Pickling equipment for stainless steel strip production

Abstract

The present application relates to stainless steel strip production technical field, especially stainless steel strip production with pickling equipment.The present application provides a kind of stainless steel strip production with pickling equipment for the full development of stainless steel strip to carry out acid pickling liquid spraying.A kind of stainless steel strip production with pickling equipment, including pickling tank, further including lifting support, guide roller a, guide roller b and stop block, lifting support is located in pickling tank, lifting support is provided with rotatable guide roller a, guide roller b is at different height with guide roller a, stop block is arranged in pickling tank, stop block can contact and push guide roller b and move upwards.Lifting support and the guide roller a and guide roller b connected by setting have, when lifting support is lifted upwards, stainless steel strip can conveniently pass between guide roller a and guide roller b, after lifting support is reset downwards, guide roller b can thus contact and push stainless steel strip and be bent, so that acid pickling liquid is sprayed without dead angle on the surface of stainless steel strip.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stainless steel strip production, and particularly relates to a pickling equipment for stainless steel strip production. BACKGROUND

[0002] Stainless steel pickling is a process of using acid solution to treat the surface of stainless steel, removing the oxide layer, welding slag and dust and other impurities on the surface of stainless steel through chemical reaction of acid, so that the surface of stainless steel reaches a certain smoothness and flatness, and its corrosion resistance and aesthetic appearance are improved. In the stainless steel manufacturing industry, pickling can remove the oxide layer on the surface of stainless steel, improve the manufacturing efficiency and product quality.

[0003] The existing pickling treatment of stainless steel strip is to place the stainless steel strip in pickling solution, and then spray the pickling solution to the surface of the stainless steel strip for pickling. The contact speed of the stainless steel strip with the pickling solution is accelerated by adjusting the direction and flow rate of the spray pipe, and the pickling speed is accelerated. However, in actual pickling, the traditional flushing method for pickling the surface of the stainless steel strip has a blind area, which leads to incomplete removal of the oxide layer on the surface of the stainless steel strip. Therefore, the present application aims to design a pickling equipment for stainless steel strip production which can fully expand the stainless steel strip and spray pickling solution. SUMMARY

[0004] In order to overcome the shortcomings of the traditional method of flushing pickling solution on the surface of the stainless steel strip, which has a pickling blind area and leads to incomplete pickling, the present application provides a pickling equipment for stainless steel strip production which can fully expand the stainless steel strip and spray pickling solution.

[0005] The acid pickling equipment for stainless steel strip production comprises an acid pickling tank, a liquid tank, a spray pipe, a recovery pump, an inlet roller and an outlet roller, the liquid tank is connected with the spray pipe, the spray pipe is arranged on the inner side of the acid pickling tank, the recovery pump is connected to the inner wall of the acid pickling tank, the recovery pump can guide the acid pickling liquid in the acid pickling tank back to spray, thereby assisting the acid pickling and improving the utilization rate of the acid pickling liquid, the acid pickling tank is provided with the inlet roller and the outlet roller on the opposite side, which are used for guiding the stainless steel strip, and the acid pickling equipment further comprises a lifting support, a guide rod, a guide roller a, a guide roller b and a stopper, the lifting support is located in the acid pickling tank, the lifting support is horizontally arranged and provided with three rotatable guide rollers a, two groups of guide rods are symmetrically arranged on the lifting support, the guide roller b is slidably connected in the guide rod and connected with the spring therebetween, the guide roller b is at different heights from the guide roller a, the acid pickling tank is provided with the stopper, the stopper can contact and push the guide roller b to move upward, the lifting support is lifted upward to separate the guide roller b from the stopper, the guide roller b is staggered below the guide roller a under the action of the spring, the stainless steel strip is transversely arranged through the guide rollers a and b, then the lifting support is moved downward into the acid pickling tank, the guide roller b moves upward under the blocking action of the stopper, at this time, the guide roller b pushes the stainless steel strip to be bent, thereby the time of the stainless steel strip in the acid pickling tank can be prolonged, and the bent stainless steel strip can receive the acid pickling liquid sprayed by the spray pipe at multiple angles, thereby reducing the acid pickling blind area.

[0006] Optionally, the acid pickling equipment further comprises a positioning rod, the positioning rod is vertically fixed to the bottom surface of the acid pickling tank, and the positioning rod can pass through the lifting support and limit and fix the lifting support.

[0007] Optionally, the acid pickling equipment further comprises a polishing support, a polishing roller, a motor and a transmission assembly, the polishing support is arranged on the acid pickling tank and specifically located in front of the inlet roller, the polishing roller is rotatably connected to the polishing support, the polishing roller is composed of two vertical rollers, the motor is connected to the side surface of the polishing support through a support, and the motor drives the polishing roller to rotate in the same direction through the transmission assembly, the same direction rotation of the polishing roller can pre-clean the surface of the stainless steel strip, thereby removing the rust and impurities on the surface of the stainless steel strip and improving the contact reaction rate of the subsequent acid pickling liquid and the surface of the stainless steel strip.

[0008] Optionally, the transmission assembly is composed of four vertical gears that are sequentially engaged, the four gears are respectively connected to the output shaft of the motor, the end of the lower polishing roller, the polishing support and the end of the upper polishing roller, and the lower polishing roller is driven to rotate by turning on the motor, and the lower polishing roller drives the upper polishing roller to rotate in the same direction through the transmission assembly.

[0009] Optionally, the acid pickling equipment further comprises a buckle, the polishing support is arranged in a hinge type rotary expansion structure to limit the polishing roller, the polishing support is limited and fixed through the buckle, and the buckle provides a convenient way to replace the polishing roller.

[0010] Optionally, the cleaning support, the reciprocating screw rod, the belt and the brush are further included, the cleaning support is fixedly connected to the pickling tank, and specifically located between the polishing support and the leading roller; the reciprocating screw rod is rotatably connected to the upper portion of the cleaning support; the polishing roller is driven by the belt to drive the reciprocating screw rod; and the brush is connected to the reciprocating screw rod by screwing and is slidingly limited by the cross bar.

[0011] Optionally, the contact rod is further included, which is transversely fixedly connected to the side of the cleaning support and can be in frictional contact with the brush.

[0012] Optionally, the rack, the winding wheel, the pull rope and the telescopic plate are further included, the rack is transversely connected to the brush, the winding wheel is rotatably arranged on the upper portion of the cleaning support and above the contact rod, the telescopic plate is connected to the cleaning support by the support, the telescopic plate can isolate the stainless steel belt from the contact rod, the winding wheel is connected to the telescopic plate by the pull rope, the gear is connected to the rotating shaft of the winding wheel by the key, and when the brush is cleaned by the contact rod, the rack can drive the winding wheel to rotate by being in contact with and engaging the gear, the winding wheel can pull the telescopic plate to expand, and the telescopic plate can prevent the metal debris falling from the brush from falling onto the surface of the stainless steel belt.

[0013] Optionally, the liquid removing support and the scraper are further included, the liquid removing support is fixedly connected to the pickling tank and specifically located in front of the leading-out roller, and the scraper is oppositely arranged and slidingly connected to the middle portion of the liquid removing support, the stainless steel belt is guided to leave the pickling tank by the leading-out roller, then passes through the middle portion of the liquid removing support, and then the residual pickling liquid drops on the surface of the stainless steel belt are scraped off by the scraper.

[0014] Optionally, the fixed support and the water absorbing roller are further included, the fixed support is arranged between the liquid removing support and the leading-out roller, the water absorbing roller is rotatably connected to the fixed support, the water absorbing roller is made of a hydrophilic material, and the water absorbing roller can wipe and dry the surface of the passing stainless steel belt.

[0015] The present application has the following advantages:

[0016] 1. The lifting support, the guide roller a and the guide roller b connected thereto are arranged, the stainless steel belt can conveniently pass between the guide roller a and the guide roller b when the lifting support is lifted upward, the guide roller b can contact and push the stainless steel belt to be bent after the lifting support is reset downward, the pickling liquid can be sprayed on the surface of the stainless steel belt without dead angle, the pickling time of the stainless steel belt in the pickling tank is greatly prolonged, the pickling quality of the pickling liquid on the surface of the stainless steel belt is improved, and the problems of incomplete pickling and pickling blind area in the prior art are avoided.

[0017] 2、The surface of the stainless steel belt is pre-cleaned by the polishing roller, and a reciprocating brush is arranged to sweep the metal debris and dust on the surface of the stainless steel belt, when the contact rod drives the brush to clean, the rack drives the winding wheel to rotate and the extension plate is expanded by the pull rope, the extension plate can isolate the debris swept by the contact rod to prevent the debris from falling on the surface of the stainless steel belt again, so that the pickling quality of the subsequent pickling liquid can be improved.

[0018] 3、The scraper and the water suction roller can wipe and dry the stainless steel belt, facilitating subsequent processing of the stainless steel belt. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic diagram of the present application.

[0020] Figure 2 It is a three-dimensional structure schematic diagram of the pickling tank, liquid tank, spray pipe, guide-in roller and guide-out roller of the present application.

[0021] Figure 3 It is a three-dimensional structure schematic diagram of the lifting support, guide roller a and guide roller b of the present application.

[0022] Figure 4 It is a three-dimensional structure schematic diagram of the lifting support in the lifting state of the present application.

[0023] Figure 5 It is a three-dimensional structure schematic diagram of the motor and the polishing roller of the present application.

[0024] Figure 6 It is a three-dimensional structure schematic diagram of the reciprocating screw rod and the brush of the present application.

[0025] Figure 7 It is a three-dimensional structure schematic diagram of the contact rod, winding wheel and extension plate of the present application.

[0026] Figure 8 It is a three-dimensional structure schematic diagram of the liquid removal support and the scraper of the present application.

[0027] Figure 9 It is a three-dimensional structure schematic diagram of the fixed support and the water suction roller of the present application.

[0028] The meanings of the labels in the attached diagram are as follows: 1: Pickling tank, 2: Liquid tank, 3: Spray nozzle, 4: Recovery pump, 5: Inlet roller, 6: Outlet roller, 7: Lifting bracket, 701: Guide rod, 8: Guide roller a, 9: Guide roller b, 901: Spring, 10: Stop block, 11: Positioning rod, 12: Grinding bracket, 13: Grinding roller, 14: Motor, 15: Transmission assembly, 16: Buckle, 17: Cleaning bracket, 18: Reciprocating screw, 19: Belt, 20: Brush, 21: Contact rod, 22: Rack, 23: Winding wheel, 24: Pull rope, 25: Telescopic plate, 26: Liquid removal bracket, 2601: Scraper, 27: Fixed bracket, 28: Water suction roller. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0030] Example: A pickling equipment for stainless steel strip production, such as... Figures 1-4 As shown, the system includes a pickling tank 1, a liquid tank 2, a spray pipe 3, a recovery pump 4, an inlet roller 5, and an outlet roller 6. The liquid tank 2 is connected to the spray pipe 3, which is located on the inner side of the pickling tank 1. The recovery pump 4 is connected to the inner wall of the pickling tank 1 and can guide the pickling solution in the pickling tank 1 back for spraying, thereby assisting pickling and improving the utilization rate of the pickling solution. The inlet roller 5 and outlet roller 6 are arranged on opposite sides of the pickling tank 1 to guide the stainless steel strip. The system also includes a lifting bracket 7, guide rods 701, guide rollers a8, guide rollers b9, and a stop block 10. The lifting bracket 7 is located inside the pickling tank 1. Three rotatable guide rollers a8 are arranged horizontally on the lifting bracket 7. Two sets of guide rods 701 are symmetrically arranged on the lifting bracket 7. The guide rollers b9 are slidably connected to the guide rods 701. A spring 901 connects the guide rollers b9 and a8, which are at different heights. A stop block 10 is installed inside the pickling tank 1. The stop block 10 can contact and push the guide roller b9 upward. In this embodiment, a gantry frame is used to lift the lifting support 7 upward until the guide roller b9 is separated from the stop block 10. Under the action of the spring 901, the guide roller b9 is staggered below the guide roller a8. The stainless steel strip is passed horizontally through the guide roller a8 and the guide roller b9. Then the lifting support 7 is moved downward into the pickling tank 1. The guide roller b9 moves upward under the obstruction of the stop block 10. At this time, the guide roller b9 will push the stainless steel strip to bend, thereby increasing the travel time of the stainless steel strip in the pickling tank 1 and receiving the pickling liquid sprayed by the nozzle 3 at multiple angles after bending, reducing the pickling blind zone. It also includes a positioning rod 11, which is vertically fixed to the bottom surface of the pickling tank 1. The positioning rod 11 can pass through the lifting support 7 and limit and fix it.

[0031] As Figure 1 and Figure 5 shown, it also includes polishing support 12, polishing roller 13, motor 14 and transmission assembly 15, polishing support 12 is arranged on pickling tank 1, specifically located in front of guide roller 5, polishing roller 13 is rotatably connected to polishing support 12, polishing roller 13 is composed of two vertical rollers, motor 14 is connected to the side of polishing support 12 through a support, motor 14 drives polishing roller 13 to rotate in the same direction through transmission assembly 15, transmission assembly 15 is composed of four vertical gears meshing one by one, the four gears are connected to the output shaft of motor 14, the end of lower polishing roller 13, polishing support 12 and the end of upper polishing roller 13 respectively, turning on motor 14 drives lower polishing roller 13 to rotate, lower polishing roller 13 drives upper polishing roller 13 to rotate in the same direction through transmission assembly 15, setting polishing roller 13 to rotate in the same direction can pre-clean the surface of stainless steel strip, so as to remove rust and impurities on the surface of stainless steel strip and improve the reaction rate of subsequent pickling solution and stainless steel strip surface.

[0032] As Figure 5 shown, it also includes buckle 16, polishing support 12 is arranged as a hinged rotating and unfolding structure to limit polishing roller 13, buckle 16 is used to limit and fix polishing support 12, providing a convenient way to replace polishing roller 13.

[0033] As Figure 1 and Figure 6 shown, it also includes cleaning support 17, reciprocating screw 18, belt 19 and brush 20, cleaning support 17 is fixedly connected to pickling tank 1, specifically located between polishing support 12 and guide roller 5, reciprocating screw 18 is rotatably connected to the upper part of cleaning support 17, polishing roller 13 drives reciprocating screw 18 through belt 19, brush 20 is connected to reciprocating screw 18 through threaded connection and is slidingly limited by a cross bar, metal debris is inevitably left on the surface of stainless steel strip after polishing by polishing roller 13, and brush 20 is driven to move reciprocally when polishing roller 13 drives reciprocating screw 18 to rotate, brush 20 can clean the metal debris on the surface of polished stainless steel strip, further ensuring the cleanliness of stainless steel surface and improving the pickling quality.

[0034] As Figure 7As shown, it further comprises a contact rod 21, a rack 22, a winding wheel 23, a pull rope 24 and an expansion plate 25, the contact rod 21 is transversely fixed on the side of the cleaning support 17, the contact rod 21 can be in frictional contact with the brush 20, the rack 22 is transversely connected on the brush 20, the winding wheel 23 is rotatably arranged on the upper part of the cleaning support 17 and above the contact rod 21, the expansion plate 25 is connected on the cleaning support 17 through a support, the expansion plate 25 can isolate the stainless steel belt from the contact rod 21, the winding wheel 23 is connected with the expansion plate 25 through the pull rope 24, a gear is connected on the rotating shaft of the winding wheel 23 through a key, when the brush 20 is cleaned by the contact rod 21, the rack 22 can drive the winding wheel 23 to rotate by contacting and engaging the gear, the winding wheel 23 will pull the expansion plate 25 to expand, and the expansion plate 25 can prevent the metal debris falling from the brush 20 from floating to the surface of the stainless steel belt.

[0035] As shown in Figure 1 and Figure 8 As shown, it further comprises a liquid removing support 26 and a scraper 2601, the liquid removing support 26 is fixed on the pickling tank 1 and specifically located in front of the leading-out roller 6, the scraper 2601 is oppositely arranged and slidingly connected in the middle part of the liquid removing support 26, after the stainless steel belt is guided to leave the pickling tank 1 by the leading-out roller 6, it will pass through the middle part of the liquid removing support 26 and then the residual pickling liquid drops on the surface of the stainless steel belt will be scraped off by the scraper 2601.

[0036] As shown in Figure 1 and Figure 9 As shown, it further comprises a fixed support 27 and a water absorbing roller 28, the fixed support 27 is arranged between the liquid removing support 26 and the leading-out roller 6, the water absorbing roller 28 is rotatably connected on the fixed support 27, the water absorbing roller 28 is made of hydrophilic material, and the water absorbing roller 28 can wipe and dry the surface of the passing stainless steel belt.

[0037] The working principle of the embodiment of the present application is as follows: the stainless steel belt is passed between the polishing rollers 13, and then guided by the guide-in roller 5. In this embodiment, the gantry drives the lifting support 7 to lift upwards. At this time, the guide rollers a 8 and the guide rollers b 9 on the lifting support 7 are in a W shape, that is, the three guide rollers a 8 are higher than the guide rollers b 9 arranged at intervals. The stainless steel belt is horizontally passed through the guide rollers a 8 and the guide rollers b 9, and then sequentially passes through the liquid removal support 26 and the water absorption roller 28, and finally is pulled out by the guide-out roller 6 to the next process. The lifting support 7 is controlled to move downwards into the pickling tank 1. The positioning rod 11 is used to accurately position the lifting support 7, thereby improving the stability of the lifting support 7. During this period, the stop block 10 blocks the guide rollers b 9, so that the guide rollers b 9 move upwards and can contact and push the stainless steel belt to bend. Finally, the stainless steel belt is in an M shape between the guide rollers a 8 and the guide rollers b 9. By winding the stainless steel belt, the stainless steel belt can be fully contacted with the pickling liquid, thereby greatly improving the pickling time of the stainless steel belt in the pickling tank 1, improving the pickling quality of the pickling liquid on the surface of the stainless steel belt, avoiding the incomplete pickling and the existence of the pickling blind area of the existing device, and removing the metal scraps and impurities on the surface of the stainless steel belt by the polishing roller 13 during the period when the stainless steel belt enters the pickling tank 1. The reciprocating brush 20 is used to remove the scraps, thereby improving the subsequent pickling quality. The contact rod 21 is used to move the brush 20 during reciprocation, thereby cleaning the dust and scraps attached to the brush 20. The extension plate 25 can be simultaneously slid and expanded, thereby preventing the dust from adhering to the surface of the stainless steel belt again. When the stainless steel belt is in the pickling tank 1, the spray pipe 3 uniformly sprays the pickling liquid in the liquid tank 2 on the surface of the stainless steel belt. When the stainless steel belt is guided out by the guide-out roller 6, the scraper 2601 can scrape the pickling liquid drops attached to the surface of the stainless steel belt, and then the water absorption roller 28 is used to wipe and dry the stainless steel belt.

[0038] Although the present application is described in detail with reference to the above embodiments, it is obvious to those skilled in the art that various changes or modifications can be made to the present application without departing from the principles and spirit of the application defined in the claims. Therefore, the detailed description of the embodiments of the present application is only used for explanation, but not for limitation of the present application, and the protection scope is defined by the content of the claims.

Claims

1. A pickling device for stainless steel strip production, comprising a pickling tank (1), characterized in that: It also includes a lifting bracket (7), a guide rod (701), a guide roller a (8), a guide roller b (9), and a stop (10). The lifting bracket (7) is located inside the pickling tank (1). The lifting bracket (7) is equipped with a rotatable guide roller a (8). The lifting bracket (7) is equipped with a guide rod (701). The guide roller b (9) is slidably connected inside the guide rod (701) and a spring (901) connects the two. The guide roller b (9) and the guide roller a (8) are at different heights. A stop is provided inside the pickling tank (1). (10), the stop (10) can contact and push the guide roller b (9) to move upward, the lifting bracket (7) is raised upward until the guide roller b (9) is separated from the stop (10), the guide roller b (9) is staggered below the guide roller a (8), the stainless steel strip is passed horizontally through the guide roller a (8) and the guide roller b (9), and then the lifting bracket (7) is moved downward into the pickling tank (1), the guide roller b (9) moves upward under the blocking action of the stop (10), at this time the guide roller b (9) will push the stainless steel strip to bend; It also includes a grinding bracket (12), a grinding roller (13), a motor (14) and a transmission assembly (15). The grinding bracket (12) is set on the pickling tank (1), the grinding roller (13) is rotatably connected to the grinding bracket (12), and the motor (14) drives the grinding roller (13) to rotate in the same direction through the transmission assembly (15). It also includes a cleaning bracket (17), a reciprocating screw (18), a belt (19) and a brush (20). The cleaning bracket (17) is fixed to the pickling tank (1). The upper part of the cleaning bracket (17) is rotatably connected to the reciprocating screw (18). The grinding roller (13) drives the reciprocating screw (18) through the belt (19). The brush (20) is connected to the reciprocating screw (18) by a threaded connection and is slidably limited by a crossbar. It also includes a contact rod (21), which is laterally fixed to the side of the cleaning bracket (17) and can make frictional contact with the brush (20); It also includes a rack (22), a winding wheel (23), a pull rope (24), and a telescopic plate (25). The rack (22) is horizontally connected to the brush (20). The winding wheel (23) is rotatably mounted on the upper part of the cleaning bracket (17). The telescopic plate (25) is connected to the cleaning bracket (17) through the bracket. The telescopic plate (25) can isolate the stainless steel strip from the contact rod (21). The winding wheel (23) is connected to the telescopic plate (25) through the pull rope (24). The shaft of the winding wheel (23) is connected to a gear through a key. When the brush (20) is cleaned by the contact rod (21), the rack (22) can drive the winding wheel (23) to rotate by contacting and meshing the gear. The winding wheel (23) will pull the telescopic plate (25) to unfold. The telescopic plate (25) can prevent metal debris falling from the brush (20) from falling onto the surface of the stainless steel strip.

2. The pickling equipment for stainless steel strip production according to claim 1, characterized in that: It also includes a positioning rod (11), which is vertically fixed to the bottom surface of the pickling tank (1). The positioning rod (11) can pass through the lifting bracket (7) and limit and fix it.

3. The pickling equipment for stainless steel strip production according to claim 2, characterized in that: The transmission assembly (15) consists of four gears arranged vertically and meshing one by one. The four gears are respectively connected to the output shaft of the motor (14), the end of the lower grinding roller (13), the grinding bracket (12), and the end of the upper grinding roller (13).

4. The pickling equipment for stainless steel strip production according to claim 3, characterized in that: It also includes a buckle (16), and the grinding bracket (12) is configured as a hinged rotating unfolding structure to limit the grinding roller (13).

5. A pickling device for stainless steel strip production according to claim 1, characterized in that: It also includes a liquid removal bracket (26) and a scraper (2601). The liquid removal bracket (26) is fixed to the pickling tank (1), and the scraper (2601) is arranged opposite to each other and slidably connected to the middle of the liquid removal bracket (26).

6. A pickling device for stainless steel strip production according to claim 5, characterized in that: It also includes a fixed bracket (27) and a water-absorbing roller (28). The fixed bracket (27) is set on the liquid removal bracket (26), and the water-absorbing roller (28) is rotatably connected to the fixed bracket (27).

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