A floating cantilever submerged centrifugal pump unit for heat medium

Abstract

The utility model relates to the technical field of centrifugal pump groups, and in particular to a buoy-type cantilever submerged centrifugal pump group for heat medium; in the process of using traditional centrifugal pump groups, when a submerged pump structure is adopted, the bearing is prone to temperature rise and burnout, and the self-priming pump is prone to cavitation and cannot work normally, thus inconvenient to achieve the problem of high efficiency and practicality; the application provides a buoy-type cantilever submerged centrifugal pump group for heat medium, including a cooling component and a floating component; compared with the problem that in the process of using traditional centrifugal pump groups, when a submerged pump structure is adopted, the bearing is prone to temperature rise and burnout, and the self-priming pump is prone to cavitation and cannot work normally, thus inconvenient to achieve the problem of high efficiency and practicality, the centrifugal pump group is provided with a cooling structure and a floating structure, and the entire pump group can float on the high-temperature heat medium liquid surface to work, and only the pump shaft and impeller extend below the liquid surface. With the guarantee of cooling water, the pump group can work for a long time, can save a lot of maintenance costs, the whole machine is easy to process and manufacture, has great practical value and application prospects, and can achieve efficient and practical effects.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pump groups, in particular to a buoy-type cantilever submerged centrifugal pump group for heat medium. Background Art

[0002] In the liquid transportation conditions of the factory, it is easy to encounter high-temperature media. Sometimes the site conditions are limited and the pump inlet cannot be designed to be filled (the center of the pump inlet is lower than the liquid level); sometimes the medium temperature is too high, and it is not suitable to use submersible pumps, submersible pumps or self-priming pumps. The submersible pump motor is easy to burn out due to high temperature. When the submersible pump structure is used, the bearing is easy to burn out due to temperature rise. The self-priming pump is easy to produce cavitation and cannot work normally. Even if any of these pumps is reluctantly used, occasional use may not be a big problem, but the service life is limited, resulting in high operating costs, frequent maintenance, and affecting the normal production of the factory. In order to solve the problems of such working conditions, it is necessary to design a buoy-type cantilever submersible centrifugal pump group for hot media. The utility model relates to the technical field of centrifugal pump groups. With the development of society, the centrifugal pump group industry has become more and more developed, and centrifugal pump groups have been continuously improved to meet the needs of production. Utility Model Content

[0003] In order to overcome the problem that centrifugal pump groups are prone to high-temperature media during use in liquid transportation conditions in factories, sometimes the site conditions are limited and the pump inlet cannot be designed as a perfusion type (the center of the pump inlet is lower than the liquid level); sometimes the medium temperature is too high, and it is not appropriate to use submersible pumps, submersible pumps or self-priming pumps. The submersible pump motor is prone to burn out due to high temperature, and the bearings are prone to burn out due to temperature rise when using a submersible pump structure. The self-priming pump is prone to cavitation and cannot work normally, making it inconvenient to achieve high efficiency and practicality.

[0004] The technical solution of the utility model is: a buoy-type cantilever submerged centrifugal pump group for heat medium, comprising a mounting plate, a driving component, a cooling component, a floating component, an auxiliary component and a ventilation component; a driving component is arranged above the mounting plate, a cooling component is arranged on the side wall of the driving component, floating components with floating function are arranged on both sides of the mounting plate, a ventilation component is arranged on the side wall of the floating component, and an auxiliary component is arranged outside the mounting plate.

[0005] Preferably, the entire pump unit can float on the surface of the high-temperature heat medium and only the pump shaft and impeller extend below the liquid surface. With the guarantee of cooling water, the pump unit can work for a long time, which can save a lot of maintenance costs. By changing the material of the float and the pump, this kind of pump unit can adapt to heat media with certain corrosiveness, has a wide applicability, is easy to process and manufacture, and has great practical value and application prospects.

[0006] Preferably, the drive assembly includes a drive motor and a water-cooled bearing seat; a water-cooled bearing seat is arranged above the mounting plate, and a drive motor is arranged above the water-cooled bearing seat, and the drive motor is fixedly connected to the water-cooled bearing seat; the centrifugal pump adopts a cantilever submersible pump and is equipped with a water-cooled bearing seat. All bearings of this pump are above the liquid level of the heat medium and the temperature will be lower than the temperature of the heat medium.

[0007] Preferably, the cooling assembly includes a cooling water interface and a pump body; a cooling water interface is provided on the side wall of the water-cooled bearing seat, two groups of cooling water interfaces are provided, and a pump body is provided under the water-cooled bearing seat; the water-cooled bearing seat is designed with a cooling water interface, through which cooling water can be continuously passed to cool the bearing body, thereby maintaining the normal working temperature of the bearing in the bearing seat.

[0008] Preferably, the floating assembly includes a buoy and a bracket; buoys are arranged on both sides of the mounting plate, the side walls of the buoys are fixedly connected to the side walls of the mounting plate, and a bracket is arranged on the outside of the buoy; the supporting buoys are designed according to the weight of the cantilever submersible pump and the motor, and the mounting plate and the bracket are designed between the supporting buoys, and the bracket is used to fix the two buoys.

[0009] Preferably, the buoyancy component also includes a connecting rod and a support foot; a connecting rod is arranged inside the bracket, the bracket is fixedly connected to the buoy, and a support foot is arranged below the bracket; a support foot is arranged at the lower part of the bracket for supporting the weight of the pump group and the buoy, and it only plays a supporting role when the liquid level is low or there is no liquid.

[0010] Preferably, the auxiliary components include a float level gauge and a connecting pipeline; a connecting pipeline is arranged inside the mounting plate, the connecting pipeline runs through the interior of the mounting plate, and a float level gauge is arranged at one end of the connecting pipeline; the start and stop of the pump can be controlled by the float level gauge and the control cabinet on the ground.

[0011] Preferably, the ventilation assembly includes a ventilation pipe and a pump outlet hose; a ventilation pipe is arranged above the float, a pump outlet hose is arranged on the side wall of the pump body, and the pump outlet hose runs through the interior of the mounting plate; the float is designed with a ventilation pipe, which is connected to the atmosphere to prevent the air from expanding and bursting, and the pump outlet hose is connected with a high-temperature resistant hose to transport the heat medium outward, and the pump outlet hose, the bearing seat cooling water pipe, the liquid level signal line and the motor power cable are all supported by a liftable elastic suspension cable to prevent them from falling into the heat medium. When the pump unit is working normally, it always floats on the liquid surface and rises and falls with the liquid level.

[0012] Beneficial effects of the utility model:

[0013] 1. Compared with the traditional centrifugal pump group, it is easy to encounter high-temperature media during the use of the liquid transportation conditions in the factory. Sometimes the site conditions are limited and the pump inlet cannot be designed as a perfusion type (the center of the pump inlet is lower than the liquid level); sometimes the medium temperature is too high, and it is not suitable to use a submersible pump, a submersible pump or a self-priming pump. The submersible pump motor is easy to burn out due to high temperature. When the submersible pump structure is used, the bearing is easy to burn out due to temperature rise. The self-priming pump is easy to produce cavitation and cannot work normally, which is inconvenient to achieve efficient and practical problems. The centrifugal pump group is provided with a cooling structure and a floating structure. The entire pump group can float on the high-temperature hot medium liquid surface to work. Only the pump shaft and the impeller extend below the liquid surface. With the guarantee of cooling water, the pump group can work for a long time, which can save a lot of maintenance costs. The whole machine is easy to process and manufacture, and has great practical value and application prospects, so that efficient and practical effects can be achieved;

[0014] 2. The centrifugal pump adopts a cantilever submersible pump and is equipped with a water-cooled bearing seat. All bearings of this pump are above the liquid level of the heat medium, and the temperature will be lower than the temperature of the heat medium. The water-cooled bearing seat is designed with a water-cooling jacket, which can always pass cooling water to cool the bearing body, thereby maintaining the normal working temperature of the bearing in the bearing seat. According to the weight of the cantilever submersible pump and the motor, a supporting buoy is designed. A mounting plate and a bracket are designed between the supporting buoys. The bracket is used to fix and connect the two buoys. The lower part of the bracket is provided with a foot to support the weight of the pump group and the buoy. It plays a supporting role only when the liquid level is low or there is no liquid;

[0015] 3. The cantilever submersible pump and float level gauge are installed on the mounting plate. The start and stop of the pump can be controlled by the float level gauge and the control cabinet on the ground. The float is designed with a vent pipe connected to the atmosphere to prevent the air from expanding and bursting. The pump outlet is connected with a high-temperature resistant hose to transport the heat medium outward. The pump outlet hose, bearing seat cooling water pipe, liquid level signal line and motor power cable are all supported by elastic suspension cables that can be raised and lowered to prevent them from falling into the heat medium. When the pump unit is working normally, it always floats on the liquid surface, thereby achieving the effect of rising and falling with the liquid level. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 What is shown is a first three-dimensional structural schematic diagram of a buoy-type cantilever submerged centrifugal pump group for heat medium of the utility model;

[0017] Figure 2 The first partial three-dimensional structure diagram of a buoy-type cantilever submerged centrifugal pump group for heat medium of the utility model is shown;

[0018] Figure 3 The second partial three-dimensional structure diagram of a buoy-type cantilever submerged centrifugal pump group for heat medium of the utility model is shown;

[0019] Figure 4The third partial three-dimensional structure diagram of a buoy-type cantilever submerged centrifugal pump group for heat medium of the utility model is shown;

[0020] Explanation of the reference numerals: 1. driving assembly; 2. cooling assembly; 3. buoyancy assembly; 4. auxiliary assembly; 5. ventilation assembly; 6. mounting plate; 101. driving motor; 102. water-cooled bearing seat; 201. cooling water interface; 202. pump body; 301. supporting buoy; 302. bracket; 303. connecting rod; 304. support foot; 401. float level gauge; 402. connecting pipeline; 501. ventilation pipe; 502. pump outlet hose. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] See also Figure 1 The utility model provides an embodiment: a buoy 301-type cantilever submerged centrifugal pump group for supporting a heat medium, comprising a mounting plate 6, a driving component 1, a cooling component 2, a floating component 3, an auxiliary component 4 and a ventilation component 5; a driving component 1 is arranged above the mounting plate 6, a cooling component 2 is arranged on the side wall of the driving component 1, floating components 3 with a floating function are arranged on both sides of the mounting plate 6, a ventilation component 5 is arranged on the side wall of the floating component 3, and an auxiliary component 4 is arranged outside the mounting plate 6.

[0023] See also Figure 2 , the driving component 1 includes a driving motor 101 and a water-cooled bearing seat 102; a water-cooled bearing seat 102 is arranged above the mounting plate 6, and a driving motor 101 is arranged above the water-cooled bearing seat 102, and the driving motor 101 is fixedly connected to the water-cooled bearing seat 102; the centrifugal pump adopts a cantilever submersible pump and is equipped with a water-cooled bearing seat 102. All bearings of this pump are above the liquid level of the heat medium and the temperature will be lower than the temperature of the heat medium; the cooling component 2 includes a cooling water interface 201 and a pump body 202; a cooling water interface 201 is arranged on the side wall of the water-cooled bearing seat 102, and the cooling water interface 201 is arranged in two groups, and the bottom of the water-cooled bearing seat 102 A pump body 202 is provided; the water-cooled bearing seat 102 is designed with a cooling water interface 201, which can continuously pass cooling water to cool the bearing body, thereby maintaining the normal working temperature of the bearing in the bearing seat; the floating assembly 3 includes a supporting buoy 301 and a bracket 302; supporting buoys 301 are provided on both sides of the mounting plate 6, the side walls of the supporting buoy 301 are fixedly connected to the side walls of the mounting plate 6, and the outside of the supporting buoy 301 is provided with a bracket 302; the supporting buoy 301 is designed according to the weight of the cantilever submersible pump and the motor, and the supporting buoy 301 is designed, and the mounting plate 6 and the bracket 302 are designed between the supporting buoys 301, and the bracket 302 is used to fix the two supporting buoys 301.

[0024] See also Figure 3-4 In this embodiment, the float assembly 3 also includes a connecting rod 303 and a support leg 304; a connecting rod 303 is arranged inside the bracket 302, the bracket 302 is fixedly connected to the supporting buoy 301, and a support leg 304 is arranged below the bracket 302; a support leg 304 is arranged at the lower part of the bracket 302 for supporting the weight of the pump group and the supporting buoy 301, and it plays a supporting role only when the liquid level is low or there is no liquid; the auxiliary assembly 4 includes a float level gauge 401 and a connecting pipeline 402; a connecting pipeline 402 is arranged inside the mounting plate 6, and the connecting pipeline 402 runs through the inside of the mounting plate 6, and a float level gauge 401 is arranged at one end of the connecting pipeline 402; the start and stop of the pump can be controlled by the float level gauge 401 and the ground The control cabinet on the control; the ventilation component 5 includes a ventilation pipe 501 and a pump outlet hose 502; a ventilation pipe 501 is arranged above the supporting buoy 301, and a pump outlet hose 502 is arranged on the side wall of the pump body 202, and the pump outlet hose 502 runs through the interior of the mounting plate 6; the supporting buoy 301 is designed with a ventilation pipe 501, which is connected to the atmosphere to prevent the air from expanding and bursting. The pump outlet hose 502 is connected with a high-temperature resistant hose to transport the heat medium outward, and the pump outlet hose 502 hose, the bearing seat cooling water pipe, the liquid level signal line and the motor power cable are all supported by a liftable elastic suspension cable to avoid falling into the heat medium. When the pump unit is working normally, it always floats on the liquid surface and rises and falls with the liquid level.

[0025] When working, the centrifugal pump adopts a cantilever submerged pump and is equipped with a water-cooled bearing seat 102. All bearings of this pump are above the liquid level of the heat medium and the temperature is lower than the temperature of the heat medium.

[0026] The water-cooled bearing seat 102 is designed with a water-cooling jacket, which can always pass cooling water to cool the bearing body, thereby maintaining the normal working temperature of the bearing in the bearing seat;

[0027] According to the weight of the cantilever submersible pump and the motor, a supporting buoy 301 is designed, and a mounting plate 6 and a bracket 302 are designed between the supporting buoys 301. The bracket 302 is used to fix and connect the two supporting buoys 301. The lower part of the bracket 302 is provided with a support leg 304 for supporting the weight of the pump group and the supporting buoy 301. It plays a supporting role only when the liquid level is low or there is no liquid. The cantilever submersible pump and the float liquid level gauge 401 are installed on the mounting plate 6;

[0028] The start and stop of the pump can be controlled by the float level gauge 401 and the control cabinet on the ground. The support buoy 301 is designed with a vent pipe 501, which is connected to the atmosphere to prevent the air from expanding and bursting;

[0029] The pump outlet is connected with a high temperature resistant hose to transport the heat medium outward. The pump outlet hose 502, the bearing seat cooling water pipe, the liquid level signal line and the motor power cable are all supported by a retractable elastic suspension cable to prevent them from falling into the heat medium;

[0030] When the pump unit is working normally, it always floats on the liquid surface and rises and falls with the liquid level.

[0031] Through the above steps, the entire pump unit can float on the surface of the high-temperature heat medium and work, and only the pump shaft and impeller extend below the liquid surface. With the guarantee of cooling water, the pump unit can work for a long time, which can save a lot of maintenance costs. By changing the materials of the supporting buoy 301 and the pump, this kind of pump unit can adapt to heat media with certain corrosiveness, has a wide applicability, is easy to process and manufacture, and has great practical value and application prospects.

[0032] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A buoy-type cantilever submerged centrifugal pump assembly for heat medium, comprising a mounting plate (6); characterized in that: The invention also comprises a driving component (1), a cooling component (2), a floating component (3), an auxiliary component (4) and a ventilation component (5); the driving component (1) is arranged above the mounting plate (6), the cooling component (2) is arranged on the side wall of the driving component (1), floating components (3) with a floating function are arranged on both sides of the mounting plate (6), the ventilation component (5) is arranged on the side wall of the floating component (3), and the auxiliary component (4) is arranged outside the mounting plate (6).

2. A buoy-type cantilever submerged centrifugal pump set for heat medium according to claim 1, characterized in that: The driving assembly (1) comprises a driving motor (101) and a water-cooled bearing seat (102); the water-cooled bearing seat (102) is arranged above the mounting plate (6), the driving motor (101) is arranged above the water-cooled bearing seat (102), and the driving motor (101) is fixedly connected to the water-cooled bearing seat (102).

3. A buoy-type cantilever submerged centrifugal pump set for heat medium according to claim 2, characterized in that: The cooling assembly (2) comprises a cooling water interface (201) and a pump body (202); a cooling water interface (201) is arranged on the side wall of the water-cooled bearing seat (102), two groups of cooling water interfaces (201) are arranged, and a pump body (202) is arranged below the water-cooled bearing seat (102).

4. A buoy-type cantilever submerged centrifugal pump set for heat medium according to claim 1, characterized in that: The buoyancy component (3) comprises a supporting buoy (301) and a bracket (302); the supporting buoys (301) are arranged on both sides of the mounting plate (6), the side walls of the supporting buoys (301) are fixedly connected to the side walls of the mounting plate (6), and the outside of the supporting buoys (301) is arranged with a bracket (302).

5. A buoy-type cantilever submerged centrifugal pump set for heat medium according to claim 4, characterized in that: The buoyancy support assembly (3) further comprises a connecting rod (303) and a support foot (304); the connecting rod (303) is arranged inside the support (302), the support (302) is fixedly connected to the supporting buoy (301), and the support foot (304) is arranged below the support (302).

6. A buoy-type cantilever submerged centrifugal pump set for heat medium according to claim 1, characterized in that: The auxiliary component (4) comprises a float liquid level gauge (401) and a connecting pipeline (402); the connecting pipeline (402) is arranged inside the mounting plate (6), the connecting pipeline (402) runs through the inside of the mounting plate (6), and the float liquid level gauge (401) is arranged at one end of the connecting pipeline (402).

7. A buoy-type cantilever submerged centrifugal pump set for heat medium according to claim 4, characterized in that: The ventilation assembly (5) comprises a ventilation pipe (501) and a pump outlet hose (502); the ventilation pipe (501) is arranged above the supporting buoy (301), the pump outlet hose (502) is arranged on the side wall of the pump body (202), and the pump outlet hose (502) runs through the interior of the mounting plate (6).

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