Butyronitrile center line rubber sleeve

Abstract

The butyronitrile center line rubber sleeve comprises a center line rubber sleeve body, a rubber plate A and a rubber plate B are symmetrically and integrally formed outside the center line rubber sleeve body, the rubber plate A is located on the left side of the rubber plate B, a limiting block A making contact with the periphery of a butterfly valve is fixed to the inner side of the rubber plate A through screws, and a limiting block B for limiting the periphery of the butterfly valve is fixed to the inner side of the rubber plate B through screws. A fixing plate in contact with the limiting block A is rotationally connected to the outer portion of the limiting block B, a threaded rod for connecting the fixing plate with the limiting block A is in threaded connection to the outer portion of the fixing plate, and a threaded hole B allowing the threaded rod to penetrate through the fixing plate is formed in the surface of the fixing plate; through the arrangement of the rubber plate A, the rubber plate B, the limiting block A, the limiting block B, the convex particle rubber ring, the threaded rod, the fixing plate, the threaded hole A and the threaded hole B, the problem that when an existing butyronitrile center line rubber sleeve is used, the center line rubber sleeve is placed in a butterfly valve and is prone to deviation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of center line rubber sleeves, and particularly relates to a nitrile center line rubber sleeve. Background Art

[0002] The center line rubber sleeve is a sealing material for butterfly valves. It is usually installed on the inner cavity of the butterfly valve body to enhance the sealing performance and reduce water leakage. This sealing material is usually made of nitrile rubber and can cover the outer surface of the disc-shaped butterfly plate of the butterfly valve to achieve the sealing effect through close contact with the inner side of the valve body.

[0003] However, when the existing nitrile center line rubber sleeve is in use, the center line rubber sleeve is clamped inside the butterfly valve. When the butterfly valve is opened, the working medium in the pipeline will enter the inside of the butterfly valve. The excessive flow force of the working medium will impact the center line rubber sleeve inside the butterfly valve, causing the center line rubber sleeve to loosen and bend inside the butterfly valve, and the position of the center line rubber sleeve will shift, which will have a certain impact on the sealing performance of the butterfly valve. Therefore, a nitrile center line rubber sleeve is provided. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a nitrile center line rubber sleeve. By setting the rubber plate A, rubber plate B, limit block A, limit block B, convex grain rubber ring, threaded rod, fixed plate, threaded hole A and threaded hole B, the utility model solves the problem that the existing nitrile center line rubber sleeve is prone to shift when placed inside the butterfly valve.

[0005] The technical solution adopted by the utility model to solve its technical problems is a nitrile center line rubber sleeve, which includes a center line rubber sleeve body. Rubber plate A and rubber plate B are symmetrically and integrally formed on the outside of the center line rubber sleeve body, and rubber plate A is located on the left side of rubber plate B. A limit block A in contact with the outer circumference of the butterfly valve is fixed by screws on the inner side of rubber plate A, and a limit block B for limiting the outer circumference of the butterfly valve is fixed by screws on the inner side of rubber plate B. A fixed plate in contact with limit block A is rotatably connected to the outside of limit block B. A threaded rod connecting the fixed plate and limit block A is threadedly connected to the outside of the fixed plate. A threaded hole B for the threaded rod to pass through the fixed plate is provided on the surface of the fixed plate, and a threaded hole A for the threaded rod to enter the inside of limit block A is provided on the surface of limit block A. A convex grain rubber ring for increasing the friction force on the inner side of the butterfly valve is bonded to the outside of the center line rubber sleeve body.

[0006] By adopting the above technical solution, when the main body of the center line rubber sleeve is to be placed inside the butterfly valve, first bend the main body of the center line rubber sleeve, then place the main body of the center line rubber sleeve inside the butterfly valve, and then unfold the main body of the center line rubber sleeve. The convex rubber ring outside the main body of the center line rubber sleeve increases the friction with the inner wall of the butterfly valve. Then, the rubber plate A and the rubber plate B outside the main body of the center line rubber sleeve are respectively in contact with the two side surfaces of the butterfly valve. Subsequently, the limit block A on the rubber plate A and the limit block B on the rubber plate B are respectively stuck on the outer periphery of the butterfly valve. Then, the fixing plate outside the limit block B rotates, and the fixing plate is in contact with the surface of the limit block A. Then, rotate the threaded rod on the fixing plate. Subsequently, the threaded rod enters the threaded hole A opened on the limit block A through the threaded hole B opened on the fixing plate, so that the fixing plate is tightly connected with the limit block A. And there are four groups of the rubber plate A, the fixing plate, the limit block A, the rubber plate B and the limit block B, so that the main body of the center line rubber sleeve is stably fixed inside the butterfly valve, avoiding the offset of the main body of the center line rubber sleeve inside the butterfly valve;

[0007] The main body of the center line rubber sleeve is made of nitrile rubber.

[0008] Specifically, rubber blocks for increasing the friction with the outer periphery of the butterfly valve are bonded to the inner sides of the limit block A and the limit block B.

[0009] By adopting the above technical solution, when the limit block A and the limit block B are stuck on the outer periphery of the butterfly valve, the rubber blocks inside the limit block A and the limit block B are in contact with the outer periphery of the butterfly valve, increasing the friction of the limit block A and the limit block B with the butterfly valve respectively, and improving the stability of the connection between the limit block A and the limit block B and the outer periphery of the butterfly valve.

[0010] Specifically, fixing holes for fixing the main body of the center line rubber sleeve inside the butterfly valve are opened inside the main body of the center line rubber sleeve.

[0011] By adopting the above technical solution, when the main body of the center line rubber sleeve is placed inside the butterfly valve, the fixing holes opened inside the main body of the center line rubber sleeve fix the main body of the center line rubber sleeve inside the butterfly valve.

[0012] Specifically, the inner sizes of the threaded hole A and the threaded hole B are both in line with the outer size of the threaded rod.

[0013] By adopting the above technical solution, when the threaded rod enters the threaded hole B opened on the fixing plate and the threaded hole A opened on the limit block A, the inner parts of the threaded hole A and the threaded hole B are both in line with the outside of the threaded rod, facilitating the fixed connection between the fixing plate and the limit block A.

[0014] Specifically, connection holes are opened on the surfaces of the rubber plate A and the rubber plate B.

[0015] By adopting the above technical solution, when the main body of the middle-line rubber sleeve is fixed inside the butterfly valve, the rubber plates A and B on the main body of the middle-line rubber sleeve both extend outside the main body of the middle-line rubber sleeve. Then, the pipeline is connected to the butterfly valve by bolts. The bolts pass through the connection holes opened on the surfaces of the rubber plates A and B, improving the connection stability between the main body of the middle-line rubber sleeve and the butterfly valve.

[0016] Advantages of the present utility model:

[0017] For a nitrile middle-line rubber sleeve of the present utility model, when the main body of the middle-line rubber sleeve is to be placed inside the butterfly valve, first bend the main body of the middle-line rubber sleeve, then place the main body of the middle-line rubber sleeve inside the butterfly valve, and then unfold the main body of the middle-line rubber sleeve. The convex grain rubber ring outside the main body of the middle-line rubber sleeve increases the friction force on the inner wall of the butterfly valve. Then, the rubber plates A and B outside the main body of the middle-line rubber sleeve respectively contact the two side surfaces of the butterfly valve. Subsequently, the limiting block A on the rubber plate A and the limiting block B on the rubber plate B are respectively stuck on the outer circumference of the butterfly valve. Then, the fixing plate outside the limiting block B rotates, and the fixing plate contacts the surface of the limiting block A. Then, rotate the threaded rod on the fixing plate. Subsequently, the threaded rod enters the threaded hole A opened on the limiting block A through the threaded hole B opened on the fixing plate, making the fixing plate tightly connected to the limiting block A. And there are four groups of the rubber plate A, the fixing plate, the limiting block A, the rubber plate B, and the limiting block B, making the main body of the middle-line rubber sleeve stably fixed inside the butterfly valve and preventing the main body of the middle-line rubber sleeve from shifting inside the butterfly valve. Description of the drawings

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of a nitrile middle-line rubber sleeve of the present utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of the limiting block A and the limiting block B of a nitrile middle-line rubber sleeve of the present utility model;

[0021] Figure 3 It is a schematic diagram of the inner side structure of the limiting block A of a nitrile middle-line rubber sleeve of the present utility model;

[0022] In the figure: 1. Main body of the middle-line rubber sleeve; 2. Fixed hole; 3. Convex grain rubber ring; 4. Fixing plate; 5. Limiting block A; 6. Rubber plate A; 7. Rubber plate B; 8. Limiting block B; 9. Connection hole; 10. Threaded hole A; 11. Threaded rod; 12. Threaded hole B; 13. Rubber block. Specific embodiments

[0023] In order to make the technical means, creative features, achieved purposes, and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] To prevent the main body 1 of the center line rubber sleeve from shifting inside the butterfly valve, as an embodiment of the present utility model, as shown in Figure 1 , Figure 2 and Figure 3 , a nitrile center line rubber sleeve of the present utility model includes a main body 1 of the center line rubber sleeve. On the outside of the main body 1 of the center line rubber sleeve, rubber plates A6 and B7 are integrally formed symmetrically, and the rubber plate A6 is located on the left side of the rubber plate B7. A limiting block A5 in contact with the outer periphery of the butterfly valve is fixed by screws on the inner side of the rubber plate A6, and a limiting block B8 for limiting the outer periphery of the butterfly valve is fixed by screws on the inner side of the rubber plate B7. An adjusting plate 4 in contact with the limiting block A5 is rotatably connected to the outside of the limiting block B8. A threaded rod 11 connecting the adjusting plate 4 and the limiting block A5 is threadedly connected to the outside of the adjusting plate 4. A threaded hole B12 for the threaded rod 11 to pass through the adjusting plate 4 is provided on the surface of the adjusting plate 4, and a threaded hole A10 for the threaded rod 11 to enter the inside of the limiting block A5 is provided on the surface of the limiting block A5. A convex grain rubber ring 3 for increasing the friction force on the inner side of the butterfly valve is bonded to the outside of the main body 1 of the center line rubber sleeve.

[0025] During use, when the main body 1 of the center line rubber sleeve is to be placed inside the butterfly valve, first bend the main body 1 of the center line rubber sleeve, then place the main body 1 of the center line rubber sleeve inside the butterfly valve, and then unfold the main body 1 of the center line rubber sleeve. The convex grain rubber ring 3 outside the main body 1 of the center line rubber sleeve increases the friction force on the inner wall of the butterfly valve. Then, the rubber plates A6 and B7 outside the main body 1 of the center line rubber sleeve are respectively in contact with the two side surfaces of the butterfly valve. Subsequently, the limiting block A5 on the rubber plate A6 and the limiting block B8 on the rubber plate B7 are respectively stuck on the outer periphery of the butterfly valve. Then, the adjusting plate 4 outside the limiting block B8 rotates, and the adjusting plate 4 is in contact with the surface of the limiting block A5. Then, rotate the threaded rod 11 on the adjusting plate 4. Subsequently, the threaded rod 11 enters the threaded hole A10 provided on the limiting block A5 through the threaded hole B12 provided on the adjusting plate 4, so that the adjusting plate 4 is tightly connected to the limiting block A5. And four groups of the rubber plate A6, the adjusting plate 4, the limiting block A5, the rubber plate B7 and the limiting block B8 are provided, so that the main body 1 of the center line rubber sleeve is stably fixed inside the butterfly valve, preventing the main body 1 of the center line rubber sleeve from shifting inside the butterfly valve;

[0026] The main body 1 of the center line rubber sleeve is made of nitrile rubber.

[0027] To improve the stability of the connection between the limiting block A5 and the limiting block B8 to the outer periphery of the butterfly valve, exemplarily, as shown in Figure 3 , the present utility model further includes rubber blocks 13 bonded to the inner sides of the limiting block A5 and the limiting block B8 to increase the friction force on the outer periphery of the butterfly valve.

[0028] During use, when the limit block A5 and the limit block B8 are stuck on the outer periphery of the butterfly valve, the rubber blocks 13 inside the limit block A5 and the limit block B8 are in contact with the outer periphery of the butterfly valve, increasing the frictional force of the limit block A5 and the limit block B8 on the butterfly valve respectively, and improving the stability of the connection between the limit block A5 and the limit block B8 and the outer periphery of the butterfly valve.

[0029] In order to fix the central line rubber sleeve body 1 inside the butterfly valve, exemplarily, as Figure 1 shown, the present utility model further includes that a fixing hole 2 for fixing the central line rubber sleeve body 1 inside the butterfly valve is provided inside the central line rubber sleeve body 1.

[0030] During use, when the central line rubber sleeve body 1 is placed inside the butterfly valve, the fixing hole 2 provided inside the central line rubber sleeve body 1 fixes the central line rubber sleeve body 1 inside the butterfly valve.

[0031] In order to fixedly connect the fixing plate 4 and the limit block A5, exemplarily, as Figure 2 and Figure 3 shown, the present utility model further includes that the inner sizes of the threaded hole A10 and the threaded hole B12 are both in conformity with the outer size of the threaded rod 11.

[0032] During use, when the threaded rod 11 enters the threaded hole B12 provided on the fixing plate 4 and the threaded hole A10 provided on the limit block A5, both the threaded hole A10 and the threaded hole B12 are in conformity with the outside of the threaded rod 11, facilitating the fixed connection between the fixing plate 4 and the limit block A5.

[0033] In order to improve the stability of the connection between the central line rubber sleeve body 1 and the butterfly valve, exemplarily, as Figure 1 shown, the present utility model further includes that connection holes 9 are provided on the surfaces of the rubber plate A6 and the rubber plate B7.

[0034] During use, when the central line rubber sleeve body 1 is fixed inside the butterfly valve, the rubber plate A6 and the rubber plate B7 on the central line rubber sleeve body 1 both extend outside the central line rubber sleeve body 1, and then the pipeline and the butterfly valve are connected using bolts, and the bolts pass through the connection holes 9 provided on the surfaces of the rubber plate A6 and the rubber plate B7, improving the stability of the connection between the central line rubber sleeve body 1 and the butterfly valve.

[0035] When the utility model is in use, when the main body 1 of the center line rubber sleeve is to be placed inside the butterfly valve, first bend the main body 1 of the center line rubber sleeve, then place the main body 1 of the center line rubber sleeve inside the butterfly valve, and then unfold the main body 1 of the center line rubber sleeve. The convex rubber ring 3 outside the main body 1 of the center line rubber sleeve increases the friction force on the inner wall of the butterfly valve. Then, the rubber plate A6 and the rubber plate B7 outside the main body 1 of the center line rubber sleeve are respectively in contact with the two side surfaces of the butterfly valve. Subsequently, the limiting block A5 on the rubber plate A6 and the limiting block B8 on the rubber plate B7 are respectively stuck on the outer periphery of the butterfly valve. Then, the fixing plate 4 outside the limiting block B8 rotates, and the fixing plate 4 is in contact with the surface of the limiting block A5. Then, rotate the threaded rod 11 on the fixing plate 4. Subsequently, the threaded rod 11 enters the threaded hole A10 opened on the limiting block A5 through the threaded hole B12 opened on the fixing plate 4, so that the fixing plate 4 is tightly connected with the limiting block A5. And the rubber plate A6, the fixing plate 4, the limiting block A5, the rubber plate B7 and the limiting block B8 are all provided with four groups, so that the main body 1 of the center line rubber sleeve is stably fixed inside the butterfly valve, and the main body 1 of the center line rubber sleeve is prevented from shifting inside the butterfly valve;

[0036] The main body 1 of the center line rubber sleeve is made of nitrile rubber;

[0037] When the limiting block A5 and the limiting block B8 are stuck on the outer periphery of the butterfly valve, the rubber blocks 13 inside the limiting block A5 and the limiting block B8 are in contact with the outer periphery of the butterfly valve, increasing the friction force of the limiting block A5 and the limiting block B8 on the butterfly valve respectively, and improving the stability of the connection between the limiting block A5 and the limiting block B8 and the outer periphery of the butterfly valve;

[0038] When the main body 1 of the center line rubber sleeve is placed inside the butterfly valve, the fixing holes 2 opened inside the main body 1 of the center line rubber sleeve fix the main body 1 of the center line rubber sleeve inside the butterfly valve;

[0039] When the threaded rod 11 enters the threaded hole B12 opened on the fixing plate 4 and the threaded hole A10 opened on the limiting block A5, both the threaded hole A10 and the threaded hole B12 are in conformity with the outside of the threaded rod 11, facilitating the fixed connection between the fixing plate 4 and the limiting block A5;

[0040] When the main body 1 of the center line rubber sleeve is fixed inside the butterfly valve, the rubber plate A6 and the rubber plate B7 on the main body 1 of the center line rubber sleeve both extend outside the main body 1 of the center line rubber sleeve. Then, the pipeline is connected to the butterfly valve by bolts, and the bolts pass through the connection holes 9 opened on the surfaces of the rubber plate A6 and the rubber plate B7, improving the stability of the connection between the main body 1 of the center line rubber sleeve and the butterfly valve.

[0041] The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A nitrile medium wire sleeve, characterized in that, It includes a center line rubber sleeve body (1). On the outside of the center line rubber sleeve body (1), a rubber plate A (6) and a rubber plate B (7) are integrally formed symmetrically, and the rubber plate A (6) is located on the left side of the rubber plate B (7). Inside the rubber plate A (6), a limit block A (5) that contacts the outer circumference of the butterfly valve is fixed by screws. Inside the rubber plate B (7), a limit block B (8) that limits the outer circumference of the butterfly valve is fixed by screws. Outside the limit block B (8), a fixing plate (4) that contacts the limit block A (5) is rotatably connected. Outside the fixing plate (4), a threaded rod (11) that connects the fixing plate (4) and the limit block A (5) is threadedly connected. On the surface of the fixing plate (4), a threaded hole B (12) through which the threaded rod (11) passes through the fixing plate (4) is provided. On the surface of the limit block A (5), a threaded hole A (10) through which the threaded rod (11) enters the inside of the limit block A (5) is provided. On the outside of the center line rubber sleeve body (1), a convex grain rubber ring (3) that increases the friction force on the inner side of the butterfly valve is adhered.

2. A nitrile medium wire rubber sleeve according to claim 1, wherein, On the inner sides of the limit block A (5) and the limit block B (8), rubber blocks (13) that increase the friction force on the outer circumference of the butterfly valve are adhered.

3. A nitrile middle wire rubber sleeve according to claim 1, characterized in that, Inside the center line rubber sleeve body (1), a fixing hole (2) for fixing the center line rubber sleeve body (1) inside the butterfly valve is provided.

4. A nitrile medium wire sleeve according to claim 1, characterized in that, The inner sizes of the threaded hole A (10) and the threaded hole B (12) are both in line with the outer size of the threaded rod (11).

5. A nitrile medium wire sleeve according to claim 1, wherein, On the surfaces of the rubber plate A (6) and the rubber plate B (7), connection holes (9) are provided.

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