Connecting pipe welding device for vertical long shaft pump production

Abstract

The invention belongs to the technical field of workpiece welding, and particularly relates to a vertical long shaft pump production connecting pipe welding device which comprises a bearing part, a welding mechanism, a control mechanism, a supporting mechanism, a polishing and grinding mechanism and a sweeping mechanism. The bearing part comprises a workbench, a mounting plate and a bearing frame, and the mounting plate and the bearing frame are fixedly mounted on the upper end face of the workbench; the welding mechanism comprises a mounting disc and a welding head slidably mounted on the outer wall of the mounting disc, and the mounting disc is rotatably mounted on the side wall of the mounting plate; the control mechanism comprises a driving motor and a control pump, and controls the mounting disc to rotate through the driving motor; the supporting mechanism is used for supporting workpieces; the polishing and grinding mechanism comprises a grinding head and an adapter block, the adapter block is elastically mounted on the side wall of the mounting disc, the grinding head is rotatably mounted on one side of the adapter block, and the grinding head is controlled to rotate by controlling exhaust at the output end of the pump; the cleaning mechanism comprises a mounting cylinder and a suction hole; through the structural cooperation, the strict requirement for the connecting strength of the connecting pipe and the flange plate under the high-pressure and high-load working condition is met.

Description

Technical Field

[0001] This invention belongs to the field of workpiece welding technology, specifically a pipe welding device for the production of vertical long shaft pumps. Background Technology

[0002] As a core fluid transport device in water treatment, petrochemical, and power industries, the operational stability and structural connection strength of vertical long-shaft pumps directly affect the safe and efficient operation of the entire system. The connection between the nozzle and the flange is a critical load-bearing part of the vertical long-shaft pump, which must withstand combined loads such as medium pressure, axial tension, and operating vibration. Therefore, the welding quality of this part is crucial to the overall reliability of the equipment. To meet the requirements of high-pressure and high-load operating conditions, the industry generally adopts internal welding technology to connect the nozzle and the flange. This technology allows the weld to penetrate deep into the joint, greatly improving the sealing performance and structural strength of the connection, and avoiding the hidden dangers such as stress concentration and leakage that are prone to occur with external welding.

[0003] The internal welding area after the pipe fitting and flange are connected is located inside the pipe cavity. The space is narrow and the field of vision is limited. Impurities such as weld beads, spatter, weld slag and oxide scale generated during the welding process are very easy to adhere to the weld and the surrounding inner wall. Traditional cleaning tools (such as ordinary grinding heads and brushes) are difficult to penetrate into this area to achieve a complete cleaning. On the other hand, after the internal welding, the inner cavity of the pipe forms a closed or semi-closed space, and the cleaning operation lacks sufficient working space, resulting in the inability to completely remove residual impurities.

[0004] Relying on manual hand tools to reach into the pipes is not only labor-intensive and inefficient, but the cleaning effect is also greatly affected by the operator's skill, making it difficult to guarantee consistency and meet the strict requirements of large-scale production for welding quality and pipe cleanliness.

[0005] Therefore, the present invention provides a pipe welding device for the production of vertical long shaft pumps. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a vertical long shaft pump production pipe welding device according to the present invention, comprising a bearing part, a welding mechanism, a control mechanism, a support mechanism, a polishing mechanism and a cleaning mechanism;

[0008] The support unit includes a worktable, a mounting plate, and a support frame, with the mounting plate and support frame both fixedly installed on the upper surface of the worktable;

[0009] The welding mechanism includes a mounting plate and a welding head that is slidably mounted on the outer wall of the mounting plate. The mounting plate is rotatably mounted on the side wall of the mounting plate.

[0010] The control mechanism includes a drive motor and a control pump, which control the rotation of the mounting plate via the drive motor;

[0011] The support mechanism is used to support the workpiece;

[0012] The polishing mechanism includes a grinding head and an adapter block. The adapter block is elastically mounted on the side wall of the mounting plate, and the grinding head is rotatably mounted on one side of the adapter block. The rotation of the grinding head is controlled by venting air from the output end of the control pump.

[0013] The cleaning mechanism includes a mounting cylinder and a suction port. The mounting cylinder is located on the outer wall of the mounting plate, and the suction port is located on the outer wall of the mounting cylinder. The rotation of the mounting cylinder is controlled by suction from the input end of the control pump.

[0014] Preferably, the support mechanism includes a mounting rod, a top pressure plate, a platform, a sliding plate, and a top shaft;

[0015] One end of the mounting rod passes through the mounting plate and is fixedly connected to the outer wall of the support frame; the top pressure plate is movably set on the outer wall of the mounting rod.

[0016] The platform is fixedly installed on the upper surface of the workbench, the slide plate is slidably installed on the upper surface of the platform, and the top shaft is slidably installed on the side wall of the slide plate.

[0017] Preferably, an exhaust ring is fixedly installed on the side wall of the mounting plate, and a connecting ring is rotatably installed on the outer wall of the exhaust ring through a sealed bearing. The inner cavity of the adapter block is connected to the connecting ring through a hose.

[0018] An air intake ring is rotatably mounted on one side of the mounting plate, and an adapter ring is rotatably mounted on the outer wall of the air intake ring. The inner cavity of the mounting cylinder is connected to the inner cavity of the air intake ring.

[0019] The output end of the control pump is connected to the outer wall of the exhaust ring. A water tank is fixedly installed on the bottom surface of the workbench. A conduit extending below the liquid level in the inner cavity of the water tank is provided on the outer wall of the adapter ring. The input end of the control pump extends into the inner cavity of the water tank and is located above the liquid level in the inner cavity of the water tank.

[0020] Preferably, a control rod is fixedly installed on the outer wall of the support frame. The movable end of the control rod passes through the mounting rod and is fixedly installed with a transmission rod. A connecting plate is rotatably installed on the bottom surface of the top pressure plate. There are two connecting plates. One connecting plate is rotatably connected to the outer wall of the mounting rod, and the other connecting plate is fixedly connected to the outer wall of the transmission rod.

[0021] Preferably, a connecting cylinder is rotatably mounted on the outer wall of the adapter block, an air guide cylinder is slidably mounted on one end of the connecting cylinder, the other end of the air guide cylinder is fixedly connected to the outer wall of the grinding head, the inner wall of the connecting cylinder is elastically connected to the inner wall of the air guide cylinder, and an exhaust nozzle is fixedly mounted on the outer wall of the air guide cylinder, with the exhaust nozzle being inclined.

[0022] Preferably, an air guide pipe is fixedly installed on the inner wall of the air intake ring, and an installation cylinder is rotatably installed on the outer wall of the air guide pipe. The outer wall of the installation cylinder is provided with an installation groove for installing brush bristles. An axial flow impeller is rotatably installed in the inner cavity of the air guide pipe, and the axial end of the axial flow impeller is fixedly connected to the inner wall of the installation cylinder.

[0023] Preferably, the outer wall of the exhaust ring is provided with a pressure relief port, and the inner wall of the exhaust ring is elastically fitted with a conical plug for sealing the pressure relief port. A guide rod is fixedly installed on the bottom surface of the conical plug, and a sleeve is fixedly installed on the inner wall of the exhaust ring. One end of the guide rod extends to the inner wall of the sleeve and is slidably connected with the sleeve.

[0024] A top pressure rod is fixedly installed on the outer wall of the conical plug. One end of the top pressure rod extends to the outside of the exhaust ring. A transmission plate is fixedly installed on the outer wall of the mounting plate. The outer wall of the transmission plate is fixedly connected to the outer wall of the connecting ring. The outer wall of the intake ring is fixedly connected to the outer wall of the transmission plate. A top pressure block for pushing the top pressure rod is fixedly installed on the outer wall of the transmission plate.

[0025] A pressure relief nozzle is fixedly installed on the outer wall of the exhaust ring.

[0026] The beneficial effects of this invention are as follows:

[0027] 1. This invention, by incorporating a grinding head, an adapter block, and an mounting cylinder, allows the adapter block to elastically fit against the side wall of the mounting disc, ensuring the grinding head remains consistently in contact with the welding position inside the workpiece. This eliminates the need for manual operation into narrow cavities, enabling targeted polishing before and after welding. Before welding, it effectively removes impurities such as oxide scale and rust, preventing defects like porosity and slag inclusions. After welding, it precisely cleans weld beads, burrs, and minor defects, ensuring a smooth and flat inner wall of the pipe. Simultaneously, the mounting cylinder rotates synchronously with the mounting disc, and its outer wall suction holes efficiently extract polishing dust and welding fumes, simultaneously reducing the internal temperature of the workpiece. This completely solves the problems of incomplete coverage by traditional cleaning tools, residual impurities affecting welding quality, and the high intensity and uneven results of manual operation. It ensures the fusion contact area and sealing of the weld, meeting the stringent requirements for the connection strength of pipes and flanges under high pressure and high load conditions.

[0028] 2. This invention incorporates a transmission plate, an air guide cylinder, and a water tank. As the installation plate rotates, the transmission plate drives the top pressure block to push the top pressure rod, causing the exhaust ring's pressure relief port to repeatedly open and close. This drives the air guide cylinder, which in turn drives the grinding head to rotate while simultaneously sliding back and forth, forming a cross-shaped grinding trajectory. This results in more uniform and delicate grinding at the welding points, significantly improving surface roughness consistency. The airflow drive design of the air guide cylinder is linked with the water tank's filtration liquid, effectively capturing and cooling the extracted contaminants, preventing the diffusion of harmful gases and dust. This protects the operating environment and personnel health, and eliminates secondary dust contamination of the workpiece's inner wall. Furthermore, the grinding head's composite motion mode reduces hard contact loss between itself and the workpiece, and the water tank's cooling and filtration function reduces the impact of high temperatures on the core components of the equipment, further extending the overall lifespan of the device and pipelines, and improving the environmental friendliness and economy of the production process. Attached Figure Description

[0029] The invention will now be further described with reference to the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the installation of the top pressure plate in this invention;

[0032] Figure 3 This is a schematic diagram of the installation of the skateboard in this invention;

[0033] Figure 4 This is a schematic diagram of the installation disk in this invention;

[0034] Figure 5 This is a schematic diagram of the installation of the mounting cylinder in this invention;

[0035] Figure 6 This is a cross-sectional view of the mounting plate in this invention;

[0036] Figure 7 This is a schematic diagram of the installation of the top pressure block in this invention;

[0037] Figure 8 This is a schematic diagram of the installation of the exhaust nozzle in this invention;

[0038] Figure 9 This is a schematic diagram of the internal structure of the exhaust ring in this invention;

[0039] Figure 10 yes Figure 9 Enlarged view of a portion of point A in the middle.

[0040] In the diagram: 1. Workbench; 2. Transmission rod; 3. Welding head; 4. Inlet ring; 5. Mounting plate; 6. Drive motor; 7. Support frame; 8. Control rod; 9. Water tank; 10. Slide plate; 11. Mounting rod; 12. Mounting plate; 13. Control pump; 14. Top pressure plate; 15. Connecting plate; 16. Top shaft; 17. Platform; 18. Sleeve; 19. Exhaust ring; 20. Pressure relief nozzle; 21. Adapter ring; 22. Adapter block; 23. Air guide tube; 24. Grinding head; 25. Mounting cylinder; 26. Transmission plate; 27. Axial flow impeller; 28. Air guide pipe; 29. ​​Suction hole; 30. Mounting groove; 31. Top pressure block; 32. Connecting ring; 33. Exhaust nozzle; 34. Connecting cylinder; 35. Top pressure rod; 36. Conical plug; 37. Guide rod. Detailed Implementation

[0041] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0042] like Figures 1 to 10 As shown, the pipe welding device for the production of vertical long shaft pumps according to the present invention includes a bearing part, a welding mechanism, a control mechanism, a support mechanism, a polishing mechanism, and a cleaning mechanism.

[0043] The support unit includes a workbench 1, a mounting plate 12, and a support frame 7. The mounting plate 12 and the support frame 7 are both fixedly installed on the upper surface of the workbench 1. The workbench 1 is used to provide construction space for welding operations.

[0044] The welding mechanism includes a mounting plate 5 and a welding head 3 that is slidably mounted on the outer wall of the mounting plate 5. The mounting plate 5 is rotatably mounted on the side wall of the mounting plate 12. The support mechanism is used to support the workpiece. During welding, the workpiece (including flanges and pipes) is first fixed on one side of the mounting plate 5. Then, the position of the welding head 3 is adjusted to align with the welding position. Then, the welding head 3 is started and the mounting plate 5 is rotated to achieve welding of the inner wall of the workpiece.

[0045] The control mechanism includes a drive motor 6 and a control pump 13. The drive motor 6 controls the rotation of the mounting plate 5. The inner wall of the mounting plate 12 is provided with a meshing worm gear and worm. The drive motor 6 is fixedly installed on the outer wall of the mounting plate 12. The axial end of the worm is fixedly connected to the output shaft of the drive motor 6, and the axial end of the worm gear is fixedly connected to the outer wall of the mounting plate 5. This enables the rotation of the mounting plate 5 by the drive motor 6, thereby realizing the annular welding operation inside the workpiece.

[0046] The polishing mechanism includes a grinding head 24 and an adapter block 22. The adapter block 22 is elastically mounted on the side wall of the mounting plate 5. The side wall of the adapter block 22 slides against the side wall of the mounting plate 5. The grinding head 24 is rotatably mounted on one side of the adapter block 22. Through the elastic force received by the adapter block 22, the grinding head 24 tends to fit against the welding position inside the workpiece in real time.

[0047] The grinding head 24 rotates by controlling the exhaust from the output of pump 13. Before welding, the workpiece welding position is polished by the rotation of the grinding head 24, which effectively removes impurities such as oxide scale, rust, and oil from the welding surface, ensuring the cleanliness of the welding contact surface and preventing impurities from forming defects such as porosity and slag inclusions during the welding process. At the same time, the grinding head 24 can create a uniform rough surface at the welding position, increasing the fusion contact area when welding pipes and flanges, improving the bonding strength and sealing of the weld, and reducing the risk of leakage and cracking during later use. This enhances the stability and reliability of internal wall welding operations. To ensure smooth operation, after welding the inner wall of the workpiece, the grinding head 24 rotates to polish the weld area, which can accurately remove weld beads, spatter, and burrs at the weld, making the inner wall of the pipeline smooth and flat. This avoids resistance, media accumulation, or scratches to the transported media caused by inner wall protrusions during fluid transportation. At the same time, the grinding head 24 can grind and correct potential defects such as micro-cracks and pores on the weld surface, reduce the risk of weld corrosion, improve the appearance consistency and structural stability of the welded parts, ensure that the connection between the pipeline and the flange meets the subsequent use or installation standards, and extend the service life of the overall pipeline.

[0048] The cleaning mechanism includes a mounting cylinder 25 and a suction hole 29. The mounting cylinder 25 is set on the outer wall of the mounting plate 5. When the mounting plate 5 rotates, it drives the mounting cylinder 25 to rotate synchronously inside the workpiece. The suction hole 29 is opened on the outer wall of the mounting cylinder 25. After the mounting cylinder 25 is connected to the external negative pressure chamber, the air inside the workpiece is sucked out through the suction hole 29 to reduce the temperature inside the workpiece during polishing and welding. At the same time, it can also suck out the dust generated during polishing and welding and the fumes generated during welding.

[0049] By controlling the suction at the input end of the pump 13, the rotation of the mounting cylinder 25 can be adjusted, thereby increasing the suction range.

[0050] The support mechanism includes a mounting rod 11, a top pressure plate 14, a platform 17, a sliding plate 10, and a top shaft 16.

[0051] One end of the mounting rod 11 passes through the mounting plate 12 and is fixedly connected to the outer wall of the support frame 7. The top pressure plate 14 is movably disposed on the outer wall of the mounting rod 11. The outer wall of the mounting plate 5 has a through hole for the mounting rod 11 to pass through. Before welding, the pipe is first sleeved on the outer wall of the mounting rod 11, and then the position of the top pressure plate 14 is adjusted until the top pressure plate 14 presses down and supports the pipe.

[0052] The platform 17 is fixedly installed on the upper end face of the workbench 1, the slide plate 10 is slidably set on the upper end face of the platform 17, and the top shaft 16 is slidably installed on the side wall of the slide plate 10. Before welding, the flange is inserted into the slide plate 10, and then the top shaft 16 (the top shaft 16 is a screw) is slidably adjusted to press and clamp the flange. Finally, the height of the slide plate 10 is adjusted until the flange and the pipe are aligned to facilitate subsequent welding operations.

[0053] In a preferred embodiment of the present invention, an exhaust ring 19 is fixedly installed on the side wall of the mounting plate 12. A connecting ring 32 is rotatably installed on the outer wall of the exhaust ring 19 through a sealed bearing. The inner cavity of the adapter block 22 is connected to the connecting ring 32 through a hose. When the mounting plate 5 rotates, it drives the adapter block 22 to rotate synchronously. At this time, by setting the connecting ring 32, the connection with the inner cavity of the exhaust ring 19 can be maintained when the adapter block 22 rotates.

[0054] An air intake ring 4 is rotatably mounted on one side of the mounting plate 5. An adapter ring 21 is rotatably mounted on the outer wall of the air intake ring 4. The inner cavity of the mounting cylinder 25 is connected to the inner cavity of the air intake ring 4, connecting the external negative pressure chamber to the adapter ring 21. Thus, when the mounting cylinder 25 and the mounting plate 5 rotate synchronously, the connection with the negative pressure chamber is maintained.

[0055] The output end of the control pump 13 is connected to the outer wall of the exhaust ring 19, and exhausts gas toward the inner cavity of the exhaust ring 19 when the control pump 13 is working.

[0056] A water tank 9 is fixedly installed on the bottom surface of the workbench 1. The water tank 9 stores filtrate. The outer wall of the adapter ring 21 is provided with a conduit extending to below the liquid level in the inner cavity of the water tank 9. The input end of the control pump 13 extends to the inner cavity of the water tank 9 and is located above the liquid level in the inner cavity of the water tank 9. When the control pump 13 is working, a negative pressure is formed in the inner cavity of the water tank 9. The dust and smoke sucked by the mounting cylinder 25 enter the water tank 9 and come into contact with the filtrate, thereby achieving the capture of solid particles and the cooling of the gas.

[0057] A control rod 8 is fixedly installed on the outer wall of the support frame 7. The control rod 8 is a common hydraulic rod. The movable end of the control rod 8 passes through the mounting rod 11 and is fixedly installed with the transmission rod 2. The sliding of the transmission rod 2 is controlled by the control rod 8.

[0058] A connecting plate 15 is rotatably mounted on the bottom surface of the top pressure plate 14. There are two connecting plates 15. One connecting plate 15 is rotatably connected to the outer wall of the mounting rod 11, and the other connecting plate 15 is fixedly connected to the outer wall of the transmission rod 2. When the transmission rod 2 slides, the top pressure plate 14 is controlled to slide through the connecting plate 15 so as to support and fix the pipeline.

[0059] A connecting cylinder 34 is rotatably mounted on the outer wall of the adapter block 22, and the outer wall of the connecting cylinder 34 is connected to the adapter block 22 through a sealed bearing.

[0060] One end of the connecting cylinder 34 is slidably mounted with an air guide cylinder 23, and the other end of the air guide cylinder 23 is fixedly connected to the outer wall of the grinding head 24, thereby realizing the connection between the grinding head 24 and the adapter block 22.

[0061] The inner wall of the connecting cylinder 34 is elastically connected to the inner wall of the air guide cylinder 23. An exhaust nozzle 33 is fixedly installed on the outer wall of the air guide cylinder 23. The exhaust nozzle 33 is inclined. When the control pump 13 is working, the air pressure in the inner cavity of the adapter block 22 increases and is then discharged through the exhaust nozzle 33. The reverse thrust is used to control the rotation of the air guide cylinder 23 and the grinding head 24 to achieve grinding of the workpiece.

[0062] In a preferred embodiment of the present invention, an air guide pipe 28 is fixedly installed on the inner wall of the air intake ring 4, and an mounting cylinder 25 is rotatably installed on the outer wall of the air guide pipe 28, with the inner cavity of the air guide pipe 28 and the mounting cylinder 25 connected.

[0063] An axial flow impeller 27 is rotatably mounted inside the air guide pipe 28. The axial end of the axial flow impeller 27 is fixedly connected to the inner wall of the mounting cylinder 25. When the control pump 13 is working, the airflow drives the axial flow impeller 27 to rotate, thereby driving the mounting cylinder 25 to rotate and adjusting the suction angle. At the same time, the outer wall of the mounting cylinder 25 is provided with a mounting groove 30 for mounting the brush bristles. When the mounting cylinder 25 rotates, it drives the brush bristles to rotate, thereby cleaning the inside of the pipe and further improving the quality of cleaning before and after welding of the workpiece.

[0064] The outer wall of the exhaust ring 19 is provided with a pressure relief port, and the inner wall of the exhaust ring 19 is elastically fitted with a conical plug 36 for sealing the pressure relief port. A spring is provided at the bottom of the conical plug 36, and the other end of the spring is fixedly connected to the inner wall of the exhaust ring 19.

[0065] A guide rod 37 is fixedly installed on the bottom surface of the conical plug 36, and a sleeve 18 is fixedly installed on the inner wall of the exhaust ring 19. One end of the guide rod 37 extends to the inner wall of the sleeve 18 and is slidably connected with the sleeve 18. The sliding connection between the guide rod 37 and the sleeve 18 improves the stability of the sliding of the conical plug 36.

[0066] A top pressure rod 35 is fixedly installed on the outer wall of the conical plug 36. One end of the top pressure rod 35 extends to the outside of the exhaust ring 19. A transmission plate 26 is fixedly installed on the outer wall of the mounting plate 5. A top pressure block 31 for pushing the top pressure rod 35 is fixedly installed on the outer wall of the transmission plate 26. When the mounting plate 5 rotates, the transmission plate 26 drives the top pressure block 31 to rotate. The side wall of the top pressure block 31 is inclined. When the top pressure block 31 pushes the top pressure rod 35, the pressure relief port on the outer wall of the exhaust ring 19 is opened. At this time, part of the gas in the inner cavity of the exhaust ring 19 is discharged through the pressure relief port. Then, in the process of the pressure relief port opening and closing repeatedly, the gas pressure in the inner cavity of the air guide cylinder 23 is repeatedly adjusted, resulting in... While the air guide cylinder 23 and the grinding head 24 rotate along their own axis, they also slide back and forth to form a cross-shaped grinding trajectory. This avoids the regular patterns produced by single rotation, making the grinding of the welded position between the pipe and the flange more uniform, without local missed grinding or over-grinding. At the same time, it greatly expands the grinding coverage area and enhances the cutting force, which can remove weld beads, impurities or minor defects more quickly, improve grinding efficiency, shorten processing time, and make the surface roughness after grinding more consistent, delicate and smooth. This reduces fluid transport resistance and also reduces the hard contact loss between the grinding head 24 and the workpiece, extending the service life of the grinding head 24 and providing a more reliable surface foundation for the subsequent use of the pipeline.

[0067] When the control pump 13 is working, the external pressure relief port of the control exhaust ring 19 is repeatedly opened and closed. At this time, the input end of the control pump 13 maintains a constant air intake, thereby maintaining the suction force of the mounting cylinder 25.

[0068] The outer wall of the transmission plate 26 is fixedly connected to the outer wall of the connecting ring 32, and the outer wall of the air intake ring 4 is fixedly connected to the outer wall of the transmission plate 26. Thus, when the mounting plate 5 rotates, it drives the connecting ring 32 to rotate synchronously, so as to control the rotation of the mounting cylinder 25.

[0069] The outer wall of the exhaust ring 19 is fixedly equipped with a pressure relief nozzle 20. When only the installation cylinder 25 needs to be rotated to clean the inner wall of the workpiece, the pressure relief nozzle 20 is opened. At this time, only a small part of the gas in the inner cavity of the exhaust ring 19 enters the adapter block 22, and most of it is discharged through the pressure relief nozzle 20, thereby realizing the separate cleaning operation inside the workpiece.

[0070] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0071] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0072] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe welding device for the production of vertical long-shaft pumps, characterized in that: It includes a load-bearing component, welding mechanism, control mechanism, support mechanism, polishing mechanism, and cleaning mechanism; The supporting part includes a workbench (1), a mounting plate (12) and a support frame (7), and the mounting plate (12) and the support frame (7) are both fixedly installed on the upper surface of the workbench (1); The welding mechanism includes a mounting plate (5) and a welding head (3) that is slidably mounted on the outer wall of the mounting plate (5). The mounting plate (5) is rotatably mounted on the side wall of the mounting plate (12). The control mechanism includes a drive motor (6) and a control pump (13), and the drive motor (6) controls the rotation of the mounting plate (5); The support mechanism is used to support the workpiece; The polishing mechanism includes a grinding head (24) and a transfer block (22). The transfer block (22) is elastically mounted on the side wall of the mounting plate (5). The grinding head (24) is rotatably mounted on one side of the transfer block (22). The grinding head (24) is rotated by controlling the exhaust of the output end of the control pump (13). The cleaning mechanism includes an installation cylinder (25) and a suction hole (29). The installation cylinder (25) is located on the outer wall of the installation plate (5), and the suction hole (29) is located on the outer wall of the installation cylinder (25). The installation cylinder (25) is rotated by suction control at the input end of the control pump (13).

2. The pipe welding device for producing a vertical long-shaft pump according to claim 1, characterized in that: The support mechanism includes a mounting rod (11), a top pressure plate (14), a platform (17), a sliding plate (10), and a top shaft (16). One end of the mounting rod (11) passes through the mounting plate (12) and is fixedly connected to the outer wall of the support frame (7), and the top pressure plate (14) is movably disposed on the outer wall of the mounting rod (11); The platform (17) is fixedly installed on the upper surface of the workbench (1), the slide plate (10) is slidably disposed on the upper surface of the platform (17), and the top shaft (16) is slidably installed on the side wall of the slide plate (10).

3. The pipe welding device for producing a vertical long-shaft pump according to claim 2, characterized in that: An exhaust ring (19) is fixedly installed on the side wall of the mounting plate (12). A connecting ring (32) is rotatably installed on the outer wall of the exhaust ring (19) through a sealed bearing. The inner cavity of the adapter block (22) is connected to the connecting ring (32) through a hose. An air intake ring (4) is rotatably provided on one side of the mounting plate (5), and an adapter ring (21) is rotatably installed on the outer wall of the air intake ring (4). The inner cavity of the mounting cylinder (25) is connected to the inner cavity of the air intake ring (4). The output end of the control pump (13) is connected to the outer wall of the exhaust ring (19). A water tank (9) is fixedly installed on the bottom surface of the workbench (1). A conduit extending to the inner cavity of the water tank (9) is provided on the outer wall of the adapter ring (21). The input end of the control pump (13) extends to the inner cavity of the water tank (9) and is located above the inner cavity of the water tank (9).

4. The pipe welding device for producing a vertical long-shaft pump according to claim 3, characterized in that: A control rod (8) is fixedly installed on the outer wall of the support frame (7). The movable end of the control rod (8) passes through the mounting rod (11) and is fixedly installed with a transmission rod (2). A connecting plate (15) is rotatably installed on the bottom surface of the top pressure plate (14). There are two connecting plates (15). One of the connecting plates (15) is rotatably connected to the outer wall of the mounting rod (11), and the other connecting plate (15) is fixedly connected to the outer wall of the transmission rod (2).

5. The pipe welding device for producing a vertical long-shaft pump according to claim 4, characterized in that: The outer wall of the adapter block (22) is rotatably mounted with a connecting cylinder (34). One end of the connecting cylinder (34) is slidably mounted with an air guide cylinder (23). The other end of the air guide cylinder (23) is fixedly connected to the outer wall of the grinding head (24). The inner wall of the connecting cylinder (34) is elastically connected to the inner wall of the air guide cylinder (23). The outer wall of the air guide cylinder (23) is fixedly mounted with an exhaust nozzle (33). The exhaust nozzle (33) is inclined.

6. The pipe welding device for producing a vertical long-shaft pump according to claim 5, characterized in that: An air guide pipe (28) is fixedly installed on the inner wall of the air intake ring (4). The mounting cylinder (25) is rotatably installed on the outer wall of the air guide pipe (28). The outer wall of the mounting cylinder (25) is provided with a mounting groove (30) for mounting brush bristles. An axial flow impeller (27) is rotatably installed in the inner cavity of the air guide pipe (28). The axial end of the axial flow impeller (27) is fixedly connected to the inner wall of the mounting cylinder (25).

7. The pipe welding device for producing a vertical long-shaft pump according to claim 6, characterized in that: The outer wall of the exhaust ring (19) is provided with a pressure relief port, and the inner wall of the exhaust ring (19) is elastically fitted with a conical plug (36) for sealing the pressure relief port. A guide rod (37) is fixedly installed on the bottom surface of the conical plug (36), and a sleeve (18) is fixedly installed on the inner wall of the exhaust ring (19). One end of the guide rod (37) extends to the inner wall of the sleeve (18) and is slidably connected with the sleeve (18). A top pressure rod (35) is fixedly installed on the outer wall of the conical plug (36). One end of the top pressure rod (35) extends to the outside of the exhaust ring (19). A transmission plate (26) is fixedly installed on the outer wall of the mounting plate (5). The outer wall of the transmission plate (26) is fixedly connected to the outer wall of the connecting ring (32). The outer wall of the intake ring (4) is fixedly connected to the outer wall of the transmission plate (26). A top pressure block (31) for pushing the top pressure rod (35) is fixedly installed on the outer wall of the transmission plate (26). The outer wall of the exhaust ring (19) is fixedly fitted with a pressure relief nozzle (20).

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