Smoke and dust treatment apparatus for welding

Patent metadata

Field	Value
Publication number	US-11759739-B2
Application number	US-201916980407-A
Country	US
Kind code	B2
Filing date	Jun 14, 2019
Priority date	Jun 14, 2019
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

A smoke and dust treatment apparatus for welding, said apparatus comprising a polishing and dust extraction module and a smoke and dust purification module. The polishing and dust extraction module comprises a double-layer dust extraction cover (3), a protective cover (2), an industrial brush (4), a first air guide portion, a second air guide portion (24) and a drive motor (22), the drive motor (22) driving the industrial brush (4) to rotate at high speed to perform polishing. During welding and polishing, a mechanical arm (6) drives the double-layer dust extraction cover (3), and a suction hole (20) of the double-layer dust extraction cover (3) and a suction guide hole (19) on the industrial brush (4) simultaneously take in toxic gas and debris such as iron filings.

First claim

What is claimed is:

1. A smoke and dust treatment apparatus for welding comprises a polishing and dust extraction module and a smoke and dust purification module, wherein the smoke and dust purification module is disposed on one side of the polishing and dust extraction module and is communicated with the polishing and dust extraction module through an air guide hose;
the polishing and dust extraction module comprises a double-layer dust extraction cover, a protective cover, an industrial brush, first air guide portions, a second air guide portion and a drive motor, wherein the protective cover, the first air guide portions, the second air guide portion and the double-layer dust extraction cover are sequentially connected and are internally communicated, the industrial brush is disposed in the protective cover and is driven by the drive motor, which is disposed over the protective cover, to rotate to polish a workpiece;
wherein, the double-layer dust extraction cover comprises an outer layer, an inner layer and a gap layer defined by the outer layer and the inner layer, and has a necked end and an expanded end, and an end, away from the protective cover, of the second air guide portion is connected to the necked end of the inner layer of the double-layer air extraction cover;
wherein, the first air guide portions are multiple air guide iron columns which are distributed at a top of the protective cover in a circumferential direction, a rotary shaft supporting hole is formed in a center of an upper surface of the protective cover, the drive motor is fixedly mounted on the upper surface of the protective cover and is connected to the industrial brush through a rotary shaft penetrating through the rotary shaft supporting hole;
the smoke and dust purification module comprises a residual collection chamber, a smoke purification chamber, an exhaust fan and a gas discharge passage, wherein the smoke purification chamber is communicated with the residual collection chamber through an air guide iron pipe, the exhaust fan is disposed below the smoke purification chamber and is used to provide a negative pressure for delivering smoke and dust into the smoke and dust purification module from the polishing and dust extraction module, and the gas discharge passage is an L-shaped passage and is used to exhaust smoke purified by the smoke purification chamber to the atmosphere;
the residue collection chamber is a cavity formed with an air inlet and an air outlet, wherein the air outlet is located proximate to a bottom of the cavity, and a metal filter screen, a magnetic residue box and an electromagnetic chuck are disposed in the cavity; the metal filter screen is obliquely disposed below the air inlet, a periphery of the metal filter screen is fixedly connected to a side wall of the residue collection chamber, the electromagnetic chuck is fixedly disposed at a bottom of the residual collection chamber, and the magnetic residue box is disposed on the electromagnetic chuck;
the smoke purification chamber is sequentially provided with an inlet, a physical filter layer and an outlet, wherein the outlet is formed in a position, corresponding to the exhaust fan, of the bottom of the smoke purification chamber;
one end of the air guide iron pipe is connected to the air outlet of the residue collection chamber, and the other end of the air guide iron pipe is connected to the inlet of the smoke purification chamber;
one end of the air guide hose is connected to the necked end of the outer layer of the double-layer dust extraction cover and is communicated with the gap layer of the double-layer dust extraction cover, and the other end of the air guide hose is connected to the air inlet of the residue collection chamber;
the smoke and dust treatment apparatus for welding further comprises a control chamber, wherein the control chamber is in signal connection with a mechanical arm, the exhaust fan and the drive motor and is used to control the mechanical arm, the exhaust fan and the drive motor to work;
the control chamber configured to control the exhaust fan, drive motor and mechanism arm such that before welding, the mechanical arm moves to drive a welding gun head to enter a rigid sleeve and to stretch out of the industrial brush; when the mechanical arm drives the double-layer dust extraction cover to move, the exhaust fan is started at a first speed; when the mechanical arm drives the double-layer dust extraction cover to reach an initial welding point, the mechanical arm stops moving for 1-2 seconds, at this moment, the exhaust fan operates at a second higher speed, an air flow passes through suction holes in the inner side of the double-layer dust extraction cover and suction guide holes in the industrial brush, and air starts to be taken in;
when welding started, the welding gun head moves to perform welding; the double-layer dust extraction cover moves along with the welding gun head to collect smoke and dust and to shield sparks; after welding is ended, a clamp releases the welding gun head, which is then moves to the inner side of the double-layer dust extraction cover; then, the clamp clamps the welding gun head again; after that, the mechanical arm drives the industrial brush to move to the initial welding point again; the mechanical arm stops moving for 1-2 seconds, the industrial brush starts to rotate at a first brush speed, and the exhaust fan starts to work, and afterwards, polishing is carried out along a welding path; after polishing, the mechanical arm returns to an original position;
when the exhaust fan operates at a second speed, a negative-pressure region is formed near the suction holes of the double-layer dust extraction cover and the suction guide holes of the industrial brush, and smoke and dust generated in the welding process enter the smoke purification module through the air guide hose under an effect of a negative pressure; when polishing is needed, the mechanical arm drives the double-layer dust extraction cover to move, the drive motor drives the industrial brush to rotate at the first brush speed, a wire brushes of the industrial brush performs polishing to remove dust and rust, the exhaust fan rotates at the second speed to provide a suction force, and residues such as iron filings generated in the polishing process are extracted via the suction guide holes in the industrial brush.

2. The smoke and dust treatment apparatus for welding according to claim 1 , wherein the smoke and dust treatment apparatus for welding further comprises the welding mechanism, wherein the welding mechanism comprises the welding gun head and a wire feeding mechanism connected to the welding gun head, the welding gun head movably penetrates through the double-layer dust extraction cover through the rigid sleeve, the rigid sleeve is fixedly connected to the inner layer of the double-layer dust extraction cover, the clamp is disposed on the rigid sleeve and is used to fix the welding gun head on the rigid sleeve, and the wire feeding mechanism is fixed on the mechanical arm.

3. The smoke and dust treatment apparatus for welding according to claim 1 , wherein the industrial brush is provided with the plurality of suction guide holes.

4. The smoke and dust treatment apparatus for welding according to claim 1 , wherein the double-layer dust extraction cover is provided with the plurality of suction holes, and the suction holes are spaced on the inner layer of the double-layer dust extraction cover.

5. The smoke and dust treatment apparatus for welding according to claim 1 , wherein the smoke and dust treatment apparatus for welding also includes the mechanical arm, one end of the mechanical arm is detachably connected with the outer layer of the double-layer dust extraction cover, which is used to drive the double-layer dust extraction cover to

Assignees

• Univ Nantong

Inventors

• Hua Liang
• Zhao Jiahao
• Zhu Junguo
• Pei Binhui
• Yuan Chang
• Shang Liangliang
• Luo Laiwu
• Tang Yu
• Cheng Yuze
• Hu Delin
• Guo Benteng
• Gu Jin

Classifications

• B08B1/36

  rotating about an axis orthogonal to the surface · CPC title

• B01D46/0034 Primary

  using magnetic forces to remove particles · CPC title

• B24D13/10 Primary

  comprising assemblies of brushes · CPC title

• B08B15/04

  from a small area, e.g. a tool {(removing chips B23Q11/0042)} · CPC title

• B01D39/10

  Filter screens essentially made of metal · CPC title