An adjustable high-temperature centrifugal pump seal cooling device

Abstract

The present invention relates to the technical field of centrifugal pumps, and in particular to an adjustable high-temperature centrifugal pump mechanical seal cooling device, comprising a pump body, a drive motor and a cooling chamber, wherein the cooling chamber is located between the pump body and the drive motor, and a rotating blade is rotatably installed inside the pump body, and a rotating shaft is fixedly installed on the side wall of the rotating blade. The rotation of blade 1 accelerates the flow rate of the cooling medium inside the mechanical seal chamber, thereby improving the cooling effect inside the mechanical seal chamber. The rotating cylinder pulls the ring toward the drain hole through the resistance of the cooling medium, so that a slight gap is formed between the dynamic ring and the static ring. At this time, the cooling medium flows into the dynamic ring and the static ring to form a water film, and cleans the particles generated by the friction between the dynamic ring and the static ring. The push plate is driven by the rotating cylinder to make reciprocating lateral movements, and the push plate is driven to move, so that the push plate shakes the cooling medium inside the mechanical seal chamber, thereby avoiding the precipitation of particles inside the cooling medium.

Description

Technical Field

[0001] The present invention relates to the technical field of centrifugal pumps, and in particular to an adjustable high-temperature centrifugal pump seal cooling device. Background Art

[0002] During the operation of a centrifugal pump, the mechanical seal is an important component to ensure the normal operation of the pump. It can effectively prevent the leakage of the fluid in the pump and prevent the intrusion of foreign substances. The mechanical seal is usually composed of a dynamic ring and a static ring, which form a friction pair and maintain close contact through the action of a spring or liquid pressure to achieve a sealing effect. However, in actual application, due to the relative movement between the friction pairs, heat is generated, and the medium transported by the pump may be corrosive, high temperature or contain solid particles. The mechanical seal is prone to wear, overheating or even failure during operation. Therefore, in order to extend the service life of the mechanical seal and improve the operational reliability of the pump, it is very necessary to cool and lubricate the mechanical seal. For example, an adjustable high The mechanical seal cooling device of the warm centrifugal pump has a narrow design of the mechanical seal component and the mechanical seal installation cavity wall. During operation, driven by the output end of the external drive motor, the coolant entering through the liquid inlet is rotated and transported by the spiral liquid guide groove on the surface of the mechanical seal component to flush the end face of the mechanical seal component and the sealing contact surface of the dynamic ring and the static ring, maintain the water film between the dynamic ring and the static ring, and ensure the sealing effect of the mechanical seal component. However, the narrow design of the mechanical seal component and the mechanical seal installation cavity wall results in a low coolant content, which cannot cool the mechanical seal component in a high temperature environment. At the same time, during the long-term operation of the dynamic ring and the static ring, the water film will become thin until it disappears, and the inability to replenish the water film will cause the dynamic ring and the static ring to be in a dry friction state for a long time, causing the dynamic ring and the static ring to form a high temperature, and increase wear, resulting in the dynamic ring and the static ring being unable to seal. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems in the background technology and to propose an adjustable high-temperature centrifugal pump seal cooling device.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] An adjustable high-temperature centrifugal pump mechanical seal cooling device comprises a pump body, a drive motor and a cooling chamber, wherein the cooling chamber is located between the pump body and the drive motor, a rotating blade is rotatably installed inside the pump body, a rotating shaft is fixedly installed on the side wall of the rotating blade, the rotating shaft and the output shaft of the drive motor are fixedly connected through a coupling, a mechanical seal chamber is fixedly installed on the side wall of the pump body, a sealing assembly is movably installed inside the mechanical seal chamber, and the sealing assembly comprises a static ring, a dynamic ring, a push ring and a spring seat, an end cover is fixedly installed on the side wall of the mechanical seal chamber, the static ring is fixedly installed on the side wall of the end cover, the dynamic ring is slidably sleeved on the outside of the rotating shaft, the push ring is movably sleeved on the inside of the dynamic ring, the spring seat is fixedly installed on the side wall of the mechanical seal chamber, and a spring is provided between the spring seat and the push ring;

[0006] A cooling assembly is movably installed on the outside of the sealing assembly, and the cooling assembly includes a rotating cylinder, a slip ring 1 and a push plate. The slip ring 1 is movably sleeved on the outside of the moving ring, and the rotating cylinder is rotatably installed on the outside of the slip ring 1. The side wall of the push plate is integrally formed with a slip ring 2, and the slip ring 2 is rotatably installed inside the rotating cylinder.

[0007] In the above-mentioned adjustable high-temperature centrifugal pump seal cooling device, the side wall of the dynamic ring is integrally formed with a sliding rod 1, the side wall of the rotating cylinder is provided with a sliding hole 2, the sliding rod 1 is slidably installed inside the sliding hole 2, the interior of the dynamic ring is integrally formed with a plurality of evenly distributed blades 1, the outer peripheral wall of the dynamic ring is provided with a bidirectional sliding groove 1, the inner peripheral wall of the sliding ring 1 is integrally formed with a sliding ball 1, and the sliding ball 1 is slidably installed inside the bidirectional sliding groove 1.

[0008] In the above-mentioned adjustable high-temperature centrifugal pump seal cooling device, the side wall of the spring seat is integrally formed with a sliding rod 2, the push plate is slidably inserted into the outside of the sliding rod 2, the inner peripheral wall of the rotating cylinder is provided with a two-way sliding groove 2, the outer peripheral wall of the slip ring 2 is integrally formed with a sliding ball 2, and the sliding ball 2 is slidably installed inside the two-way sliding groove 2.

[0009] In the above-mentioned adjustable high-temperature centrifugal pump seal cooling device, a sliding hole 1 is opened on the side wall of the sliding rod 2, and a sliding rod 4 is integrally formed on the side wall of the slip ring 1. The sliding rod 4 passes through the side wall of the push plate and is slidably installed inside the sliding hole 1.

[0010] In the above-mentioned adjustable high-temperature centrifugal pump seal cooling device, a movable groove is provided inside the push ring, a clip is slidably installed inside the movable groove, springs 2 and 3 are respectively provided between the top and side walls of the clip and the movable groove, and a plurality of one-way teeth are provided on the outer peripheral wall of the rotating shaft, and the clip and the one-way teeth are meshed with each other.

[0011] In the above-mentioned adjustable high-temperature centrifugal pump mechanical seal cooling device, a side cover is slidably installed between the mechanical seal chamber and the rotating blades, and a plug is integrally formed on the side wall of the side cover. A number of evenly distributed drainage holes are opened on the side wall of the mechanical seal chamber close to the rotating blades, and the plug is slidably inserted into the inside of the drainage hole. A spring four is provided between the side cover and the mechanical seal chamber.

[0012] In the above-mentioned adjustable high-temperature centrifugal pump mechanical seal cooling device, a sealing ring 2 is fixedly sleeved on the outer side of the static ring, and the sealing ring 2 is located between the static ring and the end cover. A sealing ring 1 is provided between the push ring and the dynamic ring, and the sealing ring 1 is fixedly sleeved on the outer side of the rotating shaft. An infusion hole is opened on the top of the mechanical seal chamber, and the infusion hole is located above the dynamic ring and the static ring.

[0013] In the above-mentioned adjustable high-temperature centrifugal pump seal cooling device, a branch pipe is fixedly installed at the output end of the pump body, and connecting pipe 1 and connecting pipe 2 are fixedly installed at the top and bottom of the cooling chamber respectively. Connecting pipe 1 is fixedly installed on the side wall of the branch pipe, and connecting pipe 2 is fixedly connected to the infusion hole. A cooler is fixedly installed inside the cooling chamber.

[0014] Compared with the existing technology, the beneficial effects of the present invention are:

[0015] Through the rotating cylinder set inside the machine seal chamber, when the dynamic ring rotates with the rotating shaft, the dynamic ring drives the rotating cylinder to rotate, and the rotating cylinder drives the blade 1 to rotate, so that the flow rate of the cooling medium inside the mechanical seal chamber is accelerated, and the cooling effect inside the machine seal chamber is improved. During the rotation of the rotating cylinder, the slip ring 1 drives the rotating cylinder to move back and forth horizontally, so that when the rotating cylinder moves toward the dynamic ring, the rotating cylinder pulls the ring toward the drainage hole due to the resistance of the cooling medium, so that a slight gap is formed between the dynamic ring and the static ring. At this time, the cooling medium flows into the gap between the dynamic ring and the static ring to form a water gap. The film improves the lubrication between the dynamic ring and the static ring, cleans the particles generated by the friction between the dynamic ring and the static ring, reduces the wear between the dynamic ring and the static ring, and increases the service life of the sealing component. The rotation of the rotating cylinder drives the push plate to make reciprocating lateral movement, so that the push plate shakes the cooling medium inside the mechanical seal chamber to avoid the precipitation of particles inside the cooling medium. When the rotating cylinder makes reciprocating lateral movement, the rotating cylinder drives the push plate to move, so that the shaking range of the push plate is increased, which further avoids the precipitation of particles inside the cooling medium and can clean the particles settled inside the sealing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0018] Figure 3 For the present invention Figure 2 A magnified schematic diagram of point A in the middle;

[0019] Figure 4 For the present invention Figure 2 A magnified schematic diagram of point B in the middle;

[0020] Figure 5 For the present invention Figure 3 The enlarged schematic diagram of point C in the middle;

[0021] Figure 6 This is a disassembly diagram of the sealing assembly of the present invention;

[0022] Figure 7 Schematic diagram of the structure of the push ring in the present invention;

[0023] Figure 8 This is a disassembled schematic diagram of the rotating cylinder and the slip ring 1 in the present invention;

[0024] Figure 9 It is a structural schematic diagram of the push plate in the present invention;

[0025] Figure 10 It is a schematic structural diagram of the side cover in the present invention.

[0026] In the figure: 1. Pump body; 11. Drive motor; 111. Coupling; 112. Rotating shaft; 113. Rotating blade; 114. One-way tooth; 12. Cooling chamber; 121. Branch pipe; 122. Connecting pipe 1; 123. Connecting pipe 2; 124. Cooler; 13. Mechanical seal chamber; 131. End cover; 132. Infusion port; 133. Drain port; 21. Moving ring; 211. Sealing ring 1; 212. Sliding rod 1; 213. Bidirectional slide 1; 22. Stationary ring; 221. Sealing ring 2; 222. Spring 1; 223. Slide rod 2; 224. Spring seat; 225. Slide hole 1; 23. Push ring; 231. Movable groove; 232. Buckle; 233. Spring 2; 234. Spring 3; 31. Rotating cylinder; 311. Bidirectional slide groove 2; 312. Blade 1; 313. Slide ring 1; 314. Slide rod 4; 315. Slide ball 1; 316. Slide hole 2; 32. Push plate; 321. Slide ring 2; 322. Slide ball 2; 33. Side cover; 331. Plug; 332. Spring 4. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0029] Reference Figure 1 - Figure 10 As shown, an adjustable high-temperature centrifugal pump mechanical seal cooling device includes a pump body 1, a drive motor 11 and a cooling chamber 12, the cooling chamber 12 is located between the pump body 1 and the drive motor 11, a rotating blade 113 is rotatably installed inside the pump body 1, and a rotating shaft 112 is fixedly installed on the side wall of the rotating blade 113, the rotating shaft 112 and the output shaft of the drive motor 11 are fixedly connected through a coupling 111, a mechanical seal chamber 13 is fixedly installed on the side wall of the pump body 1, and a sealing assembly is movably installed inside the mechanical seal chamber 13, the sealing assembly includes a static ring 22, a dynamic ring 21, a push ring 23 and a spring seat 224, an end cover 131 is fixedly installed on the side wall of the mechanical seal chamber 13, the static ring 22 is fixedly installed on the side wall of the end cover 131, the dynamic ring 21 is slidably sleeved on the outside of the rotating shaft 112, the push ring 23 is movably sleeved on the inside of the dynamic ring 21, the spring seat 224 is fixedly installed on the side wall of the mechanical seal chamber 13, and a spring 222 is provided between the spring seat 224 and the push ring 23;

[0030] A cooling assembly is movably installed on the outside of the sealing assembly, and the cooling assembly includes a rotating cylinder 31, a slip ring 1 313 and a push plate 32. The slip ring 1 313 is movably mounted on the outside of the moving ring 21, and the rotating cylinder 31 is rotatably installed on the outside of the slip ring 1 313. The side wall of the push plate 32 is integrally formed with a slip ring 2 321, and the slip ring 2 321 is rotatably installed inside the rotating cylinder 31.

[0031] like Figure 3 、 Figure 6 and Figure 8 As shown, the side wall of the dynamic ring 21 is integrally formed with a slide rod 212, the side wall of the rotating cylinder 31 is provided with a slide hole 216, the slide rod 212 is slidably installed inside the slide hole 216, the interior of the dynamic ring 21 is integrally formed with a plurality of evenly distributed blades 312, the outer peripheral wall of the dynamic ring 21 is provided with a two-way slide groove 213, the inner peripheral wall of the slide ring 313 is integrally formed with a slide ball 315, and the slide ball 315 is slidably installed inside the two-way slide groove 213.

[0032] Among them, the working principle of the rotating cylinder 31 is: when the rotating shaft 112 drives the dynamic ring 21 to rotate, the cooling chamber 12 starts and transports the cooled medium to the inside of the mechanical seal chamber 13, and the dynamic ring 21 drives the rotating cylinder 31 to rotate. The rotating rotating cylinder 31 increases the flow rate of the cooling medium through the blade 1 312, thereby accelerating the cooling of the sealing component.

[0033] like Figure 4 、 Figure 6 、 Figure 8 and Figure 9 As shown, the side wall of the spring seat 224 is integrally formed with a slide rod 223, and the push plate 32 is slidably inserted into the outer side of the slide rod 223. The inner peripheral wall of the rotating cylinder 31 is provided with a two-way slide groove 2 311, and the outer peripheral wall of the slip ring 2 321 is integrally formed with a slide ball 2 322. The slide ball 2 322 is slidably installed inside the two-way slide groove 2 311. The side wall of the slide rod 223 is provided with a slide hole 1 225. The side wall of the slip ring 1 313 is integrally formed with a slide rod 4 314. The slide rod 4 314 passes through the side wall of the push plate 32 and is slidably installed inside the slide hole 1 225.

[0034] The working principle of the slip ring 313 is as follows: during the rotation of the rotating cylinder 31, the dynamic ring 21 rotates inside the slip ring 313, and the sliding ball 315 slides inside the bidirectional sliding groove 213, so that the slip ring 313 drives the rotating cylinder 31 to make reciprocating lateral movements.

[0035] Further references Figure 4 、 Figure 6 and Figure 9 To explain, the working principle of the push plate 32 is as follows: during the rotation of the rotating cylinder 31, the rotating cylinder 31 rotates on the outside of the slip ring 2 321, and the sliding ball 2 322 slides inside the two-way slide groove 2 311, so that the push plate 32 makes reciprocating lateral movements. Through the reciprocating movement of the push plate 32, the cooling medium inside the mechanical seal chamber 13 can be effectively shaken to avoid the precipitation of particles inside the cooling medium and damage to the sealing component.

[0036] like Figure 5-Figure 8 As shown, a movable groove 231 is provided inside the push ring 23, and a buckle 232 is slidably installed inside the movable groove 231. A spring 233 and a spring 3 234 are respectively provided between the top and side wall of the buckle 232 and the movable groove 231. A plurality of one-way teeth 114 are provided on the outer peripheral wall of the rotating shaft 112, and the buckle 232 and the one-way teeth 114 are engaged with each other. A plurality of evenly distributed drainage holes 133 are provided on the side wall of the mechanical seal chamber 13 close to the rotating blade 113.

[0037] When the rotating cylinder 31 moves toward the dynamic ring 21, the cooling medium flows toward the drainage hole 133, so that the cooling medium pushes the rotating cylinder 31 in the direction away from the dynamic ring 21. At this time, the buckle 232 abuts against the one-way tooth 114, the buckle 232 is locked, and the rotating cylinder 31 pulls the ring 21 in the direction of the drainage hole 133. The dynamic ring 21 drives the push ring 23 to move, and the push ring 23 squeezes the spring 3 234, so that a slight gap is formed between the dynamic ring 21 and the static ring 22, reducing friction. At this time, the cooling medium flows into the gap between the dynamic ring 21 and the static ring 22. A water film is formed in the gap between the moving ring 21 and the static ring 22 to lubricate the moving ring 21 and the static ring 22, and at the same time clean the particles generated by the friction between the moving ring 21 and the static ring 22, thereby reducing the wear between the moving ring 21 and the static ring 22 and improving the service life of the moving ring 21 and the static ring 22. As the sealing assembly runs for a long time, when the push ring 23 pushes the moving ring 21 and the static ring 22 to conflict with each other, the push ring 23 drives the buckle 232 to move, so that the buckle 232 adjusts the size of the gap formed by the rotating cylinder 31 in time according to the one-way tooth 114.

[0038] like Figure 4 and Figure 10 As shown, a side cover 33 is slidably installed between the mechanical seal chamber 13 and the rotating blade 113. The side wall of the side cover 33 is integrally formed with a plug 331. The plug 331 is slidably inserted into the inside of the drainage hole 133. A spring 332 is provided between the side cover 33 and the mechanical seal chamber 13.

[0039] Among them, when the pump body 1 is started, the cooling chamber 12 is started and the cooled medium is transported to the interior of the mechanical seal chamber 13. At this time, the rotating cylinder 31 transports the cooling medium to the drainage hole 133 through the blade 1 312. At the same time, the push ring 23 pushes the cooling medium toward the drainage hole 133, so that the cooling medium contacts and pushes the plug 331, and opens the side cover 33, and the cooling medium flows into the pump body 1, which can effectively improve the efficiency of water injection when the pump body 1 is started.

[0040] like Figure 2 、 Figure 3 and Figure 6 As shown, a sealing ring 221 is fixedly sleeved on the outer side of the static ring 22, and the sealing ring 221 is located between the static ring 22 and the end cover 131. A sealing ring 1 211 is provided between the push ring 23 and the dynamic ring 21, and the sealing ring 1 211 is fixedly sleeved on the outer side of the rotating shaft 112. An infusion hole 132 is opened on the top of the mechanical seal chamber 13, and the infusion hole 132 is located above the dynamic ring 21 and the static ring 22.

[0041] When a slight gap is formed between the dynamic ring 21 and the static ring 22 , the cooling medium can flow directly into the gap through the infusion hole 132 .

[0042] like Figure 1 and Figure 2As shown, a branch pipe 121 is fixedly installed at the output end of the pump body 1, and a connecting pipe 122 and a connecting pipe 2 123 are fixedly installed at the top and bottom of the cooling chamber 12 respectively. The connecting pipe 122 is fixedly installed on the side wall of the branch pipe 121, and the connecting pipe 2 123 is fixedly connected to the infusion hole 132. A cooler 124 is fixedly installed inside the cooling chamber 12.

[0043] When the pump body 1 transports high-temperature medium, the cooling chamber 12 extracts part of the high-temperature medium for cooling, and the cooled medium enters the mechanical seal chamber 13 to cool the sealing component inside.

[0044] The specific working principle and method of use of the present invention are explained in detail below: the drive motor 11 is started, the pump body 1 is started, the cooling chamber 12 transports the cooling medium to the interior of the mechanical seal chamber 13, the rotating shaft 112 drives the dynamic ring 21 to rotate, the rotating cylinder 31 drives the blade 1312 to follow the dynamic ring 21 to rotate, and the rotating cylinder 31 drives the push plate 32 to slide back and forth. At this time, through the rotation of the blade 1312 and the sliding of the push plate 32, the cooling medium moves to the drain hole 133, and opens the plug 331, so that the cooling medium flows into the interior of the pump body 1, thereby improving the water injection efficiency of the pump body 1. During the rotation of the rotating cylinder 31, the rotation of the blade 1312 can effectively increase the flow rate of the cooling medium inside the mechanical seal chamber 13, thereby improving the cooling effect. The slip ring 1313 drives the rotating cylinder 31 to move back and forth horizontally. When the rotating cylinder 31 moves toward the dynamic ring 2 When the rotating cylinder 31 moves, the rotating cylinder 31 pulls the ring 21 toward the drain hole 133 due to the resistance of the cooling medium, so that a slight gap is formed between the dynamic ring 21 and the static ring 22. At this time, the cooling medium flows into the dynamic ring 21 and the static ring 22 to form a water film, thereby improving the lubrication between the dynamic ring 21 and the static ring 22, and cleaning the particles generated by the friction between the dynamic ring 21 and the static ring 22, reducing the wear between the dynamic ring 21 and the static ring 22, and improving the service life of the sealing assembly. During the reciprocating horizontal movement of the push plate 32, the push plate 32 shakes the cooling medium inside the mechanical seal chamber 13 to prevent the particles inside the cooling medium from settling. When the rotating cylinder 31 moves back and forth horizontally, the rotating cylinder 31 drives the push plate 32 to move, thereby increasing the shaking range of the push plate 32, further preventing the particles inside the cooling medium from settling, and at the same time, cleaning the particles settled inside the sealing assembly.

[0045] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are common means well known to those skilled in the art.

[0046] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An adjustable high-temperature centrifugal pump seal cooling device, comprising a pump body (1), a drive motor (11) and a cooling chamber (12), characterized in that: The cooling chamber (12) is located between the pump body (1) and the drive motor (11). A rotating blade (113) is rotatably mounted inside the pump body (1). A rotating shaft (112) is fixedly mounted on the side wall of the rotating blade (113). The rotating shaft (112) and the output shaft of the drive motor (11) are fixedly connected via a coupling (111). A mechanical seal chamber (13) is fixedly mounted on the side wall of the pump body (1). A sealing assembly is movably mounted inside the mechanical seal chamber (13). The sealing assembly includes a static ring (22 ), a dynamic ring (21), a push ring (23) and a spring seat (224), the side wall of the mechanical seal chamber (13) is fixedly mounted with an end cover (131), the static ring (22) is fixedly mounted on the side wall of the end cover (131), the dynamic ring (21) is slidably mounted on the outside of the rotating shaft (112), the push ring (23) is movably mounted on the inside of the dynamic ring (21), the spring seat (224) is fixedly mounted on the side wall of the mechanical seal chamber (13), and a spring (222) is provided between the spring seat (224) and the push ring (23); A cooling assembly is movably mounted on the outer side of the sealing assembly, and the cooling assembly includes a rotating cylinder (31), a slip ring 1 (313) and a push plate (32). The slip ring 1 (313) is movably sleeved on the outer side of the moving ring (21). The rotating cylinder (31) is rotatably mounted on the outer side of the slip ring 1 (313). The side wall of the push plate (32) is integrally formed with a slip ring 2 (321), and the slip ring 2 (321) is rotatably mounted inside the rotating cylinder (31). The side wall of the spring seat (224) is integrally formed with a second slide bar (223), the push plate (32) is slidably inserted into the outer side of the second slide bar (223), the inner peripheral wall of the rotating cylinder (31) is provided with a second bidirectional slide groove (311), the outer peripheral wall of the second slip ring (321) is integrally formed with a second slide ball (322), and the second slide ball (322) is slidably installed inside the second bidirectional slide groove (311); The side wall of the slide rod 2 (223) is provided with a slide hole 1 (225), and the side wall of the slide ring 1 (313) is integrally formed with a slide rod 4 (314), and the slide rod 4 (314) passes through the side wall of the push plate (32) and is slidably installed inside the slide hole 1 (225); The side wall of the movable ring (21) is integrally formed with a slide rod (212), the side wall of the rotating cylinder (31) is provided with a slide hole (316), the slide rod (212) is slidably installed inside the slide hole (316), the interior of the movable ring (21) is integrally formed with a plurality of evenly distributed blades (312), the outer peripheral wall of the movable ring (21) is provided with a bidirectional slide groove (213), the inner peripheral wall of the slide ring (313) is integrally formed with a slide ball (315), the slide ball (315) is slidably installed inside the bidirectional slide groove (213).

2. The adjustable high-temperature centrifugal pump seal cooling device according to claim 1, characterized in that: A movable groove (231) is provided inside the push ring (23), a buckle (232) is slidably installed inside the movable groove (231), a spring 2 (233) and a spring 3 (234) are provided between the top and side walls of the buckle (232) and the movable groove (231), respectively, and a plurality of one-way teeth (114) are provided on the outer peripheral wall of the rotating shaft (112), and the buckle (232) and the one-way teeth (114) are meshed with each other.

3. The adjustable high-temperature centrifugal pump seal cooling device according to claim 1, characterized in that: A side cover (33) is slidably mounted between the mechanical seal chamber (13) and the rotating blade (113); a plug (331) is integrally formed on the side wall of the side cover (33); a plurality of evenly distributed drainage holes (133) are provided on the side wall of the mechanical seal chamber (13) close to the rotating blade (113); the plug (331) is slidably plugged into the interior of the drainage holes (133); and a spring (332) is provided between the side cover (33) and the mechanical seal chamber (13).

4. The adjustable high-temperature centrifugal pump seal cooling device according to claim 1, characterized in that: A second sealing ring (221) is fixedly sleeved on the outer side of the static ring (22), and the second sealing ring (221) is located between the static ring (22) and the end cover (131). A first sealing ring (211) is provided between the push ring (23) and the dynamic ring (21), and the first sealing ring (211) is fixedly sleeved on the outer side of the rotating shaft (112). An infusion hole (132) is opened on the top of the mechanical sealing chamber (13), and the infusion hole (132) is located above the dynamic ring (21) and the static ring (22).

5. The adjustable high-temperature centrifugal pump seal cooling device according to claim 4, characterized in that: A branch pipe (121) is fixedly mounted on the output end of the pump body (1), and a connecting pipe 1 (122) and a connecting pipe 2 (123) are fixedly mounted on the top and bottom of the cooling chamber (12), respectively. The connecting pipe 1 (122) is fixedly mounted on the side wall of the branch pipe (121), and the connecting pipe 2 (123) is fixedly connected to the infusion hole (132). A cooler (124) is fixedly mounted inside the cooling chamber (12).

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