Auxiliary heat dissipation device of centrifugal pump

Abstract

The auxiliary heat dissipation device comprises a centrifugal pump fixing bottom plate, the upper side of the centrifugal pump fixing bottom plate is fixedly connected with a centrifugal pump body and a heat dissipation machine shell, and a centrifugal pump motor is arranged in the heat dissipation machine shell. An output shaft of the centrifugal pump motor penetrates through the heat dissipation machine shell to be fixedly connected with an impeller in the centrifugal pump body, a heat dissipation centrifugal bin is arranged on the side, facing the centrifugal pump body, of the heat dissipation machine shell, and a ventilation channel is arranged between the heat dissipation machine shell and the heat dissipation centrifugal bin. A plurality of centrifugal fan blades are arranged in the heat dissipation centrifugal bin and located on the outer wall of the output end of the centrifugal pump motor at equal intervals, the output end of the centrifugal pump motor drives the centrifugal fan blades to rotate at a high speed in the heat dissipation centrifugal bin, cold air can be thrown to the flow guide air pipe, one-way airflow is formed in the heat exchange channel, and in the process, cold water is pumped in from one end of the heat exchange cold water pipe; the heat exchange cold water pipe is pumped out from the other end of the heat exchange cold water pipe and can exchange heat with one-way airflow in the heat exchange channel.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to an auxiliary heat dissipation device of a centrifugal pump. Background Art

[0002] A centrifugal pump is a pump that transports liquids by the centrifugal force generated by the rotation of the impeller. There are many types of centrifugal pumps, such as vertical, horizontal, single-stage, multi-stage, single-suction, double-suction, and self-priming. A centrifugal pump works by using the rotation of the impeller to cause the water to undergo centrifugal motion. Before starting the water pump, the pump casing and the suction pipe must be filled with water, and then the centrifugal pump 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, and flows into the water pressure pipeline of the water pump through the flow channel of the volute pump casing.

[0003] Chinese patent announcement number CN220470336U discloses an auxiliary heat dissipation device of a centrifugal pump, which discharges the hot air inside the machine body through the filter screen through a fan. After the equipment is used for a long time, the dust is affected by the airflow of the fan and adheres to the filter screen, blocking the filter screen. At this time, the heat inside the equipment is difficult to discharge. When the fan rotates, the device drives the bevel gear, and the bevel gear pushes the meshing teeth. The rotation of the meshing teeth drives the rod body to rise. When the half circle of the rack of the bevel gear is away from the meshing teeth, the meshing teeth lose the push of the bevel gear, and the fixed spring generates elastic force to pull the rod body to reset. When the rod body resets, it reaches the clapper and hits the filter screen. The dust adhered to the surface of the filter screen is forced to fall off. By setting a dust removal device, the dust on the surface of the filter screen is effectively cleaned, which is convenient for the equipment to dissipate heat, improves the heat dissipation efficiency of the equipment, reduces the situation where the filter screen is blocked and the heat is difficult to discharge, and improves the safety of the equipment.

[0004] The above technology adopts air cooling to dissipate heat. When running, the exposed fan will generate loud noise. In addition, when the working environment temperature is high, the temperature difference between the inside and outside of the motor is small, which will seriously limit the heat exchange effect. For this reason, the utility model provides an auxiliary heat dissipation device for a centrifugal pump to solve the above problems. Utility Model Content

[0005] The utility model provides an auxiliary heat dissipation device for a centrifugal pump, which solves the technical problem that when cooling the centrifugal pump by air cooling, the exposed fan will generate relatively large noise during operation, and when the working environment temperature is high, the temperature difference between the inside and outside of the motor is small, which will seriously limit the heat exchange effect.

[0006] To solve the above technical problems, the utility model provides an auxiliary heat dissipation device for a centrifugal pump, comprising a centrifugal pump fixed base plate, the upper side of the centrifugal pump fixed base plate is fixedly connected to a centrifugal pump body and a heat dissipation casing, a centrifugal pump motor is arranged in the heat dissipation casing, the output shaft of the centrifugal pump motor passes through the heat dissipation casing and is fixedly connected to an impeller in the centrifugal pump body, a heat dissipation centrifugal chamber is arranged on the side of the heat dissipation casing facing the centrifugal pump body, a ventilation channel is arranged between the heat dissipation casing and the heat dissipation centrifugal chamber, a plurality of centrifugal fan blades are equidistantly arranged in the heat dissipation centrifugal chamber and on the outer wall of the output end of the centrifugal pump motor, and an external water cooling component is connected between the heat dissipation casing and the heat dissipation centrifugal chamber.

[0007] Preferably, the external water cooling component includes a heat exchanger shell, a heat exchange cold water pipe is arranged in the heat exchanger shell, and both ends of the heat exchange cold water pipe are arranged outside the heat exchanger shell.

[0008] Preferably, the external water cooling component also includes a guide air duct and a return air duct located on both sides of the heat exchanger shell, wherein the guide air duct is connected to the heat dissipation centrifugal chamber, and the return air duct is connected to the side of the heat dissipation casing away from the centrifugal pump body.

[0009] Preferably, a plurality of isolation plates are fixed to the upper and lower inner walls of the heat exchanger shell. The isolation plates are parallel to each other and together with the heat exchanger shell form a tortuous heat exchange channel.

[0010] Preferably, the isolation plate is provided with adapting circular grooves corresponding to the heat exchange cold water pipes, and the heat exchange cold water pipes are arranged in a serpentine shape and pass through each of the adapting circular grooves in sequence.

[0011] Preferably, a circular cavity is provided in the heat dissipation centrifugal chamber, and the air inlet direction of the guide air duct is tangent to the inner wall of the circular cavity.

[0012] Preferably, two fixing brackets are fixed to the lower side of the centrifugal pump motor, and the bottom ends of the fixing brackets are fixed to the bottom wall of the heat dissipation casing.

[0013] Compared with the related art, the auxiliary heat dissipation device of a centrifugal pump provided by the utility model has the following beneficial effects:

[0014] The utility model discloses an auxiliary heat dissipation device for a centrifugal pump. The output end of the centrifugal pump motor drives the centrifugal fan blades to rotate at a high speed in the heat dissipation centrifugal bin, and can throw the cold air to the guide air duct, so as to form a unidirectional airflow in the heat exchange channel. In this process, cold water is pumped in from one end of the heat exchange cold water pipe and pumped out from the other end of the heat exchange cold water pipe, so as to exchange heat with the unidirectional airflow in the heat exchange channel. The unidirectional airflow after cooling enters the heat dissipation casing from the return air duct, circulates in the gap between the heat dissipation casing and the centrifugal pump motor, exchanges heat with the heat dissipation plates arranged around the centrifugal pump motor, and heats up, so as to absorb the heat from the operation of the centrifugal pump motor, and avoid the overheating of the centrifugal pump motor.

[0015] The utility model discloses an auxiliary heat dissipation device for a centrifugal pump. Compared with a traditional water-cooled heat dissipation centrifugal pump, the utility model adopts a combination of air-cooled heat dissipation and water-cooled heat dissipation, which makes up for the shortcoming that the contact area between the water-cooling coil and the centrifugal pump motor is small. A nearly annular heat exchange space is formed between the centrifugal pump motor and the heat dissipation casing, and the cold air is in full contact with the heat dissipation plates arranged around the centrifugal pump motor, which effectively improves the heat dissipation efficiency of the centrifugal pump.

[0016] The utility model discloses an auxiliary heat dissipation device for a centrifugal pump. Compared with a traditional air-cooled heat dissipation centrifugal pump, the centrifugal fan is built into a closed channel composed of a heat dissipation casing, a heat dissipation centrifugal chamber and an external water cooling component. The closed channel can effectively isolate noise during operation and has the advantage of low operating noise.

[0017] The utility model discloses an auxiliary heat dissipation device for a centrifugal pump. The heat exchange cold water pipe is arranged in a serpentine shape, and the heat exchange channel is tortuous, which can effectively prolong the heat exchange time and heat exchange area, improve the heat exchange effect between the unidirectional airflow and the cold water, and the temperature difference between the unidirectional airflow that cools the cold water and the centrifugal pump motor is larger, which further improves the cooling performance, and the heat exchange effect is not affected by the ambient temperature;

[0018] The utility model discloses an auxiliary heat dissipation device for a centrifugal pump. The greater the operating power of the centrifugal pump, the more serious the heat generation. The output end of the centrifugal pump motor is used to drive the centrifugal fan blades to rotate at high speed in the heat dissipation centrifugal bin. The power output by the centrifugal pump can be used to dissipate heat without adding additional power equipment, thus saving preparation costs. Moreover, the heat dissipation effect can change in real time with the heat generation degree of the centrifugal pump motor, thus further saving electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a side structural diagram of an auxiliary heat dissipation device for a centrifugal pump of the utility model;

[0020] Figure 2 This is a top view of the structure of an auxiliary heat dissipation device for a centrifugal pump of the utility model;

[0021] Figure 3This is an internal structural diagram of a heat exchanger housing in an auxiliary heat dissipation device of a centrifugal pump of the utility model;

[0022] Figure 4 The utility model is an auxiliary heat dissipation device for a centrifugal pump. Figure 2 Structural cross-sectional view along the AA direction;

[0023] Figure 5 It is a side cross-sectional view of a heat dissipation casing in an auxiliary heat dissipation device of a centrifugal pump according to the utility model;

[0024] Figure 6 The utility model is a partial structural diagram of an isolation plate in an auxiliary heat dissipation device of a centrifugal pump.

[0025] Numbers in the figure: 1. Centrifugal pump fixed base plate; 2. Centrifugal pump body; 3. Heat dissipation casing; 4. Heat dissipation centrifugal compartment; 5. Centrifugal pump motor; 51. Centrifugal fan blades; 52. Fixed bracket; 6. External water cooling component; 61. Heat exchanger shell; 62. Heat exchange cold water pipe; 63. Guide air duct; 64. Return air duct; 65. Isolation plate; 66. Adapter circular groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] Example: By Figure 1-6 The utility model provides an auxiliary heat dissipation device for a centrifugal pump, comprising a centrifugal pump fixing base plate 1, wherein positioning holes are provided at the four corners of the centrifugal pump fixing base plate 1;

[0028] Furthermore, a centrifugal pump body 2 and a heat sink casing 3 are fixedly connected to the upper side of the centrifugal pump fixed base plate 1, a centrifugal pump motor 5 is arranged in the heat sink casing 3, and an output shaft of the centrifugal pump motor 5 passes through the heat sink casing 3 and is fixedly connected to an impeller in the centrifugal pump body 2;

[0029] Specifically, an impeller is rotatably connected between the inner walls on both sides of the centrifugal pump body 2, and a fluid inlet and a fluid outlet are provided on the centrifugal pump body 2.

[0030] Further, a heat dissipation centrifugal chamber 4 is provided on the side of the heat dissipation casing 3 facing the centrifugal pump body 2, a ventilation channel is provided between the heat dissipation casing 3 and the heat dissipation centrifugal chamber 4, a plurality of centrifugal blades 51 are equidistantly provided on the outer wall of the output end of the centrifugal pump motor 5 in the heat dissipation centrifugal chamber 4, a circular cavity is provided in the heat dissipation centrifugal chamber 4, and the air inlet direction of the guide air duct 63 is tangent to the inner wall of the circular cavity;

[0031] Specifically, the centrifugal pump motor 5 is powered on and its output end can drive the impeller in the centrifugal pump body 2 to centrifugal output. At the same time, the output end of the centrifugal pump motor 5 drives the centrifugal fan blades 51 to rotate at high speed in the heat dissipation centrifugal chamber 4, which can throw the cold air into the guide air duct 63, forming a unidirectional airflow in the heat exchange channel.

[0032] Furthermore, two fixing brackets 52 are fixed to the lower side of the centrifugal pump motor 5, and the bottom ends of the fixing brackets 52 are fixed to the bottom wall of the heat dissipation housing 3;

[0033] Specifically, the fixing bracket 52 can raise the height of the centrifugal pump motor 5, so that a nearly annular gap is formed between the centrifugal pump motor 5 and the heat dissipation casing 3, which is beneficial to increase the heat exchange area.

[0034] Furthermore, an external water cooling assembly 6 is connected between the heat dissipation housing 3 and the heat dissipation centrifugal chamber 4, and the external water cooling assembly 6 includes a heat exchanger housing 61, and a heat exchange cold water pipe 62 is arranged in the heat exchanger housing 61, and both ends of the heat exchange cold water pipe 62 are arranged outside the heat exchanger housing 61;

[0035] Specifically, the heat exchange cold water pipe 62 can be made of stainless steel, which has a long service life and good thermal conductivity.

[0036] Furthermore, the external water cooling assembly 6 further includes a guide air duct 63 and a return air duct 64 located on both sides of the heat exchanger housing 61, wherein the guide air duct 63 is connected to the heat dissipation centrifugal compartment 4, and the return air duct 64 is connected to the side of the heat dissipation housing 3 away from the centrifugal pump body 2;

[0037] Specifically, the guide air duct 63 and the return air duct 64 are respectively located at diagonal positions of the heat exchanger shell 61, which is conducive to the unidirectional airflow to fully pass through various areas in the heat exchanger shell 61 to ensure the heat exchange effect. On the other hand, the outer wall of the heat exchanger shell 61 is covered with thermal insulation cotton to reduce cold energy loss.

[0038] Furthermore, a plurality of isolation plates 65 are fixed to the upper and lower inner walls of the heat exchanger shell 61. The isolation plates 65 are parallel to each other and together with the heat exchanger shell 61 form a tortuous heat exchange channel.

[0039] Specifically, a gap is formed between the right end of the lower isolation plate 65 and the heat exchanger shell 61, and a gap is formed between the left end of the upper isolation plate 65 and the heat exchanger shell 61. Similarly, the unidirectional airflow can flow in a zigzag manner in the heat exchanger shell 61, effectively extending the heat exchange time and area and improving the heat exchange effect.

[0040] Furthermore, the isolation plate 65 is provided with matching circular grooves 66 corresponding to the heat exchange cold water pipes 62, and the heat exchange cold water pipes 62 are arranged in a serpentine shape and pass through each matching circular groove 66 in sequence;

[0041] Specifically, the serpentine-arranged heat exchange cold water pipes 62 can effectively extend the heat exchange time and heat exchange area, and improve the heat exchange effect.

[0042] Working principle: When using this device, the centrifugal pump motor 5 is powered on and running, and its output end can drive the impeller in the centrifugal pump body 2 to centrifugal output. At the same time, the output end of the centrifugal pump motor 5 drives the centrifugal fan blades 51 to rotate at high speed in the heat dissipation centrifugal chamber 4, which can throw the cold air to the guide air duct 63, forming a unidirectional airflow in the heat exchange channel. In this process, cold water is pumped in from one end of the heat exchange cold water pipe 62 and pumped out from the other end of the heat exchange cold water pipe 62, which can exchange heat with the unidirectional airflow in the heat exchange channel. The heat exchange cold water pipe 62 is arranged in a serpentine shape, and the heat exchange channel is tortuous. It can effectively extend the heat exchange time and heat exchange area and improve the heat exchange effect. The one-way airflow after cooling enters the heat dissipation casing 3 from the return air duct 64, circulates in the gap between the heat dissipation casing 3 and the centrifugal pump motor 5, and exchanges heat with the heat dissipation plates arranged around the centrifugal pump motor 5 to heat up, which can absorb the heat of the centrifugal pump motor 5 and avoid overheating of the centrifugal pump motor 5. The one-way airflow after heating re-enters the heat dissipation centrifugal bin 4 from the ventilation channel and is centrifugally thrown out, which can realize circulating cooling, with low operating noise, and is not affected by the working environment temperature, and has stable heat dissipation performance.

Claims

1. An auxiliary heat dissipation device for a centrifugal pump, comprising a centrifugal pump fixed base plate (1), a centrifugal pump body (2) and a heat dissipation casing (3) being fixedly connected to the upper side of the centrifugal pump fixed base plate (1), a centrifugal pump motor (5) being arranged in the heat dissipation casing (3), an output shaft of the centrifugal pump motor (5) passing through the heat dissipation casing (3) and fixedly connected to an impeller in the centrifugal pump body (2), characterized in that: A heat dissipation centrifugal chamber (4) is arranged on the side of the heat dissipation casing (3) facing the centrifugal pump body (2), a ventilation channel is arranged between the heat dissipation casing (3) and the heat dissipation centrifugal chamber (4), a plurality of centrifugal blades (51) are arranged at equal intervals in the heat dissipation centrifugal chamber (4) and on the outer wall of the output end of the centrifugal pump motor (5), and an external water cooling component (6) is connected between the heat dissipation casing (3) and the heat dissipation centrifugal chamber (4).

2. The auxiliary heat dissipation device of a centrifugal pump according to claim 1, characterized in that: The external water cooling component (6) comprises a heat exchanger shell (61), a heat exchange cold water pipe (62) is arranged inside the heat exchanger shell (61), and both ends of the heat exchange cold water pipe (62) pass through the heat exchanger shell (61).

3. The auxiliary heat dissipation device of a centrifugal pump according to claim 2, characterized in that: The external water cooling assembly (6) further comprises a guide air duct (63) and a return air duct (64) located on both sides of the heat exchanger housing (61), wherein the guide air duct (63) is connected to the heat dissipation centrifugal chamber (4), and the return air duct (64) is connected to a side of the heat dissipation housing (3) away from the centrifugal pump body (2).

4. The auxiliary heat dissipation device for a centrifugal pump according to claim 3, characterized in that: A plurality of isolation plates (65) are fixed to the upper and lower inner walls of the heat exchanger shell (61); the isolation plates (65) are parallel to each other and together with the heat exchanger shell (61) form a tortuous heat exchange channel.

5. The auxiliary heat dissipation device for a centrifugal pump according to claim 4, characterized in that: The isolation plate (65) is provided with matching circular grooves (66) corresponding to the heat exchange cold water pipes (62). The heat exchange cold water pipes (62) are arranged in a serpentine shape and pass through each matching circular groove (66) in sequence.

6. The auxiliary heat dissipation device for a centrifugal pump according to claim 3, characterized in that: A circular cavity is provided in the heat dissipation centrifugal chamber (4), and the air intake direction of the guide air duct (63) is tangent to the inner wall of the circular cavity.

7. The auxiliary heat dissipation device for a centrifugal pump according to claim 1, characterized in that: Two fixing brackets (52) are fixed on the lower side of the centrifugal pump motor (5), and the bottom ends of the fixing brackets (52) are fixed on the bottom wall of the heat dissipation casing (3).

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