CN213243707U

CN213243707U - Hollow shaft low-voltage brushless direct current motor with water passing and air passing functions

Info

Publication number: CN213243707U
Application number: CN202022531159.XU
Authority: CN
Inventors: 徐康
Original assignee: Changzhou Zhongzhi Electrical Machinery Co ltd
Current assignee: Changzhou Zhongzhi Electrical Machinery Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-05-18
Anticipated expiration: 2030-11-05

Abstract

The utility model discloses a hollow shaft low pressure DC brushless motor with cross water function of breathing in belongs to brushless motor technical field, including motor stator and electric motor rotor, motor stator one end installation front end housing, other end installation motor rear end cap, be provided with protecgulum elasticity oil blanket and fore-stock in the front end housing, install back elasticity oil blanket and rear bearing in the rear end housing, the rear end housing is kept away from one side of waterproof stator and is installed the back shroud, waterproof joint is installed to one side of back shroud, install waterproof stator between front end housing and the rear end cap, preceding sealing washer and back shroud sealing washer are installed respectively to the both ends of waterproof stator, it has hollow rotating shaft to run through on the motor rotor subassembly. The utility model discloses make the motor can normally work in the environment that has water or flush fluid, traditional flush pump structure has been cancelled in the design of especially hollow rotating shaft, the utility model has the advantages of the design is advanced, simple reasonable, reliable processing property is good.

Description

Hollow shaft low-voltage brushless direct current motor with water passing and air passing functions

Technical Field

The utility model relates to a brushless DC motor especially relates to a hollow shaft low pressure brushless DC motor with cross water function of breathing freely, belongs to brushless motor technical field.

Background

At present, the direct current brushless motor is widely applied to the industries of automation control, medical instruments, textile machinery, machining and the like, and the direct current brushless motor belongs to an energy-saving and environment-friendly motor due to small volume, high power and high efficiency, and has higher use occasion conditions. With the development of application science and technology, in some occasions with severe use conditions, such as industries of glass cover drilling, drilling machines and the like, in the drilling industry at present, a drill bit is additionally designed on a front output shaft of a motor, and a set of flushing pump is additionally used for matching when the drill bit is used for drilling. And at present, the traditional three-phase alternating current asynchronous motor is used in the industry, and the phenomena of high-voltage electric leakage, rust of a front bearing of the motor, asynchronous waste of water or cleaning liquid of a flushing pump and motor drilling, and the like easily occur when the motor is contacted with water and cleaning liquid for a long time. In a short time, the motor is easy to be damaged seriously, so that equipment is damaged, and great loss is caused.

How to improve the use of low pressure DC brushless motor in this trade becomes the problem that needs to solve urgently, some have proposed to design higher protection level on three-phase AC asynchronous motor, if increase the protection casing on motor housing, because three-phase AC asynchronous motor self is too big, have designed the protection casing volume bigger for the design cost is higher, this design is not a scientific design.

A plurality of domestic manufacturers put forward new technical requirements, and a series of design requirements such as lower motor voltage, smaller volume, improved protection grade, synchronization of water and cleaning fluid during drilling are required. According to the requirements, the low-voltage requirement is met, the voltage is controlled within 24VDC, the diameter of the motor is controlled within 60mm, the front cover, the rear cover and the motor body of the motor are protected, particularly, a rotating shaft of the motor is made into a hollow shaft, an original water pump is directly connected to the hollow shaft, and water and cleaning liquid are synchronous when the motor drills holes through an electric control system. The service life and the efficiency of the motor are greatly improved, so that the brushless motor of the type can be used in the glass cover drilling industry.

The utility model discloses the technical problem who requires to solve is: domestic traditional three-phase AC asynchronous motor and ordinary direct current low pressure brushless motor most protection level are lower to intake easily or the flush fluid, and all need to cooperate the flush pump cooperation to accomplish work in actual drilling work, have solved the motor through scientific design and have intake easily or the flush fluid, have cancelled the flush pump, provide a hollow shaft low pressure direct current brushless motor who has water and cross the gas function.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hollow low-pressure shaft brushless DC motor with cross water and cross gas function, through having designed waterproof seal's structure, make the motor normally work in the environment that has water or flush fluid, especially the design of hollow rotating shaft has cancelled traditional flush pump structure, the utility model has the advantages of the design is advanced, simple reasonable, reliable processing property is good.

The purpose of the utility model can be achieved by adopting the following technical scheme:

the utility model provides a hollow shaft low pressure DC brushless motor with cross water and cross gas function, including motor rotor subassembly and the front end housing of motor rotor subassembly one end installation with the rear end housing of the installation of the motor rotor subassembly other end, be provided with protecgulum elasticity oil blanket and front bearing in the front end housing, install back elasticity oil blanket and rear bearing in the rear end housing, the rear end housing is kept away from one side of waterproof stator and is installed the back shroud, water joint is installed to one side of back shroud, the front end housing with install waterproof stator between the rear end housing, preceding sealing washer and back cover sealing washer are installed respectively to the both ends of waterproof stator, it has hollow rotating shaft to run through on the motor rotor subassembly.

Preferably, a stainless steel screw penetrates through one side of the front end cover, and two ends of the waterproof stator are respectively fixed between the front end cover and the rear end cover through the stainless steel screws.

Preferably, a layer of epoxy resin is arranged on the surface of the waterproof stator.

Preferably, the rear end cover is electrically connected with an electronic circuit board.

Preferably, a rear cover sealing ring is installed inside the rear cover.

Preferably, the front cover elastic oil seal is arranged on the outer side of the front bearing, and the rear elastic oil seal is arranged on the outer side of the rear bearing.

Preferably, the hollow rotating shaft penetrates through the front cover elastic oil seal, the motor rotor assembly, the rear end cover and the rear cover.

Preferably, a through hole is formed in a rotating shaft of the motor rotor, and the through hole and the rotating shaft are subjected to electroplating treatment.

The utility model has the advantages of:

the utility model provides a pair of hollow shaft low pressure DC brushless motor with cross water and cross gas function makes the motor normally work in the environment that has water or flush fluid, and the design of especially hollow rotating shaft has cancelled traditional flush pump structure, the utility model has the advantages of the design is advanced, simple reasonable, reliable processing property is good.

Drawings

Fig. 1 is a front sectional view of a preferred embodiment of a hollow shaft low voltage dc brushless motor having a water and air passing function according to the present invention.

In the figure: 1-front end cover, 2-front bearing, 3-front sealing cover, 4-front cover elastic oil seal, 5-waterproof stator, 6-stainless steel screw, 7-rear cover sealing ring, 8-rear end cover, 9-rear bearing, 10-rear cover, 11-rear elastic oil seal, 12-hollow rotating shaft, 13-waterproof joint, 14-rear cover sealing ring and 15-motor rotor component.

Detailed Description

In order to make the technical solutions of the present invention clearer and clearer for those skilled in the art, the present invention will be described in further detail with reference to the following embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1, the hollow shaft low-voltage dc brushless motor with water passing and air passing functions provided by the present embodiment includes a motor rotor assembly 15 and a front end cover 1 installed at one end of the motor rotor assembly 15 and a rear end cover 8 installed at the other end of the motor rotor assembly 15, a front cover elastic oil seal 4 and a front bearing 2 are provided in the front end cover 1, a rear elastic oil seal 11 and a rear bearing 9 are installed in the rear end cover 8, a rear cover 10 is installed at one side of the rear end cover 8 far away from the waterproof stator 5, a waterproof joint 13 is installed at one side of the rear cover 10, the front end cover 1 and the waterproof stator 5 is installed between the rear end covers 8, a front seal ring 3 and a rear seal ring 7 are installed at two ends of the waterproof stator 5 respectively, and a hollow rotating shaft 12 penetrates through the motor rotor assembly.

In this embodiment, a stainless steel screw 6 penetrates through one side of the front end cover 1, and two ends of the waterproof stator 5 are respectively fixed between the front end cover 1 and the rear end cover 8 through the stainless steel screw 6.

In this embodiment, a layer of epoxy resin is disposed on the surface of the waterproof stator 5 to provide a waterproof function.

In this embodiment, the electronic circuit board is electrically connected to the rear end cap 8, and the rear cover 10 and the rear end cap 8 are provided with the rear cover sealing ring 14 so that water or cleaning liquid cannot permeate into the electronic circuit board mounted on the rear end cap 8.

In the present embodiment, the front cover elastic oil seal 4 is mounted on the outer side of the front bearing 2, and the rear elastic oil seal 11 is mounted on the outer side of the rear bearing 9.

The elastic oil seal 11 and the bearing designed on the rear end cover 8 can enable the motor to be manufactured into a double-sided output shaft.

As shown in fig. 1, the operation process of the hollow low-pressure shaft dc brushless motor with the function of passing water and air provided by this embodiment is as follows:

when the motor works in practice, a pipeline for introducing water or cleaning fluid is arranged at the rear end of the hollow rotating shaft 12, so that the water or the cleaning fluid can be effectively discharged from the through hole, and the waterproof cable joint 13 is arranged on the side surface of the rear cover 10, so that the water or the cleaning fluid cannot permeate into the motor; it has front end housing elastic oil seal 4 to design in the hollow pivot 12 play shaft hole of front end housing 1 makes water or washing liquid can not permeate to inside waterproof stator 5 between play shaft hole and hollow pivot 12, it makes water or washing liquid can not permeate in the middle of waterproof stator 5 and front end housing 1 to be equipped with front end sealing washer 3 between front end housing 1 and the waterproof stator 5, waterproof stator 5 surface scribbles one deck epoxy and plays waterproof role, after cover 10 and after cover 8 are equipped with after cover sealing washer 7 and make water or washing liquid can not permeate the electronic circuit board of installing on after cover 8, be equipped with after cover elastic oil seal 11 on the after cover 10, make water or washing liquid can not permeate to inside waterproof stator 5 between after shaft hole and hollow pivot 12.

The above description is only a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can replace or change the technical solution and the concept of the present invention within the scope of the present invention.

Claims

1. The utility model provides a hollow shaft low pressure DC brushless motor with cross water and cross gas function which characterized in that: including motor rotor subassembly (15) and front end housing (1) of motor rotor subassembly (15) one end installation with rear end housing (8) of motor rotor subassembly (15) other end installation, be provided with protecgulum elasticity oil blanket (4) and front bearing (2) in front end housing (1), install back elasticity oil blanket (11) and rear bearing (9) in rear end housing (8), rear end housing (8) are kept away from one side of waterproof stator (5) and are installed back shroud (10), water joint (13) are installed to one side of back shroud (10), front end housing (1) with install waterproof stator (5) between rear end housing (8), preceding sealing washer (3) and back lid sealing washer (7) are installed respectively to the both ends of waterproof stator (5), it has hollow shaft (12) to run through on motor rotor subassembly (15).

2. The hollow shaft low-voltage brushless direct current motor with the water and gas passing function according to claim 1 is characterized in that: stainless steel screws (6) penetrate through one side of the front end cover (1), and two ends of the waterproof stator (5) are respectively fixed between the front end cover (1) and the rear end cover (8) through the stainless steel screws (6).

3. The hollow shaft low-voltage brushless direct current motor with the water and gas passing function according to claim 1 is characterized in that: and a layer of epoxy resin is arranged on the surface of the waterproof stator (5).

4. The hollow shaft low-voltage brushless direct current motor with the water and gas passing function according to claim 1 is characterized in that: and the rear end cover (8) is electrically connected with an electronic circuit board.

5. The hollow shaft low-voltage brushless direct current motor with the water and gas passing function according to claim 1 is characterized in that: and a rear cover sealing ring (14) is arranged in the rear cover (10).

6. The hollow shaft low-voltage brushless direct current motor with the water and gas passing function according to claim 1 is characterized in that: the front cover elastic oil seal (4) is arranged on the outer side of the front bearing (2), and the rear elastic oil seal (11) is arranged on the outer side of the rear bearing (9).

7. The hollow shaft low-voltage brushless direct current motor with the water and gas passing function according to claim 1 is characterized in that: the hollow rotating shaft (12) penetrates through the front cover elastic oil seal (4), the motor rotor assembly (15), the rear end cover (8) and the rear cover (10).

8. The hollow shaft low-voltage brushless direct current motor with the water and gas passing function according to claim 1 is characterized in that: a through hole is formed in a rotating shaft of the motor rotor assembly (15), and the through hole and the rotating shaft are subjected to electroplating treatment.