Motor shaft for industrial air purifier

Abstract

This utility model discloses a motor shaft for an industrial air purifier, including a shaft body. The shaft body has a core mounting section for mounting a rotor core and a commutator mounting section located at one end of the core mounting section. Both the core mounting section and the commutator mounting section have multiple spaced-apart guide grooves on their peripheral walls, extending axially along the shaft body. Each guide groove has a tapered end. The cross-sectional diameter of the core mounting section is larger than that of the commutator mounting section. Compared with existing technologies, this utility model provides sufficient clamping force and reduces the likelihood of deformation of external components during installation.

Description

Technical Field

[0001] This utility model relates to a motor shaft for an industrial air purifier. Background Technology

[0002] In industrial production, workshop air often contains a large amount of particulate matter, formaldehyde, VOCs and other pollutants. VOCs, or volatile organic compounds, mainly consist of hydrocarbons, halogenated hydrocarbons, oxygenated hydrocarbons and nitrogenous hydrocarbons. They include benzene series compounds, organochlorides, Freon series, organic ketones, amines, alcohols, ethers, esters, acids and petroleum hydrocarbons, etc. If they are not effectively treated, they pose a certain threat to the health of production workers.

[0003] For example, Chinese utility model patent application number 201320442865.4 (authorization announcement number CN203370431U) discloses an air purifier, including a shell, a motor, a rotating shaft, a purification unit, and reinforcing parts; the shell is provided with an air inlet, an air outlet, and an impurity outlet; the motor is located outside the shell, and the rotating shaft is located inside the shell, with the motor connected to the rotating shaft to drive the rotating shaft to rotate; a bracket is provided below the rotating shaft; inside the shell, the purification unit, reinforcing parts, and a fan are fixed sequentially on the rotating shaft according to the airflow direction; the purification unit includes a disc and metal strips; the disc is fixed on the rotating shaft, and two or more metal strips are radially arranged and fixed around the disc, with the metal strips forming an angle of less than 90° with the rotating shaft near the air outlet; a baffle is provided between the metal strips and the air outlet, and the baffle is fixed on the shell; the impurity outlet is connected to a collection box through a pipe. The purifier of this utility model has a simple structure, small size, automatic cleaning capability, low cost, long lifespan, and high purification efficiency; however, the motor shaft of the purifier of this utility model is a bare rod, the shaft and rotor core are not installed firmly enough, the interlocking force is insufficient, and the components assembled with the motor shaft are prone to deformation during installation. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an industrial air purifier motor shaft with sufficient biting force and which is not easily deformed by external components during installation, in view of the above-mentioned technical status.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an industrial air purifier motor shaft, including a shaft body, characterized in that: the shaft body is provided with a core mounting section for mounting a rotor core and a commutator mounting section provided at one end of the core mounting section; the peripheral walls of the core mounting section and the commutator mounting section are provided with a plurality of guide grooves spaced apart from each other, the guide grooves extending along the axial direction of the shaft body; the end of each guide groove is provided with a tapered section; the cross-sectional diameter of the core mounting section is larger than the cross-sectional diameter of the commutator mounting section.

[0006] Preferably, one end of the shaft is provided with a connecting section for connecting to a connector, and the peripheral wall of the connecting section is provided with threads.

[0007] For ease of installation, preferably, the other end of the shaft is provided with a mounting groove. In use, a tool with a single-headed design is inserted into the mounting groove to fix the motor shaft and install other motor components.

[0008] Preferably, the shaft body further includes a first bearing mounting section and a second bearing mounting section that are spaced apart from each other for mounting bearings.

[0009] Preferably, the first bearing mounting section is located between the connecting section and the iron core mounting section, and the cross-sectional diameter of the first bearing mounting section is smaller than the cross-sectional diameter of the iron core mounting section.

[0010] To facilitate motor oil sealing and reduce air leakage, preferably, the shaft body is also provided with an oil seal section located between the first bearing mounting section and the connecting section.

[0011] Preferably, a transition section is provided at the connection between the oil seal section and the connecting section, and the cross-sectional diameter of the transition section is larger than that of the connecting section; the cross-sectional diameter of the transition section is smaller than that of the first bearing mounting section.

[0012] Preferably, the second bearing mounting section is located at one end of the commutator mounting section; a tool relief groove is provided at the connection between the second bearing mounting section and the commutator mounting section. The tool relief groove enables the corners to be cleared during the outer cylindrical grinding of the commutator mounting section and the second bearing mounting section, ensuring the accuracy of the bearing mounting position.

[0013] In order to achieve high torque and ensure the stability and reliability of output force, preferably, the shaft body is also provided with a pulley mounting section located at the other end of the second bearing mounting section, and the pulley mounting section is provided with a straight knurled structure adapted to the pulley.

[0014] Compared with the prior art, the advantages of this utility model are as follows: It is provided with a core mounting section and a commutator mounting section. The peripheral walls of the core mounting section and the commutator mounting section are provided with multiple guide grooves that are spaced apart from each other, which increases the friction and engagement force between the motor shaft and the external components, making the motor installed firmly; the ends of the guide grooves are provided with tapered sections, which allows the rotor core and commutator to be pressed in smoothly when the motor is installed, reducing the installation deformation of the rotor core and commutator, and preventing the commutator and rotor core from cracking during the pressing process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1The image shows a preferred embodiment of the present invention. The motor shaft of the industrial air purifier includes a shaft body 100, which, from the first end a to the second end b, sequentially includes a connecting section 4, a transition section 9, an oil seal section 8, a first bearing mounting section 6, an iron core mounting section 1, a commutator mounting section 2, a second bearing mounting section 7, a pulley mounting section 10, and a mounting groove 5.

[0018] The core mounting section 1 is used to install the rotor core; the commutator mounting section 2 is located at one end of the core mounting section 1 and is used to install the commutator. Both the core mounting section 1 and the commutator mounting section 2 have multiple spaced guide grooves 3 on their peripheral walls, which extend axially along the shaft body 100. Each guide groove 3 has a tapered section 31 at its end to facilitate the installation of the commutator and rotor core. The cross-sectional diameter of the core mounting section 1 is larger than that of the commutator mounting section 2.

[0019] The connecting section 4 is used to connect to the connector of the purifier and is located at one end of the shaft body 100. The connecting section 4 has an external thread on its peripheral wall, and the external thread specification of the connecting section is 1 / 4-28UNF-2A.

[0020] Mounting groove 5 is located at the other end of shaft body 100 and is used to mount motor shaft.

[0021] The first bearing mounting section 6 and the second bearing mounting section 7 are both used to mount bearings and are spaced apart from each other. A second relief groove 61 is provided at the connection between the first bearing mounting section 6 and the core mounting section 1, thereby achieving corner clearing during the outer cylindrical grinding of the first bearing mounting section 6. The first bearing mounting section 6 is located between the connecting section 4 and the core mounting section 1, and the cross-sectional diameter of the first bearing mounting section 6 is smaller than the cross-sectional diameter of the core mounting section 1. The second bearing mounting section 7 is located at one end of the commutator mounting section 2; a relief groove 71 is provided at the connection between the second bearing mounting section 7 and the commutator mounting section 2. The outer diameter of the second bearing mounting section 7 is 10±0.005mm, the surface roughness is Ra0.4um, and the roundness is 3um.

[0022] The oil seal section 8 is located between the first bearing mounting section 6 and the connecting section 4. A transition section 9 is provided at the connection between the oil seal section 8 and the connecting section 4. The cross-sectional diameter of the transition section 9 is larger than that of the connecting section 4, and the cross-sectional diameter of the transition section 9 is smaller than that of the oil seal section 8.

[0023] The pulley mounting section 10 is located at one end of the second bearing mounting section 7. The pulley mounting section 10 is provided with a straight-knurled structure adapted to the pulley to achieve high torque and ensure the stability and reliability of the output force. The retaining ring groove 101 is provided between the pulley mounting section 10 and the mounting groove 5 for installing an elastic retaining ring to achieve axial positioning of the pulley.

Claims

1. An industrial air purifier motor shaft, comprising a shaft body (100), characterized in that: The shaft (100) is provided with a core mounting section (1) for mounting the rotor core and a commutator mounting section (2) located at one end of the core mounting section (1). The peripheral walls of the core mounting section (1) and the commutator mounting section (2) are provided with a plurality of guide grooves (3) spaced apart from each other. The guide grooves (3) extend along the axial direction of the shaft (100). Each guide groove (3) has a tapered section (31) at its end. The cross-sectional diameter of the core mounting section (1) is larger than that of the commutator mounting section (2).

2. The industrial air purifier motor shaft according to claim 1, characterized in that: One end of the shaft (100) is provided with a connecting section (4) for connecting with a connector, and the peripheral wall of the connecting section (4) is provided with threads.

3. The industrial air purifier motor shaft according to claim 2, characterized in that: The other end of the shaft (100) is provided with a mounting groove (5).

4. The industrial air purifier motor shaft according to claim 2, characterized in that: The shaft body (100) also includes a first bearing mounting section (6) and a second bearing mounting section (7) that are spaced apart from each other for mounting bearings.

5. The industrial air purifier motor shaft according to claim 4, characterized in that: The first bearing mounting section (6) is located between the connecting section (4) and the iron core mounting section (1), and the cross-sectional diameter of the first bearing mounting section (6) is smaller than the cross-sectional diameter of the iron core mounting section (1).

6. The industrial air purifier motor shaft according to claim 5, characterized in that: The shaft body (100) is also provided with an oil seal section (8) located between the first bearing mounting section (6) and the connecting section (4).

7. The industrial air purifier motor shaft according to claim 6, characterized in that: A transition section (9) is provided at the connection between the oil seal section (8) and the connecting section (4). The cross-sectional diameter of the transition section (9) is larger than that of the connecting section (4); the cross-sectional diameter of the transition section (9) is smaller than that of the oil seal section (8).

8. The industrial air purifier motor shaft according to claim 4, characterized in that: The second bearing mounting section (7) is located at one end of the commutator mounting section (2); a tool relief groove (71) is provided at the connection between the second bearing mounting section (7) and the commutator mounting section (2).

9. The industrial air purifier motor shaft according to claim 8, characterized in that: The shaft body (100) is also provided with a pulley mounting section (10) located at the other end of the second bearing mounting section (7), and the pulley mounting section (10) is provided with a straight knurled structure adapted to the pulley.

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