A rust removal device for prestressed steel strand production

Abstract

The present application belongs to the technical field of rust removal device, and particularly relates to a rust removal device for prestressed steel strand production, which comprises a bottom plate, a first rust removal box and a second rust removal box fixedly connected to the upper side wall of the bottom plate, a controller fixedly connected to the side wall of the second rust removal box, feed pipes fixedly communicated with the left and right sides of the first rust removal box and the second rust removal box, and box doors hingedly connected to the front sides of the first rust removal box and the second rust removal box. When the rust removal device is used to remove rust from the prestressed steel strand, multi-stage rust removal can be performed, so that the rust inside the surface gap and groove of the steel strand can be completely cleaned, and the problem that the residual rust intensifies the corrosion inside the steel wire and affects the service life of the prestressed steel strand is avoided.

Description

Technical Field

[0001] This invention belongs to the technical field of rust removal devices, and in particular relates to a rust removal device for the production of prestressed steel strands. Background Technology

[0002] Prestressed steel strand is a high-strength steel product widely used in construction, bridges, water conservancy, and other engineering fields, primarily to enhance the load-bearing capacity and crack resistance of concrete structures. It improves the overall stability and durability of the structure by pre-applying stress to counteract the tensile stress generated in the concrete under load. Rust removal is required during the production of prestressed steel strand; for example, a rust removal device for the production of prestressed steel strand for cross-sea bridges is proposed in patent publication number CN213225607U.

[0003] When existing rust removal equipment is used to remove rust from prestressed steel strands, the steel strands have a twisted structure with gaps and grooves between the wires. Grinding tools cannot penetrate these areas, resulting in rust and oxide scale residue in the gaps. The residual rust will continue to develop, aggravating the corrosion of the internal steel wires and reducing their adhesion to concrete.

[0004] To address this issue, a rust removal device for prestressed steel strand production is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a rust removal device for the production of prestressed steel strands.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rust removal device for prestressed steel strand production, comprising a base plate, a first rust removal box and a second rust removal box fixedly connected to the upper side wall of the base plate, a controller fixedly connected to the side wall of the second rust removal box, feed pipes fixedly connected to the left and right sides of both the first and second rust removal boxes, and a door hinged to the front of both the first and second rust removal boxes, further comprising:

[0007] The coarse rust removal component is installed in the first rust removal box via an annular slide rail assembly and is used for the initial rust removal operation of the steel strand.

[0008] The fine rust removal component is installed in the second rust removal box via an annular slide rail assembly and is used for fine rust removal of steel strands;

[0009] The dust removal component is installed on the upper side wall of the second rust removal box and is used to adsorb the dust generated during the rust removal operation.

[0010] Preferably, both of the annular slide rail assemblies include a mounting cylinder, and the inner wall of the mounting cylinder is rotatably connected to a rotating cylinder via a bearing. The two mounting cylinders are respectively mounted on the inner walls of the first rust removal box and the second rust removal box via brackets. The upper inner walls of the first rust removal box and the second rust removal box are fixedly connected to a track motor via brackets. The output end of the track motor is connected to the rotating cylinder via a gear ring transmission mechanism.

[0011] Preferably, the coarse rust removal assembly includes two horizontal plates fixedly connected to the inner wall of the right rotating drum. A first electric push rod is fixedly connected to the side wall of each of the two horizontal plates on opposite sides. The moving end of each first electric push rod passes through the horizontal plate and is fixedly connected to an electric brush roller.

[0012] Preferably, the fine rust removal assembly includes a mounting plate connected to an annular slide rail assembly. A drive motor is fixedly connected to the side wall of the mounting plate, and a mounting cover is fixedly connected to the side wall of the mounting plate away from the drive motor. A guide sleeve is fixedly connected to the side wall of the mounting cover. A vibrating rod is slidably inserted into the guide sleeve. The vibrating rod has an inverted L-shaped structure. A drive frame is fixedly connected to one end of the vibrating rod located inside the mounting cover. The output end of the drive motor passes through the mounting plate and is fixedly connected to a rotating plate. A drive shaft inserted into the drive frame is fixedly connected to the side wall of the rotating plate. The second rust removal box has two rust removal rings inside. The two rust removal rings are connected by multiple brackets. Brush bristles adapted to steel strands are fixedly connected to the inner walls of the two rust removal rings. The end of the vibrating rod away from the drive motor is connected to one of the rust removal rings, and a positioning assembly is connected to the side wall of the other rust removal ring.

[0013] Preferably, the positioning component includes a positioning ring, which is connected to another rust-removing ring via a bracket. A shaping sleeve matching the steel strand is fixedly connected to the inner wall of the positioning ring, and a pressure plate is fixedly connected to the outer wall of the shaping sleeve. Two pressure sensors are fixedly connected to the inner wall of the positioning ring via a bracket, and the pressure plate is located between the two pressure sensors. Both pressure sensors are electrically connected to the controller.

[0014] Preferably, the dust removal assembly includes a dust removal box fixedly connected to the upper side wall of the second rust removal box. A suction pipe is fixedly connected to the left side wall of the dust removal box. The lower end of the suction pipe passes through the second rust removal box and is fixedly connected to a first suction ring. A dust removal pipe is fixedly connected to the right side wall of the dust removal box. The end of the dust removal pipe away from the dust removal box is located inside the first rust removal box and is fixedly connected to a second suction ring. Both the first and second suction rings are hollow structures with multiple suction holes on their inner walls. A suction pump is fixedly connected to the right side wall of the dust removal box, and the air inlet of the suction pump is connected to the dust removal box.

[0015] Preferably, the air outlet of the dust pump passes through the second rust removal box and is fixedly connected to a hose. The lower end of the hose is fixedly connected to a blowing ring. Both rust removal rings are rotatably connected to the inner wall of the blowing ring via bearings. The air outlet of the dust pump is equipped with an air pressure sensor, which is electrically connected to a controller. A guide frame is fixedly connected to the lower inner wall of the second rust removal box. A guide ring is slidably fitted on the outside of the guide frame, and the guide ring is connected to the blowing ring via a positioning pin.

[0016] Preferably, the outer walls of the two feed pipes are fitted with mounting sleeves by bolts, and the two mounting sleeves are fixedly connected by the same telescopic pipe.

[0017] Compared with existing technologies, the advantages of a rust removal device for prestressed steel strand production are:

[0018] 1. By using coarse and fine rust removal components, multi-stage rust removal can be performed when removing rust from prestressed steel strands. This ensures that rust in the gaps and grooves on the surface of the steel strands is cleaned, preventing residual rust from aggravating internal corrosion of the steel wires and affecting the service life of the prestressed steel strands.

[0019] 2. Through the setting of fine rust removal components and positioning components, when the prestressed steel strand moves inside the second rust removal box, the brush bristles can always be adapted to the shape of the steel strand. The short brush bristles are used to clean the rust on the outer surface of the steel strand, and the long brush bristles are used to clean the rust in the gaps and grooves on the surface of the steel strand.

[0020] 3. The dust removal components can automatically adsorb the dust generated during the rust removal process of prestressed steel strands, preventing the dust from being inhaled by the operators and affecting their health. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a rust removal device for the production of prestressed steel strands provided by the present invention;

[0022] Figure 2 This is a cross-sectional view of the first rust removal box in a rust removal device for prestressed steel strand production provided by the present invention;

[0023] Figure 3 This is a cross-sectional view of the second rust removal box in a rust removal device for prestressed steel strand production provided by the present invention;

[0024] Figure 4 This is a schematic diagram showing the connection relationship between the mounting cylinder and the rotating cylinder in a rust removal device for prestressed steel strand production provided by the present invention;

[0025] Figure 5This is a schematic diagram of the fine rust removal component in a rust removal device for prestressed steel strand production provided by the present invention;

[0026] Figure 6 This is a schematic diagram of the shape and structure of the drive frame in a rust removal device for prestressed steel strand production provided by the present invention;

[0027] Figure 7 This is a schematic diagram showing the connection relationship between the rust removal ring and the air blowing ring in a rust removal device for prestressed steel strand production provided by the present invention;

[0028] Figure 8 This is a left view of the rust removal ring in a rust removal device for prestressed steel strand production provided by the present invention;

[0029] Figure 9 This is a schematic diagram of the positioning component in a rust removal device for prestressed steel strand production provided by the present invention.

[0030] In the diagram: 1. Base plate, 2. First rust removal box, 3. Second rust removal box, 4. Controller, 5. Feed pipe, 6. Circular slide rail assembly, 61. Mounting cylinder, 62. Rotary cylinder, 7. Track motor, 8. Coarse rust removal assembly, 81. Horizontal plate, 82. First electric push rod, 9. Electric brush roller, 10. Fine rust removal assembly, 101. Mounting plate, 102. Drive motor, 11. Mounting cover, 12. Guide sleeve, 13. Vibration rod, 14. Drive frame, 15. Rotary plate, 16. Drive shaft, 17. Rust removal ring, 18. Brush bristles, 19. Positioning assembly, 191. Positioning ring, 192. Shaping sleeve, 20. Pressure plate, 21. Pressure sensor, 22. Dust removal assembly, 221. Dust removal box, 222. Suction pipe, 23. First suction ring, 24. Dust removal pipe, 25. Second suction ring, 26. Suction pump, 27. Hose, 28. Air blowing ring, 29. Air pressure sensor, 30. Guide frame, 31. Guide ring, 32. Mounting sleeve, 33. Telescopic tube, 34. Positioning pin. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] like Figures 1-9 As shown, a rust removal device for prestressed steel strand production includes a base plate 1. A first rust removal box 2 and a second rust removal box 3 are fixedly connected to the upper side wall of the base plate 1. A controller 4 is fixedly connected to the side wall of the second rust removal box 3. Feed pipes 5 are fixedly connected to the left and right sides of both the first rust removal box 2 and the second rust removal box 3. Mounting sleeves 32 are bolted to the outer walls of both feed pipes 5. The same telescopic pipe 33 is fixedly connected between the two mounting sleeves 32. Box doors are hinged to the front sides of both the first rust removal box 2 and the second rust removal box 3. The device also includes:

[0033] The coarse rust removal component 8 is installed in the first rust removal box 2 via the annular slide rail component 6 and is used for the initial rust removal operation of the steel strand. The coarse rust removal component 8 includes two horizontal plates 81 fixedly connected to the inner wall of the right rotating drum 62. The side walls of the two horizontal plates 81 on opposite sides are fixedly connected to a first electric push rod 82. The moving end of the first electric push rod 82 passes through the horizontal plate 81 and is fixedly connected to an electric brush roller 9. Through this component, the steel strand can be initially polished.

[0034] A fine rust removal component 10 is installed inside the second rust removal box 3 via an annular slide rail assembly 6 for fine rust removal of steel strands. The fine rust removal component 10 includes a mounting plate 101 connected to a rotating drum 62 in the annular slide rail assembly 6. A drive motor 102 is fixedly connected to the side wall of the mounting plate 101. A mounting cover 11 is fixedly connected to the side wall of the mounting plate 101 away from the drive motor 102. A guide sleeve 12 is fixedly connected to the side wall of the mounting cover 11. A vibrating rod 13 is slidably inserted into the guide sleeve 12. The vibrating rod 13 has an inverted L-shaped structure. A drive frame 14 is fixedly connected to one end of the vibrating rod 13 inside the mounting cover 11. The output end of the drive motor 102 passes through the mounting plate 101 and is fixedly connected to a rotating plate 15. A drive shaft 16 inserted into the drive frame 14 is fixedly connected to the side wall of the rotating plate 15. The second rust removal box 3 has two rust removal rings 17 inside, which are connected by multiple brackets (see reference). Figure 7 As shown), the inner walls of the two rust removal rings 17 are fixedly connected with brush bristles 18 that are compatible with the steel strand. The end of the vibrating rod 13 away from the drive motor 102 is connected to one of the rust removal rings 17. The side wall of the other rust removal ring 17 is connected to a positioning component 19. Through this component, the steel strand can be finely polished.

[0035] A dust removal assembly 22 is installed on the upper side wall of the second rust removal box 3 to adsorb dust generated during rust removal operations. The dust removal assembly 22 includes a dust removal box 221 fixedly connected to the upper side wall of the second rust removal box 3. A suction pipe 222 is fixedly connected to the left side wall of the dust removal box 221. The lower end of the suction pipe 222 passes through the second rust removal box 3 and is fixedly connected to a first suction ring 23. A dust removal pipe 24 is fixedly connected to the right side wall of the dust removal box 221. The end of the dust removal pipe 24 away from the dust removal box 221 is located inside the first rust removal box 2 and is fixedly connected to a second suction ring 25. Both the first suction ring 23 and the second suction ring 25 are hollow structures with multiple suction holes on their inner walls. A suction pump 26 is fixedly connected to the right side wall of the dust removal box 221. The air inlet of the suction pump 26 is connected to the dust removal box 221. Through this assembly, the dust generated during grinding can be adsorbed.

[0036] Both annular slide rail assemblies 6 include mounting cylinders 61. A rotating cylinder 62 is rotatably connected to the inner wall of the mounting cylinder 61 via bearings. The two mounting cylinders 61 are respectively mounted on the inner walls of the first rust removal box 2 and the second rust removal box 3 via brackets. A track motor 7 is fixedly connected to the upper inner wall of both the first rust removal box 2 and the second rust removal box 3 via brackets. The output end of the track motor 7 is connected to the rotating cylinder 62 via a gear ring transmission mechanism. This assembly can drive the coarse rust removal assembly 8 and the fine rust removal assembly 10 to rotate. The gear ring transmission mechanism can refer to conventional structures in the art.

[0037] The positioning component 19 includes a positioning ring 191, which is connected to another rust removal ring 17 via a bracket. A shaping sleeve 192 that matches the steel strand is fixedly connected to the inner wall of the positioning ring 191. A pressure plate 20 is fixedly connected to the outer wall of the shaping sleeve 192. Two pressure sensors 21 are fixedly connected to the inner wall of the positioning ring 191 via a bracket. The pressure plate 20 is located between the two pressure sensors 21. Both pressure sensors 21 are electrically connected to the controller 4. Through this component, the fine rust removal component 10 can change the grinding angle as the steel strand moves.

[0038] The air outlet of the vacuum pump 26 passes through the second rust removal box 3 and is fixedly connected to a hose 27. The lower end of the hose 27 is fixedly connected to a blowing ring 28. Both rust removal rings 17 are rotatably connected to the inner wall of the blowing ring 28 through bearings. The air outlet of the vacuum pump 26 is equipped with an air pressure sensor 29, which is electrically connected to the controller 4. A guide frame 30 is fixedly connected to the lower inner wall of the second rust removal box 3. A guide ring 31 is slidably fitted on the outside of the guide frame 30. The guide ring 31 is connected to the blowing ring 28 through a positioning pin 34, which can clean the dust attached to the surface of the brush bristles 18.

[0039] The operating principle of this invention is explained as follows: The operator opens the front doors of the first rust removal box 2 and the second rust removal box 3, and then passes the steel strand to be rusted through the feed pipes 5 on both sides of the first rust removal box 2, allowing the steel strand to pass through the first rust removal box 2. The steel strand will also pass through the second dust suction ring 25 and the annular slide rail assembly 6 inside the first rust removal box 2. Then, the operator passes the steel strand through the shaping sleeve 192 (to ensure the operator's safety, the end of the steel strand passes through the shaping sleeve 192). Then, the operator uses a clamp with a long rod to hold the steel strand and moves it to the left, allowing the steel strand to pass through the rust removal ring 17, the first dust suction ring 23, the annular slide rail assembly 6, and other components inside the second rust removal box 3. It then extends through the feed pipe 5 on the left side of the second rust removal box 3 and is wound around the outer take-up roller. The shaping sleeve 192 is adapted to the size of the steel strand, and multiple protrusions on the inner wall of the shaping sleeve 192 insert into the gaps on the surface of the steel strand. Because the gaps on the surface of the steel strand have a threaded structure, the operator... During the process of pulling the steel strand through the second rust removal box 3, the shaping sleeve 192 will rotate under the action of the thread gap. The shaping sleeve 192 will drive the pressure plate 20 to squeeze the pressure sensor 21 on one side. The pressure sensor 21 on this side will control the track motor 7 inside the second rust removal box 3 to work through the controller 4. The track motor 7 controls the rotation of the rotating drum 62 through the gear ring transmission mechanism (the gear ring transmission mechanism includes a transmission gear and a transmission ring, the transmission gear is connected to the output end of the track motor 7, and the transmission ring is connected to one end of the rotating drum 62). The rotating drum 62 will drive the rust removal ring 17 to rotate through the mounting plate 101, mounting cover 11, guide sleeve 12, and vibration rod 13. The rust removal ring 17 drives the shaping sleeve 192 to rotate together through the bracket. By changing the length of the bracket between the rust removal ring 17 and the positioning ring 191, the rust removal ring 17 is positioned in a suitable position on the steel strand, so that the bristles 18 of different lengths can be controlled to fit the outer surface of the steel strand and the gaps on the surface of the steel strand respectively.

[0040] Once the end of the steel strand is wound around the surface of the external take-up roller, the operator can close the box door and send an electrical signal to the controller 4 via an external remote control device. The controller 4 will then control the external take-up roller to work, using it to take up the steel strand. At the same time, the controller 4 controls the two horizontal plates 81 to rotate along the axial direction of the steel strand via the right-side annular slide rail assembly 6 (the operator needs to control the first electric push rods 82 on both sides according to the size of the steel strand, which will drive the electric brush rollers 9 to move closer to the steel strand, and make the steel wires on the surface of the electric brush rollers 9 contact the steel strand). Simultaneously, the controller 4 will control the two electric brush rollers 9 to rotate, using them to perform initial polishing of the rust on the surface of the steel strand.

[0041] After the initial grinding, the steel strand enters the second rust removal box 3. Following the principle described above, the rust removal ring 17 drives the brush bristles 18 to rotate along the steel strand, so that the short brush bristles 18 contact the protrusions on the surface of the steel strand, and the long brush bristles 18 contact the gaps in the steel strand. The controller 4 controls the drive motor 102 to work, and the drive motor 102 drives the drive shaft 16 to rotate through the rotating plate 15. During the rotation, the drive shaft 16 pulls the drive frame 14 back and forth. The drive frame 14 drives the two rust removal rings 17 and multiple brush bristles 18 to move back and forth quickly on the surface of the steel strand (the reciprocating movement distance is 0.5cm) through the vibration rod 13. The brush bristles 18 are used to perform secondary grinding on the steel strand, ensuring the rust removal effect of the steel strand.

[0042] During the rust removal process on the steel strand, the controller 4 activates the dust pump 26. The dust pump 26 extracts gas from the dust collection box 221, allowing external gas carrying dust to pass through the suction holes on the surfaces of the first suction ring 23 and the second suction ring 25 into the suction pipe 222 and the dust removal pipe 24. The dust then enters the dust collection box 221 through the suction pipe 222 and the dust removal pipe 24. The dust collection box 221 contains a filter element located at the air inlet of the dust pump 26 to filter impurities. The gas discharged from the dust pump 26 passes through a soft... The air is delivered to the air blowing ring 28 through the hose 27. The air blowing ring 28 is used to clean the dust adhering to the surface of the bristles 18. When the bristles 18 are severely worn, the resistance encountered by the air after being discharged from the hose 27 will decrease, and the air pressure inside the hose 27 will decrease. After the controller 4 detects the continuous decrease in air pressure at the air outlet of the vacuum pump 26 and inside the hose 27 through the air pressure sensor 29, the controller 4 will emit a "beep beep beep" prompt sound through the internal buzzer module to remind the operator to replace the severely worn bristles 18 in time.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rust removal device for prestressed steel strand production, comprising a base plate (1), wherein a first rust removal box (2) and a second rust removal box (3) are fixedly connected to the upper side wall of the base plate (1), a controller (4) is fixedly connected to the side wall of the second rust removal box (3), and feed pipes (5) are fixedly connected to the left and right sides of both the first rust removal box (2) and the second rust removal box (3), and a door is hinged to the front side of both the first rust removal box (2) and the second rust removal box (3), characterized in that, Also includes: The coarse rust removal assembly (8) is installed in the first rust removal box (2) via the annular slide rail assembly (6) for the initial rust removal operation of the steel strand; A fine rust removal assembly (10) is installed in the second rust removal box (3) via an annular slide rail assembly (6) for fine rust removal of steel strands. The fine rust removal assembly (10) includes a mounting plate (101) connected to the annular slide rail assembly (6). A drive motor (102) is fixedly connected to the side wall of the mounting plate (101). A mounting cover (11) is fixedly connected to the side wall of the mounting plate (101) away from the drive motor (102). A guide sleeve (12) is fixedly connected to the side wall of the mounting cover (11). A vibrating rod (13) is slidably inserted into the guide sleeve (12). The vibrating rod (13) has an inverted L-shaped structure and is located inside the mounting cover (11). One end of the drive frame (14) is fixedly connected to the drive motor (102). The output end of the drive motor (102) passes through the mounting plate (101) and is fixedly connected to the rotating plate (15). The side wall of the rotating plate (15) is fixedly connected to the drive shaft (16) inserted into the drive frame (14). The interior of the second rust removal box (3) is provided with two rust removal rings (17). The two rust removal rings (17) are connected by multiple brackets. The inner wall of the two rust removal rings (17) is fixedly connected to the bristles (18) adapted to the steel strand. The end of the vibrating rod (13) away from the drive motor (102) is connected to one of the rust removal rings (17). The side wall of the other rust removal ring (17) is connected to the positioning component (19). The dust removal component (22) is installed on the upper side wall of the second rust removal box (3) and is used to adsorb the dust generated during the rust removal operation.

2. The rust removal device for prestressed steel strand production according to claim 1, characterized in that, Both of the aforementioned annular slide rail assemblies (6) include mounting cylinders (61), and the inner wall of the mounting cylinders (61) is rotatably connected to a rotating cylinder (62) via bearings. The two mounting cylinders (61) are respectively mounted on the inner walls of the first rust removal box (2) and the second rust removal box (3) via brackets. The upper inner walls of the first rust removal box (2) and the second rust removal box (3) are fixedly connected to a track motor (7) via brackets. The output end of the track motor (7) is connected to the rotating cylinder (62) via a gear ring transmission mechanism.

3. The rust removal device for prestressed steel strand production according to claim 2, characterized in that, The coarse rust removal assembly (8) includes two horizontal plates (81) fixedly connected to the inner wall of the right rotating drum (62). The side walls of the two horizontal plates (81) on opposite sides are fixedly connected to a first electric push rod (82). The moving end of the first electric push rod (82) passes through the horizontal plate (81) and is fixedly connected to an electric brush roller (9).

4. The rust removal device for prestressed steel strand production according to claim 1, characterized in that, The positioning component (19) includes a positioning ring (191), which is connected to another rust removal ring (17) via a bracket. A shaping sleeve (192) matching the steel strand is fixedly connected to the inner wall of the positioning ring (191). A pressure plate (20) is fixedly connected to the outer wall of the shaping sleeve (192). Two pressure sensors (21) are fixedly connected to the inner wall of the positioning ring (191) via a bracket. The pressure plate (20) is located between the two pressure sensors (21). Both pressure sensors (21) are electrically connected to the controller (4).

5. A rust removal device for prestressed steel strand production according to claim 4, characterized in that, The dust removal assembly (22) includes a dust removal box (221) fixedly connected to the upper side wall of the second rust removal box (3). A dust suction pipe (222) is fixedly connected to the left side wall of the dust removal box (221). The lower end of the dust suction pipe (222) passes through the second rust removal box (3) and is fixedly connected to a first dust suction ring (23). A dust removal pipe (24) is fixedly connected to the right side wall of the dust removal box (221). The end of the dust suction pipe (24) away from the dust removal box (221) is located inside the first rust removal box (2) and is fixedly connected to a second dust suction ring (25). Both the first dust suction ring (23) and the second dust suction ring (25) are hollow structures, and multiple dust suction holes are opened on the inner wall. A dust suction pump (26) is fixedly connected to the right side wall of the dust removal box (221). The air inlet of the dust suction pump (26) is connected to the dust removal box (221).

6. A rust removal device for prestressed steel strand production according to claim 5, characterized in that, The air outlet of the dust pump (26) passes through the second rust removal box (3) and is fixedly connected to a hose (27). The lower end of the hose (27) is fixedly connected to a blowing ring (28). The two rust removal rings (17) are rotatably connected to the inner wall of the blowing ring (28) through a bearing. The air outlet of the dust pump (26) is provided with a pressure sensor (29). The pressure sensor (29) is electrically connected to the controller (4). The lower inner wall of the second rust removal box (3) is fixedly connected to a guide frame (30). A guide ring (31) is slidably sleeved on the outside of the guide frame (30). The guide ring (31) is connected to the blowing ring (28) through a positioning pin (34).

7. A rust removal device for prestressed steel strand production according to claim 1, characterized in that, The outer walls of the two feed pipes (5) are fitted with mounting sleeves (32) by bolts, and the two mounting sleeves (32) are fixedly connected by the same telescopic pipe (33).

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