Automatic shot blasting equipment for processing inner wall of pipeline
By designing an automatic shot blasting equipment with a support frame and fixed structure, the problem of pipe deformation caused by lack of support and restraint during shot blasting was solved, achieving stable support for the inner wall of the pipe and uniform shot blasting effect, thus improving processing accuracy and coating quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG ZHISHENG SHENGYUAN ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-24
AI Technical Summary
Existing shot blasting equipment lacks support and limiting devices in the processing of pipe inner walls, which leads to pipe deformation, bending or twisting, affecting processing accuracy and coating adhesion.
An automated shot blasting device including a support frame and a fixed structure was designed. The device supports and limits the pipeline through components such as clamping frames, lead screws, threaded rings, and limiting rods, ensuring the stability and uniformity of the shot blasting process.
It achieves stable support and positioning for pipes of different sizes, improves the uniformity of shot blasting effect, and ensures the cleanliness of the pipe inner wall and the adhesion of subsequent coatings.
Smart Images

Figure CN224544267U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shot blasting technology for pipe inner wall processing, and in particular to an automatic shot blasting equipment for pipe inner wall processing. Background Technology
[0002] A pipe shot blasting device is a type of equipment used to clean impurities from the inner wall surface of pipes. By using high-speed propelled steel shot or other media to impact the inner wall of the pipe, it can remove attached dirt and oxide layers, achieving the purpose of surface treatment and cleaning. It is commonly used in pipe manufacturing, pre-coating treatment, or special process requirements.
[0003] Existing technologies, such as the utility model patent with publication number CN218364115U, disclose a shot blasting device for facilitating rust removal from the inner wall of pipes. This patent employs a shot blasting storage box welded to the upper end face of a control trolley; a shot blasting pressurization pump is installed through the end face of the storage box; a main discharge pipe is connected to the discharge port of the pressurization pump; spraying branch pipes are installed at even intervals along the side wall of the main discharge pipe; a connecting screw is horizontally welded to the end face of each spraying branch pipe; and a screw is sleeved on the connecting screw. The device comprises a threaded sleeve; a drive motor is welded to the end face of the threaded sleeve; a drive shaft is horizontally mounted on the transmission end of the drive motor; a rotating rod is welded to the drive shaft; a receiving groove is machined through the side wall of the rotating rod; a spring is welded to the bottom surface of the receiving groove; a telescopic rod is welded to the end of the spring; and a hanging plate is welded to the end of the telescopic rod. This utility model provides a shot blasting device that facilitates the removal of rust from the inner wall of pipes by allowing for the recycling and reuse of rust-removing shot blasting particles and achieving high cleanliness of the inner wall of pipes.
[0004] The inventors discovered during use that in existing technologies, due to the lack of support and limiting devices, pipelines may be subjected to impact forces, vibrations, or uneven external forces during shot blasting, leading to deformation, bending, or twisting. This is especially true for long or large-sized pipelines, where deformation affects subsequent processing accuracy and assembly quality. Furthermore, without proper support, pipelines are prone to positional shifts or vibrations, causing the shot blasting angle and force to be unevenly applied to the pipeline's inner wall during shot blasting. This results in uneven shot blasting effects, with some areas potentially being insufficiently treated, leaving behind uncleaned impurities or oxide layers, affecting the pipeline's surface quality and the adhesion of subsequent coatings. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the difficulty in providing limiting support for the connecting pipe of the shot blasting device, and to propose an automatic shot blasting equipment for processing the inner wall of a pipe.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic shot blasting device for processing the inner wall of a pipe, comprising a support and a fixing structure. A shot blasting pump is installed inside the support, and a connecting pipe is installed at the output end of the shot blasting pump. A shot blasting device is installed at the end of the connecting pipe away from the shot blasting pump. A pipe body is arranged above the support, and the shot blasting device is arranged inside the pipe body. The pipe body is connected to the support by means of the fixing structure. An auxiliary structure is provided at the end of the pipe body near the connecting pipe. The auxiliary structure includes several clamping frames, each of which is slidably connected to the pipe body. A lead screw is fixedly connected to the side of the clamping frame away from the pipe body. A connecting rail is slidably connected to the surface of the lead screw. A threaded ring is threadedly connected to the arc surface of the lead screw, and the threaded ring abuts against the connecting rail. A connecting ring is fixedly connected to the end of each of the connecting rails that is close to each other. The connecting ring is sleeved on the arc surface of the connecting pipe. Several scale grooves are opened on one side of the connecting rail, and a pointer is fixedly connected to the side of the lead screw near the scale groove.
[0007] The effect achieved by the above components is as follows: when it is necessary to support the connecting pipe of the shot blasting device, the connecting ring is pulled to move, and then the connecting ring is connected to the connecting pipe. The connecting ring drives the connecting rail to move, the connecting rail drives the lead screw to move, the lead screw drives the clamping frame to move, and then the clamping frame is adjusted according to the size of the pipe body. The threaded ring is rotated to move, and then the threaded ring is separated from the connecting rail. Then the lead screw is pulled to move, and the lead screw slides on the inner wall of the connecting rail. After moving to the appropriate position, the threaded ring is tightened to fix it, and then the clamping frame is connected and fixed to the pipe body.
[0008] Preferably, a limiting rod is fixedly connected inside the connecting rail, and the limiting rod is slidably connected to the lead screw.
[0009] The effect achieved by the above components is that the limiting rod can limit the lead screw and prevent the lead screw from sliding during sliding.
[0010] Preferably, the arc surface of the threaded ring is provided with a plurality of slots, and the plurality of slots are evenly distributed on the threaded ring.
[0011] The effect achieved by the above components is that the groove can increase the friction between the hand and the threaded ring, preventing slippage when rotating the threaded ring.
[0012] Preferably, the clamping frame is fixedly connected with an anti-slip pad, which is a rubber pad.
[0013] The effect achieved by the above components is that the anti-slip pad can increase the friction between the clamp frame and the pipe body, and prevent slippage when the clamp frame is connected to the pipe body.
[0014] Preferably, the upper surface of the bracket is provided with a fixing structure, the fixing structure including four connecting parts, all four connecting parts are fixedly connected to the bracket, the end of each connecting part away from the bracket is fixedly connected to a slide rail, the inner wall of the slide rail is slidably connected to a connecting rod, the lower end of the connecting rod is fixedly connected to a screw, the ends of the two screws that are close to each other are threadedly connected to a threaded pipe, the inner walls of the two ends of the threaded pipe are provided with opposite threads, and the ends of the two connecting rods that are close to each other are fixedly connected to a clamp, the clamp abutting against the pipe body.
[0015] The effect achieved by the above components is as follows: when it is necessary to fix the pipe body, the threaded pipe is rotated to move, the threaded pipe drives the screw to move, the screw drives the connecting rod to move, the connecting rod slides on the inner wall of the slide rail, the connecting rod drives the clamping plate to move, and then the clamping plate clamps and fixes the pipe body, thereby facilitating the support of the pipe body.
[0016] Preferably, protective pads are fixedly connected to the sides of the two clamping plates that are close to each other, and the cross-section of the protective pads is arc-shaped.
[0017] The effect achieved by the above components is that the protective pad can protect the clamp and the pipe body, and prevent the clamp from being excessively worn when fixing the pipe body.
[0018] Preferably, the slide rail has grooves on both sides, and a slide rod is slidably connected to the inner wall of the groove, and the slide rod is fixedly connected to the connecting rod.
[0019] The effect achieved by the above components is that the slide bar can limit the connecting rod, preventing the connecting rod from deviating when sliding.
[0020] In summary, the beneficial effects of this utility model are as follows:
[0021] In this invention, through the operation of the auxiliary structure, existing technologies, due to the lack of support and limiting devices, may subject pipelines to impact, vibration, or uneven external forces during shot blasting, leading to deformation, bending, or twisting of the pipeline. Especially in long or large-sized pipelines, deformation affects subsequent processing accuracy and assembly quality. Furthermore, without proper support, pipelines are prone to positional shifts or vibrations, causing the shot blasting angle and force to act unevenly on the pipeline's inner wall during shot blasting. This results in uneven shot blasting effects, with some areas potentially being insufficiently treated, leaving uncleaned impurities or oxide layers, affecting the pipeline's surface quality and subsequent coating adhesion. This device achieves convenient support and limiting of the connecting pipe, not only increasing the stability of shot blasting the pipeline body but also facilitating the support and limiting of the connecting pipe with different pipeline bodies.
[0022] In this invention, by manipulating the fixing structure, it is possible to conveniently clamp and fix pipe bodies of different sizes, greatly improving the adaptability of the support. Attached Figure Description
[0023] Appendix Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0024] Appendix Figure 2 This is a schematic diagram of the auxiliary structure of this utility model;
[0025] Appendix Figure 3 This is a utility model Figure 2 Enlarged view of point A;
[0026] Appendix Figure 4 This is a schematic diagram of the fixing structure of this utility model;
[0027] Appendix Figure 5 This is a utility model Figure 4 Enlarged view of point B.
[0028] The following are the labels in the attached diagram: 1. Bracket; 2. Shot blasting pump; 3. Connecting pipe; 4. Pipe body; 5. Shot blasting device; 6. Auxiliary structure; 601. Connecting ring; 602. Clamping frame; 603. Anti-slip pad; 604. Connecting rail; 605. Lead screw; 606. Threaded ring; 607. Groove; 608. Limiting rod; 609. Pointer; 610. Scale groove; 7. Fixing structure; 71. Slide rail; 72. Slide groove; 73. Threaded pipe; 74. Connecting rod; 75. Clamping plate; 76. Connecting piece; 77. Slide rod; 78. Screw; 79. Protective pad. Detailed Implementation
[0029] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.
[0030] Reference Figure 1 As shown, this utility model provides a technical solution: an automatic shot blasting equipment for processing the inner wall of a pipe, including a support 1 and a fixing structure 7. A shot blasting pump 2 is installed inside the support 1. A connecting pipe 3 is installed at the output end of the shot blasting pump 2. A shot blasting device 5 is installed at the end of the connecting pipe 3 away from the shot blasting pump 2. A pipe body 4 is arranged above the support 1. The shot blasting device 5 is arranged inside the pipe body 4. The pipe body 4 is connected to the support 1 by means of the fixing structure 7. An auxiliary structure 6 is provided at the end of the pipe body 4 near the connecting pipe 3. The fixing structure 7 is provided on the upper surface of the support 1.
[0031] The specific setup and function of its auxiliary structure 6 and fixed structure 7 will be discussed below.
[0032] Reference Figure 2 , Figure 3 As shown in this embodiment: the auxiliary structure 6 includes several clamping frames 602, each of which is slidably connected to the pipe body 4. A screw rod 605 is fixedly connected to the side of the clamping frame 602 away from the pipe body 4. A connecting rail 604 is slidably connected to the surface of the screw rod 605. A threaded ring 606 is threadedly connected to the arc surface of the screw rod 605. The threaded ring 606 abuts against the connecting rail 604. A connecting ring 601 is fixedly connected to one end of each of the connecting rails 604 that is close to each other. The connecting ring 601 is sleeved on the arc surface of the connecting pipe 3. Several scale grooves 610 are opened on one side of the connecting rail 604. A pointer 609 is fixedly connected to the side of the screw rod 605 that is close to the scale groove 610. When it is necessary to support the connecting pipe 3 of the shot blasting device 5, pull the connecting ring 601 to move it, and then connect the connecting ring 601 to the connecting pipe 3. The connecting ring 601 drives the connecting rail 604 to move, the connecting rail 604 drives the lead screw 605 to move, and the lead screw 605 drives the clamping frame 602 to move. Then, adjust the clamping frame 602 according to the size of the pipe body 4, rotate the threaded ring 606 to move it, and then separate the threaded ring 606 from the connecting rail 604. Then pull the lead screw 605 to move it, and the lead screw 605 slides on the inner wall of the connecting rail 604. After moving to the appropriate position, tighten the threaded ring 606 to fix it, and then connect and fix the clamping frame 602 to the pipe body 4. The connecting rail 604 is fixedly connected to the inside with a limit rod 608, and the limit rod 608 is slidably connected to the lead screw 605. The limiting rod 608 can limit the lead screw 605 to prevent slippage during sliding. The threaded ring 606 has several slots 607 evenly distributed on its arc surface. The slots 607 increase the friction between the hand and the threaded ring 606, preventing slippage during rotation. An anti-slip pad 603, made of rubber, is fixedly connected to one side of the clamping frame 602. The anti-slip pad 603 increases the friction between the clamping frame 602 and the pipe body 4, preventing slippage during connection.
[0033] Reference Figure 3 , Figure 4As shown in this embodiment: the fixing structure 7 includes four connecting parts 76, all four connecting parts 76 are fixedly connected to the bracket 1, the end of the connecting part 76 away from the bracket 1 is fixedly connected to a slide rail 71, the inner wall of the slide rail 71 is slidably connected to a connecting rod 74, the lower end of the connecting rod 74 is fixedly connected to a screw 78, the ends of the two screws 78 that are close to each other are threadedly connected to a threaded pipe 73, the inner walls of the two ends of the threaded pipe 73 are provided with opposite threads, and the ends of the two connecting rods 74 that are close to each other are fixedly connected to a clamping plate 75, the clamping plate 75 abuts against the pipe body 4. When it is necessary to fix the pipe body 4, the threaded pipe 73 is rotated to move it. The threaded pipe 73 drives the screw 78 to move, and the screw 78 drives the connecting rod 74 to move. The connecting rod 74 slides on the inner wall of the slide rail 71, and the connecting rod 74 drives the clamping plate 75 to move. Then, the clamping plate 75 clamps and fixes the pipe body 4, thus facilitating the support of the pipe body 4. Protective pads 79 are fixedly connected to the sides of the two clamping plates 75 that are close to each other. The protective pads 79 have an arc-shaped cross-section. The protective pads 79 can protect the clamping plate 75 and the pipe body 4, preventing excessive wear of the clamping plate 75 when fixing the pipe body 4. Slide grooves 72 are opened on both sides of the slide rail 71. Slide rods 77 are slidably connected to the inner wall of the slide grooves 72. The slide rods 77 are fixedly connected to the connecting rod 74. The slide rods 77 can limit the connecting rod 74 to prevent the connecting rod 74 from deviating when sliding.
[0034] Detailed Instructions for Use: When support is needed for the connecting pipe 3 of the shot blasting device 5, pull the connecting ring 601 to move it, then connect the connecting ring 601 to the connecting pipe 3. The connecting ring 601 drives the connecting rail 604 to move, the connecting rail 604 drives the lead screw 605 to move, and the lead screw 605 drives the clamping frame 602 to move. Then, adjust the clamping frame 602 according to the size of the pipe body 4, rotate the threaded ring 606 to move it, then separate the threaded ring 606 from the connecting rail 604, and then pull the lead screw 605 to move it. 5. Slide the connecting rail 604 along its inner wall. After moving to the appropriate position, tighten the threaded ring 606 to fix it. Then connect and fix the clamping frame 602 to the pipe body 4. The limiting rod 608 can limit the lead screw 605 to prevent it from sliding during sliding. The groove 607 can increase the friction between the hand and the threaded ring 606 to prevent it from sliding when rotating the threaded ring 606. The anti-slip pad 603 can increase the friction between the clamping frame 602 and the pipe body 4 to prevent it from sliding when the clamping frame 602 and the pipe body 4 are connected.
[0035] When it is necessary to fix the pipe body 4, the threaded pipe 73 is rotated to move it. The threaded pipe 73 drives the screw 78 to move, and the screw 78 drives the connecting rod 74 to move. The connecting rod 74 slides on the inner wall of the slide rail 71. The connecting rod 74 drives the clamping plate 75 to move, and then the clamping plate 75 clamps and fixes the pipe body 4, thereby facilitating the support of the pipe body 4. The protective pad 79 can protect the clamping plate 75 and the pipe body 4 to prevent the clamping plate 75 from excessive wear when fixing the pipe body 4. The sliding rod 77 can limit the connecting rod 74 to prevent the connecting rod 74 from deviating when sliding.
Claims
1. An automatic shot blasting equipment for processing the inner wall of a pipe, comprising a support (1) and a fixing structure (7), characterized in that: A shot blasting pump (2) is installed inside the support (1). A connecting pipe (3) is installed at the output end of the shot blasting pump (2). A shot blasting device (5) is installed at the end of the connecting pipe (3) away from the shot blasting pump (2). A pipe body (4) is arranged above the support (1). The shot blasting device (5) is arranged inside the pipe body (4). The pipe body (4) is connected to the support (1) by means of a fixing structure (7). An auxiliary structure (6) is provided at the end of the pipe body (4) near the connecting pipe (3). The auxiliary structure (6) includes several clamping frames (602). Several clamping frames (602) are slidably connected to the pipe body (4). (602) A lead screw (605) is fixedly connected to the side away from the pipe body (4). A connecting rail (604) is slidably connected to the surface of the lead screw (605). A threaded ring (606) is threadedly connected to the arc surface of the lead screw (605). The threaded ring (606) abuts against the connecting rail (604). A connecting ring (601) is fixedly connected to one end of several connecting rails (604) that are close to each other. The connecting ring (601) is sleeved on the arc surface of the connecting pipe (3). Several scale grooves (610) are opened on one side of the connecting rail (604). A pointer (609) is fixedly connected to the side of the lead screw (605) that is close to the scale groove (610).
2. The automatic shot blasting equipment for processing the inner wall of a pipe according to claim 1, characterized in that: The connecting rail (604) is internally fixedly connected to a limiting rod (608), and the limiting rod (608) is slidably connected to the lead screw (605).
3. The automatic shot blasting equipment for processing the inner wall of a pipe according to claim 1, characterized in that: The threaded ring (606) has a plurality of slots (607) on its arc surface, and the plurality of slots (607) are evenly distributed on the threaded ring (606).
4. The automatic shot blasting equipment for processing the inner wall of a pipe according to claim 1, characterized in that: An anti-slip pad (603) is fixedly connected to one side of the clamping frame (602), and the anti-slip pad (603) is a rubber pad.
5. The automatic shot blasting equipment for processing the inner wall of a pipe according to claim 1, characterized in that: The upper surface of the bracket (1) is provided with a fixing structure (7), which includes four connectors (76). All four connectors (76) are fixedly connected to the bracket (1). A slide rail (71) is fixedly connected to the end of the connector (76) away from the bracket (1). A connecting rod (74) is slidably connected to the inner wall of the slide rail (71). A screw (78) is fixedly connected to the lower end of the connecting rod (74). A threaded tube (73) is threaded to the end of the two screws (78) that are close to each other. Opposite threads are opened on the inner walls of both ends of the threaded tube (73). A clamp (75) is fixedly connected to the end of the two connecting rods (74) that are close to each other. The clamp (75) abuts against the pipe body (4).
6. The automatic shot blasting equipment for processing the inner wall of a pipe according to claim 5, characterized in that: Protective pads (79) are fixedly connected to the sides of the two clamps (75) that are close to each other, and the cross section of the protective pads (79) is arc-shaped.
7. An automatic shot blasting equipment for processing the inner wall of a pipe according to claim 5, characterized in that: The slide rail (71) has a slide groove (72) on both sides, and a slide rod (77) is slidably connected to the inner wall of the slide groove (72). The slide rod (77) is fixedly connected to the connecting rod (74).