Filtering and cooling system and filtering and cooling method for magnetic suspension vacuum pump

Abstract

The invention belongs to the technical field of magnetic suspension vacuum pumps, and particularly relates to a magnetic suspension vacuum pump filtering and cooling system and a filtering and cooling method.The magnetic suspension vacuum pump filtering and cooling system comprises a filtering mechanism, a magnetic suspension vacuum pump, a heat exchanger, a first connecting pipe, a second connecting pipe, a third connecting pipe and a controller; the filtering mechanism and the magnetic suspension vacuum pump are communicated through a first connecting pipe, the magnetic suspension vacuum pump and the heat exchanger are communicated through a second connecting pipe, the filtering mechanism and the heat exchanger are communicated through a third connecting pipe, the controller is installed on the magnetic suspension vacuum pump, and the magnetic suspension vacuum pump and the heat exchanger are both in communication connection with the controller. Compared with the prior art, the cooling device has the advantages and positive effects that effective filtering is achieved through the filtering mechanism, adverse effects on operation of the magnetic suspension motor caused by suction of unclean air are avoided, and cooling of recycled air is achieved through the heat exchanger.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic levitation vacuum pumps, and in particular relates to a filtering and cooling system and a filtering and cooling method for a magnetic levitation vacuum pump. Background Art

[0002] The application environment of magnetic levitation vacuum pumps is relatively harsh, especially for vacuum pumps for papermaking and dehydration. There are a lot of paper scraps on site in these two applications. Secondly, the air humidity is also very high and the environment is very harsh, which poses a great challenge to the cleaning of magnetic levitation motors.

[0003] At present, the cooling of magnetic levitation motors usually adopts the form of a tail end cooling impeller. The rotation of the main shaft drives the tail end cooling impeller to rotate, thereby realizing the cooling of the rotor part of the magnetic levitation motor. If the overall sealing is not handled properly, the tail end cooling impeller is easy to inhale unclean air, thereby affecting the stability of the magnetic levitation motor.

[0004] Therefore, there is an urgent need for a magnetic levitation vacuum pump filtering and cooling system and a filtering and cooling method that can prevent the inhalation of unclean air from having adverse effects on the operation of the magnetic levitation motor. Summary of the invention

[0005] In view of the above problems, the present invention provides a magnetic levitation vacuum pump filtering and cooling system and a filtering and cooling method.

[0006] In order to achieve the above-mentioned object, the technical solution adopted by the present invention is: a magnetic levitation vacuum pump filtering and cooling system, comprising a filtering mechanism, a magnetic levitation vacuum pump, a heat exchanger, a connecting pipe 1, a connecting pipe 2, a connecting pipe 3 and a controller, wherein the filtering mechanism and the magnetic levitation vacuum pump are connected through the connecting pipe 1, the magnetic levitation vacuum pump and the heat exchanger are connected through the connecting pipe 2, and the filtering mechanism and the heat exchanger are connected through the connecting pipe 3; The controller is installed on the magnetic levitation vacuum pump, and the magnetic levitation vacuum pump and the heat exchanger are both communicatively connected with the controller.

[0007] Preferably, the filter mechanism comprises a filter plate, a filter mounting housing, a partition, a filter and a shutter mechanism, the filter plate and the filter mounting housing are detachably connected, and the filter mounting housing is detachably connected to the shutter mechanism; The partition is installed in a cavity surrounded by the filter plate and the filter installation housing. The length direction of the partition is vertical. There are two partitions. The filter and the partition are detachably connected.

[0008] Preferably, the filtering mechanism also includes an exhaust interface part and an air intake interface part, the exhaust interface part is connected with connecting pipe one, and the air intake interface part is connected with connecting pipe three, the end of the exhaust interface part away from connecting pipe one is located in a cavity surrounded by the filter plate, the filter mounting cover and two partitions, and the end of the air intake interface part away from connecting pipe three is located in a cavity surrounded by the filter plate, the filter mounting cover and two partitions.

[0009] Preferably, the filtering mechanism also includes a cylinder sealing plate assembly and a sealing support plate assembly, the cylinder sealing plate assembly includes a vertical cylinder and a sealing plate, the sealing support plate assembly includes a first seal and a second seal, the lower end of the vertical cylinder and the upper end of the sealing plate are detachably connected, the upper end of the vertical cylinder is detachably connected to the filter mounting cover, the vertical cylinder is vertical in length direction, the first seal and the second seal are both fixedly connected to the partition, the first seal and the second seal are both fitted with the sealing plate, the vertical cylinder is communicatively connected to the controller, the first seal is located above the filter, and the second seal is located below the filter.

[0010] Preferably, the filtering mechanism further comprises sealing strip 1 and sealing strip 2, sealing grooves are provided on the first sealing member and the second sealing member, the first sealing member is fitted with sealing strip 1 via the sealing groove, the second sealing member is fitted with sealing strip 2 via the sealing groove, the upper ends of sealing strip 1 and sealing strip 2 are both fitted with the sealing plate, and the length directions of sealing strip 1 and sealing strip 2 are both horizontal.

[0011] Preferably, the filtering mechanism also includes a partition filter plate, the plane where the partition filter plate is located is horizontal, the partition filter plate is detachably connected to the second sealing member, the partition filter plate is in contact with the filter plate and the filter mounting cover, the exhaust interface portion is located above the partition filter plate, and the intake interface portion is located below the partition filter plate.

[0012] Preferably, the shutter mechanism comprises a first shutter and a second shutter, the plane where the first shutter is located is perpendicular to the plane where the second shutter is located, and the first shutter and the second shutter are both detachably connected to the filter mounting cover.

[0013] Preferably, the magnetic levitation vacuum pump includes a vacuum pump body, an impeller suction port and an impeller exhaust port, the vacuum pump body is connected to the impeller suction port and the impeller exhaust port respectively, the end of the impeller suction port away from the vacuum pump body is connected to connecting pipe one, and the end of the impeller exhaust port away from the vacuum pump body is connected to connecting pipe two.

[0014] Preferably, a water pump is further included, the heat exchanger includes a heat exchanger body, a heat engine exhaust port, a heat engine air inlet, a cooling water inlet and a cooling water outlet, the heat engine exhaust port, the heat engine air inlet, the cooling water inlet and the cooling water outlet are all connected to the heat exchanger body, the water pump is detachably connected to the heat exchanger body, and the water pump is communicatively connected to the controller; The end of the heat engine exhaust port away from the heat exchanger body is connected to the connecting pipe three, the end of the heat engine air inlet port away from the heat exchanger body is connected to the connecting pipe two, the end of the cooling water inlet port away from the heat exchanger body is connected to the water pump, and the end of the cooling water outlet port away from the heat exchanger body is connected to the water pump.

[0015] A magnetic levitation vacuum pump filtering and cooling method, using the magnetic levitation vacuum pump filtering and cooling system, comprises the following steps: Step 1: The controller controls the magnetic levitation vacuum pump to start, and the main shaft of the magnetic levitation vacuum pump drives the cooling impeller at the tail end of the motor to rotate. The cooling impeller at the tail end of the motor starts to inhale air, and the air passes through the shutter mechanism and enters the cavity surrounded by the filter installation cover and the filter plate to achieve preliminary filtration; Step 2: The air after the initial filtration is filtered through the filter for secondary filtration. The secondary filtered air is sucked in from the exhaust interface and then enters the magnetic levitation vacuum pump through the connecting pipe 1; Step 3: After the cooling gas flows through the magnetic levitation vacuum pump, the temperature rises, and the high-temperature gas enters the heat exchanger through the connecting pipe 2 and the temperature drops, thereby achieving cooling; Step 4: The cooled air returns to the filter mechanism through the connecting pipe 3 and the air intake interface in sequence; Step 5: The controller controls the vertical cylinder to move downward, the sealing plate seals the filter, and the cooled air is sucked in from the exhaust interface, and then passes through the connecting pipe 1 and enters the magnetic levitation vacuum pump again, completing the first cycle. The subsequent cycles do not need to inhale a large amount of air from the environment, and rely on the suction interface and the exhaust interface to form a closed internal cycle.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are: (1) The filter mechanism and the magnetic levitation vacuum pump are connected through a connecting pipe. The filter mechanism achieves effective filtration to prevent the inhalation of unclean air from causing adverse effects on the operation of the magnetic levitation motor, and the heat exchanger achieves cooling of the recycled air; (2) After the first cycle is completed, the vertical cylinder is controlled by the controller to move downward, and the sealing plate seals the filter. In subsequent cycles, there is no need to inhale a large amount of air from the environment. Instead, a closed internal cycle is formed by suction and exhaust through the suction interface and the exhaust interface, thereby reducing the working time of the filter and increasing the actual service life of the filter. (3) The sealing plate seals the filter, and the air intake interface and the exhaust interface are located in the chamber surrounded by the sealing plate, the filter plate and the filter mounting cover, so as to achieve the sealing and temperature isolation and avoid excessive heat dissipation at low temperatures; (4) The second sealing member is fitted with the sealing strip 2 through the sealing groove, and the upper ends of the sealing strip 1 and the sealing strip 2 are both fitted with the sealing plate. The sealing strip 2 and the sealing strip 1 ensure a tight seal and a good sealing effect. The cooling gas cooled by the heat exchanger dissipates less heat and does not need to absorb air from the outside, thereby ensuring the cleanliness of the air. (5) The plane where the first louver is located is perpendicular to the plane where the second louver is located, so that air can be absorbed from different directions, the air intake is more uniform, and the interference of external wind direction is avoided; (6) The partition filter plate is fitted with the filter plate and the filter mounting cover. The partition filter plate is located between the exhaust interface and the intake interface. The partition filter plate provides further safety protection to prevent impurities that accidentally enter the intake interface from re-entering the intake interface after being output from the exhaust interface, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the following is a brief introduction to the drawings required for describing the embodiment: Figure 1 This is the main view of the magnetic levitation vacuum pump filtration cooling system; Figure 2 A three-dimensional view of the filter mechanism of the magnetic levitation vacuum pump filter cooling system; Figure 3 It is a side view of the filter mechanism of the magnetic levitation vacuum pump filter cooling system; Figure 4 It is a cross-sectional view of the filter mechanism of the magnetic levitation vacuum pump filter cooling system; Figure 5 for Figure 4 A local enlarged schematic diagram of the middle A; Figure 6 Schematic diagram of the cylinder sealing plate assembly and filter installation cover of the magnetic levitation vacuum pump filter cooling system Figure 1 ; Figure 7 Schematic diagram of the cylinder sealing plate assembly and filter installation cover of the magnetic levitation vacuum pump filter cooling system Figure 2 ; Figure 8 It is a three-dimensional schematic diagram of the cylinder sealing plate assembly of the magnetic levitation vacuum pump filter cooling system; Fig. 9 A front view of a magnetic levitation vacuum pump of a magnetic levitation vacuum pump filtering and cooling system; Fig.10 This is the front view of the heat exchanger of the magnetic levitation vacuum pump filter cooling system.

[0018] Reference numerals: 1. Filter mechanism, 11. Filter plate, 12. Filter mounting housing, 13. Partition plate, 14. Filter, 15. Exhaust interface, 16. Intake interface, 17. Separation filter plate; 2. Magnetic levitation vacuum pump, 21. Vacuum pump body, 22. Impeller suction port, 23. Impeller exhaust port; 3. heat exchanger, 31. heat exchanger body, 32. heat engine exhaust port, 33. heat engine air inlet, 34. cooling water inlet, 35. cooling water outlet; 4. shutter mechanism, 41. first shutter, 42. second shutter; 5. Connecting pipe 1; 6. Cylinder sealing plate assembly, 61. Vertical cylinder, 62. Sealing plate; 7. Connecting pipe 2; 8. Sealing member support plate assembly, 81. First sealing member, 82. Second sealing member, 83. Sealing groove, 84. Reinforcing rib; 9. Connecting pipe three. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] Example 1 Combine the following Figures 1 to 10 Specifically describe the magnetic levitation vacuum pump filtering and cooling system and filtering and cooling method, such as Figure 1 As shown, a magnetic levitation vacuum pump filtering and cooling system includes a filtering mechanism 1, a magnetic levitation vacuum pump 2, a heat exchanger 3, a connecting pipe 1 5, a connecting pipe 2 7, a connecting pipe 3 9 and a controller. The filtering mechanism 1 and the magnetic levitation vacuum pump 2 are connected through the connecting pipe 1 5, the magnetic levitation vacuum pump 2 and the heat exchanger 3 are connected through the connecting pipe 2 7, and the filtering mechanism 1 and the heat exchanger 3 are connected through the connecting pipe 3 9.

[0022] The controller is installed on the magnetic levitation vacuum pump 2 , and the magnetic levitation vacuum pump 2 and the heat exchanger 3 are both communicatively connected with the controller.

[0023] like Figure 2 and Figure 3As shown, the filter mechanism 1 includes a filter plate 11, a filter mounting housing 12, a partition 13, a filter 14 and a shutter mechanism 4, the filter plate 11 and the filter mounting housing 12 are detachably connected, and the filter mounting housing 12 and the shutter mechanism 4 are detachably connected.

[0024] like Figure 4 As shown, the partition 13 is installed in the cavity surrounded by the filter plate 11 and the filter installation housing 12. The length direction of the partition 13 is vertical. There are two partitions 13. The filter 14 and the partition 13 are detachably connected.

[0025] like Figure 4 As shown, the filter mechanism 1 also includes an exhaust interface part 15 and an air intake interface part 16. The exhaust interface part 15 is connected to the connecting pipe 15, and the air intake interface part 16 is connected to the connecting pipe 3 9. The end of the exhaust interface part 15 away from the connecting pipe 15 is located in the cavity surrounded by the filter plate 11, the filter installation cover 12 and the two partitions 13. The end of the air intake interface part 16 away from the connecting pipe 3 9 is located in the cavity surrounded by the filter plate 11, the filter installation cover 12 and the two partitions 13.

[0026] like Figure 4 and Figure 8 As shown, the filtering mechanism 1 also includes a cylinder sealing plate assembly 6 and a sealing support plate assembly 8. The cylinder sealing plate assembly 6 includes a vertical cylinder 61 and a sealing plate 62. The sealing support plate assembly 8 includes a first seal 81 and a second seal 82. The lower end of the vertical cylinder 61 and the upper end of the sealing plate 62 are detachably connected. The upper end of the vertical cylinder 61 is detachably connected to the filter mounting cover 12. The vertical cylinder 61 is vertical in the length direction. The first seal 81 and the second seal 82 are both fixedly connected to the partition 13. The first seal 81 and the second seal 82 are both fitted with the sealing plate 62. The vertical cylinder 61 is communicatively connected to the controller. The first seal 81 is located above the filter 14, and the second seal 82 is located below the filter 14.

[0027] like Figure 4 and Figure 5 As shown, the filtering mechanism 1 also includes a sealing strip 1 and a sealing strip 2. A sealing groove 83 is provided on the first sealing member 81 and the second sealing member 82. The first sealing member 81 is fitted with the sealing strip 1 through the sealing groove 83, and the second sealing member 82 is fitted with the sealing strip 2 through the sealing groove 83. The upper ends of the sealing strip 1 and the upper ends of the sealing strip 2 are both fitted with the sealing plate 62, and the length directions of the sealing strip 1 and the sealing strip 2 are both horizontal.

[0028] like Figure 6 and Figure 7As shown, the filter mechanism 1 also includes a partition filter plate 17, the plane where the partition filter plate 17 is located is horizontal, the partition filter plate 17 is detachably connected to the second sealing member 82, the partition filter plate 17 is in contact with the filter plate 11 and the filter mounting cover 12, the exhaust interface portion 15 is located above the partition filter plate 17, and the intake interface portion 16 is located below the partition filter plate 17.

[0029] like Figure 2 As shown, the shutter mechanism 4 includes a first shutter 41 and a second shutter 42 . The plane where the first shutter 41 is located is perpendicular to the plane where the second shutter 42 is located. The first shutter 41 and the second shutter 42 are both detachably connected to the filter mounting cover 12 .

[0030] like Figure 8 As shown, the magnetic levitation vacuum pump 2 includes a vacuum pump body 21, an impeller suction port 22 and an impeller exhaust port 23. The vacuum pump body 21 is connected to the impeller suction port 22 and the impeller exhaust port 23 respectively. The end of the impeller suction port 22 away from the vacuum pump body 21 is connected to the connecting pipe 1 5, and the end of the impeller exhaust port 23 away from the vacuum pump body 21 is connected to the connecting pipe 2 7.

[0031] like Fig. 9 As shown, it also includes a water pump. The heat exchanger 3 includes a heat exchanger body 31, a heat engine exhaust port 32, a heat engine air inlet 33, a cooling water inlet 34 and a cooling water outlet 35. The heat engine exhaust port 32, the heat engine air inlet 33, the cooling water inlet 34 and the cooling water outlet 35 are all connected to the heat exchanger body 31, the water pump is detachably connected to the heat exchanger body 31, and the water pump is communicatively connected to the controller.

[0032] like Fig.10 As shown, the end of the heat engine exhaust port 32 away from the heat exchanger body 31 is connected to the connecting pipe 3 9, the end of the heat engine air inlet port 33 away from the heat exchanger body 31 is connected to the connecting pipe 2 7, the end of the cooling water inlet port 34 away from the heat exchanger body 31 is connected to the water pump, and the end of the cooling water outlet port 35 away from the heat exchanger body 31 is connected to the water pump.

[0033] A magnetic levitation vacuum pump filtering and cooling method, using a magnetic levitation vacuum pump filtering and cooling system, comprises the following steps: Step 1: The controller controls the magnetic levitation vacuum pump 2 to start, and the main shaft of the magnetic levitation vacuum pump 2 drives the cooling impeller at the tail end of the motor to rotate, and the cooling impeller at the tail end of the motor starts to inhale air, and the air passes through the shutter mechanism 4 and enters the cavity surrounded by the filter installation cover 12 and the filter plate 11 to achieve preliminary filtration; Step 2: The air after the initial filtration is filtered through the filter 14 for secondary filtration, and the secondary filtered air is sucked in by the exhaust interface 15, and then enters the magnetic levitation vacuum pump 2 through the connecting pipe 15; Step 3: After the cooling gas flows through the magnetic levitation vacuum pump 2, the temperature rises, and the high-temperature gas enters the heat exchanger 3 through the connecting pipe 2 7 and the temperature drops, thereby achieving cooling; Step 4: The cooled air returns to the filter mechanism 1 through the connecting pipe 3 9 and the air intake interface 16 in sequence; Step 5: The controller controls the vertical cylinder 61 to move downward, the sealing plate 62 seals the filter 14, and the cooled air is sucked in by the exhaust interface 15, and then enters the magnetic levitation vacuum pump 2 again through the connecting pipe 5, completing the first cycle. The subsequent cycles do not need to inhale a large amount of air from the environment, and rely on the suction interface 16 and the exhaust interface 15 to form a closed internal cycle.

[0034] The heat exchanger 3 is a device that transfers part of the heat of the hot fluid to the cold fluid. The heat exchanger 3 adopts the existing technology.

[0035] like Figure 6 As shown, the seal support plate assembly 8 further includes a reinforcing rib 84 , which is fixedly connected to the second seal 82 , and the reinforcing rib 84 is fixedly connected to the partition 13 , and the reinforcing rib 84 improves the connection strength between the second seal 82 and the partition 13 .

[0036] As the technical solution of the present invention, the hardware setting provided is only for the purpose of facilitating the implementation of braking control based on the hardware facilities. How to implement braking control and braking control method specifically is not the technical problem to be solved by the present invention and the object to be protected. At the same time, the communication methods between the devices all adopt the existing communication methods, which are not the invention points of this application.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A magnetic levitation vacuum pump filtering and cooling system, characterized in that: The invention comprises a filtering mechanism (1), a magnetic levitation vacuum pump (2), a heat exchanger (3), a connecting pipe 1 (5), a connecting pipe 2 (7), a connecting pipe 3 (9) and a controller, wherein the filtering mechanism (1) and the magnetic levitation vacuum pump (2) are connected via the connecting pipe 1 (5), the magnetic levitation vacuum pump (2) and the heat exchanger (3) are connected via the connecting pipe 2 (7), and the filtering mechanism (1) and the heat exchanger (3) are connected via the connecting pipe 3 (9); The controller is installed on the magnetic levitation vacuum pump (2), and the magnetic levitation vacuum pump (2) and the heat exchanger (3) are both communicatively connected to the controller.

2. A magnetic levitation vacuum pump filtering and cooling system according to claim 1, characterized in that: The filter mechanism (1) comprises a filter plate (11), a filter mounting housing (12), a partition plate (13), a filter (14) and a shutter mechanism (4); the filter plate (11) and the filter mounting housing (12) are detachably connected, and the filter mounting housing (12) and the shutter mechanism (4) are detachably connected; The partition (13) is installed in a cavity enclosed by the filter plate (11) and the filter installation housing (12); the partition (13) is vertical in length; there are two partitions (13); and the filter (14) and the partition (13) are detachably connected.

3. A magnetic levitation vacuum pump filtering and cooling system according to claim 2, characterized in that: The filter mechanism (1) further comprises an exhaust interface portion (15) and an intake interface portion (16), wherein the exhaust interface portion (15) is in communication with the connecting pipe one (5), and the intake interface portion (16) is in communication with the connecting pipe three (9), and an end of the exhaust interface portion (15) away from the connecting pipe one (5) is located in a cavity surrounded by the filter plate (11), the filter mounting cover (12) and the two partitions (13), and an end of the intake interface portion (16) away from the connecting pipe three (9) is located in a cavity surrounded by the filter plate (11), the filter mounting cover (12) and the two partitions (13).

4. A magnetic levitation vacuum pump filtering and cooling system according to claim 3, characterized in that: The filter mechanism (1) further comprises a cylinder sealing plate assembly (6) and a sealing member support plate assembly (8); the cylinder sealing plate assembly (6) comprises a vertical cylinder (61) and a sealing plate (62); the sealing member support plate assembly (8) comprises a first sealing member (81) and a second sealing member (82); the lower end of the vertical cylinder (61) and the upper end of the sealing plate (62) are detachably connected; the upper end of the vertical cylinder (61) is detachably connected to a filter mounting housing (12); the vertical cylinder (61) is vertical in length direction; the first sealing member (81) and the second sealing member (82) are both fixedly connected to the partition plate (13); the first sealing member (81) and the second sealing member (82) are both in contact with the sealing plate (62); the vertical cylinder (61) is communicatively connected to a controller; the first sealing member (81) is located above the filter (14); and the second sealing member (82) is located below the filter (14).

5. A magnetic levitation vacuum pump filtering and cooling system according to claim 4, characterized in that: The filtering mechanism (1) further comprises a sealing strip 1 and a sealing strip 2, wherein the first sealing member (81) and the second sealing member (82) are both provided with a sealing groove (83), the first sealing member (81) is bonded to the sealing strip 1 via the sealing groove (83), and the second sealing member (82) is bonded to the sealing strip 2 via the sealing groove (83), the upper ends of the sealing strip 1 and the upper ends of the sealing strip 2 are both bonded to the sealing plate (62), and the length directions of the sealing strip 1 and the sealing strip 2 are both horizontal.

6. A magnetic levitation vacuum pump filtering and cooling system according to claim 5, characterized in that: The filter mechanism (1) further comprises a partition filter plate (17), the plane on which the partition filter plate (17) is located is horizontal, the partition filter plate (17) is detachably connected to the second sealing member (82), the partition filter plate (17) is in contact with the filter plate (11) and the filter mounting housing (12), the exhaust interface portion (15) is located above the partition filter plate (17), and the suction interface portion (16) is located below the partition filter plate (17).

7. The magnetic levitation vacuum pump filtering and cooling system according to claim 2, characterized in that: The shutter mechanism (4) comprises a first shutter (41) and a second shutter (42); the plane where the first shutter (41) is located is perpendicular to the plane where the second shutter (42) is located; the first shutter (41) and the second shutter (42) are both detachably connected to the filter mounting cover (12).

8. The magnetic levitation vacuum pump filtering and cooling system according to claim 1, characterized in that: The magnetic levitation vacuum pump (2) comprises a vacuum pump body (21), an impeller air intake port (22) and an impeller air exhaust port (23); the vacuum pump body (21) is connected to the impeller air intake port (22) and the impeller air exhaust port (23) respectively; one end of the impeller air intake port (22) away from the vacuum pump body (21) is connected to a connecting pipe 1 (5); and one end of the impeller air exhaust port (23) away from the vacuum pump body (21) is connected to a connecting pipe 2 (7).

9. The magnetic levitation vacuum pump filtering and cooling system according to claim 1, characterized in that: The heat exchanger (3) further comprises a water pump, wherein the heat exchanger (3) comprises a heat exchanger body (31), a heat engine exhaust port (32), a heat engine air inlet (33), a cooling water inlet (34) and a cooling water outlet (35), wherein the heat engine exhaust port (32), the heat engine air inlet (33), the cooling water inlet (34) and the cooling water outlet (35) are all in communication with the heat exchanger body (31), the water pump is detachably connected to the heat exchanger body (31), and the water pump is in communication with a controller; One end of the heat engine exhaust port (32) away from the heat exchanger body (31) is connected to the connecting pipe three (9), one end of the heat engine air inlet (33) away from the heat exchanger body (31) is connected to the connecting pipe two (7), one end of the cooling water inlet (34) away from the heat exchanger body (31) is connected to the water pump, and one end of the cooling water outlet (35) away from the heat exchanger body (31) is connected to the water pump.

10. A magnetic levitation vacuum pump filtering and cooling method, using the magnetic levitation vacuum pump filtering and cooling system according to claim 4, characterized in that: The following steps are involved: Step 1: The controller controls the magnetic levitation vacuum pump (2) to start, and the main shaft of the magnetic levitation vacuum pump (2) drives the cooling impeller at the rear end of the motor to rotate, and the cooling impeller at the rear end of the motor starts to inhale air, and the air passes through the shutter mechanism (4) and enters the cavity surrounded by the filter installation cover (12) and the filter plate (11), thereby achieving preliminary filtration; Step 2: The air after the initial filtration is filtered through the filter (14) for secondary filtration. The secondary filtered air is sucked in through the exhaust interface (15) and then enters the magnetic levitation vacuum pump (2) through the connecting pipe (5). Step 3: After the cooling gas flows through the magnetic levitation vacuum pump (2), the temperature rises. After the high-temperature gas passes through the connecting pipe 2 (7) and enters the heat exchanger (3), the temperature drops, thereby achieving cooling. Step 4: The cooled air returns to the filter mechanism (1) through the connecting pipe (9) and the air intake interface (16) in sequence; Step 5: The controller controls the vertical cylinder (61) to move downward, and the sealing plate (62) seals the filter (14). The cooled air is sucked in through the exhaust interface (15), and then enters the magnetic levitation vacuum pump (2) again through the connecting pipe (5), completing the first cycle. The subsequent cycles do not need to suck a large amount of air from the environment, and rely on the suction interface (16) and the exhaust interface (15) to form a closed internal cycle.

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