Valve for conveying pipeline

Abstract

The invention provides a valve for a conveying pipeline, and belongs to the technical field of valve devices, the valve comprises a valve body, a sealing ring and a valve rod, the valve rod is provided with a sealing pressing block through a shaft sleeve, the valve body is provided with a driving assembly used for lifting the valve rod, the sealing pressing block is rotatably connected with a water storage tank, and the sealing pressing block is provided with a water inlet hole; an electric valve is installed on the water inlet hole, a rectangular groove is formed in the sealing pressing block, a telescopic plate is connected into the rectangular groove through a first compression spring, a first water outlet hole is formed in the sealing pressing block, a second water outlet hole is formed in the telescopic plate, a flow guide groove is formed in the sealing pressing block, and an extrusion plate located in the water storage tank is arranged on the valve rod. According to the stop valve, solid particles deposited on the sealing ring can fall off through the impact force of water flow, the contact area between the sealing ring and the sealing ring is increased, the valve is tightly closed, the sealing performance of the stop valve is guaranteed, and the sealing face is prevented from being abraded or even damaged.

Description

Technical Field

[0001] The present application relates to the technical field of valve devices, and in particular to a valve for a conveying pipeline. Background Art

[0002] The stop valve mainly relies on the valve stem pressure to make the valve disc sealing surface and the valve seat sealing surface tightly combined to prevent the flow of medium. During the opening and closing process, the sealing surfaces have the characteristics of small friction, wear resistance, small opening height and good manufacturing process performance. It is a valve widely used in the industrial sector. The stop valve is also often used for the transportation of acidic high-temperature lithium-containing electrolyte solid-liquid mixture. Acidic high-temperature lithium-containing electrolyte solid-liquid mixture is a liquid with solid particles suspended inside.

[0003] Referring to the Chinese patent document with announcement number CN216519861U and titled "An electric valve for oil extraction and transportation pipeline", it includes a drive assembly, a valve stem, a sealing cover, a sealing block and a sealing ring. A sealing cover is arranged on the outside of the valve stem, a sealing ring is arranged below the sealing cover, and the inner and outer surfaces of the top of the sealing ring are inclined, and a drive assembly is arranged on the sealing ring. The top of the sealing block is arranged as an inclined side surface, which can increase the contact area between the sealing ring and the sealing block. When closing the valve, the drive assembly drives the sealing ring to be tightly attached to the sealing block, which can prevent leakage between the sealing block and the sealing ring, thereby closing the valve tightly.

[0004] Referring to the above technical solution, liquid flows through the inside of the valve. When the stop valve is closed, particles may be deposited on the sealing ring surface of the valve seat during the closing process of the stop valve. When the sealing block contacts the sealing ring surface, the presence of solid particles hinders the contact between the sealing block and the valve seat sealing ring surface, which can easily cause wear or even damage to the sealing surface and easily cause loose sealing, thereby affecting the sealing performance of the stop valve. Summary of the invention

[0005] In view of this, the present application provides a valve for a conveying pipeline, which is mainly used to solve the problem of poor sealing of the stop valve caused by particles deposited on the surface of the sealing ring.

[0006] In order to solve the above technical problems, the present application provides a valve for a conveying pipeline, including a valve body, a sealing ring and a valve stem. A sealing block is provided on the valve stem through a shaft sleeve. A driving assembly for lifting the valve stem is provided on the valve body. A water storage tank is rotatably connected to the sealing block. A water inlet is provided on the sealing block. An electric valve for diverting water into the water storage tank is installed on the water inlet. A rectangular groove is provided on the sealing block. A telescopic plate is connected to the rectangular groove through a first compression spring. A first water outlet hole is provided on the sealing block. A second water outlet hole is provided on the telescopic plate. A guide groove is provided on the sealing block. The guide groove is used to guide water flow to the sealing ring. An extrusion plate located inside the water storage tank is provided on the valve stem. A cleaning assembly is installed on the water storage tank. The cleaning assembly is used to scrape off solid particles deposited on the inner wall of the valve body.

[0007] By adopting the above technical solution, the driving assembly can drive the valve stem to move up and down, and then the valve stem drives the sealing block to move, and the sealing block is pressed on the sealing ring, so as to realize the closure of the valve. When the telescopic plate is extended and retracted, the second water outlet can correspond to or be offset from the first water outlet, so that the water inside the water storage tank can flow out. Under the action of the guide groove, the water flow can impact the surface of the sealing ring and the solid particles deposited on the surface of the sealing ring. In the process of the extrusion plate squeezing downward, the water flow inside the water storage tank can rush to the first water outlet.

[0008] Optionally, the cleaning component includes a square groove opened on the water storage tank, and a scraper is connected to the square groove via a second compression spring.

[0009] By adopting the above technical solution, the water storage tank can move up and down under the action of the valve stem, the scraper is always in contact with the inner wall of the valve body, and the scraper can reciprocate and extend in the square groove under the action of the first compression spring.

[0010] Optionally, the cleaning assembly further comprises an auxiliary rod fixedly mounted on the valve stem, wherein one end surface of the auxiliary rod is fixedly connected to the extrusion plate.

[0011] By adopting the above technical solution, when the valve stem rotates, the water storage tank can be rotated synchronously through the connection of the auxiliary rod, so that the scraper abutting against the inner wall of the valve body can scrape off the deposited solid particles.

[0012] Optionally, a filter screen is provided on both the water inlet and the second water outlet, and the filter screen is used to prevent solid particles from entering the water storage tank.

[0013] By adopting the above technical solution, the filter can prevent solid particles from entering the water storage tank and prevent solid particles from being deposited inside the water storage tank.

[0014] Optionally, the drive assembly includes a sleeve fixedly mounted on the valve body, the sleeve is coaxially arranged with the valve stem, an outer surface of the valve stem and an inner wall of the sleeve are provided with engaging threads, and a rotating handwheel is installed on the valve stem.

[0015] By adopting the above technical solution, the valve stem rotates synchronously by turning the rotary handwheel, the threads on the surface of the valve stem engage with the threads on the inner wall of the sleeve, and the valve stem can be reciprocated up and down by rotating the handwheel forward or reversely.

[0016] Optionally, the water inlet hole, the first water outlet hole and the telescopic plate are all provided in plurality.

[0017] By adopting the above technical solution, the arrangement of multiple water inlet holes, the first water outlet hole and the telescopic plate can improve the working efficiency of water inlet or water outlet of the water storage tank.

[0018] Optionally, the second water outlet holes on the telescopic plate can overlap or be misaligned with the first water outlet holes during the reciprocating telescopic process.

[0019] By adopting the above technical solution, when the sealing pressing block moves up and down, the telescopic plate can move in the rectangular groove when it abuts against the sealing ring, so that the second water outlet hole can correspond to the first water outlet hole.

[0020] Optionally, the electric valve is configured as a one-way valve.

[0021] By adopting the above technical solution, the one-way valve can draw the liquid inside the valve body into the water storage tank.

[0022] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects: 1. By flushing the surface of the sealing ring with water, the solid particle sediment on the surface of the sealing ring falls off. When closing the valve, the sealing block contacts and seals the sealing ring, which can increase the contact area between the sealing ring and the sealing ring, so that the valve is tightly closed, ensuring the sealing of the stop valve, and preventing wear or even damage to the sealing surface.

[0023] 2. By setting up cleaning parts, solid particles deposited on the inner wall of the valve body can be scraped off to prevent particle deposition. When the stop valve is opened, the solid-liquid mixture can maintain a normal flow rate and reduce the flow rate reduction caused by the influence of solid particle deposition. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a valve for a conveying pipeline in this application; Figure 2 Internal section of the valve body for this application Figure 1 ; Figure 3 Internal section of the valve body for this application Figure 2 ; Figure 4 For this application, the explosion of sealing rings, sealing blocks and water storage tanks Figure 1 ; Figure 5 For this application, the explosion of sealing rings, sealing blocks and water storage tanks Figure 2 ; Figure 6 This is a cross-sectional view of the interior of the water storage tank for this application; Figure 7 This is a schematic diagram of the electric valve and sealing block structure of this application; Figure 8 This is a cross-sectional view of the sealing block for this application; Fig. 9 This is a schematic diagram of the telescopic plate and the first compression spring structure of the present application.

[0025] Explanation of the accompanying drawings: 1. Valve body; 11. Sealing ring; 12. Valve stem; 13. Sealing block; 2. Cleaning assembly; 21. Water storage tank; 22. Water inlet; 23. Electric valve; 24. Telescopic plate; 241. First compression spring; 25. First water outlet; 26. Second water outlet; 27. Guide groove; 28. Extrusion plate; 29. ​​Rectangular groove; 3. Cleaning assembly; 31. Square groove; 311. Second compression spring; 32. Scraper; 33. Auxiliary rod; 4. Driving assembly; 41. Sleeve; 42. Rotating handwheel. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 9 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0027] Reference Figure 1 , Figure 2 and Figure 6 The present embodiment provides a valve for a conveying pipeline, comprising a valve body 1, a cleaning component 2, a cleaning component 3 and a driving component 4. A sealing ring 11 is fixedly installed on the flow-through cavity inside the valve body 1. The sealing ring 11 is set in an annular shape and the inner side surface is set downwardly inclined from the outside to the inside. A valve stem 12 is set through the top of the valve body 1. A sealing block 13 located directly above the sealing ring 11 is set on the valve stem 12. The sealing block 13 is set on the valve stem 12 through a shaft sleeve. The shaft and the valve stem 12 are set coaxially. The outer side surface of the sealing block 13 is consistent with the inner side surface of the sealing ring 11, and both are set as inclined surfaces. A cleaning component 2 for flushing the sealing ring 11 is set on the sealing block 13. A cleaning component 3 is set inside the valve body 1. The cleaning component 3 is used to scrape off solid particles deposited on the inner wall of the valve body 1. The valve body 1 is provided with a driving component 4 for driving the valve stem 12 to move up and down.

[0028] Reference Figure 3 , Figure 6 , Figure 7 and Figure 8 The cleaning assembly 2 includes a water tank 21, a water inlet 22 and an electric valve 23. The water tank 21 is rotatably connected to the top of the sealing block 13. The water tank 21 is configured to be truncated. The water tank 21, the sealing block 13 and the valve stem 12 are coaxially configured. The water inlet 22 is configured to be multiple and all are opened in a circular array on the sealing block 13. The water inlet 22 is equipped with an electric valve 23. The electric valve 23 is configured to be a one-way valve. The electric valve 23 is used to allow the liquid inside the valve body 1 to enter the water tank 21 through the water inlet 22.

[0029] Reference Figure 6 , Figure 8 and Fig. 9 The cleaning assembly 2 also includes a telescopic plate 24 , a first compression spring 241 , a first water outlet 25 , a second water outlet 26 and a guide groove 27 . A rectangular groove 29 is horizontally provided on the sealing block 13, and the rectangular groove 29 runs through the inclined surface of the sealing block 13. The rectangular groove 29 is arranged in plurality and distributed in a circular array. A first compression spring 241 is fixedly installed in the rectangular groove 29, and a telescopic plate 24 is connected to the first compression spring 241. When the telescopic plate 24 is completely inside the rectangular groove 29, the protruding end of the telescopic plate 24 is flush with the inclined surface of the sealing block 13. A second water outlet 26 is provided on the telescopic plate 24, and a plurality of first water outlet holes 25 are provided in a circular array on the sealing block 13. During the telescopic process, the telescopic plate 24 can ensure that the second water outlet holes 26 correspond to or stagger a single first water outlet hole 25. A guide groove 27 is provided on the sealing block 13. When the water in the water storage tank 21 flows out, the water flows along the guide groove 27 to flush the surface of the sealing ring 11.

[0030] Reference Figure 6 , Figure 8 and Fig. 9 The cleaning assembly 2 further includes a squeeze plate 28 and a filter screen. The squeeze plate 28 is fixedly mounted on the end of the valve stem 12 and is located in the water storage tank 21. The squeeze plate 28 is used to squeeze the liquid in the water storage tank 21 so that the liquid has a certain impact force when it flows out. The water inlet 22 and the second water outlet 26 are both provided with a filter screen, which can prevent particles in the solid-liquid mixture from entering the water storage tank 21.

[0031] When in use, the valve stem 12 moves upward, driving the sealing block 13 and the water tank 21 to move upward synchronously to open the valve, and the solid-liquid mixture flows through the interior of the valve body 1 until the water tank 21 contacts the top wall inside the valve body 1. The valve stem 12 drives the extrusion block to continue to move upward until the extrusion block contacts the top wall inside the water tank 21, and the electric valve 23 draws the liquid in the solid-liquid mixture into the interior of the water tank 21. When closing the valve, the valve stem 12 drives the sealing block 13 and the water tank 21 to move downward. When the sealing block 13 is about to contact the sealing ring 11, the telescopic plate 24 first contacts the sealing ring 11. As the sealing block 13 slowly moves downward, the telescopic plate 24 gradually moves downward under the action of pressure. When the second water outlet hole 26 and the first water outlet hole 25 are gradually overlapped, the sealing pressure block 13 is subjected to the resistance of the first compression spring, and the sealing pressure block 13 will reduce the speed of downward movement. At the same time, the valve stem 12 drives the extrusion plate 28 to move downward, and the water in the water storage tank 21 flows out from the first water outlet hole 25, the second water outlet hole 26 and the guide groove 27 in sequence. Under the extrusion action of the extrusion plate 28, a water flow is formed to impact the sealing ring 11, and the solid particles deposited on the surface of the sealing ring 11 are washed away, until the telescopic plate 24 completes entering the rectangular groove 29, and the sealing pressure block 13 is completely pressed on the sealing ring 11 to complete the closing of the valve.

[0032] Reference Figure 4 , Figure 5 and Figure 6 The cleaning assembly 3 includes a second compression spring 311, a scraper 32 and an auxiliary rod 33. A square groove 31 is provided on the circular side wall of the water storage tank 21. The square groove 31 is arranged in a plurality and distributed in a circular array. The square groove 31 penetrates the outer wall of the water storage tank 21. A second compression spring 311 is installed in the square groove 31. The scraper 32 is connected to the second compression spring 311. When the water storage tank 21 moves up and down, the scraper 32 always abuts against the inner wall of the valve body 1 under the elastic force of the second compression spring 311. The auxiliary rod 33 is fixedly installed on the valve stem 12. The length of the auxiliary rod 33 is greater than the vertical length of the height of the water storage tank 21. One end face of the auxiliary rod 33 is fixedly connected to the top wall of the extrusion plate 28 and the auxiliary rod 33 penetrates the top of the water storage tank 21. When the valve stem 12 rotates, the auxiliary rod 33 can drive the water storage tank 21 to rotate synchronously.

[0033] When in use, the valve stem 12 moves up and down, driving the water tank 21 to move up and down synchronously. Under the elastic force of the second compression spring 311, the scraper 32 always abuts against the inner wall of the valve body 1. The scraper 32 reciprocates and extends in the square groove 31. When the valve stem 12 rotates, the scraper 32 scrapes off the solid particles on the inner wall of the valve body 1 to prevent the solid particles from being deposited on the inner wall of the valve body 1.

[0034] Reference Figure 2The driving assembly 4 includes a sleeve 41 and a rotating hand wheel 42. The top of the valve body 1 is provided with a sleeve 41 through a support rod, and threads are provided on the inner wall of the sleeve 41 and the outer wall of the valve stem 12, and the two threads are meshed, and a rotating hand wheel 42 is installed on the valve stem 12.

[0035] When in use, the rotary hand wheel 42 is turned, and the surface of the valve stem 12 and the threads on the inner wall of the sleeve 41 are meshed, so that the valve stem 12 can be raised and lowered while rotating around its own axis.

[0036] The implementation principle of a valve for a conveying pipeline in the embodiment of the present application is: When using the device, first turn the rotating hand wheel 42 to move the sealing block 13 upward, the sealing block 13 and the sealing ring 11 are separated to open the valve, and the solid-liquid mixture enters from the inlet of the valve and flows out from the outlet. When the water storage tank 21 contacts the top wall inside the valve body 1, the valve stem 12 drives the extrusion plate 28 to continue to move upward, and the electric valve 23 draws the liquid flowing through the valve body 1 into the water storage cavity inside the water storage tank 21.

[0037] When closing the valve, reverse the rotation of the hand wheel 42, and the valve stem 12 rotates downward under the action of the sleeve 41, driving the water tank 21 and the sealing block 13 to move downward synchronously. At the same time, under the connection of the auxiliary rod 33, the water tank 21 rotates around its own axis during the downward movement, and the scraper 32 abuts against the inner wall of the tank body under the action of the second compression spring 311. The water tank 21 drives the scraper 32 to rotate, and the scraper 32 scrapes off the particles deposited on the inner wall of the valve body 1 to prevent the particles from being deposited on the inner wall of the valve body 1.

[0038] When the sealing block 13 is about to contact the sealing ring 11, the telescopic plate 24 first contacts the surface of the sealing ring 11. The telescopic plate 24 is subjected to external squeezing force and retracts into the rectangular groove 29, so that the second water outlet 26 on the telescopic plate 24 gradually overlaps with the first water outlet 25. Under the resistance of the first compression spring 241, the downward movement speed of the sealing block 13 slows down, and the squeezing plate 28 moves downward under the drive of the valve stem 12, squeezing the water inside the water storage tank 21. The water flows out from the first water outlet 25, the second water outlet 26 and the guide groove 27 in turn, and the water impacts the sealing ring 11, and impacts the solid particles deposited on the sealing ring 11, causing the particles to fall, until the sealing block 13 and the sealing ring 11 are completely in contact, and the valve is closed.

[0039] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A valve for a conveying pipeline, comprising a valve body (1), a sealing ring (11) and a valve stem (12), wherein a sealing block (13) is provided on the valve stem (12) via a shaft sleeve, and a driving assembly (4) for lifting and lowering the valve stem (12) is provided on the valve body (1), characterized in that: The sealing pressing block (13) is rotatably connected to a water storage tank (21), a water inlet hole (22) is provided on the sealing pressing block (13), and an electric valve (23) for introducing water into the water storage tank (21) is installed on the water inlet hole (22); The sealing block (13) is provided with a rectangular groove (29), a telescopic plate (24) is connected to the rectangular groove (29) via a first compression spring (241), a first water outlet hole (25) is provided on the sealing block (13), a second water outlet hole (26) is provided on the telescopic plate (24), a guide groove (27) is provided on the sealing block (13), the guide groove (27) is used to guide water flow to the sealing ring (11), and a pressing plate (28) located inside the water storage tank (21) is provided on the valve stem (12); The water storage tank (21) is provided with a cleaning component (3), which is used to scrape off solid particles deposited on the inner wall of the valve body (1).

2. A valve for a conveying pipeline according to claim 1, characterized in that: The cleaning assembly (3) comprises a square groove (31) formed on the water storage tank (21), and a scraper (32) is connected to the square groove (31) via a second compression spring (311).

3. A valve for a conveying pipeline according to claim 2, characterized in that: The cleaning assembly (3) further comprises an auxiliary rod (33) fixedly mounted on the valve stem (12), wherein one end surface of the auxiliary rod (33) is fixedly connected to the extrusion plate (28).

4. A valve for a conveying pipeline according to claim 1, characterized in that: The water inlet (22) and the second water outlet (26) are both provided with filter screens, and the filter screens are used to prevent solid particles from entering the water storage tank (21).

5. A valve for a conveying pipeline according to claim 1, characterized in that: The drive assembly (4) comprises a sleeve (41) fixedly mounted on the valve body (1); the sleeve (41) is coaxially arranged with the valve stem (12); the outer surface of the valve stem (12) and the inner wall of the sleeve (41) are provided with meshing threads; and a rotating hand wheel (42) is mounted on the valve stem (12).

6. A valve for a conveying pipeline according to claim 4, characterized in that: The water inlet hole (22), the first water outlet hole (25) and the telescopic plate (24) are all provided in plurality.

7. A valve for a conveying pipeline according to claim 1, characterized in that: The second water outlet holes (26) on the telescopic plate (24) can overlap or be misaligned with the first water outlet holes (25) during the reciprocating telescopic process.

8. A valve for a conveying pipeline according to claim 1, characterized in that: The electric valve (23) is configured as a one-way valve.

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