Crimping and flanging device and process for high-pressure pipeline used in 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 a high-pressure pipeline used in slurry transportation. A traditional crimping and flanging device cannot uniformly expand a protruding part during flanging and flattening of a polyethylene inner pipe, so that the surface may not be flat during pressing, and after crimping, the protruding part may not fit well with the exterior of a high-pressure pipeline. The crimping and flanging device and process for the high-pressure pipeline used in slurry transportation comprise a locking device; a sliding frame is slidably mounted on the locking device, an expanding frame is rotatably connected to the sliding frame, a fixed ring is fixedly connected in the expanding frame, and four mounting brackets are fixedly connected in the expanding frame. Before crimping a protruding polyethylene inner pipe, it is necessary to expand the polyethylene inner pipe; a motor rotates so that the expanding frame rotates while expanding the polyethylene inner pipe, and meanwhile, a heater heats the polyethylene inner pipe, so that the polyethylene inner pipe can be expanded more uniformly, thereby achieving flatness during subsequent pressing.

Description

A buckling and flanging device and process for high-pressure pipelines used for slurry transportation Technical Field

[0001] The present 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 provided 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 out, 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 not flat when it is pressed. In addition, when the polyethylene inner tube is crimped, the polyethylene inner tube is not tightly fitted 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 in that the protruding part of the polyethylene inner tube is not uniform when the flange is flattened, the surface may not be flat when pressed, and the protruding part is not in close contact 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 expand the polyethylene inner tube more evenly, press the flange more flatly, and fit more closely after crimping. Technical Solution

[0004] A device and process for crimping and flanging 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 to the inside of the spreading frame, four mounting frames fixedly connected to the inside of the spreading frame, a heater slidably connected to the fixing ring, a rotating mechanism for rotating the spreading frame provided on the sliding frame, a flattening mechanism for flattening the polyethylene inner tube after being spread, and a shrinking mechanism for shrinking the heater provided on the spreading frame and the heater.

[0005] As an improvement to the above solution, the rotating mechanism includes a motor, which 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.

[0006] As an improvement to 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, and a worm is installed at the bottom of the connecting shaft. The top of the support frame is fixedly connected to the connecting frame, and four worm gears are rotatably installed on the connecting frame, and the worm gears are meshed with the worm. Four transmission wheels 1 are installed on the connecting frame, and one side of each worm gear is fixedly connected to one transmission wheel 1, and two transmission wheels 2 are installed on each of the mounting frames. The support frame is installed with four connecting rods, and a transmission wheel 2 is installed on each connecting rod. A flat belt is wound between the transmission wheel 1 and the three transmission wheels 2, and each connecting rod is fixedly connected to a lower pressure roller.

[0007] As an improvement of the above-mentioned scheme, the retraction mechanism includes a clamping rod, four sliding grooves are opened on the fixed ring, and 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 reset springs are fixedly connected between the fixed ring and the heater, and the two reset springs are symmetrically arranged.

[0008] As an improvement to the above scheme, a reversing mechanism is also included, which includes a transmission shaft, which is rotatably mounted on the locker, a hexagonal prism fixedly connected to the top of the transmission shaft, a column gear 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 provided on the side walls of the friction roller, and a plurality of roller frames are rotatably connected to the locker.

[0009] As an improvement to 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 interior of the heater.

[0010] As an improvement to the above solution, the permanent magnet is a neodymium iron boron magnet.

[0011] A buckling and flanging process for a high-pressure pipe for slurry transportation is applied to the above-mentioned buckling and flanging process for a high-pressure pipe for slurry transportation, and the process comprises the following steps:

[0012] Step 1: The staff first puts the high-pressure pipe into the locker, moves the sliding frame downward, so that the heater is placed into the polyethylene inner tube, and then moves the sliding frame downward so that the expansion frame expands the protruding polyethylene inner tube;

[0013] 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;

[0014] Step 3: Finally, the staff pulls the heater open, starts the motor to reverse, and when the lower pressure roller retracts inward, pushes the clamping rod inward to re-lock the heater.

[0015] 1. Before buckling the protruding polyethylene inner tube, it is necessary to expand the protruding polyethylene inner tube first. The motor rotates to rotate the expansion frame. When the expansion frame expands the polyethylene inner tube, the expansion frame will rotate. At the same time, the heater is put into the polyethylene inner tube. The heater heats the protruding part of the polyethylene inner tube, so that the protruding part of the polyethylene inner tube softens. The rotation of the expansion frame can expand the polyethylene inner tube more evenly, making the polyethylene inner tube more convenient for subsequent compression work.

[0016] 2. When the support frame rotates, the lower pressure roller is opened, so that the lower pressure roller can flatten the protruding polyethylene inner tube. The lower pressure roller itself will rotate to flatten the pressed polyethylene inner tube. The lower pressure roller can flatten the polyethylene inner tube while pressing it, making the surface of the protruding polyethylene inner tube smoother after pressing.

[0017] 3. When the clamping rod moves outward, the heater moves upward into the expansion frame, so that the heater heats the expansion frame and the lower pressure roller. When the lower pressure roller presses the protruding part of the expanded polyethylene inner tube, it heats and softens it, increasing its ductility, so that the protruding part of the polyethylene inner tube can fit more closely with the high-pressure pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of the three-dimensional structure of the present invention.

[0019] FIG2 is a schematic diagram of the disassembled three-dimensional structure of the locking device, the sliding frame, the opening frame, the fixing ring and the mounting frame of the present invention.

[0020] FIG3 is a schematic diagram of the three-dimensional structure of the rotating mechanism of the present invention.

[0021] FIG4 is a schematic cross-sectional perspective view of the flattening mechanism of the present invention.

[0022] FIG5 is a schematic diagram of the disassembled three-dimensional structure of the flattening mechanism of the present invention.

[0023] FIG6 is a schematic diagram of a cross-sectional three-dimensional structure of part of the present invention.

[0024] FIG7 is an enlarged three-dimensional structural diagram of the retraction mechanism of the present invention.

[0025] FIG8 is a schematic diagram of the three-dimensional structure of the reversing mechanism of the present invention.

[0026] FIG9 is a schematic diagram of the disassembled three-dimensional structure of the reversing mechanism of the present invention.

[0027] FIG10 is a schematic diagram of a sectional three-dimensional structure of an electromagnet and a permanent magnet according to the present invention.

[0028] The numbers in the figure are: 1. Locking device, 2. Sliding frame, 3. Spreading frame, 31. Fixed ring, 32. Mounting frame, 4. Heater, 51. Motor, 52. Driving gear, 53. Ring gear, 61. Connecting shaft, 62. Driven gear, 63. Worm, 64. Connecting frame, 65. Worm gear, 66. Transmission wheel one, 67. Transmission wheel two, 671. Flat belt, 68. Connecting rod, 69. Lower pressure roller, 71. Sliding groove, 72. Clamping rod, 73. Return spring, 81. Transmission shaft, 811. Hexagonal prism, 82. Column gear, 83. Friction roller, 84. Convex ball, 85. Roller frame, 9. Electromagnet, 10. Permanent magnet. DETAILED DESCRIPTION

[0029] The above scheme is further described below with reference to specific examples. It should be understood that these examples are intended to illustrate the present application and are not intended to limit the scope of the present application. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer. The implementation conditions not specified are generally those used in routine experiments.

[0030] Example 1: A crimping and flanging device for a high-pressure pipeline for conveying slurry, as shown in Figures 1 to 7, includes a locker 1, a sliding frame 2 is slidably mounted on the locker 1, a stretching frame 3 is rotatably connected to the sliding frame 2, a fixing ring 31 is fixedly connected inside the stretching frame 3, four mounting frames 32 are fixedly connected inside the stretching frame 3, a heater 4 is slidably connected to the fixing ring 31, and the heater 4 heats the polyethylene inner tube to facilitate subsequent stretching and tightening work, a rotating mechanism for rotating the stretching frame 3 is provided on the sliding frame 2, a flattening mechanism for flattening the stretched polyethylene inner tube is provided on the stretching frame 3, and a shrinking mechanism for shrinking the heater 4 is provided on the stretching frame 3 and the heater 4.

[0031] 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. The output shaft at the bottom end of the motor 51 is fixedly connected to a driving gear 52. A ring gear 53 is installed on the inner side of the top of the expansion frame 3. The driving gear 52 is engaged with the ring gear 53. The expansion frame 3 will expand the protruding polyethylene inner tube while rotating, so that the polyethylene inner tube is expanded more evenly.

[0032] 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 engaged with the driven gear 62. A worm 63 is installed on the bottom of the connecting shaft 61. A connecting frame 64 is fixedly connected to the top of the support frame 3. Four worm wheels 65 are rotatably installed on the connecting frame 64. The worm wheels 65 are engaged with the worm 63. Four transmission wheels 66 are installed on the connecting frame 64. Each worm 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, and the expansion frame 3 is installed with four connecting rods 68, and each of the connecting rods 68 is installed with a transmission wheel 2 67. A flat belt 671 is wound between the transmission wheel 1 66 and the three transmission wheels 2 67, and each of the connecting rods 68 is fixedly connected to a lower pressure roller 69, which will press and smooth the expanded polyethylene inner tube, making the compressed polyethylene inner tube smoother.

[0033] 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 sliding groove 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 tightly to fit the high-pressure pipeline.

[0034] Initially, the bottom ends of the four clamping rods 72 are against the top of the heater 4, and the return spring 73 is stretched. When it is necessary to buckle and flange the protruding polyethylene inner tube of the high-pressure pipe, the staff first puts the high-pressure pipe with the protruding side of the polyethylene inner tube upward into the locker 1 to lock the high-pressure pipe, and then moves the sliding frame 2 downward. The sliding frame 2 drives the support frame 3, the fixing ring 31, the mounting frame 32 and the heater 4 to continue to move downward, so that the heater 4 is inserted into the polyethylene inner tube, and the polyethylene inner tube is heated to soften it. Then the sliding frame 2 is moved downward to support the support frame 3, the fixing ring 31, the mounting frame 32 and the heater 4. The opening frame 3 stretches the protruding polyethylene inner tube outward, starts the motor 51, and the rotation of the motor 51 drives the driving gear 52 to rotate, thereby driving the ring gear 53 to rotate, and the ring gear 53 drives the opening frame 3 to rotate, which can evenly stretch the protruding polyethylene inner tube outward. The rotation of the driving gear 52 simultaneously drives the driven gear 62 to rotate, thereby driving the connecting shaft 61 to rotate, and the rotation of the connecting shaft 61 drives the worm 63 to rotate, and the worm 63 drives the worm wheel 65 to rotate, and the rotation of the worm wheel 65 drives the transmission wheel 1 66 to rotate, and the rotation of the transmission wheel 1 66 causes the flat belt 671 to move along the transmission wheel 1 66 and The transmission wheel 2 67 moves, and the flat belt 671 moves to drive the transmission wheel 2 67 on the connecting rod 68 to rotate, and then the transmission wheel 2 67 drives the connecting rod 68 to rotate, thereby driving the lower pressure roller 69 to open outward. The lower pressure roller 69 opens and presses the stretched polyethylene inner tube downward. When rotating, the lower pressure roller 69 opens and flattens the protruding polyethylene inner tube. The lower pressure roller 69 itself rotates to flatten the pressed polyethylene inner tube, flattening it while flattening it, so that the surface of the protruding polyethylene inner tube after being pressed is smoother. When the lower pressure 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, and the stretched reset spring 73 will reset and drive the heater 4 to move upward, and the heater 4 will be retracted into the support frame 3, so that the heater 4 heats the support frame 3 and the lower pressure roller 69. The lower pressure roller 69 presses the protruding part of the stretched polyethylene inner tube and heats and softens it at the same time, increasing its ductility, so that the protruding part of the polyethylene inner tube can fit more closely with the high-pressure pipeline. Finally, after the staff pulls open the heater 4, the motor 51 is started to reverse, and when the lower pressure roller 69 is retracted inward, the clamping rod 72 is pushed inward to re-clamp the heater 4.

[0035] Example 2: Based on Example 1, as shown in Figures 8-9, a reversing mechanism is also included, which includes a transmission shaft 81, which is rotatably mounted on the locker 1, and a hexagonal prism 811 is fixedly connected to the top of the transmission shaft 81. A column gear 82 is slidably mounted on the hexagonal prism 811, and the column gear 82 is rotatably connected to the top of the sliding frame 2. The column gear 82 is engaged with the driving gear 52, and a friction roller 83 is installed at the bottom of the transmission shaft 81. A number of convex balls 84 are evenly provided on the side walls of the friction roller 83, and a number of roller frames 85 are rotatably connected to the locker 1. The convex balls 84 drive the high-pressure pipeline to rotate, so that the support frame 3 and the protruding polyethylene inner tube rotate relative to each other more quickly, and the polyethylene inner tube is further compressed more evenly.

[0036] 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, thereby driving the transmission shaft 81 to rotate. The rotation of the transmission shaft 81 drives the friction roller 83 to rotate. The convex ball 84 on the friction roller 83 will rub the high-pressure pipe to make the high-pressure pipe rotate along the roller frame 85. The direction of rotation of the high-pressure pipe is opposite to the direction of rotation of the expansion frame 3, so that the expansion frame 3 expands the protruding part of the polyethylene inner tube and the lower pressure roller 69 presses the protruding part of the polyethylene inner tube to rotate faster, so that the expansion frame 3 expands the protruding polyethylene inner tube more fully.

[0037] Example 3: Based on Example 2, as shown in Figure 10, it also 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 repulsion between the electromagnet 9 and the permanent magnet 10 can automatically reset the heater 4.

[0038] The permanent magnet 10 is a neodymium iron boron magnet, and the permanent magnet 10 is resistant to high temperatures so that its magnetism will not be weakened.

[0039] When the protruding part of the polyethylene inner tube is flattened, the electromagnet 9 is started. After being energized, the electromagnet 9 generates magnetism and repels the permanent magnet 10, causing the heater 4 to move downward and reset. Then the motor 51 is started to reverse, and when the lower pressure roller 69 is retracted inward, the clamping rod 72 is pushed inward to re-clamp the heater 4.

[0040] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A buckling and flanging device for a high-pressure pipeline for slurry transportation, characterized in that: The invention comprises a locking device (1), a sliding frame (2) being slidably mounted on the locking device (1), a spreading frame (3) being rotatably connected to the sliding frame (2), a fixing ring (31) being fixedly connected inside the spreading frame (3), four mounting frames (32) being fixedly connected inside the spreading frame (3), a heater (4) being slidably connected to the fixing ring (31), a rotating mechanism for rotating the spreading frame (3) being provided on the sliding frame (2), a flattening mechanism for flattening a polyethylene inner tube after being spread, and a shrinking mechanism for shrinking the heater (4) being provided on the spreading frame (3) and the heater (4).

2. The buckling and flanging device for a high-pressure pipeline for slurry transportation according to claim 1 is characterized in that: The rotating mechanism comprises a motor (51), the motor (51) being fixedly connected to the sliding frame (2), the output shaft of the motor (51) being rotatably connected to the sliding frame (2), the output shaft at the bottom end of the motor (51) being fixedly connected to a driving gear (52), a gear ring (53) being installed on the inner side of the top of the support frame (3), and the driving gear (52) being meshed with the gear ring (53).

3. The buckling and flanging device for a high-pressure pipeline for slurry transportation according to claim 2, characterized in that: The flattening mechanism comprises a connecting shaft (61), the connecting shaft (61) being rotatably connected to the top of the support frame (3), a driven gear (62) being mounted on the top of the connecting shaft (61), the driving gear (52) being meshed with the driven gear (62), a worm (63) being mounted on the bottom of the connecting shaft (61), a connecting frame (64) being fixedly connected to the top of the support frame (3), four worm wheels (65) being rotatably mounted on the connecting frame (64), the worm wheels (65) being meshed with the worm (63), and the connecting frame (64) being fixedly connected to the top of the support frame (3). Four transmission wheels (66) are installed on the support frame (3), one side of each worm wheel (65) is fixedly connected to one transmission wheel (66), two transmission wheels (67) are installed on each mounting frame (32), four connecting rods (68) are installed on the support frame (3), one transmission wheel (67) is installed on each connecting rod (68), a flat belt (671) is wound between the transmission wheel (66) and the three transmission wheels (67), and a lower pressure roller (69) is fixedly connected to each connecting rod (68).

4. The buckling and flanging device for a high-pressure pipeline for slurry transportation as claimed in claim 3 is characterized in that: The retracting mechanism comprises a clamping rod (72), the fixing ring (31) is provided with four sliding grooves (71), each of the sliding grooves (71) is slidably mounted with a clamping rod (72), the bottom ends of the four clamping rods (72) are in contact with the top of the heater (4), and two return springs (73) are fixedly connected between the fixing ring (31) and the heater (4), and the two return springs (73) are symmetrically arranged.

5. The buckling and flanging device for a high-pressure pipeline for slurry transportation as claimed in claim 4 is 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).

6. The buckling and flanging device for a high-pressure pipeline for slurry transportation as claimed in claim 5, 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).

7. The buckling and flanging device for a high-pressure pipeline for slurry transportation according to claim 6, characterized in that: The permanent magnet (10) is a neodymium iron boron magnet.

8. A buckling and flanging process for a high-pressure pipeline for slurry transportation, characterized in that: The crimping and flanging device for a slurry conveying high-pressure pipeline as claimed in any one of claims 1 to 7 is used, 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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