CN205363456U - Polisher from dust collection structure - Google Patents

Abstract

A self-cleaning structure of a grinding machine, including a motor, a casing, a motor shaft, a gear assembly, a grinding disc, an output shaft connected to the center of the grinding disc, and a protective cover for protecting the grinding disc, wherein the motor is installed on the In the casing, the motor shaft drives the output shaft to rotate through the meshing of the gear assembly, and then drives the grinding disc to rotate. A dust chamber communicating with the outside is formed between the protective cover and the grinding disc, and also includes a A blade chamber, the blade chamber includes dust suction blades, an upper blade cover and a lower blade cover, the dust suction blade is fixedly connected to the motor shaft, and the blade chamber and the dust chamber are connected by dust suction Hose connection. The utility model has the function of self-dust suction and good dust discharge effect.

Description

Self-cleaning structure of a grinder

Technical field:

The utility model relates to a grinding machine, in particular to a self-dusting structure of the grinding machine.

Background technique:

The grinding machine is an electric tool powered by electricity, which drives the sand sheet on the end surface of the sand disc to rotate at high speed to grind and clean the wall surface. This grinding method is far more efficient than the manual grinding method, but a large amount of dust will be generated during the grinding process, which seriously affects the health of the operator and also pollutes the environment. Therefore, people connect a vacuum cleaner to the grinding machine, which can absorb the dust generated during the grinding process, reduce environmental pollution during operation, and ensure that the dust does not affect the operator's body. In the prior art, the structure in which a vacuum cleaner is externally connected to the grinding machine can reduce environmental pollution during operation and ensure that the dust does not affect the operator's body, but its structure is complicated and the volume is large, which brings a lot of trouble to the operator. Inconvenience, in addition, on the grinding machine, there is a vacuum cleaner, which improves the production cost. In view of this, people in the industry have developed a wall grinder with a dust-absorbing function that integrates a grinder and a vacuum cleaner. The existing grinder has a dust-absorbing function while grinding, and there is no need to connect an additional vacuum cleaner. It has been reduced, but due to the unreasonable structure of its own structure, it specifically means that the dust collection effect is not good, which affects the grinding effect; in addition, this traditional grinding machine uses a brush motor, relying on the cooperation of carbon brushes and commutators Realizing reversing requires carbon brushes to work, but carbon brushes are vulnerable parts. After a period of use, carbon brushes need to be replaced to continue to work. There are problems of frequent replacement, low service life, inconvenient, and unenvironmental protection. Therefore, it is necessary to improve it.

Utility model content:

The purpose of the invention of the utility model is to overcome the deficiencies of the above-mentioned prior art, and provide a self-dusting structure of a grinding machine with reasonable structure, convenient and comfortable operation, and low production cost.

In order to realize the above-mentioned purpose of the invention, the utility model adopts the following technical solutions:

A self-cleaning structure of a grinding machine, including a motor, a casing, a motor shaft, a gear assembly, a grinding disc, an output shaft connected to the center of the grinding disc, and a protective cover for protecting the grinding disc, wherein the motor is installed on the In the casing, the motor shaft drives the output shaft to rotate through the meshing of the gear assembly, and then drives the grinding disc to rotate. A dust chamber communicating with the outside is formed between the protective cover and the grinding disc, and also includes a A blade chamber, the blade chamber includes dust suction blades, an upper wind blade cover, a lower wind blade cover and a windshield ring, the windshield ring is arranged between the upper wind blade cover and the lower wind blade cover, and the dust suction The fan blades are arranged in the windshield ring, the dust suction fan blades are fixedly connected to the motor shaft, and the fan blade chamber communicates with the dust chamber through a dust suction hose.

Further, the blade chamber is arranged on any one of the front side, the rear side, the left side, the right side, the upper side and the lower side of the motor.

Furthermore, a dust outlet pipe is provided on the fan blade chamber, and the axis of the dust suction fan blade is arranged perpendicular to the dust outlet pipe.

Further, the blade chamber further includes a windshield ring, the windshield ring is arranged between the upper blade cover and the lower blade cover, and the dust suction blade is arranged inside the windshield ring.

Further, the motor is a brushless motor.

Further, it also includes a brushless motor shaft bearing and a brushless motor shaft bearing seat, the brushless motor shaft bearing is arranged on the brushless motor shaft bearing seat and cooperates with the brushless motor shaft.

Compared with the prior art, the utility model has the following advantages:

1. It has the function of dust collection itself, no need for an external vacuum cleaner, which makes the structure simple, small in size, easy to operate, and low in production costs. The wind is out, the wind pressure is high, and the dust is conveniently discharged, so that the dust discharge effect is good.

2. Since the traditional brushed motor is changed to a brushless motor, there is no carbon brush, basically zero maintenance is achieved, it is very convenient to use, and at the same time effectively prolongs the service life. High operating efficiency at high torque, and high torque at low speed, greatly improving work efficiency.

Description of drawings:

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a sectional view of the utility model.

Fig. 3 is an exploded view of the utility model.

detailed description:

Referring to Fig. 1 to Fig. 3, according to the self-cleaning structure of a grinding machine provided by the utility model, it includes a motor, a casing 2, a motor shaft 3, a gear assembly 4, a grinding disc 5, and an output connected to the center of the grinding disc 5 Shaft 6, protective cover 7 protecting the grinding disc 5, wherein the motor is installed in the casing 2, the motor shaft 3 drives the output shaft 6 to rotate through the engagement of the gear assembly 4, and then drives the grinding disc 5 to rotate, the protective cover 7 and the grinding disc Form the dust chamber 8 that communicates with the outside between 5, also comprise a fan blade chamber 9, fan blade chamber comprises dust suction fan blade 10, upper wind blade cover 11 and lower wind blade cover 12, and dust suction fan blade 10 is fixed with motor shaft 3 Connect, the fan blade chamber 9 communicates with the dust chamber 8 through the dust suction hose 14. It has the function of dust collection itself, no external vacuum cleaner is needed, which makes the structure simple, small in size, convenient in operation and low in production cost.

The blade chamber 9 is arranged on any one of the front side, the rear side, the left side, the right side, the upper side and the lower side of the motor. Preferably, in this embodiment, the blade chamber 9 is arranged on the upper side of the motor.

Preferably, a dust outlet pipe 15 is also provided on the blade chamber 9, and the dust suction blade 10 and the dust outlet pipe 15 are arranged in the same direction, and the air outlet mode of the dust suction blade 10 is a centrifugal air outlet, and the wind pressure is high. The dust removal is convenient, making the dust removal effect better.

Preferably, the blade chamber 9 further includes a windshield ring 13 , the windshield ring 13 is arranged between the upper blade cover 11 and the lower blade cover 12 , and the dust suction blade 10 is arranged inside the windshield ring 13 .

Preferably, the motor is a brushless motor 1 . Because it is designed as a brushless motor 1 without carbon brushes, it basically achieves zero maintenance and is very convenient to use, and at the same time effectively prolongs its service life. In addition, it can also easily achieve high speed and high operating efficiency at high speed and low torque. There is high torque at low speed, which greatly improves work efficiency.

Preferably, it also includes a brushless motor shaft bearing and a brushless motor shaft bearing seat, the brushless motor shaft bearing is arranged on the brushless motor shaft bearing seat and cooperates with the brushless motor shaft.

The working principle of the utility model is: the brushless motor 1 provides power to make the motor shaft 3 rotate, the motor shaft 3 drives the output shaft 6 to rotate through the meshing of the gear assembly 4, and then drives the grinding disc 5 to rotate at a high speed, and the grinding disc 5 contacts the wall surface Carry out grinding and cleaning afterward, meanwhile, the dust-absorbing fan blade 10 that is fixed on the motor shaft 3 also rotates at a high speed, and the dust-absorbing fan blade 10 discharges the air in the fan blade chamber 9 to form a higher air pressure difference, and the air in the dust chamber 8 The dust is sucked into the fan blade chamber through the dust suction hose 14 together with the air, and is discharged through the dust outlet pipe 15.

The above are only preferred embodiments of the present utility model, and should not limit the scope of the utility model implementation with this, that is, all simple equivalent changes made according to the utility model patent application scope and utility model description content and modification, all still belong to the scope covered by the utility model patent.

Claims (6)

1. the self-dust-suction structure of a polisher, including motor, casing, motor shaft, gear assembly, polishing pad, it is connected to the output shaft of polishing pad central authorities, the protective cover of protection polishing pad, wherein, described motor is arranged in described casing, described motor shaft drives described output shaft rotation by the engagement of described gear assembly, then described polishing pad is driven to rotate, it is characterized in that: between described protective cover and polishing pad, form the dust room being in communication with the outside, also include a fan blade room, described fan blade room includes dust suction fan blade, upper blade cover and lower blade cover, described dust suction fan blade is fixing with described motor shaft to be connected, described fan blade room is connected by hose with described dust room.

2. the self-dust-suction structure of a kind of polisher according to claim 1, it is characterised in that: described fan blade room is arranged on any side in the front side of described motor, rear side, left side, right side, upside, downside.

3. the self-dust-suction structure of a kind of polisher according to claim 1, it is characterised in that: being additionally provided with a dust outlet tube on described fan blade room, the axis of described dust suction fan blade and described dust outlet tube are vertically arranged.

4. the self-dust-suction structure of a kind of polisher according to claim 1, it is characterised in that: described fan blade room also includes a wind loop, and described wind loop is arranged between described upper blade cover and lower blade cover, and described dust suction fan blade is arranged in described wind loop.

5. the self-dust-suction structure of a kind of polisher according to claim 1, it is characterised in that: described motor is brushless electric machine.

6. the self-dust-suction structure of a kind of polisher according to claim 5, it is characterized in that: also include brushless electric machine axle bearing and brushless electric machine bearing housing, described brushless electric machine axle bearing is arranged on described brushless electric machine bearing housing and coordinates with described brushless electric machine axle.