A hot-rolled strip iron oxide scale treatment system

Abstract

The present invention relates to the technical field of hot-rolled strip production, and specifically to a hot-rolled strip iron oxide scale processing system, comprising a frame, a conveying device fixedly mounted on the inner bottom wall of the frame, a fixed plate fixedly mounted on the inner side wall of the frame, a sandblasting pipe fixedly mounted on the fixed plate, a sand feed pipe and an air intake pipe connected to the sandblasting pipe, and an anti-blocking device for preventing the sand feed pipe from being blocked fixedly mounted on the fixed plate. The present invention fixes an anti-blocking device at the connection between the housing and the sandblasting pipe to automatically detect whether the sand feed pipe is blocked. When the sand feed pipe is blocked, the weight of the sand feed pipe gradually increases, and the sand feed pipe gradually moves downward. When the sand feed pipe gradually moves downward under the traction of gravity and moves to a certain position, the sand feed pipe contacts the alarm device to alarm, thereby realizing the automatic triggering of the alarm after the weight of the sand feed pipe increases, eliminating the need for manual supervision, and improving the convenience of equipment use.

Description

Technical Field

[0001] The invention relates to the technical field of hot-rolled strip steel production, in particular to a hot-rolled strip steel oxide scale processing system. Background Art

[0002] Hot-rolled strip refers to strips and plates produced by hot rolling. The thickness is generally between 1.2 and 8 mm. Strips with a width of less than 600 mm are called narrow strips, and those with a width of more than 600 mm are called wide strips. After the hot-rolled strip is hot-rolled and the plate leaves the hot rolling mill, a layer of iron oxide scale will form on the steel surface. The presence of iron oxide scale will affect the forming quality of the finished hot-rolled strip. For this reason, the hot-rolled strip iron oxide scale treatment system was born.

[0003] The hot-rolled strip is formed into a high-temperature hot-rolled strip through hot rolling in a hot rolling mill. After the hot-rolled strip is initially formed, it is placed on a conveyor and transported to a sandblasting machine via the conveyor. The sandblasting machine is equipped with a sandblasting gun. The sandblasting gun is usually a negative pressure sandblasting gun. The sand particles sprayed from the sandblasting tube impact the surface of the hot-rolled strip. The high-speed flowing sand particles remove the iron oxide formed on the surface of the hot-rolled strip.

[0004] We found that during the sandblasting process, due to the slow flow rate of sand particles flowing in the sand inlet pipe of the negative pressure sandblasting gun, sometimes larger sand particles will be encountered, blocking the outlet of the sand inlet pipe and then blocking the sand inlet pipe. It is necessary to monitor the status of the sandblasting gun in time, but the staff cannot always stare at the machine equipment. If the blockage cannot be discovered in time, it will affect the treatment effect of the iron oxide scale on the surface of the hot-rolled strip.

[0005] Therefore, a hot-rolled strip scale treatment system is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a hot-rolled strip iron oxide scale processing system, by installing a hose between the sandblasting pipe and the sand inlet pipe, and adding an alarm device under the sand inlet pipe, the alarm device is triggered to alarm when the weight of the sand inlet pipe increases or decreases after the sand inlet pipe is blocked, so as to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A hot-rolled strip scale treatment system comprises a frame, a conveying device is fixedly mounted on the inner bottom wall of the frame, a fixing plate is fixedly mounted on the inner side wall of the frame, a sandblasting pipe is fixedly mounted on the fixing plate, and the sandblasting pipe is connected to a sand inlet pipe and an air inlet pipe;

[0009] Also includes:

[0010] An anti-blocking device is installed on the fixed plate to prevent the sand inlet pipe from being blocked.

[0011] Preferably, the anti-blocking device includes:

[0012] A hose is fixedly mounted on the outer wall of the sandblasting tube, and one end of the hose away from the sandblasting tube is fixedly connected to a sand inlet pipe;

[0013] A support assembly is fixedly mounted on the top wall of the fixed plate to support the sand inlet pipe and the hose;

[0014] An alarm device is installed on the top wall of the fixed plate to alarm when the sand inlet pipe is blocked.

[0015] Preferably, the support assembly includes a support rod fixedly mounted on the fixed plate, a shell is fixedly mounted on the top wall of the support rod at one end away from the fixed plate, a built-in cavity is provided on the shell, an electromagnet is fixedly mounted in the built-in cavity, a through groove is provided on the side wall of the shell at one end away from the support rod, an electromagnet is slidably mounted in the through groove, a fastening seat is sleeved on one end of the sand inlet pipe close to the hose, a pressure plate is fixedly connected to the bottom wall side wall of the fastening seat, an arc groove is provided on the side wall of the fastening seat, one end of the electromagnet is slidably connected in the arc groove, a vibration motor is fixedly mounted in the built-in cavity in the shell, and the output end of the vibration motor is fixedly connected to one end of the electromagnet.

[0016] Preferably, a magnetic block adapted to the electromagnet is fixedly installed in the arc groove.

[0017] Preferably, the alarm device includes a spring elastically connected to the fixed plate, one end of the spring away from the fixed plate is elastically connected to the bottom wall of the fastening seat, a support frame is fixedly installed on the fixed plate near the spring, an alarm block is fixedly installed on the top wall of the support frame, and the vibration motor is electrically connected to the alarm block.

[0018] Preferably, the fastening seat includes a first fastening block and a second fastening block, and the first fastening block and the second fastening block are commonly provided with a threaded through hole, a fastening screw is threadedly connected to the threaded through hole, and one end of the first fastening block and the second fastening block are hinged by a hinge.

[0019] Preferably, an external connecting rod is fixedly connected to the side wall of the fixed plate, one end of the external connecting rod is rotatably connected to a rotating sleeve via a rotating shaft, and the sandblasting tube is sleeved on the rotating sleeve.

[0020] Preferably, an external connecting rod is fixedly connected to the side wall of the fixed plate, one end of the external connecting rod is rotatably connected to a rotating sleeve via a rotating shaft, and the sandblasting tube is sleeved on the rotating sleeve.

[0021] Preferably, a metal protective cover is fixedly mounted on the fixing plate, and the support frame and the alarm block are both located inside the metal protective cover.

[0022] Preferably, a movable groove is provided on the metal protective cover.

[0023] Preferably, the movable groove is slidably connected to a contact plate, the bottom wall of the contact plate is fixedly connected to an elastic sleeve, and the alarm block is located below the elastic sleeve.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention is equipped with an anti-blocking device at the connection between the machine casing and the sandblasting pipe, which can automatically detect whether the sand feed pipe is blocked. When the sand feed pipe is blocked, the weight of the sand feed pipe will gradually increase, and the sand feed pipe will gradually move downward. When it gradually moves downward to a certain position due to the traction of gravity, the sand feed pipe will alarm by contacting the alarm device, thereby automatically triggering the alarm when the weight of the sand feed pipe increases, eliminating the need for manual supervision and improving the convenience of equipment use.

[0026] 2. Add a metal protective cover around the automatic alarm device. Under the protection of the metal protective cover, the automatic alarm device will not be affected by external sand particles, ensuring that the automatic alarm device can work normally in harsh working environments and improving the stability of system operation.

[0027] 3. A movable groove is opened on the outside of the metal protective cover, and the sand inlet pipe moves downward from the position defined by the movable groove. The movable groove can protect the alarm device in the metal protective cover, while protecting the alarm device, and does not affect the normal operation of the alarm operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the external structure of the present invention;

[0029] Figure 2 This is a structural diagram of the sandblasting tube of the present invention;

[0030] Figure 3 This is a schematic diagram of the sand inlet pipe structure of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the anti-blocking device of the present invention;

[0032] Figure 5 It is a schematic diagram of the protective cover structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the internal structure of the protective cover of the present invention;

[0034] Figure 7 Schematic diagram of the installation of the magnetic block of the present invention.

[0035] In the figure: 1. Frame; 2. Conveyor belt device; 3. Fixed plate; 4. Support rod; 5. Sand inlet pipe; 6. Hose; 7. Air inlet pipe; 8. Sandblasting pipe; 9. Vibration motor; 10. External rod; 11. Rotating sleeve; 12. Rotating shaft; 13. Fastening seat; 14. Magnetic block; 15. Support frame; 16. Spring; 17. Pressure plate; 18. Electromagnet; 19. Housing; 20. Fastening screw; 21. Arc groove; 22. Alarm block; 131. First fastening block; 132. Second fastening block; 24. Metal protective cover; 25. Moving groove; 26. Contact plate; 27. Elastic sleeve. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figures 1 to 7 The present invention provides a hot-rolled strip iron oxide scale treatment system, the technical solution is as follows:

[0038] A hot-rolled strip scale processing system includes a frame 1, a conveying device fixedly mounted on the inner bottom wall of the frame 1, a fixing plate 3 fixedly mounted on the inner side wall of the frame 1, and a sandblasting tube 8 fixedly mounted on the fixing plate 3.

[0039] When the surface of the hot-rolled strip is treated with iron oxide, the conveyor belt device 2 located at the bottom of the shell 19 transports the formed hot-rolled strip through the shell 19, and the air inlet pipe 7 and the sand inlet pipe 5 of the sandblasting tube 8 are connected to an external pressurizing device. The pressurizing device pumps gas and sand particles into the air inlet pipe 7 and the sand inlet pipe 5 of the sandblasting tube 8 respectively. The pressurized gas and sand particles jointly impact the surface of the hot-rolled strip, flushing the iron oxide on the surface, and completing the operation process of removing the iron oxide.

[0040] The conveying equipment referred to in the present invention is the belt conveying equipment in the prior art. Any plate conveyor, etc., can be used as long as it can realize the conveying of hot-rolled strip steel. The sandblasting tube 8 mentioned in the present invention is the existing pressurized sandblasting tube 8.

[0041] Also includes:

[0042] Anti-blocking device: An anti-blocking device is installed on the fixed plate 3 to prevent the sandblasting pipe 8 from being blocked.

[0043] When the sandblasting tube 8 is continuously working, granular sand continuously flows into the sand inlet pipe 5. Since the pipe opening of the sand inlet pipe 5 is inclined to the pipe opening of the air inlet pipe 7, the sand inlet pipe 5 is easily blocked near the sandblasting tube 8. After the sand inlet pipe 5 is blocked near the sandblasting tube 8 for a long time, the granular sand in the pipe gradually accumulates, which increases the pipe weight of the sand inlet pipe 5. As the weight increases, the sand inlet pipe 5 droops. After the sand inlet pipe 5 droops, it contacts the anti-blocking device on the fixed plate 3. The anti-blocking device alarms, prompting the staff to clean or replace the sand inlet pipe 5.

[0044] As an embodiment of the present invention, refer to Figure 1 , the anti-blocking device includes:

[0045] Hose 6, a hose 6 is fixedly installed on the outer wall of the sandblasting tube 8, and the end of the hose 6 away from the sandblasting tube 8 is fixedly connected to the sand inlet pipe 5;

[0046] Support assembly: A support assembly for supporting the sand inlet pipe 5 and the hose 6 is fixedly installed on the top wall of the fixed plate 3;

[0047] An alarm device is installed on the top wall of the fixed plate 3 to alarm when the sand inlet pipe is blocked.

[0048] When the weight of the sand inlet pipe 5 increases, the sand inlet pipe 5 moves downward along the direction defined by the support assembly. When the sand inlet pipe 5 moves downward to a certain height, the sand inlet pipe 5 contacts the alarm device located on the fixed plate 3, and the alarm device sounds. The alarm device is electrically connected to the external control system, prompting manual replacement or cleaning of the sandblasting pipe 8.

[0049] As an embodiment of the present invention, refer to Figure 2 The support assembly includes a support rod 4 fixedly mounted on the fixed plate 3, and a shell 19 is fixedly mounted on the top wall of the end of the support rod 4 away from the fixed plate 3, and a built-in cavity is opened on the shell 19, and an electromagnet 18 is fixedly mounted in the built-in cavity. A through groove is opened on the side wall of the end of the shell 19 away from the support rod 4, and the electromagnet 18 is slidably mounted in the through groove. The end of the sand inlet pipe 5 close to the hose 6 is sleeved with a fastening seat 13, and the bottom wall side wall of the fastening seat 13 is fixedly connected to a pressure plate 17, and an arc groove 21 is opened on the side wall of the fastening seat 13. One end of the electromagnet 18 is slidably connected in the arc groove 21, and a vibration motor 9 is fixedly mounted in the built-in cavity in the shell 19, and the output end of the vibration motor 9 is fixedly connected to one end of the electromagnet 18, and the vibration motor 9 is electrically connected to the alarm device.

[0050] A through groove is provided in the shell 19, and a vibration motor 9 is fixedly installed in the through groove. The output end of the vibration motor 9 is fixedly connected to a magnetic block 14. When the sand particles in the sand inlet pipe 5 are blocked to a certain extent, the sand inlet pipe 5 moves downward under the traction of gravity, and the sand inlet pipe 5 drives the fastening seat 13 to move downward. At this time, the trajectory of relative movement of the fastening seat 13 and the shell 19 is the trajectory defined by the arc groove 21. When the sand inlet pipe 5 moves downward to the position where the alarm device is contacted, the power supply on the alarm device is triggered, and the power supply of the vibration motor 9 is turned on. The vibration motor 9 drives the electromagnet 18 to vibrate, and drives the fastening seat 13 to vibrate in the horizontal direction. The frequency of the vibration motor 9 is relatively high, which drives the sand inlet pipe 5 to vibrate at a higher frequency, thereby loosening the sand particles blocked in the pipe. Under the continuous pressure of the external pressure equipment, the sand particles are dredged as the pressure pushes, completing the pre-cleaning process of the sand inlet pipe 5.

[0051] As an embodiment of the present invention, refer to Figure 3 and Figure 4 A magnetic block 14 that matches the electromagnet 18 is fixedly installed in the arc groove 21.

[0052] When the fastening seat 13 moves downward to the place where it contacts the alarm device, the electromagnet 18 is opposite to the position of the magnetic block 14, and the electromagnet 18 is electrically connected to the alarm device. When the alarm device is powered on, the electromagnet 18 is also powered on and generates magnetic attraction, which forms an attraction force on the magnetic block 14, fixing the magnetic block 14 on the electromagnet 18, thereby fixing the fastening seat 13 in the vertical and horizontal directions. When the vibration motor 9 is powered on to generate vibration, the fastening seat 13 will not separate from the magnetic block 14, thereby improving the stability of vibration pre-cleaning.

[0053] As an embodiment of the present invention, refer to Figure 1 The alarm device includes a spring 16 elastically connected to the fixed plate 3, and one end of the spring 16 away from the fixed plate 3 is elastically connected to the bottom wall of the fastening seat 13. A support frame 15 is fixedly installed on the fixed plate 3 near the spring 16, and an alarm block 22 is fixedly installed on the top wall of the support frame 15. The vibration motor 9 is electrically connected to the alarm block 22.

[0054] A spring 16 is elastically connected to the fixed plate 3, and one end of the spring 16 away from the fixed plate 3 is elastically connected to the fastening seat 13. When the sand particles in the sand inlet pipe 5 are blocked to a certain extent, the gravity of the sand inlet pipe 5 is greater than the elastic force of the spring 16, and the sand inlet pipe 5 drives the fastening seat 13 to compress the spring 16 and move downward. The pressure plate 17 at one end of the fastening seat 13 contacts the alarm block 22 located on the top of the support frame 15 as the fastening seat 13 moves downward. A pressure sensor is fixedly installed on the alarm block 22, and the alarm block 22 is connected to the power supply of the external control system through an electric wire. After the pressure plate 17 contacts the pressure sensor, the pressure sensor is sensed and triggers the power supply of the alarm block 22. The alarm block 22 continues to sound the alarm, realizing the automatic triggering process of the alarm block 22 by increasing the weight after the sand inlet pipe 5 is blocked.

[0055] The alarm block mentioned in the present invention can be a contact alarm lamp in the prior art, or can be other alarm prompters that can sound to prompt staff.

[0056] As an embodiment of the present invention, refer to Figure 4 The fastening seat 13 includes a first fastening block 131 and a second fastening block 132. The first fastening block 131 and the second fastening block 132 are commonly provided with a threaded through hole, and a fastening screw 20 is threadedly connected in the threaded through hole. One end of the first fastening block 131 and the second fastening block 132 are hinged by a hinge.

[0057] The fastening seat 13 includes a first fastening block 131 and a second fastening block 132. Threaded through holes are provided on the first fastening block 131 and the second fastening block 132. A fastening screw 20 is threadedly connected to the threaded through holes. When the sand inlet pipe 5 is blocked, if the vibration motor 9 cannot clear the sand blocked in the sand inlet pipe 5 after vibrating for a period of time, as the alarm continues to alarm, the sand inlet pipe 5 needs to be manually disassembled for cleaning. When the sand inlet pipe 5 needs to be manually disassembled, the fastening screw 20 is manually removed, and one end of the first fastening block 131 and the second fastening block 132 are hinged by a hinge, and the first fastening block 131 is turned over, and the sand inlet pipe 5 is subjected to the next step of cleaning operation. After the alarm device and the vibration motor 9 are added for pre-cleaning, the manual cleaning operation is not affected.

[0058] As an embodiment of the present invention, refer to Figure 1 An external connecting rod 10 is fixedly connected to the side wall of the fixed plate 3 , one end of the external connecting rod 10 is rotatably connected to a rotating sleeve 11 through a rotating shaft 12 , and the sandblasting tube 8 is sleeved on the rotating sleeve 11 .

[0059] An external rod 10 is fixedly connected to the side wall of the fixed plate 3, and one end of the external rod 10 is rotatably connected to a rotating sleeve 11 through a rotating shaft 12. The rotating sleeve 11 is a circular rotating sleeve 11, and the sandblasting tube 8 is sleeved on the rotating sleeve 11. The rotating sleeve 11 can rotate around the rotating shaft 12 and drive the sandblasting tube 8 to rotate around the rotating shaft 12 at a certain angle. During the processing, as the thickness or position of the hot-rolled strip to be processed changes, the spraying angle of the sandblasting tube 8 needs to be adjusted. Someone manually rotates the sandblasting tube 8 around the rotating shaft 12 to a specified angle to adapt to different processing requirements. The rotating connection between the external rod 10 and the rotating shaft 12 is surface-frosted and has a large friction force. After rotating to the specified angle, it can be fixed by friction and will not rotate without human push.

[0060] As an embodiment of the present invention, refer to Figure 5 and Figure 6 A metal protective cover 24 is fixedly mounted on the fixed plate 3 , and the support frame 15 and the alarm block 22 are both located inside the metal protective cover 24 .

[0061] When the surface of the hot-rolled strip is treated with iron oxide scale, sand particles are sprayed out of the sandblasting tube 8. Under high pressure and high speed, the sand particles are sprayed out from the outlet of the sandblasting tube 8 to form a spray, which is dispersed in the air and has a large distribution space. The support frame 15 and the alarm block 22 are covered with a metal protective cover 24 to prevent the sand particles sprayed into the air from entering the alarm block 22 and contacting the pressure sensor on the alarm block 22, thereby preventing the pressure sensor from failing and ensuring the stability of the overall structural operation.

[0062] As an embodiment of the present invention, refer to Figure 6 and Figure 7 A moving groove 25 is provided on the metal protective cover 24, and the inner side wall of the moving groove 25 is surface-polished.

[0063] A moving groove 25 is provided on the metal protective cover 24, and the inner side wall of the moving groove 25 is surface-polished to form a smooth side wall. When the sand inlet pipe 5 is blocked to a certain extent, the sand inlet pipe 5 moves downward and moves downward along the moving groove 25. The sand inlet pipe 5 contacts the pressure sensor on the support frame 15, triggering the alarm device. The moving groove 25 is provided on the metal protective cover 24, so that the sand inlet pipe 5 can move downward along the moving groove 25. While protecting the alarm device, it does not affect the downward movement of the sand inlet pipe 5, thereby ensuring the normal operation of the overall structure.

[0064] As an embodiment of the present invention, refer to Figure 7 A contact plate 26 is slidably connected in the movable groove 25 , and an elastic sleeve 27 is fixedly connected to the bottom wall of the contact plate 26 , and the alarm block 22 is located below the elastic sleeve 27 .

[0065] The contact plate 26 is slidably connected to the movable groove 25, and the bottom wall of the contact plate 26 is fixedly connected to an elastic sleeve 27. When the sand inlet pipe 5 compresses the spring 16 and moves downward, the bottom wall of the pressure plate 17 first contacts the contact plate 26, exerting downward pressure on the contact plate 26. The contact plate 26 moves downward to compress the elastic sleeve 27. The elastic sleeve 27 contacts the pressure sensor on the alarm block 22, completing the contact alarm process. The contact plate 26 is set to trigger the pressure sensor. While ensuring that the triggering operation can operate normally, the contact plate 26 can also prevent sand particles from entering the metal protective cover 24, further improving the sand prevention effect.

[0066] Working principle: During the processing operation, the hot-rolled strip steel is transported through the frame 1 by the conveying equipment. At this time, the externally connected pressurizing equipment applies pressure to the stored sand particles and pumps gas from the air inlet pipe 7. The sand particles enter the sandblasting pipe 8 from the sand inlet pipe 5. At the same time, the pressurized gas enters the sandblasting pipe 8 from the air inlet pipe 7, contacts and cooperates with the sand particles. The pressurized gas blows the sand particles toward the opening of the sandblasting pipe 8 and is ejected from the opening of the sandblasting pipe 8. The sand particles contact the surface of the hot-rolled strip steel and continuously impact, thereby removing the iron oxide scale on the surface of the hot-rolled strip steel. When the sand inlet pipe 5 is blocked, the weight of the sand inlet pipe 5 gradually increases. When the sand inlet pipe 5 increases to a certain extent, the sand inlet pipe 5 will compress the spring 16 for a certain distance, and the pressure plate 17 on the fastening seat 13 will contact the alarm located on the support frame 15. The alarm block 22 has a pressure sensor fixed on it. The pressure sensor is subjected to the pressure exerted by the pressure plate 17 and the power supply of the alarm block 22 is turned on. The alarm block 22 starts the alarm. At the same time, the power supply of the vibration motor 9 is also turned on, generating vibration. The sand feed pipe 5 is shaken left and right, and the sand particles in the sand feed pipe 5 are loosened and dredged. After the vibration motor 9 shakes for a period of time, the magnetic block 14 is powered off. If the sand feed pipe 5 is dredged, the spring 16 pushes the sand feed pipe 5 upward, the pressure plate 17 leaves the alarm block 22, and the alarm block 22 ends the alarm and resumes normal work. If the sand feed pipe 5 is not dredged after the vibration motor 9 vibrates for a period of time, the alarm block 22 will continue to alarm. The staff will remove the fastening screw 20, open the first fastening block 131, and dredge the sand feed pipe 5 to complete the process of cleaning the blockage of the sand feed pipe 5.

[0067] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the purpose of this technical solution based on the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more compatible with and in line with the technical solution of the present invention. It is a technical solution for the best application of this technical solution. The model of its product can be replaced and modified according to the technical parameters required. It is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0068] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hot-rolled strip iron oxide scale treatment system, comprising a frame (1), a conveying device fixedly mounted on the inner bottom wall of the frame (1), a fixing plate (3) fixedly mounted on the inner side wall of the frame (1), a sandblasting tube (8) fixedly mounted on the fixing plate (3), and a sand inlet pipe (5) and an air inlet pipe (7) connected to the sandblasting tube (8); characterized in that: Also includes: An anti-blocking device is installed on the fixed plate (3) to prevent the sand inlet pipe (5) from being blocked; The anti-blocking device comprises: A hose (6), wherein the hose (6) is fixedly mounted on the outer wall of the sandblasting tube (8), and one end of the hose (6) away from the sandblasting tube (8) is fixedly connected to a sand inlet pipe (5); A support assembly, wherein a support assembly for supporting the sand inlet pipe (5) and the hose (6) is fixedly mounted on the top wall of the fixed plate (3); An alarm device is installed on the top wall of the fixed plate (3) to give an alarm when the sand inlet pipe is blocked; The support assembly comprises a support rod (4) fixedly mounted on the fixed plate (3), a housing (19) fixedly mounted on the top wall of one end of the support rod (4) away from the fixed plate (3), a built-in cavity is provided on the housing (19), an electromagnet (18) is fixedly mounted in the built-in cavity, a through groove is provided on the side wall of one end of the housing (19) away from the support rod (4), the electromagnet (18) is slidably mounted in the through groove, the end of the sand inlet pipe (5) close to the hose (6) is sleeved with a fastening seat (13), the bottom wall side wall of the fastening seat (13) is fixedly connected to a pressure plate (17), an arc groove (21) is provided on the side wall of the fastening seat (13), one end of the electromagnet (18) is slidably connected in the arc groove (21), a vibration motor (9) is fixedly mounted in the built-in cavity in the housing (19), and the output end of the vibration motor (9) is fixedly connected to one end of the electromagnet (18).

2. The hot-rolled strip scale treatment system according to claim 1, characterized in that: A magnetic block (14) adapted to the electromagnet (18) is fixedly installed in the arc-shaped groove (21).

3. The hot-rolled strip scale treatment system according to claim 1, characterized in that: The alarm device comprises a spring (16) elastically connected to the fixed plate (3), one end of the spring (16) away from the fixed plate (3) is elastically connected to the bottom wall of the fastening seat (13), a support frame (15) is fixedly installed on the fixed plate (3) near the spring (16), an alarm block (22) is fixedly installed on the top wall of the support frame (15), and the vibration motor (9) is electrically connected to the alarm block (22).

4. The hot-rolled strip scale treatment system according to claim 2, characterized in that: The fastening seat (13) comprises a first fastening block (131) and a second fastening block (132), wherein the first fastening block (131) and the second fastening block (132) are both provided with a threaded through hole, wherein a fastening screw (20) is threadedly connected to the threaded through hole, and one end of the first fastening block (131) and the second fastening block (132) are hingedly connected via a hinge.

5. The hot-rolled strip scale treatment system according to claim 4, characterized in that: An external connecting rod (10) is fixedly connected to the side wall of the fixed plate (3), one end of the external connecting rod (10) is rotatably connected to a rotating sleeve (11) via a rotating shaft (12), and the sandblasting tube (8) is sleeved on the rotating sleeve (11).

6. The hot-rolled strip scale treatment system according to claim 4, characterized in that: A metal protective cover (24) is fixedly mounted on the fixing plate (3), and the support frame (15) and the alarm block (22) are both located inside the metal protective cover (24).

7. The hot-rolled strip scale treatment system according to claim 6, characterized in that: The metal protective cover (24) is provided with a moving groove (25).

8. The hot-rolled strip scale treatment system according to claim 7, characterized in that: The movable groove (25) is slidably connected to a contact plate (26), the bottom wall of the contact plate (26) is fixedly connected to an elastic sleeve (27), and the alarm block (22) is located below the elastic sleeve (27).

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