A low-emission valve

Abstract

The utility model discloses a low-emission valve, which relates to the field of valve technology, including a valve housing, a connecting pipe is provided on the side of the valve housing, a mounting seat is provided on the top of the valve housing, a sealing ring is provided in the middle of the mounting seat, a rotating rod is provided in the middle of the sealing ring, a valve body is provided at the bottom end of the rotating rod, a protective component is provided on the outside of the mounting seat, a connecting flange is provided on one side of the connecting pipe, and a connecting component is provided on the outside of the connecting flange. The utility model protects the connection between the rotating rod, the sealing ring and the mounting seat through the protective component, prevents dust from accumulating on the surface of the mounting seat and the sealing ring, which accelerates the aging of the sealing ring, affects the sealing effect of the sealing ring on the device, and causes the valve to escape, and at the same time prevents dust from accumulating on the rotating rod, causing dust to enter the interior of the valve body along the rotating rod, affecting the use of the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a low-emission valve. Background Art

[0002] A ball valve is a valve whose opening and closing parts are driven by the valve stem and rotate around the axis of the valve stem. It is used in hydraulic machinery and equipment, hydraulic switches, natural gas, etc. The ball valve was introduced in the 1950s. With the rapid development of science and technology, the continuous improvement of production technology and product structure, it has rapidly developed into a major valve type in just forty years.

[0003] When the ball valve stem has not been rotated for a long time, a large amount of dust will fall on its surface. When the stem is rotated, the stem will bring the dust on its surface into the threaded groove inside the ball valve, causing the ball valve to be unable to fully close, thereby causing internal leakage of the ball valve. In addition, the sealing ring between the flange connection on the ball valve will expand and contract due to temperature, resulting in poor air tightness at the flange connection and gas leakage. Therefore, it is necessary to provide a low-emission valve to solve the problem. Utility Model Content

[0004] The main purpose of the utility model is to provide a low-emission valve, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A low-emission valve comprises a valve housing, a connecting pipe is arranged on the side of the valve housing, a mounting seat is arranged on the top of the valve housing, a sealing ring is arranged in the middle of the mounting seat, a rotating rod is arranged in the middle of the sealing ring, a valve body is arranged at the bottom end of the rotating rod, a protective component is arranged outside the mounting seat, a connecting flange is arranged on one side of the connecting pipe, and a connecting component is arranged outside the connecting flange;

[0007] The protection component includes a protection cover, an anti-slip groove is arranged on the outer wall of the protection cover, a slide groove is arranged on the inner wall of the bottom of the protection cover, and an arc-shaped limit groove is arranged on the top of the slide groove, an L-shaped mounting plate is arranged on the outer wall of the protection cover, and a limit slide rod is arranged on the side of the L-shaped mounting plate, a pulling plate is arranged at one end of the limit slide rod, and a connecting spring is arranged on the side of the pulling plate;

[0008] The connection assembly comprises a mounting clamp, a mounting ear plate is arranged on the side of the mounting clamp, a fixing bolt is arranged in the middle of the mounting ear plate, and a sealing cover is arranged in the middle of the mounting clamp.

[0009] Preferably, the outer wall of the valve body is in contact with the inner wall of the valve housing, and the connecting pipe and the valve body are connected to each other, the end of the connecting pipe away from the valve body is fixedly connected to the connecting flange, the valve body is fixedly connected to the rotating rod, and the rotating rod passes through the mounting seat and the sealing ring, and a limited slot is opened on the top outer wall of the valve housing.

[0010] Preferably, the bottom of the protective cover is inserted into the inside of the limiting slot, the inner wall of the protective cover contacts the outer wall of the mounting seat, a limiting block is fixedly connected to the top outer wall of the mounting seat, and there are two limiting blocks, which are symmetrically distributed on both sides of the top of the mounting seat, and a limiting slot is opened on the outer wall of the mounting seat, and the limiting slot is located below the limiting block.

[0011] Preferably, there are multiple anti-slip grooves, which are evenly distributed on the outer wall of the protective cover, and there are two slide grooves, which are symmetrically distributed on the bottom inner wall of the protective cover, and the slide groove is slidably connected to the limit block. The height of the slide groove is the same as the height of the upper limit block on the outer wall of the mounting seat, and the slide groove is connected to the arc-shaped limit groove, and the arc-shaped limit groove is opened at the top of the slide groove.

[0012] Preferably, the protective cover is fixedly connected to the L-shaped mounting plate, and there are two L-shaped mounting plates, which are symmetrically distributed on both sides of the outside of the protective cover. The middle of the side surface of the L-shaped mounting plate is slidably connected to the limit slide rod, and the limit slide rod is fixedly connected to the pulling plate. The end of the limit slide rod away from the pulling plate passes through the protective cover and is connected to the inside of the limit groove on the outer wall of the mounting seat. The pulling plate is fixedly connected to the connecting spring, and the end of the connecting spring away from the pulling plate is fixedly connected to the side surface of the L-shaped mounting plate.

[0013] Preferably, the mounting clamp is clamped on the outside of the connecting flange, the mounting clamp is fixedly connected to the mounting ear plate, and there are two mounting ear plates, which are symmetrically distributed at both ends of the mounting clamp, and there are two mounting clamps, which are symmetrically distributed at the top and bottom of the connecting flange, and the two mounting clamps are connected by fixing bolts passing through the mounting ear plates, the mounting clamp is fixedly connected to the sealing cover, and the inner wall of the sealing cover is in contact with the outer wall of the connecting flange.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The protective components are set to protect the connection between the rotating rod, the sealing ring and the mounting seat, to prevent dust from accumulating on the surface of the mounting seat and the sealing ring, accelerating the aging of the sealing ring, affecting the sealing effect of the sealing ring on the device, and causing the valve to escape. At the same time, dust is prevented from accumulating on the rotating rod, causing dust to enter the interior of the valve body along the rotating rod, affecting the use of the valve body;

[0016] 2. The connection between the valve and the pipeline is achieved through the provided connection assembly, and the two connecting flanges are further sealed through the provided two mounting clamps and sealing covers, thereby improving the sealing effect of the pipeline connection, reducing the occurrence of leakage, and improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model device;

[0018] Figure 2 It is a structural schematic diagram of the cross section of the device of the utility model;

[0019] Figure 3 This utility model Figure 2 The enlarged structural diagram at A in the middle;

[0020] Figure 4 It is a schematic diagram of the structure of the protective assembly of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the connection component of the utility model.

[0022] In the figure: 1. valve housing; 2. connecting pipe; 3. valve body; 4. mounting seat; 5. sealing ring; 6. rotating rod; 7. protective assembly; 8. protective cover; 9. anti-slip groove; 10. limiting slot; 11. limiting block; 12. slide groove; 13. arc-shaped limiting groove; 14. L-shaped mounting plate; 15. limiting slide rod; 16. pulling plate; 17. connecting spring; 18. connecting assembly; 19. mounting clamp; 20. mounting ear plate; 21. fixing bolt; 22. sealing cover; 23. connecting flange. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-Figure 5 As shown, a low-emission valve comprises a valve housing 1, a connecting pipe 2 is arranged on the side of the valve housing 1, and a mounting seat 4 is arranged on the top of the valve housing 1, a sealing ring 5 is arranged in the middle of the mounting seat 4, and a rotating rod 6 is arranged in the middle of the sealing ring 5, a valve body 3 is arranged at the bottom end of the rotating rod 6, a protective component 7 is arranged on the outside of the mounting seat 4, a connecting flange 23 is arranged on one side of the connecting pipe 2, and a connecting component 18 is arranged on the outside of the connecting flange 23, the outer wall of the valve body 3 is fitted with the inner wall of the valve housing 1, and the connecting pipe 2 and the valve body 3 are communicated with each other, one end of the connecting pipe 2 away from the valve body 3 is fixedly connected to the connecting flange 23, the valve body 3 is fixedly connected to the rotating rod 6, and the rotating rod 6 passes through the mounting seat 4 and the sealing ring 5, and a limited position slot 10 is provided on the top outer wall of the valve housing 1;

[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the protection assembly 7 includes a protection cover 8, an anti-slip groove 9 is arranged on the outer wall of the protection cover 8, and a slide groove 12 is arranged on the inner wall of the bottom of the protection cover 8, and an arc-shaped limit groove 13 is arranged on the top of the slide groove 12, an L-shaped mounting plate 14 is arranged on the outer wall of the protection cover 8, and a limit slide rod 15 is arranged on the side of the L-shaped mounting plate 14, a pulling plate 16 is arranged at one end of the limit slide rod 15, and a connecting spring 17 is arranged on the side of the pulling plate 16, the bottom of the protection cover 8 is inserted into the inside of the limit slot 10, and the inner wall of the protection cover 8 is connected to the inner wall of the protection cover 8. The outer wall of the mounting seat 4 is in contact with each other, and a limit block 11 is fixedly connected to the top outer wall of the mounting seat 4, and there are two limit blocks 11, which are symmetrically distributed on both sides of the top of the mounting seat 4, and a limit groove is provided on the outer wall of the mounting seat 4, and the limit groove is located below the limit block 11, and there are multiple anti-slip grooves 9, which are evenly distributed on the outer wall of the protective cover 8, and there are two slide grooves 12, which are symmetrically distributed on the bottom inner wall of the protective cover 8, and the slide groove 12 is slidably connected with the limit block 11, and the height of the slide groove 12 is the same as the upper limit block 1 on the outer wall of the mounting seat 4. 1 has the same height, the slide groove 12 and the arc-shaped limit groove 13 are connected to each other, and the arc-shaped limit groove 13 is opened at the top of the slide groove 12, the protective cover 8 is fixedly connected to the L-shaped mounting plate 14, and there are two L-shaped mounting plates 14, which are symmetrically distributed on both sides of the outside of the protective cover 8, and the middle of the side of the L-shaped mounting plate 14 is slidably connected to the limit slide rod 15, and the limit slide rod 15 is fixedly connected to the pulling plate 16, and the end of the limit slide rod 15 away from the pulling plate 16 passes through the protective cover 8 and is connected to the inside of the limit groove on the outer wall of the mounting seat 4, and the pulling plate 16 is connected to the protective cover 8. The connecting spring 17 is fixedly connected, and the side of the L-shaped mounting plate 14 at one end of the connecting spring 17 away from the pulling plate 16 is fixedly connected. The protective component 7 is provided to protect the connection between the rotating rod 6, the sealing ring 5 and the mounting seat 4, so as to prevent dust from accumulating on the surface of the mounting seat 4 and the sealing ring 5 to accelerate the aging of the sealing ring 5, affect the sealing effect of the sealing ring 5 on the device, and cause the valve to escape. At the same time, dust is prevented from accumulating on the rotating rod 6, causing dust to enter the interior of the valve body 3 along the rotating rod 6, and affect the use of the valve body 3;

[0026] See also Figure 1 , Figure 2 , Figure 5As shown, the connecting assembly 18 includes a mounting clamp 19, a mounting ear plate 20 is arranged on the side of the mounting clamp 19, a fixing bolt 21 is arranged in the middle of the mounting ear plate 20, a sealing cover 22 is arranged in the middle of the mounting clamp 19, the mounting clamp 19 is clamped on the outside of the connecting flange 23, the mounting clamp 19 is fixedly connected to the mounting ear plate 20, and there are two mounting ear plates 20, which are symmetrically distributed at both ends of the mounting clamp 19, and there are two mounting clamps 19, which are symmetrically distributed at the top and bottom of the connecting flange 23, and the two mounting clamps 19 are connected by penetrating the mounting ear plate 20 through the fixing bolts 21, the mounting clamp 19 is fixedly connected to the sealing cover 22, and the inner wall of the sealing cover 22 is in contact with the outer wall of the connecting flange 23, the connection between the valve and the pipeline is realized by the setting of the connecting assembly 18, and the two connecting flanges 23 are further sealed by the setting of the two mounting clamps 19 and the sealing cover 22, thereby improving the sealing effect of the pipeline connection, reducing the occurrence of leakage, and improving the safety of the device.

[0027] It should be noted that the utility model is a low-emission valve. When in use, the protective cover 8 is clamped on the outside of the mounting seat 4, the slide groove 12 on the inner wall of the protective cover 8 is aligned with the limit block 11 on the outer wall of the mounting seat 4, and the protective cover 8 is pushed to make the limit block 11 slide inside the slide groove 12, so that the bottom of the protective cover 8 is inserted into the limit slot 10 on the top of the valve housing 1, and at the same time, the limit block 11 slides to the top of the slide groove 12, and then the protective cover 8 is rotated clockwise to make the limit block 11 rotate along the arc-shaped limit slot 13, thereby realizing the first limit of the protective cover 8. At the same time, the outer wall of the protective cover 8 is provided with an anti-slip groove 9, thereby increasing the friction of the contact area and facilitating the rotation of the protective cover 8, and then the pulling plate 16 on the side of the L-shaped mounting plate 14 is pulled to make the pulling plate 16 realize the stretching of the connecting spring 17 and the limit slide rod 15. When the protective cover 8 is inserted in the limit slot 10 After the valve is installed inside, release the pulling plate 16, so that the connecting spring 17 drives the limiting slide bar 15 to rebound, so that the end of the limiting slide bar 15 away from the pulling plate 16 is inserted into the limiting groove on the outer wall of the mounting seat 4, thereby further connecting the protective cover 8 with the mounting seat 4, increasing the connection stability, and facilitating the disassembly of the protective cover 8, improving the convenience of use of the device, thereby completing the protection of the mounting seat 4, the sealing ring 5 and the rotating rod 6, preventing dust accumulation and affecting the service life of the device, and then clamping the two mounting clamps 19 at the top and bottom of the two connecting flanges 23, thereby realizing the connection between the valve and the pipeline, and making the fixing bolts 21 pass through the two mounting ear plates 20, thereby realizing the fixation of the two mounting clamps 19, and a sealing cover 22 is installed inside the mounting clamp 19, and the interior of the sealing cover 22 is tightly fitted with the outer wall of the connecting flange 23, thereby improving the sealing effect of the connection.

[0028] The above shows and describes the basic principle and main features of the utility model and the 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 are only for explaining the principle 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 utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A low-emission valve, comprising a valve housing (1), characterized in that: A connecting pipe (2) is arranged on the side of the valve housing (1), and a mounting seat (4) is arranged on the top of the valve housing (1); a sealing ring (5) is arranged in the middle of the mounting seat (4), and a rotating rod (6) is arranged in the middle of the sealing ring (5); a valve body (3) is arranged at the bottom end of the rotating rod (6); a protective component (7) is arranged outside the mounting seat (4); a connecting flange (23) is arranged on one side of the connecting pipe (2), and a connecting component (18) is arranged outside the connecting flange (23); The protection component (7) comprises a protection cover (8), an anti-slip groove (9) is arranged on the outer wall of the protection cover (8), a slide groove (12) is arranged on the inner wall of the bottom of the protection cover (8), and an arc-shaped limit groove (13) is arranged at the top of the slide groove (12), an L-shaped mounting plate (14) is arranged on the outer wall of the protection cover (8), and a limit slide rod (15) is arranged on the side of the L-shaped mounting plate (14), a pulling plate (16) is arranged at one end of the limit slide rod (15), and a connecting spring (17) is arranged on the side of the pulling plate (16); The connection assembly (18) comprises a mounting clamp (19), a mounting ear plate (20) is arranged on the side of the mounting clamp (19), a fixing bolt (21) is arranged in the middle of the mounting ear plate (20), and a sealing cover (22) is arranged in the middle of the mounting clamp (19).

2. A low-emission valve according to claim 1, characterized in that: The outer wall of the valve body (3) is in contact with the inner wall of the valve housing (1), and the connecting pipe (2) and the valve body (3) are in communication with each other. The end of the connecting pipe (2) away from the valve body (3) is fixedly connected to the connecting flange (23). The valve body (3) is fixedly connected to the rotating rod (6), and the rotating rod (6) passes through the mounting seat (4) and the sealing ring (5). A limiting slot (10) is provided on the top outer wall of the valve housing (1).

3. A low-emission valve according to claim 1, characterized in that: The bottom of the protective cover (8) is inserted into the interior of the limiting slot (10), the inner wall of the protective cover (8) contacts the outer wall of the mounting seat (4), a limiting block (11) is fixedly connected to the top outer wall of the mounting seat (4), and there are two limiting blocks (11), which are symmetrically distributed on both sides of the top of the mounting seat (4), and a limiting slot is provided on the outer wall of the mounting seat (4), and the limiting slot is located below the limiting block (11).

4. A low-emission valve according to claim 1, characterized in that: There are a plurality of anti-slip grooves (9) which are evenly distributed on the outer wall of the protective cover (8); there are two slide grooves (12) which are symmetrically distributed on the bottom inner wall of the protective cover (8); the slide grooves (12) are slidably connected to the limit blocks (11); the height of the slide grooves (12) is the same as the height of the upper limit blocks (11) on the outer wall of the mounting seat (4); the slide grooves (12) are connected to the arc-shaped limit grooves (13), and the arc-shaped limit grooves (13) are arranged at the top of the slide grooves (12).

5. A low emission valve according to claim 4, characterized in that: The protective cover (8) is fixedly connected to the L-shaped mounting plate (14), and there are two L-shaped mounting plates (14), which are symmetrically distributed on both sides of the outside of the protective cover (8). The middle of the side of the L-shaped mounting plate (14) is slidably connected to the limiting slide bar (15), and the limiting slide bar (15) is fixedly connected to the pulling plate (16). The end of the limiting slide bar (15) away from the pulling plate (16) passes through the protective cover (8) and is connected to the inside of the limiting groove on the outer wall of the mounting seat (4). The pulling plate (16) is fixedly connected to the connecting spring (17), and the end of the connecting spring (17) away from the pulling plate (16) is fixedly connected to the side of the L-shaped mounting plate (14).

6. A low emission valve according to claim 1, characterized in that: The mounting clamp (19) is clamped on the outside of the connecting flange (23), the mounting clamp (19) is fixedly connected to the mounting ear plate (20), and there are two mounting ear plates (20), which are symmetrically distributed at both ends of the mounting clamp (19), there are two mounting clamps (19), which are symmetrically distributed at the top and bottom of the connecting flange (23), and the two mounting clamps (19) are connected by fixing bolts (21) penetrating the mounting ear plates (20), the mounting clamp (19) is fixedly connected to the sealing cover (22), and the inner wall of the sealing cover (22) is in contact with the outer wall of the connecting flange (23).

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