Manufacturing method of spiral plate heat exchanger

Abstract

The present invention discloses a method for manufacturing a spiral plate heat exchanger, comprising: selecting a first width region in the middle area of ​​a steel plate, and determining installation points on the plate surface area outside the first width region; welding a distance column at each of the installation points using a stud welding gun; and applying torque to the first width region using a plate rolling machine to form a spiral flow channel structure, wherein the spiral portion of the spiral flow channel structure has a material spiral flow channel and a medium spiral flow channel, and the center region of the spiral flow channel structure has a material flow channel and a medium flow channel. The present invention selects the first width region in the middle area of ​​the steel plate, so that the steel plate portion corresponding to the first width region and the center region of the spiral flow channel structure are integrally formed. After such an arrangement, it is possible to avoid implementing a welding process in the center region of the spiral flow channel structure, thereby improving the integrity of the center region of the spiral flow channel structure and avoiding leakage in the center region of the spiral flow channel structure.

Description

Technical Field

[0001] The present invention relates to the technical field of spiral plate heat exchangers, and in particular to a method for manufacturing a spiral plate heat exchanger. Background Art

[0002] The spiral plate heat exchanger usually includes a spiral flow channel structure. In the prior art, the production process of the spiral flow channel structure is as follows:

[0003] S1. After selecting an isolation area at one end of the steel plate in the longitudinal direction, the steel plate is bent for the first time so that the steel plate forms an isolation area segment and a section to be wound. At this time, the section to be wound and the isolation area segment are perpendicular to each other.

[0004] S2. Use a plate rolling machine to apply torque to the isolated area segment so that the isolated area segment drives the steel plate to rotate. When all the steel plates are rolled, a spiral flow channel structure is formed.

[0005] S3. Fixing the side of the isolation area away from the bending portion to the inner side wall of the central area of ​​the spiral flow channel structure by welding.

[0006] In the production process of the above-mentioned spiral flow channel structure, the side of the isolation area segment away from its bending part is fixedly connected to the inner wall of the center area of ​​the spiral flow channel structure by welding. The welding area reduces the integrity between the isolation area segment and the center area of ​​the spiral flow channel structure. After long-term use, there is a risk of leakage. Summary of the Invention

[0007] The purpose of the present invention is to provide a method for manufacturing a spiral plate heat exchanger, which can avoid implementing a welding process in the center area of ​​the spiral flow channel structure, improve the integrity of the center area of ​​the spiral flow channel structure, and avoid leakage in the center area of ​​the spiral flow channel structure.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A method for manufacturing a spiral plate heat exchanger, comprising:

[0010] A first width region is selected in the middle region of the steel plate, the plate surface region on one side of the first width region is the first to-be-wound region, and the plate surface region on the other side of the first width region is the second to-be-wound region;

[0011] Determine a first mounting point on the first to-be-wound area and on the front surface of the steel plate, wherein a plurality of first mounting points are distributed in a lattice pattern;

[0012] Welding a distance column at each of the first mounting points using a stud welding gun;

[0013] Determine a second mounting point on the second to-be-wound area and on the reverse side of the steel plate, wherein a plurality of the second mounting points are distributed in a matrix;

[0014] Welding a distance column at each of the second mounting points using a stud welding gun;

[0015] A plate rolling machine is used to apply torque to the first width area, so that the first to-be-wound area and the second to-be-wound area are spirally wound outside the first width area to form a spiral flow channel structure, wherein the spiral portion of the spiral flow channel structure has a material spiral flow channel and a medium spiral flow channel, and the center area of ​​the spiral flow channel structure has a material flow channel and a medium flow channel, the material flow channel is communicated with the material spiral flow channel, and the medium flow channel is communicated with the medium spiral flow channel;

[0016] The end of the first to-be-wound area is bent to form a first discharge channel; the end of the second to-be-wound area is bent to form a first feed channel;

[0017] The spiral flow channel structure is mounted on a rotating mechanism, and the sealing fillers are fixed in the openings of the material spiral flow channel and the medium spiral flow channel by using the rotating mechanism;

[0018] A first sealing plate is fixed at the openings at both ends of the material flow channel, and a second sealing plate is fixed at the openings at both ends of the medium flow channel;

[0019] A first inlet is fixed on any of the first sealing plates, a first outlet is fixed on any of the second sealing plates, a second outlet is connected to the first discharge channel, and a second inlet is connected to the first feed channel.

[0020] Preferably, the rotating mechanism includes a rotating platform, a support frame, a driving member, and a first transmission assembly. The rotating platform is rotatably connected to the support frame, the first transmission assembly is connected between the rotating platform and the driving member, and the driving member drives the rotating platform to rotate through the first transmission assembly.

[0021] Preferably, the rotating mechanism also includes a positioning component, which is arranged on the rotating platform. The positioning component is circumferentially provided with at least three groups with the rotation center of the rotating platform as the center of symmetry. The rotating platform is provided with a sliding groove, and the sliding groove is circumferentially provided with at least multiple groups with the rotation center of the rotating platform as the center of symmetry. The sliding grooves correspond one-to-one to the positioning components, and multiple groups of positioning components can shrink or expand toward the rotation center of the rotating platform. The spiral flow channel structure is located between multiple positioning components, and the spiral flow channel structure is clamped by multiple groups of positioning components.

[0022] Preferably, the positioning assembly includes an outer clamping block, a driving screw, a driving sleeve and a second transmission assembly, the bottom of the outer clamping block slides in the sliding groove, and a rotating hole is provided on the groove wall of the sliding groove away from the rotation center of the rotating platform, the rotating hole passes through the outer wall of the rotating platform, one end of the driving screw is rotatably connected to the outer clamping block, and the other end passes through the rotating hole and then passes through the outer wall of the rotating platform, the driving sleeve is rotatably connected to the outer wall of the rotating platform, and the rod body of the driving screw passing through the outer wall of the rotating platform passes through the driving sleeve, and the driving screw is threadedly engaged with the inner wall of the driving sleeve, the second transmission assembly is provided on the driving sleeve, and the rotating mechanism also includes a linkage assembly, which is used to drive each second transmission assembly to drive the driving sleeve to rotate simultaneously and in the same direction.

[0023] Preferably, the rotating mechanism also includes a smoke and dust removal device, which includes a suction nozzle, a smoke and dust removal duct, a fan, and a smoke and dust exhaust duct. The smoke and dust removal duct is connected to the air inlet of the fan, the smoke and dust exhaust duct is connected to the air outlet of the fan, the suction nozzle is connected to the end of the smoke and dust removal duct away from the fan, and the suction nozzle is located above the rotating platform.

[0024] Preferably, the first transmission assembly is at least one of the following: a gear set transmission assembly, a sprocket transmission assembly, and a pulley transmission assembly.

[0025] Preferably, the second transmission assembly is a bevel gear set transmission assembly.

[0026] Compared with the existing technology, the above technical solution has the following beneficial technical effects:

[0027] 1. By selecting the first width area in the middle area of ​​the steel plate, the steel plate portion corresponding to the first width area is integrally formed with the center of the spiral flow channel structure. After this arrangement, it is possible to avoid implementing a welding process in the center area of ​​the spiral flow channel structure, thereby improving the integrity of the center area of ​​the spiral flow channel structure and avoiding leakage in the center area of ​​the spiral flow channel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without paying any creative work.

[0029] Figure 1 It is a structural diagram of the steel plate.

[0030] Figure 2 It is a structural diagram of the steel plate.

[0031] Figure 3 It is a structural diagram of the steel plate.

[0032] Figure 4 It is a top view showing the spiral flow channel structure.

[0033] Figure 5 It is a side view showing the spiral flow channel structure.

[0034] Figure 6 It is a structural diagram reflecting the rotating mechanism.

[0035] Figure 7 It is a structural diagram reflecting the rotating platform.

[0036] Figure 8 It is a structural diagram of a smoke dust removal device.

[0037] Explanation of reference numerals: 1. steel plate; 101. first width region; 102. first region to be wound; 103. second region to be wound; 104. first auxiliary line; 105. second auxiliary line; 106. third auxiliary line; 107. fourth auxiliary line; 108. fifth auxiliary line; 109. distance column; 110. sixth auxiliary line; 111. seventh auxiliary line; 112. eighth auxiliary line; 113. bending region; 2. spiral flow channel structure; 201. material spiral flow channel; 202. medium spiral flow channel; 203. material flow channel; 204. medium flow channel; 205. first discharge channel; 206. first feed channel; 207. first inlet; 208. First outlet; 209, second outlet; 210, second inlet; 3, rotating mechanism; 301, rotating platform; 3011, sliding groove; 302, supporting frame; 303, driving member; 304, first transmission assembly; 3041, driving bevel gear; 3042, driven bevel gear; 305, outer clamping block; 306, driving screw; 307, driving sleeve; 308, second transmission assembly; 3081, first bevel gear; 3082, second bevel gear; 309, third transmission assembly; 3091, chain; 3092, sprocket; 310, smoke exhaust device; 3101, suction nozzle; 3102, smoke exhaust duct; 3103, fan; 3104, smoke exhaust duct. DETAILED DESCRIPTION

[0038] The present invention discloses a method for manufacturing a spiral plate heat exchanger, which can avoid implementing a welding process in the center area of ​​the spiral flow channel structure, improve the integrity of the center area of ​​the spiral flow channel structure, and avoid leakage in the center area of ​​the spiral flow channel structure.

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0040] See Figures 1-8 The manufacturing method of the spiral plate heat exchanger of the present invention comprises:

[0041] S101. Select a first width region 101 in the middle area of ​​the steel plate 1, the plate surface region on one side of the first width region 101 is a first to-be-wound region 102, and the plate surface region on the other side of the first width region 101 is a second to-be-wound region 103.

[0042] See Figure 1 and Figure 2 In this step, the first width region 101 is selected as follows: a first auxiliary line 104 is drawn at the midline of the length direction of the steel plate 1, and a second auxiliary line 105 and a third auxiliary line 106 are drawn on either side of the first auxiliary line 104. The distance between the second auxiliary line 105 and the first auxiliary line 104 is equal to the distance between the third auxiliary line 106 and the first auxiliary line 104. In this case, the area between the second auxiliary line 105 and the third auxiliary line 106 is the first width region 101. It should be noted that the distance between the second auxiliary line 105 and the third auxiliary line 106 is determined according to actual needs and is not specifically limited here.

[0043] S102, determining a first installation point on the first to-be-wound area 102 and on the front side of the steel plate 1, wherein a plurality of first installation points are distributed in a lattice shape.

[0044] See Figure 1In this step, the process of determining the first installation point is as follows: on the first to-be-wound area 102 and on the front surface of the steel plate 1, draw a fourth auxiliary line 107 and a fifth auxiliary line 108. The fourth auxiliary line 107 is parallel to the longitudinal direction of the steel plate 1, and the fifth auxiliary line 108 is perpendicular to the fourth auxiliary line 107. Several fourth auxiliary lines 107 are arranged at equal intervals along the width direction of the steel plate 1, and several fifth auxiliary lines 108 are arranged along the longitudinal direction of the steel plate 1. The intersection of the fourth auxiliary line 107 and the fifth auxiliary line 108 is selected as the installation point, or the grid formed by the fourth auxiliary line 107 and the fifth auxiliary line 108 is selected as the installation point. It should be noted that not all intersections or grids need to be selected as installation points. The staff can determine them based on actual needs and no specific restrictions are set here. In addition, the spacing between two adjacent fourth auxiliary lines 107 and the spacing between two adjacent fifth auxiliary lines 108 are determined based on actual needs and no specific restrictions are set here.

[0045] S103 , using a stud welding gun to weld the distance column 109 at each first installation point.

[0046] See Figure 1 In this step, the use of a stud welding gun can prevent the welding temperature from breaking through the steel plate 1, reducing the possibility of the steel plate 1 being scrapped.

[0047] S104, determining a second installation point on the second to-be-wound area 103 and on the reverse side of the steel plate 1, wherein a plurality of second installation points are distributed in a lattice shape.

[0048] See Figure 2 In this step, the process of determining the second installation point is as follows: on the second to-be-wound area 103 and on the reverse side of the steel plate 1, a sixth auxiliary line 110 and a seventh auxiliary line 111 are drawn. The sixth auxiliary line 110 is parallel to the longitudinal direction of the steel plate 1, and the seventh auxiliary line 111 is perpendicular to the sixth auxiliary line 110. Several sixth auxiliary lines 110 are arranged at equal intervals along the width direction of the steel plate 1, and several seventh auxiliary lines 111 are arranged along the longitudinal direction of the steel plate 1. The intersection of the sixth auxiliary line 110 and the seventh auxiliary line 111 is selected as the installation point, or the grid formed by the sixth auxiliary line 110 and the seventh auxiliary line 111 is selected as the installation point. It should be noted that not all intersections or grids need to be selected as installation points. The staff can determine them based on actual needs and no specific restrictions are set here. In addition, the spacing between two adjacent sixth auxiliary lines 110 and the spacing between two adjacent seventh auxiliary lines 111 are determined based on actual needs and no specific restrictions are set here.

[0049] It should be noted that the front and back sides of the steel plate 1 in the above steps S102 and 103 are only for reflecting the two different surfaces of the steel plate 1. The positional relationship indicated by the front and back sides is only for the convenience of description, and does not indicate or imply that the steel plate 1 must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0050] S105 , using a stud welding gun to weld the distance column 109 at each second installation point.

[0051] See Figure 2 In this step, the use of a stud welding gun can prevent the welding temperature from breaking through the steel plate 1, reducing the possibility of the steel plate 1 being scrapped.

[0052] S106. Use a plate rolling machine to apply torque to the first width area 101, so that the first area to be wound 102 and the second area to be wound 103 are spirally wound outside the first width area 101 to form a spiral flow channel structure 2, wherein the spiral part of the spiral flow channel structure 2 has a material spiral flow channel 201 and a medium spiral flow channel 202, and the center area of ​​the spiral flow channel structure 2 has a material flow channel 203 and a medium flow channel 204, the material flow channel 203 is connected to the material spiral flow channel 201, and the medium flow channel 204 is connected to the medium spiral flow channel 202.

[0053] See Figure 1-Figure 5 In this step, the material flow channel 203 and the medium flow channel 204 are formed by the first width region 101 blocking the central region of the spiral flow channel structure 2. The material spiral flow channel 201 and the medium spiral flow channel 202 are concentric and spiral in the same direction. With this arrangement, in the spiral flow channel structure 2, the material can only flow through the material flow channel 203 and the material spiral flow channel 201, and the medium can only flow through the medium flow channel 204 and the medium spiral flow channel 202, due to the obstruction of the steel plate 1. This achieves heat exchange without contact between the material and the medium.

[0054] S107 , bend the end of the first to-be-wound area 102 to form a first discharge channel 205 ; bend the end of the second to-be-wound area 103 to form a first feed channel 206 .

[0055] See Figure 1-Figure 5In this step, the process of bending the end of the first to-be-wound area 102 is as follows: two eighth auxiliary lines 112 are drawn at the end of the first to-be-wound area 102, and the two eighth auxiliary lines 112 are mirror images of each other with respect to the center line in the width direction of the steel plate 1. One end of the eighth auxiliary line 112 is located on the long side of the steel plate 1, and the other end is located on the wide side of the steel plate 1. At this time, a right-angled triangle area is formed between the eighth auxiliary line 112 and the long side and wide side of the steel plate 1. The right-angled triangle area is the bending area 113, and the eighth auxiliary line 112 is the bending line. When bending, the staff bends the bending area 113 toward the outer wall of the spiral flow channel structure 2 so that the bending area 113 and the end of the first winding area 102 are perpendicular to each other, and the side of the bending area 113 that is collinear with the long side of the steel plate 1 is aligned with the outer wall of the spiral flow channel structure 2. Then, the staff welds the side of the bending area 113 that is collinear with the long side of the steel plate 1 to the outer wall of the spiral flow channel structure 2. When both bending areas 113 are welded to the outer wall of the spiral flow channel structure 2, the production of the first discharge channel 205 is completed. The production of the first feed channel 206 can be completed using the same production process as above.

[0056] S108 , installing the spiral flow channel structure 2 on the rotating mechanism 3 , and using the rotating mechanism 3 to fix sealing fillers (not shown in the figure) in the openings of the material spiral flow channel 201 and the medium spiral flow channel 202 .

[0057] In this step, one axial end face of the spiral flow channel structure 2 is fixed on the rotating platform 301 of the rotating mechanism 3. At the same time, a mobile platform is provided next to the rotating mechanism 3. The mobile plane includes a bracket and a mobile plane fixedly connected to the bracket. The bracket is placed on the ground. The mobile plane is higher than the highest point of the spiral flow channel structure 2 after the spiral flow channel structure 2 is installed on the rotating mechanism 3. The staff stands on the mobile plane to perform welding work.

[0058] The sealing packing includes a sealing strip and welding filler. The shape of the sealing strip matches the shape of the openings of the material spiral flow channel 201 and the medium spiral flow channel 202. During welding, the worker first places the sealing strip in the openings of the material spiral flow channel 201 and the medium spiral flow channel 202. The spiral flow channel structure 2 is driven by the rotating mechanism 3 to rotate. The worker stands in place and welds the sealing strip into the openings of the spiral material spiral flow channel 201 and the medium spiral flow channel 202. After the sealing strip is fixed, the spiral flow channel structure 2 continues to rotate under the drive of the rotating mechanism 3. The worker continues welding in the openings of the material spiral flow channel 201 and the medium spiral flow channel 202 to fill the welding filler, thereby securing the sealing filler in the openings of the material spiral flow channel 201 and the medium spiral flow channel 202.

[0059] S109 , respectively fixing first sealing plates (not shown in the figure) at the openings at both ends of the material flow channel 203 , and respectively fixing second sealing plates (not shown in the figure) at the openings at both ends of the medium flow channel 204 .

[0060] This step cooperates with step S108 to achieve overall sealing of the spiral flow channel structure 2 .

[0061] S110 , fixing the first inlet 207 on any first sealing plate, fixing the first outlet 208 on any second sealing plate, connecting the second outlet 209 to the first discharge channel 205 , and connecting the second inlet 210 to the first feed channel 206 .

[0062] See Figure 1-Figure 5 In this step, the second outlet 209 is fixedly connected to the opening of the first discharge channel 205, and the second inlet 210 is fixedly connected to the opening of the first feed channel 206. At the same time, the first inlet 207 is fixed on any first sealing plate, and the first outlet 208 is fixed on any second sealing plate. After this arrangement, the first inlet 207, the material flow channel 203, the material spiral flow channel 201, the first discharge channel 205, and the second outlet 209 are connected, and the second inlet 210, the first feed channel 206, the medium spiral flow channel 202, the medium flow channel 204, and the first outlet 208 are connected. The material enters from the first inlet 207 and flows out from the second outlet 209, and the medium enters from the second inlet 210 and flows out from the first outlet 208, thereby realizing heat exchange.

[0063] See Figure 6 and Figure 7 In this embodiment, the rotating mechanism 3 includes a rotating platform 301 , a support frame 302 , a driving member 303 , and a first transmission assembly 304 .

[0064] See Figure 6 and Figure 7 A rotating shaft is fixedly connected to the rotating platform 301. A rotating hole is provided on the support plane of the support frame 302. The rotating shaft passes through the rotating hole. A rotating bearing is provided on the outer wall of the rotating shaft. The rotating bearing is located in the rotating hole. The rotating platform 301 is rotatably connected to the support frame 302 through the rotating bearing between the rotating shaft and the rotating hole. A first transmission assembly 304 is connected between the rotating platform 301 and the driving member 303. The driving member 303 drives the rotating platform 301 to rotate through the first transmission assembly 304.

[0065] See Figure 6 and Figure 7, the first transmission component 304 is at least one of the following: a gear set transmission component, a sprocket transmission component, and a pulley transmission component. In this embodiment, the first transmission component 304 is taken as an example of a gear set transmission component. The first transmission component 304 includes a driving bevel gear 3041 and a driven bevel gear 3042. The driving member 303 (not shown in the figure) is a motor. The driving member 303 is fixedly connected to the support frame 302 through a bracket. The driving bevel gear 3041 is connected to the output shaft of the driving member 303, and the driven bevel gear 3042 is connected to the rotating shaft. The driving bevel gear 3041 is meshed with the driven bevel gear 3042. The driving member 303 drives the rotating platform 301 to rotate through the meshing relationship between the driving bevel gear 3041 and the driven bevel gear 3042.

[0066] See Figure 6 and Figure 7 In this embodiment, the rotating mechanism 3 also includes a positioning component, which is arranged on the rotating platform 301. The positioning component is circumferentially provided with at least three groups with the rotation center of the rotating platform 301 as the center of symmetry. The rotating platform 301 is provided with a sliding groove 3011. The sliding groove 3011 is circumferentially provided with at least multiple groups with the rotation center of the rotating platform 301 as the center of symmetry. The sliding grooves 3011 correspond one-to-one to the positioning components. Multiple groups of positioning components can shrink or expand toward the rotation center of the rotating platform 301. The spiral flow channel structure 2 is located between multiple positioning components, and the spiral flow channel structure 2 is clamped by multiple groups of positioning components.

[0067] See Figure 6 and Figure 7 In this embodiment, the positioning assembly includes an outer abutment block 305 , a drive screw 306 , a drive sleeve 307 and a second transmission assembly 308 .

[0068] See Figure 6 and Figure 7 A rotation hole is provided on the wall of the sliding groove 3011 away from the rotation center of the rotating platform 301. The rotation hole penetrates the outer wall of the rotating platform 301. The bottom of the outer abutting block 305 slides in the sliding groove 3011. The outer abutting block 305 is provided with a connecting hole. One end of the driving screw 306 is located in the connecting hole. The end of the driving screw 306 located in the connecting hole is provided with a bearing. The bearing is connected to the connecting hole. The driving rod is rotatably connected to the outer abutting block 305 via the bearing. The other end of the driving screw 306 passes through the rotation hole and then exits the outer wall of the rotating platform 301.

[0069] See Figure 6 and Figure 7A connecting groove is provided on the outer wall of the rotating platform 301. One end of the drive sleeve 307 is located in the connecting groove. A bearing is provided on the end of the drive sleeve 307 located within the connecting groove. The bearing is connected to the connecting groove. The drive sleeve 307 is rotatably connected to the outer wall of the rotating platform 301 via the bearing. The shaft portion of the drive screw 306 that extends through the outer wall of the rotating platform 301 passes through the drive sleeve 307. The inner wall of the drive sleeve 307 is provided with an internal thread, and the drive screw 306 and the inner wall of the drive sleeve 307 are threadedly engaged.

[0070] See Figure 6 and Figure 7 The second transmission assembly 308 is mounted on the drive sleeve 307 and comprises a bevel gear set. The second transmission assembly 308 includes a first bevel gear 3081 and a second bevel gear 3082. The first bevel gear 3081 is connected to the drive sleeve 307, and the second bevel gear 3082 meshes with the first bevel gear 3081. A drive shaft is fixedly connected to the second bevel gear 3082. A connecting plate is provided next to each connecting groove. The connecting plate is fixedly connected to the outer wall of the rotating platform 301, and the drive shaft is rotatably connected to the connecting plate.

[0071] See Figure 6 and Figure 7 The rotating mechanism 3 also includes a linkage assembly, which is used to drive each second transmission assembly 308 to simultaneously and in the same direction to drive the drive sleeve 307 to rotate. The linkage assembly includes a third transmission assembly 309 and a drive source. The third transmission assembly 309 is any one of a sprocket 3092 chain 3091 assembly and a pulley assembly. In this embodiment, the third transmission assembly 309 is an sprocket 3092 assembly as an example. The linkage assembly includes a chain 3091 and a sprocket 3092. A sprocket 3092 is connected to each drive shaft, and the chain 3091 is simultaneously engaged with each sprocket 3092. The drive source is connected to the rotating platform 301. The drive source is a motor, and the output end of the drive source is connected to any one of the drive shafts. During operation, the drive source drives the drive shaft to rotate, which, through the transmission of the second transmission assembly 308, drives the drive sleeve 307 to rotate. During the rotation of the drive sleeve 307, the drive screw 306 is forced to expand and contract, thereby causing the multiple outer abutting blocks 305 to simultaneously contract toward the rotation center of the rotating platform 301, thereby clamping the spiral flow channel structure 2. When the drive source is reversed, the multiple outer abutting blocks 305 are forced to simultaneously expand toward the rotation center of the rotating platform 301, thereby releasing the spiral flow channel structure 2.

[0072] See Figure 8In this embodiment, the rotating mechanism 3 further includes a dust extraction device 310, which includes a suction nozzle 3101, a dust extraction duct 3102, a fan 3103, and a dust exhaust duct 3104. The dust extraction duct 3102 is connected to the air inlet of the fan 3103, and the dust exhaust duct 3104 is connected to the air outlet of the fan 3103. The suction nozzle 3101 is connected to the end of the dust extraction duct 3102 away from the fan 3103 and is located above the rotating platform 301. During welding, the dust extraction device 310 can remove the dust generated during welding, thereby improving the air quality of the working environment.

[0073] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from the other embodiments. Reference can be made to the description of the same or similar parts between the various embodiments. For the methods disclosed in the embodiments, since they correspond to the devices disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the devices.

[0074] The above describes in detail the manufacturing method for a spiral plate heat exchanger provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A method for manufacturing a spiral plate heat exchanger, characterized in that: include: A first width region (101) is selected in the middle region of the steel plate (1), the plate surface region on one side of the first width region (101) is a first to-be-wound region (102), and the plate surface region on the other side of the first width region (101) is a second to-be-wound region (103); Determining a first mounting point on the first to-be-wound area (102) and located on the front side of the steel plate (1), wherein a plurality of the first mounting points are distributed in a lattice pattern; Welding a distance column (109) at each of the first installation points using a stud welding gun; Determining second mounting points on the second to-be-wound area (103) and on the reverse side of the steel plate (1), wherein a plurality of second mounting points are distributed in a lattice pattern; Welding a distance column (109) at each of the second mounting points using a stud welding gun; A plate rolling machine is used to apply torque to the first width region (101), so that the first to-be-wound region (102) and the second to-be-wound region (103) are spirally wound outside the first width region (101) to form a spiral flow channel structure (2), wherein the spiral portion of the spiral flow channel structure (2) has a material spiral flow channel (201) and a medium spiral flow channel (202), and the center region of the spiral flow channel structure (2) has a material flow channel (203) and a medium flow channel (204), the material flow channel (203) is communicated with the material spiral flow channel (201), and the medium flow channel (204) is communicated with the medium spiral flow channel (202); Bending the end of the first to-be-wound area (102) to form a first discharge channel (205); Bending the end of the second to-be-wound area (103) to form a first feeding channel (206); The spiral flow channel structure (2) is mounted on a rotating mechanism (3), and the rotating mechanism (3) is used to fix sealing fillers in the openings of the material spiral flow channel (201) and the medium spiral flow channel (202); First sealing plates are respectively fixed at the openings at both ends of the material flow channel (203), and second sealing plates are respectively fixed at the openings at both ends of the medium flow channel (204); A first inlet (207) is fixed on any of the first sealing plates, a first outlet (208) is fixed on any of the second sealing plates, a second outlet (209) is connected to the first discharge channel (205), and a second inlet (210) is connected to the first feed channel (206).

2. The method for manufacturing a spiral plate heat exchanger according to claim 1, characterized in that: The rotating mechanism (3) comprises a rotating platform (301), a support frame (302), a driving member (303), and a first transmission assembly (304); the rotating platform (301) is rotatably connected to the support frame (302); the first transmission assembly (304) is connected between the rotating platform (301) and the driving member (303); and the driving member (303) drives the rotating platform (301) to rotate via the first transmission assembly (304).

3. The method for manufacturing a spiral plate heat exchanger according to claim 2, characterized in that: The rotating mechanism (3) further comprises a positioning assembly, wherein the positioning assembly is arranged on the rotating platform (301), and the positioning assembly is provided with at least three groups in a circumferential direction with the rotation center of the rotating platform (301) as a symmetric center. The rotating platform (301) is provided with a sliding groove (3011), and the sliding groove (3011) is provided with at least a plurality of groups in a circumferential direction with the rotation center of the rotating platform (301) as a symmetric center. The sliding grooves (3011) correspond to the positioning assemblies one by one, and the plurality of positioning assemblies can shrink or expand toward the rotation center of the rotating platform (301). The spiral flow channel structure (2) is located between the plurality of positioning assemblies, and the spiral flow channel structure (2) is clamped by the plurality of positioning assemblies.

4. The method for manufacturing a spiral plate heat exchanger according to claim 3, characterized in that: The positioning assembly includes an outer clamping block (305), a driving screw (306), a driving sleeve (307) and a second transmission assembly (308). The bottom of the outer clamping block (305) slides in the sliding groove (3011). A rotating hole is provided on the groove wall of the sliding groove (3011) away from the rotation center of the rotating platform (301). The rotating hole passes through the outer wall of the rotating platform (301). One end of the driving screw (306) is rotatably connected to the outer clamping block (305), and the other end passes through the rotating hole and then passes through the outer wall of the rotating platform (301). The driving sleeve (307) is rotatably connected to the outer wall of the rotating platform (301), and the driving screw (306) passes through the outer wall of the rotating platform (301) and the shaft portion passes through the driving sleeve (307). The driving screw (306) is threadedly engaged with the inner wall of the driving sleeve (307). The second transmission assembly (308) is provided on the driving sleeve (307). The rotating mechanism (3) also includes a linkage assembly, which is used to drive each second transmission assembly (308) to drive the driving sleeve (307) to rotate simultaneously and in the same direction.

5. The method for manufacturing a spiral plate heat exchanger according to any one of claims 2 to 4, characterized in that: The rotating mechanism (3) further comprises a smoke collecting device (310), the smoke collecting device (310) comprising a suction nozzle (3101), a smoke collecting pipe (3102), a fan (3103), and a smoke exhaust pipe (3104), the smoke collecting pipe (3102) being connected to the air inlet of the fan (3103), the smoke exhaust pipe (3104) being connected to the air outlet of the fan (3103), the suction nozzle (3101) being connected to one end of the smoke collecting pipe (3102) away from the fan (3103), and the suction nozzle (3101) being located above the rotating platform (301).

6. The method for manufacturing a spiral plate heat exchanger according to claim 2, characterized in that: The first transmission assembly (304) is at least one of the following: a gear set transmission assembly, a sprocket transmission assembly, and a pulley transmission assembly.

7. The method for manufacturing a spiral plate heat exchanger according to claim 4, characterized in that: The second transmission assembly (308) is a bevel gear set transmission assembly.

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