Centrifugal pump sealing structure

Abstract

The invention relates to the technical field of centrifugal pumps, and discloses a centrifugal pump sealing structure which comprises a supporting mechanism, a driving assembly is fixedly installed on the inner wall of the supporting mechanism, a sealing assembly is installed on the inner wall of the supporting mechanism, and after a pump body conveys liquid, a motor is stopped so that a rotating rod can stop rotating; the centrifugal force generated by the rotating rod disappears, the spring arc-shaped block is influenced by resilience force and returns, the thrust on the sliding plate disappears, the resilience force of the first spring reset rod is released, the first extrusion plate is pushed to ascend, the air pressure at the bottom of the first extrusion plate is reduced, and liquid permeating into the connecting position of the rotating rod and the pump body can be sucked through the liquid storage tank; and the liquid enters the placing groove until the liquid enters the placing groove, so that the liquid infiltrating into the movable ring is sucked, the liquid infiltrating into the movable ring is prevented from being pushed by the subsequently infiltrated liquid to move towards the movable ring, the liquid is infiltrated again, the infiltrating time of the liquid is prolonged, and the movable ring and the static ring are effectively prevented from being corroded by the conveyed liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifugal pump equipment, and specifically to a sealing structure for a centrifugal pump. Background Technique

[0002] A centrifugal pump refers to a pump that uses the centrifugal force generated by the rotation of an impeller to transport liquid. A centrifugal pump works by using the rotation of the impeller to cause the liquid to undergo centrifugal motion. Before starting the centrifugal pump, the pump casing and the suction pipe must be filled with liquid. Then, the motor is started, causing the pump shaft to drive the impeller and the liquid to rotate at a high speed. The liquid undergoes centrifugal motion and is thrown towards the outer edge of the impeller, flowing into the pressure water pipeline of the centrifugal pump through the flow channel of the volute pump casing.

[0003] Among them, for the mechanical seal structure used in centrifugal pumps, each time the centrifugal pump is used, a small amount of liquid often seeps towards the positions of the dynamic ring and the static ring. When the sealed pump stops, the liquid will remain in this position. When the centrifugal pump is used next time, the liquid that has seeped near the dynamic ring and the static ring will be pushed by the newly seeping liquid and quickly seep towards the dynamic ring and the static ring, possibly causing the seeping liquid to enter the dynamic ring and the static ring, which may corrode the dynamic ring and the static ring and affect the service life of the dynamic ring and the static ring. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a sealing structure for a centrifugal pump, including a support mechanism. A driving component is fixedly installed on the inner wall of the support mechanism. A sealing component is installed on the inner wall of the support mechanism, and the sealing component is used to seal the connection part of the centrifugal pump; A suction mechanism, the suction mechanism is installed on the inner wall of the support mechanism, and the suction mechanism is slidably arranged on the inner wall of the support mechanism, and is used to extract the accumulated liquid inside the support mechanism; A buffer mechanism, the buffer mechanism is located inside the suction mechanism, and is used to slow down the suction speed of the suction mechanism, and: A drainage mechanism, the drainage mechanism is located inside the suction mechanism, and through the push of the drainage mechanism, the accumulated liquid extracted by the suction mechanism is discharged from inside the support mechanism; Among them, the support mechanism seals the connection part of the centrifugal pump through the sealing device on the inner wall. When there is accumulated water in the support mechanism, the suction speed of the suction mechanism is slowed down by the buffer mechanism to extract the accumulated liquid, and finally the accumulated liquid is discharged through the drainage mechanism to complete the extraction of the accumulated liquid.

[0005] Preferably, a pump body is arranged inside the support mechanism, and the support mechanism includes: A driving component, the top of the driving component is fixedly arranged with the bottom of the pump body, and is used to drive the impeller inside the pump body to rotate; A sealing component, the outer wall of the sealing component is rotatably arranged with the inner wall of the pump body, and is used to seal the connection part between the pump body and the driving component; Among them, the driving component drives the impeller inside the pump body to rotate, and the connection between the driving component and the pump body is sealed by the sealing component.

[0006] Preferably, the suction mechanism includes: An expansion component, which is slidably arranged on the inner wall of the driving component through a centrifugal part and is used for outward expansion; The centrifugal part includes an annular groove opened at the inner wall of the pump body, and eight spring arc-shaped blocks are rotatably connected to the inner wall of the annular groove; A suction component, which is slidably arranged on the inner wall of the pump body through a sliding part and is used for sucking the accumulated liquid inside the pump body; The sliding part includes a placement groove opened at the inner wall of the pump body, and a sliding plate is slidably connected to the inner wall of the placement groove, which is used to provide the power for the pump body to extract the accumulated liquid; Among them, when the equipment is running, the centrifugal force generated can throw out the expansion component and push the suction component to move, so as to extract the accumulated liquid inside the pump body.

[0007] Preferably, the buffer mechanism includes: An extrusion component, which is fixedly arranged on the inner wall of the suction component through a fixing part and is used for extruding gas; The fixing part includes a pneumatic frame fixedly connected to the inner wall of the placement groove. A second extrusion plate is slidably connected to the inner wall of the pneumatic frame, and two air delivery pipes penetrate through the top of the pneumatic frame; A delivery component, which is fixedly arranged on the inner wall of the extrusion component through a hydraulic part and is used for slowing down the return speed of the suction component when the suction component returns to its original position; The hydraulic part includes a liquid delivery pipe fixedly connected to the inner wall of the air delivery pipe. A first piston rod is slidably connected to the inner wall of each of the two liquid delivery pipes, which is used to cancel the blockage of the gas extruded inside the pneumatic frame; Among them, when the second extrusion plate extrudes the gas inside the pneumatic frame, it will be blocked by the delivery component, causing the gas pressure to rise. As the second extrusion plate continues to move, the delivery component will cancel the blockage of the gas, so that the gas slows down the return speed of the suction component.

[0008] Preferably, the drainage mechanism includes: A jet component, which is fixedly arranged on the inner wall of the pump body through a blocking part and is used for blocking the jet of gas; The blocking part includes two second fixing cylinders fixedly connected to the inner wall of the pump body. A spring ring is slidably connected to the inner wall of each of the two second fixing cylinders, and a jet pipe penetrates through the inner wall of each of the two second fixing cylinders; A gas blocking component, which is fixedly arranged on the inner wall of the jet component through a slowing part and is used for slowing down the jet speed of the gas inside the jet pipe; The slowing part includes a spherical rod fixedly connected to the bottom of the spring ring, and four inclined plane gas blocking rings are slidably connected to the inner wall of each of the two jet pipes Among them, the gas that slows down the movement of the suction component will enter the second fixed cylinder. After the suction component finishes extracting the liquid accumulation, the gas in the second fixed cylinder will slow down the impact force of the gas in the spray pipe through the air-blocking component, and finally be ejected through the spray pipe to push the liquid accumulation out.

[0009] Preferably, the driving component includes a base arranged inside the support mechanism. The top of the base is fixedly connected to the bottom of the pump body. A motor is fixedly connected to the top of the base. The output end at the side wall of the motor is fixedly connected to a rotating rod, and the outer wall of the rotating rod is rotatably connected to the inner wall of the pump body. The sealing component includes a moving ring fixedly connected to the outer wall of the rotating rod, and a stationary ring is fixedly connected to the inner wall of the pump body. Among them, starting the motor drives the rotating rod to rotate, enabling the impeller inside the pump body to work. Through the moving ring and the stationary ring, the connection between the pump body and the rotating rod is sealed.

[0010] Preferably, the expansion component includes eight sliding grooves opened on the inner wall of the rotating rod. The outer walls of the eight spring arc-shaped blocks are all slidably connected to the inner walls of the eight sliding grooves, and the spring arc-shaped blocks are thrown out by the centrifugal force generated by the rotation of the rotating rod. The suction component includes a rotating frame rotatably connected to the inner wall of the placement groove. A liquid storage groove is opened on the inner wall of the pump body. A first pressing plate is slidably connected to the inner wall of the placement groove, and a first spring return rod is fixedly connected to the bottom of the first pressing plate. The outer wall of the first spring return rod is slidably connected to the inner wall of the pump body. The inner wall of the rotating frame is slidably connected to the top of the sliding plate, and the inner wall of the rotating frame is slidably connected to the top of the first pressing plate. Among them, when the expansion component expands outwards, it will push the sliding plate to rise, causing the rotating frame to rotate, so that the first pressing plate descends and approaches the liquid storage groove. When the rotating rod stops, the centrifugal force that throws out the expansion component disappears, and the first pressing plate will rise to suck the liquid accumulation in the pump body from the liquid storage groove. Utilizing the characteristic of generating centrifugal force during the above rotation, when the rotating rod rotates, an outward-extending centrifugal force will be generated, and the spring arc-shaped block will be affected by the centrifugal force and extend outwards, storing its resilience until the spring arc-shaped block is fully unfolded, as Figure 5As shown in the figure, during the extension process of the spring arc-shaped block, it will contact the sliding plate and push the sliding plate upward. The upward movement of the sliding plate will push the rotating frame to rotate. One side of the rotating frame in contact with the sliding plate will rise, and the other side will fall. The falling side will push the extrusion plate I downward, making the extrusion plate I approach the liquid storage tank, resetting the extrusion spring reset rod I, and enabling it to accumulate resilience. After the pump body finishes transporting the liquid, the motor is stopped to make the rotating rod stop rotating. The centrifugal force generated by the rotating rod disappears. Affected by the resilience, the spring arc-shaped block will return to its original position, and the thrust on the sliding plate will disappear. The resilience of the spring reset rod I will be released, pushing the extrusion plate I upward. The air pressure at the bottom of the extrusion plate I will decrease, and the liquid infiltrating into the connection position between the rotating rod and the pump body will be attracted through the liquid storage tank. The attracted liquid will move through the liquid storage tank into the placement groove until the liquid enters the placement groove, thereby sucking the liquid infiltrating towards the dynamic ring, preventing the liquid infiltrating towards the dynamic ring from being pushed by the subsequently infiltrated liquid towards the dynamic ring, thus allowing the liquid to infiltrate again, extending the infiltration time of the liquid, and effectively preventing the dynamic ring and the static ring from being corroded by the transported liquid, affecting their service lives.

[0011] Preferably, the extrusion assembly includes an air inlet pipe connected through the side wall of the air pressure frame. The inner wall of the extrusion plate II is fixedly connected to the outer wall of the sliding plate. A spring ball rod is slidably connected to the inner wall of the air delivery pipe. The inner wall of the sliding plate is slidably connected to the outer walls of the two air delivery pipes. Gas is supplemented into the air pressure frame through the air inlet pipe, and the gas in the air pressure frame is blocked by the spring ball rod. The delivery assembly includes a piston rod II slidably connected to the inner wall of the infusion pipe. Hydraulic oil is provided in the inner walls of the two infusion pipes. Two fixing cylinders I are fixedly connected to the inner wall of the air pressure frame. The inner walls of the two fixing cylinders I are both connected through the outer wall of the air delivery pipe. Among them, when the spring arc-shaped block rises, it will drive the extrusion plate II to rise, squeezing the gas in the air pressure frame. The squeezed gas will be blocked by the extrusion spring ball rod, increasing the gas pressure. Utilizing the above characteristics of squeezing the gas, as the extrusion plate II continues to move, the extrusion plate II will contact the piston rod I and push the piston rod I to move. The piston rod I will squeeze the hydraulic oil in the infusion pipe to move. The squeezed hydraulic oil will push the piston rod II to move, and the piston rod II will push the spring ball rod to move, causing the spring ball rod to separate from the inclined surface of the air delivery pipe. At this time, the high-pressure gas will enter the fixing cylinder I through the air delivery pipe.

[0012] Preferably, the delivery assembly includes piston rings slidably connected to the inner walls of the fixing cylinders I. The bottoms of the two piston rings are fixedly connected to the tops of the extrusion plate I. Two inclined surface rods are slidably connected to the inner walls of the two fixing cylinders I. The bottoms of the two inclined surface rods are rotatably connected to a connecting rod I. The inner walls of the two connecting rods I are rotatably connected to the side walls of the two spring ball rods. Among them, when the second extrusion plate continues to rise, the second extrusion plate will push the first piston rod to move, causing the second piston rod to push the spring ball rod to move, allowing gas to enter the first fixed cylinder, making the gas at the top of the piston ring under high pressure. When the spring ball rod moves, it will also push the first connecting rod to rotate, causing the first connecting rod to push the inclined rod to rise, making the inclined rod contact the inclined surface of the first fixed cylinder, so that the high-pressure gas accumulates in the first fixed cylinder. When the first extrusion plate rises, it will push the rotating frame to rotate, causing the sliding plate to descend, driving the second extrusion plate to descend. The second extrusion plate will separate from the first piston rod, and the thrust on the spring ball rod will disappear. The resilience of the spring ball rod will be released, causing it to return to its original position. After the spring ball rod returns to its original position, it will block the gas in the first fixed cylinder to prevent the gas from entering the air pressure frame again. After the spring ball rod returns to its original position, the inclined rod will also descend to cancel the blockage of the gas. When the first extrusion plate rises, it will drive the piston ring to rise. The high-pressure gas at the top of the piston ring will slow down the rising speed of the piston ring.

[0013] Preferably, the jet component includes two fixed rods fixedly connected to the top of the first extrusion plate. Two drainage grooves are formed in the inner wall of the pump body, and a blocking rod is slidably connected to the inner wall of each of the two drainage grooves. The inner wall of the first extrusion plate is slidably connected to the outer walls of the two jet pipes, and the accumulated liquid extracted by the extraction component is discharged through the drainage grooves. Two connecting rods two are rotatably connected to the side walls of the two blocking rods, and the inner walls of the two connecting rods two are rotatably connected to the bottom of the first extrusion plate. When the first extrusion plate descends, it will drive the connecting rod two to rotate, and the blocking rod is pulled into the drainage groove through the connecting rod two, making the placement groove in a sealed state. When the first extrusion plate descends, it will also drive the fixed rod to separate from the spring ring. Since the spring ring was in a compressed state before, after the two are separated, the resilience of the spring ring will be released, causing it to return to its original position and blocking the jet pipe. When the liquid attracted when the first extrusion plate rises enters the drainage groove, the first extrusion plate rises through the connecting rod two, which will push the blocking rod away from the first extrusion plate, attracting the liquid in the drainage groove to move. The gas blocking component includes a second spring return rod slidably connected to the inner wall of the jet pipe, and the side walls of the eight second spring return rods are fixedly connected to the side walls of the eight inclined gas blocking rings. Among them, when the first extrusion plate rises, it will drive the fixed rod to rise until the fixed rod pushes up the spring ring, allowing the gas in the second fixed cylinder to enter the jet pipe, enter the drainage groove through the jet pipe, and push the liquid in the drainage groove out. When the spring ring descends, it will drive the ball rod to separate from the inclined gas blocking ring. Since the second spring return rod was in a compressed state before, after the ball rod separates from the inclined gas blocking ring, the resilience of the second spring return rod will be released, causing the inclined gas blocking ring to return to its original position and the inclined gas blocking ring to close, as Figure 13As shown, when the spring ring rises, it will drive the spherical ball rod to rise. The spherical ball rod will squeeze the inclined plane air-blocking ring, causing the inclined plane air-blocking ring to separate and creating a gap between the inclined plane air-blocking rings. The high-pressure gas will enter the spray pipe through the gap, reducing the impact force generated by the gas.

[0014] The present invention has the following beneficial effects: (1) When in use, the user moves the device to the position where the liquid needs to be transported, then connects the pipeline to the pump body, and then starts the motor to drive the rotating rod to rotate. The rotating rod drives the impeller inside the pump body to rotate for liquid transportation. The dynamic ring and the static ring are used to seal the connection position between the pump body and the rotating rod. When the rotating rod rotates, a centrifugal force that extends outward will be generated. The spring arc-shaped block will be affected by the centrifugal force and extend outward, accumulating its resilience until the spring arc-shaped block is fully unfolded. As Figure 5 shown, during the extension process of the spring arc-shaped block, it will contact the sliding plate and push the sliding plate upward. The upward movement of the sliding plate will push the rotating frame to rotate. One side of the rotating frame in contact with the sliding plate will rise, and the other side will fall. The falling side will push the pressing plate one downward, causing the pressing plate one to approach the liquid storage tank and compressing the spring reset rod one, accumulating its resilience. After the pump body finishes transporting the liquid, the motor is stopped to make the rotating rod stop rotating. The centrifugal force generated by the rotating rod disappears. Affected by the resilience, the spring arc-shaped block will return to its original position, and the thrust on the sliding plate will disappear. The resilience of the spring reset rod one will be released, pushing the pressing plate one upward. The air pressure at the bottom of the pressing plate one will decrease, and the liquid that has penetrated into the connection position between the rotating rod and the pump body will be attracted through the liquid storage tank. The attracted liquid will move into the placement groove through the liquid storage tank until the liquid enters the placement groove, thereby sucking the liquid that has penetrated toward the dynamic ring, preventing the liquid that has penetrated toward the dynamic ring from being pushed by the subsequently penetrated liquid toward the dynamic ring, thus allowing the liquid to penetrate again, prolonging the penetration time of the liquid, and effectively preventing the dynamic ring and the static ring from being corroded by the transported liquid, affecting their service lives.

[0015] (2)When the sliding plate rises in the present invention, it will also drive the second extrusion plate to rise. After the second extrusion plate separates from the intake pipe, the gas in the air pressure frame will be extruded. The extruded gas will enter the air delivery pipe. At this time, the extruded gas will be blocked by the spring ball rod, so the gas pressure will increase. With the continuous movement of the second extrusion plate, the second extrusion plate will contact the first piston rod and push the first piston rod to move. The first piston rod will extrude the hydraulic oil in the infusion pipe to move. The extruded hydraulic oil will push the second piston rod to move. The second piston rod will push the spring ball rod to move, and then the spring ball rod will be separated from the inclined plane of the air delivery pipe. At this time, the high-pressure gas will enter the first fixed cylinder through the air delivery pipe. Among them, when the spring ball rod moves, it will also push the first connecting rod to rotate, so that the first connecting rod pushes the inclined plane rod to rise, making the inclined plane rod contact the inclined plane of the first fixed cylinder, and the high-pressure gas will be gathered in the first fixed cylinder. When the first extrusion plate rises, it will push the rotating frame to rotate, causing the sliding plate to descend, driving the second extrusion plate to descend. The second extrusion plate will be separated from the first piston rod, and the thrust on the spring ball rod will disappear. The resilience of the spring ball rod will be released, causing it to return to its original position. After the spring ball rod returns to its original position, it will block the gas in the first fixed cylinder to prevent the gas from entering the air pressure frame again. When the spring ball rod returns to its original position, the inclined plane rod will also descend to cancel the blockage of the gas. When the first extrusion plate rises, it will drive the piston ring to rise. The high-pressure gas at the top of the piston ring will slow down the rising speed of the piston ring. The gas pushed by the piston ring will enter the second fixed cylinder. The rising speed of the piston ring is slowed down, and the rising speed of the first extrusion plate will also be slowed down, causing the first extrusion plate to rise slowly, so that the negative pressure at the bottom of the first extrusion plate can stably attract the liquid, and the liquid can be stably sucked out, effectively preventing the rapid release of the resilience of the first spring return rod, resulting in the rapid rise of the first extrusion plate, making the duration of the negative pressure shorter and it is difficult to fully attract the liquid to flow.

[0016] (3)When the first extrusion plate descends in the present invention, it will drive the second connecting rod to move, causing the second connecting rod to rotate and pull the blocking rod closer to the first extrusion plate, making the placement groove in a closed state. At the same time, when the first extrusion plate descends, it will also drive the fixed rod to separate from the spring ring. Since the spring ring was in a compressed state before, after the two separate, the resilience of the spring ring will be released, causing it to return to its original position and block the spray pipe. When the liquid attracted by the rising of the first extrusion plate enters the drainage groove, the rising of the first extrusion plate will push the blocking rod away from the first extrusion plate through the second connecting rod, attracting the liquid in the drainage groove to move. At the same time, during the continuous rising process of the first extrusion plate, it will drive the fixed rod to push the spring ring to rise, causing it to be compressed. When the spring ring moves, the blockage of the spray pipe disappears, and the gas entering the second fixed cylinder will be sprayed out through the spray pipe towards the drainage groove, pushing the liquid in the drainage groove to be discharged. By attracting the liquid to move through the blocking rod and cooperating with the gas sprayed out by the spray pipe to push the liquid to move, the liquid can be fully discharged from the drainage groove, effectively preventing the existence of liquid in the drainage groove from affecting the first extrusion plate's attraction of the liquid seeping into the connection position between the rotating rod and the pump body.

[0017] (4) When the spring ring descends in the present invention, it will drive the spherical ball rod to separate from the inclined plane air-blocking ring. Since the spring reset rod II was in a compressed state before, after the spherical ball rod separates from the inclined plane air-blocking ring, the resilience of the spring reset rod II will be released, causing the inclined plane air-blocking ring to return to its original position and close, as Figure 13 shown. When the spring ring ascends, it will drive the spherical ball rod to ascend. The spherical ball rod will squeeze the inclined plane air-blocking ring, causing the inclined plane air-blocking ring to separate, creating a gap between the inclined plane air-blocking rings. High-pressure gas will enter the spray pipe through the gap and spray into the drainage trough. As the spherical ball rod continues to move, the gap between the inclined plane air-blocking rings will become larger. By allowing high-pressure gas to enter the spray pipe through a small gap, since the high-pressure gas is in a compressed state itself, when it enters the spray pipe through the small gap, due to the sudden increase in space, the gas will expand rapidly, thereby reducing the kinetic energy of the gas and the impact force generated by the gas. This effectively prevents the initial pressure of the high-pressure gas in the fixed cylinder II from being too large and generating a large impact force, causing the liquid in the drainage trough to splash everywhere. Additionally, as the gas pressure weakens, the leaking gap also becomes larger, facilitating the flow of the gas after the pressure reduction and ensuring the gas circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 is a schematic cross-sectional view of the pump body of the present invention; Figure 4 is a schematic cross-sectional view of the rotating rod of the present invention; Figure 5 is a schematic diagram of the working process of the spring arc block of the present invention; Figure 6 is a schematic diagram of the internal structure of the placement groove of the present invention; Figure 7 is a schematic right cross-sectional view of the pump body of the present invention; Figure 8 is of the present invention Figure 7 enlarged schematic diagram of A; Figure 9 is a schematic cross-sectional view of the air pressure frame of the present invention; Figure 10 is of the present invention Figure 9 enlarged schematic diagram of B; Figure 11 For the present invention Figure 9 Schematic enlarged view of C in the present invention; Figure 12 Schematic cross-sectional view of the air injection pipe of the present invention; Figure 13 Schematic working process diagram of the inclined plane air blocking ring of the present invention.

[0020] In the accompanying drawings, the list of components represented by each reference numeral is as follows: In the figure: 1. Support mechanism; 11. Driving component; 12. Sealing component; 13. Pump body; 111. Base; 112. Motor; 113. Rotating rod; 121. Active ring; 122. Static ring; 2. Suction mechanism; 21. Expansion component; 22. Absorbing component; 211. Annular groove; 212. Spring arc-shaped block; 213. Sliding groove; 221. Placing groove; 222. Sliding plate; 223. Liquid storage tank; 224. Rotating frame; 225. First extrusion plate; 226. First spring return rod; 3. Buffer mechanism; 31. Extrusion component; 32. Delivery component; 311. Air pressure frame; 312. Air inlet pipe; 313. Second extrusion plate; 314. Air delivery pipe; 315. Spring ball rod; 321. Liquid infusion pipe; 322. First piston rod; 323. Second piston rod; 324. First fixed cylinder; 325. Piston ring; 326. Inclined plane rod; 327. First connecting rod; 4. Drainage mechanism; 41. Air injection component; 42. Air blocking component; 411. Second fixed cylinder; 412. Spring ring; 413. Fixed rod; 414. Air injection pipe; 415. Drainage groove; 416. Blocking rod; 417. Second connecting rod; 421. Ball rod; 422. Inclined plane air blocking ring; 423. Second spring return rod. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In Embodiment 1, please refer to Figures 1 - 8 , the present invention is a centrifugal pump sealing structure, including a support mechanism 1. A driving component 11 is fixedly installed on the inner wall of the support mechanism 1. A sealing component 12 is installed on the inner wall of the support mechanism 1, and the sealing component 12 is used to seal the connection part of the centrifugal pump; A suction mechanism 2, the suction mechanism 2 is installed on the inner wall of the support mechanism 1, and the suction mechanism 2 is slidably arranged on the inner wall of the support mechanism 1 for sucking the accumulated liquid inside the support mechanism 1; The buffer mechanism 3 is located at the inner wall of the suction mechanism 2 and is used to slow down the suction speed of the suction mechanism 2, and: The drainage mechanism 4 is located at the inner wall of the suction mechanism 2. Through the push of the drainage mechanism 4, the accumulated liquid extracted by the suction mechanism 2 is discharged from the inside of the support mechanism 1; Among them, the support mechanism 1 seals the connection of the centrifugal pump through the sealing device on the inner wall. When there is accumulated water in the support mechanism 1, the suction speed of the suction mechanism 2 is slowed down by the buffer mechanism 3 to extract the accumulated liquid, and finally the accumulated liquid is discharged through the drainage mechanism 4 to complete the extraction of the accumulated liquid.

[0023] A pump body 13 is arranged inside the support mechanism 1. The support mechanism 1 includes: The drive assembly 11, the top of the drive assembly 11 is fixedly arranged with the bottom of the pump body 13 and is used to drive the impeller inside the pump body 13 to rotate; The sealing assembly 12, the outer wall of the sealing assembly 12 is rotatably arranged with the inner wall of the pump body 13 and is used to seal the connection between the pump body 13 and the drive assembly 11; Among them, the drive assembly 11 drives the impeller inside the pump body 13 to rotate, and the connection between the drive assembly 11 and the pump body 13 is sealed by the sealing assembly 12.

[0024] The suction mechanism 2 includes: The expansion assembly 21, the expansion assembly 21 is slidably arranged on the inner wall of the drive assembly 11 through a centrifugal member and is used to expand outwards; The centrifugal member includes an annular groove 211 opened on the inner wall of the pump body 13, and eight spring arc-shaped blocks 212 are rotatably connected to the inner wall of the annular groove 211; The suction assembly 22, the suction assembly 22 is slidably arranged on the inner wall of the pump body 13 through a sliding member and is used to suck the accumulated liquid inside the pump body 13; The sliding member includes a placement groove 221 opened on the inner wall of the pump body 13, and a sliding plate 222 is slidably connected to the inner wall of the placement groove 221 and is used to provide the power for the pump body 13 to extract the accumulated liquid; Among them, when the equipment is running, the centrifugal force generated can throw out the expansion assembly 21 and push the suction assembly 22 to move, so as to extract the accumulated liquid inside the pump body 13.

[0025] The buffer mechanism 3 includes: The extrusion assembly 31, the extrusion assembly 31 is fixedly arranged on the inner wall of the suction assembly 22 through a fixing member and is used to extrude gas; The fixing member includes a pneumatic frame 311 fixedly connected to the inner wall of the placement groove 221. An extrusion plate two 313 is slidably connected to the inner wall of the pneumatic frame 311, and two air pipes 314 are connected through the top of the pneumatic frame 311; The conveying component 32 is fixedly arranged on the inner wall of the extrusion component 31 through a hydraulic component, and is used for slowing down the return speed of the suction component 22 when the suction component 22 returns to its original position; The hydraulic component includes a liquid delivery pipe 321 fixedly connected to the inner wall of the gas delivery pipe 314. A first piston rod 322 is slidably connected to the inner walls of both liquid delivery pipes 321, and is used for canceling the blockage of the gas compressed inside the air pressure frame 311; Among them, when the second extrusion plate 313 extrudes the gas inside the air pressure frame 311, it will be blocked by the conveying component 32, causing the gas pressure to rise. As the second extrusion plate 313 continues to move, the conveying component 32 will cancel the blockage of the gas, so that the gas slows down the return speed of the suction component 22.

[0026] The drainage mechanism 4 includes: The air jet component 41 is fixedly arranged on the inner wall of the pump body 13 through a blocking component, and is used for blocking the jet of gas; The blocking component includes two second fixed cylinders 411 fixedly connected to the inner wall of the pump body 13. A spring ring 412 is slidably connected to the inner walls of both second fixed cylinders 411. A gas jet pipe 414 is connected through the inner walls of both second fixed cylinders 411; The gas blocking component 42 is fixedly arranged on the inner wall of the air jet component 41 through a deceleration component, and is used for slowing down the jet speed of the gas inside the gas jet pipe 414; The deceleration component includes a spherical rod 421 fixedly connected to the bottom of the spring ring 412. Four inclined gas blocking rings 422 are slidably connected to the inner walls of both gas jet pipes 414, Among them, the gas that slows down the movement of the suction component 22 will enter the second fixed cylinder 411. When the suction component 22 finishes extracting the accumulated liquid, the gas inside the second fixed cylinder 411 will slow down the impact force of the gas inside the gas jet pipe 414 through the gas blocking component 42, and finally be ejected through the gas jet pipe 414 to push the accumulated liquid out.

[0027] Embodiment 2. Please refer to Figures 9 - 13 , the present invention is a centrifugal pump sealing structure. On the basis of Embodiment 1, the driving component 11 includes a base 111 arranged inside the support mechanism 1. The top of the base 111 is fixedly connected to the bottom of the pump body 13. A motor 112 is fixedly connected to the top of the base 111. An output end on the side wall of the motor 112 is fixedly connected to a rotating rod 113, and the outer wall of the rotating rod 113 is rotatably connected to the inner wall of the pump body 13; The sealing component 12 includes a moving ring 121 fixedly connected to the outer wall of the rotating rod 113, and a static ring 122 is fixedly connected to the inner wall of the pump body 13; Among them, the starting motor 112 drives the rotating rod 113 to rotate, causing the impeller inside the pump body 13 to work. Through the dynamic seal ring 121 and the static seal ring 122, the connection between the pump body 13 and the rotating rod 113 is sealed.

[0028] The expansion assembly 21 includes eight sliding grooves 213 formed in the inner wall of the rotating rod 113. The outer walls of the eight spring arc-shaped blocks 212 are all slidably connected to the inner walls of the eight sliding grooves 213, and the spring arc-shaped blocks 212 are thrown out by the centrifugal force generated by the rotation of the rotating rod 113. The suction assembly 22 includes a rotating frame 224 rotatably connected to the inner wall of the placement groove 221. A liquid storage groove 223 is formed in the inner wall of the pump body 13. A first pressing plate 225 is slidably connected to the inner wall of the placement groove 221, and a first spring return rod 226 is fixedly connected to the bottom of the first pressing plate 225. The outer wall of the first spring return rod 226 is slidably connected to the inner wall of the pump body 13. The inner wall of the rotating frame 224 is slidably connected to the top of the sliding plate 222, and the inner wall of the rotating frame 224 is slidably connected to the top of the first pressing plate 225. Among them, when the expansion assembly 21 expands outwards, it will push the sliding plate 222 to rise, causing the rotating frame 224 to rotate, so that the first pressing plate 225 descends and approaches the liquid storage groove 223. When the rotating rod 113 stops, the centrifugal force that throws out the expansion assembly 21 disappears, and the first pressing plate 225 will rise to suck the accumulated liquid in the pump body 13 from the liquid storage groove 223. Utilizing the characteristic of generating centrifugal force during rotation as described above, when the rotating rod 113 rotates, an outward-extending centrifugal force will be generated, and the spring arc-shaped block 212 will be affected by the centrifugal force and extend outwards, enabling it to accumulate resilience until the spring arc-shaped block 212 is fully unfolded, as Figure 5As shown, during the extension process of the spring arc block 212, it will contact the sliding plate 222 and push the sliding plate 222 to rise. When the sliding plate 222 rises, it will push the rotating frame 224 to rotate. One side of the rotating frame 224 in contact with the sliding plate 222 will rise, and the other side will fall. The falling side will push the first pressing plate 225 to descend, making the first pressing plate 225 approach the liquid storage tank 223 and compressing the first spring return rod 226 to accumulate its resilience. After the pump body 13 finishes transporting the liquid, the motor 112 is stopped to make the rotating rod 113 stop rotating, and the centrifugal force generated by the rotating rod 113 disappears. Affected by the resilience, the spring arc block 212 will return to its original position, and the thrust on the sliding plate 222 will disappear. The resilience of the first spring return rod 226 will be released, pushing the first pressing plate 225 to rise. The air pressure at the bottom of the first pressing plate 225 will then decrease, and through the liquid storage tank 223, it will attract and infiltrate the liquid at the connection position between the rotating rod 113 and the pump body 13. The attracted liquid will move through the liquid storage tank 223 into the placement groove 221 until the liquid enters the placement groove 221, thereby sucking the liquid infiltrating towards the dynamic seal ring 121, preventing the liquid infiltrating towards the dynamic seal ring 121 from being pushed by the subsequently infiltrated liquid towards the dynamic seal ring 121, so as to allow the liquid to infiltrate again, extending the infiltration time of the liquid, and effectively preventing the dynamic seal ring 121 and the static seal ring 122 from being corroded by the transported liquid and affecting their service lives.

[0029] The extrusion assembly 31 includes an air inlet pipe 312 connected through the side wall of the air pressure frame 311. The inner wall of the second pressing plate 313 is fixedly connected to the outer wall of the sliding plate 222. A spring ball rod 315 is slidably connected to the inner wall of the air delivery pipe 314. The inner wall of the sliding plate 222 is slidably connected to the outer walls of the two air delivery pipes 314. Gas is supplied to the air pressure frame 311 through the air inlet pipe 312, and the gas in the air pressure frame 311 is blocked by the spring ball rod 315. The delivery assembly 32 includes a second piston rod 323 slidably connected to the inner wall of the infusion pipe 321. Hydraulic oil is provided in the inner walls of the two infusion pipes 321. Two first fixed cylinders 324 are fixedly connected to the inner wall of the air pressure frame 311, and the inner walls of the two first fixed cylinders 324 are in through connection with the outer walls of the air delivery pipes 314. Among them, when the spring arc block 212 rises, it will drive the second extrusion plate 313 to rise, so that the second extrusion plate 313 extrudes the gas in the air pressure frame 311. The extruded gas will be blocked by the extrusion spring ball rod 315, causing the gas pressure to rise. Utilizing the characteristics of the above-mentioned extruded gas, as the second extrusion plate 313 continues to move, the second extrusion plate 313 will contact the first piston rod 322 and push the first piston rod 322 to move. The first piston rod 322 will extrude the hydraulic oil in the infusion tube 321 to move. The extruded hydraulic oil will push the second piston rod 323 to move. The second piston rod 323 will push the extrusion spring ball rod 315 to move, and then the extrusion spring ball rod 315 will be separated from the inclined surface of the gas transmission pipe 314. At this time, the high-pressure gas will enter the first fixed cylinder 324 through the gas transmission pipe 314.

[0030] The conveying assembly 32 includes piston rings 325 slidably connected to the inner wall of the first fixed cylinder 324. The bottoms of the two piston rings 325 are fixedly connected to the top of the first extrusion plate 225. Two inclined surface rods 326 are slidably connected to the inner walls of the two first fixed cylinders 324. The bottoms of the two inclined surface rods 326 are rotatably connected to a first connecting rod 327. The inner walls of the two first connecting rods 327 are rotatably connected to the side walls of the two extrusion spring ball rods 315. Among them, when the second extrusion plate 313 continues to rise, the second extrusion plate 313 will push the first piston rod 322 to move, and the second piston rod 323 will push the extrusion spring ball rod 315 to move, enabling the gas to enter the first fixed cylinder 324, making the gas at the top of the piston ring 325 under high pressure. When the extrusion spring ball rod 315 moves, it will also push the first connecting rod 327 to rotate, causing the first connecting rod 327 to push the inclined surface rod 326 to rise, making the inclined surface rod 326 contact the inclined surface of the first fixed cylinder 324, allowing the high-pressure gas to gather in the first fixed cylinder 324. When the first extrusion plate 225 rises, it will push the rotating frame 224 to rotate, causing the sliding plate 222 to descend, driving the second extrusion plate 313 to descend. The second extrusion plate 313 will be separated from the first piston rod 322, and the thrust on the extrusion spring ball rod 315 will disappear. The resilience of the extrusion spring ball rod 315 will be released, causing it to return to its original position. After the extrusion spring ball rod 315 returns to its original position, it will block the gas in the first fixed cylinder 324 to prevent the gas from entering the air pressure frame 311 again. When the extrusion spring ball rod 315 returns to its original position, the inclined surface rod 326 will also descend, canceling the blockage of the gas. When the first extrusion plate 225 rises, it will drive the piston ring 325 to rise, and the high-pressure gas at the top of the piston ring 325 will slow down the rising speed of the piston ring 325.

[0031] The jetting assembly 41 includes two fixed rods 413 fixedly connected to the top of the first extrusion plate 225. Two drainage grooves 415 are provided in the inner wall of the pump body 13. Two blocking rods 416 are slidably connected to the inner walls of the two drainage grooves 415. The inner wall of the first extrusion plate 225 is slidably connected to the outer walls of the two jet pipes 414, and the accumulated liquid extracted by the suction assembly 22 is discharged through the drain groove 415; Link rods two 417 are rotatably connected to the side walls of the two blocking rods 416, and the inner walls of the two link rods two 417 are rotatably connected to the bottom of the first extrusion plate 225. When the first extrusion plate 225 descends, it will drive the link rods two 417 to rotate, and pull the blocking rods 416 into the drain groove 415 through the link rods two 417, so that the placement groove 221 is in a sealed state. When the first extrusion plate 225 descends, it will also drive the fixed rod 413 to separate from the spring ring 412. Since the spring ring 412 was in a compressed state before, after the two are separated, the resilience of the spring ring 412 will be released, causing it to return to its original position and blocking the jet pipe 414. When the liquid attracted by the rising of the first extrusion plate 225 enters the drain groove 415, the rising of the first extrusion plate 225 will push the blocking rod 416 away from the first extrusion plate 225 through the link rod two 417, attracting the liquid in the drain groove 415 to move; The air blocking assembly 42 includes spring return rods two 423 slidably connected to the inner walls of the jet pipes 414, and the side walls of the eight spring return rods two 423 are fixedly connected to the side walls of the eight inclined air blocking rings 422; Among them, when the first extrusion plate 225 rises, it will drive the fixed rod 413 to rise until the fixed rod 413 lifts the spring ring 412, allowing the gas in the fixed cylinder two 411 to enter the jet pipe 414, enter the drain groove 415 through the jet pipe 414, and push the liquid in the drain groove 415 out. When the spring ring 412 descends, it will drive the spherical rod 421 to separate from the inclined air blocking ring 422. Since the spring return rod two 423 was in a compressed state before, after the spherical rod 421 separates from the inclined air blocking ring 422, the resilience of the spring return rod two 423 will be released, causing the inclined air blocking ring 422 to return to its original position and the inclined air blocking ring 422 to close. As Figure 13 shown, when the spring ring 412 rises, it will drive the spherical rod 421 to rise, and the spherical rod 421 will squeeze the inclined air blocking ring 422, causing the inclined air blocking ring 422 to separate, so that a gap leaks out between the inclined air blocking rings 422, and the high-pressure gas will enter the jet pipe 414 through the gap, reducing the impact force generated by the gas.

[0032] The quantity of the above components is not limited, and those skilled in the relevant art can freely set it according to actual needs, as long as the above components are installed at the corresponding component connection positions.

[0033] A specific application of this embodiment is as follows: When the present invention is in use, the user moves the device to the position where liquid needs to be transported, then connects the pipeline to the pump body 13, and then starts the motor 112 to drive the rotating rod 113 to rotate. The rotating rod 113 drives the impeller inside the pump body 13 to rotate, so as to transport the liquid. The connection position between the pump body 13 and the rotating rod 113 is sealed by the dynamic seal ring 121 and the static seal ring 122. When the rotating rod 113 rotates, a centrifugal force that extends outward will be generated. The spring arc-shaped block 212 will be affected by the centrifugal force and extend outward, accumulating its resilience until the spring arc-shaped block 212 is fully unfolded. As Figure 5 shown, during the extension process of the spring arc-shaped block 212, it will contact the sliding plate 222 and push the sliding plate 222 to rise. The rising of the sliding plate 222 will push the rotating frame 224 to rotate. One side of the rotating frame 224 in contact with the sliding plate 222 will rise, and the other side will fall. The falling side will push the first pressing plate 225 to descend, making the first pressing plate 225 approach the liquid storage tank 223 and compressing the first spring return rod 226 to accumulate its resilience. After the pump body 13 finishes transporting the liquid, the motor 112 is stopped to make the rotating rod 113 stop rotating. The centrifugal force generated by the rotating rod 113 disappears. The spring arc-shaped block 212 is affected by the resilience and will return to its original position, and the thrust on the sliding plate 222 disappears. The resilience of the first spring return rod 226 will be released, pushing the first pressing plate 225 to rise. The air pressure at the bottom of the first pressing plate 225 will decrease, and the liquid that has penetrated into the connection position between the rotating rod 113 and the pump body 13 will be attracted through the liquid storage tank 223. The attracted liquid will move into the placement groove 221 through the liquid storage tank 223 until the liquid enters the placement groove 221, thereby sucking the liquid that has penetrated towards the dynamic seal ring 121, preventing the liquid that has penetrated towards the dynamic seal ring 121 from being pushed towards the dynamic seal ring 121 by the subsequently penetrated liquid, so as to prevent the liquid from re-penetrating and extending the penetration time of the liquid, effectively preventing the dynamic seal ring 121 and the static seal ring 122 from being corroded by the transported liquid and affecting their service lives; Secondly, when the sliding plate 222 ascends, it will also drive the second pressing plate 313 to ascend. After the second pressing plate 313 separates from the air inlet pipe 312, it will squeeze the gas in the air pressure frame 311. The squeezed gas will enter the air delivery pipe 314. At this time, the squeezed gas will be blocked by the spring ball rod 315. Therefore, the gas pressure will increase. As the second pressing plate 313 continues to move, the second pressing plate 313 will contact the first piston rod 322 and push the first piston rod 322 to move. The first piston rod 322 will squeeze the hydraulic oil in the infusion pipe 321 to move. The squeezed hydraulic oil will push the second piston rod 323 to move. The second piston rod 323 will push the spring ball rod 315 to move, which will separate the spring ball rod 315 from the inclined plane of the air delivery pipe 314. At this time, the high-pressure gas will enter the first fixed cylinder 324 through the air delivery pipe 314. Among them, when the spring ball rod 315 moves, it will also push the first connecting rod 327 to rotate, causing the first connecting rod 327 to push the inclined plane rod 326 to ascend, so that the inclined plane rod 326 contacts the inclined plane of the first fixed cylinder 324, allowing the high-pressure gas to gather in the first fixed cylinder 324. When the first pressing plate 225 ascends, it will push the rotating frame 224 to rotate, causing the sliding plate 222 to descend, driving the second pressing plate 313 to descend. The second pressing plate 313 will separate from the first piston rod 322, and the thrust on the spring ball rod 315 will disappear. The resilience of the spring ball rod 315 will be released, causing it to return to its original position. After the spring ball rod 315 returns to its original position, it will block the gas in the first fixed cylinder 324 to prevent the gas from entering the air pressure frame 311 again. After the spring ball rod 315 returns to its original position, the inclined plane rod 326 will also descend to cancel the blockage of the gas. When the first pressing plate 225 ascends, it will drive the piston ring 325 to ascend. The high-pressure gas at the top of the piston ring 325 will slow down the ascending speed of the piston ring 325. The gas pushed by the piston ring 325 will enter the second fixed cylinder 411. The ascending speed of the piston ring 325 is slowed down, and the ascending speed of the first pressing plate 225 will also be slowed down, causing the first pressing plate 225 to ascend slowly, enabling the negative pressure at the bottom of the first pressing plate 225 to stably suck the liquid, allowing the liquid to be sucked out smoothly, effectively preventing the rapid release of the resilience of the first spring return rod 226, resulting in the rapid ascent of the first pressing plate 225, making the duration of the negative pressure shorter and making it difficult to fully attract the liquid to flow; Secondly, when the first extrusion plate 225 descends, it will drive the second connecting rod 417 to move, causing the second connecting rod 417 to rotate, pulling the blocking rod 416 closer to the first extrusion plate 225, so that the placement groove 221 is in a closed state. At the same time, when the first extrusion plate 225 descends, it will also drive the fixed rod 413 to separate from the spring ring 412. Since the spring ring 412 was in a compressed state before, after the two are separated, the resilience of the spring ring 412 will be released, causing it to return to its original position and blocking the air jet pipe 414. When the liquid attracted by the rising of the first extrusion plate 225 enters the drainage groove 415, the rising of the first extrusion plate 225 drives the second connecting rod 417 to push the blocking rod 416 away from the first extrusion plate 225, attracting the liquid in the drainage groove 415 to move. At the same time, during the continuous rising process of the first extrusion plate 225, it will drive the fixed rod 413 to push the spring ring 412 upward, causing it to be compressed. When the spring ring 412 moves, the blockage of the air jet pipe 414 disappears, and the gas entering the second fixed cylinder 411 will be sprayed out through the air jet pipe 414 towards the drainage groove 415, pushing the liquid in the drainage groove 415 to be discharged. By attracting the liquid to move through the blocking rod 416 and cooperating with the gas sprayed out by the air jet pipe 414 to push the liquid to move, the liquid can be fully discharged from the drainage groove 415, effectively preventing the liquid in the drainage groove 415 from affecting the liquid attracted by the first extrusion plate 225 at the connection position between the rotating rod 113 and the pump body 13; Secondly, when the spring ring 412 descends, it will drive the spherical rod 421 to separate from the inclined plane air blocking ring 422. Since the second spring return rod 423 was in a compressed state before, after the spherical rod 421 separates from the inclined plane air blocking ring 422, the resilience of the second spring return rod 423 will be released, causing the inclined plane air blocking ring 422 to return to its original position and close the inclined plane air blocking ring 422, as Figure 13 shown. When the spring ring 412 rises, it will drive the spherical rod 421 to rise, and the spherical rod 421 will squeeze the inclined plane air blocking ring 422, causing the inclined plane air blocking ring 422 to separate and leaving a gap between the inclined plane air blocking rings 422. The high-pressure gas will enter the air jet pipe 414 through the gap and be sprayed into the drainage groove 415. As the spherical rod 421 continues to move, the gap between the inclined plane air blocking rings 422 will also become larger. By allowing the high-pressure gas to enter the air jet pipe 414 through a small gap, the high-pressure gas is itself in a compressed state. When it enters the air jet pipe 414 through the small gap, due to the sudden increase in space, the gas will expand rapidly, thereby reducing the kinetic energy of the gas and the impact force generated by the gas, effectively preventing the initial pressure of the high-pressure gas in the second fixed cylinder 411 from being too large and generating a large impact force, causing the liquid in the drainage groove 415 to splash everywhere. Another point: as the gas pressure weakens, the leaked gap becomes larger, facilitating the flow of the gas after the gas pressure decreases and ensuring the circulation of the gas; Among them, when the first extrusion plate 225 rises, it will push the rotating frame 224 to rotate, causing the sliding plate 222 to descend, driving the second extrusion plate 313 to descend, so that the top of the second extrusion plate 313 is connected to the air inlet pipe 312 again, allowing external gas to enter the air pressure frame 311 to complete the replenishment of gas.

[0034] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A centrifugal pump sealing structure, characterized in that: Also includes: A support mechanism, wherein a driving assembly is fixedly mounted on the inner wall of the support mechanism, and a sealing assembly is mounted on the inner wall of the support mechanism, wherein the sealing assembly is used to seal the connection of the centrifugal pump; A suction mechanism, the suction mechanism is installed at the inner wall of the support mechanism, the suction mechanism is slidably arranged at the inner wall of the support mechanism, and is used to extract the accumulated liquid inside the support mechanism; A buffer mechanism, the buffer mechanism being located at the inner wall of the suction mechanism and being used to slow down the suction speed of the suction mechanism, and: A drainage mechanism, wherein the drainage mechanism is located at the inner wall of the suction mechanism, and the accumulated liquid extracted by the suction mechanism is discharged from the interior of the support mechanism through the push of the drainage mechanism; The support mechanism seals the connection of the centrifugal pump through a sealing device on the inner wall. When water accumulates in the support mechanism, the buffer mechanism slows down the suction speed of the suction mechanism to extract the accumulated liquid, and finally the accumulated liquid is discharged through the drainage mechanism to complete the extraction of the accumulated liquid.

2. A centrifugal pump sealing structure according to claim 1, characterized in that: A pump body is arranged inside the supporting mechanism, and the supporting mechanism comprises: A driving assembly, the top of which is fixedly arranged on the bottom of the pump body, and is used to drive the impeller inside the pump body to rotate; A sealing assembly, the outer wall of which is rotatably arranged with the inner wall of the pump body, and is used to seal the connection between the pump body and the driving assembly; The driving assembly drives the impeller inside the pump body to rotate, and the connection between the driving assembly and the pump body is sealed by the sealing assembly.

3. A centrifugal pump sealing structure according to claim 2, characterized in that: The suction mechanism comprises: An expansion component, which is slidably disposed on the inner wall of the driving component through a centrifugal member and is used for outward expansion; The centrifugal member comprises an annular groove formed on the inner wall of the pump body, and eight spring arc blocks are rotatably connected to the inner wall of the annular groove; A suction component, which is slidably disposed on the inner wall of the pump body through a sliding member and is used to suck the accumulated liquid inside the pump body; The sliding member comprises a placement groove provided on the inner wall of the pump body, and a sliding plate is slidably connected to the inner wall of the placement groove to provide power for the pump body to extract the accumulated liquid; When the equipment is running, the centrifugal force generated can throw out the expansion component, push the suction component to move, and be used to extract the accumulated liquid inside the pump body.

4. A centrifugal pump sealing structure according to claim 3, characterized in that: The buffer mechanism comprises: An extrusion component, which is fixed to the inner wall of the suction component through a fixing member and is used for extruding gas; The fixing member comprises an air pressure frame fixedly connected to the inner wall of the placement groove, a second extrusion plate is slidably connected to the inner wall of the air pressure frame, and two air delivery pipes are connected through the top of the air pressure frame; A conveying assembly, wherein the conveying assembly is fixedly arranged on the inner wall of the extrusion assembly through a hydraulic component, and is used to slow down the return speed of the suction assembly when the suction assembly returns; The hydraulic component comprises a liquid infusion pipe fixedly connected to the inner wall of the gas delivery pipe, and the inner walls of the two liquid infusion pipes are slidably connected with a piston rod 1, which is used to remove the obstruction of the compressed gas inside the air pressure frame; When the extrusion plate 2 squeezes the gas in the air pressure frame, it will be blocked by the conveying component, causing the gas pressure to increase. As the extrusion plate 2 continues to move, the conveying component will remove the obstruction to the gas, causing the gas to slow down the return speed of the suction component.

5. A centrifugal pump sealing structure according to claim 4, characterized in that: The drainage mechanism comprises: An injection assembly, which is fixedly arranged on the inner wall of the pump body through a blocking member to block the ejection of gas; The blocking member comprises two fixed cylinders 2 fixedly connected to the inner wall of the pump body, the inner walls of the two fixed cylinders 2 are both slidably connected with spring rings, and the inner walls of the two fixed cylinders 2 are both connected with jet pipes; A gas blocking component, which is fixedly arranged on the inner wall of the jetting component through a slowing member, and is used to slow down the ejection speed of the gas in the jetting pipe; The mitigation member comprises a spherical rod fixedly connected to the bottom of the spring ring, and the inner walls of the two jet pipes are slidably connected with four inclined air blocking rings. Among them, the gas that slows down the movement of the suction component will enter the fixed cylinder 2. When the suction component completes extracting the accumulated liquid, the gas in the fixed cylinder 2 will slow down the impact force of the gas in the jet pipe through the gas blocking component, and finally be ejected through the jet pipe to push the accumulated liquid out.

6. A centrifugal pump sealing structure according to claim 5, characterized in that: The driving assembly includes a base arranged inside the supporting mechanism, the top of the base is fixedly connected to the bottom of the pump body, the top of the base is fixedly connected to a motor, the output end of the motor is fixedly connected to a rotating rod at the side wall, and the outer wall of the rotating rod is rotatably connected to the inner wall of the pump body; The sealing assembly comprises a dynamic ring fixedly connected to the outer wall of the rotating rod, and a static ring fixedly connected to the inner wall of the pump body; The starting motor drives the rotating rod to rotate, so that the impeller inside the pump body works, and the connection between the pump body and the rotating rod is sealed through the dynamic ring and the static ring.

7. A centrifugal pump sealing structure according to claim 6, characterized in that: The expansion assembly includes eight sliding grooves formed on the inner wall of the rotating rod, and the outer walls of the eight spring arc blocks are slidably connected to the inner walls of the eight sliding grooves, and the spring arc blocks are thrown out by the centrifugal force generated by the rotation of the rotating rod; The suction assembly includes a rotating frame rotatably connected to the inner wall of the placement groove, the inner wall of the pump body is provided with a liquid storage groove, the inner wall of the placement groove is slidably connected to an extrusion plate 1, and the bottom of the extrusion plate 1 is fixedly connected to a spring return rod 1; The outer wall of the spring return rod 1 is slidably connected to the inner wall of the pump body, the inner wall of the rotating frame is slidably connected to the top of the sliding plate, and the inner wall of the rotating frame is slidably connected to the top of the extrusion plate 1; When the expansion component expands outward, it pushes the sliding plate up and causes the rotating frame to rotate, so that the extrusion plate 1 drops down and approaches the liquid storage tank. When the rotating rod stops, the centrifugal force that throws out the expansion component disappears, and the extrusion plate 1 rises to absorb the accumulated liquid in the pump body from the liquid storage tank.

8. A centrifugal pump sealing structure according to claim 7, characterized in that: The extrusion assembly includes an air inlet pipe connected to the side wall of the air pressure frame, the inner wall of the second extrusion plate is fixedly connected to the outer wall of the sliding plate, the inner wall of the air delivery pipe is slidably connected with a spring round ball rod, the inner wall of the sliding plate is slidably connected to the outer walls of the two air delivery pipes, the air inlet pipe is used to supplement the air in the air pressure frame, and the spring round ball rod is used to block the gas in the air pressure frame; The delivery assembly includes a piston rod 2 slidably connected to the inner wall of the infusion pipe, the inner walls of the two infusion pipes are provided with hydraulic oil, the inner wall of the air pressure frame is fixedly connected to two fixed cylinders 1, and the inner walls of the two fixed cylinders 1 are connected to the outer wall of the air delivery pipe; When the spring arc block rises, it will drive the second extrusion plate to rise, so that the second extrusion plate squeezes the gas in the air pressure frame. The squeezed gas will be blocked by the squeezing spring spherical rod, so that the gas pressure increases.

9. A centrifugal pump sealing structure according to claim 8, characterized in that: The conveying assembly comprises a piston ring slidably connected to the inner wall of the fixed cylinder, and the bottoms of the two piston rings are fixedly connected to the top of the extrusion plate; The inner walls of the two fixing cylinders are slidably connected with inclined rods, the bottoms of the two inclined rods are rotatably connected with connecting rods, and the inner walls of the two connecting rods are rotatably connected with the side walls of the two spring ball rods; Among them, when the extrusion plate 2 continues to rise, the extrusion plate 2 will push the piston rod 1 to move, so that the piston rod 2 pushes the spring ball rod to move, so that the gas enters the fixed cylinder 1, and the gas on the top of the piston ring is under high pressure.

10. A centrifugal pump sealing structure according to claim 9, characterized in that: The jet assembly includes two fixed rods fixedly connected to the top of the extrusion plate, and the inner wall of the pump body is provided with two drainage grooves, and the inner walls of the two drainage grooves are both slidably connected with blocking rods; The inner wall of the extrusion plate 1 is slidably connected to the outer walls of the two air jet pipes, and the accumulated liquid extracted by the suction assembly is discharged through the drainage groove; The side walls of the two blocking rods are rotatably connected with connecting rods 2, and the inner walls of the two connecting rods 2 are rotatably connected with the bottom of the extrusion plate 1. When the extrusion plate 1 descends, the connecting rod 2 is driven to rotate, and the blocking rod is pulled into the drainage groove through the connecting rod 2, so that the placement groove is in a closed state; The air blocking assembly comprises a spring return rod 2 which is slidably connected to the inner wall of the air injection pipe, and the side walls of the eight spring return rods 2 are fixedly connected to the side walls of the eight inclined air blocking rings; When the extrusion plate 1 rises, it will drive the fixed rod to rise until the fixed rod lifts the spring ring, allowing the gas in the fixed tube 2 to enter the jet pipe, and then enter the drainage groove through the jet pipe, pushing the liquid in the drainage groove to be discharged.

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