Explosion-proof axial flow fan for cooling mining motor

Abstract

The utility model relates to the technical field of axial flow fans, in particular to an explosion-proof axial flow fan for cooling a mining motor, which drives air to flow through a driving device, protects the motor and improves the use safety. The air inlet is enlarged through the filtering device, the impurity amount in the inlet air is reduced, and meanwhile the influence of dust attachment in the driving device on heat dissipation of the motor is reduced; dust on the filtering device is cleaned through the cleaning device, the air filtering efficiency of the filtering device is kept, the heat dissipation capacity of the driving device is improved through the cooling device, the service life of the motor is prolonged, and the practicability of the device is improved; comprising a driving device, a filtering device, a cleaning device and a cooling device, the filtering device is installed on the driving device, the cleaning device is installed on the driving device, and the cooling device is installed on the driving device.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, in particular to a flameproof axial flow fan for cooling mining motors. Background Art

[0002] Flameproof axial flow fan is a special ventilation equipment that can operate safely in an environment with explosive gas. Its structure mainly consists of six parts: flow absorber, impeller, motor, explosion-proof junction box, body, deflector, etc. This fan is suitable for metal mines, chemical mines, tunnels and other factories and mines using fans, where the conveying medium temperature does not exceed 40 degrees Celsius and there is no gas or steam environment that corrodes metals and damages insulation.

[0003] The Chinese utility model patent with application number CN201821723456.0 in the prior art relates to a flameproof axial flow fan, including a fixing device, a bearing and a junction box, etc., which can improve safety and has strong explosion-proof performance.

[0004] However, in actual use of the above device, due to explosion-proof requirements, the motor is placed in the motor compartment. During use, the cooling effect of wind speed alone is insufficient, which affects the normal service life of the motor. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a flameproof axial flow fan for cooling mining motors, which drives air flow through a driving device and protects the motor to improve safety of use; increases the air inlet through a filtering device to reduce the amount of impurities in the incoming air, and at the same time reduces the impact of dust adhesion in the driving device on the heat dissipation of the motor; cleans the dust on the filtering device through a cleaning device to maintain the filtering efficiency of the filtering device for air, improves the self-heat dissipation capacity of the driving device through a cooling device, increases the service life of the motor, and improves the practicality of the device.

[0006] The utility model discloses an explosion-proof axial flow fan for cooling a mining motor, comprising a driving device, a filtering device, a cleaning device and a cooling device, wherein the filtering device is mounted on the driving device, the cleaning device is mounted on the driving device, and the cooling device is mounted on the driving device; the driving device drives the air to flow, and the motor is protected, thereby improving the safety of use; the filtering device increases the air inlet, reduces the amount of impurities in the incoming air, and reduces the influence of dust adhesion in the driving device on the heat dissipation of the motor; the cleaning device cleans the dust on the filtering device, maintains the filtering efficiency of the filtering device on the air, and the cooling device improves the self-heat dissipation capacity of the driving device, thereby increasing the service life of the motor and improving the practicability of the device.

[0007] Preferably, the driving device includes a fixed base, a wind tube, a mounting frame, a metal sealing shell, a motor and fan blades. The wind tube is fixed at a desired position by the fixed base, a mounting frame is installed in the middle of the wind tube, a metal sealing shell is installed on the right end face of the mounting frame, a motor is installed inside the metal sealing shell, the output end of the motor passes through the left end face of the mounting frame and extends to the left side of the mounting frame, and the fan blades are mounted on the output end of the motor; turning on the motor transmits power to the fan blades to drive the fan blades to rotate, thereby driving the air flow to increase the air flow rate and send the air out of the equipment, and the motor is sealed and protected by the metal sealing shell, thereby improving the safety of the device.

[0008] Preferably, the filtering device includes an air inlet scoop, a support frame and a filter screen; the air inlet scoop is connected to the right end face of the wind tube, the support frame is installed on the right end face of the air inlet scoop, and the filter screen is installed on the right end face of the support frame; the support frame provides support for the filter screen, the air inlet scoop increases the effective air inlet area of ​​the air inlet, the filter screen is used to filter and remove impurities in the air, and dust and impurities adhering to the metal sealing shell are reduced, which affects the heat dissipation efficiency of the metal sealing shell, thereby increasing the failure probability of the motor and improving the practicability of the device.

[0009] Preferably, the cleaning device includes an air pressure switch, an explosion-proof vibration motor, a sealing shell and a circuit board. The air pressure switch is installed on the right part of the top end surface of the air duct, the explosion-proof vibration motor is installed in the middle of the left end surface of the support frame, the sealing shell is installed on the upper end surface of the air duct, and the circuit board is installed inside the sealing shell; the air pressure in the right part of the air duct is monitored by the air pressure switch, and when the surface of the filter is covered with a lot of dust and impurities, the air pressure in the right part of the air duct is reduced, and the air pressure is detected by the air pressure switch. When the air pressure is detected to be lower than the preset value, the air pressure switch transmits a signal to the explosion-proof vibration motor, which controls the explosion-proof vibration motor to start and transmit power to the support frame to drive the filter on the support frame to vibrate, thereby reducing the amount of dust covering the filter, increasing the air passing efficiency of the filter, and improving the practicability of the device.

[0010] Preferably, it also includes a sealing corner edge, a sealing groove and a rubber ring. The lower edge of the sealing shell is provided with a sealing corner edge, the lower end surface of the sealing corner edge is provided with a sealing groove, and a rubber ring is placed in the sealing groove; the sealing performance of the sealing shell is increased by the sealing groove and the rubber ring, thereby reducing the entry of outside air into the interior of the sealing shell, thereby improving the practicability and safety of the device.

[0011] Preferably, the cooling device includes a sleeve, a support plate and an air outlet scoop. The sleeve is connected to the side of the metal sealing shell through multiple groups of support plates, and the left end face of the sleeve is connected to the air outlet scoop. After the rubber ring rotates, the air on the right side of the air duct is transported to the left, so that the left part of the air outlet scoop is in a negative pressure state, thereby accelerating the air on the right side of the sleeve to pass through the inside of the sleeve, accelerating the heat dissipation efficiency of the outer side of the metal sealing shell, and improving the heat dissipation capacity of the motor.

[0012] Preferably, it also includes metal heat dissipation sheets, and multiple groups of metal heat dissipation sheets are arranged on the inner side and the outer side of the metal sealing shell; the contact area between the outer side of the metal sealing shell and the external air is increased by the multiple groups of metal heat dissipation sheets on the outer side of the metal sealing shell, thereby accelerating the dissipation of heat; the heat exchange between the air inside the metal sealing shell and the metal sealing shell is increased by the multiple groups of metal heat dissipation sheets on the inner side of the metal sealing shell, thereby improving the heat exchange efficiency of the metal sealing shell, improving the practicality of the device and the service life of the motor

[0013] Compared with the prior art, the utility model has the following beneficial effects: the driving device drives the air flow and protects the motor, thereby improving the safety of use; the filtering device increases the air inlet, reduces the amount of impurities in the incoming air, and reduces the effect of dust adhesion in the driving device on the heat dissipation of the motor; the cleaning device cleans the dust on the filtering device to maintain the filtering efficiency of the filtering device for the air, and the cooling device improves the self-heat dissipation capacity of the driving device, thereby increasing the service life of the motor and improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0015] Figure 2 It is a front view structural schematic diagram of the utility model;

[0016] Figure 3 is a schematic diagram of the cross-sectional structure of the cooling device;

[0017] Figure 4 It is a partial enlarged structural schematic diagram of the sealing shell;

[0018] Markings in the attached figure: 1. fixed base; 2. air duct; 3. mounting frame; 4. metal sealing shell; 5. motor; 6. fan blades; 7. air inlet scoop; 8. support frame; 9. filter screen; 10. air pressure switch; 11. explosion-proof vibration motor; 12. sealing shell; 13. circuit board; 14. sealing corner edge; 15. sealing groove; 16. rubber ring; 17. sleeve; 18. support plate; 19. air outlet scoop; 20. metal heat dissipation sheet. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] Example 1

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 The filtering device is installed on the driving device, and the cleaning device is installed on the filtering device;

[0022] First, turn on the motor 5 to transmit power to the fan blades 6 to drive the fan blades 6 to rotate, thereby driving the air flow to increase the air flow rate and send the air out of the equipment. At the same time, the support frame 8 provides support for the filter screen 9, and the air inlet 7 increases the effective air inlet area of ​​the air inlet. The impurities in the air are filtered and screened out through the filter screen 9. The air pressure on the right side of the wind tube 2 is monitored by the air pressure switch 10. When the surface of the filter screen 9 is covered with a lot of dust and impurities, the air pressure on the right side of the wind tube 2 is reduced, and the air pressure switch 10 is used for detection. When it is detected that the air pressure is lower than the preset value, the air pressure switch 10 transmits a signal to the explosion-proof vibration motor 11, which controls the explosion-proof vibration motor 11 to start up and transmit power to the support frame 8 to drive the filter screen 9 on the support frame 8 to vibrate, thereby reducing the dust coverage on the filter screen 9; after the rubber ring 16 rotates, the air on the right side of the wind tube 2 is transported to the left;

[0023] The driving device comprises a fixed base 1, a wind tube 2, a mounting frame 3, a metal sealing shell 4, a motor 5 and a fan blade 6. The wind tube 2 is fixed at a desired position by the fixed base 1. The mounting frame 3 is installed in the middle of the wind tube 2. The metal sealing shell 4 is installed on the right end surface of the mounting frame 3. The motor 5 is installed inside the metal sealing shell 4. The output end of the motor 5 passes through the left end surface of the mounting frame 3 and extends to the left side of the mounting frame 3. The fan blade 6 is sleeved on the output end of the motor 5.

[0024] The filtering device includes an air inlet scoop 7, a support frame 8 and a filter screen 9. The air inlet scoop 7 is connected to the right end surface of the air cylinder 2, the support frame 8 is installed on the right end surface of the air inlet scoop 7, and the filter screen 9 is installed on the right end surface of the support frame 8;

[0025] The cleaning device includes an air pressure switch 10, an explosion-proof vibration motor 11, a sealing shell 12 and a circuit board 13. The air pressure switch 10 is installed on the right part of the top end surface of the air cylinder 2, the explosion-proof vibration motor 11 is installed on the middle part of the left end surface of the support frame 8, the sealing shell 12 is installed on the upper end surface of the air cylinder 2, and the circuit board 13 is installed inside the sealing shell 12;

[0026] It also includes a sealing corner edge 14, a sealing groove 15 and a rubber ring 16. The lower edge of the sealing shell 12 is provided with a sealing corner edge 14, the lower end surface of the sealing corner edge 14 is provided with a sealing groove 15, and the rubber ring 16 is placed in the sealing groove 15;

[0027] It also includes metal heat dissipation sheets 20, and multiple groups of metal heat dissipation sheets 20 are arranged on the inner side and the outer side of the metal sealing shell 4;

[0028] The driving device drives the air flow and protects the motor to improve the safety of use; the filtering device increases the air inlet, reduces the amount of impurities in the incoming air, and reduces the impact of dust adhesion in the driving device on the heat dissipation of the motor; the cleaning device cleans the dust on the filtering device to maintain the filtering efficiency of the filtering device for air.

[0029] Example 2

[0030] The improvement is based on the first embodiment, and includes a cooling device, which is installed on the driving device;

[0031] The cooling device improves the heat dissipation capacity of the drive device, increases the service life of the motor, and improves the practicality of the device;

[0032] After the rubber ring 16 rotates, the air in the right part of the air cylinder 2 is transported to the left, so that the left part of the air outlet 19 is in a negative pressure state, thereby accelerating the air in the right part of the sleeve 17 to pass through the inside of the sleeve 17, accelerating the heat dissipation efficiency of the outer side of the metal sealing shell 4, and improving the heat dissipation capacity of the motor 5;

[0033] The cooling device comprises a sleeve 17 , a support plate 18 and an air outlet scoop 19 . The side of the metal sealing shell 4 is connected to the sleeve 17 via a plurality of support plates 18 , and the left end surface of the sleeve 17 is connected to the air outlet scoop 19 .

[0034] like Figures 1 to 4 As shown, the utility model is a flameproof axial flow fan for cooling a mining motor. When it is working, the motor 5 is first turned on to transmit power to the fan blades 6 to drive the fan blades 6 to rotate, thereby driving the air flow to increase the air flow rate and send the air out of the equipment. At the same time, the support frame 8 provides support for the filter screen 9, and the effective air inlet area of ​​the air inlet is increased through the air inlet hopper 7. The impurities in the air are filtered and screened out through the filter screen 9. The air pressure switch 10 monitors the air pressure in the right part of the air cylinder 2. When the surface of the filter screen 9 is covered with dust and impurities, the filter screen 9 is used to filter out the impurities in the air. When the air pressure in the right part of the air duct 2 is reduced, it is detected by the air pressure switch 10. When it is detected that the air pressure is lower than the preset value, the air pressure switch 10 transmits a signal to the explosion-proof vibration motor 11, which controls the explosion-proof vibration motor 11 to start and transmit power to the support frame 8 to drive the filter screen 9 on the support frame 8 to vibrate, thereby reducing the amount of dust covering the filter screen 9; after the rubber ring 16 rotates, the air in the right part of the air duct 2 is transported to the left, so that the left part of the air outlet hopper 19 is in a negative pressure state, thereby accelerating the air on the right part of the sleeve 17 to pass through the inside of the sleeve 17.

[0035] The motor 5, circuit board 13, explosion-proof vibration motor 11 and air pressure switch 10 of the explosion-proof axial flow fan for cooling a mining motor of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual without the need for creative labor by technicians in this field.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A flameproof axial flow fan for cooling mining motors; characterized in that: The invention comprises a driving device, a filtering device, a cleaning device and a cooling device, wherein the filtering device is mounted on the driving device, the cleaning device is mounted on the driving device and the cooling device is mounted on the driving device; the cooling device comprises a sleeve (17), a support plate (18) and an air outlet scoop (19); the side surface of the metal sealing shell (4) is connected to the sleeve (17) via a plurality of groups of support plates (18); the left end surface of the sleeve (17) is connected to the air outlet scoop (19).

2. A flameproof axial flow fan for cooling a mining motor as claimed in claim 1, characterized in that: The driving device comprises a fixed base (1), a wind tube (2), a mounting frame (3), a metal sealing shell (4), a motor (5) and a fan blade (6); the wind tube (2) is fixed at a desired position by the fixed base (1); the mounting frame (3) is mounted in the middle of the wind tube (2); the metal sealing shell (4) is mounted on the right end surface of the mounting frame (3); the motor (5) is mounted inside the metal sealing shell (4); the output end of the motor (5) passes through the left end surface of the mounting frame (3) and extends to the left side of the mounting frame (3); and the fan blade (6) is sleeved on the output end of the motor (5).

3. A flameproof axial flow fan for cooling a mining motor as claimed in claim 2, characterized in that: The filtering device comprises an air inlet hopper (7), a support frame (8) and a filter screen (9); the air inlet hopper (7) is connected to the right end surface of the air cylinder (2); the support frame (8) is installed on the right end surface of the air inlet hopper (7); and the filter screen (9) is installed on the right end surface of the support frame (8).

4. A flameproof axial flow fan for cooling a mining motor as claimed in claim 2, characterized in that: The cleaning device comprises an air pressure switch (10), an explosion-proof vibration motor (11), a sealing shell (12) and a circuit board (13). The air pressure switch (10) is installed at the right part of the top end surface of the air cylinder (2), the explosion-proof vibration motor (11) is installed at the middle part of the left end surface of the support frame (8), the sealing shell (12) is installed on the upper end surface of the air cylinder (2), and the circuit board (13) is installed inside the sealing shell (12).

5. A flameproof axial flow fan for cooling a mining motor as claimed in claim 4, characterized in that: The sealing shell (12) further comprises a sealing corner edge (14), a sealing groove (15) and a rubber ring (16). The sealing corner edge (14) is arranged at the lower edge of the sealing shell (12), a sealing groove (15) is opened on the lower end surface of the sealing corner edge (14), and a rubber ring (16) is placed in the sealing groove (15).

6. A flameproof axial flow fan for cooling a mining motor as claimed in claim 2, characterized in that: It also comprises metal heat dissipation sheets (20), and a plurality of groups of metal heat dissipation sheets (20) are arranged on the inner side surface and the outer side surface of the metal sealing shell (4).

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