Single-seat sleeve adjusting valve

Abstract

The invention belongs to the technical field of regulating valves, and particularly relates to a single-seat sleeve regulating valve which comprises a valve body, a liquid inlet is formed in one side of the valve body, a liquid outlet is formed in the other side of the valve body, a lifting cylinder is fixed to the top end of the valve body, a lifting structure is mounted at the top end of the lifting cylinder, and a mounting opening is formed in the valve body. A water guide hole is formed in the bottom end of the mounting opening, a pull rod is arranged in the lifting cylinder, the top end of the pull rod is connected with the lifting structure, a valve element is mounted at the bottom end of the pull rod, a sealing sleeve is arranged in the mounting opening, a sealing ring is arranged at the bottom end of the sealing sleeve, a placing shell is fixed to one side of the lifting cylinder, and a clamping arm is arranged on one side in the placing shell; the sealing sleeve and the sealing ring can be conveniently lifted from the interior of the valve body to the interior of the lifting cylinder through fixation between the telescopic column and the positioning block, then the old sealing ring can be detached through the clamping arm, a new sealing ring is replaced below the sealing sleeve, the sealing ring can be replaced under the condition that the valve body is not detached, and maintenance is more convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of control valves, and specifically relates to a single-seat sleeve control valve. Background Art

[0002] A single-seat sleeve control valve is a device used to precisely regulate the flow rate, pressure, temperature, or liquid level of fluids in pipelines. During use, the single-seat sleeve control valve can control the liquid outlet gap of the valve body through the internal valve core, and the flow rate of the control valve can be controlled by adjusting the size of the gap.

[0003] A Chinese patent with the publication number CN207687364U discloses a micro-flow single-seat control valve. The valve seat is placed on the valve seat platform inside the valve body through an annular sealing ring. The lining is installed inside the valve seat ring guard, and the valve seat ring guard is installed on the valve seat platform inside the valve body. The valve core connected to the valve rod is installed inside the valve seat through the valve seat ring guard. The valve seat and the valve core adopt two-way seals, improving the sealing effect.

[0004] During the use of the above technical solution, the valve seat needs to be installed inside the control valve, and the connection between the valve seat and the control valve is sealed through a sealing ring. However, after long-term use, the sealing ring will wear and corrode, and the sealing performance of the sealing ring will deteriorate, affecting the use of the control valve. The staff needs to remove the whole unit to replace the sealing ring, and the removal process takes a lot of time, making the maintenance of the control valve rather troublesome.

[0005] Therefore, the present invention provides a single-seat sleeve control valve. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A single-seat sleeve regulating valve described in the present invention includes a valve body. One side of the valve body is provided with a liquid inlet, and the other side of the valve body is provided with a liquid outlet. The top of the valve body is fixed with a lifting cylinder, and the top of the lifting cylinder is installed with a lifting structure. An installation opening is provided inside the valve body, and a water guide hole is provided at the bottom of the installation opening. A pull rod is arranged inside the lifting cylinder. The top of the pull rod is connected to the lifting structure, and the bottom of the pull rod is installed with a valve core. A sealing sleeve is arranged inside the installation opening. A sealing ring is arranged at the bottom of the sealing sleeve. The bottom of the sealing sleeve is fixed with a plurality of fixing columns, and a fixing component is arranged inside the fixing columns. A positioning block is arranged above each fixing column. The positioning block is fixedly connected to the sealing sleeve. A telescopic hole is provided inside the positioning block. A fixing groove is provided at the bottom of the inner part of the installation opening. The fixing column can be fixed to the fixing groove through the fixing component. A fixing hole is provided inside the sealing ring, and the fixing hole can be sleeved outside the fixing column. A telescopic column is slidably connected inside the valve core. A placement shell is fixed on one side of the lifting cylinder, and a clamping arm is arranged on one side inside the placement shell.

[0008] Preferably, the fixing component includes clamping blocks slidably connected to both sides inside the fixing column. A first spring is fixed to the side of the clamping block close to the fixing column, and the other end of the first spring is fixedly connected to the fixing column. Card slots are provided on both sides inside the fixing groove, and the clamping block can be engaged with the card slots of the fixing groove.

[0009] Preferably, a lifting frame is slidably connected inside the positioning block. A pull rope is fixed to the bottom of the lifting frame, and both sides of the bottom of the pull rope are fixedly connected to the clamping block.

[0010] Preferably, second springs are fixed to both sides of the telescopic column, and the other ends of the second springs are fixedly connected to the valve core. A rotating block is rotatably connected inside the valve core, and a rotating column is fixed to the top of the rotating block.

[0011] Preferably, the lifting structure includes a lifting component fixed to the top of the lifting cylinder. A lifting rod is arranged at the bottom of the lifting component. A second connecting block is fixed to the bottom of the lifting rod. A third motor is installed inside the second connecting block. The end of the rotating shaft of the third motor is connected to the lifting rod, and the output gear is meshed with the steering gear.

[0012] Preferably, a water blocking block is arranged inside the lifting cylinder. The outer diameter of the water blocking block matches the inner diameter of the lifting cylinder, and the inner diameter of the water blocking block matches the outer diameter of the pull rod. A retaining ring is arranged below the water blocking block, and the retaining ring is fixed to the bottom inside the lifting cylinder.

[0013] Preferably, a second motor is installed on the side of the placement shell away from the clamping arm. A second threaded rod is fixed to the end of the rotating shaft of the second motor. A second guide sleeve is arranged between the clamping arm and the second motor. The second guide sleeve is fixedly connected to the placement shell. A telescopic arm is slidably connected inside the second guide sleeve. The telescopic arm is threadedly connected to the second threaded rod. A first connection block is fixed to the side of the clamping arm close to the telescopic arm. The first connection block is rotatably connected to the telescopic arm.

[0014] Preferably, limiting columns are fixed to both sides of the first connection block. A limiting plate is arranged below the limiting columns. The limiting plate is fixedly connected to the telescopic arm. Torsion springs are fixed to both sides of the telescopic arm close to the first connection block. The inner sides of the torsion springs are fixedly connected to the rotating shaft of the first connection block. A plurality of teeth are arranged on the side of the first connection block close to the telescopic arm. A toothed plate is fixed to the side of the second guide sleeve close to the first connection block. The first connection block can be meshed with the toothed plate. An opening is formed in the upper part of the placement shell.

[0015] Preferably, a plurality of ejector posts are fixed to the bottom end of the water blocking block. A plurality of ejector holes are formed in the sealing sleeve. The ejector holes are arranged between two adjacent fixed columns. The ejector posts can be inserted into the ejector holes.

[0016] Preferably, a first guide sleeve is fixed to the bottom end inside the valve body. A first motor is installed below the first guide sleeve. A first threaded rod is fixed to the end of the rotating shaft of the first motor. A temporary sealing head is arranged above the first guide sleeve. The bottom end of the temporary sealing head is inserted into the first guide sleeve. The first threaded rod is threadedly connected to the temporary sealing head.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. For the single-seat sleeve control valve of the present invention, the fixation between the telescopic column and the positioning block facilitates lifting the sealing sleeve and the sealing ring from the inside of the valve body into the lifting cylinder. Then, the old sealing ring can be removed by the clamping arm, and a new sealing ring can be replaced below the sealing sleeve. The sealing ring can be replaced without disassembling the valve body, which is more convenient for maintenance.

[0019] 2. For the single-seat sleeve control valve of the present invention, the bottom end of the water guide hole can be blocked by the temporary sealing head. When maintenance of the inside of the valve body is required, the temporary sealing head can be driven to rise by rotating the first motor, so that it is not necessary to close the main valve during maintenance, and the maintenance is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 is Figure 2 The partial enlarged view at position A in

[0024] Figure 4 is the schematic structural view of the sealing sleeve in the present invention;

[0025] Figure 5 is the schematic internal structural view of the valve core in the present invention;

[0026] Figure 6 is the schematic internal structural view of the fixing column in the present invention;

[0027] Figure 7 is the schematic internal structural view of the water blocking block in the present invention;

[0028] Figure 8 is the schematic structural view of the placement shell in the present invention;

[0029] Figure 9 is the schematic structural view of the clamping arm in the present invention;

[0030] Figure 10 is the schematic structural view of the temporary sealing head in the present invention.

[0031] In the figure: 1. Valve body; 11. Liquid inlet; 12. Liquid outlet; 13. Temporary sealing head; 131. First threaded rod; 132. First guide sleeve; 133. First motor; 14. Installation port; 141. Fixed groove; 15. Sealing sleeve; 151. Ejector hole; 152. Fixing column; 153. Block; 154. First spring; 155. Pulling rope; 156. Positioning block; 157. Lifting frame; 158. Telescopic hole; 16. Sealing ring; 161. Fixed hole; 17. Water guide hole; 2. Lifting cylinder; 21. Placement shell; 211. Second motor; 212. Second threaded rod; 213. Telescopic arm; 214. Second guide sleeve; 215. Limit plate; 216. Rack; 22. Pull rod; 23. Valve core; 231. Rotating block; 232. Telescopic column; 233. Second spring; 234. Rotating column; 24. Retaining ring; 25. Clamping arm; 251. First connecting block; 252. Limit post; 26. Water blocking block; 261. Jacking post; 3. Lifting assembly; 31. Lifting rod; 32. Second connecting block; 321. Third motor. Detailed implementation manners

[0032] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0033] Such as Figures 1 to 5As shown in the figure, a single-seat sleeve control valve according to an embodiment of the present invention includes a valve body 1. A liquid inlet 11 is provided on one side of the valve body 1, and a liquid outlet 12 is provided on the other side of the valve body 1. A lifting cylinder 2 is fixed to the top of the valve body 1, and a lifting structure is installed at the top of the lifting cylinder 2. An installation opening 14 is formed inside the valve body 1, and a water guide hole 17 is formed at the bottom end of the installation opening 14. A pull rod 22 is arranged inside the lifting cylinder 2. The top end of the pull rod 22 is connected to the lifting structure, and a valve core 23 is installed at the bottom end of the pull rod 22. A sealing sleeve 15 is arranged inside the installation opening 14. A sealing ring 16 is arranged at the bottom end of the sealing sleeve 15. A plurality of fixing columns 152 are fixed to the bottom end of the sealing sleeve 15. A fixing component is arranged inside the fixing column 152. A positioning block 156 is arranged above each fixing column 152. The positioning block 156 is fixedly connected to the sealing sleeve 15. A telescopic hole 158 is formed inside the positioning block 156. A fixing groove 141 is formed at the bottom end inside the installation opening 14. The fixing column 152 can be fixed to the fixing groove 141 through the fixing component. A fixing hole 161 is formed inside the sealing ring 16. The fixing hole 161 can be sleeved outside the fixing column 152. A telescopic column 232 is slidably connected inside the valve core 23. A placement shell 21 is fixed to one side of the lifting cylinder 2. A clamping arm 25 is arranged on one side inside the placement shell 21;

[0034] A control valve is used at the connection of a pipeline for conveying fluid. The control valve can be used to adjust the flow rate of the pipeline or to open and close the pipeline. When in use, the liquid inlet 11 is connected to the input pipeline, and the liquid outlet 12 is connected to the output pipeline. When in use, fluid enters from the liquid inlet 11 end, and the fluid enters the lower area inside the valve body 1. At this time, the fluid needs to pass through the water guide hole 17. The sealing sleeve 15 and the valve core 23 inside the water guide hole 17 will block the water guide hole 17. When it is necessary to allow the fluid to flow through, the lifting structure pulls the pull rod 22 upward. At this time, the pull rod 22 drives the valve core 23 to move upward. At this time, a gap appears between the valve core 23 and the sealing sleeve 15. At this time, the fluid will flow into the upper area inside the valve body 1 from the gap, and then flow out through the liquid outlet 12 to the output pipeline. When the valve core 23 continues to rise, the gap between the valve core 23 and the sealing sleeve 15 becomes larger. At this time, the flow rate that can pass through the gap will increase, so as to realize the adjustment of the flow rate inside the valve body 1;

[0035] During use, the sealing sleeve 15 is installed inside the installation port 14 and the water guide hole 17. At this time, in order to ensure the sealing performance between the sealing sleeve 15 and the water guide hole 17, a sealing ring 16 is installed between the sealing sleeve 15 and the water guide hole 17. The sealing ring 16 can seal between the sealing sleeve 15 and the installation port 14, ensuring that there is no gap in the connection between the sealing sleeve 15 and the water guide hole 17. During long-term use, the sealing ring 16 will be worn and corroded. At this time, the sealing performance of the sealing ring 16 will deteriorate, resulting in an error between the flow rate adjusted by the valve core 23 and the actual output flow rate. Therefore, at this time, the sealing ring 16 needs to be replaced. When replacement is required, the telescopic column 232 inside the valve core 23 inserts into the inside of the telescopic hole 158. At this time, the fixing component inside the fixing column 152 can be disengaged from the fixing groove 141. At this time, the telescopic column 232 is connected to the positioning block 156. Subsequently, the lifting structure is started to pull the valve core 23 upward through the pull rod 22. When the valve core 23 rises, it can drive the sealing sleeve 15 to rise. When the sealing sleeve 15 rises, it will simultaneously drive the sealing ring 16 to rise. Subsequently, the valve core 23 continues to rise to a position inside the lifting cylinder 2 on the side of the placement shell 21. At this time, the clamping arm 25 inside the placement shell 21 can clamp the sealing ring 16 to separate it from the sealing sleeve 15. Then, the staff can replace the new sealing ring 16 below the sealing sleeve 15. After replacement, the lifting structure pushes the valve core 23 downward. At this time, the valve core 23 drives the sealing sleeve 15 and the sealing ring 16 to reset to the inside of the installation port 14 and the water guide hole 17. After the fixing column 152 is inserted into the fixing groove 141, the telescopic column 232 retracts into the inside of the valve core 23. At this time, the fixing component inside the fixing column 152 can be fixed to the fixing groove 141 again, realizing the replacement of the sealing ring 16 without completely removing the components inside the valve body 1, reducing the maintenance time of the regulating valve.

[0036] As Figures 1 to 6 shown, the fixing component includes clamping blocks 153 slidably connected to both sides inside the fixing column 152. A first spring 154 is fixed to one side of the clamping block 153 close to the fixing column 152, and the other end of the first spring 154 is fixedly connected to the fixing column 152. Card slots are provided on both sides inside the fixing groove 141, and the clamping block 153 can be engaged with the card slots of the fixing groove 141.

[0037] During use, it is necessary to fix the fixing column 152 inside the fixing groove 141. During the fixing process, the elastic force of the first spring 154 pushes the clamping block 153 into the card slots inside the fixing groove 141. At this time, the fixing column 152 can be fixed inside the fixing groove 141.

[0038] As Figures 1 to 6 shown, a lifting frame 157 is slidably connected inside the positioning block 156. A pull rope 155 is fixed to the bottom end of the lifting frame 157, and both sides of the bottom end of the pull rope 155 are fixedly connected to the clamping block 153.

[0039] When it is necessary to release the fixation between the fixed column 152 and the fixed groove 141, the telescopic column 232 will be inserted into the interior of the telescopic hole 158. At this time, the end slope of the telescopic column 232 will push the plate body at the top of the lifting frame 157 upward. At this time, the entire lifting frame 157 will move upward. The lifting frame 157 pulls the pull rope 155 upward. At this time, the pull rope 155 can pull the clamping block 153 to retract into the interior of the fixed column 152. At this time, the fixation between the fixed column 152 and the fixed groove 141 is released, facilitating the removal of the sealing sleeve 15 from the mounting port 14.

[0040] As Figures 1 to 5 shown, second springs 233 are fixed on both sides of the telescopic column 232. The other ends of the second springs 233 are fixedly connected to the valve core 23. A rotating block 231 is rotatably connected inside the valve core 23. A rotating column 234 is fixed to the top of the rotating block 231;

[0041] When it is necessary to fix the valve core 23 and the sealing sleeve 15, clockwise rotation of the rotating column 234 can drive the rotation of the rotating block 231. When the rotating block 231 rotates, the outer slope thereof will push the end portion inside the telescopic column 232. When the end of the telescopic column 232 slides to the outermost side of the slope of the rotating block 231, the telescopic column 232 extends out of the interior of the valve core 23 and is inserted into the interior of the telescopic hole 158. The telescopic column 232 presses the second spring 233. At this time, the valve core 23 and the sealing sleeve 15 can be fixed. When it is necessary to separate the valve core 23 and the sealing sleeve 15, continue to rotate the rotating block 231 clockwise. The telescopic column 232 separates from the outermost side of the rotating block 231. At this time, the elastic force of the second spring 233 pushes the telescopic column 232 to restore it to the initial position of the slope of the rotating block 231, enabling the telescopic column 232 to separate from the telescopic hole 158, facilitating the control of the fixation and separation of the valve core 23 and the sealing sleeve 15.

[0042] As Figures 1 to 7 shown, the lifting structure includes a lifting component 3 fixed to the top of the lifting cylinder 2. A lifting rod 31 is provided at the bottom end of the lifting component 3. A second connecting block 32 is fixed to the bottom end of the lifting rod 31. A third motor 321 is installed inside the second connecting block 32. The end of the rotating shaft of the third motor 321 is connected to the lifting rod 31, and the output gear is meshed with the steering gear 235;

[0043] When it is necessary to lift the valve core 23 upward, the lifting component 3 can drive the lifting rod 31 to rise. The lifting rod 31 pulls the pull rod 22 to move through the second connecting block 32. When the rotating column 234 needs to rotate, the third motor 321 is started. The third motor 321 drives the output gear to rotate, enabling the steering gear 235 to rotate. The steering gear 235 drives the rotating column 234 to rotate, realizing the automatic control of the fixation and separation between the valve core 23 and the sealing sleeve 15.

[0044] As Figures 1 to 7As shown, a water blocking block 26 is arranged inside the lifting cylinder 2. The outer diameter of the water blocking block 26 matches the inner diameter of the lifting cylinder 2, and the inner diameter of the water blocking block 26 matches the outer diameter of the pull rod 22. A retaining ring 24 is arranged below the water blocking block 26, and the retaining ring 24 is fixed at the bottom end inside the lifting cylinder 2;

[0045] During use, there will be a gap between the lifting cylinder 2 and the pull rod 22, and the fluid inside the valve body 1 will flow out to the outside through the gap. To solve this problem, a water blocking block 26 is arranged inside the lifting cylinder 2. The water blocking block 26 can isolate the liquid at the bottom end inside the lifting cylinder 2. In daily use, the second connecting block 32 will press the water blocking block 26 downward. As the valve core 23 is adjusted, the second connecting block 32 will move up and down. At this time, under the push of the fluid pressure, the water blocking block 26 will also move, but the second connecting block 32 can always limit the water blocking block 26 below it. When the sealing ring 16 needs to be replaced, the valve core 23 rises. At this time, the valve core 23 will drive the water blocking block 26 to move upward. Therefore, the water blocking block 26 will not affect the disassembly and assembly process of the sealing ring 16. The retaining ring 24 can limit the bottom of the lifting cylinder 2 to prevent the water blocking block 26 from falling into the inside of the valve body 1.

[0046] As Figures 1 to 9 shown, a second motor 211 is installed on one side of the placement shell 21 away from the clamping arm 25. A second threaded rod 212 is fixed to the end of the rotating shaft of the second motor 211. A second guide sleeve 214 is arranged between the clamping arm 25 and the second motor 211. The second guide sleeve 214 is fixedly connected to the placement shell 21. A telescopic arm 213 is slidably connected inside the second guide sleeve 214. The telescopic arm 213 is threadedly connected to the second threaded rod 212. A first connecting block 251 is fixed to one side of the clamping arm 25 close to the telescopic arm 213. The first connecting block 251 is rotatably connected to the telescopic arm 213;

[0047] When disassembling and assembling the sealing ring 16, in the initial state, the clamping arm 25 is placed inside the placement shell 21. Then, the lifting structure drives the valve core 23 to move into the interior of the lifting cylinder 2. When the valve core 23 drives the sealing ring 16 to move to the same horizontal line as the middle of the clamping arm 25, the lifting structure pauses the lifting. Then, the second motor 211 drives the second threaded rod 212 to rotate. At this time, the second threaded rod 212 can drive the telescopic arm 213 to extend from the interior of the second guide sleeve 214. The telescopic arm 213 pushes the clamping arm 25 to extend from the interior of the placement shell 21. The clamping arm 25 clamps at the edge of the sealing ring 16. Then, the lifting structure is started to continue rising. At this time, the clamping arm 25 can pull the sealing ring 16 down from below the sealing sleeve 15. Subsequently, the second motor 211 rotates in the reverse direction, which can cause the telescopic arm 213 to drive the clamping arm 25 to retract into the interior of the placement shell 21. Then, the sealing ring 16 inside the clamping arm 25 is replaced with a new one. Then, the clamping arm 25 is extended again to the lower side of the sealing sleeve 15. Subsequently, the valve core 23 pushes the sealing sleeve 15 downward. After the fixing column 152 is inserted into the fixing hole 161, the lifting structure is paused. The second motor 211 is started to drive the clamping arm 25 to retract into the interior of the placement shell 21 again. Then, the valve core 23 pushes the sealing sleeve 15 and the sealing ring 16 downward back into the installation port 14, which can facilitate the replacement of the sealing ring 16.

[0048] As Figures 1 to 9 shown, both sides of the first connection block 251 are fixed with limit posts 252. Below the limit posts 252, there is a limit plate 215. The limit plate 215 is fixedly connected to the telescopic arm 213. On both sides of the telescopic arm 213 close to the first connection block 251, torsion springs are fixed. The inner sides of the torsion springs are fixedly connected to the rotating shaft of the first connection block 251. On one side of the first connection block 251 close to the telescopic arm 213, there are multiple teeth. On one side of the second guide sleeve 214 close to the first connection block 251, a toothed plate 216 is fixed. The first connection block 251 can be meshed and connected with the toothed plate 216. An opening is provided above the placement shell 21;

[0049] After the clamping arm 25 pulls the sealing ring 16 back into the interior of the placement shell 21, in order to facilitate the replacement, the clamping arm 25 needs to be flipped. When the first connection block 251 retracts into the interior of the placement shell 21, the first connection block 251 will contact the toothed plate 216. At this time, the toothed plate 216 will drive the first connection block 251 to rotate upward by 90°. The first connection block 251 drives the clamping arm 25 to rotate upward to the opening of the placement shell 21. At this time, it is more convenient to replace the sealing ring 16. After replacement, pushing the telescopic arm 213 in the reverse direction can cause the toothed plate 216 to drive the first connection block 251 to rotate in the reverse direction by 90°. When rotating, the limit posts 252 and the limit plate 215 can limit the rotation angle of the clamping arm 25 to prevent it from rotating excessively. At the same time, the torsion springs on both sides of the telescopic arm 213 will provide a pulling force to the first connection block 251, making it easier when the clamping arm 25 pulls the sealing ring 16 down.

[0050] As Figures 1 to 7As shown, a plurality of ejector posts 261 are fixed to the bottom end of the water retaining block 26. A plurality of ejector holes 151 are formed inside the sealing sleeve 15. The ejector holes 151 are arranged between two adjacent fixed posts 152. The ejector posts 261 can be inserted into the ejector holes 151.

[0051] In the normal use state, the sealing ring 16 will be in close contact with the sealing sleeve 15. Therefore, during the removal process, the fact that the sealing ring 16 is in close contact with the sealing sleeve 15 will make it inconvenient to disassemble. When the valve core 23 is in close contact with the water retaining block 26, the ejector posts 261 will push the sealing ring 16 through the ejector holes 151, which can create a gap between the sealing ring 16 and the sealing sleeve 15, making it more convenient for the clamping arm 25 to clamp the sealing ring 16.

[0052] As Figures 1 to 10 As shown, a first guide sleeve 132 is fixed to the bottom end inside the valve body 1. A first motor 133 is installed below the first guide sleeve 132. The end of the rotating shaft of the first motor 133 is fixed with a first threaded rod 131. A temporary sealing head 13 is arranged above the first guide sleeve 132. The bottom end of the temporary sealing head 13 is inserted into the first guide sleeve 132. The first threaded rod 131 is in threaded connection with the temporary sealing head 13.

[0053] During maintenance, in order to set the temporary sealing head 13 more conveniently, start the first motor 133 to drive the first threaded rod 131 to rotate during maintenance. At this time, the first threaded rod 131 can drive the bottom end of the temporary sealing head 13 to extend out of the first guide sleeve 132. At this time, the upward movement of the temporary sealing head 13 can block the bottom end of the water guiding hole 17. In this way, the regulating valve can be maintained without closing the main valve.

[0054] 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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-seat sleeve regulating valve, characterized in that: The closure of the valve body is provided with a valve inlet on one side of the valve body, and a liquid outlet on the other side of the valve body. A lifting cylinder is fixed on the top of the valve body, and a lifting structure is installed on the top of the lifting cylinder. An installation port is opened inside the valve body, and a water guide hole is opened at the bottom of the installation port. A pull rod is arranged inside the lifting cylinder, and the top of the pull rod is connected with the lifting structure, and a valve core is installed at the bottom of the pull rod. A sealing sleeve is arranged inside the installation port, and a sealing ring is arranged at the bottom end of the sealing sleeve. A plurality of fixing columns are fixed at the bottom end of the sealing sleeve, and a fixing component is arranged inside the fixing column. A positioning block is arranged above each fixing column, and the positioning block is fixedly connected with the sealing sleeve. A telescopic hole is opened inside the positioning block, and a fixing groove is opened at the bottom end of the installation port. The fixing column can be fixed to the fixing groove through the fixing component, and a fixing hole is opened inside the sealing ring, and the fixing hole can be sleeved on the outside of the fixing column. The inside of the valve core is slidably connected with the telescopic column, and a placement shell is fixed on one side of the lifting cylinder, and a clamping arm is arranged on one side inside the placement shell.

2. A single-seat sleeve regulating valve according to claim 1, characterized in that: The fixing component includes a card block slidably connected to both sides of the fixing column, a first spring is fixed to one side of the card block close to the fixing column, the other end of the first spring is fixedly connected to the fixing column, and card slots are provided on both sides of the fixing groove, and the card block can be engaged with the card slots of the fixing groove.

3. A single-seat sleeve regulating valve according to claim 2, characterized in that: The interior of the positioning block is slidably connected with a lifting frame, a pull rope is fixed at the bottom end of the lifting frame, and both sides of the bottom end of the pull rope are fixedly connected with the clamping block.

4. A single-seat sleeve regulating valve according to claim 1, characterized in that: Second springs are fixed on both sides of the telescopic column, the other end of the second spring is fixedly connected to the valve core, the interior of the valve core is rotatably connected to a rotating block, and a rotating column is fixed to the top of the rotating block.

5. A single-seat sleeve regulating valve according to claim 4, characterized in that: The lifting structure includes a lifting assembly fixed on the top of the lifting cylinder, a lifting rod is arranged at the bottom end of the lifting assembly, a second connecting block is fixed at the bottom end of the lifting rod, a third motor is installed inside the second connecting block, and the end of the rotating shaft of the third motor is meshed and connected with the lifting rod, and the output gear is meshed with the steering gear.

6. A single-seat sleeve regulating valve according to claim 5, characterized in that: A water retaining block is arranged inside the lifting cylinder, the outer diameter of the water retaining block matches the inner diameter of the lifting cylinder, the inner diameter of the water retaining block matches the outer diameter of the pull rod, a retaining ring is arranged below the water retaining block, and the retaining ring is fixed to the bottom end inside the lifting cylinder.

7. The single-seat sleeve regulating valve according to claim 1, characterized in that: A second motor is installed on the side of the placement shell away from the clamping arm, a second threaded rod is fixed to the end of the rotating shaft of the second motor, a second guide sleeve is arranged between the clamping arm and the second motor, the second guide sleeve is fixedly connected to the placement shell, a telescopic arm is slidably connected inside the second guide sleeve, the telescopic arm is threadedly connected to the second threaded rod, a first connecting block is fixed to the side of the clamping arm close to the telescopic arm, and the first connecting block is rotatably connected to the telescopic arm.

8. The single-seat sleeve regulating valve according to claim 7, characterized in that: Limiting columns are fixed on both sides of the first connecting block, and a limiting plate is arranged below the limiting column. The limiting plate is fixedly connected to the telescopic arm. Coil springs are fixed on both sides of the telescopic arm close to the first connecting block, and the inner side of the coil spring is fixedly connected to the rotating shaft of the first connecting block. A plurality of teeth are arranged on one side of the first connecting block close to the telescopic arm, and a tooth plate is fixed on one side of the second guide sleeve close to the first connecting block. The first connecting block can be meshed and connected with the tooth plate, and an opening is arranged above the placement shell.

9. The single-seat sleeve regulating valve according to claim 7, characterized in that: A plurality of top columns are fixed to the bottom end of the water retaining block, a plurality of top material holes are opened inside the sealing sleeve, the top material holes are arranged between two adjacent fixed columns, and the top columns can be inserted inside the top material holes.

10. The single-seat sleeve regulating valve according to claim 1, characterized in that: A first guide sleeve is fixed to the bottom end of the valve body, a first motor is installed below the first guide sleeve, a first threaded rod is fixed to the end of the rotating shaft of the first motor, a temporary sealing head is arranged above the first guide sleeve, the bottom end of the temporary sealing head is inserted into the first guide sleeve, and the first threaded rod and the temporary sealing head are threadedly connected.

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