Double-pump-head four-channel liquid cooling centrifugal pump and using method thereof

Abstract

The invention provides a double-pump-head four-channel liquid cooling centrifugal pump and a using method thereof.The double-pump-head four-channel liquid cooling centrifugal pump comprises a machine shell, a water pump support is arranged below the machine shell, and the pump can cover wider flow and lift ranges through double impellers and four channels and is suitable for various application scenes. The connection mode is flexible, various application requirements can be met, and the use flexibility is improved. The multiplication of flow or lift is realized under the same power, and the efficiency and the performance of the pump are improved. The four-way water pump can meet the operation requirements of two water ways at the same time, is suitable for the scene where multiple systems need to be supplied at the same time, and when the four-way water pump is used in cooperation with a four-way valve, the flow lift range can be widened to twice that of a common water pump, energy consumption is reduced, and operation cost is reduced. Heat of the pump body motor is taken away through medium liquid, the temperature is lowered, and the service life is prolonged. The pump has wide application prospects in the fields of industry, agriculture, buildings and the like, and the application scene and the application range of the pump are widened.

Description

Technical Field

[0001] The present invention relates to the field of centrifugal pumps, and in particular to a dual-pump-head four-channel liquid-cooled centrifugal pump and a use method thereof. Background Art

[0002] In many fields such as industry, agriculture, and construction, centrifugal pumps play an important role as a commonly used fluid conveying equipment. The centrifugal pump proposed in the Chinese invention patent application number: CN201921681159.9 includes a motor, a pump body, and a valve body. The motor is connected to the pump shaft in the pump body. An impeller is installed at one end of the pump shaft. The inner side of the impeller is provided with a static ring and a dynamic ring in sequence. The outer side of the impeller is provided with a pump casing and a connecting seat. The connecting seat and the motor are fixed by bolts. The pump body is connected to the valve body through a first optical joint. The valve body is connected to a second optical joint. A cylinder is provided in the valve body. A sealing plate is provided at the lower port of the cylinder. The valve body is connected to the first optical joint through a first pipe nut. The valve body is connected to the second optical joint through a second pipe nut. An O-ring is provided between the pump casing and the connecting seat. The centrifugal pump has a simple structure, a scientific and reasonable design, a more balanced and smooth operation of the impeller, and a good end face sealing effect.

[0003] Traditional centrifugal pumps have some limitations in practical applications. Traditional centrifugal pumps often adopt a single impeller design, which leads to a relatively narrow range of flow and head, making it difficult to meet the needs of diverse application scenarios. In some situations where a larger flow or head is required, traditional centrifugal pumps may not be able to meet the requirements, limiting their scope of application. In addition, the connection method of traditional centrifugal pumps is relatively simple and lacks flexibility, and cannot adapt well to different application requirements. In actual use, it may cause inconvenience to users due to the limitations of the connection method. In terms of efficiency and performance, traditional centrifugal pumps often find it difficult to achieve a significant increase in flow or head at the same power, resulting in low energy utilization and high operating costs.

[0004] Traditional centrifugal pumps are usually difficult to meet the needs of multiple waterway operations at the same time, and cannot provide effective support for scenarios that require simultaneous supply of multiple systems. Moreover, when used in conjunction with other components, traditional centrifugal pumps have limited expansion capabilities in terms of flow and head range, and cannot fully utilize the performance of the system. The performance range of traditional centrifugal pumps is also relatively narrow, making it difficult to adapt to complex and changing working conditions and requirements, limiting their application in some special occasions.

[0005] Structurally, the structure of traditional centrifugal pumps is not compact enough and occupies a large area, which brings certain difficulties to installation and integration. In terms of maintenance, traditional centrifugal pumps are difficult to maintain and costly, which increases the user's use cost and maintenance burden. At the same time, traditional centrifugal pumps are insufficient in heat dissipation, which easily leads to excessive temperature of the pump motor and affects the service life. Therefore, we have made improvements to this and proposed a dual-pump head four-channel liquid-cooled centrifugal pump and its use method. Summary of the invention

[0006] The purpose of the present invention is to address the problems raised by the existing background technology. In order to achieve the above invention purpose, the present invention provides the following technical solutions: a dual-pump head four-channel liquid-cooled centrifugal pump, comprising a casing, a water pump bracket is arranged below the casing, the water pump bracket is provided with a bracket fixing hole, a heat sink is arranged in an annular array on the outer surface of the casing, a motor stator is arranged inside the casing, the motor stator is provided with a stator inner hole, a motor rotor is arranged inside the stator inner hole of the motor stator, bearing sleeves are arranged at both ends of the motor rotor, a shielding flange is arranged on the left side of the bearing sleeve, a first impeller is arranged on the left side of the shielding flange, a first pump head is arranged on the left side of the first impeller, a shielding sleeve is arranged on the right side of the motor stator, a shielding sleeve mounting shaft is arranged on the shielding sleeve, a second impeller is arranged on the right side of the shielding sleeve, and a second pump head is arranged on the right side of the second impeller.

[0007] As a preferred technical solution of the present invention, a first chamber is arranged in the first pump head, the first impeller is arranged inside the first chamber, the first impeller is provided with a first impeller shaft, and the first impeller shaft is inserted into the through hole of the shielding flange.

[0008] As a preferred technical solution of the present invention, a second chamber is arranged in the second pump head, the second impeller is arranged inside the second chamber, the second impeller is provided with a second impeller shaft, and the second impeller shaft is inserted into the center hole of the shielding sleeve.

[0009] As a preferred technical solution of the present invention, a thrust plate is provided on the second impeller.

[0010] As a preferred technical solution of the present invention, the first pump head and the second pump head are connected to the casing by screws.

[0011] As a preferred technical solution of the present invention, a waterproof connector hole is provided on the housing, and a waterproof connector is inserted into the waterproof connector hole.

[0012] As a preferred technical solution of the present invention, the motor rotor is connected to the shaft.

[0013] As a preferred technical solution of the present invention, a first channel tube is arranged above the first pump head, a second channel tube is arranged on the side of the first pump head, a third channel tube is arranged above the second pump head, and a fourth channel tube is arranged on the side of the second pump head.

[0014] A method for using a dual-pump head four-channel liquid-cooled centrifugal pump comprises the following steps: Step 1, installing the centrifugal pump: fixing the water pump bracket at the installation position through the bracket fixing hole; installing the motor stator inside the housing; installing the motor rotor in the stator inner hole of the motor stator, and ensuring that the bearing sleeves at both ends are installed in place;

[0015] Install the shielding flange on the left side of the bearing sleeve, then install the first impeller in the first chamber on the left side of the shielding flange, insert the first impeller shaft into the through hole of the shielding flange; install the shielding sleeve on the right side of the motor stator, install the second impeller in the second chamber on the right side of the shielding sleeve, insert the second impeller shaft into the center hole of the shielding sleeve, and install the thrust plate; connect and fix the first pump head and the second pump head to the casing with screws;

[0016] Step 2, connecting the channel tubes: connecting the first channel tube to the top of the first pump head; connecting the second channel tube to the side of the first pump head; connecting the third channel tube to the top of the second pump head; connecting the fourth channel tube to the side of the second pump head;

[0017] Step 3: Connect the waterproof connector. Insert the waterproof connector into the waterproof connector hole on the housing.

[0018] Step 4, the dual-pump-head four-channel liquid-cooled centrifugal pump starts to operate; after the power is turned on, the motor rotor starts to rotate under the action of the magnetic field generated by the motor stator; the rotation of the motor rotor drives the first impeller and the second impeller to rotate simultaneously through the shaft;

[0019] The first impeller rotates in the first chamber, generating centrifugal force to suck liquid from the inlet of the first pump head; the sucked liquid is transported out through the first channel tube and the second channel tube under the action of the first impeller; at the same time, the second impeller rotates in the second chamber, generating centrifugal force to suck liquid from the inlet of the second pump head; the sucked liquid is transported out through the third channel tube and the fourth channel tube under the action of the second impeller.

[0020] As a preferred technical solution of the present invention, step 5, the dual-pump head four-channel liquid-cooled centrifugal pump runs to dissipate heat. During the entire working process, the heat sink on the outer surface of the casing dissipates the heat generated by the motor stator and the motor rotor. At the same time, the heat generated by the pump body motor is carried away by its own medium liquid, thereby reducing the temperature.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of the present invention: the double impeller and four channels enable the pump to cover a wider range of flow and head and adapt to a variety of application scenarios.

[0022] Flexible connection methods can meet a variety of application requirements, increasing the flexibility of use. The flow rate or head can be doubled at the same power, improving the efficiency and performance of the pump. It can meet the operation requirements of two water routes at the same time, and is suitable for scenarios where multiple systems need to be supplied at the same time, such as new energy liquid cooling systems.

[0023] When used in conjunction with a four-way valve, the flow and head range of the present invention can be expanded to twice that of an ordinary water pump, further expanding the scope of application. It reduces energy consumption and operating costs. It reduces floor space and is easy to install and integrate. It reduces maintenance difficulty and cost.

[0024] The present invention uses its own medium liquid to take away the heat of the pump motor, reduce the temperature and extend the service life. It has broad application prospects in many fields such as industry, agriculture, and construction, and improves the application scenarios and use scope of the pump. It simplifies the pump structure and reduces the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the disassembled structure provided by the present invention;

[0026] Figure 2 A schematic diagram of the three-dimensional structure provided by the present invention;

[0027] Figure 3 A schematic diagram of a local structure provided by the present invention;

[0028] Figure 4 A schematic diagram of the main structure provided by the present invention;

[0029] Figure 5 A schematic diagram of a local structure provided by the present invention;

[0030] Figure 6 A left-side structural schematic diagram provided by the present invention;

[0031] Figure 7 This is a schematic diagram of the casing structure provided by the present invention.

[0032] Indicated in the figure:

[0033] 1. Casing; 101. Heat sink; 2. Water pump bracket; 201. Bracket fixing hole; 3. Motor stator; 301. Inner hole of stator; 4. Motor rotor; 5. Bearing sleeve; 6. Shielding flange; 61. Through hole 7. First impeller; 71. First impeller shaft; 8. First pump head; 81. First chamber; 9. Shielding sleeve; 901. Shielding sleeve mounting shaft; 10. Second impeller; 101. Second impeller shaft; 11. Second pump head; 111. Second chamber; 12. Thrust plate; 13. Screw; 14. Waterproof joint hole; 15. Waterproof joint; 16. Shaft; 17. First channel tube; 18. Second channel tube; 19. Third channel tube; 20. Fourth channel tube. DETAILED DESCRIPTION

[0034] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0035] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other without conflict. It should be noted that similar numbers and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] Example 1: Please refer to Figure 1-Figure 7 A dual-pump-head four-channel liquid-cooled centrifugal pump comprises a casing 1, a water pump bracket 2 is arranged below the casing 1, a motor stator 3 is arranged inside the casing 1, a motor rotor 4 is arranged inside the motor stator 3, bearing sleeves 5 are arranged at both ends of the motor rotor 4, a shielding flange 6 is arranged on the left side of the bearing sleeve 5, a first impeller 7 is arranged on the left side of the shielding flange 6, a first pump head 8 is arranged on the left side of the first impeller 7, a shielding sleeve 9 is arranged on the right side of the motor stator 3, a second impeller 10 is arranged on the right side of the shielding sleeve 9, and a second pump head 11 is arranged on the right side of the second impeller 10.

[0037] The first pump head 8 is provided with a first chamber 81, the first impeller 7 is provided inside the first chamber 81, the first impeller 7 is provided with a first impeller shaft 71, and the first impeller shaft 71 is inserted into the through hole 61 of the shielding flange 6. The second pump head 11 is provided with a second chamber 111, the second impeller 10 is provided inside the second chamber 111, the second impeller 10 is provided with a second impeller shaft 101, and the second impeller shaft 101 is inserted into the center hole of the shielding sleeve 9.

[0038] The second impeller 10 is provided with a thrust plate 12. The first pump head 8 and the second pump head 11 are connected to the casing 1 through screws 13.

[0039] The housing 1 is provided with a waterproof joint hole 14, into which a waterproof joint 15 is inserted. The motor rotor 4 is connected to the shaft 16. A first channel tube 17 is provided above the first pump head 8, a second channel tube 18 is provided on the side of the first pump head 8, a third channel tube 19 is provided above the second pump head 11, and a fourth channel tube 20 is provided on the side of the second pump head 11.

[0040] The working principle of the dual-pump head four-channel liquid-cooled centrifugal pump is as follows: the power of the centrifugal pump comes from the motor rotor 4 inside the motor stator 3, and the motor rotor 4 is connected to the shaft 16, driving the first impeller 7 and the second impeller 10 at both ends to rotate. In the casing 1, on the left side of the motor stator 3, the first impeller 7 is arranged in the first chamber 81 of the first pump head 8, and the first impeller shaft 71 is inserted into the through hole 61 of the shielding flange 6. On the right side of the motor stator 3, the second impeller 10 is arranged in the second chamber 111 of the second pump head 11, and the second impeller shaft 101 is inserted into the central hole of the shielding sleeve 9, and the second impeller 10 is provided with a thrust plate 12.

[0041] When the motor rotor 4 rotates, the first impeller 7 and the second impeller 10 rotate accordingly. The liquid enters the first chamber 81 from the inlet of the first pump head 8, is accelerated and pressurized by the first impeller 7, and then is discharged through the first channel tube 17 above the first pump head 8 and the second channel tube 18 on the side. At the same time, the liquid enters the second chamber 111 from the inlet of the second pump head 11, is also accelerated and pressurized by the second impeller 10, and then is discharged through the third channel tube 19 above the second pump head 11 and the fourth channel tube 20 on the side.

[0042] This dual pump head and four channels enable the centrifugal pump to cover a wider range of flow and head. While maintaining the same power, the flow or head is doubled, improving the efficiency and performance of the pump. It can meet the operating requirements of two waterways at the same time, such as new energy liquid cooling systems. If used in conjunction with a four-way valve, its flow and head range can be further expanded.

[0043] In addition, centrifugal pumps focus on energy efficiency, using their own medium liquid to take away the heat of the pump motor, reducing operating costs. The use of DC variable frequency motors and intelligent drive control can achieve constant power, constant current and constant pressure control, and ultra-wide speed control. The inlet and outlet directions of the pump can be adjusted arbitrarily without affecting performance, and it is easy to use. Its compact structure reduces the footprint and is easy to install and integrate; it is simple to maintain, reducing the difficulty and cost of maintenance; it runs smoothly, reduces vibration and noise, and improves reliability. This dual-pump head four-channel liquid-cooled centrifugal pump has improved performance and efficiency, increased flexibility and convenience through innovation, and has broad application prospects in many fields.

[0044] Embodiment 2: A method for using a dual-pump-head four-channel liquid-cooled centrifugal pump, comprising the following steps: Step 1, installing the centrifugal pump: fix the water pump bracket 2 at the installation position through the bracket fixing hole 201; install the motor stator 3 inside the casing 1; install the motor rotor 4 in the stator inner hole 301 of the motor stator 3, and ensure that the bearing sleeves 5 at both ends are installed in place; install the shielding flange 6 on the left side of the bearing sleeve 5, and then install the first impeller 7 in the first chamber 81 on the left side of the shielding flange 6, so that the first impeller shaft 71 is inserted into the through hole 61 of the shielding flange 6; install the shielding sleeve 9 on the right side of the motor stator 3, install the second impeller 10 in the second chamber 111 on the right side of the shielding sleeve 9, so that the second impeller shaft 101 is inserted into the center hole of the shielding sleeve 9, and install the thrust plate 12; connect and fix the first pump head 8 and the second pump head 11 to the casing 1 by screws 13;

[0045] Step 2, connecting channel tubes: connect the first channel tube 17 to the top of the first pump head 8; connect the second channel tube 18 to the side of the first pump head 8; connect the third channel tube 19 to the top of the second pump head 11; connect the fourth channel tube 20 to the side of the second pump head 11;

[0046] Step 3, connect the waterproof connector; insert the waterproof connector 15 into the waterproof connector hole 14 on the housing 1;

[0047] Step 4, the dual-pump-head four-channel liquid-cooled centrifugal pump starts to operate; after the power is turned on, the motor rotor 4 starts to rotate under the action of the magnetic field generated by the motor stator 3; the rotation of the motor rotor 4 drives the first impeller 7 and the second impeller 10 to rotate simultaneously through the shaft 16;

[0048] The first impeller 7 rotates in the first chamber 81, generating centrifugal force to suck liquid from the inlet of the first pump head 8; the sucked liquid is transported out through the first channel tube 17 and the second channel tube 18 under the action of the first impeller 7; at the same time, the second impeller 10 rotates in the second chamber 111, generating centrifugal force to suck liquid from the inlet of the second pump head 11; the sucked liquid is transported out through the third channel tube 19 and the fourth channel tube 20 under the action of the second impeller 10.

[0049] Step 5: The dual-pump-head four-channel liquid-cooled centrifugal pump operates to dissipate heat. During the entire working process, the heat sink 101 on the outer surface of the casing 1 dissipates the heat generated by the motor stator 3 and the motor rotor 4. At the same time, the heat generated by the pump body motor is taken away by its own medium liquid, thereby reducing the temperature.

[0050] Embodiment 3: A method for using a dual-pump head four-channel liquid-cooled centrifugal pump. This dual-pump head four-channel liquid-cooled centrifugal pump is used in a liquid cooling system of a new energy vehicle. The pump casing 1 is firmly mounted at an appropriate position of the vehicle through the water pump bracket 2 below. The motor stator 3 and the motor rotor 4 operate normally inside the casing 1 to provide power for the operation of the pump. Driven by the motor rotor 4, the first impeller 7 rotates at high speed in the first chamber 81 of the first pump head 8. The first impeller shaft 71 is inserted into the through hole 61 of the shielding flange 6 to ensure the stable operation of the impeller. At the same time, driven by the other end of the motor rotor 4, the second impeller 10 works synchronously in the second chamber 111 of the second pump head 11, the second impeller shaft 101 is inserted into the center hole of the shielding sleeve 9, and the thrust plate 12 on the second impeller 10 effectively balances the axial force 16.

[0051] When the liquid cooling system is working, the coolant enters the first chamber 81 from the inlet of the first pump head 8, and after being accelerated and pressurized by the first impeller 7, flows to different heat dissipation parts of the new energy vehicle through the first channel tube 17 above the first pump head 8 and the second channel tube 18 on the side. At the same time, another part of the coolant enters the second chamber 111 from the inlet of the second pump head 11, is accelerated and pressurized under the action of the second impeller 10, and then passes through the third channel tube 19 above the second pump head 11 and the fourth channel tube 20 on the side to provide coolant for other parts of the vehicle that need to be cooled.

[0052] The dual-impeller four-channel design of the pump enables the flow and head of the coolant to meet the high requirements of the liquid cooling system of new energy vehicles, effectively controlling the temperature of various vehicle components and ensuring the normal operation of the vehicle. Its flexible connection method enables the pump to perfectly match other components of the liquid cooling system. While maintaining the same power, the pump achieves a doubling of the flow or head, improves energy efficiency and reduces operating costs.

[0053] In addition, the pump can meet the operation requirements of two water circuits at the same time, ensuring the simultaneous cooling of multiple parts in the liquid cooling system of new energy vehicles. If used in conjunction with a four-way valve, it can further expand the flow head range and improve the overall performance of the system.

[0054] The pump has a compact structure, which reduces the floor space in the vehicle and is easy to install and integrate. Its simple maintenance reduces the difficulty and cost of maintenance, making vehicle maintenance more convenient. During operation, the pump has low vibration and noise, runs smoothly and reliably, and improves the comfort and reliability of the vehicle. The pump uses its own medium liquid to take away the heat from the pump motor, which reduces the temperature of the pump and extends its service life. The use of DC variable frequency motor and intelligent drive control can achieve constant power, constant current and constant pressure control and ultra-wide speed control. According to the different operating conditions of the vehicle, the flow and pressure of the coolant can be accurately adjusted to ensure the efficient operation of the liquid cooling system.

[0055] The working process of the dual-pump head four-channel liquid-cooled centrifugal pump is as follows: Start the motor: the motor rotor 4 in the motor stator 3 starts to rotate under the action of the current, and the motor rotor 4 is connected to the shaft 16 to provide power for the entire system.

[0056] Impeller rotation: The rotation of the motor rotor 4 drives the first impeller 7 and the second impeller 10 at both ends thereof to rotate.

[0057] Liquid is sucked into the first pump head 8 : the liquid enters the first chamber 81 from the inlet of the first pump head 8 .

[0058] Pressurization by the first impeller 7 : the liquid entering the first chamber 81 is accelerated and pressurized under the action of the first impeller 7 .

[0059] Liquid is output from the first pump head 8: the pressurized liquid is output through the first channel tube 17 above the first pump head 8 and the second channel tube 18 on the side.

[0060] The liquid is sucked into the second pump head 11 : at the same time, the liquid enters the second chamber 111 from the inlet of the second pump head 11 .

[0061] The second impeller 10 pressurizes: the liquid entering the second chamber 111 is also accelerated and pressurized under the action of the second impeller 10 , and the thrust plate 12 on the second impeller 10 plays a role in balancing the axial force of the shaft 16 .

[0062] The liquid is output from the second pump head 11 : the pressurized liquid is output through the third channel tube 19 above the second pump head 11 and the fourth channel tube 20 on the side.

[0063] Heat removal: During operation, the heat generated by the pump motor is removed by the pump's own medium liquid, which reduces the temperature and increases the service life of the pump.

[0064] Operation control: Adopting DC variable frequency motor and intelligent drive control, it can realize constant power, constant current and constant voltage control and ultra-wide speed control, and adjust the operation status of the pump according to actual needs.

[0065] The working principle of the present invention is as follows: the motor rotor 4 in the motor stator 3 starts to rotate under the action of the current, and the motor rotor 4 is connected to the shaft 16 to provide power for the entire system. The rotation of the motor rotor 4 drives the first impeller 7 and the second impeller 10 at both ends thereof to rotate. The liquid enters the first chamber 81 from the inlet of the first pump head 8.

[0066] The liquid entering the first chamber 81 is accelerated and pressurized under the action of the first impeller 7. The pressurized liquid is output through the first channel tube 17 above the first pump head 8 and the second channel tube 18 on the side. At the same time, the liquid enters the second chamber 111 from the inlet of the second pump head 11. The liquid entering the second chamber 111 is also accelerated and pressurized under the action of the second impeller 10, and the thrust plate 12 on the second impeller 10 plays the role of balancing the force of the shaft 16. The pressurized liquid is output through the third channel tube 19 above the second pump head 11 and the fourth channel tube 20 on the side. During the working process, the heat generated by the pump body motor is taken away by its own medium liquid, which reduces the temperature and increases the service life of the pump.

[0067] In the whole working process, the centrifugal pump realizes the expansion of flow and head through double impellers and four channels, and can meet the operation requirements of two waterways at the same time. It has compact structure, simple maintenance, stable operation, and the inlet and outlet directions can be adjusted arbitrarily without affecting the performance. It has the advantages of high efficiency, energy saving, and convenient use, and can be widely used in many fields such as industry, agriculture, and construction.

[0068] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A dual-pump head four-channel liquid-cooled centrifugal pump, comprising a casing (1), a water pump bracket (2) being arranged below the casing (1), characterized in that: The water pump bracket (2) is provided with a bracket fixing hole (201); the outer surface of the housing (1) is provided with a heat sink (101) in an annular array; a motor stator (3) is provided inside the housing (1); the motor stator (3) is provided with a stator inner hole (301); a motor rotor (4) is provided inside the stator inner hole (301) of the motor stator (3); bearing sleeves (5) are provided at both ends of the motor rotor (4); a shielding flange (6) is provided on the left side of the bearing sleeve (5); a first impeller (7) is provided on the left side of the shielding flange (6); a first pump head (8) is provided on the left side of the first impeller (7); a shielding sleeve (9) is provided on the right side of the motor stator (3); a shielding sleeve mounting shaft (901) is provided on the shielding sleeve (9); a second impeller (10) is provided on the right side of the shielding sleeve (9); and a second pump head (11) is provided on the right side of the second impeller (10).

2. A dual-pump head four-channel liquid-cooled centrifugal pump according to claim 1, characterized in that: The first pump head (8) is provided with a first chamber (81), the first impeller (7) is arranged inside the first chamber (81), the first impeller (7) is provided with a first impeller shaft (71), and the first impeller shaft (71) is inserted into the through hole (61) of the shielding flange (6).

3. A dual-pump-head four-channel liquid-cooled centrifugal pump according to claim 2, characterized in that: The second pump head (11) is provided with a second chamber (111), the second impeller (10) is arranged inside the second chamber (111), the second impeller (10) is provided with a second impeller shaft (101), and the second impeller shaft (101) is inserted into the center hole of the shielding sleeve (9).

4. A dual-pump-head four-channel liquid-cooled centrifugal pump according to claim 3, characterized in that: The second impeller (10) is provided with a thrust piece (12).

5. A dual-pump-head four-channel liquid-cooled centrifugal pump according to claim 4, characterized in that: The first pump head (8) and the second pump head (11) are connected to the casing (1) via screws (13).

6. A dual-pump-head four-channel liquid-cooled centrifugal pump according to claim 5, characterized in that: The housing (1) is provided with a waterproof joint hole (14), and a waterproof joint (15) is inserted into the waterproof joint hole (14).

7. A dual-pump-head four-channel liquid-cooled centrifugal pump according to claim 6, characterized in that: The motor rotor (4) is connected to a shaft (16).

8. A dual-pump-head four-channel liquid-cooled centrifugal pump according to claim 7, characterized in that: A first channel tube (17) is arranged above the first pump head (8), a second channel tube (18) is arranged on the side of the first pump head (8), a third channel tube (19) is arranged above the second pump head (11), and a fourth channel tube (20) is arranged on the side of the second pump head (11).

9. A method for using a dual-pump head four-channel liquid-cooled centrifugal pump, characterized in that: The following steps are involved: Step 1, installing the centrifugal pump: fix the water pump bracket (2) at the installation position through the bracket fixing hole (201); install the motor stator (3) inside the housing (1); install the motor rotor (4) in the stator inner hole (301) of the motor stator (3), and ensure that the bearing sleeves (5) at both ends are installed in place; A shielding flange (6) is installed on the left side of the bearing sleeve (5), and then the first impeller (7) is installed in the first chamber (81) on the left side of the shielding flange (6), so that the first impeller shaft (71) is inserted into the through hole (61) of the shielding flange (6); a shielding sleeve (9) is installed on the right side of the motor stator (3), and the second impeller (10) is installed in the second chamber (111) on the right side of the shielding sleeve (9), so that the second impeller shaft (101) is inserted into the center hole of the shielding sleeve (9), and a thrust plate (12) is installed; the first pump head (8) and the second pump head (11) are connected and fixed to the casing (1) by screws (13); Step 2, connecting the channel tubes: connecting the first channel tube (17) to the top of the first pump head (8); connecting the second channel tube (18) to the side of the first pump head (8); connecting the third channel tube (19) to the top of the second pump head (11); connecting the fourth channel tube (20) to the side of the second pump head (11); Step 3, connecting the waterproof connector; inserting the waterproof connector (15) into the waterproof connector hole (14) on the housing (1); Step 4, the dual-pump-head four-channel liquid-cooled centrifugal pump starts to operate; after the power is turned on, the motor rotor (4) starts to rotate under the action of the magnetic field generated by the motor stator (3); the rotation of the motor rotor (4) drives the first impeller (7) and the second impeller (10) to rotate simultaneously through the shaft (16); The first impeller (7) rotates in the first chamber (81) to generate centrifugal force, sucking liquid from the inlet of the first pump head (8); the sucked liquid is transported out through the first channel tube (17) and the second channel tube (18) under the action of the first impeller (7); at the same time, the second impeller (10) rotates in the second chamber (111) to generate centrifugal force, sucking liquid from the inlet of the second pump head (11); the sucked liquid is transported out through the third channel tube (19) and the fourth channel tube (20) under the action of the second impeller (10).

10. The method for using a dual-pump-head four-channel liquid-cooled centrifugal pump according to claim 9, characterized in that: Step 5: The dual-pump-head four-channel liquid-cooled centrifugal pump operates to dissipate heat. During the entire operation process, the heat sink (101) on the outer surface of the housing (1) dissipates heat generated by the motor stator (3) and the motor rotor (4).

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