Casing surface spraying device

Abstract

The present invention relates to the technical field of spraying devices, and specifically discloses a sleeve surface spraying device, comprising a traction frame, wherein both front and rear ends of the outer side of the traction frame are fixedly connected with bent frames, the ends of the two bent frames away from the traction frame are commonly fixedly connected with a fixed ring, the outer wall of the traction frame is slidably connected with a movable ring, the interior of the traction frame is rotatably connected with a connecting pipe, and the right part of the connecting pipe is provided with a spraying assembly, the spraying assembly comprises a small rod fixedly plugged into the right outer wall of the connecting pipe, the top of the outer wall of the small rod is slidably connected with a nozzle, and the end of the nozzle away from the small rod is fixedly plugged with a nozzle, and the spraying assembly also comprises a control frame fixedly connected to the outer wall of the connecting pipe and located on the left side of the small rod, and a plurality of pistons are arranged inside the control frame, and the spraying distance can be automatically adjusted through the cooperation of the above structure, so as to avoid affecting the uniformity of spraying due to inappropriate spraying distance, thereby avoiding affecting the quality of spraying.

Description

Technical Field

[0001] The invention relates to the technical field of spraying devices, in particular to a sleeve surface spraying device. Background Art

[0002] Spraying anti-corrosion materials on the surface of the casing is a common method to enhance the performance of the pipe, so as to improve its corrosion resistance, wear resistance, insulation and other properties. The surface of the casing includes the outer wall surface and the inner wall surface. The spraying of the outer wall surface is relatively easy, while the spraying of the inner wall surface of the casing requires the use of a special spraying device.

[0003] The existing pipe inner wall spraying device is usually provided with a supporting wheel. When in use, the supporting wheel is close to the inner wall of the pipe. During spraying, under the action of the supporting wheel, the pipe inner wall spraying device can be moved inside the pipe, so as to spray different positions.

[0004] The existing sleeves have different size specifications. Usually, the position of the supporting wheel part of the existing pipe inner wall spraying device can be adjusted so that it can be used for sleeves of different diameters. When spraying sleeves of different diameters, the spraying distance is one of the factors affecting the spraying uniformity. A distance that is too close may cause excessive accumulation of paint and reduce the utilization rate. A spraying distance that is too far may easily lead to poor spraying effect. An appropriate spraying distance helps to improve the overall utilization rate of the paint. At an appropriate spraying distance, the uniformity of the coating can be optimized by adjusting the spraying rate to achieve high spraying efficiency. However, in the prior art, the position of the nozzle cannot be automatically adjusted, resulting in the inability to automatically adjust the spraying distance only for sleeves of different diameters, which in turn affects the uniformity of the spraying and thus affects the quality of the spraying. Summary of the invention

[0005] The purpose of the present invention is to provide a sleeve surface spraying device that can automatically adjust the spraying distance, so as to avoid affecting the uniformity of the spraying due to an inappropriate spraying distance, thereby avoiding affecting the quality of the spraying, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sleeve surface spraying device, comprising a traction frame, both front and rear ends of the outer side of the traction frame are fixedly connected with a bent frame, the ends of the two bent frames away from the traction frame are commonly fixedly connected with a fixed ring, the outer wall of the traction frame is slidably connected with a moving ring, the inner part of the traction frame is rotatably connected with a connecting pipe, the right part of the connecting pipe is provided with a spraying assembly, the spraying assembly comprises a small rod fixedly plugged into the right outer wall of the connecting pipe, the top of the outer wall of the small rod is slidably connected with a nozzle, and the end of the nozzle away from the small rod is fixedly plugged with a nozzle, the spraying assembly also comprises a control frame fixedly connected to the outer wall of the connecting pipe and located on the left side of the small rod, a plurality of pistons are arranged inside the control frame, a lifting rod part is arranged on the side of the piston away from the connecting pipe, a small plate is arranged on the outer wall of the lifting rod part, the right part of the small plate is fixedly connected to the nozzle, a liquid injection assembly is arranged on the left side of the control frame, and a first spring is fixedly connected to the side of the piston away from the connecting pipe, and the first spring The end of the spring away from the piston is fixedly connected with a baffle, and the ring side of the baffle is fixedly connected to the control frame. The injection assembly includes a bellows bag fixedly connected to the left side of the control frame, and the left side of the bellows bag is fixedly connected with a moving plate. The inner side of the moving plate is slidably connected to the outer wall of the connecting pipe. The left side of the moving plate is fixedly connected to the connecting frame, and the left side of the connecting frame is rotatably connected with a ball. The left side of the ball fits the moving ring. The right side of the bellows bag is fixedly plugged with a through pipe, and the right side of the through pipe is inserted into the inside of the control frame. A moving assembly is arranged near the fixed ring on the outside of the traction frame. The moving assembly includes a support rod rotatably connected to the ring side of the moving ring, and the side of the support rod away from the moving ring is rotatably connected with a support rod, and the side of the support rod away from the support rod is rotatably connected with a roller through the fixed ring. The lifting rod part includes a straight rod fixedly connected to the side of the piston away from the connecting pipe, and the end of the straight rod away from the piston is threadedly connected with an adjusting rod, and the outer wall of the adjusting rod is rotatably connected to the small plate.

[0007] Preferably, a mounting groove is provided on the left side portion of the traction frame, a motor is fixedly connected to the inside of the mounting groove, the output shaft of the motor and the outer wall of the connecting tube are fixedly connected to a first gear, the two first gears are meshed with each other, the outer wall of the connecting tube is located on the left side of the moving ring and an electric telescopic rod is fixedly connected, and the output shaft of the electric telescopic rod is fixedly connected to the moving ring.

[0008] Preferably, a multi-channel rotary joint is installed on the left side of the connecting pipe, a partition frame is fixedly connected to the inside of the connecting pipe, a cleaning assembly is arranged on the outside of the connecting pipe on the left side of the corrugated bag, the cleaning assembly includes a frame fixedly connected to the outer wall of the connecting pipe, a ventilation pipe is fixedly inserted into the ring side of the frame, an intake pipe is slidably connected to the side of the ventilation pipe away from the frame, an intake hood is fixedly inserted into the side of the intake pipe away from the ventilation pipe, a rotating cylinder is rotatably connected to the inside of the intake hood, a long plate is fixedly connected between the outer wall of the intake pipe and the straight rod, and a ventilation groove is provided on the outer wall of the connecting pipe and inside the frame.

[0009] Preferably, a retaining ring is fixedly connected inside the ventilation pipe, a gravity ball is arranged inside the retaining ring, and a retaining frame is fixedly connected inside the ventilation pipe and on a side of the retaining ring away from the frame.

[0010] Preferably, a groove is provided on the left side of the air suction hood, the left side of the rotating cylinder extends into the groove and is fixedly connected to a second gear, a sliding frame is slidably connected to the bottom left side of the air suction hood, a second spring is fixedly connected between the sliding frame and the air suction hood, a rack is fixedly connected to the top of the sliding frame, a circular ring is fixedly connected to the right side of the fixing ring, and a plurality of limit blocks are fixedly connected to the outer wall of the circular ring.

[0011] Preferably, the limiting block is tiltedly arranged at a side away from the ring, and the sliding frame is rotatably connected to a roller at a side close to the ring.

[0012] Preferably, a cleaning plate is fixedly connected inside the suction hood and below the rotating cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Through the cooperation of the spraying assembly and the injection assembly, when the position of the roller is adjusted for spraying sleeves of different diameters, the movement of the nozzle is the same as the distance the roller moves, thereby realizing automatic adjustment of the spraying distance. This can avoid affecting the uniformity of the spraying due to inappropriate spraying distance, thereby avoiding affecting the quality of the spraying.

[0015] 2. Through the action of the lifting rod, the position of the nozzle is adjusted according to different spraying materials to ensure the most appropriate spraying distance during spraying, further improve the uniformity of spraying, and then improve the quality of spraying.

[0016] 3. Under the action of the cleaning component, the rotating drum rotates to clean the inner wall of the sleeve, so as to prevent the inner wall of the sleeve from containing too many impurities and affecting the uniformity of spraying, thereby further improving the quality of spraying.

[0017] 4. Through the cooperation of the retaining ring, the gravity ball and the retaining frame, the cleaning component at the top can inhale less air during air inhalation, which can make the cleaning component at the bottom inhale more air, ensuring that the suction hood at the bottom can absorb the scraped impurities, thereby ensuring that there is no impurity on the inner wall of the sleeve after cleaning, further improving the uniformity of spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is the overall structural view of the present invention;

[0020] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0021] Figure 3 It is a schematic diagram of the local structure of the long board of the present invention;

[0022] Figure 4 It is a schematic diagram of a half-section structure of the air intake pipe of the present invention;

[0023] Figure 5 It is a schematic diagram of a half-section structure of a small rod of the present invention;

[0024] Figure 6 It is a schematic diagram of a half-section structure of the retaining ring of the present invention;

[0025] Figure 7 It is a schematic diagram of the half-section structure of the suction hood of the present invention.

[0026] Description of reference numerals:

[0027] 1. Traction frame; 2. Bending frame; 3. Fixed ring; 4. Moving ring; 5. Connecting pipe; 6. Spraying assembly; 61. Small rod; 62. Spray pipe; 63. Spray head; 64. Control frame; 65. Piston; 66. Lifting rod; 661. Straight rod; 662. Adjusting rod; 67. Small plate; 68. First spring; 69. Baffle; 7. Liquid injection assembly; 71. Bellows; 72. Moving plate; 73. Connecting frame; 74. Ball; 75. Through pipe; 8. Moving assembly; 81. Support rod; 82. Support rod; 83. Roller Wheel; 9, cleaning assembly; 91, frame; 92, ventilation pipe; 93, suction pipe; 94, suction hood; 95, rotating cylinder; 96, retaining ring; 97, gravity ball; 98, retaining frame; 99, second gear; 910, sliding frame; 911, second spring; 912, rack; 913, cleaning plate; 10, electric telescopic rod; 11, multi-channel rotary joint; 12, partition frame; 13, long board; 14, ring; 15, limit block; 16, roller; 17, motor; 18, first gear; 19, ball. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figures 1 to 3 and Figure 5The present invention provides a technical solution: a casing surface spraying device, comprising a traction frame 1, wherein both front and rear ends of the outer side of the traction frame 1 are fixedly connected with a bent frame 2, and one end of the two bent frames 2 away from the traction frame 1 is fixedly connected with a fixed ring 3, and the bent frame 2 is used to connect and fix the fixed ring 3 with the traction frame 1, and the outer wall of the traction frame 1 is slidably connected with a moving ring 4, and the inner part of the traction frame 1 is rotatably connected with a connecting pipe 5, and the right part of the connecting pipe 5 is provided with a spraying assembly 6, and the spraying assembly 6 includes a small rod 61 fixedly plugged into the outer wall of the right side of the connecting pipe 5, and the top of the outer wall of the small rod 61 is slidably connected with a nozzle 62, and the end of the nozzle 62 away from the small rod 61 is fixedly plugged with a nozzle 63, and the spraying assembly 6 also includes a small rod 61 fixedly connected to the outer wall of the connecting pipe 5 A control frame 64 is disposed on the wall and on the left side of the small rod 61, and a plurality of pistons 65 are arranged inside the control frame 64. The outer side of the piston 65 is fitted with the inner wall of a small groove provided inside the control frame 64. A lifting rod portion 66 is arranged on the side of the piston 65 away from the connecting pipe 5. A small plate 67 is arranged on the outer wall of the lifting rod portion 66. The right part of the small plate 67 is fixedly connected to the nozzle 62. A liquid injection assembly 7 is arranged on the left side of the control frame 64. A first spring 68 is fixedly connected to the side of the piston 65 away from the connecting pipe 5. The lifting rod portion 66 passes through the first spring 68. A baffle 69 is fixedly connected to the end of the first spring 68 away from the piston 65. The baffle 69 serves to limit the first spring 68, and the ring side of the baffle 69 is fixedly connected to the control frame 64.

[0030] The injection assembly 7 includes a bellows 71 fixedly connected to the left side of the control frame 64, a movable plate 72 is fixedly connected to the left side of the bellows 71, the inner side of the movable plate 72 is slidably connected to the outer wall of the connecting tube 5, a connecting frame 73 is fixedly connected to the left side of the movable plate 72, a ball 74 is rotatably connected to the left side of the connecting frame 73, the left side of the ball 74 is fitted with the movable ring 4, a through pipe 75 is fixedly inserted on the right side of the bellows 71, and the right side of the through pipe 75 is inserted into the interior of the control frame 64, and a movable assembly 8 is provided on the outer side of the traction frame 1 near the fixed ring 3, and the movable assembly 8 includes a rotating A support rod 81 is connected to the side of the mobile ring 4, and the side of the support rod 81 away from the mobile ring 4 is rotatably connected to a support rod 82, and the side of the support rod 82 away from the support rod 81 passes through the fixed ring 3 and is rotatably connected to a roller 83. The left part of the traction frame 1 is provided with a mounting groove, and the inside of the mounting groove is fixedly connected to a motor 17, and the output shaft of the motor 17 and the outer wall of the connecting pipe 5 are fixedly connected to a first gear 18, and the two first gears 18 are meshed with each other. The outer wall of the connecting pipe 5 is located on the left side of the mobile ring 4 and is fixedly connected to an electric telescopic rod 10, and the output shaft of the electric telescopic rod 10 is fixedly connected to the mobile ring 4.

[0031] By adopting the above technical solution, when the device is used, the sleeve to be sprayed is fixed by an external device for fixing the sleeve, the traction frame 1 and the fixing ring 3 are placed inside the sleeve and are located on the right side of the sleeve, and then the output shaft of the electric telescopic rod 10 is extended to make the movable ring 4 move to the right. As the movable ring 4 moves to the right, the angle of the support rod 81 changes, and the support rod 81 squeezes the support rod 82, so that the support rod 82 moves with the roller 83 toward the inner wall of the sleeve until the outer wall of the roller 83 fits with the inner wall of the sleeve. The traction frame 1 can be towed by an external traction device for towing the traction frame 1, so that the device can continue to move to the left. While the device moves, By injecting the spraying liquid into the interior of the connecting tube 5, and then inputting the spraying liquid for spraying into the interior of the small rod 61, and then the spraying liquid enters the interior of the nozzle 62, and finally the spraying liquid is discharged from the nozzle 63 and sprayed onto the inner wall of the sleeve, thereby spraying the inner wall surface of the sleeve. When spraying, the output shaft of the motor 17 is rotated, so that the first gear 18 connected to the output shaft of the motor 17 rotates with the first gear 18 connected to the connecting tube 5. Under such action, the connecting tube 5 can rotate with part of the spraying assembly 6, so as to facilitate uniform spraying of the inner wall of the sleeve. The fixing ring 3 is rotatably connected to the support rod 82 with a round ball 19, and the round ball 19 is away from the fixing ring 3 and fits the support rod 82, which is beneficial to reduce the friction between the support rod 82 and the fixing ring 3.

[0032] As the output shaft of the electric telescopic rod 10 extends, the moving ring 4 moves to the right, so that the moving ring 4 squeezes the connecting frame 73, so that the moving plate 72 moves to the left, so that the bellows 71 can be compressed, and then the medium liquid inside the bellows 71 is pressed into the control frame 64 through the through pipe 75. Under the pressure of the medium liquid inside the control frame 64, the piston 65 moves upward with the lifting rod 66. When the lifting rod 66 moves upward, the small plate 67 moves upward accordingly, so that the nozzle 62 moves upward, thereby realizing automatic adjustment of the position of the nozzle 63, thereby adjusting the spraying distance. It should be noted that, during the design, the distance between the nozzle 63 and the connecting pipe 5 is greater than the distance between the connecting pipe 5 and the roller 83, and the distance difference between the two is about 20 cm. During the design, by controlling the capacity inside the bellows 71, when the movable ring 4 moves to the right, the moving distance of the support rod 82 and the piston 65 remain consistent, so that when the position of the roller 83 is adjusted for spraying sleeves of different diameters, the movement amount of the nozzle 63 is the same as the distance moved by the roller 83, thereby realizing automatic adjustment of the spraying distance, which can avoid affecting the uniformity of the spraying due to inappropriate spraying distance, and thus avoid affecting the quality of the spraying.

[0033] When the output shaft of the electric telescopic rod 10 contracts to move the movable ring 4 to the left, the liquid medium returns to the inside of the bellows 71 under the elastic force of the first spring 68, so that part of the connecting frame 73 moves to the left, so that the ball 74 remains in contact with the movable ring 4.

[0034] Specifically, Figures 1 to 3 and Figure 5 As shown, the lifting rod portion 66 includes a straight rod 661 fixedly connected to the side of the piston 65 away from the connecting pipe 5, the end of the straight rod 661 away from the piston 65 is provided with a thread, and the end of the straight rod 661 away from the piston 65 is threadedly connected to an adjusting rod 662, the outer wall of the adjusting rod 662 is rotatably connected to the small plate 67, and the top of the adjusting rod 662 is fixedly connected to a hexagonal block.

[0035] By adopting the above technical solution, the optimal spraying distances of different spraying materials are different. When changing different spraying materials for spraying, the hexagonal block and the adjusting rod 662 are rotated by external wrenches and other tools in the spraying preparation stage. Under the action of the threaded connection, the adjusting rod 662 moves, and the small plate 67 and the nozzle 62 move, so that the position of the nozzle 63 is adjusted according to different spraying materials, thereby ensuring that the most appropriate spraying distance is used during spraying, further improving the uniformity of spraying, and then improving the quality of spraying.

[0036] Specifically, Figures 1 to 4 and Figure 7 As shown, a multi-channel rotary joint 11 is installed on the left side of the connecting pipe 5, a partition frame 12 is fixedly connected to the inside of the connecting pipe 5, a cleaning assembly 9 is arranged on the outside of the connecting pipe 5 on the left side of the corrugated bag 71, and the cleaning assembly 9 includes a frame 91 fixedly connected to the outer wall of the connecting pipe 5, a ventilation pipe 92 is fixedly inserted on the ring side of the frame 91, a suction pipe 93 is slidably connected to the side of the ventilation pipe 92 away from the frame 91, a suction hood 94 is fixedly inserted to the side of the suction pipe 93 away from the ventilation pipe 92, a rotating cylinder 95 is rotatably connected to the inside of the suction hood 94, a long plate 13 is fixedly connected between the outer wall of the suction pipe 93 and the straight rod 661, and a ventilation groove is provided on the outer wall of the connecting pipe 5 and inside the frame 91.

[0037] By adopting the above technical scheme, the multi-channel rotary joint 11 is a mature existing technology, and its installation method and principle are not described in detail. Under the action of the partition frame 12, the interior of the connecting pipe 5 can be divided into two spaces, and the multi-channel rotary joint 11 is provided with two channels, one of which is used to pass the spray liquid into one of the spaces, and the outer side of the other channel is connected to the external dust collection equipment and the channel is passed into the other space. In the initial state, the roller 83 and the suction hood 94 are at the same distance away from the end of the connecting pipe 5 and the connecting pipe 5, and as the piston 65 moves with the straight rod 661, the suction pipe 93 moves under the action of the long plate 13, thereby ensuring that the distance between the roller 83 and the suction hood 94 and the end of the connecting pipe 5 is always the same. A plurality of soft bristles are fixedly connected to the outer side of the rotating cylinder 95. As the connecting pipe 5 rotates, the rotating cylinder 95 can rotate to clean the inner wall of the sleeve to avoid the inner wall of the sleeve containing more impurities and affecting the uniformity of spraying, thereby further improving the quality of spraying.

[0038] As the external dust collection equipment is started, negative pressure is generated in the space of the connecting pipe 5 used for dust collection, so that the scraped impurities enter the suction pipe 93, the ventilation pipe 92 and the frame 91 from the suction hood 94, and enter the space of the connecting pipe 5 used for dust collection from the ventilation groove, and are finally sucked into the external dust collection equipment, ensuring that there are no impurities on the inner wall of the sleeve after cleaning, and further avoiding the inner wall of the sleeve containing impurities and affecting the uniformity of spraying.

[0039] Specifically, Figures 1 to 4 and Figure 6 to Figure 7 As shown, a retaining ring 96 is fixedly connected inside the vent pipe 92 , a gravity ball 97 is arranged inside the retaining ring 96 , and a retaining frame 98 is fixedly connected inside the vent pipe 92 and on the side of the retaining ring 96 away from the frame 91 .

[0040] By adopting the above technical solution, it should be noted that the gravity of the gravity ball 97 is relatively large, and the inner side of the retaining ring 96 gradually narrows from the end close to the air suction hood 94 to the end away from the air suction hood 94. There are multiple cleaning components 9. Under the gravity of the gravity ball 97, the gravity ball 97 inside the cleaning component 9 at the top moves to the narrower area of ​​the retaining ring 96, and the gravity ball 97 inside the cleaning component 9 at the bottom moves out of the retaining ring 96, so that when inhaling, the cleaning component 9 at the top has a smaller air intake volume, which can make the cleaning component 9 at the bottom have a larger air intake volume, ensuring that the air suction hood 94 at the bottom can absorb the scraped impurities, thereby ensuring that there is no impurity on the inner wall of the sleeve after cleaning, further improving the uniformity of spraying.

[0041] Specifically, Figures 1 to 4 and Figure 6 to Figure 7As shown, a groove is provided on the left side of the air suction hood 94, and the left side of the rotating cylinder 95 extends into the groove and is fixedly connected to a second gear 99, a sliding frame 910 is slidably connected to the bottom left side of the air suction hood 94, a second spring 911 is fixedly connected between the sliding frame 910 and the air suction hood 94, a rack 912 is fixedly connected to the top of the sliding frame 910, and the rack 912 is engaged with the second gear 99, a circular ring 14 is fixedly connected to the right side of the fixing ring 3, a plurality of limit blocks 15 are fixedly connected to the outer wall of the circular ring 14, the limit blocks 15 are tilted away from the side of the circular ring 14, and a roller 16 is rotatably connected to the side of the sliding frame 910 close to the circular ring 14.

[0042] By adopting the above technical solution, as the connecting pipe 5 rotates with the cleaning assembly 9, the suction hood 94 rotates with the sliding frame 910, and the sliding frame 910 rotates around the ring 14. When the sliding frame 910 rotates to the part close to the limit block 15, the sliding frame 910 is limited by the limit block 15 and moves in the direction away from the limit block 15, so that the rack 912 rotates, thereby rotating the second gear 99, so that part of the rotating cylinder 95 can be rotated, so that the soft brush part on the rotating cylinder 95 can be rotated, which can further improve the cleaning effect on the inner wall of the sleeve, thereby further improving the uniformity of spraying.

[0043] It should be noted that when the sliding frame 910 rotates to leave the limit block 15, under the elastic force of the second spring 911, the sliding frame 910 is reset, so that the rack 912 moves, thereby rotating the soft bristle part on the rotating cylinder 95, so that the elastic force of the second spring 911 is sufficient to reset the sliding frame 910. The design of the roller 16 is conducive to reducing the friction when the sliding frame 910 moves.

[0044] Specifically, Figures 1 to 4 and Figure 7 As shown, a cleaning plate 913 is fixedly connected inside the suction hood 94 and below the rotating cylinder 95 .

[0045] By adopting the above technical solution, the cleaning plate 913 contacts the soft bristles near the cleaning plate 913. As the rotating cylinder 95 rotates, part of the soft bristles collide with the cleaning plate 913, thereby cleaning the soft bristles and preventing the soft bristles from being stuck with a lot of impurities and affecting the cleaning effect.

[0046] Working principle: The traction frame 1 and the fixing ring 3 are placed inside the sleeve and are located on the right side of the sleeve, and then the output shaft of the electric telescopic rod 10 is extended until the outer wall of the roller 83 fits the inner wall of the sleeve, and the traction frame 1 can be towed by an external traction device to tow the traction frame 1, so that the device can continue to move to the left direction. While the device is moving, the spraying liquid is injected into the interior of the connecting pipe 5, and then the spraying liquid for spraying is input into the interior of the small rod 61, and then the spraying liquid enters the interior of the nozzle 62, and finally the spraying liquid is discharged from the nozzle 63 and sprayed onto the inner wall of the sleeve, so as to realize spraying on the inner wall surface of the sleeve. During spraying, the output shaft of the motor 17 rotates, and the connecting pipe 5 rotates with part of the spraying assembly 6, so as to facilitate uniform spraying of the inner wall of the sleeve.

[0047] During the design, the distance between the nozzle 63 and the connecting pipe 5 is greater than the distance between the connecting pipe 5 and the roller 83, and the distance difference between the two is about 20 cm. During the design, by controlling the capacity inside the corrugated bag 71, when the movable ring 4 moves to the right, the moving distance of the support rod 82 and the piston 65 remain consistent, so that when the position of the roller 83 is adjusted for spraying sleeves of different diameters, the movement amount of the nozzle 63 is the same as the distance moved by the roller 83, thereby realizing automatic adjustment of the spraying distance, which can avoid affecting the uniformity of the spraying due to inappropriate spraying distance, and thus avoid affecting the quality of the spraying.

[0048] In the initial state, the roller 83 and the suction hood 94 are at the same distance from the end of the connecting pipe 5 away from the connecting pipe 5, and as the piston 65 moves with the straight rod 661, the suction pipe 93 moves under the action of the long plate 13, thereby ensuring that the roller 83 and the suction hood 94 are always at the same distance from the end of the connecting pipe 5 away from the connecting pipe 5. A plurality of soft bristles are fixedly connected to the outer side of the rotating cylinder 95. As the connecting pipe 5 rotates, the rotating cylinder 95 can rotate to clean the inner wall of the sleeve to prevent the inner wall of the sleeve from containing more impurities and affecting the uniformity of spraying. The external dust collection device is started, so that a negative pressure is generated in the space of the connecting pipe 5 used for dust collection. Pressure is applied to suck the impurities into the external dust suction equipment to ensure that there is no impurity on the inner wall of the sleeve after cleaning, and further avoid the inner wall of the sleeve containing impurities and affecting the uniformity of spraying. Under the gravity of the gravity ball 97, the gravity ball 97 inside the cleaning component 9 at the top moves to the narrower area of ​​the retaining ring 96, and the gravity ball 97 inside the cleaning component 9 at the bottom moves out of the retaining ring 96, so that when inhaling, the cleaning component 9 at the top has a smaller air intake, which can make the cleaning component 9 at the bottom have a larger air intake, ensuring that the bottom suction hood 94 can absorb the scraped impurities, thereby ensuring that there is no impurity on the inner wall of the sleeve after cleaning, and further improving the uniformity of spraying.

[0049] When the sliding frame 910 rotates to the part close to the limit block 15, the sliding frame 910 is limited by the limit block 15 and moves in the direction away from the limit block 15, so that the rack 912 rotates, thereby causing the second gear 99 to rotate, which can cause part of the rotating cylinder 95 to rotate, thereby causing the soft brush part on the rotating cylinder 95 to rotate, which can further improve the cleaning effect on the inner wall of the sleeve, thereby further improving the uniformity of the spraying.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A casing surface spraying device, comprising a traction frame (1), characterized in that: The front and rear ends of the outer side of the traction frame (1) are both fixedly connected to a bent frame (2), the ends of the two bent frames (2) away from the traction frame (1) are commonly fixedly connected to a fixed ring (3), the outer wall of the traction frame (1) is slidably connected to a movable ring (4), the interior of the traction frame (1) is rotatably connected to a connecting pipe (5), and the right side of the connecting pipe (5) is provided with a spray assembly (6); The spraying assembly (6) comprises a small rod (61) fixedly plugged into the right outer wall of the connecting tube (5), a nozzle (62) being slidably connected to the top of the outer wall of the small rod (61), a nozzle (63) being fixedly plugged into the end of the nozzle (62) away from the small rod (61), the spraying assembly (6) further comprises a control frame (64) fixedly connected to the outer wall of the connecting tube (5) and located on the left side of the small rod (61), a plurality of pistons (65) being arranged inside the control frame (64), a lifting rod portion (66) being arranged on the side of the piston (65) away from the connecting tube (5), a small plate (67) being arranged on the outer wall of the lifting rod portion (66), a right side portion of the small plate (67) being fixedly connected to the nozzle (62), and a liquid injection assembly (7) being arranged on the left side of the control frame (64); A first spring (68) is fixedly connected to a side of the piston (65) away from the connecting tube (5); a baffle (69) is fixedly connected to an end of the first spring (68) away from the piston (65); a ring side of the baffle (69) is fixedly connected to the control frame (64); the injection assembly (7) comprises a bellows (71) fixedly connected to the left side of the control frame (64); a moving plate (72) is fixedly connected to the left side of the bellows (71); the inner side of the moving plate (72) is slidably connected to the outer wall of the connecting tube (5); a connecting frame (73) is fixedly connected to the left side of the moving plate (72); a ball (74) is rotatably connected to the left side of the connecting frame (73); the left side of the ball (74) is in contact with the moving ring (4); a through pipe (75) is fixedly inserted to the right side of the bellows (71); the right side of the through pipe (75) is inserted into the interior of the control frame (64); A moving assembly (8) is provided on the outer side of the traction frame (1) near the fixed ring (3), the moving assembly (8) comprising a support rod (81) rotatably connected to a ring side of the moving ring (4), a side of the support rod (81) away from the moving ring (4) being rotatably connected to a support rod (82), and a side of the support rod (82) away from the support rod (81) passing through the fixed ring (3) and being rotatably connected to a roller (83); The lifting rod portion (66) comprises a straight rod (661) fixedly connected to a side of the piston (65) away from the connecting pipe (5); the end of the straight rod (661) away from the piston (65) is provided with a thread; the end of the straight rod (661) away from the piston (65) is threadedly connected to an adjusting rod (662); the outer wall of the adjusting rod (662) is rotatably connected to the small plate (67).

2. A casing surface spraying device according to claim 1, characterized in that: The left side of the traction frame (1) is provided with a mounting groove, the interior of the mounting groove is fixedly connected to a motor (17), the output shaft of the motor (17) and the outer wall of the connecting tube (5) are both fixedly connected to a first gear (18), the two first gears (18) are meshed with each other, the outer wall of the connecting tube (5) is located on the left side of the moving ring (4) and is fixedly connected to an electric telescopic rod (10), the output shaft of the electric telescopic rod (10) is fixedly connected to the moving ring (4).

3. A casing surface spraying device according to claim 1, characterized in that: A multi-channel rotary joint (11) is installed on the left side of the connecting pipe (5); a partition frame (12) is fixedly connected to the inside of the connecting pipe (5); a cleaning assembly (9) is arranged on the outside of the connecting pipe (5) on the left side of the corrugated bag (71); the cleaning assembly (9) comprises a frame (91) fixedly connected to the outer wall of the connecting pipe (5); a ventilation pipe (92) is fixedly plugged into the ring side of the frame (91); a suction pipe (93) is slidably connected to the side of the ventilation pipe (92) away from the frame (91); a suction hood (94) is fixedly plugged into the side of the suction pipe (93) away from the ventilation pipe (92); a rotating cylinder (95) is rotatably connected to the inside of the suction hood (94); a long plate (13) is fixedly connected between the outer wall of the suction pipe (93) and the straight rod (661); and a ventilation groove is provided on the outer wall of the connecting pipe (5) and inside the frame (91).

4. A casing surface spraying device according to claim 3, characterized in that: A retaining ring (96) is fixedly connected inside the vent pipe (92), a gravity ball (97) is arranged inside the retaining ring (96), and a retaining frame (98) is fixedly connected inside the vent pipe (92) and on a side of the retaining ring (96) away from the frame (91).

5. A casing surface spraying device according to claim 4, characterized in that: A groove is provided on the left side of the air suction hood (94), and the left side of the rotating cylinder (95) extends into the groove and is fixedly connected to a second gear (99). A sliding frame (910) is slidably connected to the bottom of the left side of the air suction hood (94), and a second spring (911) is fixedly connected between the sliding frame (910) and the air suction hood (94). A rack (912) is fixedly connected to the top of the sliding frame (910), and a circular ring (14) is fixedly connected to the right side of the fixing ring (3), and a plurality of limit blocks (15) are fixedly connected to the outer wall of the circular ring (14).

6. A casing surface spraying device according to claim 5, characterized in that: The limiting block (15) is arranged obliquely on a side away from the circular ring (14), and the side of the sliding frame (910) close to the circular ring (14) is rotatably connected to a roller (16).

7. A casing surface spraying device according to claim 6, characterized in that: A cleaning plate (913) is fixedly connected inside the suction hood (94) and below the rotating cylinder (95).

Images