CN219242271U

CN219242271U - Molten salt pump

Info

Publication number: CN219242271U
Application number: CN202320256308.7U
Authority: CN
Inventors: 邱斌; 刘海明; 李新华; 李方超; 李凯; 李高杰
Original assignee: Zhejiang Zhonghang Engineering Technology Co ltd
Current assignee: Zhejiang Zhonghang Engineering Technology Co ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-06-23
Anticipated expiration: 2033-02-20

Abstract

The utility model provides a molten salt pump which comprises a motor, a shaft coupling, a pump shaft, a bearing, an impeller, a bearing box and a shell, wherein the output end of the motor is fixedly connected with the shaft coupling, the other end of the shaft coupling is provided with the pump shaft, the impeller is fixedly arranged at the bottom of the pump shaft, the bearing is sleeved on the outer surface of the pump shaft, the bearing box is arranged outside the bearing and fixedly connected with the bearing box, the shell is sleeved outside the shaft coupling, part of the pump shaft and the impeller, the shell is fixedly connected with the bearing box, a cooling cavity is formed inside the bearing box, the bearing box is provided with a water cooling inlet, a water cooling outlet, an air cooling inlet and an air cooling outlet, and the water cooling inlet, the water cooling outlet, the air cooling inlet and the air cooling outlet are all communicated with the cooling cavity. According to the utility model, the bearing box is arranged outside the bearing, and the cooling cavity is arranged in the bearing box, so that the cooling cavity can contain cooling liquid for circulation to cool the bearing in a water-cooling manner, or the water-cooling circulation channel is closed to enable cold air to pass through the cooling cavity to cool the bearing in an air-cooling manner.

Description

Molten salt pump

Technical Field

The utility model relates to a pump, in particular to a molten salt pump, and belongs to the technical field of industrial high-temperature fluid transportation.

Background

Molten salt is an indispensable raw material in industrial production, can be directly added into molten metal melt or react with molten metal to generate various products, is widely used in metal smelting, aluminum industry, magnesium processing, continuous casting and rolling of steel and the like, can be used as an important solvent and additive for producing detergents, paint and the like, and is also used as an important chemical raw material for manufacturing calcium sulfate, ammonium chloride, chemical fertilizers, synthetic ammonia, urea and the like. The molten salt pump is a pump specially used for conveying high-temperature molten salt, and is an indispensable device in high-temperature molten salt transportation.

The Chinese patent publication No. CN106640732A discloses a molten salt pump, which comprises a motor and a rotating shaft connected with the motor, wherein the bottom of the rotating shaft is provided with an impeller, the molten salt pump also comprises a shell for accommodating the rotating shaft and the impeller, the rotating shaft is positioned at the upper part of the impeller and is fixedly provided with an upper orifice ring, the upper orifice ring is used for separating and communicating the inner space of the shell where the impeller is positioned and the rest inner spaces of the shell, and the bottom surface of the upper orifice ring is fixedly connected with a lower orifice ring with the cross section area smaller than that of the upper orifice ring. The rotor of the molten salt pump is provided with a rotating shaft and an impeller, the rotating shaft and the impeller rotate together along with the rotating shaft through an upper orifice ring and a lower orifice ring, and the upper surface of the upper orifice ring generates lower pressure which is smaller than the lower surface of the lower orifice ring to generate upper thrust due to different cross sections, so that the residual force after the upper thrust is counteracted by the lower pressure can be used for balancing the gravity of the rotor. By adopting the structural design, the gravity of the rotor can be conveniently balanced on the basis of excessively changing the structure of the prior molten salt pump, the working efficiency of the molten salt pump is improved, and the energy consumption of the molten salt pump can be reduced. When the utility model works, the bearing is damaged to a certain extent due to the overhigh temperature of the molten salt, so that the fault rate and the maintenance cost are increased, and the service life of the utility model is shortened.

Disclosure of Invention

Based on the background, the utility model aims to provide a molten salt pump which can cool a bearing and is not limited by regions, and the problems in the background technology are solved.

In order to achieve the above object, the present utility model provides the following technical solutions:

the utility model provides a fused salt pump, includes motor, shaft coupling, pump shaft, bearing, impeller, bearing box and casing, the motor output and shaft coupling fixed connection, the shaft coupling other end is provided with the pump shaft, the pump shaft bottom is fixed with the impeller, the bearing has been cup jointed on pump shaft external surface, the bearing outside is provided with the bearing box, bearing and bearing box fixed connection, shaft coupling, partial pump shaft and the outside cover of impeller are equipped with the casing, casing and bearing box fixed connection, the cooling chamber has been seted up to the bearing box inside, the bearing box is provided with water-cooling entry, water-cooling export, air-cooling entry and air-cooling export, water-cooling entry, air-cooling entry and air-cooling export all are linked together with the cooling chamber, this fused salt pump still includes radiator and air-blower, the radiator is provided with heat dissipation entry and heat dissipation export, the heat dissipation export is linked together through the pipeline with the water-cooling entry, the heat dissipation entry is fixed with the circulating pump, the air-blower is provided with the air-blower export, the air-blower export is linked together through the pipeline with the air-cooling entry.

The molten salt pump is provided with a cooling cavity for providing a cooling place for the bearing, a water cooling inlet and a water cooling outlet are arranged for enabling cooling liquid to enter and leave the cooling cavity to provide a channel, an air cooling inlet and an air cooling outlet are arranged for enabling cooling air to enter and leave the cooling cavity to provide a channel, a radiator is arranged for circulating cooling liquid to dissipate heat, the heat dissipation inlet and the heat dissipation outlet are respectively communicated with the water cooling outlet and the water cooling inlet through pipelines to provide a circulating channel for the cooling liquid, a circulating pump is arranged for providing power for cooling liquid circulation, and an air blower outlet is communicated with the air cooling inlet through the pipelines to continuously provide cold air for the inside of the cooling cavity.

Preferably, the molten salt pump further comprises a molten salt inlet and a molten salt outlet. The provision of a molten salt inlet and a molten salt outlet provides a passage for transporting high temperature molten salt in the utility model.

Preferably, the bearing is a rolling bearing. The friction factor of the rolling bearing is small, and the starting resistance is small.

Preferably, the bearing housing is provided with a coolant drain. The provision of a coolant drain provides a passageway for coolant to leave the utility model.

Preferably, the water cooling inlet is provided with a first switch valve. The first switch valve is arranged to close or regulate the flow rate of the cooling liquid entering the bearing box.

Preferably, the water-cooled outlet is provided with a second switching valve. The second switch valve is arranged to close or adjust the flow rate of the cooling liquid which leaves the bearing box and enters the radiator.

Preferably, the air cooling inlet is provided with a third switch valve. The third switch valve is arranged to close or regulate the flow rate of cooling air entering the bearing box.

Preferably, the air cooling outlet is provided with a cover body, and the cover body is hinged with the air cooling outlet. The cover body is arranged and hinged with the air cooling outlet to provide a leaving channel for cooling air or a channel for cooling liquid to enter the cooling cavity.

Preferably, the air cooling inlet is provided with a filter screen. The filter screen is arranged to prevent the cooling air from entraining impurities into the cooling cavity.

Preferably, the cover body is provided with a sealing element, the sealing element is detachably and fixedly connected with the cover body, and the sealing element is movably matched with the air cooling outlet. The sealing piece is arranged to prevent a gap from appearing between the cover body and the cold air outlet, so that the cooling liquid overflows, and the sealing piece and the cover body are arranged to be detachably and fixedly connected so as to facilitate replacement of the sealing piece.

Compared with the prior art, the utility model has the following advantages:

according to the molten salt pump, the bearing box is arranged outside the bearing, the cooling cavity is formed in the bearing box, and cooling liquid can be contained in the cooling cavity to cool the bearing in a water-cooling mode, or the water-cooling circulation channel is closed to enable cold air to pass through the cooling cavity to cool the bearing in an air-cooling mode.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a molten salt pump of the present utility model;

FIG. 2 is a schematic diagram of the connection structure of the bearing housing of the molten salt pump of the present utility model with the radiator and blower.

In the figure: 1. a motor; 2. a coupling; 3. a pump shaft; 4. a bearing; 5. an impeller; 6. a bearing housing; 7. a housing; 8. a cooling chamber; 9. a water-cooling inlet; 10. a water-cooling outlet; 11. an air cooling inlet; 12. an air-cooled outlet; 13. a heat sink; 14. a blower; 15. a heat dissipation inlet; 16. a heat dissipation outlet; 17. a circulation pump; 18. a blower outlet; 19. a molten salt inlet; 20. a molten salt outlet; 21. a coolant drain port; 22. a first switching valve; 23. a second switching valve; 24. a third switching valve; 25. a cover body; 26. a filter screen; 27. and a seal.

Detailed Description

The technical scheme of the utility model is further specifically described below through specific embodiments and with reference to the accompanying drawings. It should be understood that the practice of the utility model is not limited to the following examples, but is intended to be within the scope of the utility model in any form and/or modification thereof.

In the present utility model, unless otherwise specified, all parts and percentages are by weight, and the equipment, materials, etc. used are commercially available or are conventional in the art. The methods in the following examples are conventional in the art unless otherwise specified. The components and devices in the following examples are, unless otherwise indicated, all those components and devices known to those skilled in the art, and their structures and principles are known to those skilled in the art from technical manuals or by routine experimentation.

In the following detailed description of embodiments of the utility model, reference is made to the accompanying drawings, in which, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the utility model. However, one or more embodiments may be practiced by one of ordinary skill in the art without these specific details.

As shown in FIG. 1, the molten salt pump is a vertical pump, which comprises a motor 1, a coupler 2, a pump shaft 3, a bearing 4, an impeller 5, a bearing box 6 and a shell 7, wherein the output end of the motor 1 is fixedly connected with the coupler 2, the other end of the coupler 2 is provided with the pump shaft 3, the impeller 5 is fixed at the bottom of the pump shaft 3, the bearing 4 is sleeved on the outer surface of the pump shaft 3, the bearing 4 is a rolling bearing 4, the friction factor of the rolling bearing 4 is small, the starting resistance is small, the bearing box 6 is arranged outside the bearing 4, the bearing 4 is fixedly connected with the bearing box 6, the shell 7 is sleeved outside the coupler 2, part of the pump shaft 3 and the impeller 5, and the shell 7 is fixedly connected with the bearing box 6.

The bearing box 6 is internally provided with a cooling cavity 8, the cooling cavity 8 is arranged to provide a cooling place for the bearing 4, the bearing box 6 is provided with a water cooling inlet 9, a water cooling outlet 10, an air cooling inlet 11 and an air cooling outlet 12, the water cooling inlet 9, the water cooling outlet 10, the air cooling inlet 11 and the air cooling outlet 12 are all communicated with the cooling cavity 8, the water cooling inlet 9 and the water cooling outlet 10 are arranged to provide channels for cooling liquid to enter and leave the cooling cavity 8, the air cooling inlet 11 and the air cooling outlet 12 are arranged to provide channels for cooling air to enter and leave, and the molten salt pump further comprises a radiator 13 and a blower 14.

The radiator 13 is provided with a radiating inlet 15 and a radiating outlet 16, the radiating inlet 15 is communicated with the water cooling outlet 10 through a pipeline, the radiating outlet 16 is communicated with the water cooling inlet 9 through a pipeline, the radiator 13 is arranged to radiate heat for circulating cooling liquid, the radiating inlet 15 and the radiating outlet 16 are respectively communicated with the water cooling outlet 10 and the water cooling inlet 9 through pipelines to provide a circulating channel for cooling liquid, the water cooling inlet 9 is provided with a first switch valve 22, the first switch valve 22 is arranged to close or regulate the flow rate of the cooling liquid entering the bearing box 6, the water cooling outlet 10 is provided with a second switch valve 23, the second switch valve 23 is arranged to close or regulate the flow rate of the cooling liquid leaving the bearing box 6 and entering the radiator 13, the radiating inlet 15 is fixedly provided with a circulating pump 17, the circulating pump 17 is arranged to provide power for cooling liquid circulation, the bearing box 6 is provided with a cooling liquid outlet 21, and the cooling liquid outlet 21 is arranged to provide a channel for cooling liquid leaving the utility model.

The air blower 14 is provided with an air blower outlet 18, the air blower outlet 18 is communicated with the air cooling inlet 11 through a pipeline and can continuously provide cold air for the interior of the cooling cavity 8, the air cooling inlet 11 is provided with a third switch valve 24, the third switch valve 24 is arranged and can close or regulate the flow rate of cooling air entering the bearing box 6, the air cooling inlet 11 is provided with a filter screen 26, the filter screen 26 is arranged and prevents impurities carried by the cooling air from entering the cooling cavity 8, the air cooling outlet 12 is provided with a cover body 25, the cover body 25 is hinged with the air cooling outlet 12, the cover body 25 is provided with a cover body 25 and is hinged with the air cooling outlet 12 to provide a leaving channel for the cooling air or a channel for cooling liquid to enter the cooling cavity 8, the cover body 25 is provided with a sealing element 27, the sealing element 27 is detachably and fixedly connected with the cover body 25, the sealing element 27 is movably matched with the air cooling outlet 12, a gap is arranged between the cover body 25 and the cold air outlet, so that the cooling liquid overflows, the molten salt can be conveniently replaced by the sealing element 27, the molten salt pump further comprises a molten salt inlet 19 and an outlet 20, and a molten salt outlet 20, and the molten salt outlet 20 can provide a high-temperature transport channel for the molten salt.

The medium molten salt is in a high temperature state during transportation, but the bearing 4 is easy to burn out under a high temperature environment for a long time, so that the risk of faults exists, and the utility model can cool the bearing 4 by utilizing water cooling and air cooling modes, and the specific operation is as follows:

before the utility model is used, a user can select an air cooling or water cooling mode to cool, and the water cooling effect is generally greater than the air cooling effect.

When water cooling is selected, the first switch valve 22 and the second switch valve 23 are opened, the third switch valve 24 is closed, the cover 25 at the air cooling outlet 12 is opened, cooling liquid is poured into the cooling cavity 8 along the air cooling outlet 12, the cooling liquid is selected from water, alcohol, glycerin, glycol and the like, the cover 25 is closed, and as the cover 25 is provided with the sealing piece 27, the air cooling channel is not required to be overflowed in the cooling process, the cooling liquid can be injected into the cooling cavity 8 and the radiator 13, the radiator 13 and the circulating pump 17 are started, the cooling liquid circulates between the cooling cavity 8 and the radiator 13, so that the cooling effect of the bearing 4 is achieved, and the first switch valve 22 and the second switch valve 23 can be used for controlling the flow rate of the cooling liquid in the circulating process.

When the air cooling is selected, a user can close the first switch valve 22 and the second switch valve 23 so as to close the water cooling circulation channel, open the third switch valve 24 and the cover body 25 so as to open the air cooling channel, start the blower 14, and enable the air outlet of the blower 14 to flow out of the air cooling outlet 12 through the cooling cavity 8, thereby achieving the effect of heat dissipation of the bearing 4.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. A molten salt pump, characterized by: the molten salt pump comprises a motor (1), a shaft coupling (2), a pump shaft (3), a bearing (4), an impeller (5), a bearing box (6) and a shell (7), wherein the output end of the motor (1) is fixedly connected with the shaft coupling (2), the pump shaft (3) is arranged at the other end of the shaft coupling (2), the impeller (5) is fixedly arranged at the bottom of the pump shaft (3), the bearing (4) is sleeved on the outer surface of the pump shaft (3), the bearing (4) is externally provided with the bearing box (6), the bearing (4) is fixedly connected with the bearing box (6), the shell (7) is fixedly connected with the bearing box (6), a cooling cavity (8) is formed in the bearing box (6), a water cooling inlet (9), a water cooling outlet (10), a molten salt inlet (11) and an air cooling outlet (12), the water cooling inlet (9), the water cooling outlet (10), the air cooling inlet (11) and the air cooling cavity (12) are respectively sleeved on the outer surface of the bearing box (4), the bearing box (6), the shaft (2), the part of the pump (3) and the impeller (5) are fixedly connected with the shell (5) by being sleeved with the shell (7), the bearing (6) and the cooling cavity (8) by the cooling cavity (13), radiator (13) are provided with heat dissipation entry (15) and heat dissipation export (16), heat dissipation entry (15) are linked together through the pipeline with water-cooling export (10), heat dissipation export (16) are linked together through the pipeline with water-cooling entry (9), heat dissipation entry (15) are fixed with circulating pump (17), air-blower (14) are provided with air-blower outlet (18), air-blower outlet (18) are linked together through the pipeline with air-cooling entry (11).

2. The molten salt pump of claim 1 wherein: the molten salt pump further comprises a molten salt inlet (19) and a molten salt outlet (20).

3. The molten salt pump of claim 1 wherein: the bearing (4) is a rolling bearing (4).

4. The molten salt pump of claim 1 wherein: the bearing housing (6) is provided with a coolant drain opening (21).

5. The molten salt pump of claim 1 wherein: the water cooling inlet (9) is provided with a first switch valve (22).

6. The molten salt pump of claim 1 wherein: the water-cooling outlet (10) is provided with a second switch valve (23).

7. The molten salt pump of claim 1 wherein: the air cooling inlet (11) is provided with a third switch valve (24).

8. The molten salt pump of claim 1 wherein: the air cooling outlet (12) is provided with a cover body (25), and the cover body (25) is hinged with the air cooling outlet (12).

9. The molten salt pump of claim 7 wherein: the air cooling inlet (11) is provided with a filter screen (26).

10. The molten salt pump of claim 8 wherein: the cover body (25) is provided with a sealing element (27), the sealing element (27) is detachably and fixedly connected with the cover body (25), and the sealing element (27) is movably matched with the bearing box (6).