Circulating fan with good sealing performance and good heat dissipation

Abstract

The invention discloses a circulating fan with good sealing performance and good heat dissipation, and relates to the technical field of circulating fans. Cooling water is injected into the first cooling water cavity, the second cooling water cavity and the third cooling water cavity through the water pump, the second cooling water cavity and the third cooling water cavity conduct heat dissipation on the side wall and the top of the motor body correspondingly, and therefore the heat dissipation comprehensiveness and the heat dissipation effect of the motor body are guaranteed; meanwhile, the first cooling water cavity dissipates heat of the rotating shaft main body, so that a good working environment exists between the motor body and the rotating shaft main body, and the normal work of the motor body and the rotating shaft main body is prevented from being influenced by high temperature; the working ends of the upper portion and the bottom of the rotating shaft are fully sealed, it is guaranteed that impurities enter the rotating shaft, meanwhile, through the combined sealing, the structure is simple, the overall cost is low, and the follow-up maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of circulation fans, and specifically to a circulation fan with good sealing performance and good heat dissipation performance. Background Art

[0002] Circulation fans are widely used in industrial fields such as tire manufacturing, petroleum, chemical industry, and power generation to pressurize gases to achieve the pressure required for industrial production. The biggest problem in circulation fans is the sealing problem, and the most important is the sealing problem of the rotating shaft. Circulation fans generally use mechanical seals, which are expensive, have a complex structure, and high maintenance costs. At the same time, during the operation of the motor and the rotating shaft, a large amount of heat energy will be generated. If the heat cannot be dissipated in time, the temperature will rise, which will lead to damage to the motor and the rotating shaft, and even cause accidents.

[0003] In view of the above problems, the inventor proposes a circulation fan with good sealing performance and good heat dissipation performance to solve the above problems. Summary of the Invention

[0004] In order to solve the above problems, the purpose of the present invention is to provide a circulation fan with good sealing performance and good heat dissipation performance.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: A circulation fan with good sealing performance and good heat dissipation performance, including a water cooling system and a fan main body. The water cooling system includes a cooling water tank, and a cooling water heat dissipation component is arranged inside the cooling water tank. One end of the cooling water tank is provided with a fourth cooling water pipe, and a water pump is connected to the end of the fourth cooling water pipe far away from the cooling water pipe. The output end of the water pump is connected to a third cooling water pipe. The fan main body includes a motor protection shell. The bottom of the motor protection shell body is connected to a rotating shaft protection shell through a flange. A rotating shaft sleeve is arranged inside the rotating shaft protection shell, and a rotating shaft main body is arranged inside the rotating shaft sleeve. A motor body is installed inside the motor protection shell. The top end of the rotating shaft main body is connected to the motor body through a bearing. The bottom of the rotating shaft protection shell is connected to a wind blade protection shell through a flange. An impeller is arranged inside the wind blade protection shell, and the bottom of the rotating shaft main body is fixedly connected to the impeller. A support frame is fixedly arranged at the bottom of the outer wall of the wind blade protection shell. A cooling component is arranged between the motor protection shell and the rotating shaft protection shell, and a sealing component is arranged between the rotating shaft protection shell and the rotating shaft.

[0006] Preferably, the cooling assembly includes a first cooling water chamber which is opened inside the rotating shaft protective housing. The end of the third cooling water pipe away from the water pump communicates with the first cooling water chamber. The end of the first cooling water chamber away from the third cooling water pipe is connected to the motor protective housing through a fifth cooling water pipe. A second cooling water chamber is opened inside the motor protective housing. A top cover is connected to the connection flange of the motor protective housing. A third cooling water chamber is opened inside the top cover. The top end of the second cooling water chamber is connected to the third cooling water chamber through a second cooling water pipe. A first cooling water pipe is connected to the top of the top cover. The end of the first cooling water pipe away from the top cover is connected and arranged inside the cooling water tank. An air inlet is installed at the bottom of the outer wall of the fan protective housing. An air outlet is installed on the side wall of the fan protective housing.

[0007] Preferably, the cooling water heat dissipation assembly includes a partition board which is fixedly arranged inside the cooling water tank and divides the cooling water tank into a water storage chamber and a heat dissipation chamber. The end of the first cooling water pipe connected inside the cooling water tank is arranged in the heat dissipation chamber. A heat dissipation pipe which is integrally vertically arranged is arranged in the heat dissipation chamber. The input end of the heat dissipation pipe is connected to the first cooling water pipe. A base is fixedly arranged at the bottom inside the heat dissipation chamber. A heat dissipation fin is fixedly arranged at the upper end of the base. The heat dissipation pipe is inserted through the heat dissipation fin. The output end of the heat dissipation pipe penetrates through the partition board and is arranged in the water storage chamber. A blower is installed inside the heat dissipation chamber. The output end of the blower faces the heat dissipation fin. An air outlet is opened at one end of the cooling water tank opposite to the blower. The heat dissipation pipe is arranged in an S shape.

[0008] Preferably, a support plate is installed at the bottom inside the motor protective housing. The bottom of the motor body is arranged on the support plate. A heat insulation board is provided at one end where the fan protective housing is connected to the rotating shaft protective housing.

[0009] Preferably, the sealing assembly includes an expansion ring set which is arranged inside the rotating shaft protective housing and is closely arranged with the bearing. Three annular grooves are opened in the expansion ring set. Expansion rings are arranged in the annular grooves. The expansion rings are in interference fit with the rotating shaft main body and can give a certain frictional force to the rotating shaft. A second high-pressure nitrogen injection port and a high-pressure nitrogen outlet are connected to one end of the rotating shaft protective housing.

[0010] Preferably, a wire body is provided at the upper end of the motor body. A wire protective housing is installed on the outer wall of the motor protective housing close to the wire body and the wire body is arranged inside the wire protective housing. A wire connection outlet is opened at one end of the wire protective housing away from the motor protective housing. Filling substances and insulating substances are wound around the wire body inside the wire protective housing. The wire body is connected to an external power supply through the wire connection outlet. The periphery of the wire connection outlet is sealed with filler. A first high-pressure nitrogen injection port is opened on the wire protective housing.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, cooling water is injected into the first cooling water chamber, the second cooling water chamber and the third cooling water chamber through a water pump. The second cooling water chamber and the third cooling water chamber respectively dissipate heat from the side wall and the top of the motor body, thereby ensuring the comprehensiveness and effectiveness of the heat dissipation of the motor body. At the same time, the first cooling water chamber dissipates heat from the rotating shaft body, so that there is a good working environment between the motor body and the rotating shaft body, avoiding high temperature from affecting its normal operation; 2. In the present invention, the heat dissipation pipes are arranged inside the heat dissipation fins. At this time, the heat dissipation fins will drive the heat of the cooling water in the heat dissipation pipes, thereby cooling the cooling water that absorbs heat. In cooperation with the blower blowing air to dissipate heat from the heat dissipation fins and the heat dissipation pipes, the temperature of the cooling water itself is further reduced. The cooled cooling water will enter the water storage chamber; 3. In the present invention, there are filling substances and insulating substances inside the wire protection shell around the wire body. At the same time, the wire body is connected to an external power supply through a wire outlet. The periphery of the wire outlet is filled and sealed, thereby ensuring the sealing performance inside the fan. Three annular grooves are opened in the expansion ring. The expansion ring is arranged in the annular groove and is in interference fit with the rotating shaft body, thereby ensuring the sealing performance of the rotating shaft body. The second high-pressure nitrogen injection port introduces low-temperature high-pressure nitrogen, and the escaped gas is taken away through the high-pressure nitrogen outlet after circulation. And the low-temperature high-pressure nitrogen has a cooling effect. Through the sealing components composed of the filling substances and insulating substances set above and the expansion ring for sealing the rotating shaft, the working ends above and below the rotating shaft are fully sealed, ensuring that impurities do not enter the rotating shaft. At the same time, through the above combined sealing, the structure is simple, the overall cost is low, and the subsequent maintenance cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0013] Figure 1 It is a left view structural schematic diagram of the circulation fan of the present invention.

[0014] Figure 2 It is a right view structural schematic diagram of the circulation fan of the present invention.

[0015] Figure 3 It is a cross-sectional view structural schematic diagram of the circulation fan of the present invention.

[0016] Figure 4 This is a schematic diagram of the rotating shaft bushing structure of the present invention.

[0017] Figure 5 This is a schematic diagram of the internal structure of the cooling water tank of the present invention.

[0018] In the figure: 1. Cooling water tank; 101. Partition board; 102. Heat dissipation pipe; 103. Base; 104. Heat dissipation fin; 105. Air outlet; 106. Blower; 107. Heat dissipation cavity; 108. Water storage cavity; 2. First cooling water pipe; 3. Second cooling water pipe; 4. Motor protection shell; 401. Top cover; 5. First high-pressure nitrogen injection port; 6. Wire protection shell; 7. Wire connection outlet; 8. Rotating shaft protection shell; 9. Wind blade protection shell; 10. Support frame; 11. Air inlet; 12. Third cooling water pipe; 13. Water pump; 14. Fourth cooling water pipe; 15. Air outlet; 16. Fifth cooling water pipe; 17. Second high-pressure nitrogen injection port; 18. High-pressure nitrogen outlet; 19. Impeller; 20. First cooling water cavity; 21. Second cooling water cavity; 22. Motor body; 221. Wire body; 23. Third cooling water cavity; 24. Filling material; 25. Support plate; 26. Expansion ring sleeve; 27. Bearing; 28. Heat insulation board; 29. Expansion ring; 30. Rotating shaft bushing; 31. Rotating shaft main body. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment: As Figures 1-5As shown in the figure, the present invention provides a circulation fan with good sealing and good heat dissipation, including a water cooling system and a fan main body. The water cooling system includes a cooling water tank 1, and a cooling water heat dissipation component is built in the cooling water tank 1. One end of the cooling water tank 1 is provided with a fourth cooling water pipe 14. The end of the fourth cooling water pipe 14 far from the cooling water pipe is connected with a water pump 13. The output end of the water pump 13 is connected with a third cooling water pipe 12. The fan main body includes a motor protection shell 4. The bottom of the motor protection shell 4 body is connected with a rotating shaft protection shell 8 through a flange. A rotating shaft sleeve 30 is arranged inside the rotating shaft protection shell 8. A rotating shaft main body 31 is arranged inside the rotating shaft sleeve 30. A motor body 22 is installed inside the motor protection shell 4. The top end of the rotating shaft main body 31 is connected with the motor body 22 through a bearing 27. The bottom of the rotating shaft protection shell 8 is connected with a blade protection shell 9 through a flange. An impeller 19 is arranged inside the blade protection shell 9. The bottom of the rotating shaft main body 31 is fixedly connected to the impeller 19. A support frame 10 is fixedly arranged at the bottom of the outer wall of the blade protection shell 9. A cooling component is arranged between the motor protection shell 4 and the rotating shaft protection shell 8, and a sealing component is arranged between the rotating shaft protection shell 8 and the rotating shaft.

[0021] The cooling component includes a first cooling water cavity 20, which is opened inside the rotating shaft protection shell 8. The end of the third cooling water pipe 12 far from the water pump 13 is communicated with the first cooling water cavity 20. The end of the first cooling water cavity 20 far from the third cooling water pipe 12 is connected with the motor protection shell 4 through a fifth cooling water pipe 16. A second cooling water cavity 21 is opened inside the motor protection shell 4. A top cover 401 is connected to the connection flange of the motor protection shell 4. A third cooling water cavity 23 is opened inside the top cover 401. The top end of the second cooling water cavity 21 is connected with the third cooling water cavity 23 through a second cooling water pipe 3. The top of the top cover 401 is connected with a first cooling water pipe 2. The end of the first cooling water pipe 2 far from the top cover 401 is connected and arranged inside the cooling water tank 1. An air inlet 11 is installed at the bottom of the outer wall of the blade protection shell 9, and an air outlet 15 is installed on the side wall of the blade protection shell 9.

[0022] By adopting the above technical scheme, the cooling water is injected into the first cooling water cavity 20, the second cooling water cavity 21 and the third cooling water cavity 23 through the water pump 13 to dissipate heat from the motor body 22 and the rotating shaft main body 31, so that a good working environment is provided between the motor body 22 and the rotating shaft main body 31.

[0023] The cooling water heat dissipation component includes a partition plate 101, which is fixedly arranged in the cooling water tank 1 and divides the cooling water tank 1 into a water storage chamber 108 and a heat dissipation chamber 107. One end of the first cooling water pipe 2 connected in the cooling water tank 1 is arranged in the heat dissipation chamber 107. A vertically arranged heat dissipation pipe 102 is provided in the heat dissipation chamber 107. The input end of the heat dissipation pipe 102 is connected to the first cooling water pipe 2. A base 103 is fixedly provided at the bottom in the heat dissipation chamber 107. A heat dissipation fin 104 is fixedly provided at the upper end of the base 103. The heat dissipation pipe 102 is inserted through the heat dissipation fin 104. The output end of the heat dissipation pipe 102 passes through the partition plate 101 and is arranged in the water storage chamber 108.

[0024] By adopting the above technical solution, the cooling water of the first cooling water pipe 2 will pass through the heat dissipation pipe 102. Since the heat dissipation pipe 102 is arranged in the heat dissipation fin 104, at this time, the heat dissipation fin 104 will drive the heat of the cooling water in the heat dissipation pipe 102, thereby cooling the cooling water that absorbs heat.

[0025] A blower 106 is installed inside the heat dissipation chamber 107. The output end of the blower 106 faces the heat dissipation fin 104. An air outlet 105 is opened at one end of the cooling water tank 1 opposite to the blower.

[0026] By adopting the above technical solution, in cooperation with the blowing of the blower 106 to dissipate heat from the heat dissipation fin 104 and the heat dissipation pipe 102, the hot air will be discharged through the air outlet 105, thereby further reducing the temperature of the cooling water itself. The cooled cooling water will enter the water storage chamber 108, making it more effective to dissipate heat from the motor body 22 and the rotating shaft main body 31 during subsequent circulation.

[0027] The heat dissipation pipe 102 is arranged in an S shape.

[0028] By adopting the above technical solution, the S-shaped heat dissipation pipe 102 can extend the moving path of the cooling water, thereby increasing the heat dissipation time of itself and enhancing the heat dissipation effect of the cooling water.

[0029] A support plate 25 is installed at the bottom inside the motor protection case 4. The bottom of the motor body 22 is arranged on the support plate 25. A heat insulation plate 28 is provided at one end where the fan blade protection case 9 is connected to the rotating shaft protection case 8.

[0030] By adopting the above technical solution, the support plate 25 supports the motor body 22 inside the motor protection case 4. At the same time, the heat insulation plate 28 can reduce the heat transferred from the fan blade protection case 9 to the rotating shaft protection case 8, enabling the rotating shaft main body 31 to have a good working environment.

[0031] The sealing assembly includes an expansion ring sleeve 26, which is arranged in the rotating shaft protective housing 8 and is closely arranged with the bearing 27. The expansion ring sleeve 26 is provided with three annular grooves, and expansion rings 29 are arranged in the annular grooves. The expansion rings 29 are in interference fit with the rotating shaft main body 31 and can give a certain frictional force to the rotating shaft.

[0032] By adopting the above technical solution, the expansion ring sleeve 26 is provided with three annular grooves, and the expansion rings 29 are arranged in the annular grooves and are in interference fit with the rotating shaft main body 31, so as to ensure the sealing of the rotating shaft main body 31 and reduce the entry of impurities and gases.

[0033] One end of the rotating shaft protective housing 8 is connected with a second high-pressure nitrogen injection port 17 and a high-pressure nitrogen outlet 18.

[0034] By adopting the above technical solution, low-temperature high-pressure nitrogen is introduced into the second high-pressure nitrogen injection port 17, and the escaped gas is taken away through the high-pressure nitrogen outlet 18 after circulation, and the low-temperature high-pressure nitrogen has the effect of cooling and temperature reduction.

[0035] The upper end of the motor body 22 is provided with a wire body 221. A wire protective housing 6 is installed on the outer wall of the motor protective housing 4 near the wire body 221, and the wire body 221 is arranged in the wire protective housing 6. One end of the wire protective housing 6 away from the motor protective housing 4 is provided with a wire outlet 7. The inside of the wire protective housing 6 is filled with a filling material 24 and an insulating material is wound around the wire body 221. The wire body 221 is connected to an external power supply through the wire outlet 7, and the periphery of the wire outlet 7 is sealed with a filler.

[0036] By adopting the above technical solution, the wire body 221 is protected by the wire protective housing 6. The inside of the wire protective housing 6 is filled with a filling material 24 and an insulating material is wound around the wire body 221. At the same time, the wire body 221 is connected to an external power supply through the wire outlet 7, and the periphery of the wire outlet 7 is sealed with a filler, so as to ensure the sealing inside the fan.

[0037] The wire protective housing 6 is provided with a first high-pressure nitrogen injection port 5.

[0038] By adopting the above technical solution, the first high-pressure nitrogen injection port 5 opened on the side wall of the wire protective housing 6 can also inject low-temperature high-pressure nitrogen into the housing to ensure the sealing of the wire protective housing 6. At the same time, for the injection of high-pressure nitrogen, the injection of nitrogen can be stopped by measuring with a pressure sensor when the injected high-pressure nitrogen is slightly higher than the required pressurized gas.

[0039] Working principle: Start the water pump 13. The water pump 13 sends the cooling water in the cooling water tank 1 through the fourth cooling water pipe 14 into the first cooling water cavity 20 through the third cooling water pipe 12. The function of the first cooling water cavity 20 is to dissipate heat from the rotating shaft body 31 to ensure a suitable working environment. The cooling water enters the second cooling water cavity 21 from the first cooling water cavity 20 through the fifth cooling water pipe 16. The function of the second cooling water cavity 21 is to cool down the motor body 22 to ensure the normal operation of the motor body 22. At the same time, heat-conducting metal materials can be arranged around the motor body 22 to help conduct heat. The cooling water enters the third cooling water cavity 23 opened in the top cover 401 from the second cooling water cavity 21 through the second cooling water pipe 3. The function of the third cooling water cavity 23 is the same as that of the second cooling water cavity 21, both for dissipating heat from the motor body 22. The second cooling water cavity 21 is used to dissipate heat from the side wall of the motor body 22, while the third cooling water cavity 23 dissipates heat from the top of the motor body 22, so as to ensure the comprehensiveness and effect of heat dissipation of the motor body 22. Through the above operations, a good working environment is created between the motor body 22 and the rotating shaft body 31. The cooling water returns from the third cooling water cavity 23 to the heat dissipation cavity 107 inside the cooling water tank 1 through the first cooling water pipe 2. The cooling water passing through the first cooling water pipe 2 will pass through the heat dissipation pipe 102. Since the heat dissipation pipe 102 is arranged inside the heat dissipation fins 104, at this time, the heat dissipation fins 104 will take away the heat of the cooling water in the heat dissipation pipe 102, thereby cooling the heat-absorbed cooling water. In cooperation with the blower 106 blowing air to dissipate heat from the heat dissipation fins 104 and the heat dissipation pipe 102, the temperature of the cooling water itself is further reduced. The cooled cooling water will enter the water storage cavity 108. The above cooling water passing through is one water cooling cycle; The wire body 221 is protected by the wire protection shell 6. There are filling substances 24 and insulating substances inside the wire protection shell 6 wound around the wire body 221. At the same time, the wire body 221 is connected to an external power supply through the wire outlet 7. The periphery of the wire outlet 7 is filled and sealed to ensure the airtightness inside the fan. The expansion ring sleeve 26 is provided with three annular grooves. The expansion ring 29 is arranged in the annular grooves and has an interference fit with the rotating shaft body 31 to ensure the airtightness of the rotating shaft body 31; The second high-pressure nitrogen injection port 17 injects low-temperature high-pressure nitrogen. The escaped gas is taken away through the high-pressure nitrogen outlet 18 after circulation, and the low-temperature high-pressure nitrogen has a cooling effect. At the same time, the first high-pressure nitrogen injection port 5 opened on the side wall of the wire protection shell 6 can also inject low-temperature high-pressure nitrogen into the shell to ensure the airtightness of the wire protection shell 6. At the same time, for the injection of high-pressure nitrogen, the injection of nitrogen can be stopped by measuring the injected high-pressure nitrogen slightly higher than the required pressurized gas through a pressure sensor.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A circulation fan with good sealing and heat dissipation, comprising a water cooling system and a fan main body, characterized in that: The water cooling system includes a cooling water tank (1), which is internally provided with a cooling water heat dissipation component. One end of the cooling water tank (1) is provided with a fourth cooling water pipe (14). The end of the fourth cooling water pipe (14) away from the cooling water pipe is connected with a water pump (13). The output end of the water pump (13) is connected with a third cooling water pipe (12). The fan body includes a motor protection shell (4). The bottom of the motor protection shell (4) is connected with a rotating shaft protection shell (8) through a flange. A rotating shaft sleeve (30) is arranged inside the rotating shaft protection shell (8). A rotating shaft main body (31) is arranged inside the rotating shaft sleeve (30). A motor main body (22) is installed inside the motor protection shell (4). The top end of the rotating shaft main body (31) is connected with the motor main body (22) through a bearing (27). The bottom of the rotating shaft protection shell (8) is connected with a wind blade protection shell (9) through a flange. An impeller (19) is arranged inside the wind blade protection shell (9). The bottom of the rotating shaft main body (31) is fixedly connected to the impeller (19). A support frame (10) is fixedly arranged at the bottom of the outer wall of the wind blade protection shell (9). A cooling component is arranged between the motor protection shell (4) and the rotating shaft protection shell (8). A sealing component is arranged between the rotating shaft protection shell (8) and the rotating shaft.

2. The circulation fan with good sealing and good heat dissipation according to claim 1, characterized in that, The cooling component includes a first cooling water cavity (20), which is opened inside the rotating shaft protection shell (8). The end of the third cooling water pipe (12) away from the water pump (13) is communicated with the first cooling water cavity (20). The end of the first cooling water cavity (20) away from the third cooling water pipe (12) is connected with the motor protection shell (4) through a fifth cooling water pipe (16). A second cooling water cavity (21) is opened inside the motor protection shell (4). A top cover (401) is connected to the connection flange of the motor protection shell (4). A third cooling water cavity (23) is opened inside the top cover (401). The top end of the second cooling water cavity (21) is connected with the third cooling water cavity (23) through a second cooling water pipe (3). The top of the top cover (401) is connected with a first cooling water pipe (2). The end of the first cooling water pipe (2) away from the top cover (401) is connected and arranged inside the cooling water tank (1). An air inlet (11) is installed at the bottom of the outer wall of the wind blade protection shell (9). An air outlet (15) is installed on the side wall of the wind blade protection shell (9).

3. The circulation fan with good sealing and good heat dissipation according to claim 2, characterized in that, The cooling water heat dissipation component includes a partition plate (101). The partition plate (101) is fixedly arranged in the cooling water tank (1) and divides the cooling water tank (1) into a water storage chamber (108) and a heat dissipation chamber (107). One end of the first cooling water pipe (2) connected in the cooling water tank (1) is arranged in the heat dissipation chamber (107). A vertically arranged heat dissipation pipe (102) is arranged in the heat dissipation chamber (107). The input end of the heat dissipation pipe (102) is connected to the first cooling water pipe (2). A base (103) is fixedly arranged at the bottom in the heat dissipation chamber (107). A heat dissipation fin (104) is fixedly arranged at the upper end of the base (103). The heat dissipation pipe (102) is inserted through the heat dissipation fin (104). The output end of the heat dissipation pipe (102) passes through the partition plate (101) and is arranged in the water storage chamber (108).

4. The circulation fan with good sealing and good heat dissipation according to claim 3, characterized in that, A blower (106) is installed inside the heat dissipation chamber (107). The output end of the blower (106) faces the heat dissipation fin (104). An air outlet (105) is opened at one end of the cooling water tank (1) opposite to the blower.

5. The circulation fan with good sealing and good heat dissipation according to claim 3, characterized in that, The heat dissipation pipe (102) is arranged in an S shape.

6. The circulation fan with good sealing and good heat dissipation according to claim 1, characterized in that, A support plate (25) is installed at the bottom inside the motor protection shell (4). The bottom of the motor body (22) is arranged on the support plate (25). A heat insulation plate (28) is provided at one end where the wind blade protection shell (9) is connected to the rotating shaft protection shell (8).

7. The circulation fan with good sealing and good heat dissipation according to claim 1, characterized in that, The sealing component includes an expansion ring set (26). The expansion ring set (26) is arranged in the rotating shaft protection shell (8) and is closely arranged with the bearing (27). Three annular grooves are opened in the expansion ring set (26). Expansion rings (29) are arranged in the annular grooves. The expansion rings (29) are in interference fit with the rotating shaft body (31) and can give a certain frictional force to the rotating shaft.

8. The circulation fan with good sealing and good heat dissipation according to claim 7, characterized in that, One end of the rotating shaft protection shell (8) is connected with a second high-pressure nitrogen injection port (17) and a high-pressure nitrogen outlet (18).

9. The circulation fan with good sealing and good heat dissipation according to claim 1, characterized in that, A wire body (221) is arranged at the upper end of the motor body (22). A wire protection shell (6) is installed on the outer wall of the motor protection shell (4) near the wire body (221), and the wire body (221) is arranged inside the wire protection shell (6). A wire outlet (7) is opened at one end of the wire protection shell (6) away from the motor protection shell (4). The inside of the wire protection shell (6) is filled with a filling material (24) and an insulating material is wound around the wire body (221). The wire body (221) is connected to an external power supply through the wire outlet (7). The periphery of the wire outlet (7) is sealed with packing.

10. The circulation fan with good sealing and good heat dissipation according to claim 9, characterized in that, A first high-pressure nitrogen injection port (5) is opened on the wire protection shell (6).

Images