Anti-corrosion treatment device and treatment process for interior of metal pipe fitting

Abstract

The invention relates to the field of metal product processing. The invention discloses a metal pipe fitting inner anti-corrosion treatment device and process, the metal pipe fitting inner anti-corrosion treatment device comprises a bidirectional motor, one end of a rotating shaft of the bidirectional motor is fixedly connected with a worm, the outer side of a shell of the bidirectional motor is fixedly sleeved with a fixing sleeve, the worm is fixedly sleeved with the fixing sleeve, and one end of the fixing sleeve is rotatably connected with a driving mechanism; and a spraying mechanism is arranged on the driving mechanism, and the spraying mechanism is mounted on the outer wall of the fixing sleeve. The spraying device is composed of a locking mechanism, a driving mechanism and a spraying mechanism. According to the internal anti-corrosion treatment device and process for the metal pipe fitting, a bidirectional motor is matched with a driving worm gear to drive a driving plate to deflect anticlockwise at the same time, so that a rolling wheel abuts against the inner wall of the metal pipe fitting, then the deflected rolling wheel is locked through a locking mechanism, and it is guaranteed that the device can move in the metal pipe fittings with different diameters; and the universality of the device is ensured.

Description

Technical Field

[0001] The invention relates to the field of metal product processing, and in particular to an internal anti-corrosion treatment device and a treatment process for a metal pipe. Background Art

[0002] Metal pipe fittings have a wide range of applications, including domestic water, oil and natural gas transportation. In order to extend the service life of metal pipe fittings during use, anti-corrosion layers are usually sprayed on the inner and outer walls of the metal pipe fittings to increase their rust and corrosion resistance.

[0003] The existing anti-corrosion material spraying device for the inner wall of the pipeline will first fix the pipeline, then the spray gun head will enter the interior of the pipeline, move the spray gun head, and then spray the inner wall of the pipeline. However, the existing spray gun head is usually connected to a whole long rod, which will produce obvious shaking when the spray gun head is working, and then drive the spray gun head to shake, affecting the effect of the device on the pipeline spraying; many devices in the existing technology cannot be adaptively adjusted according to different pipe diameters, resulting in that if the pipe diameter changes, the spray equipment needs to be manually adjusted, affecting the applicability of the spray equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a device and process for treating the inside of a metal pipe with corrosion protection, so as to solve the problem that the existing devices mentioned in the above background technology are difficult to ensure stable spraying of the inner wall of the metal pipe, and some existing devices cannot be adaptively adjusted according to different pipe diameters. In order to achieve the above purpose, the present invention provides the following technical solutions: a device for treating the inside of a metal pipe with corrosion protection, comprising a bidirectional motor, a worm fixedly connected to one end of the rotating shaft of the bidirectional motor, a fixed sleeve fixedly connected to the outer side of the housing of the bidirectional motor, and the fixed sleeve is on the outer side of the worm, a driving mechanism is rotatably connected to one end of the fixed sleeve, and a spraying mechanism is provided on the driving mechanism, and the spraying mechanism is installed on the outer wall of the fixed sleeve;

[0005] The outer wall of the fixed sleeve is provided with three planes, and two through slots are provided on the planes of the fixed sleeve, and an active rotating shaft is rotatably connected in the through slots, and a driving plate is fixedly connected to the side of the active rotating shaft, and two driving plates on the same plane are arranged in parallel, and a connecting plate is hinged on the two driving plates, and a rolling wheel is rotatably connected to one end of the driving plate away from the active rotating shaft;

[0006] The movable sleeves at both ends of the active rotating shaft are provided with worm wheels, and the worm wheels are meshed with the worm, a transmission tube is fixedly connected to the side of the worm wheel facing the driving plate, and the transmission tube is connected to the rolling wheel through a transmission belt, and a locking mechanism is provided on the active rotating shaft;

[0007] The worm is driven to rotate by a bidirectional motor to drive the worm wheel to rotate, so that the rolling wheel fits on the inner wall of the metal pipe and rolls, and then the rolling wheel fitted on the metal pipe is locked by a locking mechanism, and finally the driving mechanism drives the spraying mechanism to spray the inner wall of the metal pipe.

[0008] Preferably, the locking mechanism comprises a through-slotted slot provided on the side of the active rotating shaft, and a rectangular slot is provided on the side of the inner wall of the through-slotted slot;

[0009] A spline rod is inserted into the insertion slot, a first wedge block is fixedly connected to the side surface of one end of the spline rod, and one side of the first wedge block is rounded, and the first wedge block is slidably arranged in the rectangular slot;

[0010] A second wedge block is fixedly connected to the middle of the side of the spline plug rod, and the second wedge block is slidably arranged in the rectangular groove, and the inclined surface of the second wedge block is parallel to the inclined surface of the first wedge block;

[0011] A ring sleeve is rotatably sleeved on the side of the spline plug rod, and two symmetrically arranged spring expansion plates are hinged on the outer side of the ring sleeve, and a fixed plate is hinged on the end of the spring expansion plate away from the ring sleeve, and the end of the fixed plate away from the spring expansion plate is fixed on the end surface of the active rotating shaft;

[0012] A notch is formed on one end of the spline rod away from the first wedge block, and a circular end surface clamp is provided on the side facing the notch, and the circular end surface clamp is fixedly connected to the outer wall of the fixing sleeve.

[0013] Preferably, the locking mechanism further comprises an arc-shaped groove formed on the worm gear, a first spring telescopic rod is fixedly connected to one side of the inner wall of the arc-shaped groove, and a first extrusion wedge block is fixedly connected to one end of the first spring telescopic rod away from the inner wall of the arc-shaped groove;

[0014] A second spring telescopic rod is fixedly connected to the other side of the inner wall of the arc-shaped groove, a second extrusion wedge block is hinged on one end of the second spring telescopic rod away from the inner wall of the arc-shaped groove, and a tension spring is fixedly connected between the second extrusion wedge block and the second spring telescopic rod, and the second extrusion wedge block is staggered with the first extrusion wedge block.

[0015] Preferably, the driving mechanism comprises a transmission gear rotatably connected to one end of the fixed sleeve, the transmission gear is meshed with a driving gear, and the driving gear is fixedly sleeved on one end of the worm;

[0016] A first limiting groove tube is passed through the central axis of the transmission gear, a first fixed cone wheel is fixedly sleeved on the side surface of the first limiting groove tube, a first movable cone wheel is arranged on the side facing the cone surface of the first fixed cone wheel, and the first movable cone wheel is slidably sleeved on the side surface of the first limiting groove tube, a compression spring rod is fixedly connected to the end surface of the first movable cone wheel facing away from the first fixed cone wheel, and one end of the compression spring rod away from the first movable cone wheel is fixed on the side surface of the first limiting groove tube;

[0017] The driving mechanism further comprises a second limiting slot tube, the second limiting slot tube is rotatably connected to one end of the fixed sleeve, a second movable cone wheel is slidably sleeved on the side surface of the second limiting slot tube, an extrusion rod is slidably connected in the second limiting slot tube, one end of the extrusion rod located in the second limiting slot tube is fixedly connected to the second movable cone wheel, and one end of the extrusion rod abuts against one of the driving plates;

[0018] A second fixed cone wheel is fixedly sleeved on the side surface of the second limiting groove tube, and the second fixed cone wheel, the second movable cone wheel and the first movable cone wheel and the first fixed cone wheel are connected through a transmission steel belt.

[0019] Preferably, the spraying mechanism comprises six support frames fixed on the outer wall of the fixed sleeve, the six support frames are fixedly connected to a fixed bearing on one end away from the fixed sleeve, the outer ring of the fixed bearing is fixedly connected to an inner gear ring, the end surface of the inner gear ring is fixedly connected to a fixed shell, a first gear is rotatably connected to the center of the bottom of the fixed shell, a fixed gear is meshed with the first gear, and the fixed gear is fixedly connected to the left end of the second limiting groove tube, the shaft end of the first gear extends to the interior of the fixed shell and is fixedly connected to a second gear, and the second gear is rotatably connected to the interior of the fixed shell;

[0020] The second gear is meshed with six push gears, and the six push gears are connected to the bottom surface of the inner wall of the fixed shell in a circular shape with equal distances, and the push gear is meshed with a tooth plate, and the tooth plate is inserted on the side of the inner wall of the fixed shell; the end of the tooth plate located on the outside of the fixed shell is fixedly connected to a spray pipe;

[0021] A nozzle is movably inserted through the first gear and the second gear, and the nozzle is connected to the spraying pipe through a delivery pipe arranged thereon, the water inlet end of the nozzle is rotatably connected to a delivery pump, the transmission shaft of the delivery pump is connected to the second limiting groove pipe through a belt drive, and the delivery pump is installed on the left end of the fixed sleeve, the water inlet pipe of the delivery pump is connected to the water outlet of the storage box, and the storage box is installed on the side of the fixed sleeve.

[0022] Preferably, the spraying mechanism further comprises a T-shaped hinged rod hinged on the support frame, and a return spring telescopic rod is hinged between the cross bar of the T-shaped hinged rod and the support frame;

[0023] A damping block is fixedly connected to one end of the cross bar of the T-shaped hinged rod, and the damping block abuts against the inner wall of the inner gear ring.

[0024] Preferably, the number of the circular end face clamping plates is six, and L-shaped resistance rods are inserted through the three circular end face clamping plates close to the inner gear ring, and one end of the L-shaped resistance rod is fixedly connected to the ring sleeve.

[0025] Preferably, the treatment process of the metal pipe internal anti-corrosion treatment device comprises the following steps:

[0026] S1: After placing the device inside the metal pipe, the bidirectional motor cooperates with the worm to drive the worm wheel to rotate counterclockwise, so that the first extrusion wedge block in the arc groove squeezes the second wedge block, and drives the rotating shaft and the driving plate thereon to rotate counterclockwise at the same time, causing the rolling wheel to contact the inner wall of the metal pipe;

[0027] When the rolling wheel contacts the inner wall of the metal pipe, the worm wheel continues to rotate counterclockwise, increasing the resistance force of the first extrusion wedge block at the end of the first spring telescopic rod to the second wedge block, so that the second wedge block moves in the rectangular groove to the side away from the driving plate, and drives the notch of the spline plug rod end to be clamped on the clamping groove of the end face of the circular end face clamping plate, so as to limit and lock the deflected active rotating shaft;

[0028] S2: When the bidirectional motor rotates clockwise to drive the rolling wheel to contact the inner wall of the metal pipe, the transmission gear at the end of the worm drives the transmission gear to rotate counterclockwise, and under the cooperation of the first limit slot tube, the first movable bevel wheel, the first fixed bevel wheel and the second limit slot tube, the second movable bevel wheel, the second fixed bevel wheel and the transmission steel belt, the fixed gear is driven to rotate counterclockwise and the first gear and the second gear are driven to rotate clockwise at the same time, so that the push gear drives the six tooth plates to expand in a blooming shape and approach the inner wall of the metal pipe;

[0029] At the same time, when the spline rod moves and contacts the circular end face clamp, the L-shaped contact rod is pulled to move and contact one end of the T-shaped hinge rod, so that the damping block on one end of the T-shaped hinge rod is separated from the inner gear ring, thereby releasing the contact between the damping block and the inner gear ring;

[0030] S3: Finally, the bidirectional motor continues to rotate clockwise to drive the rolling wheel to roll inside the metal pipe and move left, and then the worm rotates clockwise in coordination with the transmission gear to drive the first limit slot tube and the second limit slot tube to rotate counterclockwise at the same time, so that the fixed gear drives the first gear and the fixed shell to rotate clockwise at the same time, and the second limit slot tube drives the delivery pump to run to deliver the spray paint in the storage box to the spray pipe and spray it out, so as to spray the inner wall of the metal pipe.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] In the present invention, a bidirectional motor cooperates with a driving worm gear to drive the driving plate to deflect counterclockwise at the same time, so that the rolling wheel contacts the inner wall of the metal pipe, and then the deflected rolling wheel is locked by a locking mechanism to ensure that the device can move in metal pipes of different diameters, thereby ensuring the universality of the device.

[0033] In the present invention, the bidirectional motor drives the rolling wheel to deflect and abut against the inner wall of the metal pipe, which causes the push gear to drive the six tooth plates to expand in a blooming shape and approach the inner wall of the metal pipe, thereby adjusting the distance between the spray pipe and the inner wall of the metal pipe, thereby ensuring the stability of the device spraying the inner wall of the metal pipe and the quality of the spraying.

[0034] In the present invention, a bidirectional motor drives the rolling wheel to roll inside the metal pipe and move left, and then the worm rotates clockwise and cooperates with the transmission gear to drive the first limit slot tube and the second limit slot tube to rotate counterclockwise at the same time, so that the fixed gear drives the first gear and the fixed shell to rotate clockwise at the same time, and the second limit slot tube drives the delivery pump to run to deliver the spray material in the storage box to the spray pipe and spray it out, spraying the inner wall of the metal pipe, ensuring that the device moves in the metal pipe while spraying the inner wall of the metal pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0036] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0037] Figure 3 It is a cross-sectional view of the three-dimensional structure of the fixing sleeve of the present invention;

[0038] Figure 4 It is a three-dimensional structural schematic diagram of the transmission belt and the worm gear of the present invention;

[0039] Figure 5 For the present invention Figure 4 A magnified view of the structure at center;

[0040] Figure 6 It is a schematic diagram of the three-dimensional structure of the ring sleeve and the circular end surface clamping plate of the present invention;

[0041] Figure 7 The three-dimensional structural section of the worm gear of the present invention is Figure 1 ;

[0042] Figure 8 The three-dimensional structural section of the worm gear of the present invention is Figure 2 ;

[0043] Fig. 9 It is a three-dimensional structural schematic diagram of the retractable rod of the return spring and the damping block of the present invention;

[0044] Fig.10 It is a schematic diagram of the three-dimensional structure of the transmission steel belt of the present invention;

[0045] Fig.11 It is a schematic diagram of the three-dimensional structure of the second movable cone wheel and the extrusion rod of the present invention;

[0046] Fig.12 It is a schematic diagram of the three-dimensional structure of the fixed bearing and the inner gear ring of the present invention.

[0047] In the figure: 1, bidirectional motor; 2, worm; 3, fixed sleeve; 4, plane; 5, through slot; 6, active rotating shaft; 7, driving plate; 8, rolling wheel; 9, transmission belt; 10, worm wheel; 11, transmission tube; 12, locking mechanism; 121, through slot; 122, spline plug rod; 123, first wedge block; 124, second wedge block; 125, rectangular slot; 126, ring sleeve; 127, spring telescopic plate; 128, fixed plate; 129, circular end face clamping plate; 1210, arc slot; 1211, first spring telescopic rod; 1212, first extrusion wedge block; 1213, second spring telescopic rod; 1214, second extrusion wedge block; 1215, notch; 1216, tension spring; 13, driving mechanism; 131, transmission gear; 132, driving gear; 133, first a limiting groove tube; 134, a first fixed cone wheel; 135, a first movable cone wheel; 136, a compression spring rod; 137, a second limiting groove tube; 138, a second movable cone wheel; 139, an extrusion rod; 1310, a second fixed cone wheel; 1311, a transmission belt; 14, a spraying mechanism; 141, a support frame; 142, a fixed bearing; 143, an inner gear ring; 144, a fixed shell; 145, a first gear; 146, a second gear; 147, a push gear; 148, a toothed plate; 149, a spraying tube; 1410, a storage box; 1411, a spray pipe; 1412, a delivery pump; 1413, an L-shaped resistance rod; 1414, a T-shaped hinged rod; 1415, a reset spring telescopic rod; 1416, a damping block; 1417, a belt; 1418, a fixed gear; 15, a connecting plate. DETAILED DESCRIPTION

[0048] 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0049] See also Figures 1 to 12The present invention provides a technical solution: a metal pipe internal anti-corrosion treatment device, comprising a bidirectional motor 1, a worm 2 is fixedly connected to one end of the rotating shaft of the bidirectional motor 1, a fixed sleeve 3 is fixedly sleeved on the outer side of the housing of the bidirectional motor 1, and the fixed sleeve 3 is on the outer side of the worm 2, a driving mechanism 13 is rotatably connected to one end of the fixed sleeve 3, and a spraying mechanism 14 is arranged on the driving mechanism 13, and the spraying mechanism 14 is installed on the outer wall of the fixed sleeve 3;

[0050] The outer wall of the fixed sleeve 3 is provided with three planes 4, and two through slots 5 are provided at the planes 4 of the fixed sleeve 3. An active rotating shaft 6 is rotatably connected in the through slot 5, and a driving plate 7 is fixedly connected to the side of the active rotating shaft 6. Two driving plates 7 on the same plane are arranged in parallel, and a connecting plate 15 is hinged on the two driving plates 7. A rolling wheel 8 is rotatably connected to one end of the driving plate 7 away from the active rotating shaft 6;

[0051] A worm gear 10 is provided on both ends of the active rotating shaft 6, and the worm gear 10 is meshed with the worm 2. A transmission tube 11 is fixedly connected to the side of the worm gear 10 facing the driving plate 7, and the transmission tube 11 is connected to the rolling wheel 8 through a transmission belt 9. A locking mechanism 12 is provided on the active rotating shaft 6.

[0052] The worm 2 is driven by the bidirectional motor 1 to rotate the worm wheel 10, so that the rolling wheel 8 is attached to the inner wall of the metal pipe and rolls, and then the rolling wheel 8 attached to the metal pipe is locked by the locking mechanism 12, and finally the spraying mechanism 14 is driven by the driving mechanism 13 to spray the inner wall of the metal pipe.

[0053] In this embodiment, Figures 1 to 12 As shown, the locking mechanism 12 includes a through slot 121 formed on the side of the active rotating shaft 6, and a rectangular slot 125 is formed on the side of the inner wall of the through slot 121;

[0054] A spline rod 122 is inserted into the insertion slot 121, and a first wedge block 123 is fixedly connected to the side surface of one end of the spline rod 122, and one side of the first wedge block 123 is rounded, and the first wedge block 123 is slidably arranged in the rectangular slot 125;

[0055] A second wedge block 124 is fixedly connected to the middle of the side of the spline insert rod 122, and the second wedge block 124 is slidably disposed in the rectangular groove 125, and the inclined surface of the second wedge block 124 is parallel to the inclined surface of the first wedge block 123;

[0056] A ring sleeve 126 is rotatably sleeved on the side of the spline rod 122, and two symmetrically arranged spring expansion plates 127 are hinged on the outer side of the ring sleeve 126, and a fixed plate 128 is hinged on the end of the spring expansion plate 127 away from the ring sleeve 126, and the end of the fixed plate 128 away from the spring expansion plate 127 is fixed to the end face of the active rotating shaft 6; the spring expansion plate 127 applies a thrust to the spline rod 122 to ensure that one end of the spline rod 122 is stably in contact with the inside of the through slot 121.

[0057] A notch 1215 is formed on one end of the spline rod 122 away from the first wedge block 123, and a circular end face clamp 129 is provided on the side facing the notch 1215, and the circular end face clamp 129 is fixedly connected to the outer wall of the fixed sleeve 3. The spline rod 122 abuts against the circular end face clamp 129 through the notch 1215, and the deflected spline rod 122 is locked, and when the notch 1215 at the end of the spline rod 122 is clamped on the circular end face clamp 129, the first wedge block 123 simultaneously moves to the side close to the worm gear 10;

[0058] When the worm gear 10 rotates counterclockwise relative to the active rotating shaft 6, when the second extruding wedge block 1214 contacts the first wedge block 123, the second extruding wedge block 1214 and the second spring telescopic rod 1213 are simultaneously deflected to deflect into the through slot 121; conversely, when the worm gear 10 rotates clockwise relative to the active rotating shaft 6, the second extruding wedge block 1214 squeezes the inclined surface of the first wedge block 123, so that the first wedge block 123 drives the spline plug rod 122 to move to the side close to the driving plate 7 at the same time, completing the resetting of the spline plug rod 122. At this time, the worm gear 10 continues to rotate clockwise, driving the driving plate 7 to deflect and reset, and the device is folded to complete the resetting of the device.

[0059] In this embodiment, Figures 1 to 12 As shown, the locking mechanism 12 also includes an arc groove 1210 formed on the worm gear 10, a first spring telescopic rod 1211 is fixedly connected to one side of the inner wall of the arc groove 1210, and a first extrusion wedge block 1212 is fixedly connected to one end of the first spring telescopic rod 1211 away from the inner wall of the arc groove 1210;

[0060] A second spring telescopic rod 1213 is fixedly connected to the other side of the inner wall of the arc groove 1210, and a second extrusion wedge block 1214 is hingedly connected to one end of the second spring telescopic rod 1213 away from the inner wall of the arc groove 1210. The second extrusion wedge block 1214 is outside the arc groove 1210, and a tension spring 1216 is fixedly connected between the second extrusion wedge block 1214 and the second spring telescopic rod 1213. The second extrusion wedge block 1214 is staggered with the first extrusion wedge block 1212. When the second extrusion wedge block 1214 is squeezed by the rounded corner of the first wedge block 123, it will deflect, and then the tension spring 1216 will drive the second extrusion wedge block 1214 to reset. When the inclined surface of the second extrusion wedge block 1214 conflicts with the first wedge block 123, the first wedge block 123 will not deflect.

[0061] In this embodiment, Figures 1 to 12 As shown, the driving mechanism 13 includes a transmission gear 131 rotatably connected to one end of the fixed sleeve 3, a driving gear 132 is meshed on the transmission gear 131, and the driving gear 132 is fixedly sleeved on one end of the worm 2;

[0062] A first limiting groove tube 133 is passed through the central axis of the transmission gear 131, a first fixed cone wheel 134 is fixedly sleeved on the side of the first limiting groove tube 133, a first movable cone wheel 135 is arranged on the side facing the cone surface of the first fixed cone wheel 134, and the first movable cone wheel 135 is slidably sleeved on the side of the first limiting groove tube 133, a compression spring rod 136 is fixedly connected to the end surface of the first movable cone wheel 135 facing away from the first fixed cone wheel 134, and one end of the compression spring rod 136 away from the first movable cone wheel 135 is fixed on the side of the first limiting groove tube 133;

[0063] The driving mechanism 13 also includes a second limiting groove tube 137, which is rotatably connected to one end of the fixed sleeve 3, and a second movable cone wheel 138 is slidably sleeved on the side of the second limiting groove tube 137. An extrusion rod 139 is slidably connected inside the second limiting groove tube 137. One end of the extrusion rod 139 located inside the second limiting groove tube 137 is fixedly connected to the second movable cone wheel 138, and one end of the extrusion rod 139 abuts against one of the driving plates 7; when the extrusion rod 139 is squeezed by the driving plate 7, the second movable cone wheel 138 is pushed to slide on the second limiting groove tube 137.

[0064] A second fixed cone wheel 1310 is fixedly sleeved on the side surface of the second limiting groove tube 137 , and the second fixed cone wheel 1310 , the second movable cone wheel 138 and the first movable cone wheel 135 and the first fixed cone wheel 134 are connected through a transmission steel belt 1311 .

[0065] In this embodiment, Figures 1 to 12As shown, the spraying mechanism 14 includes six support frames 141 fixed on the outer wall of the fixed sleeve 3, and the six support frames 141 are fixedly connected to a fixed bearing 142 on one end away from the fixed sleeve 3, and an inner gear ring 143 is fixedly connected to the outer ring of the fixed bearing 142, and a fixed shell 144 is fixedly connected to the end surface of the inner gear ring 143, and a first gear 145 is rotatably connected to the center of the bottom of the fixed shell 144, and a fixed gear 1418 is meshed on the first gear 145, and the fixed gear 1418 is fixedly connected to the left end of the second limiting groove tube 137, and the shaft end of the first gear 145 extends to the inside of the fixed shell 144 and is fixedly connected to the second gear 146, and the second gear 146 is rotatably connected to the inside of the fixed shell 144;

[0066] Six push gears 147 are meshed on the second gear 146, and the six push gears 147 are connected to the bottom surface of the inner wall of the fixed shell 144 in a circular shape with equal distances, and a tooth plate 148 is meshed on the push gear 147, and the tooth plate 148 is inserted on the side of the inner wall of the fixed shell 144; a spray pipe 149 is fixedly connected to one end of the tooth plate 148 located on the outer side of the fixed shell 144;

[0067] A nozzle 1411 movably penetrates the first gear 145 and the second gear 146, and the nozzle 1411 is connected to the spraying pipe 149 through a delivery pipe arranged thereon, and the water inlet end of the nozzle 1411 is rotatably connected to a delivery pump 1412, and the transmission shaft of the delivery pump 1412 is connected to the second limiting groove pipe 137 through a belt 1417, and the delivery pump 1412 is installed on the left end of the fixed sleeve 3, and the water inlet pipe of the delivery pump 1412 is connected to the water outlet of the storage box 1410, and the storage box 1410 is installed on the side of the fixed sleeve 3.

[0068] In this embodiment, Figures 1 to 12 As shown, the spraying mechanism 14 further includes a T-shaped hinged rod 1414 hinged on the support frame 141, and a return spring telescopic rod 1415 is hinged between the cross bar of the T-shaped hinged rod 1414 and the support frame 141;

[0069] A damping block 1416 is fixedly connected to one end of the crossbar of the T-shaped hinge rod 1414 , and the damping block 1416 abuts against the inner wall of the inner gear ring 143 .

[0070] In this embodiment, Figures 1 to 12 As shown, there are six circular end surface clamping plates 129 , and L-shaped abutment rods 1413 are inserted through the three circular end surface clamping plates 129 close to the inner gear ring 143 , and one end of the L-shaped abutment rod 1413 is fixedly connected to the ring sleeve 126 .

[0071] The processing technology and advantages of the present invention: The processing technology of the anti-corrosion treatment device for metal pipe fittings has the following working process:

[0072] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 As shown:

[0073] S1: When the device is performing anti-corrosion treatment on the inner wall of a metal pipe, after placing the device inside the metal pipe, the bidirectional motor 1 is started to drive the worm 2 to rotate clockwise, thereby driving the worm wheel 10 to rotate counterclockwise. At this time, the first extrusion wedge block 1212 in the arc groove 1210 squeezes the second wedge block 124, causing the second wedge block 124 to push the active rotating shaft 6 and the driving plate 7 thereon to rotate counterclockwise at the same time, thereby driving the rolling wheel 8 to contact the inner wall of the metal pipe;

[0074] When the rolling wheel 8 contacts the inner wall of the metal pipe, the worm gear 10 continues to rotate counterclockwise, increasing the resistance of the first extruding wedge block 1212 at the end of the first spring telescopic rod 1211 to the second wedge block 124, so that the second wedge block 124 moves in the rectangular groove 125 to the side away from the driving plate 7, and drives the notch 1215 at the end of the spline plug rod 122 to be clamped on the clamping groove on the end face of the circular end face clamping plate 129, so as to limit and lock the deflected active rotating shaft 6;

[0075] When the second wedge block 124 drives the spline rod 122 to move, the second wedge block 124 is compressed when it deflects. When the notch 1215 at the end of the spline rod 122 is clamped on the circular end surface clamping plate 129, the spring expansion plate 127 has its own restoring elastic force to increase the resistance between the notch 1215 and the circular end surface clamping plate 129.

[0076] S2: When the bidirectional motor 1 rotates clockwise to drive the rolling wheel 8 to contact the inner wall of the metal pipe, the transmission gear 131 at the end of the worm 2 drives the transmission gear 131 to rotate counterclockwise, and under the cooperation of the first limiting groove tube 133, the first movable cone wheel 135, the first fixed cone wheel 134, the second limiting groove tube 137, the second movable cone wheel 138, the second fixed cone wheel 1310, and the transmission steel belt 1311, the fixed gear 1418 is driven to rotate counterclockwise, and the At this time, the damping block 1416 at the end of the T-shaped hinge rod 1414 abuts against the inner wall of the inner gear ring 143. When the fixed gear 1418 drives the first gear 145 and the second gear 146 to rotate clockwise at the same time, the fixed shell 144 does not rotate, thereby ensuring that the push gear 147 rotates counterclockwise to drive the six tooth plates 148 to spread out in a blooming shape and approach the inner wall of the metal pipe, so that the device adjusts the distance between the spray pipe 149 and the inner wall of the metal pipe according to the deflection amount of the driving plate 7;

[0077] The extrusion rod 139 is pushed to move leftward by the deflection of the driving plate 7, driving the second movable cone wheel 138 to move leftward on the second limiting groove tube 137, thereby shortening the distance between the second movable cone wheel 138 and the second fixed cone wheel 1310. At this time, the first movable cone wheel 135 on the lower side is away from the first fixed cone wheel 134 under the action of the extrusion force of the transmission steel belt 1311, changing the transmission ratio between the first movable cone wheel 135, the first fixed cone wheel 134 and the second movable cone wheel 138, the second fixed cone wheel 1310, ensuring that the larger the diameter of the inner wall of the metal pipe, the faster the speed of the second limiting groove tube 137 driving the delivery pump 1412 to run, ensuring that the device can spray the inner wall of metal pipes of different diameters with uniform thickness;

[0078] S3: At the same time, when the spline rod 122 moves and contacts the circular end surface clamping plate 129, the L-shaped contact rod 1413 is pulled to move and contact one end of the T-shaped hinge rod 1414, so that the damping block 1416 on one end of the T-shaped hinge rod 1414 is separated from the inner gear ring 143, and the damping block 1416 is released from the inner gear ring 143. When the subsequent fixed gear 1418 drives the first gear 145 to rotate, the inner gear ring 143 and the fixed shell 144 can rotate simultaneously to spray the inner wall of the metal pipe;

[0079] Finally, the bidirectional motor 1 continues to rotate clockwise to drive the worm gear 10 to rotate counterclockwise, and under the action of the transmission belt 9, the rolling wheel 8 is driven to roll inside the metal pipe and move to the left, and then the clockwise rotation of the worm 2 cooperates with the transmission gear 131 to drive the first limiting groove tube 133 and the second limiting groove tube 137 to rotate counterclockwise at the same time, so that the fixed gear 1418 drives the first gear 145 and the fixed shell 144 to rotate clockwise at the same time, and the second limiting groove tube 137 drives the delivery pump 1412 to run to deliver the spray paint in the storage box 1410 to the spray pipe 149 and spray it out, so as to spray the inner wall of the metal pipe.

[0080] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for treating internal corrosion of metal pipes, comprising a bidirectional motor (1), characterized in that: A worm (2) is fixedly connected to one end of the rotating shaft of the bidirectional motor (1); a fixed sleeve (3) is fixedly sleeved on the outer side of the housing of the bidirectional motor (1); the fixed sleeve (3) is on the outer side of the worm (2); a driving mechanism (13) is rotatably connected to one end of the fixed sleeve (3); a spraying mechanism (14) is provided on the driving mechanism (13); and the spraying mechanism (14) is installed on the outer wall of the fixed sleeve (3); The outer wall of the fixing sleeve (3) is provided with three planes (4), and two through grooves (5) are provided on the planes (4) of the fixing sleeve (3), and an active rotating shaft (6) is rotatably connected in the through groove (5), and a driving plate (7) is fixedly connected to the side of the active rotating shaft (6), and two driving plates (7) on the same plane are arranged in parallel, and a connecting plate (15) is hinged on the two driving plates (7), and a rolling wheel (8) is rotatably connected to one end of the driving plate (7) away from the active rotating shaft (6); A worm gear (10) is provided on movable sleeves at both ends of the active rotating shaft (6), and the worm gear (10) is meshed with the worm (2); a transmission tube (11) is fixedly connected to the side of the worm gear (10) facing the driving plate (7), and the transmission tube (11) is connected to the rolling wheel (8) by a transmission belt (9); and a locking mechanism (12) is provided on the active rotating shaft (6); The worm (2) is driven to rotate by a bidirectional motor (1) to drive the worm wheel (10) to rotate, so that the rolling wheel (8) is attached to the inner wall of the metal pipe and rolls, and then the rolling wheel (8) attached to the metal pipe is locked by a locking mechanism (12), and finally the spraying mechanism (14) is driven by a driving mechanism (13) to spray the inner wall of the metal pipe; The locking mechanism (12) comprises a through-slot (121) formed on the side of the active rotating shaft (6), and a rectangular groove (125) is formed on the side of the inner wall of the through-slot (121); A spline rod (122) is inserted into the insertion slot (121), a first wedge block (123) is fixedly connected to the side surface of one end of the spline rod (122), and one side of the first wedge block (123) is rounded, and the first wedge block (123) is slidably arranged in the rectangular slot (125).

2. The device for treating internal corrosion of a metal pipe according to claim 1, characterized in that: A second wedge block (124) is fixedly connected to the middle of the side of the spline plug rod (122), and the second wedge block (124) is slidably arranged in the rectangular groove (125), and the inclined surface of the second wedge block (124) is parallel to the inclined surface of the first wedge block (123); A ring sleeve (126) is rotatably sleeved on the side of the spline plug rod (122), and two symmetrically arranged spring expansion plates (127) are hinged on the outer side of the ring sleeve (126), and a fixed plate (128) is hinged on one end of the spring expansion plate (127) away from the ring sleeve (126), and one end of the fixed plate (128) away from the spring expansion plate (127) is fixed to the end surface of the active rotating shaft (6); A notch (1215) is provided on one end of the spline rod (122) away from the first wedge block (123), and a circular end face clamp (129) is provided on the side facing the notch (1215), wherein the circular end face clamp (129) is fixedly connected to the outer wall of the fixing sleeve (3).

3. The device for treating internal corrosion of a metal pipe according to claim 2, characterized in that: The locking mechanism (12) further comprises an arc-shaped groove (1210) formed on the worm gear (10), a first spring telescopic rod (1211) being fixedly connected to one side of the inner wall of the arc-shaped groove (1210), and a first extrusion wedge block (1212) being fixedly connected to one end of the first spring telescopic rod (1211) away from the inner wall of the arc-shaped groove (1210); A second spring telescopic rod (1213) is fixedly connected to the other side of the inner wall of the arc-shaped groove (1210); a second extrusion wedge block (1214) is hingedly connected to one end of the second spring telescopic rod (1213) away from the inner wall of the arc-shaped groove (1210); a tension spring (1216) is fixedly connected between the second extrusion wedge block (1214) and the second spring telescopic rod (1213); and the second extrusion wedge block (1214) and the first extrusion wedge block (1212) are staggered.

4. The device for treating internal corrosion of a metal pipe according to claim 1, characterized in that: The driving mechanism (13) comprises a transmission gear (131) rotatably connected to one end of the fixed sleeve (3), a driving gear (132) meshing with the transmission gear (131), and the driving gear (132) is fixedly sleeved on one end of the worm (2); A first limiting groove tube (133) passes through the central axis of the transmission gear (131); a first fixed cone wheel (134) is fixedly sleeved on the side of the first limiting groove tube (133); a first movable cone wheel (135) is provided on the side facing the cone surface of the first fixed cone wheel (134); and the first movable cone wheel (135) is slidably sleeved on the side of the first limiting groove tube (133); a compression spring rod (136) is fixedly connected on the end surface of the first movable cone wheel (135) facing away from the first fixed cone wheel (134); and one end of the compression spring rod (136) away from the first movable cone wheel (135) is fixed on the side of the first limiting groove tube (133); The driving mechanism (13) further comprises a second limiting groove tube (137), the second limiting groove tube (137) being rotatably connected to one end of the fixing sleeve (3), a second movable cone wheel (138) being slidably sleeved on the side surface of the second limiting groove tube (137), an extrusion rod (139) being slidably connected inside the second limiting groove tube (137), one end of the extrusion rod (139) being located inside the second limiting groove tube (137) being fixedly connected to the second movable cone wheel (138), and one end of the extrusion rod (139) being abutted against one of the driving plates (7); A second fixed cone wheel (1310) is fixedly sleeved on the side surface of the second limiting groove tube (137), and the second fixed cone wheel (1310), the second movable cone wheel (138) and the first movable cone wheel (135) and the first fixed cone wheel (134) are connected in transmission via a transmission steel belt (1311).

5. The device for treating internal corrosion of a metal pipe according to claim 1, characterized in that: The spraying mechanism (14) comprises six support frames (141) fixed on the outer wall of the fixed sleeve (3), and a fixed bearing (142) is fixedly connected to one end of the six support frames (141) away from the fixed sleeve (3); an inner gear ring (143) is fixedly connected to the outer ring of the fixed bearing (142), and a fixed shell (144) is fixedly connected to the end surface of the inner gear ring (143); a first gear (145) is rotatably connected to the center of the bottom of the fixed shell (144), a fixed gear (1418) is meshed with the first gear (145), and the fixed gear (1418) is fixedly connected to the left end of the second limiting groove tube (137); the shaft end of the first gear (145) extends to the inside of the fixed shell (144) and is fixedly connected to the second gear (146), and the second gear (146) is rotatably connected to the inside of the fixed shell (144); The second gear (146) is meshed with six push gears (147), and the six push gears (147) are connected to the bottom surface of the inner wall of the fixed shell (144) in a circular shape and equidistantly, and the push gear (147) is meshed with a tooth plate (148), and the tooth plate (148) is inserted on the side surface of the inner wall of the fixed shell (144); the end of the tooth plate (148) located on the outside of the fixed shell (144) is fixedly connected to a spray pipe (149); A nozzle (1411) is movably passed through the first gear (145) and the second gear (146), and the nozzle (1411) is connected to the spraying pipe (149) through a delivery pipe arranged thereon; a delivery pump (1412) is rotatably connected to the water inlet end of the nozzle (1411); a transmission shaft of the delivery pump (1412) is connected to the second limit groove pipe (137) by a belt (1417); the delivery pump (1412) is installed on the left end of the fixed sleeve (3); the water inlet pipe of the delivery pump (1412) is connected to the water outlet of the storage box (1410), and the storage box (1410) is installed on the side of the fixed sleeve (3).

6. The device for treating internal corrosion of a metal pipe according to claim 5, characterized in that: The spraying mechanism (14) further comprises a T-shaped hinged rod (1414) hinged on the support frame (141), and a return spring telescopic rod (1415) is hinged between the cross bar of the T-shaped hinged rod (1414) and the support frame (141); A damping block (1416) is fixedly connected to one end of the crossbar of the T-shaped hinged rod (1414), and the damping block (1416) abuts against the inner wall of the inner gear ring (143).

7. The device for treating internal corrosion of a metal pipe according to claim 2, characterized in that: The number of the circular end face clamping plates (129) is six, and three of the circular end face clamping plates (129) close to the inner gear ring (143) are interspersed with L-shaped resistance rods (1413), and one end of the L-shaped resistance rod (1413) is fixedly connected to the ring sleeve (126).

8. A treatment process of a metal pipe internal anti-corrosion treatment device, using a metal pipe internal anti-corrosion treatment device as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1: After the device is placed inside the metal pipe, the bidirectional motor (1) cooperates with the worm (2) to drive the worm wheel (10) to rotate counterclockwise, so that the first extrusion wedge block (1212) in the arc groove (1210) squeezes the second wedge block (124), and drives the rotating shaft (6) and the driving plate (7) thereon to rotate counterclockwise at the same time, so that the rolling wheel (8) contacts the inner wall of the metal pipe; When the rolling wheel (8) contacts the inner wall of the metal pipe, the worm gear (10) continues to rotate counterclockwise, increasing the contact force of the first extrusion wedge block (1212) at the end of the first spring telescopic rod (1211) on the second wedge block (124), so that the second wedge block (124) moves in the rectangular groove (125) to the side away from the driving plate (7), and drives the notch (1215) at the end of the spline plug rod (122) to be clamped on the clamping groove on the end face of the circular end face clamping plate (129), thereby limiting and locking the deflected active rotating shaft (6); S2: When the bidirectional motor (1) rotates clockwise to drive the rolling wheel (8) to contact the inner wall of the metal pipe, the transmission gear (131) at the end of the worm (2) drives the transmission gear (131) to rotate counterclockwise, and under the cooperation of the first limiting groove tube (133), the first movable cone wheel (135), the first fixed cone wheel (134), the second limiting groove tube (137), the second movable cone wheel (138), the second fixed cone wheel (1310), and the transmission steel belt (1311), the fixed gear (1418) is driven to rotate counterclockwise and drive the first gear (145) and the second gear (146) to rotate clockwise at the same time, so that the push gear (147) drives the six tooth plates (148) to spread out in a blooming shape and approach the inner wall of the metal pipe; At the same time, when the spline plug rod (122) moves and contacts the circular end surface clamping plate (129), the L-shaped contact rod (1413) is pulled to move and contact one end of the T-shaped hinge rod (1414), so that the damping block (1416) on one end of the T-shaped hinge rod (1414) is separated from the inner gear ring (143), thereby releasing the damping block (1416) from contacting the inner gear ring (143); S3: Finally, the bidirectional motor (1) continues to rotate clockwise to drive the rolling wheel (8) to roll inside the metal pipe and move to the left, and then the worm (2) rotates clockwise in coordination with the transmission gear (131) to drive the first limit slot tube (133) and the second limit slot tube (137) to rotate counterclockwise at the same time, so that the fixed gear (1418) drives the first gear (145) and the fixed shell (144) to rotate clockwise at the same time, and the second limit slot tube (137) drives the delivery pump (1412) to operate to deliver the spray paint in the storage box (1410) to the spray pipe (149) and spray it out, so as to spray the inner wall of the metal pipe.

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