Shot blasting system for corrosion prevention of steel pipe

Abstract

The invention discloses a shot blasting system for steel pipe anticorrosion, which relates to the technical field of steel pipe anticorrosion treatment and comprises an inner shot blasting device and an outer shot blasting device. The cleaning box has the beneficial effects that the cleaning box is internally divided into the shot blasting chamber and the sealing auxiliary chamber, and the falling curtain composed of the cloth strips is arranged between the shot blasting chamber and the sealing auxiliary chamber, so that the problem that an electric roller shutter door cannot prevent dust from scattering all around when a steel pipe enters the cleaning box is solved, dust drifting during shot blasting is prevented through the falling curtain, dust discharge is reduced, and the service life of the steel pipe is prolonged. In addition, a dust removal system is matched for dust removal to reduce influence on ambient air; by means of the mode that the inner impeller heads and the outer impeller heads conduct shot blasting treatment on the inner walls of the to-be-shot-blasted steel pipes upwards, the cantilever beam is adjusted to rotate, steel pipes of different sizes and diameters can be easily adapted, meanwhile, the outer impeller heads are arranged on the front side and the rear side of the lower portion of the shot blasting chamber, and it is guaranteed that the distance between the shot blasting treatment faces of the to-be-shot-blasted steel pipes of different pipe diameters and the outer impeller heads is small in change. Equipment or parts do not need to be replaced, and the use cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steel pipe anti-corrosion treatment, in particular to a shot blasting system for steel pipe anti-corrosion. Background Art

[0002] Steel pipes are widely used in many industrial fields, such as construction, oil, and natural gas. However, during use, steel pipes are affected by various environmental factors, which can lead to corrosion of their outer walls. In order to extend the service life of steel pipes, anti-corrosion treatment becomes particularly important.

[0003] Traditional anti-corrosion treatment methods mainly include coating and electroplating. The electroplating method is to deposit metal or alloy on the outer wall of the steel pipe through electrochemical reaction to improve its corrosion resistance. However, the electroplating method has problems such as environmental pollution and high energy consumption; the coating method is to achieve the purpose of anti-corrosion by coating the outer wall of the steel pipe with anti-corrosion coating. However, this method requires the steel pipe to be shot blasted to remove the surface rust layer before spraying; However, the existing shot blasting method has unsatisfactory dust removal effect during the shot blasting process, and the dust is large, which easily leads to turbid air in the surrounding environment of the processing area and affects the breathing health of workers. There are also some automatic cleaning equipment, which are unable to adapt to steel pipes of different sizes and diameters due to their poor adaptability, and are therefore greatly restricted in practical applications. Summary of the invention

[0004] The object of the present invention is to provide a shot blasting system for steel pipe corrosion protection in order to solve the above-mentioned problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A shot blasting system for steel pipe anti-corrosion, comprising an internal shot blasting device and an external shot blasting device, the external shot blasting device comprising a cleaning box and a track running through the cleaning box, the cleaning box and the track are both fixedly mounted on a ground foundation, a shot blasting chamber is arranged inside the cleaning box, the left and right sides of the shot blasting chamber are respectively arranged as sealed sub-chambers, an external shot blaster is fixedly mounted at the lower part of the shot blasting chamber, a vertical curtain is arranged between the sealed sub-chamber and the shot blasting chamber; a deep foundation pit is excavated on the ground foundation corresponding to the position below the cleaning box, a feeding net flush with the upper surface of the foundation is arranged above the deep foundation pit, a plurality of material receiving hoppers are installed below the feeding net, a transverse screw conveyor is sealedly connected to the lower end of the material receiving hopper, a longitudinal screw conveyor is sealedly connected to the discharging end of the transverse screw conveyor, a first hoist is sealedly connected to the discharging end of the longitudinal screw conveyor, and the first hoist is upper The first hoist is connected to the longitudinal screw conveyor through the upper end The rotary conveyor extends to the first shot-residue separator, and the shot outlet of the first shot-residue separator extends to the interior of the cleaning box through a pipeline and is sealedly connected to the external shot blasting device; electric rolling shutter doors are installed at both ends of the cleaning box, and a transport trolley for transporting the steel pipe to be shot blasted is provided on the track; the internal shot blasting device includes a supporting platform fixedly installed on a ground foundation, the supporting platform is arranged on the left side of the cleaning box, and suspension beams are penetrated through the left and right sides of the supporting platform, and a supporting shaft for supporting the rotation of the suspension beam is fixedly installed on the right side of the supporting platform corresponding to the bottom of the suspension beam, a hydraulic jack is installed on the upper left side of the supporting platform, the upper end of the hydraulic jack is rotatably connected to the supporting platform, and the lower end of the hydraulic jack is rotatably connected to the suspension beam, the right end of the suspension beam extends to the shot blasting room where a shot blasting box is fixedly installed, and an upward inner shot blasting device is fixedly installed in the shot blasting box.

[0006] Preferably, the curtain is composed of cloth strips.

[0007] Preferably: a supporting wheel frame for supporting the rolling of the steel pipe to be shot blasted is arranged on the upper surface of the transport trolley, and the supporting wheel frame comprises a rotatable V-shaped frame installed on the upper surface of the transport trolley and rolling wheels at both ends of the V-shaped frame.

[0008] Preferably: a platform is fixedly mounted on the upper surface of the cleaning box, the first pill-residue separator is mounted on the platform, and a ladder for easy climbing is fixedly mounted on the side of the platform.

[0009] Preferably: a dust removal system is fixedly installed on the top surface of the cleaning box corresponding to the position of the shot blasting chamber.

[0010] Preferably: a lower material bin is fixedly installed on the upper right part of the support platform, and a second elevator is arranged on one side of the lower material bin; a feeding conveyor is arranged on the upper part of the suspension beam, the left end of the feeding conveyor extends to the discharge port position at the lower end of the lower material bin, and the right end of the feeding conveyor extends to the feed port position of the internal shot blasting device; a return conveyor is arranged on the lower part of the suspension beam, the right end of the return conveyor extends to the bottom of the shot blasting box, and the left end of the return conveyor extends into the support platform, and a transfer mechanism is arranged in the support platform corresponding to the left end of the return conveyor and the feed port of the second elevator.

[0011] Preferably: the transfer mechanism includes a second pill-residue separator and a feeding screw conveyor driven by a feeding motor, the second pill-residue separator is fixedly installed on the support platform at a position below the left end of the return conveyor, the pill outlet of the second pill-residue separator is sealedly connected to the feeding screw conveyor through a pipe, and the discharge end of the feeding screw conveyor is arranged at the feed port position of the second elevator.

[0012] Preferably: a cable is hung on the right side of the support platform at a position corresponding to just above the support shaft and higher than the upper surface of the suspension beam, and both ends of the cable are respectively fixedly connected to the suspension beam.

[0013] Preferably, the shot blasting box is connected to the suspension beam by bolts, and a cushion block is provided between the shot blasting box and the suspension beam.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The inner and outer walls of the steel pipe to be shot blasted are shot blasted at the same time to improve the shot blasting efficiency; 2. By dividing the cleaning box into a shot blasting chamber and a sealed auxiliary chamber, a curtain made of cloth strips is set between the shot blasting chamber and the sealed auxiliary chamber to solve the problem that the electric rolling shutter door cannot block the dust from scattering when the steel pipe enters the cleaning box. The curtain blocks the dust from floating during shot blasting and reduces dust discharge. In addition, the dust removal system is used to remove dust and reduce the impact on the ambient air. 3. By adjusting the rotation of the suspension beam, the inner wall of the steel pipe to be shot blasted can be easily adapted to steel pipes of different sizes and diameters. At the same time, the outer shot blasting machine is arranged on the front and rear sides of the lower part of the shot blasting room to ensure that the distance between the shot blasting surface of the steel pipe to be shot blasted with different diameters and the outer shot blasting machine changes little, without the need to replace equipment or parts, thus reducing the cost of use; 4. The present invention has a compact structure, is easy to manufacture and maintain, and reduces manufacturing costs and difficulty of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 The present invention is a schematic diagram of the main structure of an external shot blasting device of a shot blasting system for steel pipe corrosion protection.

[0017] Figure 2 The present invention is a schematic diagram of the main structure of an inner shot blasting device of a shot blasting system for steel pipe corrosion protection.

[0018] Figure 3 It is a right view structural schematic diagram of a shot blasting system for steel pipe corrosion protection according to the present invention.

[0019] Figure 4 It is a partial structural schematic diagram of a shot blasting system for steel pipe corrosion protection according to the present invention.

[0020] The following are the descriptions of the reference numerals: 1. Sealed auxiliary chamber; 2. Dust removal system; 3. First shot-slag separator; 4. First elevator; 5. External shot blasting machine; 6. Platform; 7. Ladder; 8. Horizontal screw conveyor; 9. Electric rolling door; 10. Foundation; 11. Track; 12. Steel pipe to be shot blasted; 13. Transport trolley; 14. Receiving hopper; 15. Discharging net; 16. Support platform; 17. Suspension beam; 18. Support shaft; 19. Cable; 20. Hydraulic jack; 21. Second elevator; 22. Shot blasting box; 23. Internal shot blasting machine; 24. Feeding conveyor; 25. Returning conveyor; 26. Transfer mechanism; 261. Second shot-slag separator; 262. Feeding screw conveyor; 27. Longitudinal screw conveyor; 28. Discharging bin; 29. ​​Cleaning box. DETAILED DESCRIPTION

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] The present invention will be further described below in conjunction with the accompanying drawings: like Figure 1-Figure 4As shown, a shot blasting system for steel pipe anti-corrosion includes an internal shot blasting device and an external shot blasting device, the external shot blasting device includes a cleaning box 29 and a track 11 passing through the cleaning box 29, the cleaning box 29 and the track 11 are fixedly installed on the foundation 10, a shot blasting chamber is arranged inside the cleaning box 29, the left and right sides of the shot blasting chamber are respectively arranged as sealed sub-chambers 1, an external shot blasting machine 5 is fixedly installed in the lower part of the shot blasting chamber, and a vertical curtain is arranged between the sealed sub-chamber 1 and the shot blasting chamber; a deep foundation pit is excavated in the foundation 10 corresponding to the position below the cleaning box 29, a feeding net 15 flush with the upper surface of the foundation 10 is arranged above the deep foundation pit, and three receiving funnels 14 are installed below the feeding net 15, the lower end of the receiving funnel 14 is sealedly connected to a transverse screw conveyor 8, the discharging end of the transverse screw conveyor 8 is sealedly connected to a longitudinal screw conveyor 27, the discharging end of the longitudinal screw conveyor 27 is sealedly connected to a first hoist 4, and the upper end of the first hoist 4 extends to the first shot blasting machine through the longitudinal screw conveyor 27. Slag separator 3, the shot outlet of the first shot-slag separator 3 extends to the inside of the cleaning box 29 through a pipeline and is sealed and connected to the outer shot blasting machine 5; electric rolling shutter doors 9 are installed on both ends of the cleaning box 29, and a transport trolley 13 for transporting the steel pipe 12 to be shot blasted is provided on the track 11; the internal shot blasting device includes a supporting platform 16 fixedly installed on the foundation 10, the supporting platform 16 is arranged on the left side of the cleaning box 29, and a suspension beam 17 is passed through the left and right sides of the supporting platform 16. A supporting shaft 18 for supporting the rotation of the suspension beam 17 is fixedly installed on the right side of the supporting platform 16 corresponding to the bottom of the suspension beam 17, and a hydraulic jack 20 is installed on the upper left side of the supporting platform 16. The upper end of the hydraulic jack 20 is rotatably connected to the supporting platform 16, and the lower end of the hydraulic jack 20 is rotatably connected to the suspension beam 17. The right end of the suspension beam 17 extends to the shot blasting room, where a shot blasting box 22 is fixedly installed, and an upward inner shot blasting machine 23 is fixedly installed in the shot blasting box 22; the curtain is composed of cloth strips, which is highly soft and easy to block.

[0024] The upper surface of the transport trolley 13 is provided with a supporting wheel frame for supporting the rolling of the steel pipe 12 to be shot blasted. The supporting wheel frame includes a rotatable V-frame installed on the upper surface of the transport trolley 13 and rolling wheels at both ends of the V-frame, so as to support the steel pipe 12 to be shot blasted of different diameters.

[0025] A platform 6 is fixedly mounted on the upper surface of the cleaning box 29 , the first pill-slag separator 3 is mounted on the platform 6 , and a ladder 7 for easy climbing is fixedly mounted on the side of the platform 6 .

[0026] A dust removal system 2 is fixedly installed on the top surface of the cleaning box 29 corresponding to the position of the shot blasting chamber. The dust removal system 2 vacuums the inside of the cleaning box 29 during the shot blasting process. The dust removal system 2 filters the airflow drawn out from the shot blasting chamber in the form of bag dust removal.

[0027] A lower material bin 28 is fixedly installed on the upper right side of the support platform 16, and a second elevator 21 is arranged on one side of the lower material bin 28; a feeding conveyor 24 is arranged on the upper part of the suspension beam 17, and the left end of the feeding conveyor 24 extends to the discharge port position at the lower end of the lower material bin 28, and the right end of the feeding conveyor 24 extends to the feed port position of the inner shot blaster 23; a return conveyor 25 is arranged at the lower part of the suspension beam 17, and the right end of the return conveyor 25 extends to the bottom of the shot blasting box 22, and the left end of the return conveyor 25 extends into the support platform 16, and a transfer mechanism 26 is arranged in the support platform 16 corresponding to the left end of the return conveyor 25 and the feed port of the second elevator 21, and the transfer mechanism 26 is used to recycle materials for reuse, thereby saving material input.

[0028] The transfer mechanism 26 includes a second pill-residue separator 261 and a feeding screw conveyor 262 driven by a feeding motor. The second pill-residue separator 261 is fixedly installed on the support platform 16 at a position below the left end of the return conveyor 25. The pill outlet of the second pill-residue separator 261 is connected to the feeding screw conveyor 262 through a pipeline seal, and the discharge end of the feeding screw conveyor 262 is arranged at the feed port of the second elevator 21.

[0029] A cable 19 is hung on the right side of the support platform 16 at a position just above the support shaft 18 and higher than the upper surface of the suspension beam 17 , and both ends of the cable 19 are fixedly connected to the suspension beam 17 .

[0030] The shot blasting box 22 is connected to the suspension beam 17 by bolts, and a cushion block is arranged between the shot blasting box 22 and the suspension beam 17 to ensure that the left and right inner shot blasting wheels 23 in the shot blasting box 22 are level after the suspension beam 17 rotates, so that the left and right inner shot blasting wheels 23 are at the same distance from the internal shot blasting surface of the shot blasting steel pipe 12 to be shot blasted, avoiding the situation where the left and right inner shot blasting wheels 23 have different shot blasting degrees.

[0031] Working principle: When in use, the steel pipe 12 to be shot blasted is moved along the track 11 by the transport trolley 13. When the steel pipe 12 to be shot blasted is transported to the outside of the cleaning box 29 by the transport trolley 13, the electric shutter doors 9 at both ends of the cleaning box 29 rise, and the front end of the steel pipe 12 enters the sealed auxiliary chamber 1, and continues to move forward until the front end of the steel pipe 12 enters the shot blasting room, and the steel pipe 12 is sleeved on the outside of the shot blasting box 22 at the right end of the suspension beam 17, and the inner shot blaster 23 and the outer shot blaster 5 are started at the same time: Inner shot blasting machine 23: Start the feeding conveyor 24 to convey the steel shots dropped from the lower bin 28 into the inner shot blasting machine 23. The steel shots are thrown upward through the inner shot blasting machine 23 to perform shot blasting on the inner wall of the steel pipe 12 to be shot blasted. The used steel shots and debris are conveyed to the second shot slag separator 261 in the support platform 16 through the return conveyor 25. After the second shot slag separator 261 separates the shot slag, the steel shots are conveyed to the feed port of the second elevator 21 through the feeding screw conveyor 262. The steel shots are lifted by the second elevator 21 into the lower bin 28 for use. The debris and dust are separated by the shot slag separator and discharged; External shot blasting machine 5: The shot blasting machine sprays shots to blast the surface of the steel pipe. During the shot blasting process, the scattered shots and steel sand fall to the feeding net 15 at the bottom of the cleaning box 29 by gravity, and then fall into the receiving funnel 14. After being gathered by the transverse screw conveyor 8, they are sent to the first hoist 4 by the longitudinal screw conveyor 27. The shots are lifted to the top of the cleaning box 29 by the first hoist 4, and the shot-slag mixture is sent to the first shot-slag separator 3 for separation by the transverse screw conveyor 8. The separated shots are transported to the external shot blasting machine 5 through the pipeline for use, and the steel sand is separated and discharged by the shot-slag separator to realize the recycling of shots. The debris and dust are separated by the shot-slag separator and discharged; During the shot blasting process, the transport trolley 13 supports the steel pipe 12 to be shot blasted to move to the left and supports the steel pipe 12 to be shot blasted to rotate itself until the shot blasting is completed; when shot blasting steel pipes 12 to be shot blasted of different diameters, the suspension beam 17 can be supported to rotate by extending and retracting the hydraulic jack 20, thereby adjusting the height of the shot blasting box 22 to adapt to the use of steel pipes 12 to be shot blasted of different diameters.

[0032] The dust removal system 2, the first shot-residue separator 3, the first elevator 4, the external shot blasting machine 5, the transverse screw conveyor 8, the electric rolling door 9, the track 11, the transport trolley 13, the hydraulic jack 20, the second elevator 21, the internal shot blasting machine 23, the feeding conveyor 24, the return conveyor 25, the second shot-residue separator 261, the feeding screw conveyor 262, and the longitudinal screw conveyor 27 are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods, so they will not be described in detail here.

[0033] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A shot blasting system for steel pipe anti-corrosion, comprising an internal shot blasting device and an external shot blasting device, characterized in that: The external shot blasting device comprises a cleaning box (29) and a track (11) passing through the cleaning box (29); the cleaning box (29) and the track (11) are both fixedly mounted on a foundation (10); a shot blasting chamber is arranged inside the cleaning box (29); the left and right sides of the shot blasting chamber are respectively arranged as sealed auxiliary chambers (1); an external shot blasting device (5) is fixedly mounted in the lower part of the shot blasting chamber; a vertical curtain is arranged between the sealed auxiliary chamber (1) and the shot blasting chamber; a deep foundation pit is excavated on the foundation (10) at a position below the cleaning box (29); a vertical curtain is arranged above the deep foundation pit; A material discharge net (15) is provided which is flush with the upper surface of the foundation (10); a plurality of material receiving hoppers (14) are installed below the material discharge net (15); the lower end of the material receiving hopper (14) is sealedly connected to a transverse screw conveyor (8); the discharge end of the transverse screw conveyor (8) is sealedly connected to a longitudinal screw conveyor (27); the discharge end of the longitudinal screw conveyor (27) is sealedly connected to a first elevator (4); the upper end of the first elevator (4) extends to a first pill-residue separator (3) through the longitudinal screw conveyor (27); and the first pill-residue separator (3) is sealedly connected to the first pill-residue separator (3). The shot outlet of the separator (3) extends through a pipeline to the inside of the cleaning box (29) and is sealedly connected to the external shot blasting device (5); electric rolling shutter doors (9) are installed at both ends of the cleaning box (29); a transport trolley (13) for transporting the steel pipe (12) to be shot blasted is clamped on the track (11); the internal shot blasting device includes a support platform (16) fixedly installed on the foundation (10); the support platform (16) is arranged on the left side of the cleaning box (29); suspension beams (17) are penetrated from the inside of the support platform (16) on the left and right sides; the support platform A support shaft (18) is fixedly installed on the right side corresponding to the bottom of the suspension beam (17) for supporting the rotation of the suspension beam (17); a hydraulic jack (20) is installed on the upper left side of the support platform (16); the upper end of the hydraulic jack (20) is rotatably connected to the support platform (16); the lower end of the hydraulic jack (20) is rotatably connected to the suspension beam (17); the right end of the suspension beam (17) extends to the shot blasting room and a shot blasting box (22) is fixedly installed therein; an upward internal shot blasting device (23) is fixedly installed in the shot blasting box (22).

2. A shot blasting system for steel pipe anticorrosion according to claim 1, characterized in that: The vertical curtain is composed of cloth strips.

3. A shot blasting system for steel pipe anticorrosion according to claim 1, characterized in that: The upper surface of the transport trolley (13) is provided with a supporting wheel frame for supporting the rolling of the steel pipe (12) to be shot blasted, and the supporting wheel frame comprises a rotatable V-shaped frame mounted on the upper surface of the transport trolley (13) and rolling wheels at both ends of the V-shaped frame.

4. A shot blasting system for steel pipe anticorrosion according to claim 1, characterized in that: A platform (6) is fixedly mounted on the upper surface of the cleaning box (29), the first pill-residue separator (3) is mounted on the platform (6), and a ladder (7) for easy climbing is fixedly mounted on the side of the platform (6).

5. A shot blasting system for steel pipe anticorrosion according to claim 1, characterized in that: A dust removal system (2) is fixedly installed on the top surface of the cleaning box (29) at a position corresponding to the shot blasting chamber.

6. A shot blasting system for steel pipe anticorrosion according to claim 1, characterized in that: A material lowering bin (28) is fixedly mounted on the upper right side of the support platform (16), and a second elevator (21) is arranged on one side of the material lowering bin (28); a feeding conveyor (24) is arranged above the interior of the suspension beam (17), the left end of the feeding conveyor (24) extending to the discharge port position at the lower end of the material lowering bin (28), and the right end of the feeding conveyor (24) extending to the feed port position of the inner shot blasting device (23); a return material conveyor (25) is arranged below the interior of the suspension beam (17), the right end of the return material conveyor (25) extending to the bottom of the shot blasting box (22), the left end of the return material conveyor (25) extending into the support platform (16), and a transfer mechanism (26) is arranged in the support platform (16) between the left end of the return material conveyor (25) and the feed port of the second elevator (21).

7. A shot blasting system for steel pipe anticorrosion according to claim 6, characterized in that: The transfer mechanism (26) comprises a second pill-residue separator (261) and a feeding screw conveyor (262) driven by a feeding motor; the second pill-residue separator (261) is fixedly mounted on the support platform (16) at a position below the left end of the return conveyor (25); the pill outlet of the second pill-residue separator (261) is sealedly connected to the feeding screw conveyor (262) via a pipeline; the outlet end of the feeding screw conveyor (262) is arranged at the feeding port of the second elevator (21).

8. A shot blasting system for steel pipe anticorrosion according to claim 1, characterized in that: A cable (19) is hung on the right side of the support platform (16) at a position directly above the support shaft (18) and higher than the upper surface of the suspension beam (17), and both ends of the cable (19) are respectively fixedly connected to the suspension beam (17).

9. A shot blasting system for steel pipe anticorrosion according to claim 1, characterized in that: The shot blasting box (22) is connected to the suspension beam (17) via bolts, and a cushion block is provided between the shot blasting box (22) and the suspension beam (17).

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