Graphite heat exchanger shell positioning and polishing device

Abstract

The application discloses a graphite heat exchanger shell positioning and polishing device, which comprises a machine body support frame, a height control mechanism, a heat exchanger shell positioning mechanism and a reciprocating polishing mechanism. The upper end of the machine body support frame is connected with the height control mechanism. The middle part of the height control mechanism is connected with the heat exchanger shell positioning mechanism. The middle part of the machine body support frame is connected with the reciprocating polishing mechanism. The height control mechanism comprises a transverse support plate, an electric telescopic pump and a lifting guide assembly. The graphite heat exchanger shell positioning and polishing device can realize the reciprocating movement of the middle part of the machine body support frame through the reciprocating polishing mechanism, and the surface of the heat exchanger shell can be polished at the same time. Thus, the partial area waste of the polishing wheel can be avoided, and the middle surface of the heat exchanger shell can be completely polished.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger processing technology, and in particular to a positioning and grinding device for a graphite heat exchanger casing. Background Technology

[0002] Graphite heat exchangers are devices that utilize the excellent thermal conductivity and corrosion resistance of graphite materials for heat transfer. They are widely used in industries such as chemical, pharmaceutical, and metallurgy for handling corrosive media. Their main characteristics include high thermal conductivity, corrosion resistance, high temperature resistance, and a low coefficient of expansion. Common types include perforated, shell-and-tube, and plate graphite heat exchangers, which are particularly suitable for cooling, heating, condensation, and evaporation processes of chemical media such as sulfuric acid, nitric acid, and hydrofluoric acid. The sanding process on the heat exchanger shell ensures a smooth, flawless surface, preparing it for subsequent painting or other treatments. This process is crucial for improving the equipment's aesthetics, extending its service life, and ensuring its proper operation.

[0003] As disclosed in Chinese Patent Publication No. (CN117140274B), this invention provides a positioning and grinding device for a graphite heat exchanger casing, relating to the technical field of grinding devices. The device includes: an installation mechanism that mounts the heat exchanger casing on two sets of limiting rods; rotating the heat exchanger casing causes the bottom portion to be ground by grinding rollers; and two sets of limiting rods that, when the heat exchanger casing rotates on the two sets of limiting rods, enable the limiting rods to grind the portion of the heat exchanger casing with the secondary tube. The limiting effect prevents the secondary tube from flipping to the bottom of the heat exchanger shell, avoiding collision with the grinding roller during grinding. This solves the problem of imperfect grinding structure in existing heat exchanger shell grinding devices. Existing grinding devices usually fix the heat exchanger shell on a rotating chuck and grind by rotating the heat exchanger. However, the outer end of the heat exchanger usually has a secondary tube. Therefore, during grinding, the secondary tube will collide with the grinding roller, resulting in damage to the heat exchanger shell.

[0004] In summary, existing technologies use grinding rollers to grind the heat exchanger shell. However, these devices have the following technical problems: Since heat exchangers vary in size, their shells also differ. When grinding, the device grinds the entire surface of the shell. If the shell size is smaller than the grinding roller size, the center of the roller will wear severely while the sides show less wear. Furthermore, flanges are typically welded to both ends of the heat exchanger shell. If the grinding roller size is larger than the shell size, it cannot grind the recessed surface of the shell. Therefore, a graphite heat exchanger shell positioning and grinding device is needed to solve the technical problems mentioned in the patent and provide a new technical solution. Summary of the Invention

[0005] Based on this, it is necessary to provide a graphite heat exchanger casing positioning and grinding device to address the above-mentioned technical problems. By setting a reciprocating grinding mechanism, the grinding wheel is reduced in size and installed on the outer ring of the outer wall support sleeve. Then, it can reciprocate in the middle of the machine body support frame when driven by the second threaded rod. At the same time, the surface of the heat exchanger casing can be ground, thus avoiding the waste of part of the grinding wheel area and completely grinding the middle surface of the heat exchanger casing.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A positioning and grinding device for graphite heat exchanger casing, which is used for grinding the casing of graphite heat exchangers.

[0007] The graphite heat exchanger casing positioning and grinding device specifically includes a body support frame, a height control mechanism, a heat exchanger casing positioning mechanism, and a reciprocating grinding mechanism. The upper end of the body support frame is connected to the height control mechanism, the middle part of the height control mechanism is connected to the heat exchanger casing positioning mechanism, and the middle part of the body support frame is connected to the reciprocating grinding mechanism. The height control mechanism includes a horizontal support plate, an electric telescopic pump, and a lifting guide assembly. The horizontal support plate is fixedly connected to the middle of the machine body support frame, and the electric telescopic pump is fixedly connected to the top surface of the horizontal support plate.

[0008] In a preferred embodiment of the graphite heat exchanger casing positioning and grinding device provided by the present invention, the lifting guide assembly includes longitudinal support columns, height control clearance grooves, height control rods, support rod clearance grooves, and sliding support rods. Two longitudinal support columns are fixedly connected to the top surface of the body support frame in a mirror-symmetrical manner. Height control clearance grooves are provided on the sides of the two longitudinal support columns that are close to each other. A height control rod is slidably connected to the inner wall of the height control clearance groove. A height control rod is fixedly connected to the output end of the electric telescopic pump. Support rod clearance grooves are provided on the front sides of the two longitudinal support columns. Sliding support rods are slidably connected to the inner walls of the two support rod clearance grooves. The two sliding support rods are respectively fixedly connected to both ends of the height control rod.

[0009] As a preferred embodiment of the graphite heat exchanger casing positioning and grinding device provided by the present invention, the heat exchanger casing positioning mechanism includes a guide rail, a positioning disk, a spacing adjustment component, an infrared spacing detection component, and a casing fixing component. The bottom surfaces of the two sliding support rods are fixedly connected to the guide rail, and the surface of the guide rail is mirror-symmetrically connected to the positioning disk. The positioning disk on the left side is fixedly connected to the surface of the guide rail, and the positioning disk on the right side is slidably connected to the surface of the guide rail.

[0010] In a preferred embodiment of the graphite heat exchanger housing positioning and grinding device provided by the present invention, the spacing adjustment component includes a first servo motor and a first threaded rod. The top of the positioning disk on the left is fixedly connected to the first servo motor, and the output end of the first servo motor is drivenly connected to the first threaded rod. The first threaded rod is threadedly connected to the positioning disk on the right.

[0011] In a preferred embodiment of the graphite heat exchanger casing positioning and grinding device provided by the present invention, the infrared spacing detection component includes an L-shaped extension rod and an infrared rangefinder. The two positioning discs are fixedly connected to the L-shaped extension rods on their opposite sides, and the two L-shaped extension rods are fixedly connected to the infrared rangefinders on their opposite sides.

[0012] In a preferred embodiment of the graphite heat exchanger housing positioning and grinding device provided by the present invention, the housing fixing assembly includes a second servo motor, a transmission positioning column, a storage groove, a circular sliding plate, a spring, a rotating shaft, and a housing inner wall top rod. The second servo motor is fixedly connected to the side of the right positioning plate away from the left positioning plate. The transmission positioning column is rotatably connected to the side of the two positioning plates that are close to each other. The transmission positioning column on the surface of the right positioning plate is drivenly connected to the second servo motor. The storage groove is opened on the side of the two transmission positioning columns that are close to each other. The circular sliding plate is slidably connected to the surface of the two transmission positioning columns. A spring is sleeved on the surface of the transmission positioning column. The two ends of the spring are fixedly connected to the positioning plate and the circular sliding plate, respectively. The rotating shaft is fixedly connected to the inner wall of the storage groove. The housing inner wall top rod is rotatably connected to the surface of the rotating shaft. The surface of the housing inner wall top rod is in close contact with the surface of the circular sliding plate.

[0013] In a preferred embodiment of the graphite heat exchanger casing positioning and grinding device provided by the present invention, the receiving groove is cross-shaped, and four rotating shafts and the inner wall top rod of the outer casing are connected to the middle of the receiving groove.

[0014] As a preferred embodiment of the graphite heat exchanger casing positioning and grinding device provided by the present invention, the reciprocating grinding mechanism includes a third servo motor, a second threaded rod, a guide rod, a grinding assembly, and a grinding transmission assembly. The surface of the machine body support frame is fixedly connected to the third servo motor, and the output end of the third servo motor is drivenly connected to the second threaded rod. The second threaded rod is rotatably connected to the middle part of the machine body support frame, and the middle part of the machine body support frame is fixedly connected to the guide rod.

[0015] In a preferred embodiment of the graphite heat exchanger casing positioning and grinding device provided by the present invention, the grinding assembly includes a grinding liner bracket, a main support sleeve, bearings, an outer wall support sleeve, and a grinding wheel. The grinding liner bracket is slidably connected to the surface of the guide rod. The grinding liner bracket is threadedly connected to the second threaded rod. Two bearings are fixedly connected to the outer wall of the main support sleeve. The outer wall support sleeve is fixedly connected to the surfaces of the two bearings. The grinding wheel is fixedly connected to the outer wall support sleeve.

[0016] As a preferred embodiment of the graphite heat exchanger casing positioning and grinding device provided by the present invention, the grinding transmission assembly includes an internal gear ring, a fourth servo motor and a transmission gear. The inner wall of the outer wall support sleeve is fixedly connected to the fourth servo motor, and the surface of the grinding liner bracket is fixedly connected to the fourth servo motor. The output end of the fourth servo motor is driven by a transmission gear, and the transmission gear meshes with the internal gear ring.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The graphite heat exchanger housing positioning and grinding device provided by the present invention, by setting a reciprocating grinding mechanism, reduces the size of the grinding wheel and installs it on the outer ring of the outer wall support sleeve, so that it can reciprocate in the middle of the machine body support frame when driven by the second threaded rod, and can grind the surface of the heat exchanger housing at the same time, thereby avoiding the waste of part of the grinding wheel area and completely grinding the middle surface of the heat exchanger housing.

[0018] The graphite heat exchanger housing positioning and grinding device provided by the present invention can monitor the distance between the two ends of the grinding wheel in real time by setting an infrared distance detection component in the positioning mechanism of the heat exchanger housing and installing two infrared rangefinders. If the grinding wheel is too close to one infrared rangefinder, the third servo motor can be controlled to reverse, thereby accurately controlling the grinding position of the heat exchanger housing.

[0019] The graphite heat exchanger housing positioning and grinding device provided by the present invention has a height control mechanism and a heat exchanger housing positioning mechanism. The heat exchanger housing positioning mechanism can fix heat exchanger housings of different sizes, while the height control mechanism can control the relative position of the heat exchanger housing and the grinding wheel, thereby increasing the overall adaptability of the device. Attached Figure Description

[0020] To more clearly illustrate the solutions in this invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the overall front structure of the graphite heat exchanger casing positioning and grinding device provided by the present invention.

[0022] Figure 2 This is a schematic diagram of the rear overall structure of the graphite heat exchanger casing positioning and grinding device provided by the present invention.

[0023] Figure 3 A schematic diagram of the connection structure between the height control mechanism and the heat exchanger shell positioning mechanism of the graphite heat exchanger shell positioning and grinding device provided by the present invention.

[0024] Figure 4 A schematic diagram of the height control mechanism of the graphite heat exchanger casing positioning and grinding device provided by the present invention.

[0025] Figure 5 This is a schematic diagram of the structure of the heat exchanger housing positioning mechanism of the graphite heat exchanger housing positioning and grinding device provided by the present invention.

[0026] Figure 6 This is a schematic diagram of the infrared spacing detection component in the heat exchanger housing positioning mechanism of the graphite heat exchanger housing positioning and grinding device provided by the present invention.

[0027] Figure 7 This is a schematic diagram of the internal structure of the outer shell fixing component in the heat exchanger outer shell positioning mechanism of the graphite heat exchanger shell positioning and grinding device provided by the present invention.

[0028] Figure 8 This is a schematic diagram of the reciprocating grinding mechanism of the graphite heat exchanger casing positioning and grinding device provided by the present invention.

[0029] Figure 9 This is a schematic diagram of the internal structure of the reciprocating grinding mechanism of the graphite heat exchanger casing positioning and grinding device provided by the present invention.

[0030] The markings in the diagram are explained as follows: 1. Body support frame; 2. Height control mechanism; 3. Heat exchanger shell positioning mechanism; 4. Reciprocating grinding mechanism; 5. Transverse support plate; 6. Electric telescopic pump; 7. Longitudinal support column; 8. Height control clearance groove; 9. Height control rod; 10. Support rod clearance groove; 11. Sliding support rod; 12. Guide rail; 13. Positioning plate; 14. First servo motor; 15. First threaded rod; 16. L-shaped extension rod; 17. Infrared rangefinder; 18. 19. Second servo motor; 20. Transmission positioning column; 21. Storage slot; 22. Circular sliding plate; 23. Spring; 24. Rotating shaft; 25. Inner wall top rod of outer shell; 26. Third servo motor; 27. Second threaded rod; 28. Guide light rod; 29. ​​Grinding inner lining bracket; 30. Main body support sleeve; 31. Bearing; 32. Outer wall support sleeve; 33. Grinding wheel; 34. Internal gear ring; 35. Fourth servo motor; 36. Transmission gear. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0032] As described in the background art, since the size of heat exchangers varies, the size of their outer shells also varies. When the above-mentioned device is polished, the surface of the outer shell is polished as a whole. If the size of the outer shell is smaller than the size of the polishing roller, it will cause severe wear in the middle of the polishing roller while the wear marks on the sides are lighter. At the same time, flanges are generally welded to both ends of the heat exchanger outer shell. If the size of the polishing roller is larger than the size of the outer shell, it is impossible to polish the recessed surface of the outer shell.

[0033] To solve this technical problem, the present invention provides a graphite heat exchanger casing positioning and grinding device, which is applied to the grinding of the outer casing of a graphite heat exchanger.

[0034] For details, please refer to Figures 1-9 The graphite heat exchanger casing positioning and grinding device specifically includes a body support frame 1, a height control mechanism 2, a heat exchanger casing positioning mechanism 3, and a reciprocating grinding mechanism 4. The upper end of the body support frame 1 is connected to the height control mechanism 2, the middle part of the height control mechanism 2 is connected to the heat exchanger casing positioning mechanism 3, and the middle part of the body support frame 1 is connected to the reciprocating grinding mechanism 4. The height control mechanism 2 includes a horizontal support plate 5, an electric telescopic pump 6, and a lifting guide assembly. The horizontal support plate 5 is fixedly connected to the middle of the machine body support frame 1, and the electric telescopic pump 6 is fixedly connected to the top surface of the horizontal support plate 5.

[0035] The graphite heat exchanger housing positioning and grinding device provided by the present invention, by setting a reciprocating grinding mechanism 4, reduces the size of the grinding wheel 32 and installs it on the outer ring of the outer wall support sleeve 31, so that it can reciprocate in the middle of the machine body support frame 1 when the second threaded rod 26 is driven, and can grind the surface of the heat exchanger housing at the same time, thereby avoiding the waste of part of the area of ​​the grinding wheel 32 and completely grinding the middle surface of the heat exchanger housing.

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] A graphite heat exchanger casing positioning and grinding device includes a body support frame 1, a height control mechanism 2, a heat exchanger casing positioning mechanism 3, and a reciprocating grinding mechanism 4. The upper end of the body support frame 1 is connected to the height control mechanism 2, the middle part of the height control mechanism 2 is connected to the heat exchanger casing positioning mechanism 3, and the middle part of the body support frame 1 is connected to the reciprocating grinding mechanism 4. The height control mechanism 2 includes a horizontal support plate 5, an electric telescopic pump 6, and a lifting guide assembly. The horizontal support plate 5 is fixedly connected to the middle of the machine body support frame 1, and the electric telescopic pump 6 is fixedly connected to the top surface of the horizontal support plate 5.

[0038] Specifically, the lifting guide assembly includes longitudinal support columns 7, height control clearance grooves 8, height control rods 9, support rod clearance grooves 10, and sliding support rods 11. Two longitudinal support columns 7 are fixedly connected to the top surface of the body support frame 1 in a mirror-symmetrical manner. Height control clearance grooves 8 are provided on the sides of the two longitudinal support columns 7 that are close to each other. Height control rods 9 are slidably connected to the inner walls of the height control clearance grooves 8. The output end of the electric telescopic pump 6 is fixedly connected to the height control rods 9. Support rod clearance grooves 10 are provided on the front sides of the two longitudinal support columns 7. Sliding support rods 11 are slidably connected to the inner walls of the two support rod clearance grooves 10. The two sliding support rods 11 are fixedly connected to the two ends of the height control rods 9, respectively.

[0039] Specifically, the heat exchanger housing positioning mechanism 3 includes a guide rail 12, a positioning disk 13, a spacing adjustment component, an infrared spacing detection component, and a housing fixing component. The bottom surfaces of the two sliding support rods 11 are fixedly connected to the guide rail 12, and the positioning disk 13 is mirror-symmetrically connected to the surface of the guide rail 12. The left positioning disk 13 is fixedly connected to the surface of the guide rail 12, and the right positioning disk 13 is slidably connected to the surface of the guide rail 12.

[0040] Specifically, the spacing adjustment component includes a first servo motor 14 and a first threaded rod 15. The top of the left positioning disk 13 is fixedly connected to the first servo motor 14, and the output end of the first servo motor 14 is drivenly connected to the first threaded rod 15. The first threaded rod 15 is threadedly connected to the right positioning disk 13.

[0041] Specifically, the infrared distance detection component includes an L-shaped extension rod 16 and an infrared rangefinder 17. The L-shaped extension rod 16 is fixedly connected to the side of the two positioning disks 13 that is far apart from each other, and the infrared rangefinder 17 is fixedly connected to the side of the two L-shaped extension rods 16 that is far away from the positioning disks 13 that is close to each other.

[0042] Specifically, the outer casing fixing assembly includes a second servo motor 18, a transmission positioning post 19, a storage groove 20, a circular sliding plate 21, a spring 22, a rotating shaft 23, and an inner wall top rod 24. The second servo motor 18 is fixedly connected to the side of the right positioning plate 13 away from the left positioning plate 13. The transmission positioning post 19 is rotatably connected to the side of the two positioning plates 13 that are close to each other. The transmission positioning post 19 on the surface of the right positioning plate 13 is connected to the second servo motor 18. The storage groove 20 is opened on the side of the two transmission positioning posts 19 that are close to each other. The circular sliding plate 21 is slidably connected to the surface of the two transmission positioning posts 19. The spring 22 is sleeved on the surface of the transmission positioning post 19. The two ends of the spring 22 are fixedly connected to the positioning plate 13 and the circular sliding plate 21, respectively. The rotating shaft 23 is fixedly connected to the inner wall of the storage groove 20. The inner wall top rod 24 is rotatably connected to the surface of the rotating shaft 23. The surface of the inner wall top rod 24 is in close contact with the surface of the circular sliding plate 21.

[0043] Specifically, the storage slot 20 is cross-shaped, and four rotating shafts 23 and the inner wall top rod 24 of the outer shell are connected to the middle of the storage slot 20.

[0044] Specifically, the reciprocating grinding mechanism 4 includes a third servo motor 25, a second threaded rod 26, a guide rod 27, a grinding assembly, and a grinding transmission assembly. The third servo motor 25 is fixedly connected to the surface of the machine body support frame 1. The output end of the third servo motor 25 is drivenly connected to the second threaded rod 26. The second threaded rod 26 is rotatably connected to the middle part of the machine body support frame 1. The guide rod 27 is fixedly connected to the middle part of the machine body support frame 1.

[0045] Specifically, the grinding assembly includes a grinding inner liner bracket 28, a main support sleeve 29, bearings 30, an outer wall support sleeve 31, and a grinding wheel 32. The grinding inner liner bracket 28 is slidably connected to the surface of the guide rod 27. The grinding inner liner bracket 28 is threadedly connected to the second threaded rod 26. Two bearings 30 are fixedly connected to the outer wall of the main support sleeve 29. The outer wall support sleeve 31 is fixedly connected to the surface of the two bearings 30. The grinding wheel 32 is fixedly connected to the outer wall support sleeve 31.

[0046] Specifically, the grinding transmission assembly includes an internal gear ring 33, a fourth servo motor 34, and a transmission gear 35. The fourth servo motor 34 is fixedly connected to the inner wall of the outer wall support sleeve 31. The fourth servo motor 34 is fixedly connected to the surface of the grinding inner liner bracket 28. The output end of the fourth servo motor 34 is connected to the transmission gear 35, and the transmission gear 35 meshes with the internal gear ring 33.

[0047] With the above structural design, when using the device, the heat exchanger shell is first placed in the middle of the two positioning discs 13. After that, the first servo motor 14 is turned on, and the first servo motor 14 drives the first threaded rod 15 to rotate. The rotation of the first threaded rod 15 can drive the right positioning disc 13 to move closer to the left positioning disc 13. At the same time, the circular sliding plate 21 first contacts the heat exchanger shell. After being squeezed, the two circular sliding plates 21 slide on the surface of the transmission positioning column 19. At the same time, the transmission positioning column 19 squeezes and contracts the spring 22. At this time, during the movement of the circular sliding plate 21, it pushes the inner wall top rod 24 of the shell to rotate around the rotating shaft 23 and rotate into the receiving groove 20. At the same time, the rear end of the inner wall top rod 24 rotates and the front end rises and presses against the inner wall of the heat exchanger shell, thereby completing the fixation of the heat exchanger shell. After completion, the first servo motor 14 is turned off. Servo motor 14 is activated, and electric telescopic pump 6 retracts. The retraction of electric telescopic pump 6, via height control lever 9, drives sliding support rod 11 to descend along the inner walls of height control clearance groove 8 and support rod clearance groove 10. Simultaneously, sliding support rod 11 descends, causing the heat exchanger housing at the bottom of guide rail 12 to descend. Once the heat exchanger housing is flush with the top surface of grinding wheel 32, electric telescopic pump 6 is deactivated. At this point, two infrared rangefinders 17 are positioned on either side of the heat exchanger housing. The fourth servo motor 34 is then activated, driving transmission gear 35 to rotate. Since transmission gear 35 meshes with internal gear ring 33, it can pass through the internal gear... Ring 33 drives the grinding wheel 32 to rotate, which grinds the heat exchanger shell. The second servo motor 18 is activated, driving the right-side transmission positioning column 19 to rotate. The transmission positioning column 19 contacts the inside of the heat exchanger shell via the inner wall push rod 24, thus rotating the heat exchanger shell and achieving circumferential grinding. At this time, the third servo motor 25 is activated, driving the second threaded rod 26 to rotate, which in turn causes the grinding liner support 28 to slide on the surface of the guide rod 27. Simultaneously, the grinding liner support 28 drives the grinding wheel 32 to slide, grinding the heat exchanger shell. The heat exchanger shell is thoroughly polished. When the polishing wheel 32 gets too close to one side of the infrared rangefinder 17, the infrared rangefinder 17 sends a signal to control the third servo motor 25 to reverse. The third servo motor 25 then drives the second threaded rod 26 to reverse, causing the polishing liner support 28 to move the polishing wheel 32 to the opposite position. When it gets too close to the other side of the infrared rangefinder 17, the infrared rangefinder 17 also sends a signal to control the third servo motor 25 to drive the second threaded rod 26 to reverse, which in turn causes the polishing liner support 28 to move the polishing wheel 32 in the opposite direction. This process is repeated until the surface of the heat exchanger shell is polished.

Claims

1. A positioning and grinding device for a graphite heat exchanger casing, characterized in that; It includes a body support frame (1), a height control mechanism (2), a heat exchanger shell positioning mechanism (3), and a reciprocating grinding mechanism (4). The upper end of the body support frame (1) is connected to the height control mechanism (2), the middle part of the height control mechanism (2) is connected to the heat exchanger shell positioning mechanism (3), and the middle part of the body support frame (1) is connected to the reciprocating grinding mechanism (4). The height control mechanism (2) includes a horizontal support plate (5), an electric telescopic pump (6) and a lifting guide assembly. The horizontal support plate (5) is fixedly connected to the middle of the body support frame (1), and the electric telescopic pump (6) is fixedly connected to the top surface of the horizontal support plate (5). The lifting guide assembly includes a longitudinal support column (7), a height control clearance groove (8), a height control rod (9), a support rod clearance groove (10), and a sliding support rod (11). The top surface of the body support frame (1) is mirror-symmetrically fixedly connected to two longitudinal support columns (7). The two longitudinal support columns (7) are provided with height control clearance grooves (8) on their sides that are close to each other. The inner wall of the height control clearance groove (8) is slidably connected to the height control rod (9). The output end of the electric telescopic pump (6) is fixedly connected to the height control rod (9). The front of the two longitudinal support columns (7) is provided with support rod clearance grooves (10). The inner wall of the two support rod clearance grooves (10) is slidably connected to the sliding support rod (11). The two sliding support rods (11) are fixedly connected to the two ends of the height control rod (9) respectively. The heat exchanger shell positioning mechanism (3) includes a guide rail (12), a positioning disk (13), a spacing adjustment component, an infrared spacing detection component, and a shell fixing component. The bottom surfaces of the two sliding support rods (11) are fixedly connected to the guide rail (12). The surface of the guide rail (12) is mirror-symmetrically connected to the positioning disk (13). The positioning disk (13) on the left side is fixedly connected to the surface of the guide rail (12), and the positioning disk (13) on the right side is slidably connected to the surface of the guide rail (12). The outer casing fixing assembly includes a second servo motor (18), a transmission positioning post (19), a storage slot (20), a circular sliding plate (21), a spring (22), a rotating shaft (23), and an inner wall top rod (24). The second servo motor (18) is fixedly connected to the side of the right positioning disk (13) away from the left positioning disk (13). The transmission positioning post (19) is rotatably connected to the side of the two positioning disks (13) that are close to each other. The transmission positioning post (19) on the surface of the right positioning disk (13) is connected to the second servo motor (18) through transmission. The two transmission positioning posts are connected to the second servo motor (18). (19) A storage groove (20) is provided on each side that is close to each other. A circular sliding plate (21) is slidably connected to the surfaces of the two transmission positioning columns (19). A spring (22) is sleeved on the surface of the transmission positioning column (19). The two ends of the spring (22) are fixedly connected to the positioning plate (13) and the circular sliding plate (21) respectively. A rotating shaft (23) is fixedly connected to the inner wall of the storage groove (20). A shell inner wall top rod (24) is rotatably connected to the surface of the rotating shaft (23). The surface of the shell inner wall top rod (24) is in close contact with the surface of the circular sliding plate (21). The storage slot (20) is cross-shaped, and four rotating shafts (23) and the inner wall top rod (24) of the outer shell are connected in the middle of the storage slot (20).

2. The graphite heat exchanger casing positioning and grinding device according to claim 1, characterized in that, The spacing adjustment assembly includes a first servo motor (14) and a first threaded rod (15). The top of the positioning disk (13) on the left side is fixedly connected to the first servo motor (14), and the output end of the first servo motor (14) is driven by the first threaded rod (15). The first threaded rod (15) is threadedly connected to the positioning disk (13) on the right side.

3. The graphite heat exchanger casing positioning and grinding device according to claim 2, characterized in that, The infrared distance detection component includes an L-shaped extension rod (16) and an infrared rangefinder (17). The two positioning disks (13) are fixedly connected to each other on the side away from each other, and the two L-shaped extension rods (16) are fixedly connected to each other on the side away from each other.

4. The graphite heat exchanger casing positioning and grinding device according to claim 1, characterized in that, The reciprocating grinding mechanism (4) includes a third servo motor (25), a second threaded rod (26), a guide rod (27), a grinding assembly, and a grinding transmission assembly. The surface of the machine body support frame (1) is fixedly connected to the third servo motor (25). The output end of the third servo motor (25) is drivenly connected to the second threaded rod (26). The second threaded rod (26) is rotatably connected to the middle part of the machine body support frame (1). The middle part of the machine body support frame (1) is fixedly connected to the guide rod (27).

5. The graphite heat exchanger casing positioning and grinding device according to claim 4, characterized in that, The grinding assembly includes a grinding inner liner bracket (28), a main support sleeve (29), a bearing (30), an outer wall support sleeve (31), and a grinding wheel (32). The surface of the guide rod (27) is slidably connected to the grinding inner liner bracket (28). The grinding inner liner bracket (28) is threadedly connected to the second threaded rod (26). The outer wall of the main support sleeve (29) is fixedly connected to two bearings (30). The surface of the two bearings (30) is fixedly connected to the outer wall support sleeve (31). The outer wall support sleeve (31) is fixedly connected to the outer wall support sleeve (31). The outer wall support sleeve (31) is fixedly connected to the outer wall support sleeve (31).

6. The graphite heat exchanger casing positioning and grinding device according to claim 5, characterized in that, The grinding transmission assembly includes an internal gear ring (33), a fourth servo motor (34), and a transmission gear (35). The inner wall of the outer wall support sleeve (31) is fixedly connected to the fourth servo motor (34), and the surface of the grinding inner liner bracket (28) is fixedly connected to the fourth servo motor (34). The output end of the fourth servo motor (34) is connected to the transmission gear (35), and the transmission gear (35) meshes with the internal gear ring (33).

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