Welding fume purifier for automobile frame welding table

Abstract

The invention provides a welding fume purifier for an automobile frame welding table, and relates to the field of fume purification. The welding fume purifier for the automobile beam welding table comprises a base and a shell which are fixed with each other, and is characterized in that a mixing area and a settling area are arranged in the shell, and a mixture of sulfur dioxide and sulfur trioxide is arranged in the mixing area and used for increasing the particle size of particles in welding fume and separating the particles in the welding fume; a liquid chemical flocculant is arranged in the settling zone; according to the welding fume purifier for the automobile beam welding table, through the arrangement of the settling zone and the mixing zone, the settling zone is filled with a chemical flocculant, and the mixing zone is filled with mixed gas of sulfur dioxide and sulfur trioxide, particles in fume form large-particle impurities, and the discharge rate of the large-particle particles is increased; most particles in the welding flue gas are separated, so that the workload of the filter element is greatly reduced, and the condition that the filter element needs to be replaced frequently due to blockage is reduced.

Description

Technical Field

[0001] The invention relates to the field of smoke purification, in particular to a welding smoke purifier for an automobile beam welding platform. Background Art

[0002] Smoke purification is a technology that efficiently purifies industrial waste gas smoke and dust, aiming to protect workers' health, improve the working environment and reduce pollution to the environment. Smoke is generated during welding at the automobile frame welding station. Impurities in welding smoke usually include metal oxides, nitrogen oxides, and hydrocarbons. These impurities form fine particles in the air, causing direct damage to the workers' respiratory system, skin, and eyes. They need to be purified by a smoke purifier. The smoke purifier is used to capture and filter a large amount of harmful smoke and gas generated during welding, cleaning, spraying, etc. In some high-precision cutting processes, the cutting groove can reach a size of several microns or even smaller, and corresponding impurities will also be generated. These impurities not only cause serious harm to the health of operators, such as causing respiratory diseases, but also pollute the environment.

[0003] Existing welding fume purifiers and general cutting impurity treatment equipment generally use filter elements of various materials, such as paper filter elements, activated carbon filter elements, and fiber filter elements, when dealing with these tiny particle impurities. The filter elements usually have a high filtration accuracy and can filter out tiny particles of a certain size. However, as the use time increases, the filter elements are prone to clogging and need to be replaced regularly and frequently to ensure the filtration effect. Otherwise, the filter elements will find it difficult to efficiently separate and remove welding fumes. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a welding fume purifier for an automobile beam welding platform, which solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a welding fume purifier for an automobile beam welding platform, comprising a base and a shell fixed to each other, characterized in that: a mixing zone and a settling zone are arranged inside the shell, a mixture of sulfur dioxide and sulfur trioxide is arranged inside the mixing zone, which is used to increase the particle size of particles in the welding fume and separate the particles in the welding fume, a liquid chemical flocculant is arranged inside the settling zone, an air inlet pipe for injecting the mixture of sulfur dioxide and sulfur trioxide into the mixing zone is connected to the outer surface of the shell, an exhaust pipe is connected to the outer surface of the shell, the exhaust pipe is used to transport the welding fume to the settling zone, the other end of the exhaust pipe is located in the settling zone, an exhaust assembly for purification is connected to the outer surface of the shell, and the purification assembly is used to discharge the welding fume after the particles are separated;

[0006] A rotating shell is rotatably installed inside the outer shell, and a slag discharge groove for discharging large particles of impurities is provided on the outer surface of the rotating shell, and several slag discharge grooves are arranged. A rotating mechanism for mixing and stirring the gas is installed inside the outer shell, and several fixed cylinders are fixedly installed on the inner wall of the rotating shell, and a rotating rod is rotatably connected to the inside of each fixed cylinder. Two symmetrical bimetallic strips that are in close contact with the rotating rod are fixedly inlaid on the outer surface of each fixed cylinder, and each rotating rod is used to generate heat by friction between the fixed cylinder and the bimetallic strip close to it when rotating. Several cutting grooves A and several cutting grooves B are provided inside each bimetallic strip, and a star-shaped structure is formed between the several bimetallic strips.

[0007] Preferably, the fixing tube and the rotating rod are both made of copper alloy.

[0008] Preferably, the rotating mechanism includes a motor, a rotating rod, a turntable, a gear ring, a plurality of gears and a plurality of arc-shaped pieces. The motor is fixedly connected to the outer shell, and the output end of the motor is fixedly connected to one end of the rotating rod. The rotating rod is rotatably connected to the outer shell, and a seal is arranged at the intersection of the two. The other end of the rotating rod is fixedly connected to the turntable, and the turntable is rotatably connected to the outer shell. The gear ring is located inside the turntable and fixedly connected to the outer shell. Each gear is meshed with the gear ring. Multiple gears are respectively fixedly connected to multiple rotating rods. Each arc-shaped piece is fixedly connected to the rotating rod. Each rotating rod is rotatably connected to the turntable. When the turntable rotates, it is used to drive the multiple rotating rods to rotate in a circle.

[0009] Preferably, the bottom of the rotating shell is immersed in the sedimentation zone.

[0010] Preferably, each of the exhaust components comprises an exhaust pipe and a filter element for purifying welding fumes, the filter element is installed inside the exhaust pipe, and the two are detachable, and the exhaust pipe is connected to the housing.

[0011] Preferably, the cutting grooves A and B in each of the bimetallic strips are arranged alternately, and the lengths of the cutting grooves B decrease successively.

[0012] Preferably, each of the bimetallic sheets comprises a copper sheet and an iron sheet that are bonded to each other.

[0013] Preferably, one end of each bimetallic strip is fixedly connected to a sealing strip, an arc-shaped elastic pad is fixedly connected between every two sealing strips, and the interior of the elastic pad is arranged as a pore structure, and the pore structure is used for passing gas.

[0014] Preferably, a support plate is fixedly connected between every two bimetallic strips.

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

[0016] 1. The welding fume purifier of the automobile beam welding platform has a precipitation zone and a mixing zone. The precipitation zone is filled with a chemical flocculant, and the mixing zone is a mixed gas of sulfur dioxide and sulfur trioxide. The precipitation zone and the mixing zone cooperate to form particles in the welding fume into large particles that are easy to settle. A star-shaped structure is formed between a number of bimetallic sheets, and the mixed gas can be fully mixed with the rotating action to increase the rate of generating large particles. During the rotation, the bimetallic sheets are bent by frictional heat, and when bent, the gaps between the bimetallic sheets become larger and larger with the thrust of time. The bimetallic sheets are tilted when bent by the multiple cutting grooves A and the cutting grooves B with decreasing lengths. Since most of the particles in the welding fume have been separated, the workload of the filter element is greatly reduced, and the frequent replacement of the filter element due to blockage is reduced.

[0017] 2. The welding fume purifier of the automobile beam welding table is equipped with a chemical flocculant in the sedimentation zone, which can start flocculation with the particles in the welding fume, so that small particles form large flocs, which are easier to settle and remove through subsequent treatment. A large amount of metal oxides, such as iron oxides and manganese oxides, will be generated during the welding process. These metal oxide particles are usually small and difficult to remove directly. The chemical flocculant can make these small particles gather together through adsorption and bridging to form larger particles. These particles are more likely to settle in the sedimentation zone, which is beneficial to separate the particles in the welding fume. Sulfur dioxide has a certain oxidizing property and can react chemically with some metal particles in the welding fume to form larger sulfate particles. Sulfur trioxide has strong hydrophilicity and reactivity, and can react quickly with water vapor in the welding fume to generate sulfuric acid mist. Sulfuric acid mist can adsorb the surrounding impurity particles to increase their particle size. At the same time, sulfuric acid mist can also react with alkaline impurities to further promote the formation of particles, thereby separating the particles in the welding fume. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a rear view of the housing of the present invention;

[0020] Figure 3 It is a cross-sectional view of the front view of the overall structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the gear ring and gear structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the bimetallic strip of the present invention when it is normally closed;

[0023] Figure 6 It is a schematic diagram of the structure of the bimetallic strip after bending of the present invention;

[0024] Figure 7 This is a schematic diagram of the housing structure of the present invention;

[0025] Figure 8 A sectional view of the front view of the housing of the present invention;

[0026] Fig. 9 This is a schematic diagram of the rotating shell structure of the present invention;

[0027] Fig.10 A cross-sectional view showing a schematic structural diagram of a bimetallic strip and an elastic pad of the present invention;

[0028] Fig.11 It is a schematic diagram of the bimetallic strip structure of the present invention.

[0029] Among them: 1. Base; 2. Shell; 3. Mixing zone; 4. Sedimentation zone; 5. Inlet pipe; 6. Exhaust pipe; 7. Rotating shell; 8. Slag discharge trough; 9. Fixed cylinder; 10. Rotating rod; 11. Bimetallic strip; 101. Cutting groove A; 102. Cutting groove B; 103. Copper sheet; 104. Iron sheet; 12. Motor; 13. Rotating rod; 14. Turntable; 15. Gear ring; 16. Gear; 17. Arc sheet; 18. Exhaust pipe; 19. Filter element; 20. Sealing strip; 21. Elastic pad; 22. Support plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0034] like Figure 1-Figure 11As shown, a welding fume purifier for an automobile beam welding platform comprises a fixed base 1 and a shell 2, wherein the base 1 is mounted on the bottom of the shell 2, and the base 1 and the shell 2 are detachable, and characterized in that: one end of the shell 2 is in an arc shape, and a mixing zone 3 and a precipitation zone 4 are arranged inside the shell 2, and a mixture of sulfur dioxide and sulfur trioxide is arranged inside the mixing zone 3, which is used to increase the particle size of particles in the welding fume and separate the particles in the welding fume, sulfur dioxide is used to make the metal particles in the welding fume form larger sulfate particles, sulfur trioxide is used to react with water vapor in the welding fume to generate sulfuric acid mist, and sulfuric acid mist is used to adsorb impurity particles in the welding fume to increase their particle size and separate the impurities in the welding fume. The particles are separated. In general, a mixture of sulfur dioxide and sulfur trioxide will not react. This is because sulfur dioxide and sulfur trioxide are two different compounds. The chemical reaction between them requires specific conditions or catalysts to proceed. Therefore, a mixture of sulfur dioxide and sulfur trioxide is used. Sulfur dioxide has a certain oxidizing property and can react chemically with some metal particles in welding smoke to form larger sulfate particles, which separate the particles in welding smoke. Sulfur trioxide has strong hydrophilicity and reactivity. It can react quickly with water vapor in welding smoke to generate sulfuric acid mist. Sulfuric acid mist can absorb the surrounding impurity particles to increase their particle size. At the same time, sulfuric acid mist can also react with alkaline The impurities undergo a neutralization reaction, which further promotes the formation of particles and facilitates the separation of particles in the welding fume. A liquid chemical flocculant is arranged inside the sedimentation zone 4. The chemical flocculant, such as polyacrylamide PAM and polyaluminium chloride PAC, can begin to flocculate with the particles in the welding fume, so that small particles form large flocs, thereby separating the particles in the welding fume. These flocs are more easily settled and removed by subsequent treatment devices. The outer surface of the shell 2 is connected to an intake pipe 5 for injecting a mixture of sulfur dioxide and sulfur trioxide into the mixing zone 3. A one-way valve is installed inside the intake pipe 5. The outer surface of the shell 2 is connected to an exhaust pipe 6 for conveying the welding fume to the sedimentation zone. 4, the other end of the exhaust pipe 6 is located in the sedimentation zone 4, and the outer surface of the shell 2 is connected to an exhaust assembly for purification, and the purification assembly is used to discharge the welding fume after the particles are separated. Each exhaust assembly includes an exhaust pipe 18 and a filter element 19 for purifying the welding fume. The filter element 19 is installed inside the exhaust pipe 18, and the two are detachable. The exhaust pipe 18 is connected to the shell 2, so that the gas in the mixing zone 3 can be discharged from the exhaust pipe 18. The filter element 19 is used for the final purification of the fume. Since most of the ions in the welding fume have been separated by forming large particles, the workload of the filter element 19 is reduced, and the filter element 19 is prevented from being blocked and frequently replaced.

[0035] The outer shell 2 is internally rotatably installed with a rotating shell 7 for rotation. The outer surface of the rotating shell 7 is provided with a slag discharge groove 8 for discharging large particles of impurities, and a plurality of slag discharge grooves 8 are provided. The bottom of the rotating shell 7 is immersed in the sedimentation area 4, which is conducive to the separated particles entering the sedimentation area 4, and is also conducive to combining the applied liquid and gas to separate the particles in the welding fume together, so as to improve the separation efficiency of the particles in the welding fume and the separation effect of the particles in the fume. The inner part of the outer shell 2 is installed with a rotating mechanism for mixing and stirring the gas, and the rotating mechanism includes an electric The motor 12, the rotating rod 13, the rotating disk 14, the gear ring 15, a plurality of gears 16 and a plurality of arc-shaped pieces 17, the motor 12 is fixedly connected to the housing 2, and the output end of the motor 12 is fixedly connected to one end of the rotating rod 13, the rotating rod 13 is rotatably connected to the housing 2, and the intersection of the two is sealed, the other end of the rotating rod 13 is fixedly connected to the rotating disk 14, the rotating disk 14 is rotatably connected to the housing 2, the gear ring 15 is located inside the rotating disk 14, and is fixedly connected to the housing 2, each gear 16 is meshed with the gear ring 15, and the plurality of gears 16 are respectively connected to the plurality of rotating disks. The movable rod 10 is fixedly connected, each arc-shaped piece 17 is fixedly connected to the rotating rod 13, and each rotating rod 10 is rotatably connected to the turntable 14. When the turntable 14 rotates, it is used to drive the multiple rotating rods 10 to rotate in a circle. The rotating rod 13 is driven to rotate by the motor 12. The rotating rod 13 can not only drive the multiple arc-shaped pieces 17 to rotate, so that the welding fume, sulfur dioxide and sulfur trioxide are mixed, but also can transport the large particles of foreign matter produced after the mixing to the outside. The rotation of the rotating rod 13 can also drive the turntable 14 to rotate, so that the turntable 14 drives the multiple rotating rods 10 to do circular motion. , and then drive multiple gears 16 to make circular motion. Since the position of the gear ring 15 is fixed, under the action of the circular motion of the gear 16, the gear 16 can rotate along the inner wall of the gear ring 15 to generate heat by friction. In addition, during the circular rotation of the rotating rod 10, it can drive the star-shaped structure formed between the several bimetallic strips 11 to rotate. On the one hand, it is beneficial to the rapid mixing of the gas, facilitates the rapid generation of large particle precipitation, and reduces the time for generating large particle precipitation. On the other hand, it prevents the particles that are separated and form large particles from causing blockage.

[0036] A plurality of fixed cylinders 9 are fixedly installed on the inner wall of the rotating shell 7, and a rotating rod 10 is rotatably connected to the interior of each fixed cylinder 9. Two bimetallic strips 11 that are symmetrical and in close contact with the rotating rod 10 are fixedly inlaid on the outer surface of each fixed cylinder 9. When each rotating rod 10 rotates, it is used to generate heat by friction between the fixed cylinder 9 and the bimetallic strip 11 close to it. The fixed cylinder 9 and the rotating rod 10 are both made of copper alloy. The hardness and wear resistance of the copper alloy can be improved by adjusting the composition. The aluminum alloy is light in weight and has good thermal conductivity. The wear resistance can be improved by surface treatment. For example, anodizing can form a hard oxide film on the surface of the aluminum alloy to reduce wear. The interior of each bimetallic strip 11 is provided with a plurality of There are a plurality of cutting grooves A101 and a plurality of cutting grooves B102, and the cutting grooves A101 and the cutting grooves B102 in each bimetallic strip 11 are arranged alternately, and the length of the cutting grooves B102 decreases successively, so that the end of the bimetallic strip 11 is more likely to bend, thereby facilitating the opening of a channel for slag discharge between the ends of multiple groups of bimetallic strips 11. Since the length of the cutting grooves B102 decreases successively, the bimetallic strip 11 is more likely to deviate to one side when bending, thereby facilitating the separated granular impurities to slide and be discharged into the precipitation area 4. A star-shaped structure is formed between the plurality of bimetallic strips 11, and each bimetallic strip 11 includes a copper sheet 103 and an iron sheet 104 that fit together. The copper sheet 103 and the iron sheet 104 The bimetallic strip 11 is flat as a whole and is tightly fitted together and in a state of equilibrium. When the bimetallic strip 11 is heated, the copper strip 103 expands more than the iron strip 104 due to the different thermal expansion coefficients of the copper strip 103 and the iron strip 104. Since the two metal strips are fitted together, the copper strip 103 and the iron strip 104 cannot expand freely. Therefore, the expansion of the copper strip 103 will be restricted by the iron strip 104, and the expansion of the iron strip 104 will also be affected by the copper strip 103. Since the copper strip 103 expands more and the iron strip 104 expands less, the bimetallic strip 11 will bend to the side of the iron strip 104 after being heated. This bending is due to the difference in thermal expansion of the two metals and the limitation of the fitting structure. As a result of the combined effect, a sealing strip 20 is fixedly connected to one end of each bimetallic strip 11, an arc-shaped elastic pad 21 is fixedly connected between every two sealing strips 20, and the interior of the elastic pad 21 is configured as a fine pore structure, and the fine pore structure is used to pass gas. When the bimetallic strip 11 bends, the elastic pad 21 will also bend, thereby increasing the bending amplitude, and large particles of impurities can slide along the arc surface of the elastic pad 21. The greater the bending amplitude of the bimetallic strip 11, the faster the rate at which the separated particles are discharged. A support plate 22 is fixedly connected between every two bimetallic strips 11. The support plate 22 is provided to provide support force for the bimetallic strip 11 to prevent the bimetallic strip 11 from deviating toward the end close to the fixed tube 9.

[0037] Working principle:

[0038] First, it is necessary to connect the external fan and air pipe to the outermost end of the exhaust pipe 6, and the smoke generated during welding is sucked into the exhaust pipe 6 through the fan and air pipe. The welding smoke in the exhaust pipe 6 passes through the sedimentation area 4, the slag discharge tank 8 and the mixing area 3 in turn. It should be noted that a booster pump can be installed at one end of the air pipe to provide sufficient pressure so that the welding smoke in the exhaust pipe 6 passes through the liquid in the sedimentation area 4 and is transported to the mixing area 3. When the welding smoke enters the sedimentation area 4, since the sedimentation area 4 is filled with chemical flocculants, such as polyacrylamide PAM and polyaluminum chloride PAC, they can begin to flocculate with the particles in the welding smoke, so that small particles form large particle flocs, which are easier to settle and removed through subsequent treatment. It is noted that a large amount of metal oxides, such as iron oxides and manganese oxides, will be generated during the welding process. These metal oxide particles are usually small and difficult to remove directly. Chemical flocculants can aggregate these small particles together through adsorption and bridging to form larger particles. These particles are more likely to settle in the sedimentation zone 4, which is beneficial for separating the particles in the welding fume. Next, the welding fume enters the mixing zone 3, i.e., the interior of the rotating shell 7, through the multiple slag discharge grooves 8 at the rotating shell 7. Since each bimetallic strip 11 is provided with a plurality of cutting grooves A101 and cutting grooves B102, and the interior of the elastic pad 21 is provided with a fine pore structure, part of the fume will pass through the cutting grooves A101 and cutting grooves B102. and elastic pad 21, and distributed in the mixing zone 3. It should be noted that at this time, the sulfur dioxide and sulfur trioxide gases need to be evenly mixed, and then transported to the intake pipe 5 through an external air pump, and then enter the mixing zone 3. At the same time, the motor 12 is started to drive the rotating rod 13 to rotate, and the rotating rod 13 drives the turntable 14 to rotate. The turntable 14 drives multiple rotating rods 10 to rotate in a circle. The multiple rotating rods 10 drive multiple fixed cylinders 9 to move in a circle. The multiple fixed cylinders 9 drive the rotating shell 7 to rotate under the coordinated action. Under the action of the star-shaped structure formed between the bimetallic strips 11, the mixed gas is stirred. On the one hand, the distribution of the mixed gas is more uniform, and on the other hand, these gases can be fully mixed. It should be noted that sulfur dioxide has a certain oxidizing property and can react chemically with some metal particles in the welding fume to form larger sulfate particles. Sulfur trioxide has strong hydrophilicity and reactivity and can react quickly with water vapor in the welding fume to generate sulfuric acid mist. The sulfuric acid mist can adsorb the surrounding impurity particles to increase their particle size. At the same time, the sulfuric acid mist can also react with the alkaline impurities to further promote the formation of particles, thereby separating the particles in the welding fume. A part of the separated particles remain in the middle of the mixing zone 3, and the other part of the particles settle in the precipitation zone 4. It should be noted that at this time, multiple groups of sealing strips 20 are in close contact to reduce the probability of uneven mixed gas during rotation.

[0039] Next, the multiple rotating rods 10 respectively drive the multiple gears 16 to rotate in a circle during the rotation process. Since the multiple gears 16 are meshed with the gear ring 15, the position of the gear ring 15 remains unchanged. At this time, the multiple gears 16 respectively drive the multiple rotating rods 10 to rotate in the process of circular motion, and respectively rub with the multiple fixed cylinders 9 and the bimetallic strip 11 to generate heat. The heat of the fixed cylinder 9 can also be transferred to the bimetallic strip 11. Since the bimetallic strip 11 is composed of a copper sheet 103 and an iron sheet 104, and the expansion coefficient of the copper sheet 103 is greater than that of the iron sheet 104, the copper sheet 103 bends toward the iron sheet 104 during the expansion process. Due to the existence of the cutting groove A101, when the bimetallic strip 11 is heated, the stress can be released to a certain extent at the cutting groove A101. Because the material at the cutting groove A101 is relatively small, the stress concentration is reduced. When the two metals expand due to heat, in the local area near the cutting groove, the stress is more likely to be concentrated on the uncut part, making these parts more likely to bend, and finally bend to form a shape as shown in the figure. Figure 6 In the state shown, larger gaps are formed between the bimetallic strips 11, which is more conducive to the large particles settling into the sedimentation zone 4 along these gaps. By setting a plurality of cutting grooves B102, and the lengths of the cutting grooves B102 decrease successively, the bimetallic strip 11 is inclined and bent, which is conducive to the large particles sliding along the inclined surface of the bimetallic strip 11 into the sedimentation zone 4. Moreover, the rotating rod 13 can also drive the multiple arc-shaped strips 17 to rotate during the rotation process. The rotation of the arc-shaped strips 17 produces an outward thrust on the large particles, thereby increasing the sedimentation rate of the large particles. It should be noted that it takes a certain amount of time for friction to generate heat and bend the bimetallic strip 11, and during this period of time, the mixed gas can fully react and form large particles, thereby being able to fully separate the particles in the welding fume.

[0040] Finally, the gas passes through the slag discharge groove 8 of the rotating shell 7 and enters the three exhaust pipes 18. The filter element 19 in the exhaust pipe 18 further performs purification work. It should be noted that since most of the particles in the welding fume have been separated, the workload of the filter element 19 is greatly reduced, and the filter element 19 needs to be replaced more frequently due to blockage. Moreover, after the separation work is completed, since the rotating shell 7 is immersed in the liquid in the sedimentation area 4, when the rotating shell 7 rotates, the bent parts of the multiple bimetallic strips 11 can contact the liquid in the sedimentation area 4 in turn during the rotation, so as to achieve rapid cooling, thereby facilitating subsequent purification work.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0042] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding fume purifier for an automobile beam welding platform, comprising a base (1) and a housing (2) fixed to each other, characterized in that: The shell (2) is provided with a mixing zone (3) and a settling zone (4) inside. The mixing zone (3) is provided with a mixture of sulfur dioxide and sulfur trioxide for increasing the particle size of particles in the welding fume and separating the particles in the welding fume. The settling zone (4) is provided with a liquid chemical flocculant. The outer surface of the shell (2) is connected to an air inlet pipe (5) for injecting the mixture of sulfur dioxide and sulfur trioxide into the mixing zone (3). The outer surface of the shell (2) is connected to an exhaust pipe (6) for conveying the welding fume to the settling zone (4). The other end of the exhaust pipe (6) is located in the settling zone (4). The outer surface of the shell (2) is connected to an exhaust assembly for purification. The purification assembly is used to discharge the welding fume after the particles are separated. A rotating shell (7) for rotating is rotatably installed inside the outer shell (2). A slag discharge groove (8) for discharging large particles of impurities is provided on the outer surface of the rotating shell (7). A plurality of slag discharge grooves (8) are provided. A rotating mechanism for mixing and stirring the gas is installed inside the outer shell (2). A plurality of fixed cylinders (9) are fixedly installed on the inner wall of the rotating shell (7). A rotating rod (10) is rotatably connected inside each fixed cylinder (9). Two symmetrical bimetallic strips (11) in close contact with the rotating rod (10) are fixedly embedded on the outer surface of each fixed cylinder (9). When each rotating rod (10) rotates, it is used to generate heat by friction between the fixed cylinder (9) and the bimetallic strip (11) adjacent thereto. A plurality of cutting grooves A (101) and a plurality of cutting grooves B (102) are provided inside each bimetallic strip (11). A star-shaped structure is formed between the plurality of bimetallic strips (11).

2. The welding fume purifier for automobile beam welding platform according to claim 1 is characterized in that: The fixed cylinder (9) and the rotating rod (10) are both made of copper alloy.

3. The welding fume purifier for automobile beam welding platform according to claim 1, characterized in that: The rotating mechanism comprises a motor (12), a rotating rod (13), a rotating disk (14), a gear ring (15), a plurality of gears (16) and a plurality of arc-shaped sheets (17); the motor (12) is fixedly connected to the housing (2), and the output end of the motor (12) is fixedly connected to one end of the rotating rod (13); the rotating rod (13) is rotatably connected to the housing (2), and a sealing arrangement is arranged at the intersection of the two; the other end of the rotating rod (13) is fixedly connected to the rotating disk (14); the rotating disk (14) is ) is rotatably connected to the housing (2), the gear ring (15) is located inside the rotating disk (14) and is fixedly connected to the housing (2), each gear (16) is meshedly connected to the gear ring (15), the plurality of gears (16) are respectively fixedly connected to the plurality of rotating rods (10), each arc-shaped piece (17) is fixedly connected to the rotating rod (13), each rotating rod (10) is rotatably connected to the rotating disk (14), and the rotating disk (14) is used to drive the plurality of rotating rods (10) to rotate in a circle when rotating.

4. The welding fume purifier for automobile beam welding platform according to claim 1, characterized in that: The bottom of the rotating shell (7) is immersed in the sedimentation zone (4).

5. The welding fume purifier for automobile beam welding platform according to claim 1, characterized in that: Each of the exhaust components comprises an exhaust pipe (18) and a filter element (19) for purifying welding fumes. The filter element (19) is installed inside the exhaust pipe (18) and the two are detachable. The exhaust pipe (18) is connected to the housing (2).

6. The welding fume purifier for automobile beam welding platform according to claim 1, characterized in that: The cutting grooves A (101) and the cutting grooves B (102) in each bimetallic strip (11) are arranged alternately, and the lengths of the cutting grooves B (102) decrease in sequence.

7. The welding fume purifier for automobile beam welding platform according to claim 1 or 6, characterized in that: Each bimetallic sheet (11) comprises a copper sheet (103) and an iron sheet (104) that fit together.

8. The welding fume purifier for automobile beam welding platform according to claim 1, characterized in that: One end of each bimetallic strip (11) is fixedly connected to a sealing strip (20), an arc-shaped elastic pad (21) is fixedly connected between every two sealing strips (20), and the interior of the elastic pad (21) is provided with a fine pore structure, and the fine pore structure is used for passing gas.

9. The welding fume purifier for automobile beam welding platform according to claim 1, characterized in that: A support plate (22) is fixedly connected between every two bimetallic strips (11).

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