CN213298306U

CN213298306U - Evaporation circulating pump structure

Info

Publication number: CN213298306U
Application number: CN202021437545.6U
Authority: CN
Inventors: 何光国
Original assignee: Jiangsu Jinlin Chemical Machinery Co ltd
Current assignee: Jiangsu Jinlin Chemical Machinery Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-05-28
Anticipated expiration: 2030-07-21

Abstract

The utility model discloses an evaporation circulating pump structure, which is characterized in that both ends of a bearing seat are provided with a bearing box and a bearing gland, and a bearing is arranged in the bearing box; wherein, an oil filling pipe which radially penetrates through the bearing seat and is communicated with the outside is arranged on the bearing box close to one end of the pump body; a shaft sleeve is arranged on the pump shaft in the pump body, and a sealing device is arranged outside the shaft sleeve; an output bent pipe is arranged on the pump body, a connecting pipe is arranged between the output bent pipe and the pump shell, and the diameter of the connecting pipe is equal to that of the output bent pipe; an impeller connected with the pump shaft is arranged in the pump shell, and an impeller cap is arranged at the end part of the impeller; the tail end of the pump shell is provided with a horn-shaped suction chamber. The water-cooled sealing device has the advantages of simple structure, high reliability of the whole machine, high strength of the pump shaft and large bearing capacity, and can timely carry out water cooling on the sealing device, prolong the service life of the shaft seal, ensure long-term stable operation of a single pump, reduce the maintenance frequency of the pump and save the cost.

Description

Evaporation circulating pump structure

Technical Field

The utility model relates to a field of pump especially relates to an evaporation circulating pump structure.

Background

The circulating evaporation pump can be widely used for the technological processes of evaporation, crystallization, chemical reaction and the like in the industries of chemical industry, nonferrous metallurgy, salt making, light industry and the like; the circulating evaporation pump in the prior art has high failure rate in the use process, and needs to be stopped for maintenance frequently, so that the working efficiency of the circulating evaporation pump is greatly reduced; when the medium is output, liquid can gush into the bearing, damage is caused to the bearing, the service life of the bearing is shortened, and the stable operation of the pump is influenced; therefore, a new structure of the evaporation circulation pump needs to be designed.

Disclosure of Invention

The utility model aims at providing an evaporation circulating pump structure, structural stability is good, excellent in use effect, and long service life has solved above technical problem.

In order to realize the technical purpose, reach foretell technical requirement, the utility model discloses the technical scheme who adopts is: an evaporation circulating pump structure comprises a support for mounting a motor, wherein a pump shaft penetrates from one end of the support and is connected with a motor shaft through a coupler; one end of the bearing seat is connected with the support, and the other end of the bearing seat is connected with the pump body; the method is characterized in that: the two ends of the bearing seat are provided with a bearing box and a bearing gland, and the bearing is arranged in the bearing box; wherein, an oil filling pipe which radially penetrates through the bearing seat and is communicated with the outside is arranged on the bearing box close to one end of the pump body; a shaft sleeve is arranged on the pump shaft in the pump body, and a sealing device is arranged outside the shaft sleeve; an output bent pipe is arranged on the pump body, a connecting pipe is arranged between the output bent pipe and the pump shell, and the diameter of the connecting pipe is equal to that of the output bent pipe; an impeller connected with the pump shaft is arranged in the pump shell, and an impeller cap is arranged at the end part of the impeller; the tail end of the pump shell is provided with a horn-shaped suction chamber.

Preferably: the sealing device comprises a packing box with an opening at one end, packing is arranged in the packing box, a blank cap is arranged at the opening end of the packing box, and the other end of the packing box is connected and fixed with a supporting seat of the pump body.

Preferably: the impeller comprises a pipe sleeve matched with the end part of the pump shaft, an olive-shaped connecting sleeve is arranged outside the pipe sleeve, and a connecting rib plate is arranged between the pipe sleeve and the connecting sleeve; one end of the connecting sleeve is matched and connected with and fixed with a convex block on the pump shaft through a clamping groove, and the other end of the connecting sleeve is clamped with the impeller cap.

Preferably: and a bottom plate is arranged at one end of the pump body close to the connecting pipe, and a reinforcing rib plate is arranged between the bottom plate and the end cover of the pump body.

Preferably: and the stuffing box is provided with a cooling water connecting pipe, and the cooling water connecting pipe is introduced into the stuffing box.

The utility model has the advantages that; an evaporation circulation pump structure, compare with traditional structure: an oil filling pipe which radially penetrates through the bearing seat and is communicated with the outside is arranged on the bearing box close to one end of the pump body; lubricating oil is conveniently and accurately injected into the bearing, and leakage of the lubricating oil is effectively avoided; a shaft sleeve is arranged on the pump shaft inside the pump body, and a sealing device is arranged outside the shaft sleeve; impurity particles are effectively prevented from entering the shaft sleeve, and media are effectively prevented from entering the bearing; the pump body is provided with the output bent pipe, so that the cavitation resistance is improved; the diameter of the connecting pipe between the output elbow and the pump shell is equal to that of the output elbow; ensuring the medium to be stably output; the utility model has the advantages of simple structure, the complete machine reliability is high, and pump shaft strength is high, and bearing capacity is big, can in time carry out the water-cooling to sealing device, has prolonged the life of bearing seal, ensures the long-term steady operation of single pump, has reduced the maintenance frequency of pump, has practiced thrift the cost.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the sealing device of the present invention;

FIG. 3 is a schematic view of the impeller structure of the present invention;

in the figure: 1. a support; 2. a pump shaft; 3. a coupling; 4. a bearing seat; 5. a bearing cartridge; 6. a bearing gland; 7. a bearing; 8. a pump body; 81. a supporting seat; 9. an oil filling pipe; 10. a shaft sleeve; 11. an output elbow; 12. a pump housing; 13. taking over a pipe; 14. an impeller; 141. pipe sleeve; 142. connecting sleeves; 143. connecting a rib plate; 144. a card slot; 145. a bump; 15. an impeller cap; 16. a suction chamber; 17. a sealing device; 171. a stuffing box; 172. a filler; 173. covering the blank with a cover; 174. a cooling water connection pipe; 18. a base plate; 19. and a reinforcing plate.

Detailed Description

In order to make the object, technical solution and beneficial technical effects of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments;

in the drawings: an evaporation circulating pump structure comprises a support 1 for mounting a motor, wherein a pump shaft 2 penetrates from one end of the support 1 and is connected with a motor shaft through a coupling 3; one end of the bearing block 4 is connected with the support 1, and the other end is connected with the pump body 5; the bearing is characterized in that both ends of the bearing seat 4 are provided with a bearing box 5 and a bearing gland 6, and a bearing 7 is arranged in the bearing box 5; wherein, an oil filling pipe 9 which radially passes through the bearing seat 4 and is communicated with the outside is arranged on the bearing box 5 which is close to one end of the pump body 8; lubricating oil is conveniently and accurately injected into the bearing, and leakage of the lubricating oil is effectively avoided; a shaft sleeve 10 is arranged on the pump shaft 2 in the pump body 8, and a sealing device 17 is arranged outside the shaft sleeve 10; impurity particles are effectively prevented from entering the shaft sleeve, so that the normal operation of the pump shaft is influenced; the pump body 8 is provided with the output elbow 11, so that the cavitation erosion resistance is improved; a connecting pipe 13 is arranged between the output elbow pipe 11 and the pump shell 12, and the diameter of the connecting pipe 13 is equal to that of the output elbow pipe 11; ensuring the medium to be stably output; an impeller 14 connected with the pump shaft 2 is arranged in the pump shell 12, and an impeller cover cap 15 is arranged at the end part of the impeller 14; the connection between the impeller and the pump shaft is more reliable, and the stability is better; the tail end of the pump shell 12 is provided with a horn-shaped suction chamber 16, so that the suction flow of the pump is increased, and the working efficiency of the pump is improved.

The sealing device 17 comprises a stuffing box 171 with an opening at one end, stuffing 172 is arranged in the stuffing box 171, a blank cap 173 is arranged at the opening end of the stuffing box 171, and the other end of the stuffing box 171 is fixedly connected with a supporting seat 81 of the pump body 8; the sealing device 17 is in clearance fit with the shaft sleeve 10, and the sealing device 17 is tightly connected with the supporting seat through bolts; the end of the blank cap with the lug boss is pressed into the stuffing box and is tightly matched with the stuffing box, so that the sealing effect is better.

The impeller 14 comprises a pipe sleeve 141 matched with the end part of the pump shaft 2, an olive-shaped connecting sleeve 142 is arranged outside the pipe sleeve 141, and a connecting rib plate 143 is arranged between the pipe sleeve 141 and the connecting sleeve 142; one end of the connecting sleeve 142 is matched, connected and fixed with a projection 145 on the pump shaft through a clamping groove 144, and the other end of the connecting sleeve 142 is clamped with the impeller cap 15; the olive-shaped connecting sleeve and the impeller cover cap form sealing connection, so that foreign particles are effectively prevented from entering between the impeller and the pump shaft, the anti-blocking effect is good, and the use stability of the pump is improved.

A bottom plate 18 is arranged at one end, close to the connecting pipe 13, of the pump body 8, and a reinforcing rib plate 19 is arranged between the bottom plate 18 and an end cover of the pump body 8, so that the structural stability of the pump is better.

The stuffing box 171 is provided with a cooling water connection pipe 174, and the cooling water connection pipe 174 is led into the stuffing box 171. The stuffing box and the stuffing are relatively static, the shaft sleeve rotates along with the pump shaft, so that friction is generated between the shaft sleeve and the stuffing to cause higher temperature, and in order to prolong the service life of the shaft sleeve and the pump shaft, a method of introducing cooling water into the stuffing box is adopted; the cooling effect is better, and simple structure is reasonable, has prolonged the life of axle sleeve and pump shaft, ensures the pump shaft steady operation.

The utility model discloses a concrete implementation: the utility model is suitable for a low liquid level evaporator, has good cavitation resistance, and can greatly reduce the investment of evaporation plants; the evaporator is also suitable for a reverse circulation evaporator and a double-heating-chamber series evaporator which are provided with a heating chamber with large fluid resistance at the inlet side of the pump; the pump of the utility model has stable operation, light abrasion of the overflowing part and long service life; the crystal breakage degree is low, and the method is suitable for an evaporative crystallization process; the weight is light, the appearance size is small, and the maintenance is quick and convenient; the sealing device adopts liquid-resistant type packing for sealing, and the packing is sealed for 3-6 months.

The utility model has the advantages of simple structure, the complete machine reliability is high, and pump shaft strength is high, and bearing capacity is big, can in time carry out the water-cooling to sealing device, has prolonged the life of bearing seal, ensures the long-term steady operation of single pump, has reduced the maintenance frequency of pump, has practiced thrift the cost.

The foregoing examples are given for the purpose of illustrating the present invention in a clear and non-restrictive manner, and it will be apparent to those skilled in the art that variations and modifications of the present invention may be made in other variations and modifications based on the foregoing description, and it is not necessary or necessary to exhaustively enumerate all embodiments, and all such variations and modifications as are obvious and desirable in the art are within the scope of the present invention.

Claims

1. An evaporation circulating pump structure comprises a support (1) for mounting a motor, wherein a pump shaft (2) penetrates from one end of the support (1) and is connected with a motor shaft through a coupling (3); one end of the bearing seat (4) is connected with the support (1), and the other end is connected with the pump body (8); the method is characterized in that: both ends of the bearing seat (4) are provided with a bearing box (5) and a bearing gland (6), and the bearing (7) is arranged in the bearing box (5); wherein an oil filling pipe (9) which radially penetrates through the bearing seat (4) and is communicated with the outside is arranged on the bearing box (5) close to one end of the pump body (8); a shaft sleeve (10) is arranged on the pump shaft (2) in the pump body (8), and a sealing device (17) is arranged outside the shaft sleeve (10); an output bent pipe (11) is arranged on the pump body (8), a connecting pipe (13) is arranged between the output bent pipe (11) and the pump shell (12), and the diameter of the connecting pipe (13) is equal to that of the output bent pipe (11); an impeller (14) connected with the pump shaft (2) is arranged in the pump shell (12), and an impeller cover cap (15) is arranged at the end part of the impeller (14); the tail end of the pump shell (12) is provided with a horn-shaped suction chamber (16).

2. An evaporation circulation pump structure according to claim 1, wherein: the sealing device (17) comprises a stuffing box (171) with an opening at one end, stuffing (172) is arranged in the stuffing box (171), a blank cap (173) is arranged at the opening end of the stuffing box (171), and the other end of the stuffing box (171) is fixedly connected with a supporting seat (81) of the pump body (8).

3. An evaporation circulation pump structure according to claim 1, wherein: the impeller (14) comprises a pipe sleeve (141) matched with the end part of the pump shaft (2), an olive-shaped connecting sleeve (142) is arranged outside the pipe sleeve (141), and a connecting rib plate (143) is arranged between the pipe sleeve (141) and the connecting sleeve (142); one end of the connecting sleeve (142) is matched, connected and fixed with a convex block (145) on the pump shaft through a clamping groove (144), and the other end of the connecting sleeve (142) is clamped with the impeller cover cap (15).

4. An evaporation circulation pump structure according to claim 1, wherein: one end of the pump body (8) close to the connecting pipe (13) is provided with a bottom plate (18), and a reinforcing rib plate (19) is arranged between the bottom plate (18) and an end cover of the pump body (8).

5. An evaporation circulation pump structure according to claim 2, wherein: the stuffing box (171) is provided with a cooling water connecting pipe (174), and the cooling water connecting pipe (174) is introduced into the stuffing box (171).