Handheld high negative pressure dust removal equipment

Abstract

The utility model discloses handheld high-negative-pressure dust removal equipment, which relates to the technical field of welding fume treatment and particularly comprises a device body, an air inlet end of the device body is connected with a welding fume flowing pipe, and the other end of the welding fume flowing pipe is connected with a welding gun of manual welding equipment through a dust collection suite. The other end of the welding fume flowing pipe is fixed on the body of a worker through a fixing structure; the dust collection suite comprises a main body, the main body is of a hollow structure, and a through hole is formed in one end of the main body. The handheld high-negative-pressure dust removal equipment is located at the front end of a welding gun and can effectively absorb harmful smoke dust generated in the welding process; the arms and the back or the waist of a worker are fixed, so that the weight borne by the hands of the worker during welding is effectively reduced, the labor intensity of the worker is reduced, and the production efficiency is improved; the dust collection suite connected with the welding gun is various in specification, can be matched with welding guns of different specifications and models in the market, and is wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of welding smoke treatment, in particular to a handheld high-negative-pressure dust removal device. Background Art

[0002] During manual welding operations, especially when welding metal, a large amount of smoke is generated to pollute the environment. The smoke generated not only pollutes the environment, but also affects the health of employees working in such a dusty environment for a long time. To address this problem, welding smoke purification devices have been proposed in the prior art.

[0003] At present, the welding fume treatment device and welding equipment for purifying welding fume generated by manual welding in gas shielded welding on the market are usually two independent entities. When in use, the welding fume purification device is generally set around the welding station. The welding fume purification device uses the suction force generated by the fan when it is working to make the welding fume enter the filter cartridge inside the equipment from the suction hood to purify the welding fume. However, since the welding gun is in a moving state during the welding process, it is difficult to always keep the distance between the suction hood and the welding gun within the effective suction range of the suction hood. The welding fume treatment effect is unstable. Moreover, when the distance between the welding gun and the suction hood is greater than the effective suction range of the suction hood, the suction force of the suction hood on the welding fume is weakened, and some welding fume will escape, causing an impact on the workers. Although some solutions in the prior art provide a welding fume flow channel on the welding gun, because the worker holds the welding gun in his hand for operation, the welding gun is connected to a long distance line and is heavy. Adding a welding fume flow channel to the welding gun further increases the weight of the welding gun, causing the worker's hand to bear a greater weight when welding. After a long time, workers will be unable to continue working due to fatigue; based on this, the present application proposes a handheld high-negative pressure dust removal equipment. Utility Model Content

[0004] The utility model provides a handheld high-negative pressure dust removal device, which solves the problem proposed in the above background technology that when the welding smoke flow duct and the welding gun are in a state where they are independent of each other, the welding smoke collection effect is unstable, and when a welding smoke flow channel is provided on the welding gun, the weight of the welding gun is increased, which is not conducive to taking the welding gun.

[0005] The utility model provides the following technical solution: a handheld high-negative-pressure dust removal device, comprising a device body, an air inlet end of the device body being connected to a welding smoke flow pipe, the other end of the welding smoke flow pipe being connected to a welding gun of a manual welding device via a dust collection kit, and the other end of the welding smoke flow pipe being fixed to a worker via a fixing structure;

[0006] The dust collection kit includes a main body, which is a hollow structure. One end of the main body is provided with a through hole, and a clip is provided at the top of the through hole. The welding gun is connected to the dust collection kit via the clip. The dust collection kit head is fixed to the bottom of the through hole. The gun head of the welding gun extends to the outside of the main body through the dust collection kit head. The top of the other end of the main body is provided with a fixing hole. The inner cavity of the fixing hole is connected to an upper tube. The upper tube is fixedly connected to the other end of the welding smoke flow tube.

[0007] The fixing structure includes a convenience belt 1, a convenience belt 2 and a waist belt. The welding smoke flow tube is connected to the worker's arm through the convenience belt 1, and the welding smoke flow tube is connected to the back of the worker's work clothes through the convenience belt 2; the welding smoke flow tube is fixed to the worker's waist through the waist belt.

[0008] Preferably, the clip is made of insulating and heat-resistant material, and the clip is connected to the main body top screw through a bolt.

[0009] Preferably, the dust collection kit head is a conical structure, the outer diameter of one end of the dust collection kit head connected to the main body is larger than the outer diameter of the other end, the inner diameter of the dust collection kit head is larger than the outer diameter of the welding gun, and dust collection holes are evenly provided on the side wall of the end of the dust collection kit head away from the main body. When the dust collection kit is in use, the distance between the conical suction port of the dust collection kit head and the welding gun head is 25 to 30 mm.

[0010] Preferably, the welding smoke flow pipe is a reducer structure, and the welding smoke flow pipe includes a first pipe and a second pipe, the first pipe and the second pipe have a smooth transition, and the outer diameter of the first pipe is smaller than the outer diameter of the second pipe, the end of the first pipe away from the second pipe is connected to the dust collection kit, and the end of the second pipe away from the first pipe is connected to the air inlet end of the device body.

[0011] Preferably, the first pipe is connected to the staff's arm through a convenient belt; the outer surface of the first pipe is wrapped with a covering cloth.

[0012] Preferably, the convenience strip includes two self-adhesive strips, the middle parts of the two self-adhesive strips are connected, one self-adhesive strip is fixed on the arm of the staff, and the other self-adhesive strip is used to fix the welding smoke flow tube; a Velcro is fixed on the inner side of one end of the self-adhesive strip, and a Velcro mother strip adapted to the Velcro is fixed on the outer side of the other end of the self-adhesive strip.

[0013] Preferably, one end of the second convenience belt is fixed to the back of the staff member's work clothes, and two second convenience belts are symmetrically arranged on the back of the staff member's work clothes.

[0014] Preferably, the two ends of the waist belt are connected by Velcro, a storage bag and a fixing buckle are provided on the outside of the waist belt, and an elastic belt is provided on the waist belt.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This handheld high-negative-pressure dust removal equipment is simple to install, easy to move, has low operating costs, and high purification efficiency. It is easy to use and can effectively reduce the labor intensity of workers and improve production efficiency on the basis of absorbing welding fumes. It can meet the dust removal needs of most manual welding in gas shielded welding and is widely used.

[0017] 2. This handheld high-negative-pressure dust removal device is located at the front end of the welding gun and can effectively absorb harmful smoke and dust generated during welding. By fixing the device on the worker's arms, back or waist, it effectively reduces the weight on the worker's hands during welding, thereby reducing the worker's labor intensity and improving production efficiency. The dust collection kit connected to the welding gun has various specifications and can be matched with welding guns of different specifications and models on the market, with a wide range of applications.

[0018] 3. This handheld high-negative-pressure dust removal equipment changes the diameter of the welding smoke flow pipe in the dust removal system by changing the diameter. The welding smoke flow pipe connected to the dust collection kit at the front end has a small diameter and is light in weight, which reduces the weight borne by the worker's hands when welding. After a certain distance, the diameter of the welding smoke flow pipe is increased by changing the diameter, which reduces the wind pressure lost in the welding smoke flow pipe and increases the use range of the dust collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0020] Figure 2 For the utility model structure Figure 1 Schematic diagram on the back;

[0021] Figure 3 This is an enlarged schematic diagram of the connection between the dust collection kit of the utility model structure, the welding gun and the welding smoke flow pipe;

[0022] Figure 4 This is a schematic diagram of the structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the welding smoke flow tube structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the dust collection kit of the utility model;

[0025] Figure 7 This is a schematic diagram of the top of the dust collection kit of the utility model;

[0026] Figure 8 For the utility model structure Figure 7 Schematic cross-section;

[0027] Figure 9This is a schematic diagram of the structural belt of the utility model;

[0028] Figure 10 For the utility model structure Figure 9 Back intention;

[0029] Figure 11 A structural intention for the vest;

[0030] Figure 12 For the convenience of connecting the second belt with the vest.

[0031] In the figure: 1. Main body; 2. Upper tube; 3. Dust collection kit head; 4. Clip; 5. Device body; 6. Welding smoke flow tube; 7. Convenience belt 1; 8. Convenience belt 2; 9. Manual welding equipment; 10. Welding parts; 11. Worker; 12. First pipe; 13. Second pipe; 14. Self-adhesive strip; 15. Bolt hole; 16. Waist belt; 17. Storage bag; 18. Fixing buckle; 19. Elastic belt; 20. Vest. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See attached Figure 1 To the attached Figure 10 The present invention provides a handheld high-negative-pressure dust removal device, comprising a device body 5, the air inlet end of which is connected to a welding fume flow tube 6. The other end of the welding fume flow tube 6 is connected to the welding gun of a manual welding device via a dust collection kit, and the other end of the welding fume flow tube 6 is fixed to a worker 11 via a fixing structure. When the device is in use, the distance between the dust collection kit and the welding gun remains unchanged, effectively absorbing harmful fumes generated during manual welding, ensuring the device's dust collection effect. Furthermore, the provision of the fixing device effectively reduces the weight borne by the worker's hands during welding, thereby alleviating the worker's labor intensity and improving production efficiency.

[0034] The aforementioned device body 5 is conventional technology. When in operation, the device body 5 draws welding fumes generated during manual welding into the interior of the device body 5 and filters the fumes. In some embodiments of the present application, a high-pressure dust collector is provided within the inner cavity of the device body 5. The air inlet end of the high-pressure dust collector is connected to the welding fume flow pipe 6. When a worker performs welding operations, harmful fumes generated by the welding gun are drawn into the welding fume flow pipe 6 through the dust collection kit under the action of the high-pressure dust collector, and ultimately enter the interior of the high-pressure dust collector. After the welding fumes are filtered and purified within the high-pressure dust collector, the clean air is discharged through the high-pressure dust collector's air outlet.

[0035] The fixing structure includes a first convenience belt 7, a second convenience belt 8, and a waist belt 16. The first convenience belt 7 includes two self-adhesive strips 14, which are connected at the middle. One self-adhesive strip 14 is fixed to the arm of the worker 11, and the other self-adhesive strip 14 is used to fix the welding smoke flow tube 6. A Velcro strip is fixed on the inner side of one end of the self-adhesive strip 14, and a Velcro strip that is compatible with the Velcro strip is fixed on the outer side of the other end of the self-adhesive strip 14. Through the provision of the first convenience belt 7, the welding smoke flow tube 6 can be quickly fixed to the arm of the worker 11, reducing the weight on the worker's hand during welding, thereby reducing the worker's labor intensity and improving production efficiency.

[0036] One end of the convenience belt 28 is fixed to the back of the staff's work clothes, and two convenience belts 28 are symmetrically arranged on the back of the staff's work clothes. One end of the convenience belt 28 is provided with a Velcro, and the other end of the convenience belt 28 is provided with a Velcro. The welding smoke flow tube 6 can be quickly fixed to the back of the staff 11 through the convenience belt 28, further reducing the weight borne by the staff's hands when welding.

[0037] The two ends of the waist belt 16 are connected by Velcro, allowing it to be quickly fastened around the worker's waist or removed. A storage bag 17 and a fixing buckle 18 are provided on the outside of the waist belt 16. The worker can use the storage bag to store small items such as mobile phones for daily use. The worker can use the fixing buckle 18 to fix the welding smoke flow tube 6 around his waist. In addition, to accommodate welders with different waist circumferences, the waist belt 16 is provided with an elastic band 19. The elastic band 19 can be used to adjust the length of the waist belt 16, improving its adaptability.

[0038] From the above description of the fixing structure, it can be seen that when the device is in use, the staff can fix the welding smoke flow tube 6 on their body through the convenient belt 1 7 and the convenient belt 2 8, and the staff can also fix the welding smoke flow tube 6 on their body through the convenient belt 1 7 and the waist belt 16, which meets various needs and improves the adaptability of the device.

[0039] The above-mentioned welding smoke flow tube 6 is a reducer tube structure. The welding smoke flow tube 6 includes a first tube 12 and a second tube 13. The first tube 12 and the second tube 13 can be connected by a threaded connection, so that the first tube 12 and the second tube 13 can be quickly assembled and unassembled. It is simple and convenient to use. There is a smooth transition between the first tube 12 and the second tube 13 to ensure the sealing reliability of the threaded connection. The outer diameter of the first tube 12 is smaller than the outer diameter of the second tube 13. The end of the first tube 12 away from the second tube 13 is connected to the dust collection kit, and the end of the second tube 13 away from the first tube 12 is connected to the air inlet end of the device body 5, and the first tube 12 is connected to the staff arm through a convenient belt 7. The outer surface of the first tube 12 is wrapped with a wrapping cloth to increase the friction between the convenient belt 7 and the first tube 12, thereby improving the reliability of the fixation of the welding smoke flow tube 6 and improving the aesthetics of the welding smoke flow tube 6. The provision of welding fume flow tube 6 allows for a small diameter and lightweight first tube 12, reducing the weight on workers' hands during welding. The provision of second tube 13 reduces the wind pressure lost within the bellows, expanding the dust collector's usability. In some embodiments of the present application, welding fume flow tube 6 is made of a PVC bellows, which features high wear resistance, high temperature resistance, embedded steel wire reinforcement, and excellent flexibility. The dimensions of first tube 12 are 30 mm (Φ), and those of second tube 13 are 50 mm (Φ).

[0040] The dust collection kit has a variety of specifications and can match welding guns of different specifications and models on the market, thereby improving the adaptability of the device. The dust collection kit includes a main body 1, an upper tube 2, a dust collection kit head 3 and a clip 4. The main body 1 is a hollow cavity structure, which is used to connect the upper tube 2, the dust collection kit head 3 and the clip 4. The material of the main body 1 can be aluminum alloy. A fixing hole is provided at the top of one end of the main body 1, and an upper tube 2 is provided in the inner cavity of the fixing hole. The material of the upper tube 2 can be aluminum alloy. The upper tube 2 and the main body 1 can be connected by a threaded connection. The upper tube 2 is a bridge for the dust collection kit to connect to the welding smoke flow tube 6. In some embodiments of the present application, the upper tube 2 is connected to the welding smoke flow tube 6 by a clamp, and the welding smoke flow tube 6 can also be connected to the upper tube 2 by a threaded connection.

[0041] A through hole is provided at the other end of the main body 1, and the dust collection kit head 3 is connected to the bottom of the through hole. In some embodiments of the present application, the dust collection kit head 3 is threadedly connected to the main body 1. The dust collection kit head 3 is a suction device at the front end of the welding gun, and its material can be aluminum alloy. The dust collection kit head 3 is a conical structure. The outer diameter of one end of the dust collection kit head 3 connected to the main body 1 is larger than the outer diameter of the other end. The inner diameter of the dust collection kit head 3 is larger than the outer diameter of the welding gun. Dust collection holes are evenly provided on the side wall of the end of the dust collection kit head 3 away from the main body 1.

[0042] During gas shielded welding, a shielding gas is present. For example, in double shielded welding, carbon dioxide shielding gas is required. The welding fume purification process involves extracting the fumes generated at the welding torch tip. If the air velocity at the welding torch tip is too high, the shielding gas will be drawn away, affecting the weld quality. If the air velocity is too low, the collection efficiency will be low, affecting the weld fume absorption efficiency. Therefore, there is an optimal distance between the air intake and the welding torch tip that neither affects the weld quality nor the weld fume absorption efficiency. Testing was conducted on different welding torches and workpieces at different distances between the air intake and the welding torch tip. Ultrasonic testing was used to inspect the weld quality, and an anemometer was used to measure the air velocity at the front air intake. Ultimately, it was concluded that a distance of 25 to 30 mm between the air intake of the dust extraction kit and the welding torch tip prevented shielding gas from being drawn away, achieving optimal weld fume absorption.

[0043] A clip 4 is provided at the top of the through-hole, and a bolt hole is provided at the top of the through-hole. A bolt is connected to the bolt hole. The bolt is provided to fix the position of the clip 4 in the through-hole. The clip 4 is a bridge connecting the dust collection kit to the manual welding gun. When the welding gun is inserted into the through-hole, the staff inserts the clip 4 into the through-hole. The staff uses the bolt to connect the clip 4 to the main body 1 with the top screw, thereby achieving the fixation of the welding gun. Preferably, the bolt is an M3 bolt. The inner diameter of the clip 4 can be customized according to the diameter of the manual welding gun neck, which is suitable for most manual welding guns for gas shielded welding. The clip 4 is made of an insulating and heat-resistant material, which can be made of bakelite. When in use, the clip 4 does not conduct current and heat from the welding gun, thereby improving the safety of the device when in use.

[0044] From the above description, it can be seen that the handheld high-negative pressure dust removal equipment proposed in this application uses a dust collection kit to fix the welding smoke flow tube on the welding gun, which can effectively absorb the harmful smoke generated during the welding process, and fix the welding smoke flow tube to the worker 11 through a fixed structure, reducing the weight borne by the worker's hands when welding, thereby reducing the worker's labor intensity and improving production efficiency. The size of the dust collection kit can be customized so that it can match welding guns of different specifications and models on the market, thereby increasing its application range. The welding smoke flow tube 6 with a variable diameter structure reduces the wind pressure lost in the pipeline while reducing the weight borne by the worker's hands when welding. The dust collection kit is made of lightweight materials, is light in weight, and does not interfere with the worker's welding operation.

[0045] The above-mentioned staff work clothes can be a vest 20, and a structure of the vest 20 is as shown in the attached instructions. Figure 11 As shown, in order to adapt to welding workers with different weights and waistlines, an elastic device is added to the waist position of the custom vest. Workers can freely adjust the tightness of the vest according to their own situation. The connection diagram of the convenient belt 8 and the vest 20 is shown in the attached manual. Figure 12shown.

[0046] The electrical components involved in this application are all existing technologies. Those skilled in the art are familiar with their connection methods. Through these people, all the electrical components in this application are connected to their corresponding power supplies through wires, and according to actual conditions, appropriate controllers are selected to meet control requirements. The specific connections and control sequences are described below. The electrical connections between the electrical components are completed in a sequential working order. The detailed connection methods are well known in the art. The following mainly introduces the working principles and processes, and no further explanation of electrical control is given.

[0047] The present invention will be further described below through an embodiment of the present invention.

[0048] In this embodiment, when the handheld high-negative pressure dust removal equipment is used, the first pipe 12 is fixed to the back and arm of the worker. The specific operation is: the worker 11 uses the convenient belt 2 8 to fix the welding smoke flow tube 6 on his back, and uses the convenient belt 1 7 to fix the end of the welding smoke flow tube 6 connected to the dust suction kit on his arm. The worker 11 connects the welding gun of the manual welding equipment 9 to the dust suction kit. The specific connection operation is: the worker inserts the welding gun into the through hole, and inserts the bakelite clip 4 that is suitable for the diameter of the manual welding gun neck at the appropriate position of its gun neck. Use the bolt top screw that is suitable for the bolt hole 15 to pass through the three bolt holes 15 on the main body 1 of the dust suction kit. The bolt top screw supports the bakelite clip 4, so that the dust suction kit can be firmly fixed on the gun neck of the manual welding gun. When the staff uses manual welding equipment 9 to weld the workpiece 10, the smoke generated by welding enters the inner cavity of the welding smoke flow tube 6 along the conical dust suction kit head 3 and the main body 1, and the welding smoke enters the interior of the device body 5 along the welding smoke flow tube 6. The device body 5 filters the welding smoke and the treated gas is discharged into the air.

[0049] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology and will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A handheld high-negative-pressure dust removal device, comprising a device body (5), characterized in that: The air inlet end of the device body (5) is connected to a welding smoke flow pipe (6), the other end of the welding smoke flow pipe (6) is connected to a welding gun of a manual welding device through a dust collection kit, and the other end of the welding smoke flow pipe (6) is fixed to a worker through a fixing structure; The dust collection kit comprises a main body (1), the main body (1) is a hollow structure, one end of the main body (1) is provided with a through hole, the top of the through hole is provided with a clip (4), the welding gun is connected to the dust collection kit via the clip (4), the bottom of the through hole is fixed with a dust collection kit head (3), the gun head of the welding gun extends to the outside of the main body (1) through the dust collection kit head (3), the top of the other end of the main body (1) is provided with a fixing hole, the inner cavity of the fixing hole is connected to an upper tube (2), and the upper tube (2) is fixedly connected to the other end of the welding smoke flow tube (6); The fixing structure comprises a first convenience belt (7), a second convenience belt (8) and a waist belt (16); the welding smoke flow tube (6) is connected to the arm of the worker through the first convenience belt (7); the welding smoke flow tube (6) is connected to the back of the worker's work clothes through the second convenience belt (8); and the welding smoke flow tube (6) is fixed to the waist of the worker through the waist belt (16).

2. The handheld high-negative-pressure dust removal device according to claim 1, characterized in that: The clip (4) is made of an insulating and heat-resistant material, and the clip (4) is connected to the main body (1) through a screw thread.

3. The handheld high-negative-pressure dust removal device according to claim 1, characterized in that: The dust collection kit head (3) is a conical structure, the outer diameter of one end of the dust collection kit head (3) connected to the main body (1) is larger than the outer diameter of the other end thereof, the inner diameter of the dust collection kit head (3) is larger than the outer diameter of the welding gun, and dust collection holes are evenly provided on the side wall of the end of the dust collection kit head (3) away from the main body (1), and when the dust collection kit is in use, the distance between the conical suction port of the dust collection kit head (3) and the welding gun head is 25 to 30 mm.

4. The handheld high-negative-pressure dust removal device according to claim 1, characterized in that: The welding smoke flow pipe (6) is a reducer pipe structure, comprising a first pipe (12) and a second pipe (13), wherein the first pipe (12) and the second pipe (13) have a smooth transition, and the outer diameter of the first pipe (12) is smaller than the outer diameter of the second pipe (13), and the end of the first pipe (12) away from the second pipe (13) is connected to the dust collection kit, and the end of the second pipe (13) away from the first pipe (12) is connected to the air inlet end of the device body (5).

5. The handheld high-negative-pressure dust removal device according to claim 4, characterized in that: The first pipe (12) is connected to the staff's arm through a convenient belt (7); the outer surface of the first pipe (12) is wrapped with a covering cloth.

6. The handheld high-negative-pressure dust removal device according to claim 1, characterized in that: The convenient belt (7) comprises two self-adhesive strips (14), the middle parts of the two self-adhesive strips (14) are connected, one self-adhesive strip (14) is fixed on the arm of the staff, and the other self-adhesive strip (14) is used to fix the welding smoke flow tube (6); a Velcro is fixed on the inner side of one end of the self-adhesive strip (14), and a Velcro mother strip adapted to the Velcro is fixed on the outer side of the other end of the self-adhesive strip (14).

7. The handheld high-negative-pressure dust removal device according to claim 1, characterized in that: One end of the second convenient belt (8) is fixed to the back of the staff member's work clothes, and two second convenient belts (8) are symmetrically arranged on the back of the staff member's work clothes.

8. The handheld high-negative-pressure dust removal device according to claim 1, characterized in that: The two ends of the waist belt (16) are connected by Velcro, a storage bag (17) and a fixing buckle (18) are provided on the outside of the waist belt (16), and an elastic belt (19) is provided on the waist belt (16).

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