Wall type axial flow fan convenient to disassemble

Abstract

The utility model relates to the field of axial flow fans, in particular to a wall type axial flow fan convenient to disassemble. The wall type axial flow fan convenient to disassemble comprises an air cylinder, a support mechanism is arranged in the air cylinder, the support mechanism comprises a cylinder end support and a machine end support, the machine end support is detachably installed on the cylinder end support, a motor is arranged on the machine end support, and an impeller assembly is arranged at one end of the motor.

Description

Technical Field

[0001] The utility model relates to the field of axial flow fans, in particular to a wall-type axial flow fan which can be easily disassembled. Background Art

[0002] In the current use of industrial plants in various industries, many plants will produce pollutants such as high temperature, high humidity, harmful gases, explosives and dust, which affect the working environment or storage environment. Therefore, in order to meet the use needs of various types of plants, industrial plants must be able to ensure the health and safety of employees, prevent chemical leakage, reduce dust concentration, control temperature and humidity, etc., and take preventive factors into account. The most effective and economical method currently adopted by various industries is to use ventilation systems to control the air quality problems in plants.

[0003] The most common ventilation structure used in industrial plants is the wall-mounted axial flow fan for ventilation, because this installation method is to bury the fan in the wall, which will not occupy the space in the plant, and the structure is simple. For example, the fans of the conventional island and BOP of nuclear power plants basically adopt this structure installation method. Because the ventilation medium of the fans in industrial plants is mixed with other gases or particulate dust, the daily maintenance frequency and failure frequency are also high, so the speed and reliability of fan maintenance and replacement are particularly important;

[0004] At present, the mainstream wall-mounted axial flow fans in the industry use B30 structure motors, which are fixed to the motor at one end and the wind tube at the other end through three motor brackets. Since the fan is installed in the wall, if the motor or impeller needs to be replaced, the relevant components can only be removed one by one at the fan station. During the disassembly process, there will be friction between the motor bracket and the wind tube, which may damage the paint on the surface of the wind tube. When reinstalling, it is necessary to carefully align the mounting holes on the original wind tube and adjust the position of the gasket to ensure that the concentricity of the motor and the wind tube can meet the clearance requirements between the impeller and the wind tube. This greatly increases the difficulty of operation and causes repeated adjustments when reinstalling a fan. Summary of the invention

[0005] The utility model aims to solve the disadvantage that the wall-type axial flow fan is inconvenient to repair and replace: to provide a structural form with simple structure and convenient disassembly. The specific scheme is as follows:

[0006] A conveniently disassembled wall-mounted axial flow fan comprises an air duct, wherein a support mechanism is arranged inside the air duct, wherein the support mechanism comprises a tube end support and a machine end support, wherein the machine end support is detachably mounted on the tube end support, wherein a motor is arranged on the machine end support, and wherein an impeller assembly is arranged at one end of the motor.

[0007] The barrel end bracket is mounted on the machine end bracket by bolts.

[0008] A backing plate is arranged between the inner wall of the wind tube and the tube end bracket.

[0009] One end of the wind tube is provided with a rainproof elbow.

[0010] There are three bracket mechanisms, which are evenly arranged on the inner wall of the wind tube.

[0011] The cylinder end bracket and the wind cylinder are fixed by bolts, and the bolts are welded to the wind cylinder, and the bolts are fixed in the installation direction from the outside to the inside of the wind cylinder.

[0012] The machine end bracket is fixed to the motor by bolts.

[0013] The utility model has the following advantages:

[0014] 1. Simple structure: The mounting bracket mechanism consists of a machine-end bracket and a cylinder-end bracket. The machine-end bracket is fixedly connected to the motor by bolts, and the cylinder-end bracket is also fixed to the wind tube by bolts. The bolts are fixed from the outside of the wind tube to the inside, and the bolts are welded and fixed to the wind tube. The machine-end bracket and the cylinder-end bracket are fixed by bolts;

[0015] 2. Easy to disassemble: The bracket mechanism is designed to be segmented, namely the machine end bracket and the barrel end bracket. When disassembling and repairing, the connection between the machine end bracket and the barrel end bracket can be disconnected, and the motor and the machine end bracket can be removed together. The barrel end bracket does not need to be removed in the barrel;

[0016] 3. High concentricity: Because the cylinder end bracket does not need to be disassembled in the wind tube, the concentricity of the motor during reinstallation is basically the same as before disassembly. When reinstalling, there is no need to adjust the pad to control the gap between the impeller and the wind tube, which reduces the cumbersome reinstallation steps;

[0017] 4. Reduce other derivative work: The improved structure will not damage the surface coating inside the air duct after installation, reducing the need for repainting after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a conveniently disassembled wall-type axial flow fan of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of a conveniently disassembled wall-type axial flow fan of the utility model;

[0020] The numbers are as follows: 1. Air cylinder; 2. Impeller assembly; 3. Motor; 4. Machine end bracket; 5. Cylinder end bracket; 6. Pad; 7. Bolt; 8. Rainproof elbow. DETAILED DESCRIPTION

[0021] Combine the following Figure 1-2 For further explanation:

[0022] A wall-type axial flow fan which can be easily disassembled comprises a wind tube 1. A support mechanism is arranged inside the wind tube 1. The support mechanism comprises a tube end support 5 and a machine end support 4. The machine end support 5 is detachably mounted on the tube end support 5. A motor 3 is arranged on the machine end support 5. An impeller assembly 2 is arranged at one end of the motor 3.

[0023] The cylinder end bracket 5 is mounted on the machine end bracket 4 by bolts 7 .

[0024] A backing plate 6 is provided between the inner wall of the air cylinder 1 and the cylinder end bracket 5 .

[0025] A rainproof elbow 8 is provided at one end of the air duct 1.

[0026] There are three bracket mechanisms, which are evenly arranged on the inner wall of the wind tube 1.

[0027] The cylinder end bracket 5 and the wind cylinder 1 are fixed by bolts 7, and the bolts 7 are welded to the wind cylinder 1, and the bolts 7 are fixed in the installation direction from the outside of the wind cylinder 1 to the inside.

[0028] The machine end bracket 4 is fixed to the motor 3 by bolts 7 .

[0029] The disassembly and reassembly steps of the utility model are as follows:

[0030] (1) From the indoor side, first remove the fasteners fixing the impeller assembly 2 on the motor 3 shaft, and take out the impeller assembly 2 horizontally;

[0031] (2) Remove the three bracket mechanisms one by one. At this time, the machine-end bracket 4 and the tube-end bracket 5 are in a separated state. Since the overall dimensions of the machine-end bracket 4 and the motor 3 are much smaller than the inner diameter of the wind tube 1, the motor 3 and the machine-end bracket 4 can be directly taken out horizontally, and the tube-end bracket 5 does not need to be removed from the wind tube 1;

[0032] (3) When reinstalling, place the motor 3 (including the machine end bracket 4 assembled with the motor 3) horizontally into the wind tube 1, and first align the bottom tube end bracket 5 with the connecting hole of the machine end bracket 4, and fix them with bolts 7. Then, fix the remaining two tube end brackets 5 with the machine end bracket 4 one by one with bolts 7, and the installation of the motor 3 is completed.

[0033] (4) Install the impeller assembly 2 onto the motor 3 shaft, completing the fan reinstallation work;

[0034] The above description is not a limitation of the design of the utility model, and the design of the utility model is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the design of the utility model also fall within the protection scope of the design of the utility model.

Claims

1. A wall-type axial flow fan that is easy to disassemble, characterized in that: It comprises a wind tube, wherein a support mechanism is arranged inside the wind tube, wherein the support mechanism comprises a tube end support and a machine end support, the machine end support is detachably mounted on the tube end support, a motor is arranged on the machine end support, and an impeller assembly is arranged at one end of the motor.

2. A conveniently disassembled wall-mounted axial flow fan as claimed in claim 1, characterized in that: The barrel end bracket is mounted on the machine end bracket by bolts.

3. The conveniently disassembled wall-type axial flow fan according to claim 1, characterized in that: A backing plate is arranged between the inner wall of the wind tube and the tube end bracket.

4. The conveniently disassembled wall-type axial flow fan according to claim 1, characterized in that: One end of the wind tube is provided with a rainproof elbow.

5. The conveniently disassembled wall-type axial flow fan according to claim 1, characterized in that: There are three bracket mechanisms, which are evenly arranged on the inner wall of the wind tube.

6. The conveniently disassembled wall-type axial flow fan according to claim 1, characterized in that: The cylinder end bracket and the wind cylinder are fixed by bolts, and the bolts are welded to the wind cylinder, and the bolts are fixed in the installation direction from the outside to the inside of the wind cylinder.

7. The conveniently disassembled wall-type axial flow fan according to claim 1, characterized in that: The machine end bracket is fixed to the motor by bolts.

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