Surface treatment equipment for plate blank

Abstract

The invention discloses plate blank surface treatment equipment, and relates to the technical field of plate blank surface treatment.The plate blank surface treatment equipment comprises a base, a driving motor is fixedly installed on the outer wall of the right end of the base, a rotating roller is fixedly installed at the output end of the driving motor, and a transmission belt is rotatably installed on the outer wall of the rotating roller; an electric push rod is fixedly installed on the outer wall of the center end of the base, a telescopic rod is fixedly installed at the output end of the electric push rod, a fixing plate is fixedly installed at the top of the telescopic rod, and an outer frame is fixedly installed at the top of the fixing plate. The side wall of the plate blank is firmly clamped, through the arrangement of the rolling wheels, the plate blank can be stably conveyed to a surface treatment area, it is ensured that the deviation amplitude of the plate blank in the conveying process is reduced, damage caused by direct collision to the inner wall of the box body is avoided, and it can be ensured that the plate blank is stably conveyed to the surface treatment area.

Description

Technical Field

[0001] The invention relates to the technical field of slab surface treatment, in particular to a slab surface treatment device. Background Art

[0002] With the advancement of industrialization, especially the increasing application in key fields such as construction, automobiles, home appliances and machinery manufacturing, the market demand for high-efficiency and high-precision slab surface treatment equipment has increased significantly.

[0003] The patent with the patent announcement number CN217664869U discloses a slab processing device, which relates to the technical field of slab cleaning equipment, and specifically provides a slab processing device, including a box body, a scraping component and a conveying component, wherein the conveying component runs through the box body, the conveying component is used to drive the slab to move through the box body, and the bottom end of the scraping component is used to contact with the slab to scrape the surface of the slab. The slab processing device provided by the patent, wherein the slab is moved into the box body by the conveying component, and the box body provides space for the slab to remove iron oxide scale and steel slag, and during the movement of the slab in the box body, the iron oxide scale and steel slag on the surface of the slab are scraped by the bottom end of the scraping component contacting the slab, thereby ensuring the quality of the slab, with a simple structure, low cost, easy implementation, convenient replacement of spare parts, and reliable use.

[0004] In the above patent, however, the current slab handling device has the following problem: after the device places the slab on the top of the conveying roller, the device has no fixing effect on the outer wall of the slab, which will cause the slab to deviate during the conveying process, causing it to hit the inner wall of the box and cause damage to the equipment. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a surface treatment device for a slab, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical scheme: a surface treatment device for a slab, comprising a base, a driving motor is fixedly installed on the outer wall of the right end of the base, a rotating rod is fixedly installed on the output end of the driving motor, a transmission belt is rotatably installed on the outer wall of the rotating rod, an electric push rod is fixedly installed on the outer wall of the center end of the base, a telescopic rod is fixedly installed on the output end of the electric push rod, a fixed plate is fixedly installed on the top of the telescopic rod, an outer frame is fixedly installed on the top of the fixed plate, a turning machine is fixedly installed on the outer wall of the right end of the outer frame, a rotating extension rod is fixedly installed on the output end of the turning machine, a grinding roller is fixedly installed on the outer wall of the rotating extension rod, a centering device for centering the slab is provided on the inner wall of the base, and a dustproof device for preventing flying dust is provided on the outer wall of the outer frame.

[0007] According to the above technical solution, the centering device includes a sliding frame, a spring sheet, a rotating short rod and a roller. The sliding frame passes through and is slidably installed on the inner wall of the base. The spring sheet is installed between the sliding frame and the base. The rotating short rod is rotatably installed on the inner wall of the sliding frame. The roller is installed on the outer wall of the rotating short rod.

[0008] According to the above technical solution, there are two sliding frames, and the left ends of the two sliding frames are set with inclined surfaces, the spring sheet is fixedly connected to the outer wall of the sliding frame close to the base, and there are several short turning rods, and the several short turning rods are evenly and equidistantly fixedly installed on the inner wall of the sliding frame.

[0009] According to the above technical solution, the centering device also includes a T-shaped centering plate, a rotating column, a transmission bar and a resistance block. The T-shaped centering plate is slidably installed on the inner wall of the sliding frame, the rotating column is rotatably installed on the inner wall of the sliding frame close to the right side wall of the T-shaped centering plate, the transmission bar is rotatably installed on the outer walls of the rotating column and the rotating short rod respectively, and the resistance block is installed on the outer wall of the top end of the rotating column.

[0010] According to the above technical solution, there are several T-shaped center plates, the interference block is fixedly connected to the outer wall of the top end of the rotating column, and there are several interference blocks, and the several interference blocks are respectively in contact with the back sides of several T-shaped center plates.

[0011] According to the above technical solution, the dustproof device includes a long frame, a rotating rod, a dustproof plate and a torsion spring. The long frame is installed on the outer wall of the outer frame, the rotating rod is rotatably installed on the inner wall of the long frame, the dustproof plate is installed on the outer wall of the rotating rod, and the torsion spring is arranged between the outer walls of the long frame and the rotating rod.

[0012] According to the above technical solution, the number of the long frames is two, and the two long frames are fixedly connected to the outer wall of the outer frame, and the dustproof plate is fixedly connected to the outer wall of the rotating rod.

[0013] According to the above technical solution, the dust-proof device also includes a triangular block, a left triangular block and a right triangular block. The triangular block is installed on the outer wall of the rotating rod, the left triangular block is installed on the outer wall of the rotating rod on the left side of the outer frame, and the right triangular block is installed on the outer wall of the rotating rod on the right side of the outer frame.

[0014] According to the above technical solution, the number of the triangular blocks is four, and two triangular blocks form a group, and each group of triangular blocks is fixedly installed on the outer wall of the rotating rod, the left triangular block is fixedly connected to the outer wall of the rotating rod on the left side of the outer frame, and the right triangular block is fixedly connected to the outer wall of the rotating rod on the right side of the outer frame.

[0015] The present invention provides a surface treatment device for slabs. It has the following beneficial effects:

[0016] (1) The invention arranges a centering device so that the roller rotates counterclockwise, and the side wall of the slab is firmly clamped by the inward elastic force of the spring sheet. The roller arrangement can stably convey the slab to the surface treatment area, thereby ensuring that the displacement of the slab is reduced during transportation, avoiding direct impact on the inner wall of the box to cause damage, and ensuring that the slab is stably conveyed to the surface treatment area, so that the T-shaped centering plate moves toward the side wall of the slab, that is, moves outward, and the T-shaped centering plates on both sides will contact the side wall of the slab and push it toward the middle, thereby preventing the slab from slight displacement due to vibration during movement, realizing automatic centering adjustment of the slab during transportation, thereby further improving the stability of the slab during transportation.

[0017] (2) The invention sets a dustproof device, and the electric push rod stops working. The dustproof plate will contact the top of the slab, and then the torsion spring is set to make the dustproof plate rotate upward on the inner wall of the long frame with the rotating rod as the center. The dustproof plate will provide a downward pressing force for the slab, and the grinding roller will also start to grind the surface of the slab. The metal chips generated during the grinding will splash onto the inner surface of the dustproof plate. The design of the dustproof plate not only provides a downward pressing force to stabilize the slab, but also effectively prevents the metal chips generated during the grinding process from splashing, thereby The safety and cleanliness of the working environment are improved, so that the triangular blocks respectively contact the left triangular block upwards and the right triangular block downwards, the left triangular block and the right triangular block respectively drive the rotating rod to rotate, and the rotating rod drives the dustproof plate to rotate. When the triangular blocks are released from contact, the dustproof plate is reset by the torsion spring, and the swing of the dustproof plate helps to prevent impurities such as metal debris from adhering to the dustproof plate. Each swing of the dustproof plate will mobilize the surrounding airflow to shake off and blow away the attached debris, thereby keeping the dustproof plate clean and the normal operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a bottom view schematic diagram of the overall structure of the present invention;

[0020] Figure 3 is a cross-sectional schematic diagram of the centering device of the present invention;

[0021] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the middle part;

[0022] Figure 5 is a cross-sectional schematic diagram of the dustproof device of the present invention;

[0023] Figure 6 For the present invention Figure 5 The enlarged schematic diagram at B in the middle;

[0024] Figure 7 For the present invention Figure 5 Enlarged schematic diagram of point C in the middle.

[0025] In the figure: 1. base; 11. driving motor; 12. rotating rod; 13. transmission belt; 21. electric push rod; 22. telescopic rod; 23. fixed plate; 24. outer frame; 25. turning machine; 26. rotating long rod; 27. grinding roller; 3. centering device; 31. sliding frame; 32. spring; 33. rotating short rod; 34. roller; 35. T-shaped centering plate; 36. rotating column; 37. transmission bar; 38. resistance block; 4. dustproof device; 41. long frame; 42. rotating rod; 43. dustproof plate; 44. torsion spring; 45. triangular resistance block; 46. left triangular block; 47. right triangular block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 4 One embodiment of the present invention is: a surface treatment device for a slab, comprising a base 1, a driving motor 11 is fixedly installed on the outer wall of the right end of the base 1, a rotating stick 12 is fixedly installed on the output end of the driving motor 11, a transmission belt 13 is rotatably installed on the outer wall of the rotating stick 12, the driving motor 11 is turned on, the driving motor 11 drives the rotating stick 12 to rotate, the rotating stick 12 drives the transmission belt 13 to rotate, the transmission belt 13 transports the slab inward, an electric push rod 21 is fixedly installed on the outer wall of the center end of the base 1, a telescopic rod 22 is fixedly installed on the output end of the electric push rod 21, a fixed plate 23 is fixedly installed on the top of the telescopic rod 22, an outer frame 24 is fixedly installed on the top of the fixed plate 23, a turntable 25 is fixedly installed on the outer wall of the right end of the outer frame 24, and the turntable 25 is fixedly installed on the outer wall of the right end of the outer frame 24. A rotating rod 26 is fixedly installed at the output end of the machine 25, and a grinding roller 27 is fixedly installed on the outer wall of the rotating rod 26. After the driving motor 11 is turned on, the electric push rod 21 is also turned on. The electric push rod 21 drives the telescopic rod 22 to move downward, the telescopic rod 22 drives the fixed plate 23 to move downward, the fixed plate 23 drives the outer frame 24 to move downward, the outer frame 24 drives the rotating machine 25 and the rotating rod 26 to move downward, the rotating rod 26 drives the grinding roller 27 to move downward, and after the grinding roller 27 contacts the top of the slab, the rotating machine 25 is turned on, the rotating machine 25 drives the rotating rod 26 to rotate, and the rotating rod 26 drives the grinding roller 27 to rotate. The inner wall of the base 1 is provided with a centering device 3 for centering the slab, and the outer wall of the outer frame 24 is provided with a dustproof device 4 for preventing flying dust.

[0028] The centering device 3 includes a sliding frame 31, a spring piece 32, a rotating short rod 33 and a roller 34. The sliding frame 31 penetrates and is slidably installed on the inner wall of the base 1. There are two sliding frames 31, and the left ends of the two sliding frames 31 are arranged with inclined surfaces. The slab is pushed in through the inclined surface of the left end of the sliding frame 31, and the front end of the slab will push the sliding frame 31 outward. The spring piece 32 is installed between the sliding frame 31 and the base 1. The spring piece 32 is fixedly connected to the outer wall of the sliding frame 31 close to the base 1. The sliding frame 31 squeezes the spring piece 32, and the spring piece 32 cooperates with the sliding frame 31 to fit the side wall of the slab. The rotating short rod 33 is rotatably installed on The inner wall of the sliding frame 31 has a plurality of rotating short rods 33, and the plurality of rotating short rods 33 are evenly and equidistantly fixedly installed on the inner wall of the sliding frame 31, and the rollers 34 are installed on the outer walls of the rotating short rods 33. The side walls of the slab will contact the rollers 34 on the rotating short rods 33, causing the rollers 34 to rotate counterclockwise. The side walls of the slab are firmly clamped by the inward elastic force of the spring sheet 32, and the setting of the rollers 34 can ensure that the slab can be smoothly transported to the surface treatment area, ensuring that the deviation amplitude of the slab is reduced during the transportation process, avoiding direct impact on the inner wall of the box to cause damage, and ensuring that the slab is smoothly transported to the surface treatment area.

[0029] The centering device 3 also includes a T-shaped centering plate 35, a rotating column 36, a transmission bar 37 and a resistance block 38. The T-shaped centering plate 35 is slidably installed on the inner wall of the sliding frame 31. The number of T-shaped centering plates 35 is several. The rotating column 36 is rotatably installed on the inner wall of the sliding frame 31 near the right side wall of the T-shaped centering plate 35. The transmission bar 37 is rotatably installed on the outer walls of the rotating column 36 and the rotating short rod 33 respectively. The resistance block 38 is installed on the outer wall of the top of the rotating column 36. The resistance block 38 is fixedly connected to the outer wall of the top of the rotating column 36, and the number of the resistance blocks 38 is several, and several resistance blocks 38 are respectively in contact with the back sides of several T-shaped centering plates 35. When the slab is pushed inward, the slab will be tilted due to the transmission belt 13. The front end of the slab will be stuck due to its right angle when it is transported, and the side wall of the slab will contact the roller 34 when the slab is transported inwardly, and the roller 34 drives the short rotating rod 33 to rotate, and the short rotating rod 33 drives the transmission bar 37 to rotate, and the transmission bar 37 drives the rotating column 36 to rotate, and the rotating column 36 drives the abutment block 38 to rotate, and the abutment block 38 abuts against the back side of the T-shaped centering plate 35, so that the T-shaped centering plate 35 moves toward the side wall of the slab, that is, moves outward, and the T-shaped centering plates 35 on both sides will contact the side wall of the slab and push it toward the middle, thereby preventing the slab from slight deviation caused by vibration during movement, realizing automatic centering adjustment of the slab during transportation, thereby further improving the stability of the slab during transportation.

[0030] When this embodiment is working, the driving motor 11 is turned on, the driving motor 11 drives the rotating rod 12 to rotate, and the rotating rod 12 drives the transmission belt 13 to rotate. The transmission belt 13 transports the slab inward and pushes the slab through the inclined surface at the left end of the sliding frame 31. The front end of the slab will push the sliding frame 31 outward, and the sliding frame 31 squeezes the spring piece 32. The spring piece 32 cooperates with the sliding frame 31 to fit the side wall of the slab. The side wall of the slab will contact the roller 34 on the rotating short rod 33, so that the roller 34 rotates counterclockwise, and the side wall of the slab is firmly clamped by the inward elastic force of the spring piece 32. The setting of the roller 34 can ensure that the slab can be smoothly transported to the surface treatment area, ensuring that the deviation amplitude of the slab is reduced during the transportation process, avoiding direct impact on the inner wall of the box to cause damage, and ensuring that the slab is smoothly transported to the surface treatment area.

[0031] When the slab is pushed inward, the slab will be transmitted at an angle due to the transmission belt 13, and the front end of the slab will be stuck due to its right angle. When the slab is conveyed inward, the side wall of the slab contacts the roller 34, and the roller 34 drives the short rotating rod 33 to rotate, and the short rotating rod 33 drives the transmission bar 37 to rotate, and the transmission bar 37 drives the rotating column 36 to rotate, and the rotating column 36 drives the abutment block 38 to rotate, and the abutment block 38 abuts against the back side of the T-shaped centering plate 35, so that the T-shaped centering plate 35 moves toward the side wall of the slab, that is, moves outward, and the T-shaped centering plates 35 on both sides will contact the side wall of the slab and push it toward the middle, thereby preventing the slab from being slightly offset due to vibration during movement, and realizing automatic centering adjustment of the slab during transportation, thereby further improving the stability of the slab during transportation.

[0032] See also Figure 5-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, the dustproof device 4 includes a long frame 41, a rotating rod 42, a dustproof plate 43 and a torsion spring 44. The long frame 41 is installed on the outer wall of the outer frame 24. The number of the long frames 41 is two, and the two long frames 41 are fixedly connected to the outer wall of the outer frame 24. The rotating rod 42 is rotatably installed on the inner wall of the long frame 41, the dustproof plate 43 is installed on the outer wall of the rotating rod 42, and the dustproof plate 43 is fixedly connected to the outer wall of the rotating rod 42. The torsion spring 44 is arranged between the outer wall of the long frame 41 and the rotating rod 42. At the same time, the electric push rod 21 stops operating. The dustproof plate 43 will contact the top of the slab, and then through the setting of the torsion spring 44, the dustproof plate 43 will rotate upward on the inner wall of the long frame 41 with the rotating rod 42 as the center. The dustproof plate 43 will provide a downward pressing force for the slab, and the grinding roller 27 will also start to grind the surface of the slab. The metal chips generated during grinding will splash onto the inner surface of the dustproof plate 43. The design of the dustproof plate 43 not only provides a downward pressing force to stabilize the slab, but also effectively prevents the metal chips generated during the grinding process from splashing, thereby improving the safety and cleanliness of the working environment.

[0033] The dustproof device 4 also includes a triangular block 45, a left triangular block 46 and a right triangular block 47. The triangular block 45 is installed on the outer wall of the rotating rod 26. The number of triangular blocks 45 is four, and two triangular blocks 45 form a group, and each group of triangular blocks 45 is fixedly installed on the outer wall of the rotating rod 26. When the rotating rod 42 rotates, the rotating rod 42 drives the triangular blocks 45 to rotate, and the triangular blocks 45 will rotate clockwise. The left triangular block 46 is installed on the outer wall of the rotating rod 42 on the left side of the outer frame 24, and the left triangular block 46 is fixedly connected to the outer wall of the rotating rod 42 on the left side of the outer frame 24. The right triangular block 47 is installed on the outer wall of the rotating rod 42 on the right side of the outer frame 24. The right triangular block 47 is fixedly connected to the outer wall of the right rotating rod 42 of the outer frame 24, so that the triangular block 45 respectively contacts the left triangular block 46 upward and contacts the right triangular block 47 downward. The left triangular block 46 and the right triangular block 47 respectively drive the rotating rod 42 to rotate, and the rotating rod 42 drives the dustproof plate 43 to rotate. When the triangular block 45 is released from contact, the dustproof plate 43 is reset through the torsion spring 44. The swing of the dustproof plate 43 helps to prevent impurities such as metal debris from adhering to the dustproof plate 43. Each time the dustproof plate 43 swings, the swing of the dustproof plate 43 will mobilize the surrounding airflow to shake off and blow away the attached debris, thereby keeping the dustproof plate 43 clean and the equipment operating normally.

[0034] When the present embodiment is working, after the driving motor 11 is turned on, the electric push rod 21 is also turned on, the electric push rod 21 drives the telescopic rod 22 to move downward, the telescopic rod 22 drives the fixed plate 23 to move downward, the fixed plate 23 drives the outer frame 24 to move downward, the outer frame 24 drives the turning machine 25 and the turning rod 26 to move downward, the turning rod 26 drives the grinding roller 27 to move downward, after the grinding roller 27 contacts the top of the slab, the turning machine 25 is turned on, the turning machine 25 drives the turning rod 26 to rotate, the turning rod 26 drives the grinding roller 27 to rotate, and at the same time, the electric push rod 21 stops operating. The dustproof plate 43 will contact the top of the slab, and then through the setting of the torsion spring 44, the dustproof plate 43 will rotate upward on the inner wall of the long frame 41 with the rotating rod 42 as the center. The dustproof plate 43 will provide a downward pressing force for the slab, and the grinding roller 27 will also start to grind the surface of the slab. The metal chips generated during grinding will splash onto the inner surface of the dustproof plate 43. Through the design of the dustproof plate 43, not only is a downward pressing force provided to stabilize the slab, but also the metal chips generated during the grinding process are effectively prevented from splashing, thereby improving the safety and cleanliness of the working environment.

[0035] When the rotating rod 42 rotates, the rotating rod 42 drives the triangular block 45 to rotate, and the triangular block 45 will rotate clockwise, so that the triangular block 45 respectively contacts the left triangular block 46 upward and the right triangular block 47 downward, and the left triangular block 46 and the right triangular block 47 respectively drive the rotating rod 42 to rotate, and the rotating rod 42 drives the dustproof plate 43 to rotate. When the triangular block 45 is released from contact, the dustproof plate 43 is reset by the torsion spring 44. The swing of the dustproof plate 43 helps to prevent impurities such as metal debris from adhering to the dustproof plate 43. Each time the dustproof plate 43 swings, the swing of the dustproof plate 43 will mobilize the surrounding airflow to shake off and blow away the attached debris, thereby keeping the dustproof plate 43 clean and the equipment operating normally.

[0036] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface treatment device for a slab, comprising a base (1), characterized in that: A driving motor (11) is fixedly mounted on the outer wall of the right end of the base (1), a rotating rod (12) is fixedly mounted on the output end of the driving motor (11), a transmission belt (13) is rotatably mounted on the outer wall of the rotating rod (12), an electric push rod (21) is fixedly mounted on the outer wall of the central end of the base (1), a telescopic rod (22) is fixedly mounted on the output end of the electric push rod (21), a fixing plate (23) is fixedly mounted on the top of the telescopic rod (22), an outer frame (24) is fixedly mounted on the top of the fixing plate (23), a rotating machine (25) is fixedly mounted on the outer wall of the right end of the outer frame (24), a rotating rod (26) is fixedly mounted on the output end of the rotating machine (25), a grinding roller (27) is fixedly mounted on the outer wall of the rotating rod (26), a centering device (3) for centering a slab is provided on the inner wall of the base (1), and a dustproof device (4) for preventing flying dust is provided on the outer wall of the outer frame (24).

2. The surface treatment equipment for a slab according to claim 1, characterized in that: The centering device (3) comprises a sliding frame (31), a spring sheet (32), a rotating short rod (33) and a roller (34); the sliding frame (31) penetrates and is slidably mounted on the inner wall of the base (1); the spring sheet (32) is mounted between the sliding frame (31) and the base (1); the rotating short rod (33) is rotatably mounted on the inner wall of the sliding frame (31); and the roller (34) is mounted on the outer wall of the rotating short rod (33).

3. The surface treatment equipment for a slab according to claim 2, characterized in that: The number of the sliding frames (31) is two, and the left ends of the two sliding frames (31) are arranged with inclined surfaces, the spring sheet (32) is fixedly connected to the outer wall of the sliding frame (31) close to the base (1), the number of the rotating short rods (33) is several, and the several rotating short rods (33) are evenly and equidistantly fixedly installed on the inner wall of the sliding frame (31).

4. The surface treatment equipment for a slab according to claim 3, characterized in that: The centering device (3) further comprises a T-shaped centering plate (35), a rotating column (36), a transmission bar (37) and a contact block (38); the T-shaped centering plate (35) is slidably mounted on the inner wall of the sliding frame (31); the rotating column (36) is rotatably mounted on the inner wall of the sliding frame (31) close to the right side wall of the T-shaped centering plate (35); the transmission bar (37) is rotatably mounted on the outer walls of the rotating column (36) and the rotating short rod (33) respectively; and the contact block (38) is mounted on the outer wall at the top end of the rotating column (36).

5. The surface treatment equipment for a slab according to claim 4, characterized in that: The number of the T-shaped center plates (35) is several, the abutment block (38) is fixedly connected to the outer wall of the top end of the rotating column (36), the number of the abutment blocks (38) is several, and the several abutment blocks (38) are respectively in contact with the back surfaces of the several T-shaped center plates (35).

6. The surface treatment equipment for a slab according to claim 5, characterized in that: The dustproof device (4) comprises a long frame (41), a rotating rod (42), a dustproof plate (43) and a torsion spring (44); the long frame (41) is mounted on the outer wall of the outer frame (24); the rotating rod (42) is rotatably mounted on the inner wall of the long frame (41); the dustproof plate (43) is mounted on the outer wall of the rotating rod (42); and the torsion spring (44) is arranged between the outer walls of the long frame (41) and the rotating rod (42).

7. The surface treatment equipment for a slab according to claim 6, characterized in that: The number of the long frames (41) is two, and the two long frames (41) are fixedly connected to the outer wall of the outer frame (24), and the dustproof plate (43) is fixedly connected to the outer wall of the rotating rod (42).

8. The surface treatment equipment for a slab according to claim 7, characterized in that: The dustproof device (4) further comprises a triangular block (45), a left triangular block (46) and a right triangular block (47); the triangular block (45) is mounted on the outer wall of the rotating rod (26); the left triangular block (46) is mounted on the outer wall of the rotating rod (42) on the left side of the outer frame (24); and the right triangular block (47) is mounted on the outer wall of the rotating rod (42) on the right side of the outer frame (24).

9. The surface treatment equipment for a slab according to claim 8, characterized in that: The number of the triangular blocks (45) is four, and two triangular blocks (45) form a group, and each group of triangular blocks (45) is fixedly mounted on the outer wall of the rotating rod (26), the left triangular block (46) is fixedly connected to the outer wall of the rotating rod (42) on the left side of the outer frame (24), and the right triangular block (47) is fixedly connected to the outer wall of the rotating rod (42) on the right side of the outer frame (24).

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