CN209818307U - Single-stage single-suction cantilever type chemical centrifugal pump - Google Patents
Single-stage single-suction cantilever type chemical centrifugal pump Download PDFInfo
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- CN209818307U CN209818307U CN201920143709.5U CN201920143709U CN209818307U CN 209818307 U CN209818307 U CN 209818307U CN 201920143709 U CN201920143709 U CN 201920143709U CN 209818307 U CN209818307 U CN 209818307U
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Abstract
A single-stage single-suction cantilever type chemical centrifugal pump comprises a pump body, a pump cover, a bearing box and a pump shaft; the pump shaft is arranged on the pump body through the bearing box and the pump cover and is fixed with the rear bearing gland through the sealing gland and the front bearing gland, and framework oil seals are arranged among the sealing gland, the front bearing gland, the rear bearing gland and the pump shaft; a movable ring seat is fixed between the pump shaft and the pump cover; the movable ring seat is matched with the mechanical seal; the method is characterized in that: the impeller is fixed on the pump shaft through an integrally formed impeller nut, and a spray welding layer is arranged on the surface of the impeller; a gas pressurization module is arranged on the left side of the pump body; a cooling liquid inlet and a cooling liquid outlet which are vertically and symmetrically arranged at the upper side and the lower side of the pump shaft are arranged between the sealing gland and the pump cover; effectively help the pump shaft cooling, ensured the operational environment of pump shaft to reduce the corruption, the wearing and tearing to the impeller, prolonged the working life of chemical centrifugal pump.
Description
Technical Field
The utility model belongs to the centrifugal pump field, in particular to cantilever type chemical centrifugal pump is inhaled to single-stage list.
Background
The pump is controlled by the prime mover to drive the medium to move, and is an energy conversion device for converting the energy output by the prime mover into medium pressure energy, and is mainly used for conveying liquid including water, oil, acid-base liquid, emulsion, suspoemulsion, liquid metal and the like, and also can convey liquid, gas mixture and liquid containing suspended solids. At present, corrosion-resistant pumps used in high-end application fields of petroleum, chemical industry, alkali making, thermal power, smelting, rare earth, pesticides, dyes and the like in the petrochemical industry in China are the most key and most core power source devices in the whole process. The single-stage single-suction cantilever centrifugal pump widely used in the existing industrial production has the defects that the impeller of the water pump is easy to accumulate dust and suffers from cavitation abrasion, and the service life of the water pump is directly influenced. Secondly, the cooling liquid is volatile, the cooling capacity is reduced after long-time use, a large amount of rust can be generated on metal parts which are corroded for a long time, and serious metal parts can gradually corrode and penetrate through a metal plate to cause leakage, so that the cooling system needs to be cleaned in time and the cooling liquid needs to be replaced. Therefore, it is necessary to design a centrifugal pump which has an impeller capable of resisting abrasion, reducing cavitation and cleaning, is quick and clean, has no residue inside and has a long service life.
Disclosure of Invention
The utility model aims to solve foretell technical problem, provide a single-stage single suction cantilever type chemical centrifugal pump.
In order to realize the technical purpose, reach foretell technical requirement, the utility model discloses the technical scheme who adopts is: a single-stage single-suction cantilever type chemical centrifugal pump comprises a pump body, a pump cover, a bearing box and a pump shaft; the pump shaft is arranged on the pump body through the bearing box and the pump cover and is fixed with the rear bearing gland through the sealing gland and the front bearing gland, and framework oil seals are arranged among the sealing gland, the front bearing gland, the rear bearing gland and the pump shaft; a movable ring seat matched with the mechanical seal is fixed between the pump shaft and the pump cover; the method is characterized in that: the pump shaft is provided with an impeller fixed by an integrally formed impeller nut, and the surface of the impeller is provided with a spray welding layer; a gas pressurization module is arranged on the left side of the pump body; and a cooling liquid inlet and a cooling liquid outlet which are vertically and symmetrically arranged at the upper side and the lower side of the pump shaft are arranged between the sealing gland and the pump cover.
The spray welding layer is formed by fusing on the surface of the impeller.
The gas pressurizing module is arranged on the pump body after being stopped, and the impeller is washed after air is pressurized.
The utility model has the advantages that: the utility model provides a cantilever type chemical centrifugal pump is inhaled to single-stage list, compares with traditional structure: the impeller which is integrally formed with the impeller nut has the advantages that the self-fluxing alloy powder is sprayed and fused on the surface of the impeller through the heat source to form a spray welding layer, and then the spray welding layer is directly fixed on the pump shaft, so that the cavitation resistance is good, and the service life is greatly prolonged; the residual grinding materials in the pump generate high-pressure gas to rush out of the pump body through the arranged gas pressurization module; the corroded iron rust is rapidly taken away when the cooling system is cleaned by the vertically and symmetrically arranged cooling liquid outlets and inlets, and the cooling liquid is discharged, so that the purity of the cooling liquid is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
1. a pump body; 1-1, a gas pressurization module; 2. a pump cover; 3. a bearing housing; 4. a pump shaft; 5. a sealing gland; 6. a front bearing gland; 7. a rear bearing gland; 8. framework oil seal; 9. an impeller nut; 10. an impeller; 10-1, spraying a welding layer; 11. a movable ring seat; 12. mechanical sealing; 13. a coolant inlet; 14. and a cooling liquid outlet.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings;
in the drawings: a single-stage single-suction cantilever type chemical centrifugal pump comprises a pump body 1, a pump cover 2, a bearing box 3 and a pump shaft 4; the pump shaft 4 is arranged on the pump body 1 through the bearing box 3 and the pump cover 2 and is fixed with the rear bearing gland 7 through the sealing gland 5 and the front bearing gland 6, and framework oil seals 8 are arranged between the sealing gland 5, the front bearing gland 6, the rear bearing gland 7 and the pump shaft 4; a movable ring seat 11 matched with a mechanical seal 12 is fixed between the pump shaft 4 and the pump cover 2; the method is characterized in that: the impeller 10 is fixed on the pump shaft 4 through an integrally formed impeller nut 9, and a spray welding layer 10-1 is arranged on the surface of the impeller 10; a gas pressurizing module 1-1 is arranged on the left side of the pump body 1; and a cooling liquid inlet 13 and a cooling liquid outlet 14 which are vertically and symmetrically arranged at the upper side and the lower side of the pump shaft 4 are arranged between the sealing gland 5 and the pump cover 2.
The spray welding layer 10-1 is formed by melting on the surface of the impeller 10.
The gas pressurizing module 1-1 is arranged on the pump body 1 after being shut down, and the impeller 10 is flushed after pressurizing air.
In the specific implementation:
the pump shaft 4 is arranged on the pump body 1 through the bearing box 3 and the pump cover 2 and is fixed with the rear bearing gland 7 through the sealing gland 5 and the front bearing gland 6, framework oil seals 8 are arranged among the sealing gland 5, the front bearing gland 6, the rear bearing gland 7 and the pump shaft 4 to help sealing, and the movable ring seat 11 is matched with the mechanical seal 12 to seal; the impeller 10 and the impeller nut 9 at the front end of the pump shaft 4 are extremely easy to corrode, so that the service life of the pump is short, after the impeller 10 which is integrally formed with the impeller nut 9 is adopted, the self-fluxing alloy powder is sprayed and fused on the surface of the impeller through a heat source to form a spray welding layer, the spray welding layer can be directly installed on the pump shaft, the connecting structure is reduced, the cavitation resistance is enhanced, and the service life is effectively prolonged; after the impeller 10 is used for a long time, abrasive materials are easily attached to the working environment to aggravate abrasion, so that when the pump body 1 stops working, the gas pressurization module 1-1 is arranged on the left side to pressurize air and discharge the abrasive materials; since the vertically symmetrical coolant inlet 13 and coolant outlet 14 are provided between the seal cover 5 and the pump cover 2, the corrosive rust can be quickly removed when the cooling system is cleaned, and the coolant can be completely discharged without remaining, thereby ensuring excellent cooling performance.
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 (3)
1. A single-stage single-suction cantilever type chemical centrifugal pump comprises a pump body (1), a pump cover (2), a bearing box (3) and a pump shaft (4); the pump shaft (4) is arranged on the pump body (1) through the bearing box (3) and the pump cover (2) and is fixed with the rear bearing gland (7) through the sealing gland (5) and the front bearing gland (6), and framework oil seals (8) are arranged between the sealing gland (5), the front bearing gland (6) and the rear bearing gland (7) and the pump shaft (4); a movable ring seat (11) matched with the mechanical seal (12) is fixed between the pump shaft (4) and the pump cover (2); the method is characterized in that: an impeller (10) fixed through an integrally formed impeller nut (9) is arranged on the pump shaft (4), and a spray welding layer (10-1) is arranged on the surface of the impeller (10); a gas pressurization module (1-1) is arranged on the left side of the pump body (1); and a cooling liquid inlet (13) and a cooling liquid outlet (14) which are vertically and symmetrically arranged at the upper side and the lower side of the pump shaft (4) are arranged between the sealing gland (5) and the pump cover (2).
2. The single-stage single-suction cantilever type chemical centrifugal pump of claim 1, wherein: the spray welding layer (10-1) is fused on the surface of the impeller (10) to form.
3. The single-stage single-suction cantilever type chemical centrifugal pump of claim 1, wherein: the gas pressurizing module (1-1) is arranged on the pump body (1) after being shut down, and the impeller (10) is flushed after pressurizing air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920143709.5U CN209818307U (en) | 2019-01-28 | 2019-01-28 | Single-stage single-suction cantilever type chemical centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920143709.5U CN209818307U (en) | 2019-01-28 | 2019-01-28 | Single-stage single-suction cantilever type chemical centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209818307U true CN209818307U (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920143709.5U Active CN209818307U (en) | 2019-01-28 | 2019-01-28 | Single-stage single-suction cantilever type chemical centrifugal pump |
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| CN (1) | CN209818307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927783A (en) * | 2020-08-17 | 2020-11-13 | 杨煜海 | Full-jacketed single-stage cantilever pump |
-
2019
- 2019-01-28 CN CN201920143709.5U patent/CN209818307U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927783A (en) * | 2020-08-17 | 2020-11-13 | 杨煜海 | Full-jacketed single-stage cantilever pump |
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