OSCILLATOR FOR STIRRING AND VIBRATION OF SPONGE ABRASIVE BLAST

Description

FIELD OF TECHNOLOGY

The present disclosure relates to the technical field of sponge abrasive blasting machines.

BACKGROUND

Sponge abrasive blast is sprayed out under the action of a high-pressure airflow, so that rust removal treatment on a surface of an object can be realized. Because the sponge abrasive blast is fine and soft, the sponge abrasive blast is not prone to flow out off the blast tank and into a blast pipe when it is placed in a tank. Traditionally, in order to solve the problem of unsmooth discharging of the sponge abrasive blast, a screw rod propulsion structure is adopted, but it is not conducive to deliver all the sponge abrasive out of blast tank into the blasting hose. Only the adjacent sponge abrasive surrounding the screw rod propulsion structure is delivered into blast pipe. The others attached on the wall and corner of tank.

SUMMARY

To sum up, an objective of the present disclosure is to provide an oscillator for stirring and vibration of sponge abrasive during the blasting, to overcome the technical deficiencies of a screw rod propulsion structure adopted by an existing sponge abrasive blasting machine.

In order to overcome the technical deficiencies mentioned above, a technical solution adopted is as follows.

An oscillator for stirring and vibration of sponge abrasive blast, comprising a tank, a stirrer disposed in the tank and a power mechanism for driving the stirrer, wherein the stirrer comprises a drive shaft in a flat strip-shaped structure, an upper end of the drive shaft is in transmission connection with the power mechanism, a bottom end of the drive shaft is inserted into a discharge channel of the tank, and each side wall of the drive shaft is connected with more than two flexible stirring arms in spring structures.

As a technical solution for further defining the present disclosure:

The drive shaft includes that at least more than one connector is welded and fixed to each side wall in front, back, left and right directions of the drive shaft, and each connector is sleeved with one flexible stirring arm in the spring structure.

Further, the flexible stirring arms at least comprise a bottom layer of stirring arms, a middle layer of stirring arms and an upper layer of stirring arms; each layer of stirring arms comprises stirring arms pairwise distributed on the opposite two side walls of the drive shaft; and at least an included angle between the bottom layer of stirring arms and the drive shaft is less than or equal to 90 degrees and more than 45 degrees.

The middle layer of stirring arms comprises three pairs of stirring arms connected to three positions of the drive shaft at different heights.

One ends of the flexible stirring arms are welded and fixed to the drive shaft, and the other ends of the flexible stirring arms are in clearance fit with the inner side wall of the tank.

The power mechanism is a motor that drives the stirrer to rotate back and forth.

The present disclosure has the beneficial effects that: the stirrer of the present disclosure adopts the drive shaft in a flat strip-shaped structure, so that all the sponge abrasive in the blast tank become incompact and downward moving under air pressure with rotation of the drive shaft, and meanwhile, under the stirring and vibration of more than two flexible stirring arms in the spring structures connected to each side wall of the drive shaft, the discharging is smooth and thorough.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective structural diagram of the present disclosure;

FIG. 2 is a sectional structural diagram of the present disclosure;

FIG. 3 is a perspective structural diagram of a stirrer of the present disclosure;

FIG. 4 is an exploded schematic structural diagram of the stirrer of the present disclosure.

DESCRIPTION OF THE EMBODIMENTS

A structure of the present disclosure will be further described with reference to the accompanying drawings and preferred embodiments of the present disclosure.

Referring to FIGS. 1 to 4, an oscillator for stirring and vibration of sponge abrasive blast disclosed by the present disclosure comprises a tank 1, a stirrer 2 disposed in the tank 1, and a power mechanism for driving the stirrer, wherein the tank 1 is used for storing sponge abrasive blast, and the sponge abrasive blast is discharged from a discharge channel 11 at a bottom of the tank 1 into an airflow pipeline under the stirring of the stirrer 2. The stirrer 2 comprises a drive shaft 21 in a flat strip-shaped structure, an upper end of the drive shaft 21 is in transmission connection with the power mechanism, a bottom end of the drive shaft 21 is inserted into the discharge channel 11 of the tank 1, the discharge channel 11 is vertically communicated with an airflow channel, and each side wall of the drive shaft 21 is connected with more than two flexible stirring arms 22 in spring structures. The flexible stirring arms 22 in the spring structures can stir the sponge abrasive blast in the tank 1 to avoid caking.

In order to make the stirring fully uniform, at least one connector 211 is welded and fixed to each side wall in the front, back, left and right directions of the drive shaft 21, and each connector 211 is sleeved with one flexible stirring arm 22 in the spring structure. Further, the flexible stirring arms at least comprise a bottom layer of stirring arms, a middle layer of stirring arms and an upper layer of stirring arms; each layer of stirring arms comprises stirring arms pairwise distributed on the opposite two side walls of the drive shaft; at least an included angle between the bottom layer of stirring arms and the drive shaft is less than or equal to 90 degrees and more than 45 degrees, the specific angle depends on an inclination angle of a bottom surface of the tank 1, and an optimal solution is that the bottom layer of stirring arms is arranged in parallel with the bottom surface of the tank 1. When the tank 1 is relatively deep, the middle layer of stirring arms comprises three pairs of stirring arms connected to three positions of the drive shaft at different heights, or more pairs of stirring arms.

One ends of the flexible stirring arms are preferably welded and fixed to the drive shaft 21, and the other ends of the flexible stirring arms are in clearance fit with the inner side wall of the tank.

The power mechanism is preferably a motor that drives the stirrer to rotate back and forth. For example, under the action of the motor, the stirrer can rotate 90 degrees in a forward direction and then rotate 90 degrees in a reverse direction, so that excessive bending and damage of the flexible stirring arms 22 can be effectively avoided, and at the same time, the sponge abrasive blast can be better vibrated and stirred. When a wide surface of the drive shaft 21 in the flat strip-shaped structure is perpendicular to the airflow pipeline, a part of the sponge abrasive blast is bounced into the tank 1 by an airflow through the discharge channel 11 and a sponge abrasive adhered to or stuck in corner positions are blown off, so that the discharging is smooth and thorough. That is, one ends of the flexible stirring arms 22 in the spring structures are fixedly connected with the drive shaft 21, so that an overall structure of the stirrer 2 is an inverted cone structure. The flexible stirring arms 22 in the spring structures have variable moment characteristics. When the tank 1 is filled with the sponge abrasive and the pressure is increased by compaction, the flexible stirring arms 22 will be greatly bent under large resistance, the moment arm is reduced and continuous left-right stirring is realized. When the flexible stirring arms 22 are bent and straightened, the sponge abrasive blast is pulled around the drive shaft 21 in the flat steel structure, so that the sponge abrasive blast is continuously delivered downwards along the drive shaft 21, thereby achieving continuous delivery of the sponge abrasive blast and uninterrupted output of the sponge abrasive blast.