A steel pipe shot blasting line
By using multiple V-shaped rollers and lifting plates to clamp the steel pipes in the steel pipe shot blasting line, and equipping it with screening and conveying mechanisms, the problems of lateral displacement and diameter adaptability during the steel pipe shot blasting process are solved, and the efficient recycling of shot is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN SHUDI PIPE IND CO LTD
- Filing Date
- 2025-07-26
- Publication Date
- 2026-07-14
AI Technical Summary
Existing shot blasting lines for steel pipes suffer from problems such as difficulty in controlling the lateral displacement of the steel pipes, difficulty in clamping steel pipes of different diameters, and low shot recycling rate.
Multiple V-shaped rollers are used to horizontally convey steel pipes, combined with lifting plates and adjusting frames to achieve stable clamping. The projectiles are also equipped with screening and conveying mechanisms for recycling.
It enables stable conveying of steel pipes and adaptability to different diameters, improves the stability and flexibility of use, and achieves efficient screening and recycling of projectiles.
Smart Images
Figure CN224488782U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel pipe processing technology, specifically to a steel pipe shot blasting cleaning line. Background Technology
[0002] Shot blasting is a common surface treatment process, mainly used for metal workpieces. The core principle is to use a high-speed jet of shot to impact the surface of the workpiece to achieve a specific purpose. During the processing of steel pipes, shot blasting is required to remove impurities such as oxide scale, rust, and old coatings from the surface, improve fatigue strength and stress corrosion resistance, and improve surface roughness.
[0003] Existing patent CN216422221U discloses a steel pipe shot blasting line. The steel pipe is placed on a conveyor cylinder, and then a first motor starts operating, causing a first rotating shaft to rotate. This rotation, via a transmission belt, drives the conveyor cylinder to rotate, facilitating the transport of the steel pipe to the inlet. The liner is opened, and the steel pipe is placed on a second roller. A telescopic rod pushes an adjustment mechanism downwards, allowing the roller to fit against the surface of the steel pipe. A second motor then rotates a third rotating shaft, which, via a second bevel gear, drives the roller to rotate, causing the roller to roll and facilitating comprehensive processing of the steel pipe by the shot blasting machine.
[0004] The aforementioned patent has the following defects:
[0005] When steel pipes are transported by a conveyor cylinder, the lack of limiting devices makes it easy for the steel pipes to shift laterally, making it difficult to ensure that the steel pipes enter the feed inlet smoothly.
[0006] It is difficult to clamp steel pipes of different diameters;
[0007] Since the shot is not further processed, the recycling rate is low. Therefore, a steel pipe shot blasting cleaning line is proposed. Utility Model Content
[0008] The purpose of this utility model is to provide a steel pipe shot blasting cleaning line to solve the problems raised in the background art.
[0009] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0010] A shot blasting line for steel pipes includes a feeding frame, a fixed frame, a cleaning box, and a discharging frame arranged sequentially. The feeding frame and discharging frame are each equipped with multiple synchronously rotating V-shaped rollers. The fixed frame has multiple rotating rollers arranged in a V-shape. A lifting plate is slidably mounted on the fixed frame. Two synchronously opposing sliding adjustment frames are mounted on the lifting plate. Drive rollers are rotatably mounted on the adjustment frames. The cleaning box has two openings. The cleaning box contains a shot blasting machine body and a screening mechanism, and also includes a conveying mechanism. The screening mechanism is used to screen the shot, and the conveying mechanism is used to transport the shot to the shot blasting machine body.
[0011] Furthermore, a drive motor is provided on the lifting plate, a drive gear is provided on the output shaft of the drive motor, and a drive rack that meshes with the drive gear is provided on the adjusting frame.
[0012] Furthermore, the surface of the drive roller is constructed with herringbone-shaped anti-slip grooves.
[0013] Furthermore, a sealing curtain is provided inside the opening, and the sealing curtain is composed of multiple layers of rubber sheets stacked together.
[0014] Furthermore, the screening mechanism includes a sliding frame slidably disposed within a cleaning box, a spring disposed between the sliding frame and the cleaning box, a screen disposed on the sliding frame, and a driving component disposed on the cleaning box for intermittently sliding the sliding frame in one direction.
[0015] Furthermore, the driving component includes a fixed motor mounted on the cleaning box, a cam mounted on the output shaft of the fixed motor, and a roller rotatably mounted on the sliding frame that rolls and engages with the cam.
[0016] Furthermore, the screen is slidably mounted on the sliding frame, and the cleaning box has a maintenance port for the screen to pass through. The cleaning box is detachably equipped with a sealing plate for sealing or unsealing the maintenance port.
[0017] Furthermore, the conveying mechanism includes a conveying cylinder, a spiral conveying rod is rotatably arranged inside the conveying cylinder, and a feed pipe and a discharge pipe with opposite inclination directions are connected to the conveying cylinder. The bottom of the cleaning box is conical and connected to the feed pipe, and the discharge pipe is connected to the shot blasting machine body.
[0018] The beneficial effects of this utility model are as follows: When in use, this utility model uses multiple V-shaped rollers to horizontally transport the steel pipe, which avoids lateral displacement of the steel pipe and improves the stability of use. It can clamp steel pipes of different diameters, which improves the flexibility and adaptability of use. It can also screen and recycle the shot after shot blasting, thus making it more practical. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural view of the present invention;
[0020] Figure 2 This is a three-dimensional view of part of the structure of this utility model;
[0021] Figure 3 This is a utility model Figure 2 Enlarged view of point A in the middle;
[0022] Figure 4 This is a three-dimensional view of another part of the structure of this utility model;
[0023] Figure 5 This is a utility model Figure 4 A three-dimensional sectional view;
[0024] Figure 6 This is a utility model Figure 5 Enlarged view of point B in the middle;
[0025] Figure 7 This is a utility model Figure 4 Another perspective of a three-dimensional sectional view;
[0026] Figure 8 This is a utility model Figure 7 Enlarged view of point C in the middle.
[0027] Reference numerals: 1. Feed rack; 2. Fixed frame; 3. Cleaning box; 4. Discharge rack; 5. V-shaped roller; 6. Rotating roller; 7. Lifting plate; 8. Adjusting frame; 9. Drive roller; 10. Through port; 11. Shot blasting machine body; 12. Drive motor; 13. Drive gear; 14. Drive rack; 15. Anti-slip groove; 16. Sealing curtain; 17. Sliding frame; 18. Spring; 19. Screen; 20. Fixed motor; 21. Cam; 22. Roller; 23. Maintenance port; 24. Sealing plate; 25. Conveying cylinder; 26. Spiral conveying rod; 27. Feed pipe; 28. Discharge pipe. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0029] like Figures 1-7As shown in the figure, an embodiment of the present invention discloses a steel pipe shot blasting line, comprising a feeding rack 1, a fixing rack 2, a cleaning box 3, and a discharging rack 4 arranged sequentially. Multiple synchronously rotating V-shaped rollers 5 are configured on both the feeding rack 1 and the discharging rack 4. The axes of the V-shaped rollers 5 are horizontal, and the multiple V-shaped rollers 5 are evenly distributed horizontally. The multiple V-shaped rollers 5 are connected by a chain and sprocket assembly, that is, each V-shaped roller 5 is coaxially fixed with a sprocket, and the chain is wound around the multiple sprockets. A motor is fixed on both the feeding rack 1 and the discharging rack 4. The motor's output shaft is connected to one of the V-shaped rollers 5. When the motor operates, the output shaft rotates, driving one of the V-shaped rollers 5 to rotate. This, in turn, drives the remaining V-shaped rollers 5 to rotate via a chain and sprocket assembly, achieving synchronous rotation of multiple V-shaped rollers 5. Multiple rotating rollers 6 arranged in a V-shape are rotatably mounted on the fixed frame 2. The axes of the rotating rollers 6 are horizontal and perpendicular to the axes of the V-shaped rollers 5. A lifting plate 7 is slidably mounted on the fixed frame 2, sliding vertically. A vertically oriented cylinder push rod is fixed to the fixed frame 2. The movable end of the cylinder is connected to the lifting plate 7. The extension or retraction of the movable end of the cylinder push rod drives the lifting plate 7 to slide downwards or upwards. Two synchronously sliding counter-sliding adjusting frames 8 are mounted on the lifting plate 7. The adjusting frames 8 slide horizontally and are equipped with a rotatable drive roller 9. The axis of the drive roller 9 is horizontal and parallel to the axis of the rotating roller 6. A motor is fixed to one of the adjusting frames 8, and the output shaft of the motor is connected to the drive roller 9. The cleaning box 3 has two openings 10, which are the feed inlet and the discharge outlet, respectively. The feed inlet faces the feed rack 1, and the discharge outlet faces the discharge rack 4. The cleaning box 3 is equipped with a shot blasting machine body 11 and a screening mechanism. The shot blasting machine body 11 is an existing structure, and its specific structure is not shown in the attached drawings of the instruction manual. It uses high-speed jets of shot to impact the surface of the steel pipe, removing impurities such as oxide scale, rust, and old coatings from the surface of the steel pipe, improving fatigue strength and stress corrosion resistance, and improving surface roughness. It also includes a conveying mechanism. The screening mechanism is used to screen the shot, and the conveying mechanism is used to transport the shot to the shot blasting machine body 11.
[0030] In the initial state, the lifting plate 7 is at its highest position, and the two adjusting frames 8 are far apart. During use, multiple V-shaped rollers 5 are driven to rotate synchronously, placing the steel pipe horizontally on the V-shaped rollers 5 of the feeding frame 1. The simultaneous horizontal conveying of the steel pipe by the multiple V-shaped rollers 5 prevents lateral displacement. Then, the steel pipe rests on multiple rotating rollers 6, causing the lifting plate 7 to slide downwards. This drives the two adjusting frames 8 to slide synchronously in opposite directions until they move closer together, until both drive rollers 9 roll and overlap with the surface of the steel pipe, thus clamping steel pipes of different diameters. One of the drive rollers 9 is driven to rotate, which in turn drives the steel pipe to rotate, so that the steel pipe rotates while moving horizontally. Then the steel pipe enters the cleaning box 3 through the feed port. The shot blasting machine body 11 performs circumferential shot blasting on the steel pipe. The impurities and shot fall together after shot blasting. The shot is screened by the screening mechanism. The shot passes through the screening mechanism, while the impurities remain on the screening mechanism. The shot is then conveyed to the shot blasting machine body 11 by the conveying mechanism, so that the shot can be recycled. Finally, the steel pipe passes through the discharge port and is located on multiple V-shaped rollers 5 on the discharge frame 4.
[0031] In summary, when in use, this utility model uses multiple V-shaped rollers 5 to horizontally transport the steel pipe, avoiding lateral displacement of the steel pipe and improving the stability of use. It can clamp steel pipes of different diameters, improving the flexibility and adaptability of use. It can also screen and recycle the shot after shot blasting, thus making it more practical.
[0032] like Figure 3 As shown, a further technical solution of the present invention is disclosed. A drive motor 12 is provided on the lifting plate 7. The drive motor 12 is fixed on the lifting plate 7 and its output shaft is in the vertical direction. A drive gear 13 is provided on the output shaft of the drive motor 12. The drive gear 13 is fixed on the output shaft of the drive motor 12 and the two are coaxially distributed. A drive rack 14 that meshes with the drive gear 13 is provided on the adjusting frame 8. The drive rack 14 is in the horizontal direction and is fixed on the adjusting frame 8.
[0033] Referring to the above, when in use, the output shaft of the drive motor 12 rotates forward, driving the drive gear 13 to rotate together. The two drive racks 14 move synchronously in opposite directions due to meshing, thereby driving the two adjustment frames 8 to slide synchronously in opposite directions to move closer to each other. Conversely, when the output shaft of the drive motor 12 rotates in reverse, it will drive the two adjustment frames 8 to slide synchronously in opposite directions to move further away from each other.
[0034] like Figure 3 As shown, a further technical solution of the present invention is disclosed. The surface of the drive roller 9 is constructed with a herringbone-shaped anti-slip groove 15. The number of anti-slip grooves 15 is multiple and they are evenly distributed along the circumference of the drive roller 9.
[0035] Referring to the above, during use, the design of multiple anti-slip grooves 15 can increase the friction between the drive roller 9 and the steel pipe, allowing the steel pipe to rotate smoothly with the drive roller 9, avoiding the phenomenon of idling, and improving the stability of use.
[0036] like Figure 4 As shown, a further technical solution of the present utility model is disclosed. A sealing curtain 16 is provided in the opening 10. The sealing curtain 16 is fixed in the opening 10 and is composed of multiple layers of rubber sheets.
[0037] Referring to the above, during use, the sealing curtain 16 can block the opening 10 to a certain extent, reducing the dust emission during the shot blasting process.
[0038] like Figure 6 As shown, the specific structure of the screening mechanism of this utility model is disclosed. The screening mechanism includes a sliding frame 17 slidably disposed in the cleaning box 3. The sliding frame 17 slides in the horizontal direction. A spring 18 is disposed between the sliding frame 17 and the cleaning box 3. The two ends of the spring 18 are fixedly connected to the sliding frame 17 and the cleaning box 3 respectively. A screen 19 is disposed on the sliding frame 17. The screen 19 is in the horizontal direction. A driving member is disposed on the cleaning box 3 for driving the sliding frame 17 to slide intermittently in one direction.
[0039] Referring to the above, in the initial state, the sliding frame 17 is in the initial position and the spring 18 is in the natural state. When the projectile and impurities fall together, the driving component drives the sliding frame 17 to slide intermittently in one direction. The sliding frame 17 first slides to the limit position, and the spring 18 is compressed. Then the spring 18 returns to the natural state, and the sliding frame 17 slides back to the initial position due to elastic potential energy. This process is repeated to achieve linear reciprocating sliding of the sliding frame 17, which drives the screen 19 to move together. The reciprocating screen 19 separates the projectile and impurities. The projectile continues to fall through the screen 19, while the impurities remain on the screen 19.
[0040] like Figure 6 As shown, the specific structure of the driving component of this utility model is disclosed. The driving component includes a fixed motor 20 mounted on the cleaning box 3. The fixed motor 20 is fixed on the cleaning box 3 and its output shaft is in the vertical direction. A cam 21 is mounted on the output shaft of the fixed motor 20. The cam 21 is fixed on the output shaft of the fixed motor 20 and the two are coaxially distributed. A roller 22 is rotatably mounted on the sliding frame 17 and rolls against the cam 21. The axis of the roller 22 is in the vertical direction. The cam 21 has a connected circumferential surface and a protruding surface.
[0041] Referring to the above, in the initial state, the sliding frame 17 is located in the initial position, and the circumferential surfaces of the roller 22 and the cam 21 roll and overlap. In use, the fixed motor 20 is activated, the output shaft rotates, and the cam 21 rotates together. When the cam 21 rotates once, the roller 22 rolls and overlaps with the circumferential surface and the protruding surface in sequence. When the roller 22 rolls and overlaps with the protruding surface, it forces the roller 22 and the sliding frame 17 to move together to the limit position. Then, the sliding frame 17 slides back to the initial position due to elastic potential energy. This process is repeated to achieve intermittent unidirectional sliding of the sliding frame 17.
[0042] like Figures 6-8 As shown, a further technical solution of this utility model is disclosed. The screen 19 is slidably mounted on the sliding frame 17. The screen 19 slides in the horizontal direction. Slider blocks are constructed on both opposite sides of the screen 19. The sliding frame 17 is constructed with two sliding grooves. The two sliders are slidably engaged with the two sliding grooves respectively. The cleaning box 3 is provided with a maintenance port 23 for the screen 19 to pass through. The cleaning box 3 is detachably provided with a blocking plate 24 for blocking or unblocking the maintenance port 23. The blocking plate 24 is inserted into the maintenance port 23 and abuts against the screen 19. The blocking plate 24 is fixed to the cleaning box 3 by bolts. The cleaning box 3 is constructed with threaded holes. The blocking plate 24 is constructed with through holes. The free end of the bolt passes through the through holes and is connected to the threaded holes.
[0043] Referring to the above, in the initial state, the screen 19 is installed on the sliding frame 17, the slider is located in the slide groove, the sealing plate 24 is installed on the cleaning box 3 and the maintenance port 23 is sealed, and the sealing plate 24 and the screen 19 are in contact and overlap. When not in use, the screen 19 can be disassembled by removing the sealing plate 24 and unsealing the maintenance port 23, so that the screen 19 can slide away from the sliding frame 17 and exit the maintenance port 23, and the slider can exit the slide groove, thereby realizing the disassembly of the screen 19, which is convenient for handling residual impurities and for cleaning the screen 19. The screen 19 can be installed by passing through the maintenance port 23 and reinstalling it on the sliding frame 17, with the slider located in the slide groove, and the sealing plate 24 installed on the cleaning box 3 and the maintenance port 23 sealed, with the sealing plate 24 and the screen 19 in contact and overlap.
[0044] like Figure 7 As shown, the specific structure of the conveying mechanism of this utility model is disclosed. The conveying mechanism includes a conveying cylinder 25, which is vertical. A spiral conveying rod 26 is rotatably arranged inside the conveying cylinder 25. The spiral conveying rod 26 is vertical. A motor is fixed on the conveying cylinder 25. The output shaft of the motor is connected to the spiral conveying rod 26. When the motor works, the output shaft rotates, which drives the spiral conveying rod 26 to rotate. The conveying cylinder 25 is connected to a feed pipe 27 and a discharge pipe 28 with opposite inclination directions. The bottom of the cleaning box 3 is conical and connected to the feed pipe 27. The discharge pipe 28 is connected to the shot blasting machine body 11.
[0045] Referring to the above, as the shot continues to fall through the screen 19, it is guided into the conveying cylinder 25 through the feed pipe 27, which drives the spiral conveying rod 26 to rotate forward, conveying the shot from bottom to top. When the shot reaches the highest point, it is guided to the shot blasting machine body 11 through the discharge pipe 28, so as to realize the delivery of the shot to the shot blasting machine body 11.
[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A steel pipe shot blasting line, characterized by, Including the feeding frame (1) that distributes in turn, fixed frame (2), cleaning box (3) and discharge frame (4), the feeding frame (1) and discharge frame (4) are all configured with multiple synchronous rotation V-shaped roller (5), the fixed frame (2) is rotationally provided with multiple V-shaped arrangement rotating roller (6), the fixed frame (2) is slidably provided with lifting plate (7), the lifting plate (7) is configured with two synchronous reverse sliding adjustment frame (8), the adjustment frame (8) is rotationally provided with drive roller (9), the cleaning box (3) is structured with two through port (10), the cleaning box (3) is provided with shot blasting machine body (11) and screening mechanism, further including conveying mechanism, screening mechanism is used to screen the pellet, conveying mechanism is used to convey the pellet to shot blasting machine body (11).
2. A steel pipe shot blast cleaning line according to claim 1, characterized in that The lifting plate (7) is provided with a drive motor (12), and the output shaft of the drive motor (12) is provided with a drive gear (13), and the adjustment frame (8) is provided with a drive rack (14) engaged with the drive gear (13).
3. The steel pipe shot blast cleaning line according to claim 1, characterized in that The surface of the drive roller (9) is structured with a chevron-shaped anti-skid groove (15).
4. The steel pipe blast-cleaning line according to claim 1, characterized in that, The through port (10) is provided with a sealing curtain (16), which is composed of multiple layers of rubber sheets.
5. The steel pipe blast cleaning line according to claim 1, characterized in that, The screening mechanism includes a sliding frame (17) slidably disposed in the cleaning box (3), a spring (18) disposed between the sliding frame (17) and the cleaning box (3), a screen (19) disposed on the sliding frame (17), and a drive member disposed on the cleaning box (3) for driving the sliding frame (17) to slide intermittently in one direction.
6. A steel pipe shot blast cleaning line according to claim 5, characterized in that The drive member includes a fixed motor (20) disposed on the cleaning box (3), a cam (21) disposed on the output shaft of the fixed motor (20), and a roller (22) rotationally disposed on the sliding frame (17) and rollingly engaged with the cam (21).
7. A steel pipe shot blast cleaning line according to claim 5, characterized in that The screen (19) is slidably disposed on the sliding frame (17), and the cleaning box (3) is provided with a maintenance opening (23) for the screen (19) to pass through, and the cleaning box (3) is detachably provided with a blocking plate (24) for blocking or unblocking the maintenance opening (23).
8. The steel pipe blast-cleaning line according to claim 1, characterized in that The conveying mechanism includes a conveying cylinder (25), a spiral conveying rod (26) rotationally disposed in the conveying cylinder (25), an inclined feeding pipe (27) and an inclined discharging pipe (28) communicated with the conveying cylinder (25), the inner bottom of the cleaning box (3) is structured in a conical shape and communicated with the feeding pipe (27), and the discharging pipe (28) is communicated with the shot blasting machine body (11).