A swaging and flanging device and process for high-pressure pipelines for slurry transportation

Abstract

The present invention relates to the field of high-pressure pipeline flanging, and in particular to a crimping and flanging device and process for high-pressure pipelines for slurry transportation. When the polyethylene inner tube of the traditional crimping and flanging equipment is flanging and flattened, the protruding part is not uniform, the surface may not be flat when pressed, and the protruding part after crimping is not in close contact with the outside of the high-pressure pipeline. A crimping and flanging device and process for high-pressure pipelines for slurry transportation, including a locking device; a sliding frame is slidably mounted on the locking device, a spreading frame is rotatably connected to the sliding frame, a fixing ring is fixedly connected inside the spreading frame, and four mounting frames are fixedly connected inside the spreading frame. Before crimping the protruding polyethylene inner tube, the polyethylene inner tube needs to be spread open first, and the motor rotates to make the spreading frame rotate when the polyethylene inner tube is spread open. At the same time, the heater heats the polyethylene inner tube, which can make the polyethylene inner tube spread more evenly, so that the subsequent compression is more flat.

Description

Technical Field

[0001] The invention relates to the field of high-pressure pipeline flanging, and in particular to a crimping and flanging device and process for a high-pressure pipeline for slurry transportation. Background Art

[0002] A polyethylene inner tube will be arranged inside the high-pressure pipeline for slurry transportation. The inner tube will protrude from the external high-pressure pipeline. The protruding excess part needs to be flanged and pressed tightly against the outside of the high-pressure pipeline. The protruding polyethylene needs to be heated first, and then the protruding polyethylene inner tube is stretched open, and then flanged and flattened. Traditional crimping and flanging equipment will directly crimp during the flanging and flattening process, which may cause wrinkles on the crimped part of the protruding polyethylene inner tube, resulting in uneven crimping of the polyethylene inner tube, which may cause the surface of the polyethylene inner tube to be uneven when it is pressed, and when the polyethylene inner tube is crimped, the polyethylene inner tube is not closely attached to the outside of the high-pressure pipeline, which may result in low crimping quality of the high-pressure pipeline. Summary of the invention

[0003] In order to overcome the shortcomings of traditional crimping and flanging equipment, such as the protruding part of the polyethylene inner tube is not evenly stretched when the flange is flattened, the surface may not be flat when pressed, and the protruding part is not fit enough with the outside of the high-pressure pipeline after crimping, the present invention provides a crimping and flanging device and process for slurry conveying high-pressure pipelines, which can stretch the polyethylene inner tube more evenly, press the flange more flatly, and fit more closely after crimping.

[0004] The technical solution is:

[0005] A crimping and flanging device and process for a high-pressure pipeline for conveying slurry, comprising a locking device, a sliding frame slidably mounted on the locking device, a spreading frame rotatably connected to the sliding frame, a fixing ring fixedly connected inside the spreading frame, four mounting frames fixedly connected inside the spreading frame, a heater slidably connected to the fixing ring, a rotating mechanism for rotating the spreading frame is provided on the sliding frame, a flattening mechanism for flattening a polyethylene inner tube after being spread is provided on the spreading frame, and a shrinking mechanism for shrinking the heater is provided on the spreading frame and the heater.

[0006] As an improvement of the above scheme, the rotating mechanism includes a motor, the motor is fixedly connected to the sliding frame, the output shaft of the motor is rotatably connected to the sliding frame, the output shaft at the bottom end of the motor is fixedly connected to a driving gear, a gear ring is installed on the inner side of the top of the support frame, and the driving gear is meshed with the gear ring.

[0007] As an improvement on the above scheme, the flattening mechanism includes a connecting shaft, which is rotatably connected to the top of the support frame, a driven gear is installed on the top of the connecting shaft, the driving gear is meshed with the driven gear, a worm is installed at the bottom of the connecting shaft, the top of the support frame is fixedly connected to a connecting frame, four worm gears are rotatably installed on the connecting frame, the worm gears are meshed with the worm, four transmission wheels 1 are installed on the connecting frame, one side of each of the worm gears is fixedly connected to one of the transmission wheels 1, two transmission wheels 2 are installed on each of the mounting frames, four connecting rods are installed on the support frame, a transmission wheel 2 is installed on each of the connecting rods, a flat belt is wound between the transmission wheel 1 and the three transmission wheels 2, and a lower pressure roller is fixedly connected to each of the connecting rods.

[0008] As an improvement of the above-mentioned scheme, the retraction mechanism includes a clamping rod, four sliding grooves are opened on the fixed ring, a clamping rod is slidably installed on each sliding groove, the bottom ends of the four clamping rods are in contact with the top of the heater, and two return springs are fixedly connected between the fixed ring and the heater, and the two return springs are symmetrically arranged.

[0009] As an improvement to the above scheme, a reversing mechanism is also included, which includes a transmission shaft, which is rotatably mounted on the locking device, a hexagonal prism is fixedly connected to the top of the transmission shaft, a column gear is slidably mounted on the hexagonal prism, the column gear is rotatably connected to the top of the sliding frame, the column gear is meshed with the driving gear, a friction roller is installed at the bottom of the transmission shaft, a plurality of convex balls are evenly arranged on the side walls of the friction roller, and a plurality of roller frames are rotatably connected to the locking device.

[0010] As an improvement of the above solution, an electromagnet is further included. The electromagnet is fixedly connected to the bottom of the connecting frame, and a permanent magnet is installed in the middle of the heater.

[0011] As an improvement of the above solution, the permanent magnet is a neodymium iron boron magnet.

[0012] A buckling and flanging process for a high-pressure pipeline for slurry transportation, using the above-mentioned buckling and flanging process for a high-pressure pipeline for slurry transportation, the process comprises the following steps;

[0013] Step 1: The staff first puts the high-pressure pipe into the locker, moves the sliding frame downward, allows the heater to be inserted into the polyethylene inner tube, and then moves the sliding frame downward to allow the opening frame to open the protruding polyethylene inner tube;

[0014] Step 2: The staff starts the motor, the motor rotates to drive the driving gear to rotate, thereby driving the ring gear to rotate, and the ring gear drives the support frame to rotate;

[0015] Step 3: Finally, after the staff pulls the heater away, reverse the motor. When the lower pressing roller retracts inward, it pushes the clamping rod to move inward to re-clamp the heater.

[0016] 1. Before clamping the protruding polyethylene inner tube, it is necessary to first expand the protruding polyethylene inner tube. The motor rotates to make the expanding frame rotate. When the expanding frame expands the polyethylene inner tube, the expanding frame will rotate. At the same time, the heater is sleeved into the polyethylene inner tube, and the heater heats the protruding part of the polyethylene inner tube, making the protruding part of the polyethylene inner tube soften. The rotation of the expanding frame can make the polyethylene inner tube expand more evenly, making it more convenient for the subsequent pressing work of the polyethylene inner tube.

[0017] 2. When the expanding frame rotates, it opens the lower pressing roller, making the lower pressing roller flatten the protruding polyethylene inner tube. The lower pressing roller itself will rotate to smooth the pressed polyethylene inner tube. While pressing, the lower pressing roller can smooth the polyethylene inner tube, making the surface of the protruding polyethylene inner tube smoother after pressing.

[0018] 3. When the clamping rod moves outward, the heater moves upward into the inside of the expanding frame, so that the heater heats the expanding frame and the lower pressing roller. While the lower pressing roller presses the protruding part of the expanded polyethylene inner tube, it is heated and softened, increasing its ductility, and enabling the protruding part of the polyethylene inner tube to fit more closely with the high-pressure pipeline. Brief Description of the Drawings

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 It is a disassembled three-dimensional structural schematic diagram of the lock, sliding frame, expanding frame, fixed ring and mounting frame of the present invention.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the rotating mechanism of the present invention.

[0022] Figure 4 It is a sectional three-dimensional structural schematic diagram of the flattening mechanism of the present invention.

[0023] Figure 5 It is a disassembled three-dimensional structural schematic diagram of the flattening mechanism of the present invention.

[0024] Figure 6 It is a sectional three-dimensional structural schematic diagram of a part of the present invention.

[0025] Figure 7 It is an enlarged three-dimensional structural schematic diagram of the contraction mechanism of the present invention.

[0026] Figure 8 It is a three-dimensional structural schematic diagram of the reverse mechanism of the present invention.

[0027] Figure 9 Schematic exploded three-dimensional structure diagram of the inversion mechanism of the present invention.

[0028] Figure 10 Schematic exploded three-dimensional sectional structure diagram of the electromagnet and permanent magnet of the present invention.

[0029] Names of the reference numerals in the figure: 1, locking device; 2, sliding frame; 3, spreading frame; 31, fixing ring; 32, mounting frame; 4, heater; 51, motor; 52, driving gear; 53, gear ring; 61, connecting shaft; 62, driven gear; 63, worm; 64, connecting frame; 65, worm gear; 66, first transmission wheel; 67, second transmission wheel; 671, flat belt; 68, connecting rod; 69, lower pressing roller; 71, sliding groove; 72, clamping rod; 73, return spring; 81, transmission shaft; 811, hexagonal prism; 82, cylindrical gear; 83, friction roller; 84, convex ball; 85, roller frame; 9, electromagnet; 10, permanent magnet. Detailed implementation manners

[0030] The above solution will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are used to illustrate the present application and are not limited to restricting the scope of the present application. The implementation conditions adopted in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually those in conventional experiments.

[0031] Embodiment 1: A crimping and flanging device for a high-pressure pipeline for slurry transportation, as Figures 1 - 7 shown, including a locking device 1, a sliding frame 2 is slidably mounted on the locking device 1, a spreading frame 3 is rotatably connected to the sliding frame 2, a fixing ring 31 is fixedly connected inside the spreading frame 3, four mounting frames 32 are fixedly connected inside the spreading frame 3, a heater 4 is slidably connected to the fixing ring 31, the heater 4 heats the polyethylene inner pipe to facilitate subsequent spreading and pressing operations, a rotating mechanism for rotating the spreading frame 3 is provided on the sliding frame 2, a flattening mechanism for flattening the spread polyethylene inner pipe is provided on the spreading frame 3, and a contracting mechanism for contracting the heater 4 is provided on the spreading frame 3 and the heater 4.

[0032] The rotating mechanism includes a motor 51, the motor 51 is fixedly connected to the sliding frame 2, the output shaft of the motor 51 is rotatably connected to the sliding frame 2, a driving gear 52 is fixedly connected to the output shaft at the bottom of the motor 51, a gear ring 53 is installed inside the top of the spreading frame 3, the driving gear 52 meshes with the gear ring 53, and the spreading frame 3 rotates and spreads the protruding polyethylene inner pipe at the same time, making the spreading of the polyethylene inner pipe more uniform.

[0033] The flattening mechanism includes a connecting shaft 61, which is rotatably connected to the top of the support frame 3, a driven gear 62 is installed on the top of the connecting shaft 61, and the driving gear 52 is meshed with the driven gear 62, a worm 63 is installed at the bottom of the connecting shaft 61, a connecting frame 64 is fixedly connected to the top of the support frame 3, and four worm wheels 65 are rotatably installed on the connecting frame 64, and the worm wheels 65 are meshed with the worm 63, and four transmission wheels 66 are installed on the connecting frame 64, each of which is a gear wheel. One side of the wheel 65 is fixedly connected to a transmission wheel 1 66, two transmission wheels 2 67 are installed on each of the mounting frames 32, the expansion frame 3 is installed with four connecting rods 68, a transmission wheel 2 67 is installed on each of the connecting rods 68, a flat belt 671 is wound between the transmission wheel 1 66 and the three transmission wheels 2 67, and a lower pressure roller 69 is fixedly connected to each of the connecting rods 68, and the lower pressure roller 69 will press and smooth the expanded polyethylene inner tube to make the pressed polyethylene inner tube smoother.

[0034] The contraction mechanism includes a clamping rod 72, four sliding grooves 71 are opened on the fixing ring 31, and a clamping rod 72 is slidably installed on each of the sliding grooves 71. The bottom ends of the four clamping rods 72 are in contact with the top of the heater 4. Two return springs 73 are fixedly connected between the fixing ring 31 and the heater 4. The two return springs 73 are symmetrically arranged. The heater 4 is continuously heated during the pressing process to ensure the high ductility of the polyethylene inner tube, so that the polyethylene inner tube is pressed more closely to the high-pressure pipeline.

[0035] At first, the bottoms of the four clamping rods 72 abut against the top of the heater 4, and the return spring 73 is stretched. When it is necessary to crimp and turn over the polyethylene inner tube protruding from the high-pressure pipeline, the staff first place the side of the high-pressure pipeline with the protruding polyethylene inner tube facing up into the lock 1, lock the high-pressure pipeline, and then move the sliding frame 2 downward. The sliding frame 2 drives the expanding frame 3, the fixed ring 31, the mounting frame 32 and the heater 4 to continue moving downward, so that the heater 4 is sleeved into the polyethylene inner tube to heat the polyethylene inner tube to make it soft. Then move the sliding frame 2 downward again, so that the expanding frame 3 expands the protruding polyethylene inner tube outward. Start the motor 51, the motor 51 rotates to drive the driving gear 52 to rotate, thereby driving the gear ring 53 to rotate. The gear ring 53 drives the expanding frame 3 to rotate, and can evenly expand the protruding polyethylene inner tube outward. While the driving gear 52 rotates, it drives the driven gear 62 to rotate, thereby driving the connecting shaft 61 to rotate. The connecting shaft 61 rotates to drive the worm 63 to rotate, the worm 63 drives the worm gear 65 to rotate, and the worm gear 65 rotates to drive the first transmission wheel 66 to rotate. The rotation of the first transmission wheel 66 makes the flat belt 671 move along the first transmission wheel 66 and the second transmission wheel 67. The movement of the flat belt 671 drives the second transmission wheel 67 on the connecting rod 68 to rotate. Then the second transmission wheel 67 drives the connecting rod 68 to rotate, thereby driving the lower pressing roller 69 to open outward. When the lower pressing roller 69 opens, it will press down the expanded polyethylene inner tube. When rotating, the lower pressing roller 69 opens to flatten the protruding polyethylene inner tube. The lower pressing roller 69 itself will rotate to smooth the pressed polyethylene inner tube, smoothing and pressing at the same time, which can make the surface of the protruding polyethylene inner tube smoother after being pressed. When the lower pressing roller 69 opens, it drives the clamping rod 72 to move outward, so that the clamping rod 72 is separated from the top of the heater 4. The stretched return spring 73 will reset and drive the heater 4 to move upward, retracting the heater 4 into the expanding frame 3, so that the heater 4 heats the expanding frame 3 and the lower pressing roller 69. While the lower pressing roller 69 presses the protruding part of the expanded polyethylene inner tube, it is heated and softened to increase its ductility, which can make the protruding part of the polyethylene inner tube fit better with the high-pressure pipeline. Finally, after the staff pulls the heater 4 away, start the motor 51 to reverse. When the lower pressing roller 69 retracts inward, it pushes the clamping rod 72 to move inward to re-clamp the heater 4.

[0036] Example 2: On the basis of Example 1, as Figures 8 - 9As shown in the figure, it further includes a reversing mechanism. The reversing mechanism includes a transmission shaft 81, which is rotatably installed on the lock 1. A hexagonal prism 811 is fixedly connected to the top of the transmission shaft 81. A column gear 82 is slidably installed on the hexagonal prism 811. The column gear 82 is rotatably connected to the top of the sliding frame 2. The column gear 82 meshes with the driving gear 52. A friction roller 83 is installed at the bottom of the transmission shaft 81. A number of convex balls 84 are evenly arranged on the side wall of the friction roller 83. A number of roller frames 85 are rotatably connected to the lock 1. The convex balls 84 drive the high-pressure pipeline to rotate, so that the opening frame 3 and the protruding polyethylene inner pipe rotate relatively faster, and further make the polyethylene inner pipe be pressed more evenly.

[0037] When the sliding frame 2 moves downward, it will also drive the column gear 82 to move downward. When the driving gear 52 rotates, it will drive the column gear 82 to rotate, which will drive the hexagonal prism 811 to rotate, thus driving the transmission shaft 81 to rotate. The rotation of the transmission shaft 81 drives the friction roller 83 to rotate. The convex balls 84 on the friction roller 83 will friction the high-pressure pipeline so that the high-pressure pipeline rotates along the roller frame 85. The rotation direction of the high-pressure pipeline is opposite to the rotation direction of the opening frame 3, making the opening frame 3 open the protruding part of the polyethylene inner pipe and the lower pressing roller 69 press the protruding part of the polyethylene inner pipe rotate faster, so that the opening frame 3 can open the protruding polyethylene inner pipe more fully.

[0038] Embodiment 3: On the basis of Embodiment 2, as Figure 10 shown in the figure, it further includes an electromagnet 9, which is fixedly connected to the bottom of the connecting frame 64. A permanent magnet 10 is installed in the middle of the heater 4. The mutual repulsion between the electromagnet 9 and the permanent magnet 10 can make the heater 4 automatically reset.

[0039] The permanent magnet 10 is a neodymium iron boron magnet, and the permanent magnet 10 can withstand high temperatures, so that the magnetism will not weaken.

[0040] When the protruding part of the polyethylene inner pipe is flattened, start the electromagnet 9. After the electromagnet 9 is powered on, it generates magnetism and repels the permanent magnet 10, so that the heater 4 moves downward to reset. Then start the motor 51 to reverse. When the lower pressing roller 69 retracts inward, it pushes the clamping rod 72 to move inward to re-clamp the heater 4.

[0041] The above embodiments are only the preferred embodiments of the present invention, and are not used to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A swaging and flanging device for high-pressure pipelines for slurry transportation, characterized in that It includes a locking device (1), on which a sliding frame (2) is slidably mounted. A spreading frame (3) is rotatably connected to the sliding frame (2). Inside the spreading frame (3), a fixed ring (31) is fixedly connected, and four mounting frames (32) are fixedly connected inside the spreading frame (3). A heater (4) is slidably connected to the fixed ring (31). A rotating mechanism for rotating the spreading frame (3) is provided on the sliding frame (2). A flattening mechanism for flattening the polyethylene inner tube after spreading is provided on the spreading frame (3). A shrinking mechanism for shrinking the heater (4) is provided on the spreading frame (3) and the heater (4). The rotating mechanism includes a motor (51), which is fixedly connected to the sliding frame (2). The output shaft of the motor (51) is rotatably connected to the sliding frame (2). A driving gear (52) is fixedly connected to the output shaft at the bottom of the motor (51). A toothed ring (53) is installed inside the top of the spreading frame (3). The driving gear (52) meshes with the toothed ring (53). The flattening mechanism includes a connecting shaft (61), which is rotatably connected to the top of the spreading frame (3). A driven gear (62) is installed at the top of the connecting shaft (61). The driving gear (52) meshes with the driven gear (62). A worm (63) is installed at the bottom of the connecting shaft (61). A connecting frame (64) is fixedly connected to the top of the spreading frame (3). Four worm wheels (65) are rotatably installed on the connecting frame (64). The worm wheel (65) meshes with the worm (63). Four first transmission wheels (66) are installed on the connecting frame (64). One side of each worm wheel (65) is fixedly connected to one of the first transmission wheels (66). Two second transmission wheels (67) are installed on each mounting frame (32). Four connecting rods (68) are installed on the spreading frame (3). One of the second transmission wheels (67) is installed on each connecting rod (68). A flat belt (671) is wound around the first transmission wheel (66) and three of the second transmission wheels (67). A downward pressing roller (69) is fixedly connected to each connecting rod (68).

2. The flanging device for a high-pressure pipeline for slurry transportation according to claim 1, characterized in that, The shrinking mechanism includes a clamping rod (72). Four sliding grooves (71) are formed on the fixed ring (31). One of the clamping rods (72) is slidably mounted on each sliding groove (71). The bottom ends of the four clamping rods (72) are in contact with the top of the heater (4). Two reset springs (73) are fixedly connected between the fixed ring (31) and the heater (4). The two reset springs (73) are symmetrically arranged.

3. The flanging device for a high-pressure pipeline for slurry transportation according to claim 2, characterized in that, The invention also comprises a reversing mechanism, the reversing mechanism comprising a transmission shaft (81), the transmission shaft (81) being rotatably mounted on the locking device (1), a hexagonal prism (811) being fixedly connected to the top of the transmission shaft (81), a column gear (82) being slidably mounted on the hexagonal prism (811), the column gear (82) being rotatably connected to the top of the sliding frame (2), the column gear (82) being meshed with the driving gear (52), a friction roller (83) being mounted on the bottom of the transmission shaft (81), a plurality of convex balls (84) being evenly arranged on the side wall of the friction roller (83), and a plurality of roller frames (85) being rotatably connected to the locking device (1).

4. The flanging device for high-pressure pipelines for slurry transportation according to claim 3, characterized in that, It also includes an electromagnet (9), the electromagnet (9) being fixedly connected to the bottom of the connecting frame (64), and a permanent magnet (10) being installed in the middle of the interior of the heater (4).

5. The flanging device for high-pressure pipelines for slurry transportation according to claim 4, characterized in that, The permanent magnet (10) is a neodymium iron boron magnet.

6. A swaging and flanging process for high-pressure pipelines for slurry transportation, characterized in that, The crimping and flanging device for a slurry conveying high-pressure pipeline as claimed in claim 5 is applied, and the process comprises the following steps: Step 1: The staff first puts the high-pressure pipe into the locking device (1), moves the sliding frame (2) downward, allows the heater (4) to be inserted into the polyethylene inner tube, and then moves the sliding frame (2) downward to allow the opening frame (3) to open the protruding polyethylene inner tube; Step 2: The staff starts the motor (51), the motor (51) rotates to drive the driving gear (52), thereby driving the ring gear (53), and the ring gear (53) drives the support frame (3) to rotate; Step 3: Finally, after the staff pulls the heater (4) apart, the motor (51) is started to reverse, and the lower pressure roller (69) is retracted inwardly to push the clamping rod (72) to move inwardly and clamp the heater (4) again.

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