Dry and wet dual-purpose dust collection fan

Abstract

The utility model discloses a wet and dry dual-purpose dust collection fan which comprises an installation machine shell, and the installation machine shell comprises a machine shell inner shell and a machine shell outer shell. The motor shaft, the stator core and the magnetic ring are installed in the inner casing, the front end of the inner casing is provided with a movable impeller, and the front end of the outer casing is provided with a movable impeller fan cover; a first air channel is formed between the outer wall of the inner shell and the inner wall of the outer shell. The air flow entering the movable impeller is completely isolated from the motor driving cavity through the installation machine shell, and when the dust suction fan is applied to water and dust suction equipment, the air flow with water vapor flows through the first air channel to further assist heat dissipation of the motor.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, in particular to a dry and wet dual-purpose dust suction fan. Background Art

[0002] The invention patent with patent number 202222079576.3 discloses a wet-type corrosion-resistant high-pressure dust suction fan for a self-cleaning dust removal system, including a fan suction mechanism, a fan drive mechanism installed on one side of the fan suction mechanism, a connecting pipe mechanism installed on the lower side of the fan suction mechanism and abutting against the fan drive mechanism, and a base plate fixedly installed under the fan drive mechanism and supporting the connecting pipe mechanism. The fan drive mechanism includes a motor cylinder with a coil, a motor shaft assembled into the motor cylinder, a rotor fixedly installed on the motor shaft, a front bearing seat sleeved on the motor shaft and fixedly installed with the fan suction mechanism, and also includes a rear bearing seat fixedly installed at the tail of the motor cylinder, a rear bearing installed on the rear bearing seat, a motor blade arranged on the rear bearing seat, and a fan cover fixed with screws in cooperation with the rear bearing seat.

[0003] There are certain defects in the disclosure of this patent. The overall structure sets a cooling air duct on one side of the motor assembly, which occupies a certain space and increases the size of the dust suction fan. Since the air inlet lacks a power source, the airflow at the air inlet cannot pass through the motor assembly quickly, and the heat dissipation efficiency is not high. Summary of the invention

[0004] In view of the above-mentioned technical problems, the utility model provides a wet and dry dual-purpose dust suction fan, in which a casing is installed to completely isolate the airflow entering the impeller from the motor drive cavity. When the dust suction fan is used in water and dust suction equipment, the airflow carrying water vapor flows through the air duct, thereby solving the heat dissipation problem of the dust suction fan and ensuring the normal operation of the dust suction fan.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a dry and wet dual-purpose dust suction fan, including an installation casing, the installation casing including an inner casing and an outer casing; the motor shaft, the stator core, and the magnetic ring are installed in the inner casing of the casing, the front end of the inner casing of the casing is provided with a moving impeller, and the front end of the outer casing of the casing is provided with a moving impeller wind cover; a first air duct is formed between the outer wall of the inner casing of the casing and the inner wall of the outer casing of the casing.

[0006] In order to optimize the above technical solution, the utility model also includes the following improved technical solution.

[0007] A casing extension seat is arranged at the rear end of the casing shell, and a heat dissipation fan blade is arranged at the rear end of the casing extension seat; a driving board is arranged at the rear end of the heat dissipation fan blade, and a rear cover is arranged at the rear end of the driving board.

[0008] The front end of the impeller hood is provided with an air inlet; the rear end of the rear cover is provided with a rear cover air inlet, and a second air duct is formed between the rear end of the housing extension seat and the rear cover. The heat dissipation fan blades rotate to generate suction, sucking in external air from the rear cover air inlet, flowing through the second air duct and out along the rear cover air outlet.

[0009] The motor shaft is installed in the inner shell of the casing, the magnetic ring is mounted on the motor shaft, the stator core is installed on the frame, and after winding is completed, it is installed with interference fit on the inner wall of the inner shell of the casing; a dynamic balancing block is arranged in the inner shell of the casing, and the dynamic balancing block is installed on the motor shaft.

[0010] A first bearing, a T-shaped column, a gasket, and a flange nut are arranged at the front end of the inner shell of the above-mentioned casing. The first bearing is pressed into the inner wall of the inner shell of the casing, and the T-shaped column is pressed into the outer wall of the inner shell of the casing; the impeller is installed at the front end of the T-shaped column, the gasket is installed at the front end of the impeller, and the flange nut is installed at the front end of the gasket; the impeller wind shield is installed at the front end of the outer shell of the casing.

[0011] A second bearing is arranged at the rear end of the motor shaft, the second bearing is pressed into the inner wall of the inner shell of the casing, and the heat dissipation blades are installed at the rear end of the motor shaft; the drive plate is installed in the extension seat of the casing, and the left and right ends of the rear cover extend forward and abut against the drive plate; an air outlet connecting block is arranged at the rear end of the extension seat of the casing, the air outlet connecting block connects the left and right sides of the rear cover, and the rear cover air outlet is arranged on the air outlet connecting block.

[0012] Compared with the prior art, the wet and dry dual-purpose dust suction fan of the utility model has an installation casing that completely isolates the airflow entering the impeller from the motor drive cavity. When the dust suction fan is used in water and dust suction equipment, the airflow carrying water vapor flows through the first air duct to further assist the motor in dissipating heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional schematic diagram of this embodiment. DETAILED DESCRIPTION

[0014] The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings.

[0015] Figure 1 The figure shows a schematic diagram of the structure of the utility model, in which the figure marks are: mounting casing 1, casing inner casing 1a, casing outer casing 1b, casing extension seat 2, first air duct 3, impeller 4, impeller hood 5, hood air inlet 5a, rear cover 6, rear cover air inlet 6a, air outlet connecting block 7, rear cover air outlet 7a, second air duct 8, drive plate 9, motor shaft 10, stator core 11, magnetic ring 12, first bearing 13, T-type cushion column 14, gasket 15, flange nut 16, heat dissipation fan blade 17, dynamic balancing block 18, skeleton 19, second bearing 20.

[0016] like Figure 1As shown, the wet and dry vacuum fan of the utility model includes an installation casing 1, which completely isolates the airflow entering the impeller 4 from the motor drive cavity, and utilizes the aluminum installation casing 1 and the airflow entering the impeller 4 to solve the heat dissipation problem of the motor, and the airflow formed by the rotation of the heat dissipation blades 17 to solve the heat dissipation problem of the drive plate 9.

[0017] The housing 1 includes an inner housing 1a and an outer housing 1b. A first air duct 3 is formed between the outer wall of the inner housing 1a and the inner wall of the outer housing 1b, through which air can pass. The air flows through the first air duct 3 to dissipate heat from the motor. An impeller hood 5 is installed at the front end of the outer housing 1b. An air hood air inlet 5a is arranged at the front end of the impeller hood 5. The air flows into the impeller 4 along the hood air inlet 5a and flows out through the first air duct 3.

[0018] The housing extension seat 2 is fixedly mounted at the rear end of the housing inner shell 1a, and the drive board 9 is mounted in the housing extension seat 2. A rear cover 6 is arranged directly behind the housing extension seat 2, and a rear cover air inlet 6a is arranged at the rear end of the rear cover 6, and airflow enters along the rear cover air inlet 6a. A second air duct 8 is formed between the rear end of the housing extension seat 2 and the rear cover 6, and the airflow dissipates heat from the drive board 9 through the second air duct 8. The left and right sides of the rear cover 6 are connected to the air outlet connection block 7, and the air outlet connection block 7 is connected to the housing extension seat 2. The air outlet connection block 7 is provided with a rear cover air outlet 7a, and the airflow flows out through the rear cover air outlet 7a.

[0019] The motor shaft 10 is rotatably mounted inside the casing inner shell 1a, and both ends of the motor shaft 10 extend out of the casing inner shell 1a. The stator core 11 is mounted on the frame 19, and after winding is completed, it is interference-mounted with the inner wall of the casing inner shell 1a. The casing inner shell 1a is made of aluminum material with good thermal conductivity, which is convenient for conducting the heat generated when the motor is working to the casing inner shell 1a through the stator core 11 for heat dissipation. The magnetic ring 12 is sleeved on the motor shaft 10, and a dynamic balancing block 18 is set at the front end of the magnetic ring 12. The dynamic balancing block 18 is mounted on the motor shaft 10. The dynamic balancing block 18 prevents the magnetic ring 12 from vibrating significantly when rotating.

[0020] The front end of the casing inner shell 1a is provided with a first bearing 13, a T-shaped column 14, a moving impeller 4, a gasket 15, and a flange nut 16, which are all sleeved on the front end of the motor shaft 10. The first bearing 13 is pressed into the inner wall of the casing inner shell 1a, the T-shaped column 14 is pressed into the outer wall of the casing inner shell 1a, the moving impeller 4 is installed at the front end of the T-shaped column 14, the gasket 15 is installed at the front end of the moving impeller 4, and the flange nut 16 is installed at the front end of the gasket 15.

[0021] The impeller 4 rotates, and the airflow entering the impeller 4 is diverted to the first air ducts 3 on both sides of the installation casing 1. The airflow containing water vapor flows through the first air duct 3 formed between the casing inner shell 1a and the casing outer shell 1b to further assist the motor in heat dissipation and solve the heat dissipation problem of the motor.

[0022] A second bearing 20 and a heat dissipation fan blade 17 are arranged at the rear end of the casing inner shell 1a. The second bearing 20 and the heat dissipation fan blade 17 are sleeved on the rear end of the motor shaft 10. The second bearing 20 is pressed into the inner wall of the casing inner shell 1a, and the heat dissipation fan blade 17 is installed outside the casing inner shell 1a. The impeller 4 rotates at a high speed to drive the heat dissipation fan blade 17 at the rear to rotate, and a suction force is generated at the heat dissipation fan blade 17. Due to the suction force, the outside air enters along the rear cover air inlet 6a, flows through the second air duct 8 to dissipate heat to the drive plate 9, and is discharged along the rear cover air outlet 7a, forming an air flow in and out cycle.

[0023] Since the airflow entering the impeller 4 will not enter the motor drive cavity, the dry and wet dust suction fan is prevented from absorbing water vapor for a long time and causing failures of components such as the drive plate 9, the stator core 11 wound with enameled wire, and the first bearing 13, thereby extending the service life of the dry and wet dust suction fan and ensuring safe operation of the equipment.

[0024] The best embodiment of the present invention has been explained, and various changes or modifications made by ordinary technicians in this field will not depart from the scope of the present invention.

Claims

1. A wet and dry dust suction fan, comprising a mounting housing (1), characterized in that: The mounting casing (1) comprises an inner casing (1a) and an outer casing (1b); a motor shaft (10), a stator core (11) and a magnetic ring (12) are mounted in the inner casing (1a); a moving impeller (4) is arranged at the front end of the inner casing (1a), and a moving impeller wind shield (5) is arranged at the front end of the outer casing (1b); a first air duct (3) is formed between the outer wall of the inner casing (1a) and the inner wall of the outer casing (1b).

2. The wet and dry dust suction fan according to claim 1 is characterized in that: A casing extension seat (2) is arranged at the rear end of the casing shell (1b), and a heat dissipation fan blade (17) is arranged at the rear end of the casing extension seat (2); a driving plate (9) is arranged at the rear end of the heat dissipation fan blade (17), and a rear cover (6) is arranged at the rear end of the driving plate (9).

3. The wet and dry dust suction fan according to claim 2 is characterized in that: The front end of the impeller wind shield (5) is provided with a wind shield air inlet (5a); the rear end of the rear cover (6) is provided with a rear cover air inlet (6a), and a second air duct (8) is formed between the rear end of the casing extension seat (2) and the rear cover (6).

4. The wet and dry dust suction fan according to claim 3 is characterized in that: The motor shaft (10) is installed in the casing inner shell (1a), the magnetic ring (12) is sleeved on the motor shaft (10), and the stator core (11) is installed on the frame (19). After winding, it is installed with interference fit on the inner wall of the casing inner shell (1a); a dynamic balancing block (18) is arranged in the casing inner shell (1a), and the dynamic balancing block (18) is installed on the motor shaft (10).

5. The wet and dry dust suction fan according to claim 4 is characterized in that: A first bearing (13), a T-shaped gasket column (14), a gasket (15), and a flange nut (16) are arranged at the front end of the casing inner shell (1a); the first bearing (13) is pressed into the inner wall of the casing inner shell (1a); the T-shaped gasket column (14) is pressed into the outer wall of the casing inner shell (1a); the impeller (4) is mounted at the front end of the T-shaped gasket column (14); the gasket (15) is mounted at the front end of the impeller (4); and the flange nut (16) is mounted at the front end of the gasket (15); and the impeller wind shield (5) is mounted at the front end of the casing outer shell (1b).

6. The wet and dry dust suction fan according to claim 5 is characterized in that: A second bearing (20) is arranged at the rear end of the motor shaft (10), the second bearing (20) is pressed into the inner wall of the casing inner shell (1a), and the heat dissipation blade (17) is installed at the rear end of the motor shaft (10); the drive plate (9) is installed in the casing extension seat (2), and the left and right ends of the rear cover (6) extend forward and abut against the drive plate (9); an air outlet connection block (7) is arranged at the rear end of the casing extension seat (2), the air outlet connection block (7) is connected to the left and right sides of the rear cover (6), and a rear cover air outlet (7a) is arranged on the air outlet connection block (7).

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