A sand blasting machine for rust removal of steel

Abstract

This application relates to the field of sandblasting machine technology and discloses a sandblasting machine for steel rust removal, including a base. A sandblasting box is fixedly installed on the top of the base. The sandblasting box is equipped with a sandblasting mechanism and a steel conveying mechanism. The sandblasting mechanism includes a shot blasting container, a sand pump, a suction pipe, a discharge pipe, a discharge cylinder, a conveying pipe, a boom, a U-shaped pipe, multiple trumpet-shaped nozzles, a booster air pump, and an air supply pipe. The shot blasting container and the booster air pump are both fixedly installed on the top of the sandblasting box. This application has the following advantages and effects: it can form an all-round sandblasting coverage from all sides and vertical directions of the steel, effectively eliminating blind spots in sandblasting rust removal, ensuring that all parts of the steel surface are uniformly impacted by shot blasting abrasive, greatly improving the consistency of rust removal, and is suitable for continuous and stable conveying of steel of different widths, realizing continuous rust removal operation, significantly improving processing efficiency, and is especially suitable for batch steel rust removal processing.

Description

Technical Field

[0001] This application relates to the field of sandblasting machine technology, and in particular to a sandblasting machine for removing rust from steel. Background Technology

[0002] Rust removal is a crucial step in ensuring the performance and service life of steel during processing, manufacturing, and maintenance. Among existing rust removal methods, sandblasting machines are widely used due to their high rust removal efficiency.

[0003] In the existing technology, traditional sandblasting machines for steel rust removal mostly use a single nozzle or a few nozzles with fixed directions, which makes it difficult to achieve all-round coverage of the steel for sandblasting and rust removal. It is easy to form sandblasting blind spots on the edges, corners and sides of the steel, resulting in uneven rust removal. The rust removal effect varies greatly from part to part of the steel surface, which affects the subsequent processing and use of the steel.

[0004] Therefore, we propose a sandblasting machine for steel rust removal to solve the above problems. Utility Model Content

[0005] The purpose of this application is to provide a sandblasting machine for steel rust removal, which can form an all-round sandblasting coverage from all sides and top and bottom of the steel, effectively eliminating blind spots in sandblasting rust removal, ensuring that all parts of the steel surface are subjected to uniform impact of shot blasting abrasive, greatly improving the consistency of rust removal, and can be used for continuous and stable conveying of steel of different widths, realizing continuous rust removal operation and improving processing efficiency.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution: a sandblasting machine for rust removal of steel, comprising a base, a sandblasting box fixedly installed on the top of the base, a sandblasting mechanism and a steel conveying mechanism provided on the sandblasting box, the sandblasting mechanism including a shot blasting container, a gravel pump, a suction pipe, a discharge pipe, a discharge cylinder, a conveying pipe, a boom, a U-shaped pipe, multiple trumpet-shaped nozzles, a booster air pump and an air supply pipe, the shot blasting container and the booster air pump being fixedly installed on the top of the sandblasting box, the gravel pump being fixedly installed on the right outer wall of the shot blasting container, one end of the suction pipe being fixedly connected to the suction end of the gravel pump, and the other end of the suction pipe being fixedly connected to the shot blasting container. One end of the discharge pipe is fixedly connected to the discharge end of the gravel pump. The discharge cylinder is fixedly installed on the top of the sandblasting box. The bottom of the discharge cylinder extends into the sandblasting box. The end of the discharge pipe away from the gravel pump extends into the discharge cylinder. The conveying pipe is fixedly connected to the bottom of the discharge cylinder. The hanger is fixedly installed on the top inner wall of the sandblasting box. The U-shaped pipe is fixedly installed at the bottom end of the hanger. The bottom end of the conveying pipe is fixedly connected to the U-shaped pipe. Multiple trumpet-shaped nozzles are fixedly installed on the inner wall of the U-shaped pipe and are evenly distributed. Multiple trumpet-shaped nozzles are connected to the U-shaped pipe. One end of the air supply pipe is fixedly connected to the air outlet of the booster air pump. The other end of the air supply pipe extends into the discharge cylinder.

[0007] By adopting the above technical solution, multiple evenly distributed trumpet-shaped nozzles can form an all-round sandblasting coverage from all sides and top and bottom of the steel, effectively eliminating the sandblasting blind spots of traditional sandblasting machines, ensuring that all parts of the steel surface can be impacted by uniform shot blasting abrasive, greatly improving the consistency of rust removal. Under the synergistic effect of the booster air pump and the gravel pump, the shot blasting abrasive can be driven by the high-pressure airflow to be ejected at high speed from multiple trumpet-shaped nozzles.

[0008] A further provision of this application is that the end of the discharge pipe located inside the discharge cylinder is lower than the end of the gas supply pipe located inside the discharge cylinder.

[0009] By adopting the above technical solutions, the high-speed and stable ejection of shot peening abrasive is ensured.

[0010] A further feature of this application is that the top of the shot peening container is provided with a feeding port.

[0011] By adopting the above technical solution, it is convenient to add shot peening abrasive into the shot peening container.

[0012] A further configuration of this application is as follows: the steel conveying mechanism includes two hydraulic cylinders, two horizontal beams, two U-shaped plates (first type), two U-shaped plates (second type), four rotating shafts, four I-shaped conveying rollers, four L-shaped seats, and four motors. The two hydraulic cylinders are respectively fixedly installed on the left and right outer walls of the sandblasting box, and the output shaft ends of the two hydraulic cylinders extend into the sandblasting box. The two horizontal beams are respectively fixedly installed on the output shaft ends of the corresponding hydraulic cylinders. The two U-shaped plates (first type) are respectively fixedly installed on the front end of the corresponding horizontal beam, and the two U-shaped plates (second type) are respectively fixedly installed on the rear end of the corresponding horizontal beam. The four rotating shafts are respectively rotatably installed on the two U-shaped plates (first type) and the two U-shaped plates (second type). The four I-shaped conveying rollers are respectively fixedly sleeved on the corresponding rotating shafts. The four L-shaped seats are respectively fixedly installed on the bottom of the two U-shaped plates (first type) and the two U-shaped plates (second type). The four motors are respectively fixedly installed on the corresponding L-shaped seats, and the output shaft ends of the four motors are respectively fixedly connected to the bottom end of the corresponding rotating shaft.

[0013] By adopting the above technical solution and utilizing the telescopic feature of the two hydraulic cylinders, the distance between the two horizontal beams can be adjusted, making it suitable for horizontal linear conveying of steel of different widths. Four motors can drive the corresponding rotating shafts to rotate, thereby causing the four I-shaped conveying rollers to rotate simultaneously. Under the synergistic effect of the four I-shaped conveying rollers, the steel can be stably and continuously conveyed horizontally in a straight line.

[0014] A further feature of this application is that the outer surfaces of the four I-shaped conveyor rollers are provided with anti-slip textures.

[0015] By adopting the above technical solution, the friction between the I-shaped conveyor roller and the steel can be enhanced, avoiding slippage during the conveying process and ensuring stable movement of the steel.

[0016] A further provision of this application is that the U-shaped pipe is located between U-shaped plate one and U-shaped plate two.

[0017] By adopting the above technical solutions, stable and continuous conveying and rust removal of steel plates can be guaranteed.

[0018] A further provision of this application is that a feed inlet is provided on the front side wall of the sandblasting box, and a discharge outlet is provided on the rear side wall of the sandblasting box.

[0019] The above technical solution facilitates the entry and exit of steel from the sandblasting box.

[0020] A further feature of this application is that: a shielding soft curtain is fixedly installed on both the front and rear side walls of the sandblasting box, and the two shielding soft curtains are respectively adapted to the inlet and outlet.

[0021] By adopting the above technical solution, the shielding soft curtain can effectively block the abrasive splashes and dust from spreading out of the sandblasting box, reducing pollution to the surrounding environment.

[0022] A further feature of this application is that an arc-shaped screen is fixedly installed inside the sandblasting box, located below the U-shaped pipe, and the arc-shaped screen has a structure that convexes upward from both sides to the middle.

[0023] By adopting the above technical solution, the used shot peening abrasive can be screened, so that qualified and usable shot peening abrasive remains above the arc-shaped screen, while broken shot peening abrasive and rust residue impurities pass through the screen holes on the arc-shaped screen and remain on the bottom inner wall of the sandblasting box.

[0024] A further provision of this application is that an upper cleaning port and a lower cleaning port are provided on the front side wall of the sandblasting box, the upper cleaning port is located above the arc-shaped screen, and the lower cleaning port is located below the arc-shaped screen. An upper cleaning door and a lower cleaning door are installed and fixed on the front side wall of the sandblasting box by screws, the upper cleaning door is adapted to the upper cleaning port, and the lower cleaning door is adapted to the lower cleaning port.

[0025] By adopting the above technical solution, the design of the upper cleaning door and upper cleaning port is to facilitate the removal of qualified and usable shot peening abrasive, and the design of the lower cleaning door and lower cleaning port is to facilitate the removal of broken shot peening abrasive and rust residue.

[0026] This application includes at least one of the following beneficial technical effects:

[0027] 1. This application utilizes a sandblasting mechanism to form an all-round sandblasting coverage from all sides and top and bottom of the steel, effectively eliminating blind spots in sandblasting rust removal, ensuring that all parts of the steel surface are subjected to uniform impact from shot blasting abrasive, and greatly improving the consistency of rust removal.

[0028] 2. This application utilizes a steel conveying mechanism, which is suitable for the continuous and stable conveying of steel of different widths, realizing continuous rust removal operations, significantly improving processing efficiency, and is especially suitable for rust removal processing of batch steel.

[0029] 3. This application utilizes a soft curtain design to effectively block abrasive splashes and dust from spreading out of the blasting box, reducing pollution to the surrounding environment.

[0030] 4. This application utilizes an arc-shaped screen to screen the used shot peening abrasive, so that qualified and usable shot peening abrasive remains above the arc-shaped screen, while broken shot peening abrasive and rust residue impurities pass through the screen holes on the arc-shaped screen and remain on the bottom inner wall of the sandblasting box, thereby facilitating the subsequent collection and reuse of shot peening abrasive and reducing shot peening abrasive waste. Attached Figure Description

[0031] Figure 1 This is a front-view stereoscopic structural diagram of this embodiment.

[0032] Figure 2 This is a front view sectional three-dimensional structural schematic diagram of this embodiment.

[0033] Figure 3 This is a three-dimensional structural diagram of the sandblasting mechanism and the steel conveying mechanism.

[0034] Figure 4 This is a three-dimensional structural diagram of the sandblasting mechanism.

[0035] Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the sandblasting mechanism.

[0036] Figure 6 This is a three-dimensional structural diagram of the steel conveying mechanism.

[0037] In the diagram: 1. Base; 2. Sandblasting box; 3. Sandblasting mechanism; 31. Shot blasting container; 32. Gravel pump; 33. Suction pipe; 34. Discharge pipe; 35. Discharge cylinder; 36. Conveying pipe; 37. Hanging rod; 38. U-shaped pipe; 39. Trumpet-shaped nozzle; 310. Booster air pump; 311. Air supply pipe; 4. Steel conveying mechanism; 41. Hydraulic cylinder; 42. Horizontal beam; 43. U-shaped plate one; 44. U-shaped plate two; 45. Rotating shaft; 46. I-shaped conveying roller; 47. L-shaped seat; 48. Motor; 5. Soft curtain for shielding; 6. Arc-shaped screen; 7. Upper cleaning door; 8. Lower cleaning door. Detailed Implementation

[0038] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0039] See Figures 1-6 This application provides a sandblasting machine for steel rust removal, including a base 1. A sandblasting box 2 is fixedly installed on the top of the base 1. The sandblasting box 2 is equipped with a sandblasting mechanism 3 and a steel conveying mechanism 4. The sandblasting mechanism 3 includes a shot blasting container 31, a sand pump 32, a suction pipe 33, a discharge pipe 34, a discharge cylinder 35, a conveying pipe 36, a boom 37, a U-shaped pipe 38, multiple trumpet-shaped nozzles 39, a booster air pump 310, and an air supply pipe 311. The shot blasting container 31 and the booster air pump 310 are both fixedly installed on the top of the sandblasting box 2. The gravel pump 32 is fixedly installed on the right outer wall of the shot peening container 31. One end of the suction pipe 33 is fixedly connected to the suction end of the gravel pump 32, and the other end of the suction pipe 33 is fixedly connected to the shot peening container 31. One end of the discharge pipe 34 is fixedly connected to the discharge end of the gravel pump 32. The discharge cylinder 35 is fixedly installed on the top of the sandblasting box 2, and the bottom of the discharge cylinder 35 extends into the sandblasting box 2. The end of the discharge pipe 34 away from the gravel pump 32 extends into the discharge cylinder 35. The conveying pipe 36 is fixedly connected to the bottom of the discharge cylinder 35. The lifting rod 37 is fixedly installed on the bottom of the discharge cylinder 35. The top inner wall of the sandblasting box 2 is fixedly installed. The U-shaped pipe 38 is fixedly installed at the bottom end of the hanger 37. The bottom end of the conveying pipe 36 is fixedly connected to the U-shaped pipe 38. Multiple trumpet-shaped nozzles 39 are fixedly installed on the inner wall of the U-shaped pipe 38 and are evenly distributed. All the trumpet-shaped nozzles 39 are connected to the U-shaped pipe 38. One end of the air supply pipe 311 is fixedly connected to the air outlet of the booster air pump 310. The other end of the air supply pipe 311 extends into the discharge cylinder 35. Multiple evenly distributed trumpet-shaped nozzles 39 are designed. It can form an all-round sandblasting coverage from all sides and top and bottom of the steel, effectively eliminating the sandblasting blind spots of traditional sandblasting machines, ensuring that all parts of the steel surface are subjected to uniform impact of shot blasting abrasive, greatly improving the consistency of rust removal. Under the synergistic action of the booster air pump 310 and the gravel pump 32, the shot blasting abrasive can be driven by the high-pressure airflow to be ejected at high speed from multiple trumpet-shaped nozzles 39. Combined with the continuous and stable conveying of steel by the steel conveying mechanism 4, continuous rust removal operation is realized, significantly improving the processing efficiency, and is especially suitable for batch steel rust removal processing.

[0040] In this embodiment, the end of the discharge pipe 34 located inside the discharge cylinder 35 is lower than the end of the air supply pipe 311 located inside the discharge cylinder 35, which can ensure that all the airflow discharged from the air supply pipe 311 acts on the shot peening abrasive discharged from the discharge pipe 34, ensuring that the shot peening abrasive is sprayed out at high speed and stably.

[0041] In this embodiment, a feeding port is provided on the top of the shot peening container 31 to facilitate the addition of shot peening abrasive into the shot peening container 31.

[0042] In this embodiment, the steel conveying mechanism 4 includes two hydraulic cylinders 41, two horizontal beams 42, two U-shaped plates 43, two U-shaped plates 44, four rotating shafts 45, four I-shaped conveying rollers 46, four L-shaped seats 47, and four motors 48. The two hydraulic cylinders 41 are respectively fixedly installed on the left and right outer walls of the sandblasting box 2, with the output shaft ends of both hydraulic cylinders 41 extending into the sandblasting box 2. The two horizontal beams 42 are respectively fixedly installed on the output shaft ends of the corresponding hydraulic cylinders 41. The two U-shaped plates 43 are respectively fixedly installed at the front ends of the corresponding horizontal beams 42, and the two U-shaped plates 44 are respectively fixedly installed at the rear ends of the corresponding horizontal beams 42. A U-shaped pipe 38 is located between the U-shaped plates 43 and 44. The four rotating shafts are respectively rotatably installed on the two U-shaped plates 43 and 44. The four I-shaped conveying rollers 46 are respectively fixedly sleeved on the corresponding rotating shafts 45. The four L-shaped seats 47 are respectively fixedly installed on the two U-shaped plates 43 and 44. At the bottom of section 4, four motors 48 are fixedly mounted on corresponding L-shaped seats 47. The output shafts of the four motors 48 are fixedly connected to the bottom ends of corresponding rotating shafts 45. Utilizing the telescopic feature of the two hydraulic cylinders 41, the distance between the two horizontal beams 42 can be adjusted, thus making it suitable for horizontal linear conveying of steel of different widths. The four motors 48 can drive the corresponding rotating shafts 45 to rotate, thereby causing the four I-shaped conveying rollers 46 to rotate simultaneously. Under the synergistic action of the four I-shaped conveying rollers 46, the steel can be stably and continuously conveyed horizontally in a straight line. It should be noted that the four motors 48 have the same model and speed setting, and the two motors 48 at the bottom of the two U-shaped plates 1 43 rotate in opposite directions, as do the two motors 48 at the bottom of the two U-shaped plates 2 44. This ensures that the motors 48 at both ends of the horizontal beam 42 on the left rotate in the same direction, and the motors 48 at both ends of the horizontal beam 42 on the right rotate in the same direction, thereby enabling stable horizontal linear conveying of the steel.

[0043] In this embodiment, the outer surfaces of the four I-shaped conveying rollers 46 are all provided with anti-slip textures. The anti-slip texture design can enhance the friction between the I-shaped conveying rollers 46 and the steel, avoid slippage during the conveying process, and ensure stable movement of the steel.

[0044] In this embodiment, a feed inlet is provided on the front side wall of the sandblasting box 2, and a discharge outlet is provided on the rear side wall of the sandblasting box 2. The design of the feed inlet and discharge outlet facilitates the entry and exit of steel into and out of the sandblasting box 2. Shielding soft curtains 5 are fixedly installed on both the front and rear side walls of the sandblasting box 2. The two shielding soft curtains 5 are adapted to the feed inlet and discharge outlet respectively. The design of the shielding soft curtains 5 can effectively block the abrasive splash and dust from spreading out of the sandblasting box 2, reducing pollution to the surrounding environment. The shielding soft curtains 5 are made of soft transparent plastic.

[0045] In this embodiment, an arc-shaped screen 6 is fixedly installed inside the sandblasting box 2 below the U-shaped pipe 38. The arc-shaped screen 6 has a structure that convexes upward from both sides to the middle. The design of the arc-shaped screen 6 can screen the used shot peening abrasive, so that qualified and usable shot peening abrasive is stored above the arc-shaped screen 6. Broken shot peening abrasive and rust impurities are stored on the bottom inner wall of the sandblasting box 2 through the screen holes on the arc-shaped screen 6, which facilitates the subsequent collection and reuse of shot peening abrasive and reduces the waste of shot peening abrasive.

[0046] In this embodiment, an upper cleaning port and a lower cleaning port are provided on the front side wall of the sandblasting box 2. The upper cleaning port is located above the arc-shaped screen 6, and the lower cleaning port is located below the arc-shaped screen 6. An upper cleaning door 7 and a lower cleaning door 8 are fixed to the front side wall of the sandblasting box 2 by screws. The upper cleaning door 7 is adapted to the upper cleaning port, and the lower cleaning door 8 is adapted to the lower cleaning port. The design of the upper cleaning door 7 and the upper cleaning port is to facilitate the removal of qualified and usable shot peening abrasive. The design of the lower cleaning door 8 and the lower cleaning port is to facilitate the removal of broken shot peening abrasive and rust residue.

[0047] In this embodiment, it should be noted that the gravel pump 32, the booster air pump 310, the hydraulic cylinder 41, and the motor 48 are all commercially available. Their wiring connection methods and control methods are mature technologies in the field and have been fully disclosed, so they will not be described in detail here. Furthermore, the horizontal beam 42, U-shaped plate 1 43, U-shaped plate 2 44, rotating shaft 45, I-shaped conveying roller 46, and L-shaped seat 47 in the steel conveying mechanism 4 are all made of stainless steel, which has the advantages of being sturdy and not easily deformed. Shot blasting splashes on its surface are not easily damaged. The outer surface of the motor 48 is provided with a breathable protective sleeve, so shot blasting splashes on the surface of the motor 48 are not easily damaged. Thus, the steel conveying mechanism 4 has a long-lasting and durable function and can be used stably.

[0048] With the above structure, when using the steel rust removal sandblasting machine provided in this application, first pour an appropriate amount of shot blasting abrasive into the shot blasting container 31, then put one end of the steel into the feed port on the front side wall of the sandblasting box 2, control the extension and operation of the two hydraulic cylinders 41, so that the two horizontal beams 42 move closer to each other, and the U-shaped plates 43 and 44 on the horizontal beams 42 and the motors 48 move accordingly. When the two I-shaped conveying rollers 46 on the two U-shaped plates 43 respectively come into contact with the two sides of the steel, the operation of the two hydraulic cylinders 41 is stopped, and then the operation of the four motors 48 is controlled. The four motors 48 drive the corresponding rotating shafts 45 to rotate, so that the four I-shaped conveying rollers 46 rotate simultaneously, among which the two I-shaped conveying rollers 46 located at the front rotate relatively synchronously. The two I-shaped conveyor rollers 46 located at the rear also rotate synchronously. Under the synergistic effect of the four I-shaped conveyor rollers 46, the steel can be stably conveyed horizontally in a straight line. The steel continuously enters the sandblasting box 2 through the feed port and exits the sandblasting box 2 through the discharge port, achieving a stable conveying effect. Furthermore, the distance between the two horizontal beams 42 can be adjusted by using two hydraulic cylinders 41, which is suitable for horizontal straight conveying of steel of different widths, so as to facilitate rust removal processing of steel of different widths. During the conveying process, since the U-shaped pipe 38 is located between the U-shaped plate 1 43 and the U-shaped plate 2 44, the steel can pass through the sandblasting area formed between multiple trumpet-shaped nozzles 39 during the conveying process.

[0049] During the continuous and stable conveying of steel, the gravel pump 32 and the booster air pump 310 are started and run simultaneously. When the gravel pump 32 is working, the shot peening abrasive in the shot peening container 31 is extracted through the suction pipe 33 and conveyed to the discharge cylinder 35 through the discharge pipe 34. At the same time, the high-pressure airflow generated by the booster air pump 310 is sent into the discharge cylinder 35 through the air supply pipe 311. Since the end of the discharge pipe 34 located in the discharge cylinder 35 is lower than the end of the air supply pipe 311 located in the discharge cylinder 35, the high-pressure airflow can act entirely on the discharged shot peening abrasive, so that the abrasive forms a high-speed gas-solid two-phase flow under the drive of the high-pressure airflow. Subsequently, the mixed shot peening abrasive enters the U-shaped pipe 38 through the conveying pipe 36, and is then sprayed out at high speed through multiple evenly distributed trumpet-shaped nozzles 39, so as to achieve all-round impact from all sides and the top and bottom directions of the steel, and achieve comprehensive rust removal treatment of the steel.

[0050] After being sprayed, the shot blasting abrasive and rust residue fall onto the arc-shaped screen 6. The qualified abrasive, due to its larger particle size, remains above the arc-shaped screen 6 and can be removed from the upper cleaning port through the upper cleaning door 7 for recycling. The broken abrasive and rust residue fall through the screen holes of the arc-shaped screen 6 into the bottom of the sandblasting box 2 and can be removed from the lower cleaning port through the lower cleaning door 8.

Claims

1. A sandblasting machine for rust removal from steel, characterized in that, The machine includes a base (1), on which a sandblasting box (2) is fixedly installed. The sandblasting box (2) is equipped with a sandblasting mechanism (3) and a steel conveying mechanism (4). The sandblasting mechanism (3) includes a shot blasting container (31), a gravel pump (32), a suction pipe (33), a discharge pipe (34), a discharge cylinder (35), a conveying pipe (36), a boom (37), a U-shaped pipe (38), multiple trumpet-shaped nozzles (39), a booster air pump (310), and an air delivery pipe (31). 1) The shot peening container (31) and the booster air pump (310) are both fixedly installed on the top of the sandblasting box (2). The gravel pump (32) is fixedly installed on the right outer wall of the shot peening container (31). One end of the suction pipe (33) is fixedly connected to the suction end of the gravel pump (32), and the other end of the suction pipe (33) is fixedly connected to the shot peening container (31). One end of the discharge pipe (34) is fixedly connected to the discharge end of the gravel pump (32). The discharge cylinder (35) is fixedly installed on the top of the sandblasting box (2), and the bottom of the discharge cylinder (35) extends into the sandblasting box (2). The end of the discharge pipe (34) away from the gravel pump (32) extends into the discharge cylinder (35). The conveying pipe (36) is fixedly connected to the bottom of the discharge cylinder (35). The hanger (37) is fixedly installed on the top inner wall of the sandblasting box (2). The U-shaped pipe (38) is fixedly installed on the hanger (37). At the bottom end, the bottom end of the conveying pipe (36) is fixedly connected to the U-shaped pipe (38), and a plurality of trumpet-shaped nozzles (39) are fixedly installed on the inner wall of the U-shaped pipe (38) and are evenly distributed, and a plurality of trumpet-shaped nozzles (39) are connected to the U-shaped pipe (38). One end of the air conveying pipe (311) is fixedly connected to the air outlet of the booster air pump (310), and the other end of the air conveying pipe (311) extends into the discharge cylinder (35).

2. The sandblasting machine for rust removal of steel according to claim 1, characterized in that: The end of the discharge pipe (34) located inside the discharge cylinder (35) is lower than the end of the gas supply pipe (311) located inside the discharge cylinder (35).

3. The sandblasting machine for rust removal of steel according to claim 1, characterized in that: The top of the shot peening container (31) is provided with a feeding port.

4. The sandblasting machine for rust removal of steel according to claim 1, characterized in that: The steel conveying mechanism (4) includes two hydraulic cylinders (41), two horizontal beams (42), two U-shaped plates (43), two U-shaped plates (44), four rotating shafts (45), four I-shaped conveying rollers (46), four L-shaped seats (47), and four motors (48). The two hydraulic cylinders (41) are respectively fixedly installed on the left and right outer walls of the sandblasting box (2). The output shaft ends of the two hydraulic cylinders (41) extend into the sandblasting box (2). The two horizontal beams (42) are respectively fixedly installed on the output shaft ends of the corresponding hydraulic cylinders (41). The two U-shaped plates (43) are respectively fixedly installed on the corresponding horizontal beams. (42) At the front end, two U-shaped plates (44) are fixedly installed at the rear end of the corresponding horizontal beam (42), four rotating shafts are rotatably installed on two U-shaped plates (43) and two U-shaped plates (44), four I-shaped conveying rollers (46) are fixedly sleeved on the corresponding rotating shafts (45), four L-shaped seats (47) are fixedly installed at the bottom of two U-shaped plates (43) and two U-shaped plates (44), four motors (48) are fixedly installed on the corresponding L-shaped seats (47), and the output shaft ends of the four motors (48) are fixedly connected to the bottom end of the corresponding rotating shafts (45).

5. The sandblasting machine for rust removal of steel according to claim 4, characterized in that: The outer surfaces of the four I-shaped conveyor rollers (46) are all provided with anti-slip textures.

6. The sandblasting machine for rust removal of steel according to claim 4, characterized in that: The U-shaped pipe (38) is located between the first U-shaped plate (43) and the second U-shaped plate (44).

7. The sandblasting machine for rust removal of steel according to claim 1, characterized in that: The front side wall of the sandblasting box (2) is provided with a feed inlet, and the rear side wall of the sandblasting box (2) is provided with a discharge outlet.

8. The sandblasting machine for rust removal of steel according to claim 7, characterized in that: The front and rear side walls of the sandblasting box (2) are fixedly installed with shielding curtains (5), and the two shielding curtains (5) are respectively adapted to the inlet and outlet.

9. The sandblasting machine for rust removal of steel according to claim 1, characterized in that: The sandblasting box (2) is fixedly installed with an arc-shaped screen (6) located below the U-shaped pipe (38). The arc-shaped screen (6) has a structure that bulges upward from both sides to the middle.

10. The sandblasting machine for rust removal of steel according to claim 9, characterized in that: The front side wall of the sandblasting box (2) is provided with an upper cleaning port and a lower cleaning port. The upper cleaning port is located above the arc-shaped screen (6), and the lower cleaning port is located below the arc-shaped screen (6). The front side wall of the sandblasting box (2) is fixed with an upper cleaning door (7) and a lower cleaning door (8) by screws. The upper cleaning door (7) is adapted to the upper cleaning port, and the lower cleaning door (8) is adapted to the lower cleaning port.

Images