Electric welding smoke collecting device for building construction

Abstract

The utility model provides an electric welding smoke collection device for building construction, which comprises a platform plate, a smoke extraction assembly is arranged on the platform plate, a dust removal box body is fixedly arranged at the top of the platform plate, and the smoke extraction assembly is connected with the dust removal box body; a horizontal driving mechanism is arranged on the platform plate, is in transmission connection with the smoke extraction assembly, and is used for driving the smoke extraction assembly to move left and right; a stirring shaft extending in the left-right direction is rotationally arranged in the dust removal box body, a transmission driving mechanism is in transmission connection with the horizontal driving mechanism, and a left-right through through hole is formed in the right side of the dust removal box body; in the using process, the sliding block can be driven by the first driving device to move, so that the smoke collecting position of the hose head is indirectly changed, meanwhile, the hose head can adjust the smoke collecting angle according to the wind direction, the collected smoke can be conveyed into the dust removal box body for purification treatment, and after treatment, the smoke purification efficiency and effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke collection, in particular to an electric welding smoke collection device for building construction. Background Art

[0002] A lot of welding is used in construction, and smoke is generated during the welding process. The smoke will pollute the environment. Workers who are exposed to the smoke for a long time will suffer from respiratory health damage, posing a threat to people's health and safety. Especially during the welding process at the construction site, the welding position may be constantly moved, so the smoke removal device cannot cope with the smoke generated in this process.

[0003] Application No.: CN213492810U discloses a welding fume collection device, which is used to collect and process workshop fumes by setting a collection main pipe, a collection branch pipe, a dust hood, a smoke sensor and an induced draft fan, fixing the dust hood on the welding station, and using the smoke sensor, which not only protects the working environment, but also reduces air pollution and prevents more people from being harmed.

[0004] Although the above patent document can collect smoke during use, the smoke may drift with different wind directions. The above device is not convenient for changing the angle of smoke collection, which reduces the practicality of the device. Utility Model Content

[0005] The utility model aims to provide a welding smoke collection device for construction, aiming to solve the problem in the prior art that smoke may drift with different wind directions, and the above device is not convenient for changing the angle of smoke collection, which reduces the practicability of the device.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: the electric welding fume collection device for construction includes a platform plate, a fume extraction component is provided on the platform plate, a dust removal box is fixedly provided on the top of the platform plate, and the fume extraction component and the dust removal box are connected to each other;

[0007] The platform plate is provided with a horizontal driving mechanism, which is in transmission connection with the smoke extraction component and is used to drive the smoke extraction component to move left and right;

[0008] The dust removal box is internally provided with a stirring shaft extending in the left-right direction, the horizontal driving mechanism is connected to a transmission driving mechanism, the right side of the dust removal box is provided with a through hole that is transparent to the left and right, the transmission driving mechanism is connected to the stirring shaft through the through hole, and the transmission driving mechanism is used to drive the stirring shaft to rotate when the horizontal driving mechanism rotates.

[0009] Preferably, the horizontal driving mechanism comprises a first driving device and a first lead screw, and the first lead screw is extended in the left-right direction;

[0010] A support seat is fixedly provided on the top of the platform plate, and one end of the first lead screw away from the first driving device is rotatably connected to the support seat;

[0011] The first driving device is fixedly arranged on the top of the platform plate, and the output shaft of the first driving device is fixedly connected to an end of the first lead screw away from the support seat through a coupling.

[0012] Preferably, the smoking assembly comprises a smoking device, a first hose, a second hard tube and a hose head;

[0013] The rear side of the dust removal box is connected to the first hose, the first hose is connected to the output end of the smoker, the input end of the smoker is connected to the second hard tube, and the end of the second hard tube away from the smoker is connected to the hose head.

[0014] Preferably, a sliding block is fixedly sleeved on the second rigid tube, a round hole which is transparent to the left and right is opened on the sliding block, and the first lead screw is inserted into the round hole and is threadedly connected to the round hole.

[0015] Preferably, the platform plate is provided with limit grooves which are open upward and spaced apart from each other, and the limit grooves are convex-shaped groove structures;

[0016] A limit block is fixedly arranged at the bottom of the smoking device. The limit block is a convex structure. The limit block is slidably arranged in the limit groove. When the sliding block moves, it can drive the limit block to move left and right along the limit groove.

[0017] Preferably, the transmission drive mechanism comprises a first transmission wheel, a second transmission wheel and a rotating shaft, and the rotating shaft is extended in the left-right direction;

[0018] The first transmission wheel is fixedly sleeved on the first lead screw, the rotating shaft passes through the through hole and is fixedly connected to one end of the stirring shaft, and the second transmission wheel is fixedly sleeved on a side of the rotating shaft away from the stirring shaft;

[0019] The first transmission wheel is located at the rear side of the second transmission wheel. The first transmission wheel and the second transmission wheel are connected through a belt drive, and are used to drive the rotating shaft to rotate when the first lead screw rotates.

[0020] Preferably, a conveying assembly is provided in the dust removal box, and the conveying assembly includes a conveying pipe and a diversion pipe. There are multiple diversion pipes, which are arranged at intervals on the left and right. The bottom of the conveying pipe is fixedly connected to the multiple diversion pipes, and the diversion pipes are used to divert the smoke.

[0021] The dust removal box is provided with a cavity, a coil spring is fixedly provided in the cavity, a winding wheel is fixedly provided on the outer side of the coil spring, and a side of the first hose away from the smoking device is wound on the winding wheel;

[0022] The dust removal box body is provided with a round hole which is transparent from front to back, and the other end of the first hose is fixedly passed through the round hole and is fixedly connected with the delivery pipe.

[0023] Preferably, a ventilating port which is transparent from front to back is provided on the front side of the dust removal box, and a placement groove with an upward opening is provided on the top of the dust removal box, and the placement groove and the ventilating port are communicated with each other;

[0024] A filter box is inserted into the placement slot, and a handle is fixed on the top of the filter box;

[0025] A storage groove with an opening facing right is provided on the right side of the filter box, and an activated carbon filter screen is arranged in the storage groove.

[0026] Preferably, a water inlet pipe is provided on the top of the dust removal box, and a water outlet pipe is fixedly provided on the front side of the dust removal box.

[0027] Preferably, a plurality of support rods arranged in a rectangular array and spaced apart from each other and arranged vertically are fixedly provided at the bottom of the platform plate, and universal wheels are fixedly provided at the bottom of each of the support rods.

[0028] The beneficial effects are: 1. During use, the sliding block can be driven to move by the first driving device, so as to indirectly change the position of the hose head for collecting smoke. At the same time, the hose head can adjust the smoke collection angle according to the wind direction. The collected smoke can be transported to the dust removal box for purification. After treatment, the efficiency and effect of smoke purification can be improved.

[0029] 2. During the smoke delivery process, the rotation of the first screw can indirectly drive the stirring shaft to rotate. The stirring shaft can be used to break up the smoke bubbles discharged into the water inside the dust removal box through the delivery pipe, and also stir the water inside the dust removal box, which can increase the contact area between the smoke and water, and also increase the movement of dust particles in the bubbles, speed up the contact speed between dust particles and water, and further accelerate the mixing of smoke and water. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of a three-dimensional structure in a front view in a specific embodiment of the utility model;

[0031] Figure 2 It is a schematic diagram of the enlarged structure of A in a specific embodiment of the utility model;

[0032] Figure 3 It is a schematic diagram of the rear-view stereo structure in a specific embodiment of the utility model;

[0033] Figure 4 This is a schematic diagram of a partial cross-section of the housing in a specific embodiment of the utility model.

[0034] Figure 5 It is a schematic diagram of the enlarged structure of point B in a specific embodiment of the utility model;

[0035] Figure 6 It is a structural schematic diagram of a partial cross-section of a dust removal box in a specific embodiment of the utility model.

[0036] In the figure: 1. platform plate; 2. smoking assembly; 201. smoking device; 31. first hose; 203. second hard tube; 204. hose head; 3. horizontal drive mechanism; 301. first drive device; 302. first screw; 4. transmission drive mechanism; 401. first transmission wheel; 402. second transmission wheel; 403. rotating shaft; 6. sliding block; 71. dust removal box; 72. conveying pipe; 73. stirring shaft; 74. ventilation port; 751. handle; 752. filter box; 753. activated carbon filter; 9. limiting groove; 10. support rod; 11. universal wheel; 12. coil spring; 13. winding wheel. DETAILED DESCRIPTION

[0037] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0038] like Figure 1-Figure 6 As shown, a welding smoke collection device for construction use can drive the sliding block 6 to move through the first driving device 301 during use, so as to indirectly change the position of the hose head 204 for collecting smoke. At the same time, the hose head 204 can adjust the smoke collection angle according to the wind direction, and the collected smoke can be transported to the dust removal box 71 for purification. After the treatment, the efficiency and effect of the smoke purification can be improved. Specifically, it includes a platform plate 1, a smoke extraction component 2 is provided on the platform plate 1, and a dust removal box 71 is fixedly provided on the top of the platform plate 1. The smoke extraction component 2 and the dust removal box 71 are interconnected, and the smoke is extracted into the dust removal box 71 through the smoke extraction component 2, and then the smoke is purified in the dust removal box 71.

[0039] A plurality of support rods 10 are fixedly provided at the bottom of the platform plate 1, which are arranged in a rectangular array and vertically at intervals. Universal wheels 11 are fixedly provided at the bottom of the support rods 10. Through the arrangement of the universal wheels 11, the platform plate 1 can be pushed to the required area for use by only pushing it, and there is no need for manual moving by construction workers, which greatly reduces the labor intensity of construction workers.

[0040] The setting of the smoke extraction component 2 enables the smoke to be drawn into the dust removal box 71 and purified. Specifically, the smoke extraction component 2 includes a smoke extractor 201 (the smoke extractor 201 can extract the smoke), a first hose 31, a second hard tube 203 and a hose head 204 (the hose head 204 is a universal hose that can change its state under external force).

[0041] The rear side of the dust removal box 71 is interconnected with the first hose 31, the first hose 31 is interconnected with the output end of the smoker 201, the input end of the smoker 201 is interconnected with the second hard tube 203, and the end of the second hard tube 203 away from the smoker 201 is interconnected with the hose head 204. When the smoker 201 is driven and started, the smoke can be sucked into the second hard tube 203 through the hose head 204, and then sucked into the dust removal box 71 through the smoker 201 and the first hose 31.

[0042] When the horizontal driving mechanism 3 is started, it can drive the hose head 204 to move back and forth, so that the position of the hose head 204 can be adjusted as needed to improve the smoke collection effect. Specifically, a horizontal driving mechanism 3 is provided on the platform plate 1, and the horizontal driving mechanism 3 is transmission-connected to the smoke extraction component 2. The horizontal driving mechanism 3 is used to drive the smoke extraction component 2 to move left and right. When the horizontal driving mechanism 3 is started, it can drive the smoke extraction component 2 to move back and forth.

[0043] The horizontal driving mechanism 3 includes a first driving device 301 (the first driving device 301 is a first driving self-locking motor) and a first lead screw 302 . The first lead screw 302 is extended in the left-right direction.

[0044] A support seat is fixedly provided on the top of the platform plate 1, and one end of the first lead screw 302 away from the first drive device 301 is rotatably connected to the support seat. The support seat is used to support the first lead screw 302. Since one end of the first lead screw 302 is connected to the output shaft of the first drive device 301 and the other end is rotatably connected to the support seat, the stability of the first lead screw 302 can be improved.

[0045] The first drive device 301 is fixed on the top of the platform plate 1, and the output shaft of the first drive device 301 is fixedly connected to the end of the first screw 302 away from the support seat through a coupling, driving the first drive device 301 to start, so that the output shaft of the first drive device 301 can drive the first screw 302 to rotate.

[0046] A sliding block 6 is fixedly sleeved on the second hard tube 203, and a round hole is opened on the sliding block 6. The first screw 302 is inserted into the round hole and is threadedly connected to the round hole. When the first screw 302 rotates, it can drive the sliding block 6 to reciprocate along the extension direction of the first screw 302.

[0047] By setting the limit groove 9 and the limit block, the sliding block 6 can be rotated, and then the sliding block 6 can move back and forth but cannot rotate. Specifically, the platform plate 1 is provided with a limit groove 9 with an opening facing upward and spaced left and right, and the limit groove 9 is a convex groove structure.

[0048] A limit block is fixedly provided at the bottom of the smoking device 201. The limit block is a convex structure. Since the limit groove 9 and the limit block are both convex structures, the limit block can play a role of limiting sliding, avoiding the limit block from tilting or shifting. The limit block is slidably arranged in the limit groove 9, and when the sliding block 6 moves, it can drive the limit block to move left and right along the limit groove 9.

[0049] During the smoke delivery process, the first lead screw 302 can indirectly drive the stirring shaft 73 to rotate when it rotates. The stirring shaft 73 can be used to break up the smoke bubbles discharged into the water inside the dust removal box 71 through the delivery pipe 72, and at the same time, the water inside the dust removal box 71 is also stirred, thereby accelerating the contact speed between dust particles and water, and further accelerating the mixing of smoke and water. Specifically, the internal rotation of the dust removal box 71 is provided with a stirring shaft 73 extending in the left and right directions, and the horizontal driving mechanism 3 is connected to the transmission driving mechanism 4. The right side of the dust removal box 71 is provided with a through hole that is transparent to the left and right. The transmission driving mechanism 4 is connected to the stirring shaft 73 through the through hole. The transmission driving mechanism 4 is used to drive the stirring shaft 73 to rotate when the horizontal driving mechanism 3 rotates. When the first lead screw 302 rotates, it can drive the transmission driving mechanism 4 to rotate, so that the water in the dust removal box 71 is stirred so that the smoke can be better mixed.

[0050] The transmission driving mechanism 4 includes a first transmission wheel 401, a second transmission wheel 402 and a rotating shaft 403. The rotating shaft 403 is extended in the left-right direction.

[0051] The first transmission wheel 401 is fixedly sleeved on the first screw 302, the rotating shaft 403 passes through the through hole and is fixedly connected to one end of the stirring shaft 73, and the second transmission wheel 402 is fixedly sleeved on the side of the rotating shaft 403 away from the stirring shaft 73. When the first screw 302 rotates, it will drive the first transmission wheel 401 to rotate.

[0052] The first transmission wheel 401 is located at the rear side of the second transmission wheel 402. The first transmission wheel 401 and the second transmission wheel 402 are connected by belt transmission. When the first lead screw 302 rotates, it is used to drive the rotating shaft 403 to rotate. Since the first transmission wheel 401 and the second transmission wheel 402 are connected by belt transmission, the second transmission wheel 402 can be driven to rotate. When the second transmission wheel 402 rotates, the rotating shaft 403 can be driven to rotate. When the rotating shaft 403 rotates, it will drive the stirring shaft 73 to rotate, so that the water in the dust removal box 71 is stirred and mixed.

[0053] By setting up the conveying component, the smoke can be evenly discharged into the dust removal box 71 to improve the purification effect. Specifically, a conveying component is provided in the dust removal box 71, and the conveying component includes a conveying pipe 72 and a diversion pipe. There are multiple diversion pipes, which are arranged at intervals on the left and right. The bottom of the conveying pipe 72 is fixedly connected to multiple diversion pipes, and the diversion pipes are used to divert the smoke.

[0054] A round hole that is transparent from front to back is opened on the dust removal box 71. The other end of the first hose 31 is fixedly passed through the round hole and fixedly connected to the delivery pipe 72. After the first hose 31 discharges the smoke into the delivery pipe 72, the delivery pipe 72 discharges the smoke from multiple diversion pipes into the dust removal box 71 so as to achieve the purpose of uniform smoke discharge.

[0055] By setting the coil spring 12 and the winding wheel 13, when the sliding block 6 moves back and forth, the excess first hose 31 can be wound around the winding wheel 13 under the action of the coil spring 12, so as to avoid the excess first hose 31 from being entangled and affecting the operation of the device. Specifically, a cavity is provided in the dust removal box 71, and a coil spring 12 is fixed in the cavity. A winding wheel 13 is fixed on the outer side of the coil spring 12. The side of the first hose 31 away from the smoking device 201 is wound around the winding wheel 13, and the coil spring 12 can drive the winding wheel 13 to rotate. When the sliding block 6 moves to one side, the coil spring 12 is compressed, so that the first hose 31 is stretched to its longest length. When the sliding block 6 moves to the middle of the first screw 302, the coil spring 12 returns to its original state due to the absence of external force, so that the first hose 31 is wound around the winding wheel 13.

[0056] A ventilation hole 74 which is transparent from front to back is provided on the front side of the dust removal box 71, and a placement groove which opens upward is provided on the top of the dust removal box 71. The placement groove and the ventilation hole 74 are connected to each other. A small amount of dust particles will still remain in the remaining gas, and these particles will be filtered once more through the activated carbon filter 753 and then discharged from the dust removal box 71.

[0057] A filter box 752 is inserted into the placement slot, and a handle 751 is fixed on the top of the filter box 752 .

[0058] A storage groove with an opening facing right is provided on the right side of the filter box 752, and an activated carbon filter 753 is provided in the storage groove. When air containing a small amount of smoke particles passes through the filter box 752, the air is filtered again by the activated carbon filter 753 and then discharged. When replacement is required, the handle 751 can be pulled upwards to take out the filter box 752, and the activated carbon filter 753 can be pulled out for replacement, and then the filter box 752 can be slid into the placement groove at the upper end of the dust removal box 71 to complete the replacement.

[0059] A water inlet pipe is provided on the top of the dust removal box 71, and a water outlet pipe is fixedly provided on the front side of the dust removal box 71. After a period of use, the water valve of the water outlet pipe of the dust removal box 71 can be opened to discharge the sewage, and then new purified water can be added through the water inlet pipe.

[0060] Working principle: Before use, the platform plate 1 can be pushed to the required area for use by the universal wheel 11, and the construction workers do not need to move it manually, which greatly reduces the labor intensity of the construction workers.

[0061] When in use, the first driving device 301 is driven to start, so that the output shaft of the first driving device 301 can drive the first screw 302 to rotate. When the first screw 302 rotates, it can drive the sliding block 6 to move back and forth along the extension direction of the first screw 302. Since the limit groove 9 and the limit block are both convex structures, the limit block can be limited to slide, avoiding the limit block from tilting or shifting, and can adjust the position of the hose head 204. Then, the direction of the hose head 204 can be manually adjusted to better collect smoke.

[0062] When the smoker 201 is driven and started, the smoke can be sucked into the second hard tube 203 through the hose head 204, and then into the delivery pipe 72 through the smoker 201 and the first hose 31. After the first hose 31 discharges the smoke into the delivery pipe 72, the delivery pipe 72 discharges the smoke from multiple diversion pipes into the dust removal box 71, so as to achieve the purpose of uniform smoke discharge. When the first lead screw 302 rotates, it will drive the first transmission wheel 401 to rotate. Since the first transmission wheel 401 and the second transmission wheel 402 are connected by belt drive, the second transmission wheel 402 can be driven to rotate. When the second transmission wheel 402 rotates, it can drive the rotating shaft 403 to rotate. When the rotating shaft 403 rotates, it will drive the stirring shaft 73 to rotate, so that the water in the dust removal box 71 is stirred and mixed.

[0063] When the sliding block 6 moves, the coil spring 12 can drive the winding wheel 13 to rotate. When the sliding block 6 moves to one side, the coil spring 12 is compressed, so that the first hose 31 is stretched to its longest length. When the sliding block 6 moves to the middle of the first lead screw 302, the coil spring 12 returns to its original state due to the absence of external force, so that the first hose 31 is wound around the winding wheel 13, thereby avoiding the situation where the redundant first hose 31 is wound and affects the operation of the device.

[0064] After using it for a period of time, the water valve of the water outlet pipe of the dust removal box 71 can be opened to discharge the sewage, and then new purified water can be added through the water inlet pipe. When the air containing a small amount of smoke particles passes through the filter box 752, the air is filtered again using the activated carbon filter 753 and then discharged. When replacement is needed, the handle 751 can be pulled upwards to take out the filter box 752, and the activated carbon filter 753 can be pulled out for replacement, and then the filter box 752 can be slid into the placement slot at the upper end of the dust removal box 71 to complete the replacement.

[0065] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A welding fume collection device for construction, characterized in that: It comprises a platform plate (1), a smoke extraction assembly (2) is provided on the platform plate (1), a dust removal box (71) is fixedly provided on the top of the platform plate (1), and the smoke extraction assembly (2) and the dust removal box (71) are connected to each other; The platform plate (1) is provided with a horizontal driving mechanism (3), the horizontal driving mechanism (3) is in driving connection with the smoke extraction component (2), and the horizontal driving mechanism (3) is used to drive the smoke extraction component (2) to move left and right; The dust removal box (71) is internally provided with a stirring shaft (73) extending in the left-right direction, and the horizontal driving mechanism (3) is connected to a transmission driving mechanism (4). The right side of the dust removal box (71) is provided with a through hole that is transparent to the left and right, and the transmission driving mechanism (4) is connected to the stirring shaft (73) through the through hole. The transmission driving mechanism (4) is used to drive the stirring shaft (73) to rotate when the horizontal driving mechanism (3) rotates.

2. The welding fume collecting device for construction according to claim 1 is characterized in that: The horizontal driving mechanism (3) comprises a first driving device (301) and a first lead screw (302), wherein the first lead screw (302) is extended in the left-right direction; A support seat is fixedly provided on the top of the platform plate (1), and one end of the first lead screw (302) away from the first drive device (301) is rotatably connected to the support seat; The first driving device (301) is fixedly arranged on the top of the platform plate (1), and the output shaft of the first driving device (301) is fixedly connected to an end of the first lead screw (302) away from the support seat via a coupling.

3. The welding fume collecting device for construction according to claim 2 is characterized in that: The smoking assembly (2) comprises a smoking device (201), a first hose (31), a second hard tube (203) and a hose head (204); The rear side of the dust removal box (71) is interconnected with the first hose (31), the first hose (31) is interconnected with the output end of the smoking device (201), the input end of the smoking device (201) is interconnected with the second hard tube (203), and the end of the second hard tube (203) away from the smoking device (201) is interconnected with the hose head (204).

4. The welding fume collecting device for construction according to claim 3 is characterized in that: A sliding block (6) is fixedly sleeved on the second hard tube (203), and a round hole is opened on the sliding block (6) which is transparent to the left and right. The first lead screw (302) is inserted into the round hole and is threadedly connected to the round hole.

5. The welding fume collecting device for construction according to claim 4 is characterized in that: The platform plate (1) is provided with limit grooves (9) which are open upward and spaced apart from each other, and the limit grooves (9) are convex groove structures; A limit block is fixedly provided at the bottom of the smoking device (201), the limit block being a convex-shaped structure, and the limit block is slidably arranged in the limit slot (9), and when the sliding block (6) moves, it can drive the limit block to move left and right along the limit slot (9).

6. The welding fume collecting device for construction according to claim 2 is characterized in that: The transmission drive mechanism (4) comprises a first transmission wheel (401), a second transmission wheel (402) and a rotating shaft (403), wherein the rotating shaft (403) is extended in the left-right direction; The first transmission wheel (401) is fixedly sleeved on the first lead screw (302), the rotating shaft (403) passes through the through hole and is fixedly connected to one end of the stirring shaft (73), and the second transmission wheel (402) is fixedly sleeved on a side of the rotating shaft (403) away from the stirring shaft (73); The first transmission wheel (401) is located at the rear side of the second transmission wheel (402); the first transmission wheel (401) and the second transmission wheel (402) are connected via a belt drive, and are used to drive the rotating shaft (403) to rotate when the first lead screw (302) rotates.

7. The welding fume collecting device for construction according to claim 3 is characterized in that: A conveying assembly is provided in the dust removal box (71), the conveying assembly comprising a conveying pipe (72) and a diversion pipe, the diversion pipes being multiple and arranged at intervals on the left and right, the bottom of the conveying pipe (72) being fixedly connected to the multiple diversion pipes, the diversion pipes being used to divert smoke; A cavity is provided in the dust removal box (71), a coil spring (12) is fixedly provided in the cavity, a winding wheel (13) is fixedly provided on the outside of the coil spring (12), and a side of the first hose (31) away from the smoking device (201) is wound around the winding wheel (13); The dust removal box (71) is provided with a round hole which is transparent from front to back, and the other end of the first hose (31) is fixedly passed through the round hole and is fixedly connected to the delivery pipe (72).

8. The welding fume collecting device for construction according to claim 1 is characterized in that: The front side of the dust removal box (71) is provided with a ventilation hole (74) which is transparent from front to back, and the top of the dust removal box (71) is provided with a placement groove which opens upward, and the placement groove is communicated with the ventilation hole (74); A filter box (752) is inserted into the placement groove, and a handle (751) is fixedly provided on the top of the filter box (752); The right side of the filter box (752) is provided with a storage groove with an opening facing rightwards, and an activated carbon filter screen (753) is arranged in the storage groove.

9. The welding fume collecting device for construction according to claim 1 is characterized in that: A water inlet pipe is provided on the top of the dust removal box (71), and a water outlet pipe is fixedly provided on the front side of the dust removal box (71).

10. The welding fume collecting device for construction according to claim 1, characterized in that: A plurality of support rods (10) arranged in a rectangular array and arranged vertically are fixedly disposed at the bottom of the platform plate (1), and universal wheels (11) are fixedly disposed at the bottom of each of the support rods (10).

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