A sewage pipe welding device for sewage treatment

Abstract

The present invention belongs to the technical field of sewage pipe welding equipment, and in particular, relates to a sewage pipe welding device for sewage treatment, comprising a base plate, the top of which is fixedly embedded with a pipe support mechanism and two first threaded rods, the rod walls of the two first threaded rods are both threadedly sleeved with a first grounding ring, and the tops of the two first threaded rods are commonly fixedly connected with an L-shaped base. The present invention enables the sewage pipe welding device to not only have the function of automatic and precise positioning and alignment of the flange and the sewage pipe, but also has the functions of automatic blowing of impurities from the welding seam, micro-deformation detection of the side end of the sewage pipe, automatic rotation welding of the flange and the sewage pipe, and welding quality detection, which can not only reduce the labor intensity of the staff, but also effectively improve the quality, convenience and efficiency of the welding between the flange and the sewage pipe, and can improve the reliability and stability of the sewage pipe welding device in practical applications.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage pipe welding equipment, and in particular relates to a sewage pipe welding device for sewage treatment. Background Art

[0002] Pipeline connection refers to connecting prefabricated pipe sections into a complete system in accordance with the requirements of the design drawings. During construction, different connection methods should be selected according to the material of the pipe used. Ordinary steel pipes have threaded connections, flange connections, welding connections, socket connections, pipe bonding connections and other methods. In sewage treatment projects, welding flanges are required when connecting sewage pipes, and corresponding welding equipment is required during the welding process to improve the convenience of welding. For example, the authorization announcement number is CN216151532U, which discloses a sewage pipe welding device for sewage treatment.

[0003] When the existing sewage pipe welding device is in operation, there are many manual auxiliary links. For example, the alignment and positioning of the flange and the sewage pipe rely on manual operation of the staff, and during the welding process, the rotation of the flange and the sewage pipe needs to be manually controlled to ensure that the welding equipment can achieve complete welding. However, a large amount of manual intervention not only increases the workload of the staff, but also hinders the convenience and efficiency of welding the flange and the sewage pipe.

[0004] In addition, after the existing sewage pipe welding device completes the welding operation between the flange and the sewage pipe, it has to rely on other detection equipment or use manual visual inspection to check the welding point due to its lack of welding quality detection function. However, other detection equipment is often complicated to operate and has cumbersome procedures, which brings many inconveniences to the detection work. Manual visual inspection has large errors and it is difficult to find those subtle defects, which can easily cause leakage problems during the use of the sewage pipe. This will affect the welding quality of the flange and the sewage pipe, and then affect the reliability and stability of the sewage pipe welding device in actual applications.

[0005] Therefore, we propose a sewage pipe welding device for sewage treatment to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a sewage pipe welding device for sewage treatment in view of the above problems.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a sewage pipe welding device for sewage treatment, comprising a bottom plate, a pipe support mechanism and two first threaded rods are fixedly embedded on the top of the bottom plate, the rod walls of the two first threaded rods are both threadedly sleeved with a first grounding ring, the tops of the two first threaded rods are commonly fixedly connected to an L-shaped base, a first electric push rod is fixedly embedded in the vertical portion of the L-shaped base, a hollow shell is fixedly connected to the moving end of the first electric push rod, two rollers are fixedly connected to the bottom end of the hollow shell, two transverse guide grooves are provided on the outer wall of the horizontal portion of the L-shaped base, and the bottom ends of the rollers are in rolling contact with the groove walls of the transverse guide grooves;

[0008] A flange support mechanism is fixedly embedded on the top of the bottom plate;

[0009] The outer walls of both sides of the hollow shell are provided with circular holes, and the hole walls of the circular holes are fixedly connected to sealed bearings, the inner ring inner walls of the sealed bearings are jointly fixedly connected to a hollow rod, the outer wall of the hollow rod located inside the hollow shell is provided with an air intake hole, and the outer wall of the hollow shell is fixedly connected to a driving mechanism for rotating the hollow rod;

[0010] An air intake mechanism is fixedly connected to the upper surface of the hollow shell;

[0011] The rod wall of the hollow rod is fixedly sleeved with a first sealing mechanism and a second sealing mechanism, and the outer wall of the hollow rod located between the first sealing mechanism and the second sealing mechanism is fixedly embedded with a first normally closed electromagnetic valve and an air pressure sensor;

[0012] A welding seam detection mechanism is fixedly connected to the top side wall of the hollow shell.

[0013] In the above-mentioned sewage pipe welding device for sewage treatment, the pipe support mechanism includes four second threaded rods fixedly embedded in the base plate, the rod walls of the four second threaded rods are threadedly sleeved with a second grounding ring, the top ends of the four second threaded rods are commonly fixedly connected to an arc-shaped support plate, the outer wall of the arc-shaped support plate is fixedly connected to a plurality of U-shaped rods, and the rod walls of the U-shaped rods are connected to a support tube via a rolling bearing.

[0014] In the above-mentioned sewage pipe welding device for sewage treatment, the flange support mechanism includes a second electric push rod fixedly embedded in the base plate, the top end of the second electric push rod is fixedly connected with an arc block, the inner wall of the arc block is fixedly embedded with a plurality of universal ball bearings, and the outer wall of the arc block is in active contact with the side wall of the arc support plate.

[0015] In the above-mentioned sewage pipe welding device for sewage treatment, the driving mechanism includes a motor and a PLC controller fixedly connected to the outer wall of the hollow shell, the output end of the motor is fixedly connected to a helical gear, and the rod wall of the hollow rod is fixedly sleeved with a helical gear ring meshing with the helical gear.

[0016] In the above-mentioned sewage pipe welding device for sewage treatment, the air intake mechanism includes an air pump fixedly connected to the upper surface of the hollow shell, the air outlet end of the air pump is fixedly connected to a pipe joint, the air outlet end of the pipe joint passes through the top inner wall of the hollow shell, the air inlet end of the air pump is fixedly sleeved with a filter cartridge, the inner wall of the filter cartridge is threadedly connected with a sealing ring, the inner wall of the sealing ring is fixedly connected with an L-shaped air inlet pipe, the inner wall of the sealing ring is movably connected with a filter mesh cartridge, the inner wall of the filter mesh cartridge is fixedly connected with a filter cloth sleeve, the inner wall of the filter cloth sleeve is filled with an activated carbon adsorption layer, and the inner wall of the sealing ring is fixedly connected with a mesh block for blocking the activated carbon adsorption layer.

[0017] In the above-mentioned sewage pipe welding device for sewage treatment, the first sealing mechanism includes a hollow disk fixedly sleeved with the outer wall of the hollow rod, the side wall of the hollow disk is provided with an exhaust hole, the outer wall of the hollow disk is fixedly sleeved with an annular elastic rubber cover, the rod wall of the hollow rod located inside the hollow disk is fixedly connected with a second normally closed solenoid valve, the outer wall of the annular elastic rubber cover is provided with a sealing groove, the groove wall of the sealing groove is fixedly sleeved with two elastic sealing rings, the outer walls of both sides of the annular elastic rubber cover are bonded with multiple reinforcing rubber strips by elastic glue, the outer wall of the reinforcing rubber strip is fixedly connected to the outer wall of the hollow disk, and the structure of the second sealing mechanism is consistent with the structure of the first sealing mechanism.

[0018] In the above-mentioned sewage pipe welding device for sewage treatment, the welding seam detection mechanism includes an arc-shaped mounting plate fixedly connected to the top side wall of the hollow shell, the bottom end of the arc-shaped mounting plate is fixedly connected to a placement ring for supporting the welding clamp, the top of the arc-shaped mounting plate is fixedly embedded with a third electric push rod, the bottom end of the third electric push rod is fixedly connected to a connecting cover, the top inner wall of the connecting cover is fixedly connected to a hot wire wind speed sensor, the outer wall of the hollow disk of the first sealing mechanism is fixedly connected to two U-shaped baffles, one of the U-shaped baffles is opened on the outer wall with a fixed through hole, and the hole wall of the fixed through hole is fixedly connected to a push switch in contact with the outer wall of the flange.

[0019] In the above-mentioned sewage pipe welding device for sewage treatment, the outer wall of the arc-shaped support plate is fixedly connected to two connecting ropes, and the outer walls of the two connecting ropes are commonly fixedly connected to multiple pipe auxiliary support mechanisms, and the structures of the multiple pipe auxiliary support mechanisms are consistent with the structure of the pipe support mechanism.

[0020] In the above-mentioned sewage pipe welding device for sewage treatment, a connecting through hole is provided at the outer end of the hollow rod, and a conductive slip ring is fixedly connected to the hole wall of the connecting through hole, and a sealing block is fixedly connected to the inner wall of the hollow rod, and a plurality of threading holes that are sealed with the outer wall of the wire in the conductive slip ring are provided on the outer wall of the sealing block.

[0021] Compared with the existing technology, the advantages of a sewage pipe welding device for sewage treatment are:

[0022] 1. Through the set pipeline support mechanism, pipeline auxiliary support mechanism, air intake mechanism, first sealing mechanism and second sealing mechanism, when it is necessary to weld a flange on the sewage pipe, firstly, the device is arranged stably through the first threaded rod, the first power ring, the pipeline support mechanism and the pipeline auxiliary support mechanism, and then the position of the flange is adjusted through the flange support mechanism so that the flange position is initially matched with the sewage pipe, which not only facilitates the subsequent precise positioning of the flange and the sewage pipe, but also facilitates the insertion of the first sealing mechanism and the second sealing mechanism. At the same time, the hollow shell is pushed close to the sewage pipe by the first electric push rod, and the first sealing mechanism is located inside the flange, and the second sealing mechanism is located inside the sewage pipe, and finally the air intake mechanism is used to weld the flange. The structure enables the first sealing mechanism and the second sealing mechanism to work. After the annular elastic rubber cover in the first sealing mechanism and the second sealing mechanism is expanded by air, it can not only seal and position the flange and the inner wall of the sewage pipe, but also effectively guide the flange and the sewage pipe to move and adjust the position, and finally realize the concentric arrangement of the two centers of the flange and the sewage pipe on the same horizontal straight line. This mechanism enables the sewage pipe welding device to have the function of automatic and precise positioning and alignment of the flange and the sewage pipe, which can not only reduce the labor intensity of the staff, but also improve the convenience and efficiency of welding the flange and the sewage pipe, and the automatic and precise positioning and alignment can effectively reduce operating errors and improve the reliability of the use of the sewage pipe welding device.

[0023] 2. Through the set air intake mechanism, the first sealing mechanism, the second sealing mechanism and the hot wire wind speed sensor, when the device is welding the sewage pipe and the flange, the flange and the sewage pipe are first driven to rotate through the driving mechanism, the hollow rod, the first sealing mechanism and the second sealing mechanism. During the rotation process, not only the impurities attached to the connection between the flange and the sewage pipe are blown off by the air intake mechanism and the hot wire wind speed sensor, but also the micro-deformation caused by the collision of the side end of the sewage pipe can be detected to avoid the micro-deformation interfering with the welding quality. After maintenance, the welding clamp of the welding equipment is placed on the placement ring, and the support provided by the placement ring is used to reduce the labor intensity of welding, and the welding equipment can automatically perform ring welding on the rotating flange and sewage pipe. This mechanism enables the sewage pipe welding device to not only have the functions of automatically blowing off impurities from the welding seam and detecting micro-deformation of the side end of the sewage pipe, but also has the ability of automatic rotation welding of the flange and the sewage pipe, which can effectively improve the quality, convenience and efficiency of welding between the flange and the sewage pipe, while reducing the labor intensity of the staff, thereby improving the reliability and stability of the sewage pipe welding device.

[0024] 3. Through the set air intake mechanism, air pressure sensor and air intake mechanism, when the flange and the sewage pipe are welded, air is injected into the sealed cavity between the flange and the sewage pipe for 30 seconds, and the first normally closed solenoid valve is closed after 30 seconds, and the air pressure value P1 at this time is recorded by the air pressure sensor. After 2 minutes, the PLC controller records the air pressure value P2 transmitted by the air pressure sensor in the form of an electrical signal. If the air pressure values ​​of P1 and P2 are consistent, the welding quality of the flange and the sewage pipe is excellent, which can ensure the continuous use of the sewage pipe without hidden dangers. If the difference between P1 and P2 exceeds the allowable error, it means that the welding quality between the flange and the sewage pipe is unqualified, there is a leakage location, and subsequent maintenance is required. This mechanism enables the sewage pipe welding device to have the function of welding quality detection, which not only does not require cumbersome detection by other detection equipment, but also can avoid large errors in manual detection, effectively ensure the welding quality of the flange and the sewage pipe, and can improve the reliability and stability of the sewage pipe welding device in practical applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a sewage pipe welding device for sewage treatment provided by the present invention;

[0026] Figure 2 It is a structural schematic diagram of a partial cross-section of a sewage pipe welding device for sewage treatment provided by the present invention;

[0027] Figure 3 yes Figure 2 A schematic diagram of the partially enlarged structure;

[0028] Figure 4It is a schematic diagram of the structure inside the filter cartridge in a sewage pipe welding device for sewage treatment provided by the present invention;

[0029] Figure 5 It is a structural schematic diagram of a first sealing mechanism in a sewage pipe welding device for sewage treatment provided by the present invention;

[0030] Figure 6 It is a structural schematic diagram of a side view of a hollow disk portion of a sewage pipe welding device for sewage treatment provided by the present invention;

[0031] Figure 7 The present invention is a schematic structural diagram of a pipe supporting mechanism in a sewage pipe welding device for sewage treatment.

[0032] In the figure: 1 bottom plate, 2 first threaded rod, 3 pipeline support mechanism, 31 second threaded rod, 32 second grounding ring, 33 arc support plate, 34 U-shaped rod, 35 support tube, 4 first grounding ring, 5 flange support mechanism, 51 second electric push rod, 52 arc block, 53 universal ball, 6 driving mechanism, 61 motor, 62 PLC controller, 63 helical gear, 64 helical gear ring, 7 air intake mechanism, 71 air pump, 72 pipe joint, 73 filter tube, 74 sealing ring, 75 L-shaped air intake pipe, 76 filter mesh tube, 77 filter cloth sleeve, 78 activated carbon adsorption layer, 79 mesh block, 8 first sealing mechanism, 81 hollow disk, 82 row air hole, 83 annular elastic rubber cover, 84 second normally closed solenoid valve, 85 sealing groove, 86 elastic sealing ring, 87 reinforced rubber strip, 9 welding seam detection mechanism, 91 arc-shaped mounting plate, 92 placement ring, 93 third electric push rod, 94 connecting cover, 95 hot wire wind speed sensor, 96 push switch, 97 U-shaped baffle, 10 L-shaped base, 11 first electric push rod, 12 hollow shell, 13 roller, 14 sealed bearing, 15 hollow rod, 16 air inlet hole, 17 second sealing mechanism, 18 first normally closed solenoid valve, 19 air pressure sensor, 20 connecting rope, 21 pipeline auxiliary support mechanism, 22 conductive slip ring, 23 sealing block. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figure 1-Figure 7As shown, a sewage pipe welding device for sewage treatment includes a base plate 1, a pipe support mechanism 3 and two first threaded rods 2 are fixedly embedded on the top of the base plate 1, the pipe support mechanism 3 includes four second threaded rods 31 fixedly embedded with the base plate 1, the rod walls of the four second threaded rods 31 are all threadedly sleeved with second grounding rings 32, the tops of the four second threaded rods 31 are commonly fixedly connected to an arc-shaped support plate 33, the outer wall of the arc-shaped support plate 33 is fixedly connected to a plurality of U-shaped rods 34, the rod wall of the U-shaped rod 34 is connected to a support cylinder 35 through a rolling bearing, the outer wall of the arc-shaped support plate 33 is fixedly connected to two connecting ropes 20, and the outer walls of the two connecting ropes 20 are commonly fixedly connected to a plurality of pipe auxiliary support mechanisms 21 The structures of the multiple pipeline auxiliary support mechanisms 21 are consistent with the structure of the pipeline support mechanism 3. The cooperation of the multiple pipeline auxiliary support mechanisms 21 can ensure the horizontality of the sewage pipe and ensure that the sewage pipe can be easily rotated. The rod walls of the two first threaded rods 2 are threadedly sleeved with the first grounding ring 4. The tops of the two first threaded rods 2 are commonly fixedly connected with an L-shaped base 10. The vertical part of the L-shaped base 10 is fixedly embedded with a first electric push rod 11. The moving end of the first electric push rod 11 is fixedly connected with a hollow shell 12. The bottom end of the hollow shell 12 is fixedly connected with two rollers 13. The outer wall of the horizontal part of the L-shaped base 10 is provided with two transverse guide grooves, and the bottom end of the roller 13 is in rolling contact with the groove wall of the transverse guide groove.

[0035] A flange supporting mechanism 5 is fixedly embedded at the top of the base plate 1, and the flange supporting mechanism 5 includes a second electric push rod 51 fixedly embedded with the base plate 1, and an arc block 52 is fixedly connected to the top of the second electric push rod 51. A plurality of universal balls 53 are fixedly embedded on the inner wall of the arc block 52, and the outer wall of the arc block 52 is in active contact with the side wall of the arc supporting plate 33. This mechanism can facilitate the precise positioning and alignment of the flange and the sewage pipe, thereby improving the convenience and efficiency of welding the flange and the sewage pipe.

[0036] Circular holes are provided on the outer walls on both sides of the hollow shell 12, and a sealed bearing 14 is fixedly connected to the hole wall of the circular hole, a hollow rod 15 is fixedly connected to the inner wall of the inner ring of the sealed bearing 14, an air intake hole 16 is provided on the outer wall of the hollow rod 15 located inside the hollow shell 12, and a driving mechanism 6 for rotating the hollow rod 15 is fixedly connected to the outer wall of the hollow shell 12. The driving mechanism 6 includes a motor 61 and a PLC controller 62 fixedly connected to the outer wall of the hollow shell 12, a bevel gear 63 is fixedly connected to the output end of the motor 61, and a bevel gear ring 64 meshing with the bevel gear 63 is fixedly sleeved on the rod wall of the hollow rod 15.

[0037] An air intake mechanism 7 is fixedly connected to the upper surface of the hollow shell 12, and the air intake mechanism 7 includes an air pump 71 fixedly connected to the upper surface of the hollow shell 12, and the air outlet end of the air pump 71 is fixedly connected to a pipe joint 72, and the air outlet end of the pipe joint 72 passes through the inner wall of the top end of the hollow shell 12, and the air inlet end of the air pump 71 is fixedly sleeved with a filter cartridge 73, and the inner wall of the filter cartridge 73 is threadedly connected with a sealing ring 74, and the inner wall of the sealing ring 74 is fixedly connected with an L-shaped air intake pipe 75, and the inner wall of the sealing ring 74 is movably connected with a filter mesh cartridge 76, and the inner wall of the filter mesh cartridge 76 is fixedly connected with a filter cloth sleeve 77, and the inner wall of the filter cloth sleeve 77 is filled with an activated carbon adsorption layer 78, and the inner wall of the sealing ring 74 is fixedly connected with a mesh block 79 for blocking the activated carbon adsorption layer 78.

[0038] The rod wall of the hollow rod 15 is fixedly sleeved with the first sealing mechanism 8 and the second sealing mechanism 17, and the outer wall of the hollow rod 15 located between the first sealing mechanism 8 and the second sealing mechanism 17 is fixedly embedded with a first normally closed solenoid valve 18 and an air pressure sensor 19. The first sealing mechanism 8 includes a hollow disk 81 fixedly sleeved with the outer wall of the hollow rod 15, and the side wall of the hollow disk 81 is provided with an exhaust hole 82, and the outer wall of the hollow disk 81 is fixedly sleeved with an annular elastic rubber cover 83, and the rod wall of the hollow rod 15 located inside the hollow disk 81 is fixedly connected with a second normally closed solenoid valve 84, and the outer wall of the annular elastic rubber cover 83 is provided with a sealing groove 85, and the groove wall of the sealing groove 85 is fixedly sleeved with two elastic sealing rings 86, and the outer walls of the two sides of the annular elastic rubber cover 83 are bonded with a plurality of reinforcing rubber strips 87 by elastic glue, and the outer wall of the reinforcing rubber strip 87 is fixedly connected to the outer wall of the hollow disk 81, and the structure of the second sealing mechanism 17 is consistent with that of the first sealing mechanism 8.

[0039] A welding seam detection mechanism 9 is fixedly connected to the top side wall of the hollow shell 12, and the welding seam detection mechanism 9 includes an arc-shaped mounting plate 91 fixedly connected to the top side wall of the hollow shell 12, and a placement ring 92 for supporting the welding clamp is fixedly connected to the bottom end of the arc-shaped mounting plate 91, and a third electric push rod 93 is fixedly embedded in the top of the arc-shaped mounting plate 91, and a connecting cover 94 is fixedly connected to the bottom end of the third electric push rod 93, and a hot wire wind speed sensor 95 is fixedly connected to the top inner wall of the connecting cover 94. Two U-shaped baffles 97 are fixedly connected to the outer wall of the hollow disk 81 of the first sealing mechanism 8, and a fixed through hole is opened on the outer wall of one of the U-shaped baffles 97, and a press switch 96 in contact with the outer wall of the flange is fixedly connected to the hole wall of the fixed through hole. This mechanism enables the sewage pipe welding device to have the function of welding quality detection, which not only does not require cumbersome detection by other detection equipment, but also can avoid the situation where large errors occur in manual detection, effectively ensure the welding quality of the flange and the sewage pipe, and can improve the reliability and stability of the sewage pipe welding device in practical applications.

[0040] A connecting through hole is provided at the outer end of the hollow rod 15, and a conductive slip ring 22 is fixedly connected to the hole wall of the connecting through hole, a sealing block 23 is fixedly connected to the inner wall of the hollow rod 15, and a plurality of threading holes for sealing with the outer wall of the wire in the conductive slip ring 22 are provided on the outer wall of the sealing block 23. The conductive slip ring 22 can facilitate the reliable conduction of the first normally closed solenoid valve 18, the air pressure sensor 19 and the two second normally closed solenoid valves 84 located at the hollow rod 15 in the device, thereby improving the reliability of the device.

[0041] The second electric push rod 51, the motor 61, the vacuum pump 71, the third electric push rod 93 and the first electric push rod 11 are electrically connected to the output end of the PLC controller 62 through wires, the first normally closed solenoid valve 18 and the two second normally closed solenoid valves 84 are electrically connected to the output end of the PLC controller 62 through conductive slip rings 22 and wires, the input end of the push switch 96 is electrically connected to the external power supply through a wire, and the output end is electrically connected to the input end of the PLC controller 62 through a wire, the hot wire wind speed sensor 95 and the air pressure sensor 19 are electrically connected to the input end of the PLC controller 62 through a wire, and the input end of the PLC controller 62 can also be electrically connected to the control panel to improve the convenience of control. The above-mentioned power-on devices and electrical connections are all existing technologies and will not be repeated here.

[0042] The operating principle of the present invention is described as follows: when it is necessary to weld a flange on a sewage pipe, first insert the first threaded rod 2 and the second threaded rod 31 into the ground, and respectively rotate the first grounding ring 4 and the second grounding ring 32 to make the bottom plate 1 horizontal, then unfold the multiple pipeline auxiliary support mechanisms 21, at this time the connecting rope 20 is tightened, and the pipeline support mechanism 3 and the multiple pipeline auxiliary support mechanisms 21 are on the same horizontal line, then hoist the sewage pipe to the inner side of the pipeline support mechanism 3 and the multiple pipeline auxiliary support mechanisms 21, and set a barrier on the side of the sewage pipe away from the hollow shell 12 to prevent the sewage elbow from shifting, at this time the sewage pipe is in contact with the outer walls of the multiple support cylinders 35, and the rotatable support cylinders 35 can facilitate the rotation welding of the sewage pipe;

[0043] Then, the flange to be welded is placed on the universal ball 53 of the arc block 52. The rolling action of the universal ball 53 also facilitates the rotation of the flange during welding. Then, the second electric push rod 51 is controlled by the PLC controller 62. The moving end of the second electric push rod 51 drives the arc block 52 to adjust its position to ensure that the position of the flange to be welded placed on the arc block 52 and the universal ball 53 matches the side end of the sewage pipe placed on the arc support plate 33. That is, the relative position of the flange to be welded and the sewage pipe is initially positioned so that the flange to be welded is aligned with the sewage pipe. The two center positions of the flange and the sewage pipe are roughly overlapped on the same horizontal line, which not only facilitates the precise positioning of the flange and the sewage pipe to be welded later, but also facilitates the insertion of the first sealing mechanism 8 and the second sealing mechanism 17. Then the PLC controller 62 controls the moving end of the first electric push rod 11 to move, and the moving end of the first electric push rod 11 pushes the hollow shell 12 to move. The hollow shell 12 approaches the arc-shaped support plate 33 through the roller 13, and makes the first sealing mechanism 8 and the second sealing mechanism 17 on the hollow rod 15 respectively located at the flange to be welded. The inner side of the flange to be welded is contacted with the inner side of the flange and the sewage pipe, and as the first sealing mechanism 8 extends into the inner side of the flange to be welded, the side end of the U-shaped baffle 97 located at the first sealing mechanism 8 also contacts with the outer wall of the flange to be welded, and the side end of the U-shaped baffle 97 can also limit the flange to be welded, ensuring that the flange to be welded is in a vertical state, and at the same time, the outer wall of the flange to be welded contacts with the side end of the sewage pipe, and due to the obstruction of the sewage pipe, the flange to be welded also reversely squeezes the button of the press switch 96, and the button of the press switch 96 is squeezed into place After that, the conductive circuit inside the press switch 96 is connected, and then the conductive branch to which the press switch 96 belongs inputs an electrical signal to the input end of the PLC controller 62. The PLC controller 62 controls the vacuum pump 71 to start according to the electrical signal, and the vacuum pump 71 sucks air through the filter cartridge 73 and the L-shaped air inlet pipe 75. When the air passes through the filter cartridge 73, it is filtered and purified by the filter cloth sleeve 77 and the activated carbon adsorption layer 78. The clean air is then injected into the hollow housing 12 through the pipe joint 72. Air purification can prevent impurities from clogging the air holes and valve holes in the device.

[0044] At the same time, the PLC controller 62 also controls the two second normally closed solenoid valves 84 to be powered on and opened for 30 seconds. During the 30 seconds, the air injected into the hollow shell 12 enters the hollow disk 81 through the air inlet hole 16, the hollow rod 15 and the second normally closed solenoid valve 84 that is powered on and opened. As the air continues to enter, the air in the hollow disk 81 expands the annular elastic rubber cover 83 through the exhaust hole 82. The expanded outer walls of the two annular elastic rubber covers 83 are in contact with the inner walls of the welding flange and the sewage pipe respectively. As the subsequent air is injected, the two annular elastic rubber covers 83 are tightly fitted to the welding flange and the sewage pipe under the action of air pressure. The flange and the inner wall of the sewage pipe, and the connection has a large static friction. When the first sealing mechanism 8 and the second sealing mechanism 17 are driven to rotate by the hollow rod 15, the static friction can drive the flange to be welded to rotate on the universal ball 53 of the arc block 52, and the sewage pipe rotates on multiple rollers. At the same time, in order to improve the sealing effect of the connection of the annular elastic rubber cover 83, a sealing groove 85 is opened on the outer wall of the annular elastic rubber cover 83, and two elastic sealing rings 86 are arranged in the sealing groove 85, so that the annular elastic rubber cover 83 has a multi-layer sealing ability. At the same time, the side wall of the annular elastic rubber cover 83 is also The rubber strip 87 is reinforced for auxiliary support to avoid the annular elastic rubber cover 83 from shifting and causing the seal failure, thereby ensuring the reliability of the sealing of the first sealing mechanism 8 and the second sealing mechanism 17. After the two second normally closed solenoid valves 84 are powered on and opened, the air inside the two annular elastic rubber covers 83 is connected. At this time, the air pressure inside the two annular elastic rubber covers 83 increases, and they will produce a uniform expansion force. Since the specifications of the two annular elastic rubber covers 83 are consistent, the two annular elastic rubber covers 83 can exert relatively symmetrical forces on the flange to be welded and the inner wall of the sewage pipe. At the same time, the annular elastic rubber covers 8 3. It has good elasticity and can adjust micro-deformation adaptively according to the shape of the flange to be welded and the inner wall of the sewage pipe, so as to effectively guide the flange to be welded and the sewage pipe to move and adjust the position, and finally realize the concentric arrangement of the two centers of the flange to be welded and the sewage pipe on the same horizontal straight line. This mechanism enables the sewage pipe welding device to have the function of automatic and accurate positioning and alignment of the flange and the sewage pipe, which can not only reduce the labor intensity of the staff, but also improve the convenience and efficiency of welding the flange and the sewage pipe, and the automatic and accurate positioning and alignment can effectively reduce the operation error and improve the reliability of the sewage pipe welding device;

[0045] After the second normally closed solenoid valve 84 is powered on for 30 seconds, the PLC controller 62 not only controls the two second normally closed solenoid valves 84 to be powered off and closed, but also controls the motor 61, the third electric push rod 93 and the first normally closed solenoid valve 18 to be powered on and work for 2 minutes. After the motor 61 is powered on, the hollow rod 15 is rotated through the bevel gear 63 and the bevel gear ring 64. The hollow rod 15 drives the flange to be welded and the sewage pipe to rotate through the first sealing mechanism 8 and the second sealing mechanism 17. Due to the friction limit of the first sealing mechanism 8 and the second sealing mechanism 17, no relative displacement occurs between the flange to be welded and the sewage pipe. After the third electric push rod 93 is powered on, the moving end pushes the connecting cover 94 downward, and makes the hot wire wind speed sensor 95 close to the flange to be welded and connected to the sewage pipe. At, after the first normally closed solenoid valve 18 is opened, the air injected into the hollow shell 12 and the hollow rod 15 by the vacuum pump 71 enters the connection between the flange to be welded and the sewage pipe through the opened first normally closed solenoid valve 18. Since the gap between the flange to be welded and the sewage pipe is small, the air pressure of the air injected here will gradually increase, and then the high-pressure air will be quickly discharged through the narrow gap. The discharged high-speed airflow can clean the impurities attached to the connection between the flange to be welded and the sewage pipe, avoiding the situation where the attached impurities interfere with the welding quality. Moreover, since the flange to be welded and the sewage pipe rotate at the same speed and in the same direction, the hot wire wind speed sensor 95 can perform a comprehensive inspection on the connection between the flange to be welded and the sewage pipe. If a certain part of the sewage pipe is slightly deformed due to transportation collision, When the gap between the deformed part and the contact part of the flange to be welded becomes larger, the airflow discharged here is larger. After the larger airflow blows to the hot wire wind speed sensor 95, the airflow can accelerate the heat dissipation of the heating element inside the hot wire wind speed sensor 95, so that the surface temperature of the heating element is accelerated and a corresponding electric signal change is generated. After the electric signal is transmitted to the PLC controller 62, the PLC controller 62 will change the electric signal to control the motor 61, the third electric push rod 93 and the first normally closed solenoid valve 18 to suspend all 2-minute timing work. At the same time, the hollow rod 15 suspends rotation to remind the staff to repair the deformation part of the sewage pipe near the hot wire wind speed sensor 95. After the repair is completed, the motor 61, the third electric push rod 93 are controlled by the PLC controller 62. The first normally closed solenoid valve 18 continues to complete the remaining work of the 2-minute timing work until the comprehensive inspection of the connection between the flange to be welded and the sewage pipe is completed, that is, the 2-minute countdown is completed. At this time, the PLC controller 62 continues to control the motor 61 to work for 2 minutes, and also controls the first normally closed solenoid valve 18 and the vacuum pump 71 to be powered off, and controls the moving end of the third electric push rod 93 to retract, and then inserts the welding clamp of the welding equipment into the placement ring 92, and uses the support of the placement ring 92 to assist in reducing the effort of the welding clamp to hold the welding, and brings the welding clamp of the welding equipment close to the connection between the flange to be welded and the sewage pipe for automatic ring welding. During the specific operation of the automatic ring welding, the PLC controller 62 first powers on the motor 61 again for 2 minutes,The driving mechanism 6 rotates the flange to be welded and the sewage pipe for one circle through the hollow rod 15, the first sealing mechanism 8 and the second sealing mechanism 17. During the rotation, the welding clamp located at the placement ring 92 can automatically weld the flange and the sewage pipe. The welding process does not require additional operation by the staff, which saves time and effort and improves the welding speed of the flange and the sewage pipe. This mechanism enables the sewage pipe welding device to not only have the functions of automatically blowing away impurities from the welding seam and detecting micro-deformation of the side end of the sewage pipe, but also has the ability to automatically rotate and weld the flange and the sewage pipe, which can effectively improve the quality, convenience and efficiency of the welding of the flange and the sewage pipe, while reducing the labor intensity of the staff, thereby improving the reliability and stability of the sewage pipe welding device;

[0046] When the flange and the sewage pipe are welded, the PLC controller 62 controls the air pump 71 and the first normally closed solenoid valve 18 in the air intake mechanism 7 to be powered on and opened for 30 seconds, and the motor 61 is controlled by the PLC controller 62 to work continuously, and the air delivered by the air intake mechanism 7 enters between the flange and the sewage pipe through the hollow rod 15 and the opened first normally closed solenoid valve 18, and due to the sealing effect of the first sealing mechanism 8 and the second sealing mechanism 17, the injected air cannot be discharged, so that the air pressure between the flange and the side end of the sewage pipe gradually increases. After 30 seconds, the PLC controller The controller 62 controls the vacuum pump 71 and the second normally closed solenoid valve 84 to be powered off, and the second normally closed solenoid valve 84 is powered off and closed. At this time, the air pressure sensor 19 detects the air pressure at the seal between the flange and the side end of the sewage pipe, and sends the air pressure value in the form of an electrical signal to the PLC controller 62, and records it as P1. After 2 minutes, the PLC controller 62 records the air pressure value P2 transmitted by the air pressure sensor 19 in the form of an electrical signal. If the air pressure values ​​of P1 and P2 are consistent, the welding quality of the flange and the sewage pipe is excellent, there is no leakage from small gaps, and it can ensure that the sewage pipe is continuously used without hidden dangers. If the difference between P1 and P2 exceeds the allowable error, it means that the welding quality between the flange and the sewage pipe is unqualified and there is a leakage position. At this time, the PLC controller 62 controls the first normally closed solenoid valve 18 and the vacuum pump 71 to be powered on and started. The vacuum pump 71 continuously injects air into the flange and the sewage pipe. At the same time, the rotating weld seam is detected by the hot wire wind speed sensor 95. If the leaked airflow blows to the hot wire wind speed sensor 95, the hot wire wind speed sensor 95 generates an electrical signal to the PLC controller 62. The PLC controller 62 controls the motor 61 to stop rotating according to the signal, so that maintenance personnel can quickly find the leakage point at the weld seam near the hot wire wind speed sensor 95 for maintenance. When the device is not in use, the stability of the device transportation can be guaranteed by placing the device in a matching transport rack for transportation. The mechanism enables the sewage pipe welding device to have the function of welding quality detection. Not only does it not require cumbersome detection by other detection equipment, but it can also avoid large errors in manual detection, effectively guarantee the welding quality of the flange and the sewage pipe, and improve the reliability and stability of the sewage pipe welding device in practical applications.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage pipe welding device for sewage treatment, comprising a bottom plate (1), characterized in that: The top of the base plate (1) is fixedly embedded with a pipeline support mechanism (3) and two first threaded rods (2), the rod walls of the two first threaded rods (2) are both threadedly sleeved with a first grounding ring (4), the tops of the two first threaded rods (2) are commonly fixedly connected to an L-shaped base (10), the vertical portion of the L-shaped base (10) is fixedly embedded with a first electric push rod (11), the moving end of the first electric push rod (11) is fixedly connected to a hollow shell (12), the bottom end of the hollow shell (12) is fixedly connected to two rollers (13), the outer wall of the horizontal portion of the L-shaped base (10) is provided with two transverse guide grooves, and the bottom end of the roller (13) is in rolling contact with the groove wall of the transverse guide groove; A flange support mechanism (5) is fixedly embedded on the top of the bottom plate (1); The outer walls of both sides of the hollow shell (12) are provided with circular holes, and the hole walls of the circular holes are fixedly connected to sealed bearings (14), the inner ring inner walls of the sealed bearings (14) are jointly fixedly connected to a hollow rod (15), the outer wall of the hollow rod (15) located inside the hollow shell (12) is provided with an air intake hole (16), and the outer wall of the hollow shell (12) is fixedly connected to a driving mechanism (6) for rotating the hollow rod (15); An air intake mechanism (7) is fixedly connected to the upper surface of the hollow shell (12); The rod wall of the hollow rod (15) is fixedly sleeved with a first sealing mechanism (8) and a second sealing mechanism (17); the outer wall of the hollow rod (15) located between the first sealing mechanism (8) and the second sealing mechanism (17) is fixedly embedded with a first normally closed electromagnetic valve (18) and an air pressure sensor (19); A welding seam detection mechanism (9) is fixedly connected to the top side wall of the hollow shell (12); The first sealing mechanism (8) comprises a hollow disk (81) fixedly sleeved with the outer wall of the hollow rod (15); a vent hole (82) is provided on the side wall of the hollow disk (81); an annular elastic rubber cover (83) is fixedly sleeved on the outer wall of the hollow disk (81); a rod wall of the hollow rod (15) located inside the hollow disk (81) is fixedly connected to a second normally closed electromagnetic valve (84); a sealing groove (85) is provided on the outer wall of the annular elastic rubber cover (83); two elastic sealing rings (86) are fixedly sleeved on the groove wall of the sealing groove (85); a plurality of reinforcing rubber strips (87) are bonded to the outer walls of both sides of the annular elastic rubber cover (83) by elastic glue; the outer wall of the reinforcing rubber strip (87) is fixedly connected to the outer wall of the hollow disk (81); the structure of the second sealing mechanism (17) is consistent with the structure of the first sealing mechanism (8); The expanded outer walls of the two annular elastic rubber covers (83) are in contact with the inner wall of the flange to be welded and the sewage pipe respectively.

2. A sewage pipe welding device for sewage treatment according to claim 1, characterized in that: The pipeline support mechanism (3) comprises four second threaded rods (31) fixedly embedded in the base plate (1); the rod walls of the four second threaded rods (31) are all threadedly sleeved with second grounding rings (32); the top ends of the four second threaded rods (31) are commonly fixedly connected to an arc-shaped support plate (33); the outer wall of the arc-shaped support plate (33) is fixedly connected to a plurality of U-shaped rods (34); and the rod walls of the U-shaped rods (34) are connected to support cylinders (35) via rolling bearings.

3. A sewage pipe welding device for sewage treatment according to claim 2, characterized in that: The flange support mechanism (5) comprises a second electric push rod (51) fixedly embedded in the bottom plate (1), the top end of the second electric push rod (51) being fixedly connected to an arc block (52), the inner wall of the arc block (52) being fixedly embedded with a plurality of universal balls (53), and the outer wall of the arc block (52) being in active contact with the side wall of the arc support plate (33).

4. A sewage pipe welding device for sewage treatment according to claim 1, characterized in that: The driving mechanism (6) comprises a motor (61) and a PLC controller (62) fixedly connected to the outer wall of the hollow housing (12); an output end of the motor (61) is fixedly connected to a bevel gear (63); and a rod wall of the hollow rod (15) is fixedly sleeved with a bevel gear ring (64) meshing with the bevel gear (63).

5. A sewage pipe welding device for sewage treatment according to claim 1, characterized in that: The air intake mechanism (7) comprises an air pump (71) fixedly connected to the upper surface of the hollow shell (12); the air outlet end of the air pump (71) is fixedly connected to a pipe joint (72); the air outlet end of the pipe joint (72) passes through the inner wall of the top end of the hollow shell (12); the air intake end of the air pump (71) is fixedly sleeved with a filter cartridge (73); the inner wall of the filter cartridge (73) is threadedly connected to a sealing ring (74); the inner wall of the sealing ring (74) is fixedly connected to an L-shaped air intake pipe (75); the inner wall of the sealing ring (74) is movably connected to a filter screen cartridge (76); the inner wall of the filter screen cartridge (76) is fixedly connected to a filter cloth sleeve (77); the inner wall of the filter cloth sleeve (77) is filled with an activated carbon adsorption layer (78); and the inner wall of the sealing ring (74) is fixedly connected to a mesh block (79) for blocking the activated carbon adsorption layer (78).

6. A sewage pipe welding device for sewage treatment according to claim 1, characterized in that: The welding seam detection mechanism (9) comprises an arc-shaped mounting plate (91) fixedly connected to the top side wall of the hollow shell (12); the bottom end of the arc-shaped mounting plate (91) is fixedly connected to a placement ring (92) for supporting the welding clamp; the top end of the arc-shaped mounting plate (91) is fixedly embedded with a third electric push rod (93); the bottom end of the third electric push rod (93) is fixedly connected to a connecting cover (94); the top inner wall of the connecting cover (94) is fixedly connected to a hot wire wind speed sensor (95); the outer wall of the hollow disk (81) of the first sealing mechanism (8) is fixedly connected to two U-shaped baffles (97); the outer wall of one of the U-shaped baffles (97) is provided with a fixed through hole, and the hole wall of the fixed through hole is fixedly connected to a push switch (96) in contact with the outer wall of the flange.

7. A sewage pipe welding device for sewage treatment according to claim 2, characterized in that: The outer wall of the arc-shaped support plate (33) is fixedly connected to two connection ropes (20), and the outer walls of the two connection ropes (20) are commonly fixedly connected to a plurality of pipeline auxiliary support mechanisms (21), and the structures of the plurality of pipeline auxiliary support mechanisms (21) are consistent with the structure of the pipeline support mechanism (3).

8. A sewage pipe welding device for sewage treatment according to claim 1, characterized in that: A connecting through hole is formed at the outer end of the hollow rod (15), and a conductive slip ring (22) is fixedly connected to the hole wall of the connecting through hole. A sealing block (23) is fixedly connected to the inner wall of the hollow rod (15), and a plurality of threading holes for sealingly cooperating with the outer wall of the wire in the conductive slip ring (22) are formed on the outer wall of the sealing block (23).

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