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CN-121993418-A - Multi-station adaptive fluorine material axial flow pump

CN121993418ACN 121993418 ACN121993418 ACN 121993418ACN-121993418-A

Abstract

The invention relates to the technical field of axial flow pumps, and discloses a multi-station adaptive type fluorine material axial flow pump which comprises a guide vane body and a horn tube, wherein the guide vane body and the horn tube are mutually fixed, an upper fluorine material sleeve body is arranged on the inner wall of the guide vane body, a lower fluorine material sleeve body is arranged on the inner wall of the horn tube, a fluorine material jacket is clamped at the joint of the guide vane body and the horn tube, the upper fluorine material sleeve body and the lower fluorine material sleeve body are in sealing joint with the fluorine material jacket, a movable sealing sleeve member is arranged at the part of a main shaft between a shaft sleeve and an impeller and used for limiting the clearance between the impeller and a sealing main shaft and the shaft sleeve and the impeller. The detachable fluorine material shell structure of the upper fluorine material sleeve body, the lower fluorine material sleeve body and the fluorine material jacket can be adapted to various corrosive media such as strong acid, strong alkali, organic solvents and the like, so that the multi-working condition requirements of the industries such as chemical industry, metallurgy, environmental protection and the like are met, and the movable sealing sleeve member is mechanically locked and fixed, so that the connection strength is high, and the gap generation caused by high-speed medium flushing is effectively prevented.

Inventors

  • BIAN XIANG
  • CHAO YU
  • CHAO GUOPING

Assignees

  • 江苏新世界泵业有限公司

Dates

Publication Date
20260508
Application Date
20260409

Claims (8)

  1. 1. The multi-working condition adaptive type fluorine axial flow pump is characterized by comprising a guide vane body (2) and a horn tube (3) which are fixed with each other, wherein an inlet (4) is formed in the bottom of the horn tube (3), the top circumference of the guide vane body (2) is provided with an opening, a shaft sleeve (5) is fixed in the guide vane body (2), a main shaft (6) is rotationally connected in the shaft sleeve (5), an impeller (9) is arranged at the bottom of the main shaft (6) extending out of the shaft sleeve (5), a motor (1) for driving the main shaft (6) to rotate is arranged at the top of the shaft sleeve (5), an upper fluorine sleeve body (7) is arranged on the inner wall of the guide vane body (2), a lower fluorine sleeve body (8) is arranged on the inner wall of the horn tube (3), a fluorine jacket (14) is clamped at the joint of the guide vane body (2) and the horn tube (3), and the upper fluorine sleeve body (7) and the lower fluorine sleeve body (8) are in sealing joint with the fluorine jacket (14); The part of the main shaft (6) between the shaft sleeve (5) and the impeller (9) is provided with a movable sealing sleeve, which is used for limiting the impeller (9) and sealing the gap between the main shaft and the shaft sleeve (5) and the impeller (9); The bottom surface of the upper fluorine material sleeve body (7) is inwards sunken to form a first clamping groove (12), a first extending clamping protrusion (13) is formed between the bottom of the first clamping groove (12) and the inner wall surface of the upper fluorine material sleeve body (7), an upper clamping protrusion (15) is upwards protruded from the top surface of the fluorine material sleeve (14), the upper clamping protrusion (15) is clamped with the first clamping groove (12), an upper clamping groove (16) is formed between the upper clamping protrusion (15) and the inner wall surface of the fluorine material sleeve body (14), and the first extending clamping protrusion (13) is clamped in the upper clamping groove (16); the first sealing surface (11) inclined upwards is formed between the first extending clamping convex (13) and the inner wall surface of the upper fluorine material sleeve body (7), the upper clamping groove (16) extends towards the inner wall surface of the fluorine material sleeve (14) to form a first sealing edge ring (17) protruding upwards, and the first sealing edge ring (17) is buckled on the first sealing surface (11).
  2. 2. The multi-working condition adaptive type fluorine material axial flow pump according to claim 1, wherein a lower clamping groove (23) is formed in the inner concave mode of the top surface of the lower fluorine material sleeve body (8), a lower clamping protrusion (22) is formed on the outer side of the lower clamping groove (23), a second clamping groove (19) is formed in the downward concave mode of the bottom surface of the fluorine material sleeve (14), the lower clamping protrusion (22) can be clamped in the second clamping groove (19), a second extending clamping protrusion (20) is formed between the second clamping groove (19) and the inner wall surface of the fluorine material sleeve (14), and the second extending clamping protrusion (20) can be clamped in the lower clamping groove (23).
  3. 3. The multi-working condition adaptive type fluorine material axial flow pump according to claim 2, wherein the lower clamping groove (23) extends to the top of the inner wall surface of the fluorine material jacket body (8) to form a second sealing edge ring (21) protruding upwards, the second extending clamping protrusion (20) extends upwards along the direction of the inner wall surface of the fluorine material jacket (14) to form a second sealing surface (18), and the second sealing edge ring (21) is buckled on the second sealing surface (18).
  4. 4. The multi-working condition adaptive fluorine axial flow pump according to claim 1 is characterized in that a clamping ring (25) is fixedly clamped at the bottom of the shaft sleeve (5); The movable sealing sleeve comprises an upper sealing sleeve ring (26) and a lower sealing sleeve ring (31) which are mutually abutted tightly, a positioning ring (34) which is rotationally connected with an impeller (9) is arranged at the bottom of the lower sealing sleeve ring (31), the inner side of the upper sealing sleeve ring (26) is connected with the inner side of the lower sealing sleeve ring (31) through an elastic piece (30), an extending edge sleeve (27) is integrally formed in the upper portion of the upper sealing sleeve ring (26) in an upward extending mode, and the extending edge sleeve (27) is abutted to the clamping ring (25).
  5. 5. The multi-condition adaptive fluoride axial-flow pump of claim 4, wherein the bottom surface of the upper seal ring (26) is formed with an outer stepped portion (29) located at the outer edge and an inner stepped portion (28) located at the inner edge in a stepped manner, the top surface of the lower seal ring (31) is formed with an inner annular sealing surface (32) located at the inner edge and an outer annular sealing surface (33) located at the outer edge in a stepped manner, and when the upper seal ring (26) and the lower seal ring (31) are in butt joint, the inner annular sealing surface (32) can abut against the inner stepped portion (28), and the outer annular sealing surface (33) can abut against the outer stepped portion (29).
  6. 6. The multi-condition adaptive fluorine axial flow pump of claim 5, wherein a sealing ring (35) is arranged on the abutting surface of the inner step part (28) and the inner annular sealing surface (32).
  7. 7. The multi-working-condition adaptive type fluorine axial flow pump according to claim 1, wherein inner blades (10) are circumferentially and spirally arranged on the inner wall of the lower fluorine sleeve body (8), and guide grooves (24) are circumferentially and spirally arranged on the inner wall of the upper fluorine sleeve body (7).
  8. 8. The multi-condition adaptive fluoride axial-flow pump of claim 7, wherein the inner blade (10) comprises a blade root (101) fixed with the inner wall of the lower fluoride sleeve body (8) and a blade edge (102) positioned at the outer end part of the blade root (101), the blade edge (102) is twisted in the direction from the blade root (101) to form a twisted surface (105), a blade bottom edge (103) and a blade top edge (104) are respectively formed at the bottom and the top of the inner blade (10), and the inner blade (10) is gradually widened along the blade bottom edge (103) to the blade top edge (104) and is provided with a wide edge part (106) at the blade edge (102).

Description

Multi-station adaptive fluorine material axial flow pump Technical Field The invention relates to the technical field of axial flow pumps, in particular to a multi-station adaptive type fluorine axial flow pump. Background The axial flow pump is used as core equipment for conveying high-flow and low-lift fluid, is widely applied to the fields of chemical industry, metallurgy, environmental protection and the like, and particularly in the conveying scene of strong corrosive media (such as strong acid, strong alkali and organic solvent), and the corrosion resistance, suitability and operation stability of the axial flow pump directly determine the production continuity. The production conditions in the industries of chemical industry, pharmacy and the like often change along with process adjustment, the corrosiveness, the temperature and the solid content of different media (such as concentrated sulfuric acid, hydrochloric acid and strong alkali solution) are obviously different, and the material of the overflow part of the axial flow pump is required to have specific corrosion resistance. The excessive flow component of traditional fluorine material axial-flow pump is mostly integrated into one piece structure, and the material is fixed (like single PTFE or PVDF), when the operating mode changes, needs whole change pump body or core part, and not only change cycle length, and equipment acquisition cost is high, seriously influences production efficiency. In addition, some traditional pump bodies adopt steel lining fluorine integral structure, and lining fluorine layer and metal matrix combine closely, in case lining fluorine layer wearing and tearing or corrosion failure, need whole scrapped pump body, have further increased the fortune dimension cost. In addition, the guide shell of the axial flow pump is formed by splicing the guide vane body and the horn pipe, in the traditional design, a simple flange seal or a single sealing gasket seal is often adopted at the splicing position, and the problems that firstly, the sealing surfaces are in plane contact, a medium is easy to stay at a gap when flowing through, a strong corrosive medium stays for a long time to cause corrosion of the sealing surfaces and ageing failure of the sealing gasket, so that the medium leakage is caused, the environment is polluted, a metal matrix of the pump body is corroded, the service life of equipment is shortened, secondly, the sealing surfaces are continuously flushed by the medium flowing at a high speed, the connection strength of the traditional sealing structure is insufficient, separation of the sealing surfaces and gaps are easy to occur, and the corrosive medium is led to permeate into the pump body to damage key parts such as a shafting. Meanwhile, when the axial flow pump operates, the impeller is influenced by the thrust of the medium in the high-speed rotation process, and axial floating and running are easy to occur. The traditional axial flow pump mostly adopts a fixed sealing structure (such as a single mechanical seal) and cannot compensate the axial displacement of an impeller, wherein on one hand, the impeller can lead to the poor fitting of sealing surfaces and the occurrence of gaps, a strong corrosive medium permeates into a shafting along the gaps to corrode metal parts such as a main shaft, a bearing and the like to cause sealing failure, and on the other hand, the direct contact of the impeller and the shaft sleeve can lead to abrasion, aggravate sealing damage and lead to the increase of the unplanned shutdown rate of equipment. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a multi-station adaptive fluorine material axial flow pump, which solves the problems that the existing axial flow pump is easy to wear or corrode and lose effectiveness due to the fluorine lining layer, and metal parts such as a main shaft, a bearing and the like are corroded due to gaps when an impeller axially displaces. The multi-working condition adaptive type fluorine material axial flow pump comprises a guide vane body and a horn tube which are mutually fixed, wherein an inlet is formed in the bottom of the horn tube, the top of the guide vane body is circumferentially provided with an opening, a shaft sleeve is fixed in the guide vane body, a main shaft is rotationally connected in the shaft sleeve, an impeller is arranged at the bottom of the main shaft extending out of the shaft sleeve, and a motor for driving the main shaft to rotate is arranged at the top of the shaft sleeve; The part of the main shaft between the shaft sleeve and the impeller is provided with a movable sealing sleeve for limiting the impeller and sealing the gap between the main shaft and the shaft sleeve and the impeller. Preferably, the bottom surface of the upper fluorine material sleeve body is concavely provided with a first clamping groove, a first extending clamping protrusion is formed between the bottom o