Leakage-proof butterfly valve

Abstract

The invention belongs to the technical field of butterfly valves, and particularly discloses a leakage-proof butterfly valve which comprises a valve body, a valve plate and a valve rod, the valve plate is embedded in the valve body, the valve rod is fixedly connected with the valve plate, one end of the valve rod extends to the upper portion of the interior of the valve body, a handle is fixedly installed on the outer side of the valve rod, and a water inlet pipe is installed at one end of the valve body in a communicating mode. Mounting blocks are fixedly arranged on the two sides of the exterior of the valve body, frame rods are fixedly arranged on the outer walls of one sides of the two mounting blocks, rotating pieces are arranged in the middles of the interiors of the frame rods, pressure relief assemblies are arranged on the inner sides of the rotating pieces, and filter material assemblies are arranged on the sides, away from the pressure relief assemblies, of the interiors of the water inlet pipes; the butterfly valve can be decompressed, so that the problem that the valve plate cannot be opened due to overlarge pressure is avoided, impurities can be filtered at the front end, and use of the butterfly valve is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field related to butterfly valves, and specifically discloses a leak-proof butterfly valve. Background Art

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

[0003] When the existing butterfly valve is in use, the manual opening and closing valve plate will be difficult to open due to water pressure problems, which will increase the internal pressure of the valve. After long-term use, hard wear will occur between the valve stem and the valve plate, and poor sealing problems such as leakage will occur, which will seriously affect the service life of the butterfly valve. For this reason, we need to make improvements. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the background technology, and a leak-proof butterfly valve is proposed, including a valve body, a valve plate and a valve stem, the valve plate is embedded in the interior of the valve body, the valve stem is fixedly connected to the valve plate, and one end extends to the upper part of the interior of the valve body, a handle is fixedly installed on the outside of the valve stem, one end of the valve body is connected to an inlet pipe, and the other end is connected to an outlet pipe, mounting blocks are fixedly installed on both sides of the exterior of the valve body, and racks are fixedly installed on the outer walls of one side of two groups of mounting blocks, a rotating part is arranged in the middle of the rack, a pressure relief assembly is arranged on the inner side of the rotating part, and a filter material assembly is arranged on the inside of the water inlet pipe and on the side away from the pressure relief assembly; The pressure relief assembly can rotate in the middle of the frame rod, and can be closed at the front end of the water inlet pipe when the valve plate is opened to reduce the pressure of the valve plate, and can rotate flexibly.

[0005] Preferably, the rotating member includes a rotating rod rotatably inserted into the frame rod and the water inlet pipe, a base is sealably provided outside the water inlet pipe and below the rotating rod, the base is sealably rotatably connected to the rotating rod, and the pressure relief assembly is arranged on the inner side of the rotating rod.

[0006] Preferably, the pressure relief assembly comprises a pressure relief plate embedded in the inner side of the rotating rod, elastic rolling assemblies are arranged on both sides of the rotating rod, and a spiral assembly is arranged on the outer side of the rotating rod.

[0007] Preferably, the elastic rolling assembly includes a clamping rod fixedly mounted on the outer wall of one side of the rotating rod, a fixing block is fixedly arranged in the middle of the outer side of the clamping rod, a tube rod is fixedly arranged on the outer wall of one side of the fixing block, a spring is arranged inside the tube rod, a push rod is arranged inside the tube rod and at one end close to the spring, a splint is fixedly mounted on the outer side of the push rod, the splint is arranged in an arc shape, and a ball is movably embedded inside one end of the push rod.

[0008] Preferably, the spiral assembly includes a toothed disc fixedly sleeved on the outer side of the rotating rod, a toothed housing is embedded on the outside of the toothed disc, a screw cover is connected to the outer side of the toothed housing via a connecting block, a plurality of protrusions are installed on the outer surface of the toothed housing, and a shell resistance assembly is provided on one side of the outer side of the toothed housing.

[0009] Preferably, the housing assembly includes a housing that is clamped on one side of the outer side of the gear housing, and a plurality of groups of slots for fitting the clamping protrusions are provided inside the housing. The end of the housing away from the gear housing is rotatably connected to a screw rod, and a housing is fixedly provided on the outer wall of one side of the frame rod. The housing slides inside the housing, and a vertical rod is installed on the outer wall of the housing, and the screw and the vertical rod are threadedly connected.

[0010] Preferably, the filter material assembly includes a clamping ring fixedly arranged inside the water inlet pipe and away from one end of the pressure relief plate, a filter screen is installed inside the clamping ring, the filter screen is in sliding contact with the ball bearing, a material guide trough is arranged inside the water inlet pipe, a discharge assembly is arranged below the material guide trough, and the material guide trough is located at the front end of the filter screen.

[0011] Preferably, the discharge assembly comprises a discharge pipe which is connected and installed at the lower part of the material guide trough, and an end of the discharge pipe which is away from the water inlet pipe is externally threadedly connected with a sealing plug.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the inlet pipe and outlet pipe, the valve body can be quickly connected to the external water pipeline, and a pressure relief component is set inside the inlet pipe. When the valve plate is used for opening and closing, the water flow entering the water inlet pipe can be closed through the pressure relief plate. When the valve plate is rotated inside the valve body to open, the pressure relief plate is rotated to the water flow state to protect the valve plate; 2. By setting up the filter assembly and the discharge assembly, the water entering the valve body can filter impurities through the filter at the clamping ring when flowing into the water inlet pipe, thereby ensuring that the use of the valve plate will not be affected.

[0013] 3. By setting up the elastic rolling assembly and rotating parts, each time the pressure relief plate is used, the lever and the ball can be driven to contact one side of the filter, and then the impurities at the front end of the filter can be contacted by touching, and then the impurities filtered on the surface of the filter can be drained to the feed trough to ensure the filtering effect of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of another angle of the present invention; Figure 3This is a schematic diagram of the connection structure of the inner part of the water inlet pipe of the present invention; Figure 4 It is a schematic diagram of the connection structure between the elastic rolling assembly and the rotating rod of the present invention; Figure 5 It is a schematic diagram of the disassembled connection structure between the screw cover, the toothed disc and the toothed housing of the present invention; Figure 6 It is a schematic diagram of the connection structure of the shell-retaining assembly of the present invention.

[0015] In the figure: 1. valve body; 2. handle; 3. valve plate; 4. water outlet pipe; 5. mounting block; 6. support rod; 7. screw cover; 8. water inlet pipe; 9. drainage pipe; 10. valve stem; 11. sealing plug; 12. feed trough; 13. retaining ring; 14. retaining rod; 15. connecting block; 16. retaining seat; 17. screw rod; 18. vertical rod; 19. base; 20. rotating rod; 21. filter screen; 22. gear housing; 23. pressure relief plate; 24. fixing block; 25. cylinder rod; 26. retaining rod; 27. spring; 28. ball; 29. ​​splint; 30. toothed disc; 31. housing; 32. slot. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] like Figure 1-Figure 6 A leakproof butterfly valve is shown, comprising a valve body 1, a valve plate 3 and a valve stem 10, wherein the valve plate 3 is embedded in the interior of the valve body 1, the valve stem 10 is fixedly connected to the valve plate 3, and one end of the valve stem 10 extends to the upper part of the interior of the valve body 1, a handle 2 is fixedly installed on the outside of the valve stem 10, one end of the valve body 1 is connected to an inlet pipe 8, and the other end is connected to an outlet pipe 4, mounting blocks 5 are fixedly installed on both sides of the exterior of the valve body 1, and a rack rod 6 is fixedly installed on the outer wall of one side of the two groups of mounting blocks 5, a rotating part is arranged in the middle of the rack rod 6, a pressure relief component is arranged on the inner side of the rotating part, and a filter material component is arranged on the side of the inlet pipe 8 away from the pressure relief component; Reference Manual Attached Figure 1 and Figure 2 It can be seen that both the water inlet pipe 8 and the water outlet pipe 4 are used in pipes with flanges, which can be easily installed when connected to external water pipes; The valve body 1, the valve plate 3 and the valve stem 10 are the well-known basic structures of the butterfly valve, and will not be described in detail.

[0019] The pressure relief assembly can rotate in the middle of the frame rod 6, and can then be closed at the front end of the water inlet pipe 8 when the valve plate 3 is opened, so that the incoming water flow will not be congested at the front end of the valve plate 3, causing difficulty in opening the valve plate 3, thereby reducing the pressure on the valve plate 3.

[0020] The rotating member includes a rotating rod 20 that is rotatably inserted into the frame rod 6 and the water inlet pipe 8. A base 19 is sealed and arranged outside the water inlet pipe 8 and below the rotating rod 20. The base 19 is rotatably connected to the rotating rod 20. The pressure relief assembly is arranged inside the rotating rod 20. Reference Manual Attached Figure 3 It can be seen that the connection of the base 19 allows the rotating rod 20 to rotate well inside the water inlet pipe 8, and the sealing is guaranteed, thereby avoiding leakage problems.

[0021] The pressure relief assembly includes a pressure relief plate 23 embedded in the inner side of the rotating rod 20, elastic rolling assemblies are arranged on both sides of the rotating rod 20, and a spiral assembly is arranged on the outer side of the rotating rod 20; Reference Manual Attached Figure 1 and Figure 2 It can be seen that under the connection of the spiral assembly, the rotating rod 20 can be controlled to rotate, thereby driving the pressure relief plate 23 to rotate.

[0022] The elastic rolling assembly includes a clamping rod 14 fixedly mounted on the outer wall of one side of the rotating rod 20, a fixing block 24 is fixedly arranged in the middle of the outer side of the clamping rod 14, a barrel rod 25 is fixedly arranged on the outer wall of one side of the fixing block 24, a spring 27 is arranged inside the barrel rod 25, a push rod 26 is arranged inside the barrel rod 25 and at one end close to the spring 27, a clamping plate 29 is fixedly sleeved on the outer side of the push rod 26, the clamping plate 29 is arranged in an arc shape, and a ball 28 is movably embedded inside one end of the push rod 26; Reference Manual Attached Figure 3 and Figure 4 It can be seen that the connection between the clamping rod 14 and the barrel rod 25 can make the push rod 26 rotate synchronously with the rotation of the pressure relief plate 23 and the rotating rod 20. When rotating, the push rod 26 will contact the surface of the filter material assembly and then contact the inner wall of the water inlet pipe 8. The setting of the spring 27 can make the push rod 26 retract well into the barrel rod 25. It should be specially noted that the push rod 26 and the clamping plate 29 are made of rubber material. Therefore, when the pressure relief plate 23 rotates inside the water inlet pipe 8, it will not block the rotation of the pressure relief plate 23; In addition, when the support rod 26 contacts the filter material assembly, the arc-shaped external clamping plate 29 can contact the upper and lower surfaces of the filter material assembly during rotation. Therefore, during rotation, the contact area can be increased while the structure will not increase the resistance of the rotating pressure relief plate 23, thereby preventing impurities from being blocked at a certain position of the filter material assembly, thereby affecting the filtering effect.

[0023] The spiral assembly includes a toothed disc 30 fixedly sleeved on the outer side of the rotating rod 20, a toothed housing 22 is embedded on the outer side of the toothed disc 30, a screw cover 7 is connected to the outer side of the toothed housing 22 through a connecting block 15, a plurality of protrusions are installed on the outer surface of the toothed housing 22, and a housing-resisting assembly is arranged on one side of the outer side of the toothed housing 22; Reference Manual Attached Figure 5 It can be seen that the screw cover 7 can control the rotation of the gear disc 30 and the gear housing 22 at the lower end by screwing, and further control the rotation direction of the rotating rod 20.

[0024] The housing component includes a housing 16 that is clamped on one side of the outer side of the gear housing 22, and a plurality of clamping grooves 32 adapted to the clamping protrusions are provided inside the housing 16. The end of the housing 16 away from the gear housing 22 is rotatably connected to a screw 17, and a housing 31 is fixedly provided on the outer wall of one side of the frame rod 6. The housing 16 slides inside the housing 31, and a vertical rod 18 is installed on the outer wall of the housing 31. The screw 17 and the vertical rod 18 are threadedly connected; Reference Manual Attached Figure 2 and Figure 6 It can be seen that by rotating the screw 17, the front end of the stopper 16 can be driven to move toward the front end of the card shell 31 until the stopper 16 contacts the outer surface of the gear housing 22. When water flows in, the pressure relief plate 23 can be controlled to block the passage. The engagement of the slot 32 and the protrusion can enhance the fit of the stop 16 , thereby ensuring that the pressure relief plate 23 does not rotate when water flows in.

[0025] The filter material assembly includes a clamping ring 13 fixedly arranged inside the water inlet pipe 8 and away from one end of the pressure relief plate 23, a filter screen 21 is installed inside the clamping ring 13, and the filter screen 21 is in sliding contact with the ball bearing 28. A material guide groove 12 is arranged inside the water inlet pipe 8, and a material discharge assembly is arranged below the material guide groove 12. The material guide groove 12 is located at the front end of the filter screen 21; Reference Manual Attached Figure 3 It can be seen that the filter screen 21 can be set at the internal front end of the water inlet pipe 8 for filtering impurities when it is clamped by the clamping ring 13. The impurities can be guided by the set material guide groove 12. The ball 28 can roll with the surface of the filter screen 21 under the rotation of the rotating rod 20 and the barrel rod 25, thereby enhancing the filtering effect of the filter screen 21.

[0026] The material discharge assembly includes a discharge pipe 9 which is connected to and installed at the lower part of the material guide trough 12, and a sealing plug 11 is externally threadedly connected to one end of the discharge pipe 9 away from the water inlet pipe 8; Reference Manual Attached Figure 1 and Figure 3 It can be seen that the intermediate groove in the middle of the feed trough 12 allows the granular impurities to flow into the impurity discharge pipe 9 at the bottom, so as to ensure that the impurities can be discharged from the outside of the water inlet pipe 8 later.

[0027] Working principle: When in use, the water inlet pipe 8 can be connected to the external pipeline. When the water flows, the rotating rod 20 and the pressure relief plate 23 can be closed at the front end of the valve plate 3, so that the water entering the water inlet pipe 8 is blocked by the pressure relief plate 23. At this time, the valve stem 10 and the valve plate 3 are controlled to rotate through the connection of the handle 2. After the valve plate 3 rotates, the passages on both sides can flow, and then the screw cover 7 is rotated by screwing, so that the screw cover 7 drives the toothed disc 30 to rotate. At this time, the rotating rod 20 can drive the pressure relief plate 23 to rotate to open the passages on both sides, and the water flows through the opened passages inside the valve body 1. This method makes the valve The opening of the plate 3 is smoother, which increases the protection of the valve plate 3 and will not be difficult to open due to water pressure problems. When the rotating rod 20 rotates, the support rod 26 and the clamping plate 29 will contact the surface of the filter screen 21 inside the front end clamping ring 13, so that the filter screen 21 can be touched, thereby reducing the blockage of the filter screen 21, ensuring that when the water flows into the valve body 1, impurities will not affect the use of the valve body 1, and the particulate impurities blocked by the filter screen 21 are drained into the feed trough 12, and then discharged into the water inlet pipe 8 through the drainage pipe 9. Later, the sealing plug 11 is rotated to discharge the impurities inside the drainage pipe 9.

[0028] 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, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A leakproof butterfly valve, comprising a valve body (1), a valve plate (3) and a valve stem (10), characterized in that: The valve plate (3) is embedded in the interior of the valve body (1); the valve stem (10) is fixedly connected to the valve plate (3), and one end of the valve stem (10) extends to the upper part of the interior of the valve body (1); a handle (2) is fixedly installed on the outside of the valve stem (10); one end of the valve body (1) is connected to a water inlet pipe (8) and the other end is connected to a water outlet pipe (4); mounting blocks (5) are fixedly installed on both sides of the exterior of the valve body (1); a rack rod (6) is fixedly installed on the outer wall of one side of the two groups of mounting blocks (5); a rotating part is arranged in the middle of the rack rod (6); a pressure relief component is arranged on the inner side of the rotating part; and a filter material component is arranged inside the water inlet pipe (8) and on a side away from the pressure relief component; The pressure relief assembly can rotate in the middle of the frame rod (6), and can be closed at the front end of the water inlet pipe (8) when the valve plate (3) is opened, so as to reduce the pressure of the valve plate (3), and can rotate flexibly.

2. A leakproof butterfly valve according to claim 1, characterized in that: The rotating member comprises a rotating rod (20) which is rotatably inserted into the frame rod (6) and the water inlet pipe (8); a base (19) is sealably provided outside the water inlet pipe (8) and below the rotating rod (20); the base (19) is sealably rotatably connected to the rotating rod (20); and the pressure relief assembly is provided on the inner side of the rotating rod (20).

3. A leakproof butterfly valve according to claim 1, characterized in that: The pressure relief assembly comprises a pressure relief plate (23) embedded inside a rotating rod (20), elastic rolling assemblies are arranged on both sides of the rotating rod (20), and a spiral assembly is arranged on the outside of the rotating rod (20).

4. A leakproof butterfly valve according to claim 3, characterized in that: The elastic rolling assembly comprises a clamping rod (14) fixedly mounted on an outer wall of one side of a rotating rod (20); a fixing block (24) is fixedly arranged in the middle of the outer side of the clamping rod (14); a tube rod (25) is fixedly arranged on the outer wall of one side of the fixing block (24); a spring (27) is arranged inside the tube rod (25); a support rod (26) is arranged inside the tube rod (25) and at one end close to the spring (27); a clamping plate (29) is fixedly sleeved on the outer side of the support rod (26); the clamping plate (29) is arranged in an arc shape; and a ball (28) is movably embedded inside one end of the support rod (26).

5. The leakproof butterfly valve according to claim 3, characterized in that: The screw assembly comprises a toothed disc (30) fixedly sleeved on the upper outer side of the rotating rod (20), a toothed housing (22) being embedded on the outer side of the toothed disc (30), a screw cover (7) being connected to the outer side of the toothed housing (22) via a connecting block (15), a plurality of protrusions being installed on the outer surface of the toothed housing (22), and a housing-resisting assembly being arranged on one side of the outer side of the toothed housing (22).

6. A leakproof butterfly valve according to claim 5, characterized in that: The housing-receiving assembly comprises a housing (16) that is clamped against an outer side of a gear housing (22); a plurality of clamping grooves (32) adapted to fit the clamping protrusions are provided inside the housing (16); an end of the housing (16) away from the gear housing (22) is rotatably connected to a screw rod (17); a housing (31) is fixedly provided on an outer wall of one side of the frame rod (6); the housing (16) slides inside the housing (31); a vertical rod (18) is installed on the outer wall of the housing (31); and the screw rod (17) is threadedly connected to the vertical rod (18).

7. The leakproof butterfly valve according to claim 3, characterized in that: The filter material assembly comprises a clamping ring (13) fixedly arranged inside the water inlet pipe (8) and away from one end of the pressure relief plate (23); a filter screen (21) is installed inside the clamping ring (13); the filter screen (21) is in sliding contact with the ball bearing (28); a material guide trough (12) is arranged inside the water inlet pipe (8); a material discharge assembly is arranged below the material guide trough (12); and the material guide trough (12) is located at the front end of the filter screen (21).

8. The leakproof butterfly valve according to claim 7, characterized in that: The material discharge assembly comprises a waste discharge pipe (9) which is connected to and installed at the lower part of the inner part of the material guide trough (12); one end of the waste discharge pipe (9) which is away from the water inlet pipe (8) is externally threadedly connected to a sealing plug (11).

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