Automatic welding machine for spiral-plate heat exchanger

Abstract

The invention relates to the technical field of spiral plate heat exchangers, and discloses a spiral plate heat exchanger automatic welding machine which comprises a rotating base, the top of the rotating base is fixedly connected with a first spring telescopic frame, and the other end of the first spring telescopic frame is fixedly connected with a mounting block. The heat exchanger shell is driven by the rotating base to rotate, in the process, materials in the material bearing box fall downwards into a gap through the discharging pipe and are finally stored in the mounting plate, and finally through welding of the welding gun, scaling powder particles located at the top of the heat exchanger shell are prevented from falling into the gap in the rotating process of the heat exchanger shell; in addition, through the application of a plurality of L-shaped striker plates and balls, when the limiting mechanism faces heat exchanger shells of different specifications, the plurality of L-shaped striker plates can adapt to different shell radians, and the welding efficiency of equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of spiral plate heat exchanger equipment, in particular to an automatic welding machine for a spiral plate heat exchanger. Background Art

[0002] Spiral heat exchanger is a kind of high-efficiency exchange equipment, which is widely used in various industrial sectors and is an energy-saving product promoted by the country. In the production of spiral heat exchangers, the welding workload is very heavy and accounts for more than half of the total product workload. At present, most domestic enterprises producing this product adopt manual welding or machine welding to produce it. Among them, the machine welding that can weld the arc outer wall with large volume is mostly automatic submerged arc welding.

[0003] Among them, automatic submerged arc welding is a common arc welding process. During welding, a sufficient amount of flux is spread on the welding surface, and the flux is mostly in granular form. When it is spread on the curved outer wall of the heat exchanger, the granular flux may roll away from the processing area, and the welding head extends into the flux pile to move. The moving welding head will push the flux to spread around, reducing the thermal insulation effect. In view of the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an automatic welding machine for a spiral plate heat exchanger, comprising a rotating base, a spring telescopic frame 1 is fixedly connected to the top of the rotating base, a mounting block is fixedly connected to one end of the spring telescopic frame 1 away from the rotating base, a frame is fixedly connected to the bottom of the mounting block, and a fixed frame is fixedly connected to the top of the frame;

[0005] The welding mechanism includes a feed rack fixedly connected to the top of the fixed frame, an end of the feed rack away from the fixed frame is fixedly connected to a receiving box, the bottom of the receiving box is connected through a discharge pipe, a welding rack is fixedly connected to the side wall of the fixed frame, a welding gun is fixedly connected to the other end of the welding rack, and a discharge assembly is rotatably connected to the side wall of the welding gun;

[0006] The limiting mechanism includes a spring telescopic frame 2 fixedly connected to the bottom of the welding frame, the spring telescopic frame 2 is fixedly connected to a mounting plate at one end away from the welding frame, the side wall of the mounting plate is fixedly connected to a sliding frame, the side wall of the sliding frame is slidably connected to a plurality of L-shaped baffle plates, the bottom of the L-shaped baffle plate is rotatably connected to a ball bearing, the bottom of the L-shaped baffle plate is fixedly connected to a reset spring 1, and the side wall of the sliding frame is rotatably connected to a recovery component. In view of the phenomenon that the flux is prone to scattering during the welding process, a welding mechanism and a limiting mechanism are arranged inside the equipment. Before use, the heat exchanger shell is placed on the top of the rotating base, as shown in the following figure. Figure 3The heat exchanger shell is driven to rotate by the rotating base. During this process, the material inside the material receiving box will fall down into the gap through the discharge pipe and finally be stored inside the mounting plate. Finally, it is welded by a welding gun. Through the application of the above components, the flux particles on the top of the heat exchanger shell are prevented from being scattered during the rotation of the heat exchanger shell, which affects the quality of welding.

[0007] Preferably, the discharge assembly includes a toothed roller rotatably connected to the side wall of the welding gun, a fixing plate is fixedly connected to the inner wall of the material box, a driving rod is rotatably connected to the inner wall of the through hole of the fixing plate, and a auger rod is fixedly connected to the bottom of the driving rod. Through the application of multiple L-shaped baffle plates and ball bearings, when the limiting mechanism faces heat exchanger shells of different specifications, the multiple L-shaped baffle plates can adapt to different shell curvatures, thereby ensuring that when the equipment faces heat exchanger shells of different specifications, the flux particles inside the mounting plate will not spread around due to vibration, thereby improving the welding efficiency of the equipment.

[0008] Preferably, the discharge assembly also includes a driving frame fixedly connected to the side wall of the driving rod, a rotating rod is fixedly connected to the top of the driving rod, a fixed block is fixedly connected to the side wall of the material receiving box, and a driving round rod is rotatably connected to the inner wall of the through hole of the fixed block. The rotating auger rod will transmit the flux inside the material receiving box, and the rotation speed of the auger rod is affected by the rolling speed of the toothed roller. Through the application of the above-mentioned components, it is ensured that the discharge speed of the discharge pipe deviates and affects the welding effect of the equipment.

[0009] Preferably, the discharging assembly also includes a driving column fixedly connected to the top of the driving round rod, a belt is sleeved on the outer wall of the driving column, and a bevel gear is fixedly connected to the end of the driving round rod away from the driving column. The characteristic of the above-mentioned rotating base driving the heat exchanger casing to rotate is utilized, and a discharging assembly is arranged inside the equipment. When the heat exchanger casing rotates, the toothed roller will rotate along the outer wall of the heat exchanger casing, and the rotating toothed roller will drive the top driving column to rotate through the driving round rod and the bevel gear. The driving column drives the two rotating rods to rotate synchronously through the belt. At this time, the rotating rod drives the bottom auger rod and the driving frame to rotate through the corresponding driving rod, and the rotating driving frame will stir the flux inside the material receiving box to avoid accumulation of granular flux and difficulty in unloading.

[0010] Preferably, the recovery component includes an arc-shaped plate rotatably connected to the side wall of the sliding frame, the top of the arc-shaped plate is connected to a collection box, the top of the collection box is connected to a transmission pipe, and a fixed bracket is fixedly connected to the side wall of the material receiving box.

[0011] Preferably, the recycling component also includes a motor fixedly connected to the top of the fixed bracket, the output shaft of the motor is fixedly connected to the rotating box, the side wall of the rotating box is fixedly connected to the fan blade, the top of the fixed bracket is through-connected with the transmission pipe 2, the end of the transmission pipe 2 away from the fixed bracket is fixedly connected to the inner wall of the through hole of the fixed plate, and the inner wall of the rotating box is fixedly connected to the cleaning component. In order to solve the problem that some flux still remains at the welding position after the equipment completes welding, a recycling component is arranged inside the equipment. As the heat exchanger shell rotates, the welded part will pass through the arc plate. In this process, the motor The fan blades are driven to rotate by the rotating box, forcing the fixed bracket to generate an upward suction force, which acts on the bottom of the arc plate through the transmission tube 1 and extracts the loose flux at the bottom of the arc plate. The flux passes through the transmission tube 1 and the fixed bracket and is finally returned to the inside of the material receiving box through the transmission tube 2, thereby realizing the self-recycling of the material. In addition, a spring is provided at the connection position between the arc plate and the sliding frame, which will force the other end of the arc plate to be tightly attached to the outer wall of the heat exchanger shell, thereby ensuring that when the equipment faces heat exchanger shells of different specifications, the arc plate can be tightly attached to the position of the welding gap.

[0012] Preferably, the cleaning component also includes a counterweight block slidably connected to the outer wall of the fan blade, a gear rod is fixedly connected to the side wall of the counterweight block, a gear column is rotatably connected to the inner wall of the rotating box, a return spring 2 is fixedly connected to the top of the gear column, and the side wall of the gear rod is meshingly connected with the side wall of the gear column. The characteristic of the above-mentioned rotating box driving the fan blade to rotate for flux recovery is utilized, and a cleaning component is arranged inside the equipment. When the fan blade rotates, the centrifugal force generated by the fan blade will force the counterweight block to move outward along the outer wall of the fan blade. At the same time, multiple counterweight blocks drive the gear column to rotate through the corresponding gear rod, wherein the rotation angle of the gear column indirectly controls the outward movement length of the multiple counterweight blocks. Through the application of the above-mentioned components, the outward-moving counterweight block will scratch and clean the outer wall of the fan blade to prevent the heat-softened flux from contacting the outer wall of the fan blade during transmission, causing the flux to stick to the outer wall of the fan blade and affecting the recovery efficiency of the equipment.

[0013] Preferably, the end of the return spring away from the L-shaped material baffle is fixedly connected to the outer wall of the sliding frame, the outer wall of the bevel gear is meshed with the outer wall of the toothed roller, and the outer wall of the belt is rotatably connected to the outer wall of the rotating rod. When the fan blades rotate, the tooth column will control the outward extension length of multiple counterweights to ensure the center of gravity of the rotation of the fan blades. When heat-softened particles are stuck to the outer wall of one of the fan blades, the corresponding counterweight will be unable to move. At this time, the outward movement force of the remaining counterweights will be transmitted to the tooth column through the tooth rod, and the tooth column will push the obstructed tooth rod and the counterweights to move outward, preventing the heat-softened particles from affecting the cleaning effect of the counterweights.

[0014] The present invention has the following beneficial effects:

[0015] (1) In view of the problem that the flux is easily scattered during the welding process, the present invention provides a welding mechanism and a limiting mechanism inside the device. Before use, the heat exchanger shell is placed on the top of the rotating base, presenting a Figure 3 In this process, the material in the material receiving box will fall down into the gap through the discharge pipe and finally be stored in the mounting plate and finally welded by the welding gun. Through the application of the above components, the flux particles on the top of the heat exchanger shell are prevented from being scattered during the rotation of the heat exchanger shell, thereby affecting the welding quality. In addition, through the application of multiple L-shaped baffle plates and ball bearings, when the limiting mechanism faces heat exchanger shells of different specifications, the multiple L-shaped baffle plates can adapt to different shell curvatures, thereby ensuring that when the equipment faces heat exchanger shells of different specifications, the flux particles inside the mounting plate will not spread around due to vibration, thereby improving the welding efficiency of the equipment.

[0016] (2) The present invention utilizes the characteristic that the rotating base drives the heat exchanger shell to rotate, and a discharge assembly is arranged inside the equipment. When the heat exchanger shell rotates, the toothed roller rotates along the outer wall of the heat exchanger shell, and the rotating toothed roller drives the top driving column to rotate through the driving round rod and the bevel gear. The driving column drives the two rotating rods to rotate synchronously through the belt. At this time, the rotating rod drives the bottom auger rod and the driving frame to rotate through the corresponding driving rod, and the rotating driving frame stirs the flux inside the receiving box to avoid the accumulation of granular flux and the difficulty of unloading. In addition, the rotating auger rod transmits the flux inside the receiving box, and the rotation speed of the auger rod is affected by the rolling speed of the toothed roller. Through the application of the above-mentioned components, it is ensured that the unloading speed of the discharge pipe deviates and affects the welding effect of the equipment.

[0017] (3) In order to solve the problem that some flux still remains at the welding position after the equipment completes welding, the present invention provides a recovery component inside the equipment. As the heat exchanger shell rotates, the welded part will pass through the arc plate. During this process, the motor drives the fan blades to rotate through the rotating box, forcing the fixed bracket to generate an upward suction force. The suction force acts on the bottom of the arc plate through the transmission tube 1 and extracts the loose flux at the bottom of the arc plate. The flux passes through the transmission tube 1 and the fixed bracket and is finally returned to the inside of the material receiving box through the transmission tube 2, thereby realizing self-recycling of the material. In addition, a spring is provided at the connection position between the arc plate and the sliding frame. The spring will force the other end of the arc plate to be tightly attached to the outer wall of the heat exchanger shell, thereby ensuring that when the equipment faces heat exchanger shells of different specifications, the arc plate can be tightly attached to the position of the welding gap.

[0018] (4) The present invention utilizes the characteristic of the above-mentioned rotating box to drive the fan blades to rotate for flux recovery, and a cleaning component is arranged inside the equipment. When the fan blades rotate, the centrifugal force generated by the fan blades will force the counterweight blocks to move outward along the outer wall of the fan blades. At the same time, multiple counterweight blocks drive the tooth column to rotate through the corresponding tooth rods, wherein the rotation angle of the tooth column indirectly controls the outward movement length of multiple counterweight blocks. Through the application of the above-mentioned components, the outward-moving counterweight blocks will scrape and clean the outer wall of the fan blade, thereby preventing the heat-softened flux from being transferred during the transmission process. In the process, the fan blade contacts the outer wall, causing the flux to stick to the outer wall of the fan blade, affecting the recycling efficiency of the equipment. In addition, when the fan blade is rotated, the tooth column will control the outward extension length of multiple counterweights to ensure the center of gravity of the fan blade rotation. When heat-softened particles are stuck to the outer wall of one of the fan blades, the corresponding counterweight will be unable to move. At this time, the outward movement force of the remaining counterweights will be transmitted to the tooth column through the tooth rod, and the tooth column will push the obstructed tooth rod and the counterweight outward to prevent the heat-softened particles from affecting the cleaning effect of the counterweight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic cross-sectional view of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the working state of the device of the present invention;

[0023] Figure 4 It is a cross-sectional schematic diagram of the welding mechanism of the present invention;

[0024] Figure 5 For the present invention Figure 4 A is an enlarged schematic diagram;

[0025] Figure 6 It is a cross-sectional schematic diagram of the discharging assembly of the present invention;

[0026] Figure 7 It is a cross-sectional schematic diagram of the recycling assembly of the present invention;

[0027] Figure 8 For the present invention Figure 7 A magnified schematic diagram of B;

[0028] Fig. 9 It is a schematic cross-sectional view of the cleaning component of the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] In the figure: 1. rotating base; 11. spring telescopic frame 1; 12. mounting block; 13. frame; 14. fixed frame; 2. welding mechanism; 21. feeding frame; 22. receiving box; 23. discharging pipe; 24. welding frame; 25. welding gun; 3. limiting mechanism; 31. spring telescopic frame 2; 32. mounting plate; 33. sliding frame; 34. L-shaped baffle plate; 35. ball bearing; 36. reset spring 1; 4. discharging assembly; 41. toothed roller; 42. fixed plate; 43. Driving rod; 44, auger rod; 45, driving frame; 46, rotating rod; 47, fixed block; 48, driving column; 49, belt; 410, driving round rod; 411, bevel gear; 5, recovery component; 51, arc plate; 52, collection box; 53, transmission tube one; 54, fixed bracket; 55, motor; 56, rotating box; 57, fan blade; 58, transmission tube two; 6, cleaning component; 61, counterweight block; 62, gear rod; 63, gear column; 64, reset spring two. DETAILED DESCRIPTION

[0031] 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.

[0032] For example, see Figure 1 - Figure 5 The present invention is an automatic welding machine for a spiral plate heat exchanger, comprising a rotating base 1, a spring telescopic frame 11 is fixedly connected to the top of the rotating base 1, a mounting block 12 is fixedly connected to one end of the spring telescopic frame 11 away from the rotating base 1, a frame 13 is fixedly connected to the bottom of the mounting block 12, and a fixing frame 14 is fixedly connected to the top of the frame 13;

[0033] The welding mechanism 2 includes a feed frame 21 fixedly connected to the top of the fixed frame 14, an end of the feed frame 21 away from the fixed frame 14 is fixedly connected to a receiving box 22, the bottom of the receiving box 22 is connected through a discharge pipe 23, a welding frame 24 is fixedly connected to the side wall of the fixed frame 14, a welding gun 25 is fixedly connected to the other end of the welding frame 24, and a discharge assembly 4 is rotatably connected to the side wall of the welding gun 25;

[0034] The limiting mechanism 3 includes a spring telescopic frame 21 fixedly connected to the bottom of the welding frame 24, and a mounting plate 32 is fixedly connected to one end of the spring telescopic frame 21 away from the welding frame 24. A sliding frame 33 is fixedly connected to the side wall of the mounting plate 32, and a plurality of L-shaped baffle plates 34 are slidably connected to the side wall of the sliding frame 33. A ball 35 is rotatably connected to the bottom of the L-shaped baffle plate 34, and a return spring 36 is fixedly connected to the bottom of the L-shaped baffle plate 34. A recovery component 5 is rotatably connected to the side wall of the sliding frame 33. In view of the phenomenon that the flux is prone to scattering during the welding process, a welding mechanism 2 and a limiting mechanism 3 are arranged inside the equipment. Before use, the heat exchanger housing is placed on the top of the rotating base 1, and it is presented as follows Figure 3 The heat exchanger shell is driven to rotate by the rotating base 1. During this process, the material in the material receiving box 22 will fall downward into the gap through the discharge pipe 23, and will eventually be stored in the mounting plate 32, and finally welded by the welding gun 25. Through the application of the above-mentioned components, the flux particles on the top of the heat exchanger shell are prevented from being scattered during the rotation of the heat exchanger shell, thereby affecting the quality of welding.

[0035] For example 2, please refer to Figure 6 - Fig. 9 The present invention is an automatic welding machine for a spiral plate heat exchanger. On the basis of the first embodiment, the discharging assembly 4 includes a toothed roller 41 rotatably connected to the side wall of the welding gun 25, a fixing plate 42 is fixedly connected to the inner wall of the material box 22, a driving rod 43 is rotatably connected to the inner wall of the through hole of the fixing plate 42, and a auger rod 44 is fixedly connected to the bottom of the driving rod 43. Through the application of multiple L-shaped baffle plates 34 and balls 35, when the limiting mechanism 3 faces heat exchanger shells of different specifications, the multiple L-shaped baffle plates 34 can adapt to different shell curvatures, thereby ensuring that when the equipment faces heat exchanger shells of different specifications, the flux particles inside the mounting plate 32 will not spread to the surroundings due to vibration, thereby improving the welding efficiency of the equipment.

[0036] The discharge assembly 4 also includes a drive frame 45 fixedly connected to the side wall of the drive rod 43, a rotating rod 46 is fixedly connected to the top of the drive rod 43, a fixed block 47 is fixedly connected to the side wall of the material receiving box 22, and a driving round rod 410 is rotatably connected to the inner wall of the through hole of the fixed block 47. The rotating auger rod 44 will transmit the flux inside the material receiving box 22, and the rotation speed of the auger rod 44 is affected by the rolling speed of the toothed roller 41. Through the application of the above-mentioned components, it is ensured that the unloading speed of the discharge pipe 23 deviates, which affects the welding effect of the equipment.

[0037] The discharging assembly 4 also includes a driving column 48 fixedly connected to the top of the driving rod 410, a belt 49 is sleeved on the outer wall of the driving column 48, and the end of the driving rod 410 away from the driving column 48 is fixedly connected to a bevel gear 411. The discharging assembly 4 is arranged inside the equipment by utilizing the characteristic that the rotating base 1 drives the heat exchanger shell to rotate. When the heat exchanger shell rotates, the toothed roller 41 will rotate along the outer wall of the heat exchanger shell, and the rotating toothed roller 41 drives the top driving column 48 to rotate through the driving rod 410 and the bevel gear 411. The driving column 48 drives the two rotating rods 46 to rotate synchronously through the belt 49. At this time, the rotating rod 46 drives the bottom auger rod 44 and the driving frame 45 to rotate through the corresponding driving rod 43, and the rotating driving frame 45 will stir the flux inside the receiving box 22 to avoid the accumulation of granular flux and the difficulty of unloading.

[0038] The recovery assembly 5 includes an arc plate 51 rotatably connected to the side wall of the sliding frame 33, the top of the arc plate 51 is connected with a collection box 52, the top of the collection box 52 is connected with a transmission pipe 53, and a fixed bracket 54 is fixedly connected to the side wall of the material receiving box 22.

[0039] The recovery component 5 also includes a motor 55 fixedly connected to the top of the fixed bracket 54, the output shaft of the motor 55 is fixedly connected to the rotating box 56, the side wall of the rotating box 56 is fixedly connected to the fan blade 57, the top of the fixed bracket 54 is connected to the transmission pipe 2 58, the end of the transmission pipe 2 58 away from the fixed bracket 54 is fixedly connected to the inner wall of the through hole of the fixed plate 42, and the inner wall of the rotating box 56 is fixedly connected to the cleaning component 6. In order to solve the problem that some solder flux still remains at the welding position after the equipment completes welding, a recovery component 5 is arranged inside the equipment. As the heat exchanger shell rotates, the welded part will pass through the arc plate 51. In this process, the motor 55 passes through the arc plate 51. The fan blades 57 are driven to rotate by the rotating box 56, forcing the fixed bracket 54 to generate an upward suction force, which acts on the bottom of the arc plate 51 through the transmission tube 1 53, and extracts the loose flux at the bottom of the arc plate 51. The flux passes through the transmission tube 1 53 and the fixed bracket 54, and finally returns to the inside of the material receiving box 22 through the transmission tube 2 58, thereby realizing the self-recovery of the material. In addition, a spring is provided at the connection position between the arc plate 51 and the sliding frame 33, which will force the other end of the arc plate 51 to be tightly attached to the outer wall of the heat exchanger shell, thereby ensuring that when the equipment faces heat exchanger shells of different specifications, the arc plate 51 can be tightly attached to the position of the welding gap.

[0040] The cleaning assembly 6 also includes a counterweight 61 slidably connected to the outer wall of the fan blade 57, a gear rod 62 is fixedly connected to the side wall of the counterweight 61, a gear column 63 is rotatably connected to the inner wall of the rotating box 56, a reset spring 64 is fixedly connected to the top of the gear column 63, and the side wall of the gear rod 62 is meshed with the side wall of the gear column 63. The cleaning assembly 6 is arranged inside the device by utilizing the characteristics of the rotating box 56 driving the fan blade 57 to rotate for flux recovery. When the fan blade 57 rotates, the centrifugal force generated by the fan blade 57 will The counterweight blocks 61 are forced to move outward along the outer wall of the fan blade 57. At the same time, the multiple counterweight blocks 61 drive the tooth column 63 to rotate through the corresponding tooth rod 62, wherein the rotation angle of the tooth column 63 indirectly controls the outward movement length of the multiple counterweight blocks 61. Through the application of the above-mentioned components, the outward-moving counterweight blocks 61 will scrape and clean the outer wall of the fan blade 57, thereby preventing the heat-softened flux from contacting the outer wall of the fan blade 57 during the transmission process, causing the flux to stick to the outer wall of the fan blade 57 and affecting the recycling efficiency of the equipment.

[0041] One end of the return spring 36 away from the L-shaped baffle plate 34 is fixedly connected to the outer wall of the sliding frame 33, the outer wall of the bevel gear 411 is meshed and connected with the outer wall of the toothed roller 41, and the outer wall of the belt 49 is rotatably connected to the outer wall of the rotating rod 46. When the fan blade 57 is rotated, the tooth column 63 will control the outward extension length of multiple counterweights 61 to ensure the rotation center of gravity of the fan blade 57. At the same time, when heat-softened particles are stuck to the outer wall of one of the fan blades 57, the corresponding counterweight 61 will not be able to move. At this time, the outward movement force of the remaining counterweights 61 will be transmitted to the tooth column 63 through the tooth rod 62, and the tooth column 63 will push the obstructed tooth rod 62 and the counterweight 61 to move outward to prevent the heat-softened particles from affecting the cleaning effect of the counterweight 61.

[0042] A specific application of this embodiment is: before use, the heat exchanger housing is placed on the top of the rotating base 1, presenting the following Figure 3 In this process, the material in the material receiving box 22 will fall down into the gap through the discharge pipe 23, and finally be stored in the mounting plate 32, and finally be welded by the welding gun 25. Through the application of the above-mentioned components, it is possible to avoid the flux particles on the top of the heat exchanger shell from being scattered during the rotation of the heat exchanger shell, thereby affecting the welding quality. In addition, through the application of multiple L-shaped baffle plates 34 and ball bearings 35, when the limiting mechanism 3 faces heat exchanger shells of different specifications, the multiple L-shaped baffle plates 34 can adapt to different shell curvatures, thereby ensuring that when the equipment faces heat exchanger shells of different specifications, the flux particles inside the mounting plate 32 will not spread around due to vibration, thereby improving the welding efficiency of the equipment.

[0043] Taking advantage of the characteristic of the rotating base 1 driving the heat exchanger shell to rotate, a discharge component 4 is arranged inside the equipment. When the heat exchanger shell rotates, the toothed roller 41 will rotate along the outer wall of the heat exchanger shell, and the rotating toothed roller 41 drives the top driving column 48 to rotate through the driving round rod 410 and the bevel gear 411, and the driving column 48 drives the two rotating rods 46 to rotate synchronously through the belt 49. At this time, the rotating rod 46 drives the bottom auger rod 44 and the driving frame 45 to rotate through the corresponding driving rod 43, and the rotating driving frame 45 will stir the flux inside the receiving box 22 to avoid the accumulation of granular flux and the difficulty of unloading. In addition, the rotating auger rod 44 will transmit the flux inside the receiving box 22, and the rotation speed of the auger rod 44 is affected by the rolling speed of the toothed roller 41. Through the application of the above components, it is ensured that the unloading speed of the discharge pipe 23 deviates, affecting the welding effect of the equipment.

[0044] In order to solve the problem that some flux still remains at the welding position after the equipment completes welding, a recovery component 5 is arranged inside the equipment. As the heat exchanger shell rotates, the welded part will pass through the arc plate 51. During this process, the motor 55 drives the fan blade 57 to rotate through the rotating box 56, forcing the fixed bracket 54 to generate an upward suction force. The suction force acts on the bottom of the arc plate 51 through the transmission tube 1 53, and extracts the loose flux at the bottom of the arc plate 51. The flux passes through the transmission tube 1 53 and The fixed bracket 54 is finally returned to the inside of the material receiving box 22 through the transmission pipe 58 to realize the self-recovery of the material; in addition, a spring is provided at the connection position between the arc plate 51 and the sliding frame 33, and the spring will force the other end of the arc plate 51 to be close to the outer wall of the heat exchanger shell, ensuring that when the equipment faces heat exchanger shells of different specifications, the arc plate 51 can be close to the position of the welding gap, and the above-mentioned rotating box 56 drives the fan blade 57 to rotate to recover the solder flux. A cleaning component 6 is provided inside the equipment, and the fan blade 57 During rotation, the centrifugal force generated by the fan blade 57 will force the counterweight 61 to move outward along the outer wall of the fan blade 57. At the same time, the multiple counterweights 61 drive the tooth column 63 to rotate through the corresponding tooth rod 62, wherein the rotation angle of the tooth column 63 indirectly controls the outward movement length of the multiple counterweights 61. Through the application of the above components, the outward moving counterweight 61 will scrape and clean the outer wall of the fan blade 57, preventing the heat-softened soldering flux from contacting the outer wall of the fan blade 57 during the transmission process, causing the soldering flux to stick to the outer wall of the fan blade 57, affecting In addition, when the fan blades 57 are rotated, the tooth column 63 will control the outward extension length of the plurality of counterweights 61 to ensure the rotation center of gravity of the fan blades 57. When heat-softened particles are adhered to the outer wall of one of the fan blades 57, the corresponding counterweight 61 will be unable to move. At this time, the outward movement force of the remaining counterweights 61 will be transmitted to the tooth column 63 through the tooth rod 62. The tooth column 63 will push the obstructed tooth rod 62 and the counterweight 61 outward to prevent the heat-softened particles from affecting the cleaning effect of the counterweight 61.

[0045] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic welding machine for a spiral plate heat exchanger, comprising a rotating base (1), the top of the rotating base (1) is fixedly connected to a spring telescopic frame (11), the end of the spring telescopic frame (11) away from the rotating base (1) is fixedly connected to a mounting block (12), the bottom of the mounting block (12) is fixedly connected to a frame (13), the top of the frame (13) is fixedly connected to a fixing frame (14), characterized in that: Also includes: A welding mechanism (2), the welding mechanism (2) comprising a feed frame (21) fixedly connected to the top of a fixed frame (14), the feed frame (21) having one end away from the fixed frame (14) fixedly connected to a receiving box (22), the bottom of the receiving box (22) being connected through a discharge pipe (23), a welding frame (24) fixedly connected to a side wall of the fixed frame (14), a welding gun (25) fixedly connected to the other end of the welding frame (24), and a discharge assembly (4) rotatably connected to the side wall of the welding gun (25); A limiting mechanism (3), the limiting mechanism (3) comprising a spring telescopic frame 2 (31) fixedly connected to the bottom of the welding frame (24), the spring telescopic frame 2 (31) being fixedly connected to a mounting plate (32) at one end away from the welding frame (24), the mounting plate (32) being fixedly connected to a sliding frame (33) at the side wall, the sliding frame (33) being slidably connected to a plurality of L-shaped baffle plates (34), the bottom of the L-shaped baffle plate (34) being rotatably connected to a ball bearing (35), the bottom of the L-shaped baffle plate (34) being fixedly connected to a reset spring 1 (36), and the side wall of the sliding frame (33) being rotatably connected to a recovery component (5).

2. The automatic welding machine for spiral plate heat exchanger according to claim 1, characterized in that: The material discharging assembly (4) comprises a toothed roller (41) rotatably connected to the side wall of the welding gun (25); a fixing plate (42) is fixedly connected to the inner wall of the material receiving box (22); a driving rod (43) is rotatably connected to the inner wall of the through hole of the fixing plate (42); and a auger rod (44) is fixedly connected to the bottom of the driving rod (43).

3. The automatic welding machine for spiral plate heat exchanger according to claim 2, characterized in that: The discharging assembly (4) further comprises a driving frame (45) fixedly connected to the side wall of the driving rod (43); a rotating rod (46) is fixedly connected to the top of the driving rod (43); a fixing block (47) is fixedly connected to the side wall of the material receiving box (22); and a driving round rod (410) is rotatably connected to the inner wall of the through hole of the fixing block (47).

4. The automatic welding machine for spiral plate heat exchanger according to claim 3, characterized in that: The discharging assembly (4) further comprises a driving column (48) fixedly connected to the top of the driving rod (410), a belt (49) being sleeved on the outer wall of the driving column (48), and a bevel gear (411) being fixedly connected to one end of the driving rod (410) away from the driving column (48).

5. The automatic welding machine for spiral plate heat exchanger according to claim 4, characterized in that: The recovery assembly (5) comprises an arc-shaped plate (51) rotatably connected to the side wall of the sliding frame (33); the top of the arc-shaped plate (51) is connected to a collecting box (52); the top of the collecting box (52) is connected to a transmission pipe (53); and a fixed bracket (54) is fixedly connected to the side wall of the material receiving box (22).

6. The automatic welding machine for spiral plate heat exchanger according to claim 5, characterized in that: The recovery component (5) further comprises a motor (55) fixedly connected to the top of the fixed bracket (54); the output shaft of the motor (55) is fixedly connected to a rotating box (56); a fan blade (57) is fixedly connected to the side wall of the rotating box (56); a transmission pipe 2 (58) is connected through the top of the fixed bracket (54); an end of the transmission pipe 2 (58) away from the fixed bracket (54) is fixedly connected to the inner wall of the through hole of the fixed plate (42); and a cleaning component (6) is fixedly connected to the inner wall of the rotating box (56).

7. The automatic welding machine for spiral plate heat exchanger according to claim 6, characterized in that: The cleaning assembly (6) further comprises a counterweight (61) slidably connected to the outer wall of the fan blade (57); a gear rod (62) is fixedly connected to the side wall of the counterweight (61); a gear column (63) is rotatably connected to the inner wall of the rotating box (56); a second return spring (64) is fixedly connected to the top of the gear column (63); and the side wall of the gear rod (62) is meshingly connected to the side wall of the gear column (63).

8. The automatic welding machine for spiral plate heat exchanger according to claim 7, characterized in that: The end of the return spring (36) away from the L-shaped baffle plate (34) is fixedly connected to the outer wall of the sliding frame (33), the outer wall of the bevel gear (411) is meshedly connected to the outer wall of the toothed roller (41), and the outer wall of the belt (49) is rotatably connected to the outer wall of the rotating rod (46).

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