A stainless steel welding device for chemical industry

Abstract

The invention discloses a chemical stainless steel welding device, which relates to the technical field of stainless steel welding and comprises a welding box, wherein driving wheels are symmetrically and fixedly connected on both sides of the welding box, a welding gun is installed on the side of the welding box close to the driving wheel, and air in the welding box and the suction cup is discharged by an air pump, so that the driving wheel on the welding box is closely fitted to the outer surface of the chemical stainless steel tank body, and the driving wheel is fitted to the outer surface of the chemical stainless steel tank body and moves by manually twisting a manual regulating valve, thereby avoiding the problem that workers need to perform high-altitude operations when welding the chemical stainless steel tank body, and further reducing the deviation during manual hand-held welding, and effectively avoiding the problem that the existing hand-held welding gun cannot be fitted on the chemical stainless steel tank body for mobile positioning welding, thereby improving the accuracy and convenience of chemical stainless steel tank body welding, and thus effectively improving the overall work efficiency of chemical stainless steel tank body welding.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel welding, in particular to a stainless steel welding device for chemical industry. Background Art

[0002] Stainless steel storage tanks have excellent corrosion resistance and can resist the erosion of various chemical substances. They are not easy to rust, thus extending their service life. This makes them very suitable for storing liquids or gases, especially in the chemical, pharmaceutical and other industries. For occasions with complex and corrosive media, stainless steel storage tanks show excellent corrosion resistance and ensure storage safety.

[0003] At present, most of the stainless steel tanks for chemical industry are relatively large. Manual welding will cause welding deviations during the welding process. At the same time, manual welding requires climbing to a high place. When welding at a high place, the posture adjustment is limited, which will cause deviations during welding. However, the existing handheld welding cannot be effectively performed on chemical stainless steel for mobile positioning welding.

[0004] At the same time, when welding chemical equipment such as reactors, piping systems and storage tanks, the surface of the unwelded chemical stainless steel tank is easily contaminated by oxides and other impurities. These contaminants may be drawn into the weld to form welding defects such as slag inclusions and pore cracks, which will reduce the strength, toughness and density of the weld, thereby affecting the safe operation of the chemical equipment. Traditional pre-welding preparation usually requires manual removal of contaminants using tools such as sandpaper and scrapers, which not only increases the time for pre-welding preparation and the workload of workers, but also the cleaning effect of manual cleaning is difficult to guarantee, which may lead to uneven weld quality and increase the workload of subsequent inspections and repairs. Summary of the invention

[0005] In view of this, and in view of the deficiencies in the prior art, the present invention provides a stainless steel welding device for chemical use to solve the problem that the prior art does not clean pollutants resulting in welding defects such as slag inclusions, pore cracks, and the poor effect of traditional manual cleaning resulting in uneven weld quality.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stainless steel welding device for chemical industry, comprising a welding box, both sides of the welding box are symmetrically fixedly connected with driving wheels, a welding gun is installed on the side of the welding box close to the driving wheel, a plurality of suction cups are symmetrically fixedly connected to the welding box on one side of the welding gun, the plurality of suction cups are connected to the inside of the welding box, an air pump is installed inside the welding box, and a manual regulating valve is fixedly connected to the plurality of suction cups;

[0007] The top of the welding box is provided with a cleaning mechanism, one side of the welding box is provided with a preheating mechanism, and the welding box is provided with a cooling mechanism;

[0008] The cleaning mechanism includes a limit groove, which is symmetrically opened on the top of the welding box. A limit rod is slidably connected inside the limit groove. The end of the limit rod close to the suction cup is fixedly connected to the cleaning box. A telescopic spring is fixedly connected between the end of the limit rod away from the cleaning box and the limit groove. A connecting rod is slidably connected to the groove on the top of the welding box. The end of the connecting rod away from the welding box is fixedly connected to the cleaning box. A servo motor is fixedly connected to one side of the cleaning box, and a reciprocating cleaning component is fixedly connected to the output shaft of the servo motor.

[0009] Preferably, the reciprocating cleaning assembly includes a plurality of reciprocating screws, which are equidistantly rotatably connected to the inner wall of the cleaning box, one end of the reciprocating screw located in the middle of the cleaning box is fixedly connected to the output shaft of the servo motor, and the outer surfaces of the reciprocating screws on the side away from the servo motor are fixedly connected to synchronous wheels, and the outer surfaces of the synchronous wheels are connected through a synchronous belt transmission, and the side of the cleaning box away from the connecting rod is rotatably connected to a limiting pulley, and the outer surface of the limiting pulley is in contact with the outer side of the synchronous belt.

[0010] Preferably, a plurality of transmission rods are equidistantly rotatably connected to the inner wall of the cleaning box, gears are fixedly connected to the outer surfaces of the plurality of transmission rods, and a stainless steel brush is fixedly connected to one end of the plurality of transmission rods away from the gears.

[0011] Preferably, the outer surfaces of the reciprocating screws are threadedly connected with nuts, the tops of the nuts are slidably connected to the inside of a slide groove opened on the inner surface of a cleaning box, the sides of the nuts away from the cleaning box are fixedly connected with racks, and the gears are meshed with the racks.

[0012] Preferably, the preheating mechanism includes a mounting rod, which is fixedly connected to a rectangular groove of the welding box on one side of the suction cup, a baffle is rotatably connected to the outer surface of the mounting rod, a heater is installed in the side of the baffle away from the welding box, and a breathable plate is fixedly connected to the side of the baffle away from the welding box, and the breathable plate is located outside the rectangular groove.

[0013] Preferably, a torsion spring is fixedly connected between the baffle and the rectangular groove on the welding box, and the torsion spring is sleeved on the outer surface of the mounting rod.

[0014] Preferably, an outer surface of a nut close to the baffle is fixedly connected with an extrusion rod, and a side of the baffle close to the extrusion rod is fixedly connected with a plurality of protrusions at equal intervals, and the plurality of protrusions are located on the movement trajectory of the extrusion rod.

[0015] Preferably, the cooling mechanism includes an air collecting hood, which is fixedly connected to the side of the welding box away from the suction cup, and an exhaust pipe is fixedly connected to the side of the welding box away from the welding box. The air outlet of the vacuum pump is connected to the air inlet of the exhaust pipe, and one end of the exhaust pipe is threadedly connected to a bellows through a nut.

[0016] Compared with the prior art, the present invention provides a stainless steel welding device for chemical industry, which has the following beneficial effects:

[0017] The air in the welding box and the suction cup is discharged through the vacuum pump, so that the driving wheel on the welding box is closely fitted to the outer surface of the chemical stainless steel tank body, and the manual regulating valve is manually turned to make the driving wheel fit on the outer surface of the chemical stainless steel tank body and move, and the worker holds the welding box to make it move at a uniform speed on the outer surface of the chemical stainless steel tank body, thereby avoiding the problem of workers having to climb when welding chemical stainless steel tank bodies, thereby reducing the deviation during manual hand-held welding, and effectively avoiding the problem of the existing inability to hold a handheld welding gun on the chemical stainless steel tank body for mobile positioning welding, thereby improving the accuracy and convenience of chemical stainless steel tank body welding, thereby effectively improving the overall work efficiency of chemical stainless steel tank body welding.

[0018] The nut drives the extrusion rod to continuously extrude multiple protrusions, causing the baffle to reciprocate along the mounting rod, and the heater is used to evenly heat the area near the weld of the chemical stainless steel tank body, so that the surface and interior of the equipment can reach the ideal preheating temperature, thereby burning impurities attached to the surface, making it easier to separate impurities attached to the surface of the chemical stainless steel tank body, which is beneficial to the cleaning of the welding area, thereby improving the removal efficiency and removal effect of impurities on the surface of the chemical stainless steel tank body.

[0019] The reciprocating screw is driven to rotate by a servo motor, and under the action of a synchronous wheel, a synchronous belt and a limiting pulley, the rack on the nut is driven to reciprocate along the surface of the reciprocating screw, and the rack and the gear are meshed with each other, so that the stainless steel brushes on multiple transmission rods are intermittently reciprocated to clean the pollutants attached to the welding area of ​​the chemical stainless steel tank body, thereby ensuring that the welding area is clean and tidy, which can not only effectively reduce the occurrence of welding defects, improve welding quality, and improve the strength and bearing capacity of the welded joint, but also avoid the problem of welding deviation caused by shaking of the welding gun during the welding process, thereby improving the stability of the welding process, ensuring the safe operation of chemical equipment, and realizing automatic cleaning, reducing the tediousness and time-consuming manual operation.

[0020] The cleaned pollutants are blocked by the baffle to prevent the fallen pollutants from falling into the welding gun position where welding is being performed, and the baffle is prompted to perform reciprocating swinging motion under the extrusion effect between the extrusion rod and the multiple protrusions and the torque force of the torsion spring, thereby the pollutants that fall on the baffle can be swung and shaken into the rectangular groove, thereby preventing the fallen pollutants from being mixed in the weld and forming defects such as inclusions and pores, thereby ensuring the mechanical properties and sealing of the weld and the welding quality.

[0021] The cam is driven to rotate by the rotating shaft of the vacuum pump, and under the action of the reset spring, the cam extrusion slide bar slides back and forth up and down, and then the pipe mouth of the bellows is driven to swing back and forth up and down continuously through the extrusion plate. This can effectively purge the newly welded weld, thereby accelerating the cooling process of the weld and reducing the risk of welding deformation and cracks, thereby improving the stability and durability of the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the welding box in the present invention in the welding state;

[0024] Figure 3 It is a schematic diagram of the cross-section structure of the welding box in the present invention;

[0025] Figure 4 It is a schematic diagram of the structure inside the cleaning box of the present invention;

[0026] Figure 5 It is an enlarged structural diagram of the limit rod in the present invention;

[0027] Figure 6 This is an enlarged view of the structure inside the cleaning box of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of a part of the cleaning box in the present invention;

[0029] Figure 8 It is a structural exploded diagram of the cleaning mechanism in the present invention;

[0030] Fig. 9 This is an enlarged view of the structure of the baffle in the present invention;

[0031] Fig.10 For the present invention Fig. 9 A magnified view of the structure at center A;

[0032] Fig.11 It is an enlarged structural diagram of the preheating mechanism in the present invention;

[0033] Fig.12It is a schematic diagram of the structure inside the welding box of the present invention;

[0034] Fig.13 It is a schematic diagram of the cross-section structure of the gas collecting hood in the present invention;

[0035] Fig.14 It is a structural schematic diagram of the cooling mechanism in the present invention.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1. Welding box; 101. Driving wheel; 102. Welding gun; 103. Suction cup; 104. Air pump; 105. Manual regulating valve;

[0038] Cleaning mechanism: 2, limit groove; 201, limit rod; 202, cleaning box; 203, telescopic spring; 204, connecting rod; 205, servo motor; 206, reciprocating screw; 207, transmission rod; 2071, gear; 2072, stainless steel brush; 2073, nut; 2074, rack; 208, synchronous wheel; 209, synchronous belt; 210, limit pulley;

[0039] Preheating mechanism: 3, mounting rod; 301, baffle; 302, heater; 303, air permeable plate; 304, torsion spring; 305, extrusion rod; 306, bump; 307, rectangular groove;

[0040] Cooling mechanism: 4, air collecting hood; 401, exhaust pipe; 402, bellows. DETAILED DESCRIPTION

[0041] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0042] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0043] Example 1: Please refer to Figures 1 to 8As shown, in order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a stainless steel welding device for chemical industry, including a welding box 1, both sides of the welding box 1 are symmetrically fixedly connected with driving wheels 101, and the driving wheel 101 is built with a driving motor for driving the roller on the driving wheel 101 to rotate. A welding gun 102 is installed on the side of the welding box 1 close to the driving wheel 101, and a plurality of suction cups 103 are symmetrically fixedly connected to the side of the welding box 1 located on the welding gun 102, and the plurality of suction cups 103 are all connected to the inside of the welding box 1, and an air pump 104 is installed inside the welding box 1, wherein the wind direction of the air pump 104 flows from the side of the welding box 1 located on the suction cup 103 to the side of the welding box 1 away from the suction cup 103. A manual regulating valve 105 is fixedly connected to the plurality of suction cups 103, which is used to adjust the air intake of the plurality of suction cups 103, so as to adjust the overall adsorption force of the welding box 1. A cleaning mechanism is provided on the top of the welding box 1. The cleaning mechanism includes a limit groove 2. The limit groove 2 is symmetrically opened on the top of the welding box 1. A limit rod 201 is slidably connected inside the limit groove 2. The end of the limit rod 201 close to the suction cup 103 is fixedly connected to a cleaning box 202, wherein the cleaning box 202 is arc-shaped as a whole, which is used to better fit the outer surface of chemical equipment such as reactors and storage tanks. A telescopic spring 203 is fixedly connected between the end of the limit rod 201 away from the cleaning box 202 and the limit groove 2. A connecting rod 204 is slidably connected to the groove on the top of the welding box 1. The end of the connecting rod 204 away from the welding box 1 is fixedly connected to the cleaning box 202, thereby ensuring the stability of the cleaning box 202. A servo motor 205 is fixedly connected to one side of the cleaning box 202, and the output shaft of the servo motor 205 is fixedly connected to a reciprocating cleaning assembly.

[0044] The reciprocating cleaning assembly includes a plurality of reciprocating screws 206, which are equidistantly connected to the inner wall of the cleaning box 202, one end of the reciprocating screw 206 located in the middle of the cleaning box 202 is fixedly connected to the output shaft of the servo motor 205, and the outer surfaces of the plurality of reciprocating screws 206 on the side away from the servo motor 205 are fixedly connected to the synchronous wheel 208, and the outer surfaces of the synchronous wheels 208 are connected by a synchronous belt 209. The side of the cleaning box 202 away from the connecting rod 204 is rotatably connected to the limiting pulley 210, and the outer surface of the limiting pulley 210 is in contact with the outer side of the synchronous belt 209. The inner wall of the cleaning box 202 is equidistantly connected to the multiple transmission rods 207. The outer surfaces of the plurality of transmission rods 207 are fixedly connected to the gears 2071, and the ends of the plurality of transmission rods 207 away from the gears 2071 are fixedly connected to the stainless steel brush 2072.

[0045] In addition, since the cleaning box 202 is in an arc shape as a whole, the ends of the multiple transmission rods 207 arranged on the cleaning box 202 away from the cleaning box 202 are also in an arc shape as a whole, so that the stainless steel brushes 2072 arranged on the multiple transmission rods 207 are in an arc shape as a whole, thereby improving the cleaning effect of removing pollutants on the surfaces of chemical equipment such as reactors and storage tanks.

[0046] The outer surfaces of multiple reciprocating screws 206 are threadedly connected with nuts 2073, and the top of the nut 2073 is slidably connected to the inside of a slide groove opened on the inner surface of the cleaning box 202, and the slide groove is located directly above the reciprocating screw 206. The side of the nut 2073 away from the cleaning box 202 is fixedly connected with a rack 2074, wherein the racks 2074 located on both sides of the cleaning box 202 are arranged on the side of the nut 2073 close to the servo motor 205, and the racks 2074 located in the middle of the cleaning box 202 are arranged on both sides of the nut 2073, and the gear 2071 is meshed with the rack 2074.

[0047] Working process: When in use, the worker first starts the vacuum pump 104 and starts it running, and uses it to exhaust the air in the welding box 1 and the suction cup 103, so that the inside of the welding box 1 and the suction cup 103 is in a negative pressure state, causing the external air to flow into the welding box 1 from the inside of the suction cup 103, and then the driving wheel 101 on the welding box 1 is attached to the outer surface of the chemical stainless steel tank to be welded, and the adsorption force generated by the suction cup 103 makes the driving wheel 101 on the welding box 1 fit tightly to its surface, thereby facilitating the worker to align the welding gun 102 on the welding box 1 with the position of the weld to be welded, avoiding the deviation between the two during the manual welding process, thereby improving the quality and effect of the chemical stainless steel tank welding, and also facilitating the rapid positioning of the welding gun 102 during welding, thereby ensuring the stability of the welding gun 102. Then, the welding gun 102 is turned on to start welding. At this time, the worker manually turns the manual regulating valve 105, so that when the multiple suction cups 103 are adsorbed on the chemical stainless steel tank body, the air inlets on the multiple suction cups 103 are reduced, thereby reducing the adsorption force of the welding box 1, thereby facilitating the movement of the welding box 1 on the chemical stainless steel tank body, and at the same time ensuring that the adsorption of the welding box 1 on its surface does not affect the alignment of the welding gun 102 and the weld to be welded. Then, the worker holds the welding box 1 and gently pushes the welding box 1, so that the welding box 1 will not fall off the chemical stainless steel tank body due to the reduced adsorption force of the suction cup 103. At the same time, the driving motor built in the driving wheel 101 is started. The machine drives the driving wheel 101 to roll along the outer surface of the chemical stainless steel tank to be welded, and the worker adjusts the speed of the driving motor built in the driving wheel 101 according to the actual operation requirements, so as to adjust the moving speed of the welding box 1, thereby avoiding the problem that the workers need to climb when welding the chemical stainless steel tank, thereby reducing the deviation during manual hand-held welding, and effectively avoiding the problem that the existing hand-held welding gun 102 cannot be attached to the chemical stainless steel tank for mobile positioning welding, thereby improving the accuracy and convenience of chemical stainless steel tank welding, thereby effectively improving the overall work efficiency of chemical stainless steel tank welding.

[0048] When the driving wheel 101 fits against the outer surface of the chemical stainless steel tank body, the stainless steel brush 2072 first contacts its outer surface. As the suction cup 103 is continuously adsorbed, the stainless steel brush 2072 pushes the limiting rod 201 to slide into the limiting groove 2 through the transmission rod 207, causing the limiting rod 201 to continuously squeeze the telescopic spring 203 to contract, and the connecting rod 204 on the cleaning box 202 also slides along the inside of the groove. This ensures that the stainless steel brush 2072 on the cleaning box 202 is always in contact with the outer surface of the chemical stainless steel tank body, and enables the cleaning mechanism to adapt to chemical equipment of different sizes, thereby improving the applicability of the device. Then, the servo motor 205 is started to drive a reciprocating screw 206 fixedly connected thereto to rotate, and causes the synchronous wheel 208 of the reciprocating screw 206 to rotate, and then the synchronous wheel 208 drives the synchronous belt 209 to rotate along its surface, and under the action of the limiting pulley 210, the remaining synchronous wheels 208 are also caused to rotate synchronously, thereby multiple reciprocating screws 206 also rotate synchronously, and then the reciprocating screw 206 drives the nut 2073 thereon to slide back and forth along the inside of the slide groove located directly above the nut 2073, so that the rack 2074 on the nut 2073 can mesh with the multiple gears 2071 adjacent to the reciprocating screw 206, and drive the multiple gears 2071 to rotate intermittently, and when the nut 2073 moves in the opposite direction to reset along the reciprocating screw 206, the rack 2074 drives the multiple gears 2071 meshing with it. 071 performs reverse intermittent rotation, during which the multiple gears 2071 drive the multiple transmission rods 207 to rotate reciprocatingly synchronously, and the stainless steel brushes 2072 on the multiple transmission rods 207 perform intermittent reciprocating rotation, so as to clean the pollutants attached to the welding area of ​​the chemical stainless steel tank body, and as the welding box 1 moves at a constant speed, the entire welding area of ​​the chemical stainless steel tank body can be cleaned, thereby ensuring that the welding area is clean and tidy, which can not only effectively reduce the occurrence of welding defects, improve welding quality, and improve the strength and bearing capacity of the welded joint, but also avoid the problem of welding deviation caused by the shaking of the welding gun 102 during the welding process, thereby improving the stability of the welding process, ensuring the safe operation of the chemical equipment, and realizing automatic cleaning, reducing the tediousness and time-consuming manual operation.

[0049] Example 2: Please refer to Figures 9 to 11As shown, a preheating mechanism is provided on one side of the welding box 1, and the preheating mechanism includes a mounting rod 3, which is fixedly connected to a rectangular groove 307 on one side of the welding box 1 located at the suction cup 103, and the lower end of the rectangular groove 307 is tilted upward, which is used to prevent the falling pollutants from being discharged from the inside of the rectangular groove 307. A baffle 301 is rotatably connected to the outer surface of the mounting rod 3, a heater 302 is installed in the side of the baffle 301 away from the welding box 1, and a breathable plate 303 is fixedly connected to the side of the baffle 301 away from the welding box 1, and the breathable plate 303 is located outside the rectangular groove 307, and a torsion spring 304 is fixedly connected between the baffle 301 and the rectangular groove 307 on the welding box 1, and the torsion spring 304 is sleeved on the outer surface of the mounting rod 3. The outer surface of a nut 2073 close to the baffle 301 is fixedly connected with an extrusion rod 305 , and a side of the baffle 301 close to the extrusion rod 305 is fixedly connected with a plurality of protrusions 306 at equal intervals. The plurality of protrusions 306 are located on the movement trajectory of the extrusion rod 305 .

[0050] In the initial state before welding: the torsion spring 304 is restricted by the baffle 301 and is in a stressed contracted state, and the baffle 301 is rotated toward the cleaning box 202 side by the torque force of the torsion spring 304, causing the extrusion rod 305 on the nut 2073 to contact the baffle 301.

[0051] Working process: During the welding process, the nut 2073 slides back and forth along the reciprocating screw 206, causing an extrusion rod 305 on the nut 2073 to move synchronously. During this process, the extrusion rod 305 first contacts a bump 306 on the baffle 301. As the extrusion rod 305 continues to move, the bottom end of the extrusion rod 305 continuously squeezes the outer surface of the bump 306, causing it to move downward, thereby causing the baffle 301 to rotate to the side away from the cleaning box 202 with the mounting rod 3 as the connection point. At this time, the torsion spring 304 is gradually stretched by the pulling effect of the baffle 301, and the heater 302 on the baffle 301 gradually approaches the welding The outer surface of the chemical stainless steel tank body is prepared by heating the heater 302 at the same time, so that the heater 302 starts working and heats the outer surface of the chemical stainless steel tank body. The worker can set the heating temperature of the heater 302 according to the actual preheating requirements for welding, thereby uniformly heating the area near the weld of the chemical stainless steel tank body, so that the surface of the chemical stainless steel tank body can reach the ideal preheating temperature, thereby burning the impurities attached to the surface, making it easier to separate the impurities attached to the surface of the chemical stainless steel tank body, which is beneficial to the cleaning work of the welding area, thereby improving the removal efficiency and removal effect of impurities on the surface of the chemical stainless steel tank body.

[0052] At the same time, when the cleaning mechanism is cleaning the pollutants in the welding area of ​​the chemical stainless steel tank, the baffle 301 can be used to block the cleaned pollutants to prevent the fallen pollutants from falling into the welding gun 102 where welding is being performed, and under the squeezing effect between the squeezing rod 305 and the multiple protrusions 306, and the torque force of the torsion spring 304, the baffle 301 can be prompted to perform reciprocating swinging motion with the mounting rod 3 as the center point, thereby swinging the pollutants that fall on the baffle 301 and shaking them into the rectangular groove 307, thereby preventing the fallen pollutants from being mixed in the weld to form defects such as inclusions and pores, thereby ensuring the mechanical properties and sealing of the weld, and also ensuring the welding quality.

[0053] Example 3: Please refer to Figure 12 to Figure 14 As shown, the welding box 1 is provided with a cooling mechanism, which includes an air collecting hood 4, which is fixedly connected to the side of the welding box 1 away from the suction cup 103, and the side of the air collecting hood 4 away from the welding box 1 is fixedly connected with an exhaust pipe 401, and the exhaust pipe 401 is connected to the air collecting hood 4, and the air outlet of the vacuum pump 104 is connected to the air inlet of the exhaust pipe 401, which is used to suck air from multiple suction cups 103 and quickly discharge the air in the welding box 1, so that the welding box 1 is in a negative pressure state. One end of the exhaust pipe 401 is threadedly connected with a bellows 402 through a nut, wherein the bellows 402 can adjust the distance between the air outlet of the bellows 402 and the chemical stainless steel tank body by axial stretching, thereby ensuring the purging effect. The exhaust pipe 401 is connected to the bellows 402 through a nut, thereby facilitating the disassembly and assembly of the bellows 402.

[0054] Working process: During the operation of the vacuum pump 104, the air extracted from the welding box 1 by the vacuum pump 104 flows from its air outlet to the exhaust pipe 401, then flows from the exhaust pipe 401 to the inside of the bellows 402, and finally blows from the air outlet of the bellows 402 to the weld area of ​​the chemical stainless steel tank body. At the same time, as the driving wheel 101 moves at a uniform speed along the surface of the chemical stainless steel tank body, the bellows 402 also moves synchronously, thereby effectively blowing the newly welded weld, thereby accelerating the cooling process of the weld, and reducing the risk of welding deformation and cracking, thereby improving the stability and durability of the weld.

[0055] The above is a detailed introduction to the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A stainless steel welding device for chemical industry, characterized by: The welding box (1) comprises a welding box (1), wherein both sides of the welding box (1) are symmetrically fixedly connected to driving wheels (101), a welding gun (102) is installed on a side of the welding box (1) close to the driving wheel (101), a plurality of suction cups (103) are symmetrically fixedly connected to the welding box (1) on one side of the welding gun (102), the plurality of suction cups (103) are all connected to the inside of the welding box (1), an air extraction pump (104) is installed inside the welding box (1), and a manual regulating valve (105) is fixedly connected to the plurality of suction cups (103); The top of the welding box (1) is provided with a cleaning mechanism, one side of the welding box (1) is provided with a preheating mechanism, and the welding box (1) is provided with a cooling mechanism; The cleaning mechanism comprises a limit groove (2), wherein the limit groove (2) is symmetrically arranged at the top of the welding box (1), a limit rod (201) is slidably connected inside the limit groove (2), one end of the limit rod (201) close to the suction cup (103) is fixedly connected to the cleaning box (202), a telescopic spring (203) is fixedly connected between the end of the limit rod (201) away from the cleaning box (202) and the limit groove (2), a connecting rod (204) is slidably connected to the groove at the top of the welding box (1), one end of the connecting rod (204) away from the welding box (1) is fixedly connected to the cleaning box (202), a servo motor (205) is fixedly connected to one side of the cleaning box (202), and the output shaft of the servo motor (205) is fixedly connected to a reciprocating cleaning component; The reciprocating cleaning assembly comprises a plurality of reciprocating screws (206), the plurality of reciprocating screws (206) being rotatably connected to the inner wall of the cleaning box (202) at equal intervals, one end of the reciprocating screw (206) located in the middle of the cleaning box (202) being fixedly connected to the output shaft of the servo motor (205), the outer surfaces of the plurality of reciprocating screws (206) on a side away from the servo motor (205) being fixedly connected to a synchronous wheel (208), the outer surfaces of the synchronous wheels (208) being connected in transmission via a synchronous belt (209), the side of the cleaning box (202) away from the connecting rod (204) being rotatably connected to a limiting pulley (210), the outer surface of the limiting pulley (210) being in contact with the outer side of the synchronous belt (209); The preheating mechanism comprises a mounting rod (3), the mounting rod (3) being fixedly connected to a rectangular groove (307) located on one side of the welding box (1) and the suction cup (103); a baffle (301) being rotatably connected to the outer surface of the mounting rod (3); a heater (302) being installed in a side of the baffle (301) away from the welding box (1); a ventilation plate (303) being fixedly connected to a side of the baffle (301) away from the welding box (1); and the ventilation plate (303) being located outside the rectangular groove (307); The cooling mechanism comprises an air collecting hood (4), the air collecting hood (4) being fixedly connected to a side of the welding box (1) away from the suction cup (103), an exhaust pipe (401) being fixedly connected to the side of the air collecting hood (4) away from the welding box (1), an air outlet of the vacuum pump (104) being connected to an air inlet of the exhaust pipe (401), and one end of the exhaust pipe (401) being threadedly connected to a bellows (402) via a nut.

2. A stainless steel welding device for chemical industry according to claim 1, characterized in that: The inner wall of the cleaning box (202) is equidistantly rotatably connected to a plurality of transmission rods (207), the outer surfaces of the plurality of transmission rods (207) are fixedly connected to gears (2071), and one end of the plurality of transmission rods (207) away from the gears (2071) is fixedly connected to a stainless steel brush (2072).

3. A stainless steel welding device for chemical industry according to claim 2, characterized in that: The outer surfaces of the plurality of reciprocating screws (206) are threadedly connected to nuts (2073), the tops of the nuts (2073) are slidably connected to the inside of a slide groove provided on the inner surface of the cleaning box (202), the sides of the nuts (2073) away from the cleaning box (202) are fixedly connected to racks (2074), and the gears (2071) are meshed with the racks (2074).

4. A stainless steel welding device for chemical industry according to claim 3, characterized in that: A torsion spring (304) is fixedly connected between the baffle (301) and the rectangular groove (307) on the welding box (1), and the torsion spring (304) is sleeved on the outer surface of the mounting rod (3).

5. A stainless steel welding device for chemical industry according to claim 4, characterized in that: An extrusion rod (305) is fixedly connected to the outer surface of a nut (2073) close to the baffle (301), and a plurality of protrusions (306) are fixedly connected to one side of the baffle (301) close to the extrusion rod (305) at equal intervals, wherein the plurality of protrusions (306) are located on the movement trajectory of the extrusion rod (305).

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