Centrifugal pump cooling device

Abstract

The utility model relates to the technical field of centrifugal pumps, in particular to a centrifugal pump cooling device, which is characterized in that the left upper end of a base is fixedly connected with a pump head, the inside of the side wall of the pump head is hermetically connected with a first spiral cooling pipe, and the right side of the upper end of the base is fixedly connected with a bearing frame; a second spiral cooling pipe is connected to the interior of the side wall of the bearing frame in a sealed mode, a first backflow pipe is connected to the rear end of the second spiral cooling pipe in a sealed mode, and a second backflow pipe is connected to the lower left end of the first backflow pipe in a sealed mode. The cooling liquid can be injected into the first spiral cooling pipe through the first liquid injection pipe, the cooling liquid can be injected into the second spiral cooling pipe through the second liquid injection pipe, and the output cooling liquid can enter the cooling liquid box through the first backflow pipe and the second backflow pipe, so that the cooling liquid can be recycled by the device; and multiple positions of the centrifugal pump can be cooled.

Description

Technical Field

[0001] The utility model relates to a centrifugal pump cooling device, belonging to the technical field of centrifugal pumps. Background Art

[0002] A centrifugal pump works by using the rotation of the impeller to cause water to undergo centrifugal motion. Before starting the pump, the pump casing and the suction pipe must be filled with water. Then the motor is started so that the pump shaft drives the impeller and water to rotate at high speed. The water undergoes centrifugal motion and is thrown to the outer edge of the impeller, flowing into the water pressure pipeline of the pump through the flow channel of the volute pump casing. The basic structure of a centrifugal pump consists of six parts: impeller, pump body, pump shaft, bearings, sealing rings, and stuffing box.

[0003] The existing patent number is CN206221384U, which is a centrifugal pump cooling device. This device installs a water tank, adds water into the water tank, cools the mechanical seal, and then returns the cooled water to the water tank, reducing water loss and frequent water adding during operation, reducing the risk of seal burning. However, this device can only cool the mechanical seal, but cannot cool the pump head and bearings. The bearings need to be kept at around 60° to operate safely. Failure to cool the bearings will cause heat loss of the bearings, affecting the safe operation of the pump. Although this device can recycle cooling water, it cannot perform temperature control, so that different centrifugal pumps cannot operate at a constant temperature when operating in different temperature environments. Simply cooling will also affect the use effect of the centrifugal pump. Utility Model Content

[0004] The purpose of the present utility model is to provide a centrifugal pump cooling device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A centrifugal pump cooling device comprises a base, a pump head and a drive motor, wherein the upper left end of the base is fixedly connected to the pump head, the side wall of the pump head is internally sealed and connected to a first spiral cooling pipe, the upper right end of the base is fixedly connected to a bearing frame, the side wall of the bearing frame is internally sealed and connected to a second spiral cooling pipe, the rear end of the second spiral cooling pipe is sealed and connected to a first return pipe, the lower left end of the first return pipe is sealed and connected to the second return pipe, the second return pipe and the first spiral cooling pipe are sealed and connected, the lower end of the second return pipe is sealed and connected to a coolant tank, the coolant tank is fixedly connected to the base, and the lower left end of the coolant tank is fixedly connected to a temperature control pipe.

[0007] Furthermore, the right end of the pump head is connected to a mechanical seal, and the pump shaft is rotatably connected to the middle position of the right end of the pump head. The outer side of the right end of the pump shaft is fixedly connected to a bearing body, and the outer ring of the bearing body is fixedly connected to the bearing frame. The right end of the bearing body is provided with a drive motor, and the drive motor is fixedly connected to the base, and the output shaft of the drive motor is fixedly connected to the bearing body through a coupling.

[0008] Furthermore, a water pump is sealedly connected to the lower right side of the front end surface of the coolant tank, and the water pump is fixedly connected to the base. The left and right sides of the front end of the water pump are respectively sealed with a first liquid injection pipe and a second liquid injection pipe, the first liquid injection pipe is sealed to the first spiral cooling pipe, and the second liquid injection pipe is sealed to the second spiral cooling pipe.

[0009] Furthermore, a refrigeration cavity is provided on the left side of the interior of the coolant tank, a liquid outlet cavity is provided on the right side of the interior of the coolant tank, and a guide hole is provided on the upper side of the internal partition of the coolant tank.

[0010] Furthermore, a hot end radiator is provided at the hot end of the left front end of the temperature control tube.

[0011] Furthermore, a digital controller is fixedly connected to the left end of the coolant tank, and the digital controller is electrically connected to the hot end radiator. A digital display panel is provided on the upper side of the left end of the digital controller, and a temperature control button is provided on the lower side of the left end surface of the digital controller.

[0012] Furthermore, a heat sink is provided at the upper end of the driving motor, and a water inlet pipe is provided at the front end of the heat sink.

[0013] The beneficial effects of the utility model are:

[0014] The utility model is provided with a water pump to extract the coolant in the right liquid outlet cavity of the coolant tank, and inject it into the first spiral cooling pipe through the first liquid injection pipe, so as to cool the pump head and the mechanical seal, and inject the coolant into the second spiral cooling pipe through the second liquid injection pipe, so as to control the temperature of the bearing frame and the bearing, and make the output coolant enter the coolant tank through the first return pipe and the second return pipe, so that the device can not only circulate the coolant, but also cool down multiple positions of the centrifugal pump, so that the centrifugal pump The use of the utility model is safer. After the coolant enters the coolant tank again through the first return pipe and the second return pipe, the coolant will first enter the refrigeration cavity, and the coolant will be temperature-conducted by the temperature control pipe. The output temperature of the temperature control pipe can be controlled by the temperature control button and the digital display panel. After the coolant after temperature conduction fills the refrigeration cavity, the coolant after temperature conduction can enter the liquid outlet cavity through the diversion hole, so that the centrifugal pump can be appropriately cooled according to the ambient temperature of the centrifugal pump, so as to avoid the centrifugal pump from being unable to operate due to cooling due to excessively cold weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the specific embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0016] Figure 1 This is a front view of a centrifugal pump cooling device of the utility model;

[0017] Figure 2 This utility model is a centrifugal pump cooling device Figure 1 Schematic diagram of the installation structure at A;

[0018] Figure 3 This is a schematic diagram of the installation structure of the first liquid injection pipe and the second liquid injection pipe of a centrifugal pump cooling device of the utility model;

[0019] Figure 4 This is a cross-sectional view of the installation structure of a coolant tank and a digital controller of a centrifugal pump cooling device of the utility model;

[0020] Numbers in the figure: 1. Base; 2. Pump head; 3. First spiral cooling tube; 4. Bearing frame; 5. Second spiral cooling tube; 6. First return pipe; 7. Second return pipe; 8. Coolant tank; 9. Temperature control tube; 10. Mechanical seal; 11. Pump shaft; 12. Bearing body; 13. Drive motor; 14. Water pump; 15. First liquid injection pipe; 16. Second liquid injection pipe; 17. Refrigeration chamber; 18. Liquid outlet chamber; 19. Diversion hole; 20. Hot end radiator; 21. Digital controller; 22. Digital display panel; 23. Temperature control button. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1, please refer to Figures 1-4 , the utility model provides a technical solution:

[0023] A centrifugal pump cooling device includes a base 1, a pump head 2 and a drive motor 13. The upper left end of the base 1 is fixedly connected to the pump head 2. The side wall of the pump head 2 is sealed and connected to a first spiral cooling pipe 3. The right side of the upper end of the base 1 is fixedly connected to a bearing frame 4. The side wall of the bearing frame 4 is sealed and connected to a second spiral cooling pipe 5. The rear end of the second spiral cooling pipe 5 is sealed and connected to a first reflux pipe 6. The lower left end of the first reflux pipe 6 is sealed and connected to a second reflux pipe 7. The second reflux pipe 7 is sealed and connected to the first spiral cooling pipe 3. The second reflux pipe 7 is sealed and connected to the first spiral cooling pipe 3. The lower end of the tube 7 is sealed and connected to the coolant tank 8, which is fixedly connected to the base 1. The right end of the pump head 2 is connected to a mechanical seal 10. The middle position of the right end of the pump head 2 is rotatably connected to the pump shaft 11. The right end of the pump shaft 11 is fixedly connected to the outer side of the bearing body 12. The outer ring of the bearing body 12 is fixedly connected to the bearing frame 4. The right end of the bearing body 12 is provided with a drive motor 13, which is fixedly connected to the base 1. The output shaft of the drive motor 13 is fixedly connected to the bearing body 12 through a coupling. The lower right side of the front end face of the box 8 is sealed with a water pump 14, which is fixedly connected to the base 1. The left and right sides of the front end of the water pump 14 are respectively sealed with a first liquid injection pipe 15 and a second liquid injection pipe 16. The first liquid injection pipe 15 is sealed with the first spiral cooling pipe 3, and the second liquid injection pipe 16 is sealed with the second spiral cooling pipe 5. The upper end of the drive motor 13 is provided with a heat dissipation box, and the front end of the heat dissipation box is provided with a water inlet pipe. By setting the function of the water pump 14, the coolant in the right liquid outlet cavity 18 inside the coolant box 8 can be discharged. The coolant is extracted and injected into the first spiral cooling tube 3 through the first injection tube 15, so that the pump head 2 and the mechanical seal 10 can be cooled, and the coolant can be injected into the second spiral cooling tube 5 through the second injection tube 16, so that the bearing frame 4 and the bearing can be temperature-controlled, and the output coolant can enter the coolant tank 8 through the first return tube 6 and the second return tube 7, so that the device can not only recycle the coolant, but also cool down multiple positions of the centrifugal pump, making the use of the centrifugal pump safer.

[0024] Example 2, please refer to Figures 1-4 The difference between this embodiment and embodiment 1 is that: a temperature control tube 9 is fixedly connected to the lower left end of the interior of the coolant tank 8, a refrigeration chamber 17 is opened on the left side of the interior of the coolant tank 8, a liquid outlet chamber 18 is opened on the right side of the interior of the coolant tank 8, a guide hole 19 is opened on the upper side of the internal partition of the coolant tank 8, a hot end radiator 20 is provided at the hot end of the left front end of the temperature control tube 9, a digital controller 21 is fixedly connected to the left end of the coolant tank 8, the digital controller 21 is electrically connected to the hot end radiator 20, a digital display panel 22 is provided on the upper left end of the digital controller 21, and a temperature control panel 22 is provided on the lower left end surface of the digital controller 21. Button 23, after the coolant passes through the first return pipe 6 and the second return pipe 7 and enters the coolant tank 8 again, the coolant will first enter the refrigeration chamber 17, and the coolant will be temperature-conducted by the temperature control tube 9. The output temperature of the temperature control tube 9 can be controlled by the temperature control button 23 and the digital display panel 22. After the coolant after temperature conduction fills the refrigeration chamber 17, the coolant after temperature conduction can enter the liquid outlet chamber 18 through the diversion hole 19, so that the centrifugal pump can be appropriately cooled according to the ambient temperature of the centrifugal pump to avoid the centrifugal pump from being unable to operate due to cooling due to excessive cold weather.

[0025] Working principle of the utility model: When the device is in use, the coolant in the right liquid outlet cavity 18 of the coolant tank 8 can be extracted by setting the function of the water pump 14, and injected into the first spiral cooling tube 3 through the first liquid injection pipe 15, so that the pump head 2 and the mechanical seal 10 can be cooled, and the coolant can be injected into the second spiral cooling tube 5 through the second liquid injection pipe 16, so that the bearing frame 4 and the bearing can be temperature-controlled, and the output coolant can enter the coolant tank 8 through the first return pipe 6 and the second return pipe 7, so that the device can not only circulate the coolant, but also can cool multiple positions of the centrifugal pump. The cooling treatment makes the use of the centrifugal pump safer. After the coolant passes through the first return pipe 6 and the second return pipe 7 and enters the coolant tank 8 again, the coolant will first enter the refrigeration cavity 17, and the coolant will be temperature-conducted by the temperature control tube 9. The output temperature of the temperature control tube 9 can be controlled by the temperature control button 23 and the digital display panel 22. After the coolant after temperature conduction fills the refrigeration cavity 17, the coolant after temperature conduction can enter the liquid outlet cavity 18 through the diversion hole 19, so that the centrifugal pump can be appropriately cooled according to the ambient temperature of the centrifugal pump, avoiding the centrifugal pump from being unable to operate due to cooling due to excessive cold weather.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal pump cooling device, comprising a base (1), a pump head (2) and a drive motor (13), characterized in that: The upper left end of the base (1) is fixedly connected to a pump head (2), the side wall of the pump head (2) is sealedly connected to a first spiral cooling pipe (3), the right side of the upper end of the base (1) is fixedly connected to a bearing frame (4), the side wall of the bearing frame (4) is sealedly connected to a second spiral cooling pipe (5), the rear end of the second spiral cooling pipe (5) is sealedly connected to a first return pipe (6), the lower left end of the first return pipe (6) is sealedly connected to a second return pipe (7), the second return pipe (7) and the first spiral cooling pipe (3) are sealedly connected, the lower end of the second return pipe (7) is sealedly connected to a coolant tank (8), the coolant tank (8) is fixedly connected to the base (1), and the lower left end of the coolant tank (8) is fixedly connected to a temperature control pipe (9).

2. A centrifugal pump cooling device according to claim 1, characterized in that: The right end of the pump head (2) is connected to a mechanical seal (10), and the middle position of the right end of the pump head (2) is rotatably connected to a pump shaft (11), and the outer side of the right end of the pump shaft (11) is fixedly connected to a bearing body (12), and the outer ring of the bearing body (12) is fixedly connected to the bearing frame (4). The right end of the bearing body (12) is provided with a drive motor (13), and the drive motor (13) is fixedly connected to the base (1), and the output shaft of the drive motor (13) is fixedly connected to the bearing body (12) via a coupling.

3. A centrifugal pump cooling device according to claim 1, characterized in that: A water pump (14) is sealedly connected to the lower right side of the front end surface of the coolant tank (8), and the water pump (14) is fixedly connected to the base (1). The left and right sides of the front end of the water pump (14) are respectively sealedly connected to a first injection pipe (15) and a second injection pipe (16), the first injection pipe (15) is sealedly connected to the first spiral cooling pipe (3), and the second injection pipe (16) is sealedly connected to the second spiral cooling pipe (5).

4. A centrifugal pump cooling device according to claim 1, characterized in that: A refrigeration cavity (17) is provided on the left side of the interior of the coolant tank (8), a liquid outlet cavity (18) is provided on the right side of the interior of the coolant tank (8), and a guide hole (19) is provided on the upper side of the internal partition of the coolant tank (8).

5. The centrifugal pump cooling device according to claim 1, characterized in that: A hot end radiator (20) is provided at the left front end hot end of the temperature control tube (9).

6. The centrifugal pump cooling device according to claim 1, characterized in that: The left end of the coolant tank (8) is fixedly connected to a digital controller (21), the digital controller (21) is electrically connected to the hot end radiator (20), a digital display panel (22) is provided on the upper side of the left end of the digital controller (21), and a temperature control button (23) is provided on the lower side of the left end surface of the digital controller (21).

7. The centrifugal pump cooling device according to claim 2, characterized in that: A heat sink is provided at the upper end of the driving motor (13), and a water inlet pipe is provided at the front end of the heat sink.

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