High-sealing-performance butterfly valve with damping function

Abstract

The utility model discloses a high sealing butterfly valve with damping function, which comprises a valve body, two corrugated pipes and two connecting pipes, two ends of the valve body are respectively provided with a first flange, two ends of each corrugated pipe are respectively provided with a second flange, and the two connecting pipes are respectively provided with a first flange and a second flange. The first flanges at the two ends of the valve body are fixedly connected with the second flanges at one ends of the two corrugated pipes through bolts respectively, the third flanges and the fourth flanges are installed at the two ends of the connecting pipes respectively, and the third flanges of the two connecting pipes are fixedly connected with the second flanges at the other ends of the two corrugated pipes through bolts respectively. According to the high-sealing-performance butterfly valve with the damping function, through cooperation of the corrugated pipe, the first elastic block and the second elastic block, when fluid impacts the valve plate, the first elastic block and the second elastic block can play a buffering role, so that damping is conducted on the valve body, the service life of the butterfly valve is prolonged, the corrugated pipe can deform when the valve body vibrates, and the sealing performance of the butterfly valve is improved. Therefore, the risk of bolt loosening at the joint of the butterfly valve and the pipeline is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, concretely is a high sealing butterfly valve with damping function. BACKGROUND

[0002] The butterfly valve is also called flap valve, is a simple structure regulating valve, can be used to low pressure pipeline medium switch, is often used for controlling air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive medium and various types fluid flow, mainly plays the role of cutting off and throttling on the pipeline, the butterfly valve not only is widely applied in general industry such as petroleum, gas, chemical industry, water treatment, but also is applied to the cooling water system of thermal power station, the existing butterfly valve is mainly bolted fixedly connected between two pipelines, and usually is in the state of suspension, in the use process, the valve plate is often impacted by fluid, makes the valve body vibrate, and long-term vibration can cause the butterfly valve to be damaged, shortens the service life of butterfly valve, and the bolt at the connection of valve body and pipeline is also easy to loosen, causes fluid leakage.

[0003] Therefore, we design a high sealing butterfly valve with damping function here. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses to the deficiency of prior art, provide a high sealing butterfly valve with damping function to solve the problem in the background art.

[0005] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a high sealing butterfly valve with damping function, including a valve body, two bellows and two connecting pipes, the both ends of valve body are installed with first flange, the both ends of bellows are installed with second flange, and the first flange of valve body two ends is fixedly connected with the second flange of one end of two bellows respectively through bolt, the both ends of connecting pipe are installed with third flange and fourth flange respectively, and the third flange of two connecting pipes is fixedly connected with the second flange of the other end of two bellows respectively through bolt.

[0006] Four cylinders that are annular array distribution are arranged between the first flange and the nearest third flange, and the four cylinders all simultaneously penetrate the first flange, the third flange and the two second flanges between the two flanges, the both ends of each cylinder are installed with limit block, a first elastic block and two second elastic blocks are arranged on each cylinder, one of the second elastic blocks is located between the first flange and the limit block adjacent thereto, and the other second elastic block is located between the third flange and the limit block adjacent thereto, and the first elastic block is located between the two second flanges.

[0007] Preferably, the valve body is rotatably connected with a valve rod, the valve body is internally provided with a valve plate, the valve plate is fixed on the valve rod, a first sealing ring is arranged between the inner wall of the valve body and the valve plate, the first sealing ring is fixed on the valve body, a worm gear box is arranged on the valve body, an output end of the worm gear box is connected with the valve rod, and a hand wheel is arranged on an input end of the worm gear box.

[0008] Preferably, a second sealing ring is arranged between the first flange and the second flange connected with the first flange.

[0009] Preferably, a third sealing ring is arranged between the third flange and the second flange connected with the third flange.

[0010] Preferably, the first elastic block is in a cylindrical shape, an axial through hole is arranged at the center of the circular bottom surface of the first elastic block, and the cylindrical rod passes through the through hole.

[0011] Preferably, the second elastic block is in a circular sheet shape, a through hole is arranged at the center of the second elastic block, and the cylindrical rod passes through the through hole.

[0012] Preferably, the first elastic block and the second elastic block are both rubber blocks.

[0013] Preferably, the length of the cylindrical rod is equal to the total length of one first flange, two second flanges, one third flange, one first elastic block and two second elastic blocks.

[0014] Compared with the prior art, the butterfly valve with high sealing performance and damping function has the following beneficial effects:

[0015] The butterfly valve with high sealing performance and damping function has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the damping structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the valve body structure of the utility model.

[0019] Reference: 1, valve body; 2, bellows; 3, connecting pipe; 4, first flange; 5, second flange; 6, third flange; 7, fourth flange; 8, cylinder; 9, limit block; 10, first elastic block; 11, second elastic block; 12, valve rod; 13, valve plate; 14, first sealing ring; 15, worm gear box; 16, hand wheel; 17, second sealing ring; 18, third sealing ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-3 In the embodiment, the butterfly valve with damping function and high sealing performance comprises a valve body 1, two bellows 2 and two connecting pipes 3, please refer to Figure 1 First flanges 4 are installed at both ends of the valve body 1, second flanges 5 are installed at both ends of the bellows 2, the first flanges 4 at both ends of the valve body 1 are fixedly connected with the second flanges 5 at one end of the two bellows 2 through bolts respectively, second sealing rings 17 are arranged between the first flanges 4 and the second flanges 5 connected with the first flanges 4, the arrangement of the second sealing rings 17 can prevent leakage at the connection between the first flanges 4 and the second flanges 5, third flanges 6 and fourth flanges 7 are installed at both ends of the connecting pipes 3 respectively, the third flanges 6 of the two connecting pipes 3 are fixedly connected with the second flanges 5 at the other end of the two bellows 2 through bolts respectively, third sealing rings 18 are arranged between the third flanges 6 and the second flanges 5 connected with the third flanges 6, the arrangement of the third sealing rings 18 can prevent leakage at the connection between the third flanges 6 and the second flanges 5, and the fourth flanges 7 are arranged to be connected with pipes.

[0022] Please refer to Figure 2The four cylinders 8 are arranged in an annular array, and each of the four cylinders 8 penetrates the first flange 4, the third flange 6, and the two second flanges 5 between the first flange 4 and the third flange 6. The two ends of each of the cylinders 8 are provided with limiting blocks 9. A first elastic block 10 and two second elastic blocks 11 are arranged on each of the cylinders 8. One of the second elastic blocks 11 is arranged between the first flange 4 and the limiting block 9 adjacent to the first flange 4, and the other second elastic block 11 is arranged between the third flange 6 and the limiting block 9 adjacent to the third flange 6. The first elastic block 10 is arranged between the two second flanges 5. The length of the cylinder 8 is equal to the total length of the first flange 4, the two second flanges 5, the third flange 6, the first elastic block 10, and the two second elastic blocks 11. When the valve body 1 vibrates, the first elastic block 10 and the second elastic blocks 11 can play a buffering role, thereby damping the valve body 1. When the valve body 1 vibrates, the corrugated pipe 2 can deform, thereby avoiding directly pulling the connecting pipe 3 when the valve body 1 vibrates, and reducing the risk of loosening of the bolts at the connection between the connecting pipe 3 and the pipeline.

[0023] Please refer to Figure 3 The valve body 1 is rotatably provided with a valve rod 12. The valve body 1 is internally provided with a valve plate 13, and the valve plate 13 is fixed on the valve rod 12. A first sealing ring 14 is arranged between the inner side wall of the valve body 1 and the valve plate 13, and the first sealing ring 14 is fixed with the valve body 1. When the valve plate 13 is parallel to the inlet and outlet of the valve body 1, the first sealing ring 14 can exactly seal the gap between the valve plate 13 and the inner side wall of the valve body 1. The valve body 1 is provided with a worm gear box 15, the output end of the worm gear box 15 is connected with the valve rod 12, and the input end of the worm gear box 15 is provided with a hand wheel 16. By rotating the hand wheel 16, the valve rod 12 can be driven to rotate, the opening angle of the valve plate 13 can be controlled through the valve rod 12, and the worm gear box 15 can play a self-locking role of the valve plate 13. When the hand wheel 16 is not rotated, the valve plate 13 will not rotate due to the impact of the fluid.

[0024] The first elastic block 10 and the second elastic block 11 are both rubber blocks, which have good elasticity and low cost, and are suitable for use as buffer materials. The first elastic block 10 is in the shape of a cylinder, and an axial through hole is arranged at the center of the circular bottom surface of the first elastic block 10, and the cylinder 8 penetrates through the through hole. The second elastic block 11 is in the shape of a circular sheet, and a through hole is arranged at the center of the second elastic block 11, and the cylinder 8 penetrates through the through hole.

[0025] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A butterfly valve with high sealing function and shock absorption function, comprising a valve body (1), two corrugated pipes (2) and two connecting pipes (3), characterized in that: Both ends of the valve body (1) are provided with first flanges (4), both ends of the corrugated pipe (2) are provided with second flanges (5), the first flanges (4) of both ends of the valve body (1) are fixedly connected with the second flanges (5) of one end of the two corrugated pipes (2) through bolts, both ends of the connecting pipe (3) are provided with third flanges (6) and fourth flanges (7), the third flanges (6) of the two connecting pipes (3) are fixedly connected with the second flanges (5) of the other end of the two corrugated pipes (2) through bolts; Four cylinders (8) are arranged between the first flange (4) and the nearest third flange (6) in an annular array, the four cylinders (8) penetrate the first flange (4), the third flange (6) and the two second flanges (5) between the two flanges at the same time, both ends of each cylinder (8) are provided with limit blocks (9), a first elastic block (10) and two second elastic blocks (11) are arranged on each cylinder (8), one of the second elastic blocks (11) is located between the first flange (4) and the adjacent limit block (9), the other second elastic block (11) is located between the third flange (6) and the adjacent limit block (9), and the first elastic block (10) is located between the two second flanges (5).

2. The butterfly valve with high sealing function and shock absorption according to claim 1, characterized in that: The valve body (1) is rotatably provided with a valve rod (12), the valve body (1) is provided with a valve plate (13) inside, the valve plate (13) is fixed on the valve rod (12), a first sealing ring (14) is arranged between the inner side wall of the valve body (1) and the valve plate (13), the first sealing ring (14) is fixed with the valve body (1), a worm gear box (15) is arranged on the valve body (1), an output end of the worm gear box (15) is connected with the valve rod (12), and a hand wheel (16) is arranged on an input end of the worm gear box (15).

3. The butterfly valve with high sealing function and shock absorption according to claim 1, characterized in that: A second sealing ring (17) is arranged between the first flange (4) and the second flange (5) connected therewith.

4. The butterfly valve with high sealing function and shock absorption according to claim 1, characterized in that: A third sealing ring (18) is arranged between the third flange (6) and the second flange (5) connected therewith.

5. The butterfly valve with high sealing function and shock absorption according to claim 1, characterized in that: The first elastic block (10) is in the shape of a cylinder, and an axial through hole is arranged at the center of the circular bottom surface of the first elastic block (10), and the cylinder (8) penetrates the through hole.

6. The butterfly valve with high sealing function and shock absorption according to claim 1, characterized in that: The second elastic block (11) is in the shape of a circular sheet, and a through hole is arranged at the center of the second elastic block (11), and the cylinder (8) penetrates the through hole.

7. The butterfly valve with high sealing function and shock absorption according to claim 1, characterized in that: Both the first elastic block (10) and the second elastic block (11) are rubber blocks.

8. The butterfly valve with high sealing function and shock absorption according to claim 1, characterized in that: The length of the cylinder (8) is equal to the overall length of one first flange (4), two second flanges (5), one third flange (6), one first elastic block (10) and two second elastic blocks (11).

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