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic side view of the whole of the utility model;

[0024] Figure 2 It is a schematic diagram of the card slot of the utility model;

[0025] Figure 3 It is a schematic diagram of the split ring of the utility model;

[0026] Figure 4 It is a schematic diagram of a spring of the utility model;

[0027] In the figure: 1. Butterfly valve body; 2. First connecting flange; 3. Second connecting flange; 4. Slot; 5. Splitting notch; 6. Spring; 7. Push rod; 8. Splitting ring; 9. Pick; 10. Sealing gasket; 11. Pre-set hole. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] To ensure the sealing effect, Figure 1-4 As shown, a sealing mechanism of a flange butterfly valve described in the utility model comprises a butterfly valve body 1, a split notch 5 and a push rod 7, a first connecting flange 2 and a second connecting flange 3 are respectively arranged on both sides of the butterfly valve body 1, and a clamping groove 4 is provided on one side surface of the first connecting flange 2 and the second connecting flange 3;

[0030] A split ring 8 is provided in each of the card slots 4 , and paddles 9 are welded through the split notches 5 on both sides of the split ring 8 , and a sealing gasket 10 is filled on one side of the card slot 4 corresponding to the split ring 8 .

[0031] When in use, the pre-set holes 11 on the surface of the split ring 8 are used to facilitate the penetration of bolts when the first connecting flange 2 and the second connecting flange 3 are connected and fixed;

[0032] The sealing gaskets 10 filled in the corresponding slots 4 of the first connecting flange 2 and the second connecting flange 3 are made of rubber material, so as to improve the sealing performance of the connection end when the butterfly valve body 1 is flange-connected and fixed, thereby ensuring the sealing effect;

[0033] The splitting notch 5 is used to facilitate the movement of the paddles 9 on both sides of the splitting ring 8;

[0034] When the sealing gasket 10 needs to be replaced later, the paddle 9 can be toggled so that the split ring 8 pushes the sealing gasket 10 out of the slot 4 of the first connecting flange 2 and the second connecting flange 3, which is convenient for replacement;

[0035] After the disassembly and replacement is completed, the spring 6 in the inner cavity of the first connecting flange 2 and the second connecting flange 3 cooperates with the push rod 7 to push the paddle 9 to reset.

[0036] In order to ensure the sealing effect, for example, Figure 1 , Figure 2 , Figure 4 As shown, the utility model also includes that the first connecting flange 2 and the second connecting flange 3 are both provided with splitting notches 5 at positions away from the slots 4 on both side surfaces.

[0037] When in use, the card slot 4 is utilized to facilitate the insertion of the split ring 8 and the sealing gasket 10 .

[0038] For example, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the utility model also includes that a spring 6 is welded on one side of the splitting notch 5 corresponding to the inner cavity of the first connecting flange 2 and the second connecting flange 3, a push rod 7 is welded on one side of the spring 6, and the other end of the push rod 7 is welded and fixed to the paddle 9.

[0039] When in use, the spring 6 in the inner cavity of the first connecting flange 2 and the second connecting flange 3 cooperates with the push rod 7 to push the paddle 9 to reset.

[0040] For example, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the utility model also includes that the surface of the split ring 8 is provided with preset holes 11 at positions corresponding to the connection holes of the first connection flange 2 and the second connection flange 3 .

[0041] When in use, the pre-set holes 11 on the surface of the split ring 8 are utilized to facilitate the penetration of bolts when the first connecting flange 2 and the second connecting flange 3 are connected and fixed.

[0042] For example, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the utility model also includes that the push rod 7, the split ring 8 and the paddle 9 are all made of stainless steel, and the sealing gasket 10 is made of rubber material.

[0043] When in use, the push rod 7, the split ring 8 and the paddle 9 are all made of stainless steel to improve the corrosion resistance of the material.

[0044] When the utility model is in use, the push rod 7, the split ring 8 and the paddle 9 are all made of stainless steel to improve the corrosion resistance of the material;

[0045] The sealing gaskets 10 filled in the corresponding slots 4 of the first connecting flange 2 and the second connecting flange 3 are made of rubber material, so as to improve the sealing performance of the connection end when the butterfly valve body 1 is flange-connected and fixed, thereby ensuring the sealing effect;

[0046] The splitting notch 5 is used to facilitate the movement of the paddles 9 on both sides of the splitting ring 8;

[0047] When the sealing gasket 10 needs to be replaced later, the paddle 9 can be toggled so that the split ring 8 pushes the sealing gasket 10 out of the slot 4 of the first connecting flange 2 and the second connecting flange 3, which is convenient for replacement;

[0048] After the disassembly and replacement is completed, the spring 6 in the inner cavity of the first connecting flange 2 and the second connecting flange 3 cooperates with the push rod 7 to push the paddle 9 to reset.

[0049] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sealing mechanism for a flange butterfly valve, characterized in that: The butterfly valve comprises a butterfly valve body (1), a splitting notch (5) and a push rod (7); a first connecting flange (2) and a second connecting flange (3) are respectively arranged on both sides of the butterfly valve body (1); and a clamping groove (4) is provided on one side surface of the first connecting flange (2) and the second connecting flange (3); A split ring (8) is provided in each of the slots (4), and paddles (9) are welded through the split notches (5) on both sides of the split ring (8), and a sealing gasket (10) is filled on one side of the slot (4) corresponding to the split ring (8).

2. The sealing mechanism of a flange butterfly valve according to claim 1, characterized in that: Splitting notches (5) are provided on both side surfaces of the first connecting flange (2) and the second connecting flange (3) at positions away from the clamping groove (4).

3. The sealing mechanism of a flange butterfly valve according to claim 1, characterized in that: A spring (6) is welded to one side of the splitting notch (5) corresponding to the inner cavity of the first connecting flange (2) and the second connecting flange (3), a push rod (7) is welded to one side of the spring (6), and the other end of the push rod (7) is welded and fixed to the paddle (9).

4. The sealing mechanism of a flange butterfly valve according to claim 1, characterized in that: Pre-set holes (11) are provided on the surface of the split ring (8) at positions corresponding to the connection holes of the first connection flange (2) and the second connection flange (3).

5. The sealing mechanism of a flange butterfly valve according to claim 1, characterized in that: The push rod (7), the split ring (8) and the paddle (9) are all made of stainless steel, and the sealing gasket (10) is made of rubber material.

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