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CN-224228868-U - Vertical centrifugal pump

CN224228868UCN 224228868 UCN224228868 UCN 224228868UCN-224228868-U

Abstract

The utility model discloses a vertical centrifugal pump, and relates to the technical field of centrifugal pumps. A vertical centrifugal pump comprises a motor support, a bearing oil chamber, a mechanical seal oil chamber, a first pump shell, a second pump shell and a base, wherein the second pump shell, the first pump shell, the mechanical seal oil chamber, the bearing oil chamber and the motor support are sequentially arranged above the base on the basis of the base, and a first seal, a second seal and a third seal are respectively arranged at the joint of the motor support and the bearing oil chamber, the joint of the bearing oil chamber and the mechanical seal oil chamber and the interior of the first pump shell. The utility model can be used as a power mechanism of a high-speed vortex pulping machine and can also be used for independently conveying media such as powder slurry of clear water, sewage, cement, fly ash and the like, aggregate slurry of fine sand, soil blocks and the like through the arrangement of three sealing elements and the like. The device has the characteristic of large conveying flow, adopts an upper inlet and lower outlet structure, can not store materials, can be completely emptied, and does not need to worry about sedimentation and blockage when conveying easily-coagulated materials.

Inventors

  • XU HAIKUN
  • WANG YANFENG
  • ZHANG YACHAO
  • YAO KAI
  • HE LIANG

Assignees

  • 天津赛智灌浆设备有限公司

Dates

Publication Date
20260512
Application Date
20250509

Claims (6)

  1. 1. A vertical centrifugal pump, comprising; The motor bracket (1), the bearing oil chamber (6), the mechanical seal oil chamber (9), the pump shell I (15), the pump shell II (16) and the base (18), wherein the pump shell II (16), the pump shell I (15), the mechanical seal oil chamber (9), the bearing oil chamber (6) and the motor bracket (1) are sequentially arranged above the base (18) on the basis of the base (18); A first sealing element, a second sealing element and a third sealing element are respectively arranged at the joint of the motor bracket (1) and the bearing oil chamber (6), the joint of the bearing oil chamber (6) and the mechanical sealing oil chamber (9) and the interior of the pump shell I (15); A pump shaft (2) is arranged in the centrifugal pump, an impeller (17) is fixed at one end of the pump shaft (2), the impeller (17) rotates in a pump shell II (16), and a sealing part I, a sealing part II and a sealing part III are connected with the pump shaft (2).
  2. 2. The vertical centrifugal pump of claim 1, wherein the first sealing member comprises a skeleton oil seal (3) and a bearing (4), the motor support (1) and the bearing oil chamber (6) are connected through a bearing seat (5), the bearing (4) is arranged at the bearing seat (5), the skeleton oil seal (3) is arranged at one side of the bearing seat (5) facing the motor support (1) and is attached to the surface of the pump shaft (2), and the skeleton oil seal (3) is used for isolating the interior of the motor support (1) and the interior of the bearing oil chamber (6).
  3. 3. The vertical centrifugal pump according to claim 1, wherein the second sealing member comprises a second bearing (7) and a first mechanical seal (8), wherein the first mechanical seal oil chamber (9) is connected with the first bearing oil chamber (6) and the first pump shell (15) through flange connection, the second bearing (7) is arranged on one side of the first mechanical seal oil chamber (9) facing the first bearing oil chamber (6), and the first mechanical seal (8) is arranged on one side of the first mechanical seal oil chamber (9) facing the first pump shell (15).
  4. 4. The vertical centrifugal pump of claim 1, wherein a mechanical seal gland (11) and a shaft sleeve (13) are arranged in the first pump shell (15), the mechanical seal gland (11) is fixed on one side of the mechanical seal oil chamber (9) facing the first pump shell (15) and sleeved on the surface of the pump shaft (2), a framework oil seal two (12) is arranged between the mechanical seal gland (11) and the shaft sleeve (13), and the framework oil seal two (12) is sleeved on the surface of the pump shaft (2).
  5. 5. A vertical centrifugal pump according to claim 1, wherein a pump inlet (19) is formed in one side of the first pump casing (15), a pump outlet (20) is formed in one side of the second pump casing (16), and liquid enters the first pump casing (15) from the pump inlet (19) and is discharged from the pump outlet (20) through the second pump casing (16).
  6. 6. The vertical centrifugal pump of claim 1, wherein the mechanical seal gland (11) is provided with a mechanical seal II (10), one end of the shaft sleeve (13) far away from the mechanical seal gland (11) is provided with a framework oil seal III (14), and the mechanical seal II (10) and the framework oil seal III (14) are both sleeved on the surface of the pump shaft (2).

Description

Vertical centrifugal pump Technical Field The utility model relates to the technical field of centrifugal pumps, in particular to a vertical centrifugal pump. Background A centrifugal pump is a mechanical device that uses centrifugal force to transport a liquid. The main working parts are one or more impellers, when the impellers rotate, liquid is sucked in from the center of the impellers, energy is obtained under the action of impeller blades, and the liquid is thrown towards the edges of the impellers, so that centrifugal force is generated. This force increases the pressure and velocity of the liquid, which then flows into a diffuser pipe or vane within the pump housing, converting some of the velocity energy into pressure energy, which is ultimately delivered to the desired location. The existing centrifugal pump structure is a lower-inlet upper-outlet structure and is usually a monopole mechanical seal, the lower-inlet upper-outlet structure cannot be completely emptied, certain materials are stored in the volute, only a small amount of materials which are difficult to precipitate and condense are applicable, the service life of the monopole mechanical seal is relatively short, and the monopole mechanical seal needs to be stopped and replaced immediately after liquid leakage is sealed, so that the novel solution is provided by the utility model aiming at the conditions. Disclosure of utility model The present utility model is directed to a vertical centrifugal pump, which solves the above-mentioned problems. In order to achieve the above purpose, the utility model provides a vertical centrifugal pump, comprising; The motor support, the bearing oil chamber, the mechanical seal oil chamber, the first pump shell, the second pump shell and the base are sequentially arranged above the base on the basis of the base; The joint of the motor bracket and the bearing oil chamber, the joint of the bearing oil chamber and the mechanical seal oil chamber and the interior of the pump shell I are respectively provided with a first seal, a second seal and a third seal; A pump shaft is arranged in the centrifugal pump, an impeller is fixed at one end of the pump shaft, the impeller rotates in the second pump shell, and the first sealing part, the second sealing part and the third sealing part are all connected with the pump shaft. With respect to the scheme, the first sealing piece comprises a first framework oil seal and a first bearing, the motor support and the bearing oil chamber are connected through a bearing seat, the first bearing is arranged at the bearing seat, the first framework oil seal is arranged on one side, facing the motor support, of the bearing seat and is attached to the surface of the pump shaft, and the first framework oil seal is used for isolating the motor support and the inside of the bearing oil chamber. In this way, the sealing member comprises a second bearing and a first mechanical seal, wherein the mechanical seal oil chamber is connected with the first bearing oil chamber and the first pump shell through flange connection, the second bearing is arranged on one side of the mechanical seal oil chamber facing the bearing oil chamber, and the first mechanical seal is arranged on one side of the mechanical seal oil chamber facing the first pump shell. In this way, the mechanical seal gland and the shaft sleeve are arranged in the first pump shell, the mechanical seal gland is fixed on one side of the mechanical seal oil chamber facing the first pump shell and sleeved on the surface of the pump shaft, and the framework oil seal II is arranged between the mechanical seal gland and the shaft sleeve and sleeved on the surface of the pump shaft. In this solution, a pump inlet is provided on one side of the pump casing, and a pump outlet is provided on one side of the pump casing, so that the liquid enters the first pump casing from the pump inlet and is discharged from the pump outlet through the second pump casing. With respect to the scheme, a mechanical seal II is arranged in the middle of the mechanical seal gland, a framework oil seal III is arranged at one end, far away from the mechanical seal gland, of the shaft sleeve, and the mechanical seal II and the framework oil seal III are both sleeved on the surface of the pump shaft. Compared with the prior art, the utility model has the beneficial effects that: The vertical centrifugal pump can be used as a power mechanism of a high-speed vortex pulping machine and can also be used for independently conveying media such as powder slurry of clear water, sewage, cement, fly ash and the like, aggregate slurry of fine sand, soil blocks and the like through the arrangement of three sealing elements and the like. The device has the characteristic of large conveying flow, adopts an upper inlet and lower outlet structure, can not store materials, can be completely emptied, and does not need to worry about sedimentation and blockage when conveying easil