Movable welding fume dust remover with full-automatic tracking air suction arm

Abstract

The utility model belongs to the technical field of environment-friendly air purification, and discloses a movable welding fume dust remover with a full-automatic tracking air suction arm. Comprising an air suction arm for tracking welding smoke dust and a dust remover for purifying the smoke dust, one end of the air suction arm is connected with the dust remover; the dust remover comprises a filter chamber, a fan chamber, an electric control chamber and a back flushing chamber; the tail end of the filter chamber is communicated with the back flushing chamber, and the fan chamber is arranged below the back flushing chamber; the electric control chamber is arranged above the reverse blowing chamber; the air suction arm comprises an air suction port, an air suction pipeline B, an air suction pipeline A, an air inlet pipeline and a rotating motor which are sequentially connected, and an arm motor B is arranged at the joint of the air suction pipeline B and the air suction pipeline A; an arm motor A is arranged at the joint of the air suction pipeline A and the air inlet pipeline. The trapping efficiency of a local exhaust system is improved, the operation energy consumption of the system is reduced, and meanwhile the working efficiency of welders is improved.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection air purification technology, and relates to a mobile welding fume dust collector with a fully automatic tracking suction arm. Background Technology

[0002] Processes such as welding, cutting, and die casting generate high-temperature jets with initial temperatures higher than the surrounding environment. These high-temperature jets typically carry a large number of particulate pollutants, which are dispersed into the surrounding environment at a certain initial velocity, causing smoke and dust pollution. These particles can cause serious harm to health if inhaled, so it is crucial to quickly and effectively remove regional pollutants.

[0003] Currently, the common approach is to use local fume extractors combined with individual units or centralized treatment via system piping before discharging. However, for welding work with dispersed weld points, there is a significant conflict between effectively protecting welders from welding fume hazards and production efficiency. Due to management, work tasks, or operator reasons, the extraction arm cannot be moved by the operator in a timely manner to remove welding fumes from the welding point during the welding process. Using traditional mobile welding fume extractors, workers must constantly reposition the extraction arm above the fume source to ensure that the welding fumes are captured. Workers either frequently stop to make adjustments or completely ignore the use of the extraction arm. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings in the above-mentioned background technology and provide a mobile welding fume extractor with a fully automatic tracking suction arm. This mobile welding fume extractor can automatically track the welding process and remain positioned above the welding point to absorb welding fumes, thereby improving the collection efficiency of the local exhaust system, reducing system operating energy consumption, and improving the work efficiency of welders.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a mobile welding fume dust collector with a fully automatic tracking suction arm, including a suction arm for tracking welding fumes and a dust collector for fume purification; one end of the suction arm is connected to the dust collector; the dust collector includes a filter chamber, a fan chamber, an electrical control chamber, and a back-blowing chamber; the end of the filter chamber is connected to the back-blowing chamber, the fan chamber is located below the back-blowing chamber; the electrical control chamber is located above the back-blowing chamber; the suction arm includes a suction port, suction pipe B, suction pipe A, and an inlet pipe connected in sequence, a rotary motor, the rotary motor is located on the top surface of the filter chamber of the dust collector, the rotating end of the rotary motor is connected to the inlet pipe, and an arm motor is installed at the connection between suction pipe B and suction pipe A. Machine B; An arm motor A is installed at the connection between the air intake pipe and the air inlet pipe; the arm motor A is connected to the air inlet pipe and the air intake pipe A respectively through a motor mounting plate A and a motor drive plate A. The motor drive plate A can rotate with the arm motor A to realize the extension and retraction of the air intake pipe A; the arm motor B is connected to the air intake pipe A and the air intake pipe B respectively through a motor mounting plate B and a motor drive plate B. The motor drive plate B can rotate with the arm motor B to realize the extension and retraction of the air intake pipe B; at the same time, the motor mounting plate B is connected to the air inlet through a connecting rod and an auxiliary arm. When the arm motor B rotates, the auxiliary arm moves with the connecting rod to extend and retract, so that the working range of the air inlet can be adjusted by changing the length of the arm.

[0006] The intake port is equipped with a distance sensor, a photoelectric sensor, an anti-collision sensor, and a concentration sensor. The intake port has a horseshoe-shaped cross-section with an outer flange 50mm to 80mm wide on the side facing the flue gas. The distance sensor is located at the lower arc of the horseshoe-shaped outer flange. There are four photoelectric sensors, located at the diagonal corners of the upper arc of the horseshoe-shaped outer flange. The anti-collision sensor is located around the edge of the outer flange. The concentration sensor is located 20 to 50mm away from the center of the inner diameter of the intake port.

[0007] The top of the filter chamber is connected to the end of the suction arm. The filter chamber is equipped with an air distribution plate, a filter cartridge, and a dust collection drawer. The air distribution plate is located above the filter cartridge, the dust collection drawer is located below the filter cartridge, the filter cartridge is arranged horizontally, and the air distribution plate is located at the top of the filter chamber.

[0008] A fan is installed in the fan room. The fan includes a fan motor, which is located in the fan room. The output end of the fan motor is connected to an impeller, which is located above the fan motor. An air outlet plate for air outlet is also provided on one side of the fan room.

[0009] The upper part of the fan room is connected to the backflushing chamber.

[0010] The electrical control room is equipped with a control panel located on the ceiling. An industrial computer is installed inside the electrical control room and connected to the control panel.

[0011] The backflushing chamber is arranged in the following order from top to bottom: a blowpipe, an air manifold, and a support frame. A pulse valve is installed at the front end of the blowpipe, with the front end of the pulse valve facing the end of the filter cartridge. A filter pressure reducing valve for pressure reduction is also installed on the outer wall of the backflushing chamber.

[0012] Furthermore, the dust collector also includes a housing; the filter chamber, fan chamber, electrical control chamber, and back-flushing chamber are all located inside the housing.

[0013] Furthermore, the filter chamber is also equipped with a filter chamber door panel, and a door lock is installed between the filter chamber door panel and the shell for opening and closing; the fan chamber is also equipped with a fan chamber door panel, and a door lock is installed between the fan chamber door panel and the shell for opening and closing.

[0014] Furthermore, a handle is provided on the outside of the upper side of the housing.

[0015] Furthermore, the air distribution plate is installed adjacent to the top inlet of the filter chamber.

[0016] Furthermore, the cross-section of the air distribution plate is arc-shaped or U-shaped, which serves to evenly distribute the airflow delivered by the suction arm and to block sparks and large dust particles.

[0017] Furthermore, the filter cartridge is made of polyester fiber PTFE membrane flame-retardant filter paper, and differential pressure sensors are arranged inside and outside the filter cartridge to monitor the filter cartridge differential pressure and the constant air volume control of the dust collector.

[0018] Furthermore, the slope of the baffles on both sides of the dust receiving drawer is 55°, which is greater than the dust repose angle;

[0019] Furthermore, the fan motor is a three-phase permanent magnet synchronous external rotor type motor, which is directly controlled by the PLC control system and continuously variable speed according to changes in working conditions to meet the air volume required to ensure collection efficiency.

[0020] Furthermore, the jet pipe may be a Venturi tube, a Laval tube, or other induction nozzle;

[0021] Furthermore, the industrial control computer includes a PLC control system. The fan motor, filter pressure reducing valve, control panel, pulse valve, air manifold, blowpipe, distance sensor, photoelectric sensor, anti-collision sensor, concentration sensor, rotary motor, arm motor A, arm motor B, and differential pressure sensor are all connected to the PLC control system, and none of them are limited to a specific model, as long as they achieve their working functions. The fan motor speed is adjusted according to the changes in flue gas concentration and filter cartridge differential pressure.

[0022] Furthermore, the photoelectric sensor is an infrared photoelectric sensor or an ultraviolet photoelectric sensor. It locates the welding point position by detecting the intensity of the welding arc light, and then the PLC control system controls the arm motor and the rotary motor to realize fully automatic tracking of the air intake as the position of the welding light source changes.

[0023] Furthermore, the ranging sensor is an ultrasonic ranging sensor, a laser ranging sensor, or a radar sensor. It measures the distance to the target weldment by measuring the intensity or time of the reflected signal from the target weldment, and transmits the data to the PLC control system of the industrial control computer. The control system sends instructions to control and adjust arm motor A and arm motor B so that the distance between the air intake and the target weldment is maintained at a set value.

[0024] Furthermore, the anti-collision sensor consists of several infrared sensors that detect the presence of nearby objects, perform anti-collision sensing, and transmit the signal to the PLC control system to provide a safer suction arm stroke.

[0025] Furthermore, the concentration sensor can detect the concentration of welding fumes entering the intake port, and thus change the air volume of the dust collector under different working conditions such as standby, welding gap, and welding according to the set concentration and air volume control curve, so as to realize energy saving and consumption reduction of the dust collector.

[0026] Furthermore, the control panel is connected to an embedded industrial computer. The Siemens HMI control panel (KTP1200) can read out the operating air volume, fan speed, flue gas concentration, filter cartridge pressure difference, running time, and backflushing times. It can also write the distance to the welding point, backflushing pressure difference, pulse time, filter cartridge pressure difference and air volume curve, concentration range and air volume control curve, and has functions such as start / stop, manual / automatic switching, and suction arm reset.

[0027] The advantages of this utility model compared with the prior art are:

[0028] (1) This utility model provides a mobile welding fume dust collector with a fully automatic tracking suction arm, which can perform arc detection and accurate welding distance identification. It controls the suction arm to be positioned at a set distance of 45° above the welding point and moves with the changes of the welding point, which greatly improves the collection efficiency of welding fumes and improves the production efficiency of welders.

[0029] (2) The mobile welding fume dust collector with fully automatic tracking suction arm provided by this utility model can automatically adjust the air volume according to the welding fume concentration and the pressure difference of the filter cartridge. It can control the fan speed under different working conditions such as standby, welding gap and welding to achieve energy saving and consumption reduction. It also avoids the situation where the equipment air volume is too large due to the small pressure difference of the new filter cartridge, which will draw in too much welding shielding gas and affect the welding effect, and the situation where the equipment air volume gradually decreases as the pressure difference of the filter cartridge increases, which cannot meet the collection efficiency. During the operation of the equipment, the air volume is automatically adjusted with the pressure difference, always meeting the required collection efficiency and reducing the operating energy consumption of the equipment. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0031] Figure 1 This is a schematic diagram of a mobile welding fume extractor with a fully automatic tracking suction arm according to this utility model.

[0032] Figure 2 This is a cross-sectional schematic diagram of the mobile welding fume dust collector of this utility model.

[0033] Figure 3 This is a cross-sectional view AA of the mobile welding fume dust collector of this utility model.

[0034] Figure 4 This is a cross-sectional view of the mobile welding fume extractor of this utility model.

[0035] Figure 5 This is a schematic diagram of the air intake of this utility model.

[0036] In the diagram: 1. Dust collector; 2. Suction arm; 11. Filter chamber; 12. Fan chamber; 13. Electrical control room; 14. Backflush chamber; 100. Housing; 101. Filter cartridge; 102. Knob; 103. Impeller; 104. Fan motor; 105. Casters; 106. Dust collection drawer; 107. Air distribution plate; 108. Air outlet; 109. Filter pressure reducing valve; 110. Fan chamber door; 111. Filter chamber door; 112. Door lock; 113. Control panel; 114. Handle; 115. Industrial computer; 116. 117. Pulse valve, 118. Air bag, 119. Air bag support, 201. Puffing pipe, 202. Rotary motor, 203. Air inlet pipe, 204. Arm motor A, 205. Inhalation pipe A, 206. Arm motor B, 207. Inhalation pipe B, 208. Inhalation port, 209. Motor mounting plate A, 210. Motor mounting plate B, 211. Motor drive plate B, 212. Distance sensor, 213. Photoelectric sensor, 214. Anti-collision sensor, 215. Concentration sensor. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.

[0038] Example 1

[0039] A mobile welding fume extractor with a fully automatic tracking suction arm, such as Figure 1-4As shown, the device includes a suction arm 2 for tracking welding fumes and a dust collector 1 for purifying the fumes. One end of the suction arm 2 is connected to the dust collector 1. The dust collector 1 includes a filter chamber 11, a fan chamber 12, an electrical control chamber 13, and a back-blowing chamber 14. The end of the filter chamber 11 is connected to the back-blowing chamber 14, and the fan chamber 12 is located below the back-blowing chamber 14. The electrical control chamber 13 is located above the back-blowing chamber 14. The suction arm 2 includes a suction port 207, a suction pipe B206, a suction pipe A204, an inlet pipe 202, and a rotary motor 201 connected in sequence. The rotary motor 201 is located on the top surface of the filter chamber 11 of the dust collector 1. The rotating end of the rotary motor 201 is connected to the inlet pipe 202. An arm motor B205 is installed at the connection between the suction pipe B206 and the suction pipe A204. An arm motor A203 is installed at the connection between 204 and the air intake pipe 202.

[0040] A distance sensor 212, a photoelectric sensor 213, an anti-collision sensor 214, and a concentration sensor 215 are installed at the air intake 207.

[0041] The top of the filter chamber 11 is connected to the end of the suction arm 2. The filter chamber 11 is provided with an air distribution plate 107, a filter cartridge 101, and a dust collection drawer 106. The air distribution plate 107 is located above the filter cartridge 101, the dust collection drawer 106 is located below the filter cartridge 101, the filter cartridge 101 is arranged horizontally, and the air distribution plate 107 is located at the top inside the filter chamber 11.

[0042] A fan is installed inside the fan chamber 12. The fan includes a fan motor 104. The fan motor 104 is installed inside the fan chamber 12. The output end of the fan motor 104 is connected to the impeller 103. The impeller 103 is located above the fan motor 104. An air outlet 108 for air outlet is also provided on one side of the fan chamber 12.

[0043] The upper part of the fan room 12 is connected to the backflush chamber 14.

[0044] The electrical control room 13 is equipped with a control panel 113, which is located on the top surface. An industrial computer 115 is installed inside the electrical control room 13 and is connected to the control panel 113.

[0045] Inside the backflush chamber 14, a blowpipe 119, an air manifold 117, and a support 118 are arranged sequentially from top to bottom. A pulse valve 116 is installed at the front end of the blowpipe 119, with the front end of the pulse valve 116 facing the end of the filter cartridge 101. A filter pressure reducing valve 109 for pressure reduction is also installed on the outer wall of the backflush chamber 14.

[0046] The dust collector 1 also includes a housing 100; the filter chamber 11, the fan chamber 12, the electrical control chamber 13, and the back-blowing chamber 14 are all located inside the housing 100.

[0047] The filter chamber 11 is also equipped with a filter chamber door panel 111, and a door lock 112 is provided between the filter chamber door panel 111 and the housing 100 for opening and closing; the fan chamber 12 is also equipped with a fan chamber door panel 110, and a door lock 112 is provided between the fan chamber door panel 110 and the housing 100 for opening and closing.

[0048] A handle 114 is provided on the outside of the upper side of the housing 100.

[0049] The air distribution plate 107 is located adjacent to the top inlet of the filter chamber 11.

[0050] The cross-section of the air distribution plate 107 is arc-shaped or U-shaped, which serves to evenly distribute the airflow delivered by the suction arm 2 and to block sparks and large dust particles.

[0051] The filter cartridge 101 is made of polyester fiber PTFE membrane flame-retardant filter paper. Differential pressure sensors are arranged inside and outside the filter cartridge 101 to monitor the differential pressure of the filter cartridge 101 and the constant air volume control of the dust collector 1.

[0052] The dust collection drawer 106 has a 55° slope on both sides of its baffles, which is greater than the dust angle of repose.

[0053] The fan motor 104 is a three-phase permanent magnet synchronous external rotor type motor, which is directly controlled by the PLC control system and performs stepless speed change according to the changes in working conditions to meet the air volume required to ensure the collection efficiency.

[0054] The blowpipe 119 may be a Venturi tube, a Laval tube, or other induction nozzle;

[0055] The industrial control computer 115 includes a PLC control system. The fan motor 104, filter pressure reducing valve 109, control panel 113, pulse valve 116, air manifold 117, blowpipe 119, distance sensor 212, photoelectric sensor 213, anti-collision sensor 214, concentration sensor 215, rotary motor 207, arm motor A 203, arm motor B 205, and differential pressure sensor are all connected to the PLC control system. None of them are limited to a specific model; their functionality is sufficient. The speed of the fan motor 104 is adjusted according to changes in flue gas concentration and differential pressure in the filter cartridge 101.

[0056] When the dust collector 1 is working normally, the photoelectric sensor 213 and the distance sensor 212 on the suction port 207 of the fully automatic tracking suction arm 2 can perform arc detection and precise distance control with the welding point, and continuously position and track above the welding point to absorb welding fumes; the airflow containing welding fumes enters through the suction arm 2, and after the airflow collides with the air distribution plate 107, the flow speed is reduced and it enters the filter chamber 11. Larger particles are deposited and fall into the dust collection drawer 106, and the remaining dust-laden airflow is intercepted and filtered by the filter cartridge 101. Fine particles are trapped on the surface of the filter cartridge 101, and the purified air enters the filter cartridge 101 and passes through the back-blowing chamber 14 and the fan chamber 12 and is discharged into the air through the air outlet 108.

[0057] As the equipment is used, the pressure difference of filter cartridge 101 gradually increases. When the pressure difference reaches the set value, pulse backflushing is required. At this time, pulse valve 116 opens, and compressed air in air tank 117 is ejected through the pulse valve and the small hole on the blow pipe 119 to form a high-speed, high-pressure induced airflow. At the same time, an induced airflow enters the filter cartridge 101 together, and a momentary positive pressure appears in the filter cartridge 101, causing expansion and micro-movement, which causes the dust deposited on the outer surface of the filter cartridge 101 to fall off and into the dust collection drawer 106, thus realizing the clean regeneration of the filter cartridge.

[0058] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A mobile welding fume extractor with a fully automatic tracking suction arm, characterized in that, Includes a suction arm (2) for tracking welding fumes and a dust collector (1) for purifying the fumes; one end of the suction arm (2) is connected to the dust collector (1); the dust collector (1) includes a filter chamber (11), a fan chamber (12), an electrical control chamber (13), and a back-blowing chamber (14); the end of the filter chamber (11) is connected to the back-blowing chamber (14), the fan chamber (12) is located below the back-blowing chamber (14); the electrical control chamber (13) is located above the back-blowing chamber (14); the suction arm (2) includes a suction port (207), a suction pipe B (206), and a suction pipe A connected in sequence. (204), air inlet pipe (202), rotary motor (201), the rotary motor (201) is installed on the top surface of the filter chamber (11) of the dust collector (1), the rotating end of the rotary motor (201) is connected to the air inlet pipe (202), the arm motor B (205) is installed at the connection between the suction pipe B (206) and the suction pipe A (204); the arm motor A (203) is installed at the connection between the suction pipe A (204) and the air inlet pipe (202). Arm motor A (203) is connected to the air intake pipe (202) and the air intake pipe A (204) respectively through motor mounting plate A (208) and motor drive plate A (209). Motor drive plate A (209) rotates with arm motor A (203) to realize the extension and retraction of air intake pipe A (204); arm motor B (205) is connected to air intake pipe A (202) respectively through motor mounting plate B (210) and motor drive plate B (211). (204) is connected to the inhalation pipe B (206), and the motor drive plate B (211) rotates with the arm motor B (205) to realize the extension and retraction of the inhalation pipe B (206); the motor fixing plate B (210) is connected to the inhalation port (207) through the connecting rod and the auxiliary arm. When the arm motor B (205) rotates, the auxiliary arm carries the connecting rod to make extension and retraction movements, so that the working range of the inhalation port (207) can be adjusted by changing the length of the arm; A distance sensor (212), a photoelectric sensor (213), an anti-collision sensor (214), and a concentration sensor (215) are installed at the air intake (207); The cross-section of the air intake (207) is horseshoe-shaped, with an outer edge flange 50mm~80mm wide on the side facing the flue gas. The distance sensor (212) is arranged at the lower arc of the horseshoe-shaped outer edge flange. There are four photoelectric sensors (213) located at the diagonal of the upper arc of the horseshoe-shaped outer edge flange. The anti-collision sensor (214) is located around the edge of the outer edge flange. The concentration sensor (215) is located 20~50mm away from the center of the inner diameter of the air intake (207) pipe.

2. A mobile welding fume extractor with a fully automatic tracking suction arm as described in claim 1, characterized in that, The top of the filter chamber (11) is connected to the end of the suction arm (2). The filter chamber (11) is equipped with an air distribution plate (107), a filter cartridge (101), and a dust collection drawer (106). The air distribution plate (107) is located above the filter cartridge (101), and the dust collection drawer (106) is located below the filter cartridge (101). The filter cartridge (101) is arranged horizontally, and the air distribution plate (107) is located at the top of the filter chamber (11).

3. A mobile welding fume extractor with a fully automatic tracking suction arm as described in claim 1, characterized in that, A fan is installed in the fan room (12). The fan includes a fan motor (104). The fan motor (104) is installed in the fan room (12). The output end of the fan motor (104) is connected to the impeller (103). The impeller (103) is located above the fan motor (104). An air outlet plate (108) for air outlet is also provided on one side of the fan room (12).

4. A mobile welding fume extractor with a fully automatic tracking suction arm as described in claim 1, characterized in that, The electrical control room (13) is equipped with a control panel (113), which is located on the top surface. An industrial computer (115) is installed inside the electrical control room (13), and the industrial computer (115) is connected to the control panel (113).

5. A mobile welding fume extractor with a fully automatic tracking suction arm as described in claim 1, characterized in that, The backflush chamber (14) is arranged in sequence from top to bottom as follows: a blow pipe (119), an air bag (117), and a support (118); a pulse valve (116) is installed at the front end of the blow pipe (119), and the front end of the pulse valve (116) is positioned directly opposite the end of the filter cartridge (101).

6. A mobile welding fume extractor with a fully automatic tracking suction arm as described in claim 1, characterized in that, The dust collector (1) also includes a housing (100); the filter chamber (11), the fan chamber (12), the electrical control chamber (13), and the back-blowing chamber (14) are all located inside the housing (100).

7. A mobile welding fume extractor with a fully automatic tracking suction arm as described in claim 2, characterized in that, The cross-section of the wind distribution plate (107) is arc-shaped or U-shaped.

8. A mobile welding fume extractor with a fully automatic tracking suction arm as described in claim 2, characterized in that, The upper part of the fan room (12) is connected to the backflush chamber (14).

9. A mobile welding fume extractor with a fully automatic tracking suction arm as described in claim 7, characterized in that, A handle (114) is provided on the outside of the upper side of the housing (100).

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