Workshop welding flue gas treatment device

Abstract

The invention relates to the technical field of flue gas treatment, in particular to a workshop welding flue gas treatment device which comprises a welding workbench, a flue gas treatment table is fixed to one side of the middle of the welding workbench, and a first bin and a second bin which are communicated through a round hole are arranged in the flue gas treatment table side by side; a plurality of second partition plates are evenly installed on the inner side of the shell, penetrating through holes are formed in the circle centers of the second partition plates, and calcium hydroxide powder is filled between every two adjacent second partition plates. After flue gas is sucked into the bin, the shell capable of rotating is arranged in the bin, the interior of the shell is divided into a plurality of mutually independent spaces through the partition plates, the spaces are filled with calcium hydroxide powder, the rolling shell can drive the calcium hydroxide powder to turn over, and the calcium hydroxide powder can make full contact with hydrogen fluoride gas in the flue gas; the hydrogen fluoride gas is removed, and meanwhile, the hardening problem of the calcium hydroxide powder can be inhibited.

Description

Technical Field

[0001] The present invention relates to the technical field of fume treatment, and in particular to a fume treatment device for welding in a workshop. Background Art

[0002] The welding process produces a variety of gases, the specific composition of which depends on the welding method, material, shielding gas, electrode / flux type, and environmental conditions. These gases can be harmful to the welder's health, requiring ventilation or protective measures. Some welding processes also produce hydrogen fluoride gas, a highly toxic and corrosive gas. When released into the atmosphere, it pollutes the environment and can also be harmful to the human body.

[0003] There is a publication number CN108273362A, which is named a welding fume purification instrument, including a fume collection mechanism, a first connecting rod, a second connecting rod, a lifting mechanism, a purification mechanism, a dust removal mechanism, an air outlet, a base and a movable wheel. The present invention fixes the fume collection mechanism to the side of the welding platform, so that the two collection mechanisms can be fixed by connecting the connecting parts, and then fixed by the cooperation of the splint and the support plate and the tightening of the screw, so that the fume collection mechanism is fixed to the side of the welding platform, which is convenient for fume collection. If manual welding is performed, the collection mechanism can be separated to collect the fume; the fume is passed into the interior of the water storage chamber to achieve desulfurization treatment of the fume, and at the same time, the bag filter layer, the ceramic filter layer and the activated carbon filter plate are used to enhance the purification of the fume, and the dust is patted by the dust scraping mechanism so that the dust is collected in the interior of the collection drawer.

[0004] The above-mentioned existing technology mainly collects the fume generated during welding and treats the fume through a purification and dust removal process. However, during the welding process using special welding sheets, hydrogen fluoride gas is generated, and the adsorption method cannot completely purify it, resulting in the gas being discharged into the atmosphere without being treated, causing atmospheric pollution. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a workshop welding fume treatment device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: Design a workshop welding fume treatment device, including a welding workbench, and a fume treatment table fixed on one side of the middle of the welding workbench: The interior of the flue gas treatment table is provided with a first chamber and a second chamber connected by a circular hole, and the backs of the first chamber and the second chamber are provided with a first chamber door and a second chamber door, respectively. A fan is provided on the side wall of the flue gas treatment table outside the first chamber, and the flue gas is transported into the second chamber by the fan. An air inlet is provided at the lower end of one side of the flue gas treatment table, and the air inlet is connected to the interior of the second chamber through a flue gas channel. A shell is rotatably arranged in the first chamber, and a plurality of second partitions are evenly installed on the inner side of the shell to evenly divide the interior of the shell. A through hole is opened at the center of each second partition, and calcium hydroxide powder is filled between two adjacent second partitions.

[0007] Preferably, the outer shell is formed by splicing two semicircular shells, and the outer shell is arranged in a columnar shape.

[0008] Preferably, a pipe is connected to one side of the shell, an arc-shaped support plate is provided on the inner wall of the first chamber, the pipe is located on the inner side of the arc-shaped support plate, and the end of the pipe fits into the end of the circular hole, the other end of the shell is connected to a rotating shaft, and a driving member is connected through the rotating shaft, and a plurality of air holes are evenly opened on the end of the shell at one end of the rotating shaft.

[0009] Preferably, the driving member includes a motor, a main gear and a transmission gear, the main gear is fixed to the end of the output shaft of the motor, the transmission gear is fixedly installed at the end of the rotating shaft, and the main gear and the transmission gear are meshed with each other.

[0010] Preferably, a first partition is provided at one end of the inner side of the shell, and the first partition is located at one end close to the pipe. A number of through-type ventilation holes are opened at the center position of the first partition, and the first partition maintains a certain distance from the adjacent second partition and the end position of the shell.

[0011] Preferably, a plurality of silica gel particles are placed between adjacent second separators, and the silica gel particles are arranged in a spherical shape.

[0012] Preferably, a support plate is fixed to the bottom of the first chamber, a shift fork is installed on the top of the support plate, and the end of the rotating shaft is located inside the shift fork. The upper end of the shift fork is open, and the end faces of the shift fork and the shell are in contact with each other.

[0013] Preferably, an adjustment component is provided between the top of the smoke channel and the second chamber, and the adjustment component includes a hose, a hard support bar, a lightweight rod, an electric telescopic rod, a support mesh plate and a pipe body; One end of the tube body extends to the inner upper end of the smoke channel, a hose is fixed to the end position of the tube body inside the second chamber, hard support bars are distributed in a circular array on the inside of the hose, a support mesh is provided on the inner side of the tube body, an electric telescopic rod is fixed to the support mesh, and a lightweight rod is hinged between the end position of the electric telescopic rod and the distal end of the hard support bar.

[0014] Preferably, when the hose is expanded from the inside, the outer shape is a bell-mouth shape, and at this time the diameter of the hose is larger than the inner diameter of the tube body.

[0015] Preferably, a gas exhaust pipe is further provided in the first chamber.

[0016] The present invention proposes a workshop welding fume treatment device, which has the following beneficial effects: after the fume is sucked into a chamber, a rotatable shell is arranged in the chamber, and the interior of the shell is divided into several independent spaces by partitions, and these spaces are filled with calcium hydroxide powder. The rolling shell drives the calcium hydroxide powder to turn, which can fully contact the hydrogen fluoride gas in the fume, thereby removing the hydrogen fluoride gas, and at the same time can prevent the calcium hydroxide powder from becoming caking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a workshop welding fume treatment device proposed by the present invention.

[0018] Figure 2 This is a structural schematic diagram from another angle of a workshop welding fume treatment device proposed by the present invention.

[0019] Figure 3 This is a structural schematic diagram of the back side of a workshop welding fume treatment device proposed by the present invention.

[0020] Figure 4 This is a structural schematic diagram of the adjustment component of a workshop welding fume treatment device proposed by the present invention.

[0021] Figure 5 This is a structural schematic diagram of the driving components of a workshop welding fume treatment device proposed by the present invention.

[0022] Figure 6 This is a schematic diagram of the structure inside the shell of a workshop welding fume treatment device proposed by the present invention.

[0023] Figure 7 for Figure 1 An enlarged structural diagram of part A of a proposed workshop welding fume treatment device.

[0024] In the figure: flue gas treatment table 1, fan 2, air hole 3, fork 4, rotating shaft 5, support plate 6, main gear 7, motor 8, first chamber 9, second chamber 10, flue gas channel 11, air inlet 12, welding workbench 13, adjustment component 14, hose 14-1, hard support bar 14-2, lightweight rod 14-3, electric telescopic rod 14-4, support mesh plate 14-5, tube body 14-6, pipeline 15, arc-shaped support plate 16, ventilation hole 17, first partition 18, silica gel particles 19, second partition 20, through hole 21, shell 22, transmission gear 23, circular hole 24, first compartment door 25, second compartment door 26, calcium hydroxide powder 27. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Example 1, with reference to Figure 1-3 A workshop welding fume treatment device includes a welding workbench 13, a fume treatment table 1 is fixed on one side of the middle of the welding workbench 13, and a shell 22 is spliced ​​by two semicircular shells, and the shell 22 is arranged in a columnar shape.

[0027] The interior of the flue gas treatment table 1 is provided with a first chamber 9 and a second chamber 10 connected by a circular hole 24. The backs of the first chamber 9 and the second chamber 10 are respectively provided with a first chamber door 25 and a second chamber door 26. A gas exhaust pipe is also provided in the first chamber 9. A fan 2 is provided on the side wall of the flue gas treatment table 1 outside the first chamber 9. The flue gas is transported to the second chamber 10 through the fan 2. An air inlet 12 is provided at the lower end of one side of the flue gas treatment table 1, and the air inlet 12 is connected to the interior of the second chamber 10 through the flue gas channel 11.

[0028] Reference Figure 5-7 A shell 22 is rotatably provided in the first chamber 9, and a plurality of second partitions 20 are evenly installed on the inner side of the shell 22. The interior of the shell 22 is evenly divided by the second partitions 20. A through hole 21 is opened at the center of the second partition 20, and calcium hydroxide powder 27 is filled between two adjacent second partitions 20.

[0029] A pipe 15 is connected to one side of the shell 22, and an arc-shaped support plate 16 is provided on the inner wall of the first chamber 9. The pipe 15 is located on the inner side of the arc-shaped support plate 16, and the end of the pipe 15 fits together with the end of the circular hole 24. The other end of the shell 22 is connected to the rotating shaft 5, and the driving member is connected through the rotating shaft 5. A plurality of air holes 3 are evenly opened at the end of the shell 22 at one end of the rotating shaft 5. The driving member includes a motor 8, a main gear 7 and a transmission gear 23. The main gear 7 is fixed to the end of the output shaft of the motor 8, and the transmission gear 23 is fixedly installed at the end of the rotating shaft 5. The main gear 7 and the transmission gear 23 are meshed with each other. A support plate 6 is fixed to the bottom of the first chamber 9, and a shift fork 4 is installed on the top of the support plate 6. The end position of the rotating shaft 5 is located on the inner side of the shift fork 4, and the upper end of the shift fork 4 is open, and the shift fork 4 fits together with the end face position of the shell 22.

[0030] When welding is performed in the workshop, after the fan 2 is turned on, the smoke generated during welding enters the smoke channel 11 from the air inlet 12, passes through the first chamber 9 and the second chamber 10 in sequence, and enters the interior of the shell 22 through the circular hole 24 and the pipe 15. After the power of the motor 8 is started, the kinetic energy is transmitted to the transmission gear 23 through the main gear 7, driving the rotating shaft 5 to rotate, and in the process of rotation, driving the shell 22 to rotate. The shell 22 is composed of two shells of the same size spliced ​​into a cylindrical shape, and a plurality of second partitions 20 are provided inside the shell 22 to divide the interior of the shell 22. Calcium hydroxide powder is filled between two adjacent second partitions 20. At the same time, after the flue gas enters the interior of the shell 22 from the pipe 15, it will pass through the through holes 21 in sequence and then pass through the area between each second partition 20. During the rotation of the shell 22, the calcium hydroxide powder between the two adjacent second partitions 20 will be flipped. During the flipping process, the powder will fully come into contact with the hydrogen fluoride gas in the flue gas, fully treat the hydrogen fluoride gas in the flue gas, and generate water and calcium fluoride. The reaction time for removing hydrogen fluoride by dry adsorption using calcium hydroxide powder is usually from a few seconds to a few minutes.

[0031] Example 2, reference Figure 6 The difference between this embodiment and embodiment 1 is that a first partition 18 is provided at one end of the inner side of the outer shell 22, and the first partition 18 is located at one end close to the pipe 15. A plurality of through-type ventilation holes 17 are opened at the center position of the first partition 18, and a certain distance is maintained between the first partition 18 and the adjacent second partition 20 and the end position of the outer shell 22.

[0032] A plurality of silica gel particles 19 are placed between adjacent second separators 20 , and the silica gel particles 19 are arranged in a spherical shape.

[0033] When calcium hydroxide powder is used to treat hydrogen fluoride gas in flue gas, a portion of water will be produced in the product, and the production of water will cause the calcium hydroxide powder to become hardened. When the calcium hydroxide powder becomes hardened, the effect of hydrogen fluoride treatment will be reduced.

[0034] To this end, spherical silica gel particles 19 are filled in the area between two adjacent second partitions 20. The silica gel particles 19 have a certain hardness and good water absorption. During the rotation of the outer shell 22, the silica gel particles 19 are flipped together with the powder to absorb the water in the powder. At the same time, with the help of the collision generated by the silica gel particles 19 during flipping, the compacted calcium hydroxide powder is collided and broken, thereby solving the problem of powder compaction during the treatment of hydrogen fluoride gas.

[0035] Secondly, a first partition 18 is provided at the end position of the outer shell 22, and a through-type ventilation hole 17 is provided on one side of the first partition 18. The plane where the ventilation hole 17 is located is perpendicular to the direction in which the smoke enters. During the flipping of the outer shell 22, the powder can be effectively prevented from entering the ventilation hole 17, ensuring that the ventilation hole 17 is not blocked and the gas passes smoothly.

[0036] Example 3, reference Figure 4 The difference between this embodiment and the first and second embodiments is that an adjustment assembly 14 is provided between the top of the smoke duct 11 and the second chamber 10. The adjustment assembly 14 includes a hose 14-1, a hard support bar 14-2, a lightweight rod 14-3, an electric telescopic rod 14-4, a support mesh 14-5 and a tube body 14-6. One end of the tube body 14-6 extends to the inner upper end of the smoke duct 11. The hose 14-6 is fixed at the end of the tube body 14-6 inside the second chamber 10. -1, the inner side of the hose 14-1 is distributed with hard support bars 14-2 in a circular array, and a support mesh 14-5 is provided on the inner side of the tube body 14-6. An electric telescopic rod 14-4 is fixed on the support mesh 14-5, and a lightweight rod 14-3 is hinged between the end position of the electric telescopic rod 14-4 and the distal end of the hard support bar 14-2. When the hose 14-1 is stretched from the inside, the external shape is trumpet-shaped, and at this time the diameter of the hose 14-1 is larger than the inner diameter of the tube body 14-6.

[0037] In order to ensure that the air inlet 12 can fully absorb the flue gas into the first chamber 9, the power of the fan 2 needs to be maintained. However, if the flue gas flow rate entering the first chamber 9 is too fast, the hydrogen fluoride gas will not be completely purified.

[0038] To this end, a second chamber 10 is arranged side by side next to the first chamber 9. When the flue gas enters the second chamber 10, an adjustment assembly 14 consisting of a hose 14-1, a hard support bar 14-2, a lightweight rod 14-3, an electric telescopic rod 14-4, a support mesh plate 14-5 and a tube body 14-6 is arranged between the second chamber 10 and the flue gas channel 11. When the flue gas flow rate is too fast, the power supply of the electric telescopic rod 14-4 is started to extend the length of the electric telescopic rod 14-4. At this time, the angle between the axial centerline direction of the lightweight rod 14-3 and the electric telescopic rod 14-4 increases. During the increase, the lightweight rod 14-3 stretches the end position of the hose 14-1, so that the end position of the hose 14-1 is trumpet-shaped. When the diameter of the hose 14-1 suddenly increases, the flow rate of the flue gas can be effectively reduced, so that the flue gas can pass through the shell 22 smoothly, and the hydrogen fluoride gas in the flue gas is fully purified and treated.

[0039] The working principle of the device is: When welding is performed in the workshop, after the fan 2 is turned on, the smoke generated during welding enters the smoke channel 11 from the air inlet 12, passes through the first chamber 9 and the second chamber 10 in sequence, and enters the interior of the shell 22 through the circular hole 24 and the pipe 15. After the power of the motor 8 is started, the kinetic energy is transmitted to the transmission gear 23 through the main gear 7, driving the rotating shaft 5 to rotate, and in the process of rotation, driving the shell 22 to rotate. The shell 22 is composed of two shells of the same size spliced ​​into a cylindrical shape, and a plurality of second partitions 20 are provided inside the shell 22 to divide the interior of the shell 22. Calcium hydroxide powder is filled between two adjacent second partitions 20. At the same time, after the flue gas enters the interior of the shell 22 from the pipe 15, it will pass through the through holes 21 in sequence and then pass through the area between each second partition 20. During the rotation of the shell 22, the calcium hydroxide powder between the two adjacent second partitions 20 will be flipped. During the flipping process, the powder will fully come into contact with the hydrogen fluoride gas in the flue gas, fully treat the hydrogen fluoride gas in the flue gas, and generate water and calcium fluoride. The reaction time for removing hydrogen fluoride by dry adsorption using calcium hydroxide powder is usually from a few seconds to a few minutes.

[0040] When calcium hydroxide powder is used to treat hydrogen fluoride gas in flue gas, a portion of water will be produced in the product, and the production of water will cause the calcium hydroxide powder to become hardened. When the calcium hydroxide powder becomes hardened, the effect of hydrogen fluoride treatment will be reduced.

[0041] To this end, spherical silica gel particles 19 are filled in the area between two adjacent second partitions 20. The silica gel particles 19 have a certain hardness and good water absorption. During the rotation of the outer shell 22, the silica gel particles 19 are flipped together with the powder to absorb the water in the powder. At the same time, with the help of the collision generated by the silica gel particles 19 during flipping, the compacted calcium hydroxide powder is collided and broken, thereby solving the problem of powder compaction during the treatment of hydrogen fluoride gas.

[0042] Secondly, a first partition 18 is provided at the end position of the outer shell 22, and a through-type ventilation hole 17 is provided on one side of the first partition 18. The plane where the ventilation hole 17 is located is perpendicular to the direction in which the smoke enters. During the flipping of the outer shell 22, the powder can be effectively prevented from entering the ventilation hole 17, ensuring that the ventilation hole 17 is not blocked and the gas passes smoothly.

[0043] In order to ensure that the air inlet 12 can fully absorb the flue gas into the first chamber 9, the power of the fan 2 needs to be maintained. However, if the flue gas flow rate entering the first chamber 9 is too fast, the hydrogen fluoride gas will not be completely purified.

[0044] To this end, a second chamber 10 is arranged side by side next to the first chamber 9. When the flue gas enters the second chamber 10, an adjustment assembly 14 consisting of a hose 14-1, a hard support bar 14-2, a lightweight rod 14-3, an electric telescopic rod 14-4, a support mesh plate 14-5 and a tube body 14-6 is arranged between the second chamber 10 and the flue gas channel 11. When the flue gas flow rate is too fast, the power supply of the electric telescopic rod 14-4 is started to extend the length of the electric telescopic rod 14-4. At this time, the angle between the axial centerline direction of the lightweight rod 14-3 and the electric telescopic rod 14-4 increases. During the increase, the lightweight rod 14-3 stretches the end position of the hose 14-1, so that the end position of the hose 14-1 is trumpet-shaped. When the diameter of the hose 14-1 suddenly increases, the flow rate of the flue gas can be effectively reduced, so that the flue gas can pass through the shell 22 smoothly, and the hydrogen fluoride gas in the flue gas is fully purified and treated.

[0045] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A workshop welding fume treatment device, comprising a welding workbench (13), a fume treatment table (1) being fixed on one side of the middle portion of the welding workbench (13), characterized in that: The interior of the flue gas treatment table (1) is provided with a first chamber (9) and a second chamber (10) connected via a circular hole (24), and the backs of the first chamber (9) and the second chamber (10) are provided with a first chamber door (25) and a second chamber door (26), respectively. A fan (2) is provided on the side wall of the flue gas treatment table (1) outside the first chamber (9), and the flue gas is transported to the second chamber (10) through the fan (2). An air inlet (12) is provided at the lower end of one side of the flue gas treatment table (1), and the air inlet (12) is connected to the interior of the second chamber (10) through a flue gas channel (11); A shell (22) is rotatably disposed in the first chamber (9), and a plurality of second partitions (20) are evenly installed on the inner side of the shell (22). The interior of the shell (22) is evenly divided by the second partitions (20). A through hole (21) is provided at the center of each second partition (20), and calcium hydroxide powder (27) is filled between two adjacent second partitions (20).

2. The workshop welding fume treatment device according to claim 1, characterized in that: The outer shell (22) is formed by splicing two semicircular shells, and the outer shell (22) is arranged in a columnar shape.

3. The workshop welding fume treatment device according to claim 2, characterized in that: A pipe (15) is connected to one side of the shell (22), an arc-shaped support plate (16) is provided on the inner wall of the first chamber (9), the pipe (15) is located on the inner side of the arc-shaped support plate (16), and the end of the pipe (15) is in contact with the end of the circular hole (24), the other end of the shell (22) is connected to a rotating shaft (5), and a driving member is connected via the rotating shaft (5), and a plurality of air holes (3) are evenly formed on the end of the shell (22) at one end of the rotating shaft (5).

4. The workshop welding fume treatment device according to claim 3, characterized in that: The driving member comprises a motor (8), a main gear (7) and a transmission gear (23), wherein the main gear (7) is fixed to the end of the output shaft of the motor (8), and the transmission gear (23) is fixedly mounted on the end of the rotating shaft (5), and the main gear (7) and the transmission gear (23) are meshed with each other.

5. The workshop welding fume treatment device according to claim 4, characterized in that: A first partition (18) is provided at one end of the inner side of the shell (22), and the first partition (18) is located at one end close to the pipe (15). A plurality of through-type ventilation holes (17) are opened at the center of the first partition (18), and a certain distance is maintained between the first partition (18) and the adjacent second partition (20) and the end of the shell (22).

6. The workshop welding fume treatment device according to claim 1, characterized in that: A plurality of silica gel particles (19) are placed between adjacent second separators (20), and the silica gel particles (19) are arranged in a spherical shape.

7. The workshop welding fume treatment device according to claim 3, characterized in that: A support plate (6) is fixed to the bottom of the first chamber (9), a shift fork (4) is installed on the top of the support plate (6), and the end of the rotating shaft (5) is located inside the shift fork (4). The upper end of the shift fork (4) is open, and the end faces of the shift fork (4) and the housing (22) are in contact with each other.

8. The workshop welding fume treatment device according to claim 1, characterized in that: An adjustment assembly (14) is provided between the top of the smoke channel (11) and the second chamber (10), the adjustment assembly (14) comprising a hose (14-1), a hard support bar (14-2), a lightweight rod (14-3), an electric telescopic rod (14-4), a support mesh plate (14-5), and a pipe body (14-6); One end of the tube body (14-6) extends to the inner upper end of the smoke channel (11); a hose (14-1) is fixed at the end of the tube body (14-6) inside the second chamber (10); hard support bars (14-2) are distributed in a circular array on the inner side of the hose (14-1); a support mesh plate (14-5) is provided on the inner side of the tube body (14-6); an electric telescopic rod (14-4) is fixed on the support mesh plate (14-5); and a lightweight rod (14-3) is hinged between the end of the electric telescopic rod (14-4) and the far end of the hard support bar (14-2).

9. The workshop welding fume treatment device according to claim 8, characterized in that: When the hose (14-1) is expanded from the inside, the outer shape is a bell-mouth shape, and at this time the diameter of the hose (14-1) is larger than the inner diameter of the tube body (14-6).

10. The workshop welding fume treatment device according to claim 1, characterized in that: A gas exhaust pipe is also provided in the first chamber (9).

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