Plastic pipe inner wall spraying device

Abstract

The utility model belongs to the technical field of spraying devices, and particularly relates to a plastic pipe inner wall spraying device which comprises a penetrating pipe, a sleeve is assembled at one end of the penetrating pipe in a rotating mode, a wheel frame is assembled outside the penetrating pipe in an annular array type folding mode, and idler wheels are assembled at the two ends of the wheel frame in a rotating mode. The outer wall of the passing pipe is provided with a movable rotation driving structure in an annular array mode, the movable rotation driving structure can separately drive the casing pipe to rotate through rotation of rollers, and the outer wall of one end of the casing pipe is fixedly sleeved with a first bevel gear and a second bevel gear. A wheel shaft of the roller close to the third rotating arm is in transmission connection with the adjacent double-chain-wheel pipe through a sleeved first chain, and the double-chain-wheel pipe is in transmission connection with the adjacent first bevel gear through a sleeved second chain. According to the utility model, the nozzle can rotate at a high speed, at a low speed and driven to rotate by reaction force of sprayed materials, the application range is wide, and power equipment control is not needed.

Description

Technical Field

[0001] The utility model belongs to the technical field of spraying devices, and in particular relates to a spraying device for the inner wall of a plastic pipe. Background Art

[0002] The in-pipe spraying device is a device used to prevent corrosion inside pipelines and improve transportation efficiency. It extends the service life of the pipeline and improves its transportation capacity by coating a layer of protective material on the inner wall of the pipeline. The device used to complete the spraying work is generally called a "pipeline robot."

[0003] Problems with existing technologies:

[0004] Most of the in-pipe spraying devices use pipeline robots for spraying operations. Among them, the nozzles used for spraying paint are mostly rotatable to ensure sufficient coverage of the paint. There are generally two ways to drive the nozzle to rotate. One is to use the reaction force when the bent nozzle is sprayed, and the other is to use electric equipment to drive the rotation. The former is driven by reaction force, and the rotation speed of the nozzle is mostly fixed, and the speed is mostly not adjustable. Although the speed can be increased by increasing the injection pressure, it will cause excessive consumption of paint and increase the energy consumption of injection. The latter is driven by electric equipment, which will generate additional electricity consumption on the premise of generating energy consumption for injection. Utility Model Content

[0005] The utility model aims to provide a plastic pipe inner wall spraying device, which can enable the spray head to have three forms of high-speed rotation, low-speed rotation and spray reaction force driven rotation, has a wide range of applications, and does not require power equipment control.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A plastic pipe inner wall spraying device comprises a running pipe, one end of which is rotatably assembled with a sleeve, the outer portion of the running pipe is folded and assembled with a wheel frame in an annular array, both ends of the wheel frame are rotatably assembled with rollers, and the outer wall of the running pipe is provided with a moving driving structure in an annular array for detachably driving the sleeve to rotate by means of the rotation of the rollers;

[0008] The outer wall of one end of the sleeve is respectively fixedly sleeved with a bevel gear 1 and a bevel gear 2, and the bevel gear 1 is arranged on the inner side of the bevel gear 2;

[0009] The two ends of the middle part of the wheel frame are rotatably connected with a rotating arm 1 and a rotating arm 3 respectively, and the outer walls of the two ends of the rotating arm 3 are rotatably mounted with a double sprocket tube and a bevel gear 1 respectively, and the wheel axle of the roller close to the rotating arm 3 is connected to the adjacent double sprocket tube through a sleeved chain 1, and the double sprocket tube is connected to the adjacent bevel gear 1 through a sleeved chain 2.

[0010] The mobile driving structure includes a bevel gear three rotatably installed on the outer wall of the travel tube and a rotating shaft, one end of the bevel gear three is fixedly assembled with a bevel gear two meshing with the bevel gear one, one end of the rotating shaft is fixedly assembled with a bevel gear four meshing with the bevel gear three, the outer wall of one end of the rotating shaft is provided with a wall straight groove in an array manner, one end of the rotating shaft is slidably sleeved with a double-tooth tube, and the inner wall of the double-tooth tube is provided with an array of protrusions slidably embedded in the wall straight groove, the outer wall fixed sleeves at both ends of the double-tooth tube are provided with a bevel gear five and a bevel gear six respectively for meshing with the bevel gear one and the bevel gear two, the outer wall movable sleeve in the middle of the double-tooth tube is provided with a wall tube, and the outer wall of the wall tube is connected to a connecting rod.

[0011] The meshing transmission ratio between the helical gear 1 and the helical gear 5 is greater than the meshing transmission ratio between the helical gear 2 and the helical gear 6.

[0012] The outer wall of the middle part of the running tube is provided with gear holes in an array, and the three gear holes represent the low speed gear, the neutral gear and the high speed gear in sequence from one end containing the sleeve to the other end.

[0013] A shift tube is movably sleeved on the outer wall of the middle part of the traveling tube, and a hook for hooking the inside of the corresponding gear position hole is rotatably installed on the outer wall of the shift tube, and the ends of all the connecting rods are fixedly connected to the outer wall of the shift tube.

[0014] The other end of the sleeve is fixedly connected to a nozzle, and the outer wall of the nozzle is rotatably connected to a bent nozzle in an annular array.

[0015] A spray liquid pipe for providing paint is connected through the interior of the running pipe, and one end of the spray liquid pipe is connected to the spray head in a sealing and rotatable manner.

[0016] A sliding tube is provided on the sliding sleeve of one end of the traveling tube away from the sleeve, and a spring is provided between one end of the sliding tube and one end of the traveling tube. The sliding tube is connected to the first rotating arm through the second rotating arm.

[0017] The technical effects achieved by the utility model are:

[0018] The utility model adopts the arrangement of the movable driving structure to enable the nozzle to have three forms of high-speed rotation, low-speed rotation and rotation driven by the reaction force of the spray material, so that the spraying device can be applicable to spraying operations of various pipeline paths, whether it is a straight pipe, a curved pipe or a pipe with different diameters, and the arrangement of the spring can also ensure that each roller is in close contact with the inner wall of the pipe, so the application range is wide. In addition, when the rotation of the nozzle is driven by the roller, the power of its rotation spraying does not need to be controlled by a power device, and when the rotation of the nozzle is driven by the reaction force of the spray material, the power of its rotation spraying also does not need to be controlled by a power device, and effective spraying operations can be completed without the need for the drive of any electric equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view structural diagram of the spraying device provided in an embodiment of the utility model;

[0020] Figure 2 It is a driving integration diagram of a single mobile driving structure provided by an embodiment of the utility model;

[0021] Figure 3 yes Figure 1 The local enlarged structure diagram at A in the middle;

[0022] Figure 4 yes Figure 2 A local enlarged structural diagram of point B in the middle.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Traveling pipe; 101. Casing; 102. Nozzle; 103. Bending nozzle; 104. Bevel gear one; 105. Bevel gear two; 106. Shift hole; 2. Wheel frame; 201. Roller; 202. Rotating arm one; 203. Rotating arm two; 204. Sliding pipe; 205. Spring; 206. Rotating arm three; 207. Double sprocket tube; 208. Chain one; 209. Bevel gear one; 210. Chain two; 3. Spraying liquid tube; 4. Moving driving structure; 401. Bevel gear three; 402. Bevel gear two; 403. Rotating shaft; 404. Bevel gear four; 405. Wall straight groove; 406. Double tooth tube; 407. Bevel gear five; 408. Bevel gear six; 409. Wall tube; 410. Connecting rod; 411. Shift tube; 412. Hook. DETAILED DESCRIPTION

[0025] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0026] like Figure 1-4 As shown, a plastic pipe inner wall spraying device comprises a running pipe 1, one end of which is rotatably assembled with a sleeve 101, the outer wall of one end of the sleeve 101 is respectively fixedly sleeved with a bevel gear 104 and a bevel gear 2 105, and the bevel gear 104 is arranged on the inner side of the bevel gear 2 105, the other end of the sleeve 101 is fixedly connected with a spray head 102, the outer wall of the spray head 102 is rotatably connected with a bent spray pipe 103 in a ring array, the interior of the running pipe 1 is through-connected with a spray liquid pipe 3 for providing paint, and one end of the spray liquid pipe 3 is rotatably connected to the spray head 102 in a sealing manner.

[0027] See attached Figure 1-Figure 2The outer annular array of the traveling tube 1 is foldably assembled with a wheel frame 2, and rollers 201 are rotatably assembled at both ends of the wheel frame 2. The two ends of the middle part of the wheel frame 2 are rotatably connected with a rotating arm 1 202 and a rotating arm 3 206 respectively. A sliding tube 204 is slidably sleeved on the end of the traveling tube 1 away from the sleeve 101, and a spring 205 is arranged between one end of the sliding tube 204 and one end of the traveling tube 1, and the sliding tube 204 is connected to the rotating arm 1 202 through the rotating arm 203.

[0028] According to the above structure, when the spraying device moves in the pipeline, the compressed spring 205 is used to push the sliding tube 204 to move toward one end of the sleeve 101, and then drive each rotating arm 3 206 to expand through the rotating arm 203, and finally make each wheel frame 2 carrying the roller 201 close to the inner wall of the pipeline. The setting of this structure can make the traveling tube 1 pass through pipelines of different diameters. Then, the spray liquid tube 3 is used to provide paint. The traveling tube 1 will rotate when the traveling tube 1 passes through, and the paint will eventually be evenly sprayed onto the inner wall of the pipeline through the bent nozzle 103. The above process is an existing structure and will not be elaborated here. In addition, the rotatable bent nozzle 103 is used to adjust according to the driving mode of the rotation of the nozzle 102, and different driving modes are referred to below.

[0029] See attached Figure 1-Figure 2 The outer walls at both ends of the rotating arm three 206 are respectively rotatably mounted with a double sprocket tube 207 and a bevel gear 1 209, the axle of the roller 201 close to the rotating arm three 206 is connected to the adjacent double sprocket tube 207 through a sleeve chain 1 208, and the double sprocket tube 207 is connected to the adjacent bevel gear 1 209 through a sleeve chain 2 210.

[0030] See attached Figure 2-Figure 4 The outer wall of the passage tube 1 is provided with a movable driving structure 4 in an annular array manner, which is detachably driven by the rotation of the roller 201 to drive the sleeve 101 to rotate. The movable driving structure 4 includes a bevel gear 3 401 and a rotating shaft 403 rotatably mounted on the outer wall of the passage tube 1. One end of the bevel gear 3 401 is fixedly assembled with a bevel gear 2 402 meshing with the bevel gear 1 209, and one end of the rotating shaft 403 is fixedly assembled with a bevel gear 4 404 meshing with the bevel gear 3 401. The outer wall of one end of the rotating shaft 403 An array of straight wall grooves 405 are provided, one end of the rotating shaft 403 is slidably sleeved with a double-toothed tube 406, and the inner wall of the double-toothed tube 406 is provided with an array of protrusions that are slidably embedded in the straight wall groove 405, the outer walls of the two ends of the double-toothed tube 406 are fixedly sleeved with a bevel gear 5 407 and a bevel gear 6 408 that are respectively used to mesh with the bevel gear 1 104 and the bevel gear 2 105, the outer wall of the middle part of the double-toothed tube 406 is movably sleeved with a wall tube 409, and the outer wall of the wall tube 409 is connected to a connecting rod 410.

[0031] See attached Figure 2-Figure 4The meshing transmission ratio of the bevel gear 104 and the bevel gear 5 407 is greater than the meshing transmission ratio of the bevel gear 2 105 and the bevel gear 6 408. The outer wall of the middle part of the traveling tube 1 is provided with gear holes 106 in an array, and the three gear holes 106 represent the low-speed gear, the neutral gear and the high-speed gear in sequence from one end containing the sleeve 101 to the other end. The outer wall of the middle part of the traveling tube 1 is movably sleeved with a shift tube 411, and the outer wall of the shift tube 411 is rotatably installed with a hook 412 for hooking the inside of the corresponding gear hole 106, and the ends of all connecting rods 410 are fixedly connected to the outer wall of the shift tube 411.

[0032] According to the above structure, before the spraying work starts, the rotation mode and speed of the nozzle 102 are selected according to the spraying requirements, wherein the rotating bending nozzle 103 is rotated so that the bending part is in the same plane with the axis of the traveling tube 1, and then the shift tube 411 is slid to make the hook 412 hook the gear hole 106 corresponding to the low speed gear, at this time the bevel gear five 407 is meshed with the bevel gear one 104, when the device moves in the pipeline, the roller 201 rotates in contact with the pipe wall, and it drives the double sprocket tube 207 to rotate through the chain one 208, and the double sprocket tube 207 drives the bevel gear one 209 to rotate through the chain two 210, and then the bevel gear one 209 and the bevel gear one 204 are meshed. The meshing of the second wheel 402 drives the bevel gear three 401 to rotate, and then the meshing of the bevel gear three 401 and the bevel gear four 404 drives the rotating shaft 403 to rotate, and the rotating shaft 403 then drives the double-tooth tube 406 to rotate, and finally the meshing of the bevel gear five 407 and the bevel gear one 104 drives the sleeve 101 to rotate, and each bent nozzle 103 will rotate when the device moves, so as to complete the spraying work; in addition, the sliding shift tube 411 makes the hook 412 hook the gear hole 106 corresponding to the high-speed gear, at this time the bevel gear six 408 is meshed with the bevel gear two 105, and the sleeve 101 will rotate at a speed higher than the former when the device moves;

[0033] Finally, the bent nozzle 103 is rotated so that the bent portion and the cross section of the nozzle 102 are in the same plane, and the shift tube 411 is slid so that the hook 412 hooks the gear hole 106 corresponding to the neutral gear position. At this time, the bevel gear 5 407 is not engaged with the bevel gear 1 104, and the bevel gear 6 408 is not engaged with the bevel gear 2 105. At this time, the driving force for the rotation of the nozzle 102 comes from the reaction force when the bend nozzle 103 sprays the paint;

[0034] In the above process, the setting of the mobile driving structure 4 enables the nozzle 102 to have three forms of high-speed rotation, low-speed rotation and rotation driven by the reaction force of the spray material, which can make the spraying device suitable for spraying operations in various pipeline paths, whether it is a straight pipe, a curved pipe or a pipe with different diameters, and the setting of the spring 205 can also ensure that each roller 201 is close to the inner wall of the pipe, and the application range is wide. In addition, when the rotation of the nozzle 102 is driven by the roller 201, the power of its rotation spraying does not need to be controlled by a power device, and when the rotation of the nozzle 102 is driven by the reaction force of the spray material, the power of its rotation spraying also does not need to be controlled by a power device, and no power equipment is required to drive it, and effective spraying operations can be completed.

[0035] The working principle of the utility model is as follows: when the spraying device moves in the pipeline, the spring 205 in the compressed state is used to push the slide tube 204 to move toward one end of the sleeve 101, and then the third rotating arm 206 is driven to expand through the second rotating arm 203, and finally the rollers 201 carried by each wheel frame 2 are closely attached to the inner wall of the pipeline. The arrangement of this structure can make the traveling tube 1 pass through pipelines of different diameters, and then the spraying liquid tube 3 is used to provide the coating, and the nozzle 102 of the traveling tube 1 will rotate when passing through, and the coating will eventually be evenly sprayed onto the inner wall of the pipeline through the bent nozzle 103;

[0036] Before the spraying work begins, the rotation mode and speed of the nozzle 102 are selected according to the spraying requirements. The rotating bending nozzle 103 is rotated to make the bending part and the axis of the traveling tube 1 in the same plane. Then the shift tube 411 is slid to make the hook 412 hook the gear hole 106 corresponding to the low speed gear. At this time, the bevel gear 5 407 is meshed with the bevel gear 1 104. When the device moves in the pipeline, the roller 201 rotates in contact with the pipe wall, and it drives the double sprocket tube 207 to rotate through the chain 1 208, and the double sprocket tube 207 drives the bevel gear 1 209 to rotate through the chain 2 210, and then the bevel gear 1 209 and the bevel gear 2 404 are meshed. 02 meshes and drives the bevel gear three 401 to rotate, and then the meshing of the bevel gear three 401 and the bevel gear four 404 drives the rotating shaft 403 to rotate, and the rotating shaft 403 then drives the double-tooth tube 406 to rotate, and finally the meshing of the bevel gear five 407 and the bevel gear one 104 drives the sleeve 101 to rotate, and each bent nozzle 103 will rotate when the device moves, so as to complete the spraying work; in addition, the sliding shift tube 411 makes the hook 412 hook the gear hole 106 corresponding to the high-speed gear, at this time the bevel gear six 408 is meshed with the bevel gear two 105, and the sleeve 101 will rotate at a speed higher than the former when the device moves;

[0037] Finally, the bent nozzle 103 is rotated so that its bent portion is in the same plane as the cross section of the nozzle 102, and the sliding shift tube 411 makes the hook 412 hook the gear hole 106 corresponding to the neutral gear position. At this time, the bevel gear five 407 is not engaged with the bevel gear one 104, and the bevel gear six 408 is not engaged with the bevel gear two 105. At this time, the driving force for the rotation of the nozzle 102 comes from the reaction force when the bent nozzle 103 sprays paint.

[0038] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A plastic pipe inner wall spraying device, comprising a running pipe (1), characterized in that: One end of the travel tube (1) is rotatably assembled with a sleeve (101), the outer portion of the travel tube (1) is foldably assembled with a wheel frame (2) in an annular array, both ends of the wheel frame (2) are rotatably assembled with rollers (201), and the outer wall of the travel tube (1) is provided with an annular array of movable driving structures (4) that can detachably drive the sleeve (101) to rotate by means of the rollers (201); The outer wall of one end of the sleeve (101) is respectively fixedly sleeved with a bevel gear 1 (104) and a bevel gear 2 (105), and the bevel gear 1 (104) is arranged on the inner side of the bevel gear 2 (105); The two ends of the middle part of the wheel frame (2) are rotatably connected with a rotating arm 1 (202) and a rotating arm 3 (206), respectively; the outer walls of the two ends of the rotating arm 3 (206) are rotatably mounted with a double sprocket tube (207) and a bevel gear 1 (209), respectively; the wheel axle of the roller (201) close to the rotating arm 3 (206) is connected to the adjacent double sprocket tube (207) through a sleeved chain 1 (208), and the double sprocket tube (207) is connected to the adjacent bevel gear 1 (209) through a sleeved chain 2 (210); The mobile driving structure (4) comprises a bevel gear 3 (401) and a rotating shaft (403) rotatably mounted on the outer wall of the travel tube (1); one end of the bevel gear 3 (401) is fixedly assembled with a bevel gear 2 (402) meshing with a bevel gear 1 (209); one end of the rotating shaft (403) is fixedly assembled with a bevel gear 4 (404) meshing with the bevel gear 3 (401); an outer wall of one end of the rotating shaft (403) is provided with a wall straight groove (405) in an array; The end sliding sleeve is provided with a double tooth tube (406), and the inner wall of the double tooth tube (406) is provided with an array of protrusions that are slidably embedded in the wall straight groove (405), the outer wall fixed sleeves at both ends of the double tooth tube (406) are provided with a bevel gear five (407) and a bevel gear six (408) respectively for meshing with the bevel gear one (104) and the bevel gear two (105), the outer wall movable sleeve in the middle of the double tooth tube (406) is provided with a wall tube (409), and the outer wall of the wall tube (409) is connected to a connecting rod (410).

2. A plastic pipe inner wall spraying device according to claim 1, characterized in that: The meshing transmission ratio between the bevel gear 1 (104) and the bevel gear 5 (407) is greater than the meshing transmission ratio between the bevel gear 2 (105) and the bevel gear 6 (408).

3. A plastic pipe inner wall spraying device according to claim 1, characterized in that: The outer wall of the middle part of the travel tube (1) is provided with gear holes (106) in an array, and the three gear holes (106) represent a low-speed gear, a neutral gear and a high-speed gear in sequence from one end containing the sleeve (101) to the other end.

4. A plastic pipe inner wall spraying device according to claim 3, characterized in that: A shift tube (411) is movably sleeved on the outer wall of the middle portion of the travel tube (1), and a hook (412) for hooking the inside of a corresponding gear position hole (106) is rotatably mounted on the outer wall of the shift tube (411), and the ends of all the connecting rods (410) are fixedly connected to the outer wall of the shift tube (411).

5. A plastic pipe inner wall spraying device according to claim 1, characterized in that: The other end of the sleeve (101) is fixedly connected to a nozzle (102), and the outer wall of the nozzle (102) is rotatably connected to a bent nozzle (103) in an annular array.

6. A plastic pipe inner wall spraying device according to claim 5, characterized in that: A spray liquid pipe (3) for providing paint is connected through the interior of the running pipe (1), and one end of the spray liquid pipe (3) is connected to the spray head (102) in a sealing and rotatable manner.

7. A plastic pipe inner wall spraying device according to claim 1, characterized in that: A sliding tube (204) is provided on the sliding sleeve of one end of the travel tube (1) away from the sleeve (101), and a spring (205) is provided between one end of the sliding tube (204) and one end of the travel tube (1), and the sliding tube (204) is connected to the first rotating arm (202) via the second rotating arm (203).

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