Pressure vessel girth welding device

Abstract

The invention relates to the technical field of pressure vessel machining, and discloses a pressure vessel girth welding device which comprises a base, moving mechanisms are arranged on the two sides of the top of the base, a positioning mechanism is arranged on the tops of the two moving mechanisms, and a pressure vessel is arranged on the top of the positioning mechanism. A supporting frame is fixedly connected to one side of the top of the base, a supporting frame is fixedly connected to the top of the supporting frame, a rotating mechanism is arranged on the outer side of the supporting frame, a fixing mechanism is arranged at the bottom of the supporting frame, and a welding mechanism is arranged on one side of the outer portion of the rotating mechanism. A cleaning structure is arranged on the other side of the outer portion of the rotating mechanism, and a smoke removing mechanism is arranged on the outer side of the welding mechanism. The pressure container can be accurately placed at a preset position by adjusting the distance between the movable block and the special-shaped block and utilizing contact and separation operation of the positioning pin and the outer surface of the pressure container. The pressure container is arranged between the connecting plate and the fixing cover, so that the position of the pressure container is stable in follow-up operation.

Description

Technical Field

[0001] The invention relates to the technical field of pressure vessel processing, in particular to a pressure vessel annular seam welding device. Background Art

[0002] In industrial production, pressure vessels are widely used. Pressure vessels are closed structures designed to withstand internal pressure and are usually used to store or process liquids or gases. Their design must meet strict safety standards to ensure that there is no leakage or explosion during use. The circumferential seam of the pressure vessel is placed on the cylindrical outer wall. As a key link in the manufacturing process of pressure vessels, circumferential seam welding has extremely high requirements for welding quality and operational safety. The circumferential seam welding of pressure vessels needs to ensure excellent weld quality while ensuring the safety of operators and a good working environment.

[0003] At present, there are many kinds of pressure vessel girth welding equipment on the market. Some equipment fixes the pressure vessel with simple clamps, such as bolts and other fasteners to fix the vessel. In addition, during the positioning process, the accuracy is insufficient and the pressure vessel cannot be accurately placed in the predetermined position, which leads to problems in subsequent welding and cleaning operations.

[0004] The existing pressure vessel girth welding equipment has obvious deficiencies in positioning accuracy and stability, cannot meet the needs of high-quality welding and safe operation, is prone to cause safety accidents, and will reduce the quality of girth processing, affecting the overall performance and service life of the pressure vessel. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a pressure vessel circumferential seam welding device, which solves the problems that the existing pressure vessel circumferential seam welding device has obvious deficiencies in positioning accuracy and stability, cannot meet the requirements of high-quality welding and safe operation, is prone to cause safety accidents, and will reduce the quality of circumferential seam processing, affecting the overall performance and service life of the pressure vessel.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pressure vessel circumferential seam welding device, comprising a base, both sides of the top of the base are provided with moving mechanisms, the tops of the two moving mechanisms are provided with positioning mechanisms, the tops of the positioning mechanisms are provided with a pressure vessel, one side of the top of the base is fixedly connected with a support frame, the top of the support frame is fixedly connected with a support frame, a rotating mechanism is provided on the outside of the support frame, a fixing mechanism is provided on the bottom of the support frame, a welding mechanism is provided on one side of the outside of the rotating mechanism, a cleaning structure is provided on the other side of the outside of the rotating mechanism, and a smoke removal mechanism is provided on the outside of the welding mechanism;

[0007] The positioning mechanism includes a connecting plate, a through groove of the connecting plate in contact with the bottom of the pressure vessel, a special-shaped block is fixedly connected to one side of the top of the connecting plate, a movable block is slidably connected to the other side of the top of the connecting plate, two springs 1 are arranged between the special-shaped block and the movable block, positioning pin 1 is fixedly connected to both sides of the outside of the special-shaped block, positioning pin 2 is fixedly connected to one side of the outside of the movable block, one end of the positioning pin 1 and the positioning pin 2 are in contact with the outside of the pressure vessel, and an adjustment component is arranged on the other side of the outside of the movable block, and the adjustment component is used to move the movable block.

[0008] Preferably, the adjustment assembly includes a connecting plate, the outer side of the connecting plate is fixedly connected to the other side of the outer side of the movable block, the two sides of the outer side of the connecting plate are fixedly connected to fixed plates, the internal through hole of the fixed plate is slidably connected with an insertion rod, the outer side of the insertion rod is sleeved with a spring 2, the bottom of the spring 2 is fixedly connected to the top of the fixed plate, the top of the spring 2 is fixedly connected to a cross plate, the top of the cross plate is fixedly connected to a pull rod, the outer side of the pull rod is slidably connected to the internal through hole of the connecting plate, a plurality of slots are opened on the other side of the top of the connecting plate, and the insertion rod is plugged into and matched with the slots.

[0009] Preferably, the fixing mechanism comprises a multi-stage telescopic rod, which is mounted on the inner wall of the support frame 5, and the output end of the multi-stage telescopic rod is fixedly connected with a fixing cover, and the bottom of the fixing cover fits with the top of the pressure vessel.

[0010] Preferably, the rotating mechanism includes a fixed block and a fixed sleeve, the top of the fixed block is fixedly connected to the outside of the support frame, the bottom of the fixed block is fixedly connected to motor 2, the output end of motor 2 is fixedly connected to a connecting rod, the bottom of the connecting rod is rotatably connected to the top of the support frame, the outside of the connecting rod is fixedly connected to a driving gear, the outside of the fixed sleeve is rotatably connected to the inner wall of the support frame, the outside of the fixed sleeve is fixedly connected to a gear ring, and the driving gear is meshingly connected to the gear ring.

[0011] Preferably, the welding mechanism includes a side plate 1, one end of which is fixedly connected to an outer side of a fixed sleeve, the top of the side plate 1 is fixedly connected to a motor 3, the output end of the motor 3 is fixedly connected to a screw 2, the bottom of the screw 2 is rotatably connected to the inner wall of the side plate 1, the outer side of the screw 2 is threadedly connected to a moving block 2, the outside of the moving block 2 is fixedly connected to a cylinder, and the output end of the cylinder is fixedly connected to a welding gun.

[0012] Preferably, the cleaning structure includes a side panel two and a fixed frame, one end of the side panel two is fixedly connected to the other side of the outside of the fixed sleeve, a plurality of springs three are fixedly connected to the inner cavity of the fixed frame, one end of the spring three is fixedly connected to a cleaning piece, and a fixing component is provided on the outer side of the side panel two, and the fixing component is used to fix the fixed frame.

[0013] Preferably, the fixing assembly includes a limit frame, the outer sides of the two limit frames are fixedly connected to the outer side of the second side plate, the bottom of the limit frame is fixedly connected to the limit shell, the outer side of the limit shell is rotatably connected to a lock plate, the outer side of the fixed frame is fixedly connected to two limit plates, the outer side of the limit plate slides on the inner wall of the limit frame, a limit hole is opened at the bottom of the fixed frame, the limit hole is arranged on the inner wall of the limit shell, the through hole of the limit shell and the inner wall of the limit hole are connected with a limit rod, and the lock plate is clamped with the limit rod.

[0014] Preferably, the smoke removal mechanism includes a fixed shell, the outer side of the fixed shell is fixedly connected to the outer side of the side panel, a fan is installed on the inner wall of the fixed shell, a connecting cover is fixedly connected to the outer side of the connecting cover, a smoke removal pipe is fixedly connected to the outer side of the fan, a connecting pipe is fixedly connected to the outer side of the fan, an activated carbon plate is arranged on the outer side of the connecting pipe, a water storage tank is arranged at the bottom of the fixed shell, and one end of the connecting pipe is arranged inside the water storage tank.

[0015] Preferably, a filter screen is provided between the fan and the connection cover.

[0016] Preferably, the moving mechanism includes a mounting shell, the bottom of the mounting shell is mounted on the top of the base, the outer side of the mounting shell is fixedly connected to motor 1, the output end of the motor 1 is fixedly connected to screw 1, one end of the screw 1 is rotatably connected to the inner wall of the mounting shell, the outer side of the screw 1 is threadedly connected to moving block 1, the outer side of the moving block 1 is fixedly connected to the outer side of the connecting plate, the inner wall of the mounting shell is fixedly connected to a guide rod, and the outer side of the guide rod is slidably connected to the internal through hole of moving block 1.

[0017] The present invention provides a pressure vessel circumferential seam welding device, which has the following beneficial effects:

[0018] 1. The present invention can accurately place the pressure vessel at a predetermined position by adjusting the distance between the movable block and the special-shaped block and utilizing the contact and separation operation between the positioning pin and the outer surface of the pressure vessel. The pressure vessel is between the connecting plate and the fixed cover, so that its position is stable in subsequent operations. This effectively prevents safety accidents that may be caused by the shaking and displacement of the container, ensures the personal safety of the operator and the safety of the surrounding equipment, and creates a stable and reliable environment for the entire operation process, which is crucial for subsequent welding, cleaning and other operations. It can ensure that the operation is carried out in the correct position, avoiding problems such as uneven welds and inadequate cleaning caused by positioning deviations, thereby improving the quality of the entire pressure vessel annular seam treatment.

[0019] 2. The present invention stably installs the fixed frame through a specific limit and clamping structure, and under the action of spring three, the cleaning piece fits tightly with the weld. After starting motor two, the gear transmission is used to drive the side plate two to rotate, so as to achieve comprehensive and effective cleaning of the weld, so that before welding, the rust, scale, oil, dust and debris left over from the previous processing on the weld surface and other impurities are effectively removed to ensure the quality of the weld. After the cleaning is completed, the disassembly method is very convenient. Just turn the lock plate to release the clamping, pull out the limit rod, take out the limit hole and the limit plate in turn, and you can easily remove the fixed frame. This makes it easy to check, repair or replace the cleaning piece, and can deal with worn or damaged cleaning pieces in time to ensure the efficiency of the next cleaning work. The convenient operation process reduces the labor intensity and operation difficulty of the operator during the cleaning and maintenance process, reduces the safety accidents that may be caused by complex operations, and ensures the safety of the operator.

[0020] 3. In the present invention, the smoke generated during welding enters the fixed shell from the connecting cover through the smoke removal pipe under the action of the fan, and first passes through the filter screen to filter out some impurities. The filtered smoke enters the water storage tank through the connecting pipe. In this process, the activated carbon plate in the connecting pipe further absorbs harmful substances in the smoke, effectively preventing the emission of harmful substances in the welding smoke, thereby achieving the purification of welding smoke, reducing the harm of welding smoke to the environment and operators, protecting their health, improving the working environment, and improving the comfort and safety of operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 It is a side view structural schematic diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the positioning mechanism structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the movable block of the present invention;

[0025] Figure 5 For the present invention Figure 4 A in the enlarged view;

[0026] Figure 6 It is a schematic diagram of the structure of the mobile mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the rotating mechanism of the present invention;

[0028] Figure 8 It is a schematic diagram of the welding mechanism structure of the present invention;

[0029] Fig. 9 It is a schematic diagram of the cleaning mechanism structure of the present invention;

[0030] Fig.10 For the present invention Fig. 9 The enlarged view of point B in the figure;

[0031] Fig.11 It is a schematic diagram of the smoke removal mechanism structure of the present invention.

[0032] Among them, 1. base; 2. moving mechanism; 201. mounting shell; 202. motor 1; 203. screw 1; 204. moving block 1; 205. guide rod; 3. positioning mechanism; 301. connecting plate; 302. special-shaped block; 303. positioning pin 1; 304. spring 1; 305. movable block; 306. positioning pin 2; 307. connecting plate; 308. fixed plate; 309. slot; 3010. plug rod; 3011. spring 2; 3012. horizontal plate; 3013. pull rod; 4. support frame; 401. support frame; 5. rotating mechanism; 501. fixed block; 502. motor 2; 503. connecting rod; 504. driving gear; 505. fixed sleeve; 506. gear ring; 6. fixed Mechanism; 601, multi-stage telescopic rod; 602, fixed cover; 7, welding mechanism; 701, side panel one; 702, motor three; 703, screw two; 704, moving block two; 705, cylinder; 706, welding gun; 8, cleaning structure; 801, side panel two; 802, fixed frame; 803, limit plate; 804, spring three; 805, cleaning piece; 806, limit frame; 807, limit shell; 808, limit hole; 809, limit rod; 8010, lock plate; 9, smoke removal mechanism; 901, fixed shell; 902, fan; 903, connecting cover; 904, smoke removal pipe; 905, connecting pipe; 906, activated carbon plate; 907, water storage tank; 908, filter; 10, pressure vessel. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the specification 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.

[0034] See also Figure 1-Figure 11 The embodiment of the present invention provides a pressure vessel circumferential seam welding device, including a base 1, and a moving mechanism 2 is arranged on both sides of the top of the base 1. The moving mechanism 2 can adjust the position of the positioning mechanism 3, thereby facilitating the positioning operation of the pressure vessel 10 at different initial placement positions. The top of the two moving mechanisms 2 is provided with a positioning mechanism 3, and the top of the positioning mechanism 3 is provided with a pressure vessel 10. In the positioning mechanism 3, the pressure vessel 10 can be accurately placed at a predetermined position by adjusting the distance between the movable block 305 and the special-shaped block 302, and using the contact and separation operation of the positioning pin and the outer surface of the pressure vessel 10. A support frame 4 is fixedly connected to one side of the top of the base 1, and the support frame 4 provides stable support for the support frame 401. A support frame 401 is fixedly connected to the top of the support frame 4. The support frame 401, as a bearing component, provides a reliable installation foundation for key operating components such as a rotating mechanism 5 and a fixing mechanism 6. A rotating mechanism 5 is arranged on the outside of the support frame 401, and the rotating mechanism 5 is the key to realizing circumferential seam welding and weld cleaning. A fixing mechanism 6 is provided at the bottom of the support frame 401, and the fixing mechanism 6 can firmly fix the pressure vessel 10 in a specific position. A welding mechanism 7 is provided on the outer side of the rotating mechanism 5, and the welding mechanism 7 is the core part for completing the circumferential seam welding of the pressure vessel 10. Its own structural design can accurately adjust the position of the welding gun 706, including the height and the distance from the weld, to adapt to pressure vessels 10 of different sizes and specifications. A cleaning structure 8 is provided on the other side of the outer side of the rotating mechanism 5, and the cleaning structure 8 cleans impurities at the weld. A smoke removal mechanism 9 is provided on the outer side of the welding mechanism 7 to reduce the pollution of smoke to the working environment, improve the working conditions of the operators, reduce the harm of harmful substances in the smoke to the health of the operators, and reduce the risk of respiratory diseases.

[0035] The positioning mechanism 3 includes a connecting plate 301, and the through groove of the connecting plate 301 contacts the bottom of the pressure vessel 10, providing a stable bottom support reference surface for the pressure vessel 10. The through groove structure can perform preliminary positioning and limiting of the pressure vessel 10 to a certain extent, so that the pressure vessel 10 has a relatively fixed placement position in the subsequent positioning operation, reducing its random movement in the plane, laying the foundation for accurately adjusting its position, and helping to improve the accuracy and stability of the entire positioning process. A special-shaped block 302 is fixedly connected to one side of the top of the connecting plate 301. The special-shaped block 302 is a key component of the positioning mechanism 3, and its fixed position provides stable support and accurate installation position for the positioning pin 1 303. A movable block 305 is slidably connected to the other side of the top of the connecting plate 301, and the adjustability of the relative position with the special-shaped block 302 greatly increases the versatility of the positioning mechanism 3. Two springs 1 304 are arranged between the special-shaped block 302 and the movable block 305. The spring 1 304 provides elastic force for the movable block 305, so that the positioning pin 2 306 can be attached to the outside of the pressure vessel 10 with appropriate pressure. The positioning pins 1 303 are fixedly connected to both sides of the outside of the special-shaped block 302, and the positioning pin 2 306 is fixedly connected to one side of the outside of the movable block 305. One end of the positioning pins 1 303 and 306 is attached to the outside of the pressure vessel 10. The attachment of the positioning pins 1 303 and 306 to the outside of the pressure vessel 10 realizes the precise position limitation of the pressure vessel 10 in the horizontal direction.

[0036] See also Figure 3-Figure 5, an adjustment component is provided on the other side of the outside of the movable block 305, and the adjustment component is used to move the movable block 305. The adjustment component includes a connecting plate 307, and the outer side of the connecting plate 307 is fixedly connected to the other side of the outside of the movable block 305. The connecting plate 307 serves as a connecting bridge between the movable block 305 and other adjustment components, and transmits the operating force of the adjustment component to the movable block 305, so that the operator can accurately control the movement of the movable block 305 by operating the adjustment component to adjust the positioning mechanism 3. The two sides of the outside of the connecting plate 307 are fixedly connected with fixed plates 308, and the fixed plates 308 provide a stable installation foundation and sliding guide for the insertion rod 3010. The insertion rod 3010 is slidably connected to the internal through hole of the fixed plate 308, and the insertion rod 3010 plays a key positioning role in the adjustment component. When the plug rod 3010 is inserted into the slot 309 on the connecting plate 301, it can firmly fix the movable block 305 in the current position, preventing the movable block 305 from being displaced due to vibration or other external forces during the operation of the equipment, thereby ensuring the stability of the positioning mechanism 3 in positioning the pressure vessel 10. When the position of the movable block 305 needs to be adjusted, the plug rod 3010 can be pulled out of the slot 309, which is convenient for operation. The outer sleeve of the plug rod 3010 is provided with a spring 2 3011, the bottom of the spring 2 3011 is fixedly connected to the top of the fixed plate 308, and the spring 2 3011 provides the plug rod 3010 with an elastic force for automatic reset. Under normal conditions, the spring 2 3011 keeps the plug rod 3010 inserted into the slot 309, ensuring the stability of the position of the movable block 305. When the movable block 305 needs to be adjusted, the pull rod 3013 is pulled to overcome the elastic force of the second spring 3011 to pull out the plug rod 3010. After the operation is completed, the second spring 3011 can automatically push the plug rod 3010 back into the slot 309. The top of the second spring 3011 is fixedly connected with a horizontal plate 3012. The horizontal plate 3012 serves as a connecting component between the second spring 3011 and the pull rod 3013, and evenly transmits the tension of the pull rod 3013 to the second spring 3011. The top of the horizontal plate 3012 is fixedly connected with a pull rod 3013. The outside of the pull rod 3013 is slidably connected to the internal through hole of the connecting plate 307. The pull rod 3013 provides a convenient operation interface for the operator. The operator can easily control the plugging and unplugging action of the plug rod 3010 by pulling the pull rod 3013 to adjust the position of the movable block 305. A plurality of slots 309 are provided on the other side of the top of the connecting plate 301, and the insert rods 3010 are plugged into the slots 309. The design of the plurality of slots 309 provides a plurality of selectable fixed positions, so that the movable block 305 can be adjusted to different positions within a larger range.

[0037] See also Figure 1 , Figure 2 and Figure 7The fixing mechanism 6 includes a multi-stage telescopic rod 601, which is installed on the inner wall of the support frame 401, and provides a stable and reliable installation foundation for the multi-stage telescopic rod 601. The output end of the multi-stage telescopic rod 601 is fixedly connected with a fixing cover 602, and the bottom of the fixing cover 602 fits with the top of the pressure vessel 10, which can effectively limit the pressure vessel 10 in the vertical direction to prevent it from jumping up and down, shifting, etc. when subjected to external forces (such as impact force during welding, vibration of equipment operation, etc.).

[0038] See also Figure 1 , Figure 2 and Figure 7 The rotating mechanism 5 includes a fixed block 501 and a fixed sleeve 505. The top of the fixed block 501 is fixedly connected to the outside of the support frame 401 to provide a support position for the motor 2 502. The bottom of the fixed block 501 is fixedly connected to the motor 2 502. The motor 2 502 is a prior art and drives the connecting rod 503 to provide a power source. The output end of the motor 2 502 is fixedly connected to the connecting rod 503, and the connecting rod 503 drives the driving gear 504 to rotate. The bottom of the connecting rod 503 is rotatably connected to the top of the support frame 4, providing a stable rotation fulcrum for the connecting rod 503. The outer side of the connecting rod 503 is fixedly connected to the driving gear 504, which is fixed on the connecting rod 503 and rotates with the rotation of the connecting rod 503. The outer side of the fixed sleeve 505 is rotatably connected to the inner wall of the support frame 4, so that the fixed sleeve 505 can stably rotate on the inner wall of the support frame 4, providing reliable rotation support for the fixed sleeve 505 and the components connected thereto. The outer side of the fixed sleeve 505 is fixedly connected with a gear ring 506, and the fixed connection between the gear ring 506 and the fixed sleeve 505 ensures that the gear ring 506 can rotate synchronously with the fixed sleeve 505 and accurately mesh with the driving gear 504. This enables the power transmitted by the driving gear 504 to effectively drive the fixed sleeve 505 to rotate. The driving gear 504 is meshed with the gear ring 506, and can accurately transmit the power of the motor to the fixed sleeve 505.

[0039] See also Figure 1 , Figure 2 , Figure 7 and Figure 8The welding mechanism 7 includes a side plate 1 701, one end of which is fixedly connected to the outer side of the fixed sleeve 505, and is the skeleton of the entire welding mechanism 7. The motor 3 702, the screw 2 703, the moving block 2 704, the cylinder 705 and the welding gun 706 are organically integrated together to ensure the stability of the relative positions between the components. When the fixed sleeve 505 rotates under the drive of the rotating mechanism 5, the side plate 1 701 can rotate synchronously therewith, thereby driving the welding gun 706 to move around the pressure vessel 10. Under the rotation of the rotating mechanism 5, the welding gun 706 is driven to rotate less than 190 degrees to the left and right. The top of the side plate 1 701 is fixedly connected with the motor 3 702, and the motor 3 702 is installed on the side plate 1 701, providing an independent power source for the height adjustment of the welding gun 706. The output end of the motor 3 702 is fixedly connected with the screw 2 703, and the fixed connection between the motor 3 702 and the screw 2 703 ensures the effective transmission of power from the motor to the screw. The bottom of screw rod 2 703 is rotatably connected to the inner wall of side plate 1 701, providing a stable rotation fulcrum for screw rod 2 703, so that screw rod 2 703 can rotate smoothly under the drive of motor 3 702. The outer side of screw rod 2 703 is threadedly connected to moving block 2 704, which converts the rotational motion of the screw into the linear motion of moving block 2 704. The outer part of moving block 2 704 is fixedly connected to cylinder 705, so that cylinder 705 can move with the position change of moving block 2 704. The output end of cylinder 705 is fixedly connected to welding gun 706. The fixed connection between cylinder 705 and welding gun 706 ensures that the thrust output by cylinder 705 can accurately act on welding gun 706, so that welding gun 706 can stably approach the weld for welding.

[0040] See also Figure 1 , Figure 2 , Fig. 9 and Fig.10, the cleaning structure 8 comprises a side plate 2 801 and a fixed frame 802, one end of the side plate 2 801 is fixedly connected to the other side of the outside of the fixed sleeve 505, and the side plate 2 801 and the fixed frame 802 constitute the main frame of the cleaning structure 8. As the part connected to the fixed sleeve 505, the side plate 2 801 connects the cleaning structure 8 with the rotating mechanism 5, so that the cleaning structure 8 can move with the rotation of the fixed sleeve 505, which is the basis for cleaning the weld. The fixed frame 802 is used to carry and fix the internal cleaning parts, ensuring that the position of the cleaning part 805 is relatively stable during the working process, and the two work together to achieve effective cleaning of the weld. The inner cavity of the fixed frame 802 is fixedly connected with a plurality of springs 3 804, which provide elastic support for the cleaning part 805. In the process of cleaning the weld, when the weld surface is uneven or has a certain height difference, the spring 3 804 can be adaptively retracted. It can keep the cleaning part 805 in good contact with the weld surface all the time, ensuring the consistency of the cleaning effect. One end of the spring three 804 is fixedly connected with a cleaning piece 805, and the cleaning piece 805 can be a brush plate.

[0041] See also Fig. 9 and Fig.10 The outer side of the second side plate 801 is provided with a fixing assembly, which is used to fix the fixing frame 802. The fixing assembly includes a limit frame 806. The outer sides of the two limit frames 806 are fixedly connected to the outer side of the second side plate 801. The limit frames 806 are fixed on the second side plate 801, which builds a stable frame structure for subsequent limiting and fixing operations. The bottom of the limit frame 806 is fixedly connected to a limit shell 807, and the limit shell 807 is connected to the limit frame 806, further enriching the limiting function of the fixing assembly. The outer side of the limit shell 807 is rotatably connected to a lock plate 8010, so that the operator can easily realize the locking or unlocking operation by rotating the lock plate 8010. Two limiting plates 803 are fixedly connected to the outer side of the fixed frame 802. The outer side of the limiting plate 803 slides on the inner wall of the limiting frame 806. The limiting plate 803 and the inner wall of the limiting frame 806 slide together to limit the movement of the fixed frame 802 from the side, thereby ensuring the lateral stability of the fixed frame 802 during the rotation process. A limiting hole 808 is provided at the bottom of the fixed frame 802. The limiting hole 808 is provided on the inner wall of the limiting shell 807. The limiting hole 808 is provided on the inner wall of the limiting shell 807 to limit the fixed frame 802 from the bottom. A limiting rod 809 is inserted between the through hole of the limiting shell 807 and the inner wall of the limiting hole 808. The insertion of the limiting rod 809 provides a reliable fixing method for the fixed frame 802. The locking plate 8010 is engaged with the limiting rod 809, and the engagement of the locking plate 8010 with the limiting rod 809 adds a layer of insurance to the entire fixing structure, which can prevent the limiting rod 809 from escaping from the limiting hole 808 due to unexpected circumstances (such as vibration, etc.).

[0042] See also Figure 1 , Figure 2 , Figure 8 and Fig.11 The smoke removal mechanism 9 includes a fixed shell 901, the outer side of the fixed shell 901 is fixedly connected to the outer side of the side plate 701, and the fixed shell 901 is used as the main frame of the smoke removal mechanism 9, and is fixedly connected to the side plate 701, so that the smoke removal mechanism 9 can be closely combined with the welding mechanism 7 in space to achieve an integrated layout. The inner wall of the fixed shell 901 is installed with a fan 902, which is the power source of the entire smoke removal process. The suction force generated by the operation of the fan 902 can actively suck the smoke generated during welding into the inside of the smoke removal mechanism 9, so that the smoke can be subsequently processed according to the set path, effectively avoiding the random diffusion of smoke in the working environment, and ensuring the health of the operator and the air quality of the workplace. The outer side of the fixed shell 901 is fixedly connected with a connecting cover 903, and the outer side of the connecting cover 903 is fixedly connected with a smoke removal pipe 904. The connecting cover 903 and the smoke removal pipe 904 are connected to the fixed shell 901 in sequence, providing a passage for the smoke to pass from the welding area to the inside of the smoke removal mechanism 9. They can collect and guide the smoke generated by welding into the fixed shell 901, ensuring that the smoke enters the subsequent purification process in an orderly manner and preventing the smoke from floating around. A connecting pipe 905 is fixedly connected to the outside of the fan 902, providing a conveying path for the smoke extracted by the fan 902, so that the smoke can be transported from the location of the fan 902 to the subsequent purification components. An activated carbon plate 906 is arranged on the outside of the connecting pipe 905. The activated carbon plate 906 is arranged on the outside of the connecting pipe 905. When the smoke passes through the connecting pipe 905, the activated carbon plate 906 can use its own powerful adsorption effect to effectively remove harmful chemicals in the smoke, such as formaldehyde, benzene and other organic pollutants and odors. A water storage tank 907 is provided at the bottom of the fixed shell 901, and one end of the connecting pipe 905 is provided inside the water storage tank 907. The provision of the water storage tank 907 plays a role in further purifying the smoke. When the smoke is transported to the water storage tank 907 through the fan 902, the connecting pipe 905, etc., some water-soluble harmful substances and impurities such as dust particles will be absorbed by the water or settle at the bottom of the tank, thereby achieving secondary purification of the smoke. At the same time, the water storage tank 907 also serves as a collection container, which can temporarily store sewage and other substances generated during the purification process, so as to facilitate subsequent unified treatment and avoid secondary pollution to the working environment.

[0043] See also Fig.11 A filter 908 is provided between the fan 902 and the connection cover 903, which can preliminarily filter the smoke entering the smoke removal mechanism 9. It can intercept larger particles of impurities in the smoke, such as welding slag particles, metal dust, etc., to prevent these large particles of impurities from entering the fan 902 or subsequent pipelines and purification components, thereby avoiding damage to the fan 902 and extending the service life of the equipment.

[0044] See also Figure 1 , Figure 2 and Figure 6 The mobile mechanism 2 includes a mounting shell 201, the bottom of which is mounted on the top of the base 1. The mounting shell 201, as the outer shell structure of the mobile mechanism 2, is mounted on the top of the base 1, providing a stable bearing platform for other components of the entire mobile mechanism 2. The outer side of the mounting shell 201 is fixedly connected to the motor 202, providing a reliable mounting position for the motor. The output end of the motor 202 is fixedly connected to a screw 203, and the fixed connection between the motor 202 and the screw 203 ensures the effective transmission of power from the motor to the screw. One end of the screw 203 is rotatably connected to the inner wall of the mounting shell 201, providing a stable rotation fulcrum for the screw 203, and the outer side of the screw 203 is threadedly connected to a moving block 204, which converts the rotational motion of the screw into the linear motion of the moving block 204. The outer side of the moving block 204 is fixedly connected to the outer side of the connecting plate 301, so that the linear motion of the moving block 204 can be directly transmitted to the connecting plate 301, thereby driving the pressure vessel 10 placed on the connecting plate 301 to move horizontally. The inner wall of the mounting shell 201 is fixedly connected with a guide rod 205, and the outer side of the guide rod 205 is slidably connected to the internal through hole of the moving block 204. The setting of the guide rod 205 provides a precise guiding effect for the linear motion of the moving block 204.

[0045] Working principle: First, pull the pull rod 3013, the pull rod 3013 drives the cross plate 3012 to move upward, stretch the spring 2 3011, and the plug rod 3010 moves up and disengages from the slot 309 on the connecting plate 301, and moves the movable block 305 through the connecting plate 307. The movable block 305 stretches the spring 1 304 to adjust the distance between the movable block 305 and the special-shaped block 302. After the adjustment is completed, release the pull rod 3013, and the plug rod 3010 is inserted into the corresponding slot 309 under the action of the spring 2 3011 to fix the position of the movable block 305. At this time, the bottom of the pressure vessel 10 is placed on the through groove on the connecting plate 301, and the two positioning pins 1 303 contact the outer surface of the pressure vessel 10. Then, by repeating the above steps of pulling the pull rod 3013, the movable block 305 moves toward the direction of the pressure vessel 10, so that the positioning pin 2 306 releases the pressure. The outer surface of the pressure vessel 10 is moved, and the pull rod 3013 is loosened. The insertion rod 3010 is inserted into the corresponding slot 309 under the action of the spring 2 3011 to fix the position of the movable block 305, thereby completing the accurate fixation of the pressure vessel 10. The motor 202 is started to drive the screw 203 to rotate. The movable block 204 threadedly connected with the screw 203 moves along the screw 203 under the guidance of the guide rod 205, thereby driving the pressure vessel 10 on the connecting plate 301 to move horizontally to the bottom of the fixed cover 602. At this time, the multi-stage telescopic rod 601 is started, and the multi-stage telescopic rod 601 drives the fixed cover 602 to move until the bottom of the fixed cover 602 is tightly fitted with the top of the pressure vessel 10, and the pressure vessel 10 is firmly fixed between the connecting plate 301 and the fixed cover 602, thereby ensuring the stable position of the pressure vessel 10 in subsequent operations.

[0046] Then, the two limiting plates 803 on the outside of the fixed frame 802 are inserted into the inner wall of the limiting frame 806, so that the limiting hole 808 at the bottom of the fixed frame 802 is inserted into the inner wall of the limiting shell 807, and then the limiting rod 809 is inserted into the through hole of the limiting shell 807 and the inner wall of the limiting hole 808, and the locking plate 8010 is rotated to engage with the limiting rod 809 to complete the fixation. The spring 3 804 in the fixed frame 802 applies elastic force to the cleaning member 805, so that the cleaning member 805 is in close contact with the weld surface, and then the motor 2 502 is started to drive the connecting rod 503 to rotate, and the driving gear 504 on the connecting rod 503 rotates accordingly, and the driving gear 504 meshes with the toothed ring 506 on the outside of the fixed sleeve 505, driving the fixed sleeve 505 to rotate on the inner wall of the support frame 4, and then driving the side plate 2 801 to rotate, so that the weld is cleaned.

[0047] When the cleaning is completed, the locking plate 8010 is rotated to release the locking plate 8010 and the limiting rod 809, and then the limiting rod 809 is separated from the through hole of the limiting shell 807 and the inner wall of the limiting hole 808, and the limiting hole 808 is separated from the limiting shell 807, and the limiting plate 803 is taken out from the limiting frame 806, so that the fixed frame 802 is removed from the side plate 801.

[0048] The motor 3 702 is started to drive the screw 2 703 to rotate, so that the moving block 2 704 moves up and down. The moving block 2 704 drives the welding gun 706 to a suitable height position through the cylinder 705. The cylinder 705 works to push the welding gun 706 close to the annular seam of the pressure vessel 10. At this time, the motor 2 502 is started to drive the connecting rod 503 to rotate, and the driving gear 504 on the connecting rod 503 rotates accordingly. The driving gear 504 meshes with the toothed ring 506 on the outside of the fixed sleeve 505, driving the fixed sleeve 505 to rotate on the inner wall of the support frame 4, thereby driving the side plate 1 701 to rotate, and the welding gun 706 rotates around the pressure vessel 10 to complete the annular seam welding.

[0049] During welding, the fan 902 is started, and the generated smoke, under the action of the fan 902, enters the fixed shell 901 from the connecting cover 903 through the smoke removal pipe 904, and first passes through the filter 908 to filter out some impurities. The filtered smoke enters the water storage tank 907 through the connecting pipe 905. In this process, the activated carbon plate 906 in the connecting pipe 905 further absorbs harmful substances in the smoke, thereby achieving purification of the welding smoke and reducing the harm of the welding smoke to the environment and operators.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure vessel circumferential seam welding device, comprising a base (1), characterized in that: Both sides of the top of the base (1) are provided with moving mechanisms (2), the tops of the two moving mechanisms (2) are provided with positioning mechanisms (3), the tops of the positioning mechanisms (3) are provided with a pressure container (10), one side of the top of the base (1) is fixedly connected to a support frame (4), the top of the support frame (4) is fixedly connected to a support frame (401), a rotating mechanism (5) is provided on the outside of the support frame (401), a fixing mechanism (6) is provided on the bottom of the support frame (401), a welding mechanism (7) is provided on one side of the outside of the rotating mechanism (5), a cleaning structure (8) is provided on the other side of the outside of the rotating mechanism (5), and a smoke removal mechanism (9) is provided on the outside of the welding mechanism (7); The positioning mechanism (3) comprises a connecting plate (301), the through groove of the connecting plate (301) contacts the bottom of the pressure vessel (10), a special-shaped block (302) is fixedly connected to one side of the top of the connecting plate (301), a movable block (305) is slidably connected to the other side of the top of the connecting plate (301), two springs (304) are arranged between the special-shaped block (302) and the movable block (305), both sides of the outside of the special-shaped block (302) are fixedly connected to a positioning pin (303), one side of the outside of the movable block (305) is fixedly connected to a positioning pin (306), one end of the positioning pin (303) and the positioning pin (306) are in contact with the outside of the pressure vessel (10), and an adjustment component is arranged on the other side of the outside of the movable block (305), and the adjustment component is used to move the movable block (305).

2. A pressure vessel circumferential seam welding device according to claim 1, characterized in that: The adjustment component comprises a connecting plate (307), the outer side of the connecting plate (307) is fixedly connected to the other side of the outer side of the movable block (305), the two sides of the outer side of the connecting plate (307) are fixedly connected to fixed plates (308), the internal through hole of the fixed plate (308) is slidably connected to an insertion rod (3010), the outer side of the insertion rod (3010) is sleeved with a second spring (3011), the bottom of the second spring (3011) is fixedly connected to the top of the fixed plate (308), the top of the second spring (3011) is fixedly connected to a cross plate (3012), the top of the cross plate (3012) is fixedly connected to a pull rod (3013), the outer side of the pull rod (3013) is slidably connected to the internal through hole of the connecting plate (307), a plurality of slots (309) are provided on the other side of the top of the connecting plate (301), and the insertion rod (3010) is plugged into and matched with the slots (309).

3. A pressure vessel circumferential seam welding device according to claim 1, characterized in that: The fixing mechanism (6) comprises a multi-stage telescopic rod (601), the multi-stage telescopic rod (601) being mounted on the inner wall of the support frame (401), the output end of the multi-stage telescopic rod (601) being fixedly connected to a fixing cover (602), the bottom of the fixing cover (602) being in contact with the top of the pressure vessel (10).

4. A pressure vessel circumferential seam welding device according to claim 1, characterized in that: The rotating mechanism (5) comprises a fixed block (501) and a fixed sleeve (505); the top of the fixed block (501) is fixedly connected to the outside of the support frame (401); the bottom of the fixed block (501) is fixedly connected to the second motor (502); the output end of the second motor (502) is fixedly connected to a connecting rod (503); the bottom of the connecting rod (503) is rotatably connected to the top of the support frame (4); the outside of the connecting rod (503) is fixedly connected to a driving gear (504); the outside of the fixed sleeve (505) is rotatably connected to the inner wall of the support frame (4); the outside of the fixed sleeve (505) is fixedly connected to a gear ring (506); and the driving gear (504) is meshingly connected to the gear ring (506).

5. A pressure vessel circumferential seam welding device according to claim 1, characterized in that: The welding mechanism (7) comprises a side plate one (701), one end of the side plate one (701) is fixedly connected to an outer side of a fixing sleeve (505), the top of the side plate one (701) is fixedly connected to a motor three (702), the output end of the motor three (702) is fixedly connected to a screw rod two (703), the bottom of the screw rod two (703) is rotatably connected to the inner wall of the side plate one (701), the outer side of the screw rod two (703) is threadedly connected to a moving block two (704), the outer side of the moving block two (704) is fixedly connected to a cylinder (705), and the output end of the cylinder (705) is fixedly connected to a welding gun (706).

6. A pressure vessel circumferential seam welding device according to claim 1, characterized in that: The cleaning structure (8) comprises a second side plate (801) and a fixed frame (802), one end of the second side plate (801) being fixedly connected to the other side of the outside of the fixed sleeve (505), a plurality of third springs (804) being fixedly connected to the inner cavity of the fixed frame (802), one end of the third spring (804) being fixedly connected to a cleaning piece (805), and a fixing component being arranged on the outer side of the second side plate (801), the fixing component being used to fix the fixed frame (802).

7. A pressure vessel circumferential seam welding device according to claim 6, characterized in that: The fixing assembly comprises a limit frame (806), the outer sides of the two limit frames (806) are fixedly connected to the outer side of the second side plate (801), the bottom of the limit frame (806) is fixedly connected to a limit shell (807), the outer side of the limit shell (807) is rotatably connected to a lock plate (8010), the outer side of the fixed frame (802) is fixedly connected to two limit plates (803), the outer side of the limit plate (803) slides on the inner wall of the limit frame (806), the bottom of the fixed frame (802) is provided with a limit hole (808), the limit hole (808) is arranged on the inner wall of the limit shell (807), the through hole of the limit shell (807) and the inner wall of the limit hole (808) are plugged with a limit rod (809), and the lock plate (8010) is clamped with the limit rod (809).

8. A pressure vessel circumferential seam welding device according to claim 1, characterized in that: The smoke removal mechanism (9) comprises a fixed shell (901), the outer side of the fixed shell (901) is fixedly connected to the outer side of the side plate (701), a fan (902) is installed on the inner wall of the fixed shell (901), a connecting cover (903) is fixedly connected to the outer side of the fixed shell (901), a smoke removal pipe (904) is fixedly connected to the outer side of the connecting cover (903), a connecting pipe (905) is fixedly connected to the outer side of the fan (902), an activated carbon plate (906) is arranged on the outer side of the connecting pipe (905), a water storage tank (907) is arranged at the bottom of the fixed shell (901), and one end of the connecting pipe (905) is arranged inside the water storage tank (907).

9. A pressure vessel circumferential seam welding device according to claim 8, characterized in that: A filter screen (908) is provided between the fan (902) and the connection cover (903).

10. A pressure vessel circumferential seam welding device according to claim 1, characterized in that: The moving mechanism (2) comprises a mounting shell (201), the bottom of which is mounted on the top of the base (1), the outer side of the mounting shell (201) is fixedly connected to a motor (202), the output end of the motor (202) is fixedly connected to a screw (203), one end of which is rotatably connected to the inner wall of the mounting shell (201), the outer side of the screw (203) is threadedly connected to a moving block (204), the outer side of the moving block (204) is fixedly connected to the outer side of the connecting plate (301), the inner wall of the mounting shell (201) is fixedly connected to a guide rod (205), and the outer side of the guide rod (205) is slidably connected to the internal through hole of the moving block (204).

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