Pickling post-purging device for hot-rolled stainless steel strip

Abstract

The utility model discloses a post-pickling purging device for a hot-rolled stainless steel strip, which comprises a purging mechanism, and the purging mechanism comprises an air knife, an air pipe and a first bracket; the air knives are symmetrically arranged on the upper and lower surfaces of the stainless steel plate, the first brackets are arranged on two sides of the stainless steel plate, and rotating shafts are arranged at two ends of the air knives and rotationally connected with the first brackets; a fixing plate is arranged on one side of the first support, and an adjusting frame is arranged on one side of the fixing plate. Residual liquid on the surface of stainless steel can be blown and dried through the blowing mechanism, meanwhile, the angle of the air knife and the size of an air outlet of the air knife can be adjusted and controlled, the blowing angle and the air outlet pressure are changed, and the air knife achieves the optimal blowing effect; furthermore, the surface of the stainless steel can be wiped through a wiping mechanism on one side, felt cloth can be dried and further replaced in the state that the stainless steel plate is not stopped being conveyed, and the dryness and the adsorption effect are kept.

Description

Technical Field

[0001] This utility model belongs to the field of stainless steel rolling production technology, and specifically relates to a post-pickling purging device for hot-rolled stainless steel strip. Background Technology

[0002] After rolling, stainless steel sheets undergo pickling to remove surface oxide residue. After pickling, any remaining acid is removed, typically by squeezing with a squeeze roller or by spray rinsing. When using spray rinsing, the spray water is cleaned up in subsequent processes by blowing, adsorption, or drying to keep the stainless steel sheet dry.

[0003] After searching, the existing technical announcement number CN218532013U describes a high-pressure rinsing and drying line for stainless steel plates. The openings in the high-pressure pipeline can output high-pressure air to both ends of the stainless steel plate. The high-pressure air can accelerate the airflow on the surface of the stainless steel plate, causing the liquid on the surface of the stainless steel plate to evaporate. Furthermore, a high-pressure fan is installed at the top of the drying chamber, and a connecting pipe is installed on one side of the high-pressure fan. A diamond-shaped air duct is installed at the bottom of the connecting pipe, and air blowing pipes are installed on both sides of the air duct. The bottom ends of the two air blowing pipes are positioned opposite each other. The airflow enters from the diamond-shaped air duct and passes through a sufficiently large acceleration space, allowing the airflow to gain greater speed and quickly dry the surface of the stainless steel plate through the air blowing pipes.

[0004] The airflow direction, range, and speed of the air duct and diamond-shaped pipe are fixed. Therefore, the purging effect is the same for stainless steel plates of different specifications. When there is a lot of cleaning liquid left on the stainless steel plate, it is not possible to change the airflow speed and airflow angle for targeted purging, nor can the airflow be reduced to save resources when there is little residual cleaning liquid.

[0005] The existing technology announcement number CN219483516U describes a stainless steel surface treatment device. When the stainless steel plate passes through the inside of the ring frame, the squeegee strips on the upper and lower sides can scrape off the water remaining on the surface of the stainless steel plate. Then, the nozzles on the upper and lower sides can blow hot air onto the upper and lower sides of the stainless steel plate respectively, thereby drying the stainless steel plate. In this solution, the ring frame, ring cavity, and nozzles are also fixed and cannot be adjusted or controlled, and the air volume, air direction, and air speed cannot be adjusted or controlled. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a post-pickling purging device for hot-rolled stainless steel strip. This device can purge and dry residual liquid on the stainless steel surface through a purging mechanism. Simultaneously, it can adjust and control the angle and outlet size of the air knife, changing the purging angle and outlet pressure to achieve the best purging effect. Furthermore, it can also wipe the stainless steel surface through a wiping mechanism on one side, where the felt cloth can be dried and replaced without stopping the stainless steel plate's transmission, maintaining dryness and adsorption effect.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A post-pickling purging device for hot-rolled stainless steel strip includes a purging mechanism comprising air knives, air ducts, and a first support. A pair of air knives are symmetrically arranged on the upper and lower surfaces of the stainless steel plate. The first support is located on both sides of the stainless steel plate. Rotary shafts are located at both ends of the air knives and are rotatably connected to the first support. Support arms are provided on the rotating shafts. A fixed plate is located on one side of the first support, and an adjusting frame is located on the other side of the fixed plate. A guide shaft is located on the adjusting frame and is slidably connected to the fixed plate. A first electric push rod is located on the fixed plate, and its top shaft is fixedly connected to the adjusting frame. A pin is located on the support arm within the adjusting frame. An air duct connected to the air knives via a flexible pipe is provided. Both ends of the air duct are fixed to the first support, and one end of the air duct is connected to an external drying gas supply system.

[0009] Preferably, the air knife has symmetrically arranged adjustment plates inside, with both ends of the adjustment plates rotatably connected to the side walls of the air knife. The adjustment plates have hinged connecting rods, with one end of the connecting rod having a hinged support shaft. Both ends of the support shaft abut against the side walls of the air knife. The top of the air knife has a second electric push rod, with the top shaft of the second electric push rod located inside the air knife and connected to the support shaft.

[0010] Furthermore, a wiping mechanism is provided on one side of the blowing mechanism. A pair of wiping mechanisms are symmetrically arranged on the upper and lower sides of the stainless steel plate. The wiping mechanism includes a roller, a support plate, a felt cloth, a motor, a spring, and a second bracket. The second bracket is located on both sides of the stainless steel plate. The roller has sealing plates fixed at both ends by bolts, and connecting pipes are provided on the sealing plates, which are rotatably connected to the second bracket. The roller has a through groove with openings at both ends. The support plate is located within the through groove and is hollow. Limiting shafts are provided at both ends of the support plate to prevent it from slipping off the roller. Springs are located on both sides of the support plate, and the springs contact the roller and the support plate. The felt cloth has fastening strips that slide and insert into the support plate for installation and fixation. The connecting pipe at one end of the roller is connected to an external drying air supply system, and a sprocket is provided on the connecting pipe at the other end. The motor is fixed to the second bracket via a motor mount, and a sprocket is provided at the motor shaft end, connected to the sprocket on the connecting pipe via a chain. The motor drives the roller to rotate, enabling the alternating replacement of the felt cloth.

[0011] Preferably, the connecting pipe at the other end of the roller is provided with a mesh plate to reduce the speed at which hot air is blown out of the roller, so that the roller can be heated and the felt can be dried.

[0012] Preferably, the second bracket is provided with a third electric actuator, the top shaft of the third electric actuator passes through the second bracket, and the end of the top shaft of the third electric actuator is provided with an insert block that can prevent the roller from rotating and maintain stability by controlling the insertion slot.

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] 1) First, the surface of the stainless steel plate is purged by the purging mechanism. Air is introduced through the air duct and the external air supply system. The air knife purifies the surface of the stainless steel plate. The first electric push rod pushes the adjustment frame to move along the guide shaft. Then, the adjustment frame pushes the pin to move inside the adjustment frame, thereby driving the support arm and the air knife to rotate around the pivot. This allows the purging angle of the air knife to be controlled and changed so that it completes the purging process at the optimal angle, blowing away the residual liquid on the stainless steel plate. In addition, the purging air is high-temperature drying air, which is conducive to the evaporation and drying of the liquid.

[0015] Furthermore, the air knife is equipped with an adjustment plate, which can push the support shaft through the second electric actuator and drive the adjustment plate to open and close via the connecting rod, thereby adjusting the size of the air knife outlet. This allows control of the air knife outlet pressure and air speed, which can be adjusted according to the amount of liquid residue, greatly improving the blowing and drying effect.

[0016] 2) After purging, the stainless steel surface is wiped by a wiping mechanism. The spring pushes the support plate and the felt cloth against the stainless steel plate to wipe the surface of the stainless steel plate. The felt cloth can absorb residual liquid traces. When the felt cloth is saturated, the motor drives the roller to rotate and the support plate is replaced alternately. Then, the third electric push rod pushes the insertion slot of the plug to stabilize the roller and prevent it from rotating randomly. The spring pushing support plate method not only allows the felt cloth to adapt to the thickness of the stainless steel plate and keep it in contact with the stainless steel plate at all times, but also facilitates the replacement of the support plate.

[0017] 3) Furthermore, the connecting pipe connects to the roller to transmit drying air, and the other end of the connecting pipe is equipped with a mesh plate, which can reduce the speed at which hot air is blown out of the roller, creating a certain degree of drying air retention effect, so that the roller and the inside of the support plate can be heated and the felt cloth can be dried, maintaining the adsorption effect of the felt cloth; at the same time, when the felt cloth is highly worn, it can be pulled out and replaced according to the way the fastener is inserted into the support plate, maintaining the perfect adsorption state of the felt cloth. Attached Figure Description

[0018] Appendix Figure 1 This is a schematic diagram of a post-pickling purging device for hot-rolled stainless steel strip according to this utility model.

[0019] Appendix Figure 2 This is a schematic diagram of the wiping mechanism. Figure 1 ;

[0020] Appendix Figure 3 This is a schematic diagram of the wiping mechanism. Figure 2 ;

[0021] Appendix Figure 4 This is a schematic diagram of the roller structure;

[0022] Appendix Figure 5 This is a schematic diagram of the support plate structure;

[0023] Appendix Figure 6 This is a schematic diagram of the internal structure of the air blade. Figure 1 ;

[0024] Appendix Figure 7 This is a schematic diagram of the internal structure of the air blade. Figure 2 ;

[0025] In the diagram: 1. Blowing mechanism; 11. Air knife; 111. Rotating shaft; 112. Support arm; 113. Pin; 114. Fixing plate; 115. First electric push rod; 116. Adjusting frame; 117. Guide shaft; 12. Adjusting plate; 13. Support shaft; 14. Connecting rod; 15. Second electric push rod; 16. Air duct; 17. First bracket; 2. Wiping mechanism; 21. Roller; 211. Sealing plate; 212. Connecting pipe; 213. Through groove; 214. Mesh plate; 201. Groove; 202. Third electric push rod; 22. Support plate; 221. Limiting shaft; 23. Felt cloth; 231. Fastening strip; 24. Motor; 25. Spring; 26. Second bracket; 3. Stainless steel plate. Detailed Implementation

[0026] To facilitate understanding by those skilled in the art, the following is a detailed explanation in conjunction with the appendix. Figure 1-7 The technical solution of this utility model will be further described in detail below.

[0027] A post-pickling purging device for hot-rolled stainless steel strip includes a purging mechanism 1, which comprises air knives 11, air ducts 16, and a first support 17. A pair of air knives 11 are symmetrically arranged on the upper and lower surfaces of a stainless steel plate 3. The first support 17 is located on both sides of the stainless steel plate 3. Rotating shafts 111 are provided at both ends of the air knives 11 and rotatably connected to the first support 17. Support arms 112 are provided on the rotating shafts 111. A fixing plate 114 is provided on one side of the first support 17, and an adjusting frame is provided on one side of the fixing plate 114. 116, the adjusting frame 116 is provided with a guide shaft 117 and is slidably connected to a fixing plate 114. The fixing plate 114 is provided with a first electric push rod 115, and the top shaft of the first electric push rod 115 is fixedly connected to the adjusting frame 116. The support arm 112 is provided with a pin 113, which is located inside the adjusting frame 116. The air knife 11 is provided with an air duct 16 connected by a flexible pipe. Both ends of the air duct 16 are fixed on the first bracket 17, and one end of the air duct 16 is connected to the external drying air supply system.

[0028] The air knife 11 has symmetrically arranged adjustment plates 12 inside. The two ends of the adjustment plates 12 are rotatably connected to the side wall of the air knife 11. The adjustment plates 12 are provided with hinged connecting rods 14. One end of the connecting rods 14 is provided with a hinged support shaft 13. The two ends of the support shaft 13 touch the side wall of the air knife 11. The top of the air knife 11 is provided with a second electric push rod 15. The top shaft of the second electric push rod 15 is located inside the air knife 11 and is connected to the support shaft 13.

[0029] A wiping mechanism 2 is provided on one side of the blowing mechanism 1. The wiping mechanism 2 is provided in pairs and symmetrically arranged on the upper and lower sides of the stainless steel plate 3. The wiping mechanism includes a roller 21, a support plate 22, a felt cloth 23, a motor 24, a spring 25, and a second bracket 26. The second bracket 26 is located on both sides of the stainless steel plate 3. The roller 21 has a sealing plate 211 fixed at both ends by bolts. The sealing plate 211 has a connecting pipe 212, which is rotatably connected to the second bracket 26. The roller 21 has a through groove 213 with slots 201 at both ends. The support plate 22 is located in the through groove 213. The support plate 22 is hollow. The support plate 22 has a limiting shaft 221 at both ends to prevent the support plate 22 from slipping out of the roller 21. The spring 25 is located on both sides of the support plate 22 and touches the roller 21 and the support plate 22. The felt cloth 23 has a fastening strip 231, which is slidably inserted into the support plate 22 to achieve installation and fixation.

[0030] The connecting pipe 212 at one end of the roller 21 is connected to the external drying air supply system. A sprocket is provided on the connecting pipe 212 at one end. The motor 24 is fixed on the second bracket 26 through the motor base. The shaft end of the motor 24 is provided with a sprocket and is connected to the sprocket on the connecting pipe 212 through a chain. The motor 24 drives the roller 21 to rotate to realize the alternating replacement of the felt cloth 23.

[0031] The connecting pipe 212 at the other end of the roller 21 is equipped with a mesh plate 214, which can reduce the speed at which hot air is blown out of the roller 21, so that the roller 21 can be heated and the felt 23 can be dried.

[0032] The second bracket 26 is provided with a third electric actuator 202. The top shaft of the third electric actuator 202 passes through the second bracket 26. The end of the top shaft of the third electric actuator 202 is provided with a plug that can prevent the roller 21 from rotating and maintain stability by controlling the plug slot 201.

[0033] In the description of this utility model, unless otherwise stated, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In summary, the electronic or electrical components, including but not limited to electric actuators and motors, are existing components that are custom-made or purchased. The electrical connections between these components are conventional circuit or electrical connections in the prior art and are not within the scope of protection of this invention.

[0035] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A post-pickling purging device for hot-rolled stainless steel strip, comprising a purging mechanism, characterized in that... The purging mechanism includes an air knife, an air duct, and a first support. A pair of air knives are symmetrically arranged on the upper and lower sides of a stainless steel plate. The first support is located on both sides of the stainless steel plate. The air knives have rotating shafts at both ends that are rotatably connected to the first support. Each rotating shaft has a support arm. A fixed plate is located on one side of the first support, and an adjusting frame is located on the other side of the fixed plate. A guide shaft is located on the adjusting frame and slidably connected to the fixed plate. A first electric push rod is located on the fixed plate, and its top shaft is fixedly connected to the adjusting frame. A pin is located on the support arm within the adjusting frame. An air duct connected to the air knife via a flexible pipe is located on the air knife. Both ends of the air duct are fixed to the first support, and one end of the air duct is connected to an external drying gas supply system. The air knife has symmetrically arranged adjustment plates inside. The two ends of the adjustment plates are rotatably connected to the side wall of the air knife. The adjustment plates are provided with hinged connecting rods. One end of the connecting rod is provided with a hinged support shaft. The two ends of the support shaft touch the side wall of the air knife. The top of the air knife is provided with a second electric push rod. The top shaft of the second electric push rod is located inside the air knife and connected to the support shaft.

2. The post-pickling purging device for hot-rolled stainless steel strip according to claim 1, characterized in that... A wiping mechanism is provided on one side of the blowing mechanism. A pair of wiping mechanisms are symmetrically arranged on the upper and lower sides of the stainless steel plate. Each wiping mechanism includes a roller, a support plate, a felt cloth, a motor, a spring, and a second bracket. The second bracket is located on both sides of the stainless steel plate. The roller has sealing plates at both ends, fixed with bolts. Connecting pipes are installed on the sealing plates, rotatably connecting to the second bracket. The roller has a through groove with openings at both ends. The support plate is located within the through groove and is hollow. Limiting shafts at both ends of the support plate prevent it from slipping off the roller. Springs are located on both sides of the support plate, contacting both the roller and the support plate. The felt cloth has fastening strips that slide and insert into the support plate for installation and fixation. A connecting pipe at one end of the roller connects to an external drying air supply system. A sprocket is installed on the connecting pipe at the other end. The motor is fixed to the second bracket via a motor mount. A sprocket is located at the motor shaft end and connected to the sprocket on the connecting pipe via a chain. The motor drives the roller to rotate, allowing for the alternating replacement of the felt cloth.

3. A post-pickling purging device for hot-rolled stainless steel strip according to claim 2, characterized in that... The connecting pipe at the other end of the roller is equipped with a mesh plate, which can reduce the speed at which hot air is blown out of the roller, so that the roller can be heated and the felt cloth can be dried.

4. A post-pickling purging device for hot-rolled stainless steel strip according to claim 2, characterized in that... The second bracket is equipped with a third electric actuator. The top shaft of the third electric actuator passes through the second bracket. The end of the top shaft of the third electric actuator is equipped with a plug that can prevent the roller from rotating and maintain stability by controlling the plug slot.

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