Multistage treatment device for residual dirty marks on surface of wide-band stainless steel band

Abstract

The utility model discloses a multi-stage treatment device for residual dirty marks on the surface of a wide-band stainless steel strip, which is characterized in that the inner side of a shell is divided into three areas, namely a pickling area, a clear water rinsing area and a drying area through two partition plates, and the steel strip is firstly fed forwards into the pickling area, the clear water rinsing area and the drying area through a guide assembly to be matched; the steel belt is moved and conveyed to the position between the two vertically opposite acid washing and brushing assemblies arranged at the upper end of the acid washing area through the guide assembly to be subjected to acid washing, and when the steel belt enters the clean water rinsing area through the acid washing area, the steel belt is extruded through the wringing roller arranged at the tail end of the acid washing area firstly, so that too much acid liquid entering the clean water rinsing area is reduced; when the steel belt passes through the tail end of the clean water rinsing area, the other wringing rollers conduct wringing treatment on the surface of the steel belt, the steel belt enters the drying area, water absorption assemblies are arranged at the upper end and the lower end of the drying area, and surface moisture of the steel belt is removed through the water absorption assemblies.

Description

Technical Field

[0001] The utility model belongs to the technical field of stainless steel pickling, and particularly relates to a multi-stage treatment device for residual dirt marks on the surface of wide-band stainless steel strips. Background Art

[0002] During the rolling process of the surface of the stainless steel strip, a certain amount of scale will be generated on the surface, which needs to be pickled. After pickling, cooling, etc., water stains and acid liquid will remain on the surface, which are prone to generate dirt marks and affect the surface quality of the strip. Therefore, it is necessary to clean the residual water stains on the surface in time.

[0003] After retrieval, in the prior art, there is an efficient pickling device for strip steel processing with a publication number of CN218146970U. When the strip steel passes through the opening in the middle of the partition board, the wool roller can roll along the surface of the strip steel to scrape off the residual water stains and unpeeled oxides on the surface of the strip steel. Before the strip steel moves to the outlet, it will pass through the inner side of the air blowing pipe, and the blower pumps air into the air blowing pipe, so that the air blowing nozzle dries the water stains on the surface of the strip steel. The above scheme has problems: drying the water stains on the strip steel by matching the air blowing pipe with the air blowing nozzle. If the larger water droplets are dried slowly, and at the same time, the water droplets will slide down along the wind direction, generating water marks, resulting in the need for secondary treatment.

[0004] After retrieval, in the prior art, there is a stainless steel wide-width panel dirt mark pickling device and its pickling process with a publication number of CN117089853A. The following problems occur during pickling: during the operation of the water absorption roller, the motor I arranged at the output end of the motor I meshes with the guide groove, which will drive the overall reciprocating movement of the sliding plate to squeeze the residual water inside the water absorption roller; in actual use, when the water absorption roller is used for a long time, its compressive capacity decreases, and it is extremely easy to cause tearing after being squeezed by the arc-shaped pressing plate. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a multi-stage treatment device for residual dirt marks on the surface of wide-band stainless steel strips. The strip steel enters the pickling area for pickling and soaking, and then enters the acid brushing assembly and the cleaning brush assembly to quickly process the surface of the strip steel. Through the water absorption assembly, the water absorption type surrounding belt wipes the surface of the strip steel, quickly drains and absorbs the water droplets. At the same time, in order to prevent the water absorption type surrounding belt from being saturated with water absorption, corresponding water absorption ports and air outlet rollers are arranged on the front and back sides, blowing air on one side and sucking air on the other side, accelerating the removal of the water stains inside the water absorption type surrounding belt by the airflow. In order to accelerate the evaporation speed of the water stains, a heating wire is arranged on the blower to generate high-temperature gas, accelerating the evaporation of the gas and ensuring the water absorption performance of the water absorption assembly.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] A multi-stage processing device for residual dirt marks on the surface of a wide-band stainless steel strip divides the inner side of the shell into three areas by two partition plates, namely, a pickling area, a clear water rinsing area, and a drying area. The strip is first fed forward through a guiding component and cooperates with the pickling area, the clear water rinsing area, and the drying area. The strip is transported through the guiding component and moves between two groups of upper and lower opposing acid scrubbing components arranged at the upper end of the pickling area for pickling. By rotating the double-threaded columns provided on the acid scrubbing components, cleaning mechanisms are provided on the double-threaded columns. Through the guiding of the double-threaded grooves on the double-threaded columns, the cleaning mechanisms move reciprocally. At the same time, the inner and outer side brush heads on the cleaning mechanisms rotate forward and backward, and cooperate with the water spray nozzles provided on the cleaning mechanisms to spray acid solution.

[0008] When the strip enters the clear water rinsing area from the pickling area, the strip first passes through the squeezing rollers arranged at the tail end of the pickling area to squeeze the acid solution, reducing the excessive entry of acid solution into the clear water rinsing area. The strip moves to the cleaning brush assembly. The driving motor provided on the cleaning brush assembly drives a gear at the lower end. The gear drives the semi-gear brushes provided on both sides to rotate. The semi-gear brushes are engaged with the teeth on both sides of the rack through the semi-gears provided at the upper end. By driving the lower-end gear to rotate through the driving motor, the lower-end gear drives the semi-gear brushes on both sides to rotate in the reverse direction to achieve reciprocating motion, reciprocally cleaning the surface of the strip. Then, it cooperates with the water spray pipe provided on the cleaning brush assembly to spray cleaning water. The cleaning water is sprayed onto the strip through the water spray nozzles provided at the lower end of the semi-gear brushes to rinse the strip with clear water.

[0009] After the water washing and cleaning are completed, when the strip passes through the tail end of the clear water rinsing area, another squeezing roller performs squeezing treatment on the surface of the strip. The strip enters the drying area. Water absorption components are provided at both the upper and lower ends of the drying area. The strip passes through the water absorption components to remove the surface moisture. The strip moves between two opposite water absorption components. By starting the rotating motor provided on the water absorption components, the air outlet roller and the driven roller on the water absorption components are driven to rotate. The roller drives the water absorption type surrounding belt provided on the outside to rotate, absorbing the water stains on the surface of the strip. At the same time, through the blower connected to the pipeline on one side of the air outlet roller, the gas is heated by the heating wire provided inside the blower. The air is blown through the air outlet rollers provided on both sides of the surrounding belt. Then, it is connected to the water suction port of the air extraction pump through the pipeline on the outside of the surrounding belt, so that the water absorption type surrounding belt absorbs the water on the surface of the strip cleanly, reducing the moisture on the water absorption type surrounding belt itself.

[0010] Preferably, the guiding component includes a conveying roller and a guiding plate Ⅰ. A V-shaped guiding plate Ⅰ is installed between the inner walls on both sides of the shell. A conveying roller is provided at the opening of the V-shaped guiding plate Ⅰ. Both sides of the conveying roller are axially connected to the shell. One side of the conveying roller is drivingly connected to a rotating motor, and the rotating motor drives the remaining conveying rollers to rotate through a conveyor belt.

[0011] Preferably, the acid scrubbing assembly includes a lifting motor, which is correspondingly installed on both sides of the upper and lower ends of the housing. An L-shaped plate is correspondingly installed on the lifting motor. A double-threaded column is axially connected between the upper and lower L-shaped plates. A rotary motor is provided on one side of the double-threaded column. A guide rod is provided on one side of the double-threaded column. A connecting frame is slidably connected to the guide rod. A rotatable steering block is provided on the connecting frame. A guide post is provided at the lower end of the steering block. The guide post is slidably fitted in the thread of the double-threaded column. A cleaning mechanism is provided at the lower end of the connecting frame.

[0012] Preferably, the cleaning mechanism includes a shaft connecting cylinder. The shaft connecting cylinder is installed at the lower end of the connecting frame. A liquid inlet pipe is connected to the upper end of the shaft connecting cylinder through a pipeline. A connecting cylinder is rotatably connected to the lower end of the shaft connecting cylinder. A gear is provided on the connecting cylinder. The gear meshes with another gear on one side. The other gear is driven by a rotary motor. The rotary motor is installed on the connecting frame. An inner brush head is provided at the lower end of the connecting cylinder. An outer brush head is rotatably connected to the outside of the inner brush head. A water outlet is provided at the lower end of the inner brush head. The water outlet is matched with the middle cavity of the inner brush head. Water outlet holes are provided at the lower ends of both the inner brush head and the outer brush head. A toothed ring is provided at the upper end of the outer brush head. The toothed ring is meshed and connected with a bevel gear. The bevel gear is connected with the gear at the lower end of the rotary motor through a rotating shaft.

[0013] Preferably, two groups of cleaning brush assemblies are provided on both sides of the clear water rinsing area. Each group of cleaning brush assemblies is arranged on the front and back sides of the steel belt. The cleaning brush assembly includes a mounting plate, which is installed on the inner walls of both sides of the housing. A rack is provided between the mounting plates. The rack meshes with the half gears on the half gear brushes provided on both sides through the teeth on both sides. A gear is provided at the lower end of the half gear. Another gear is meshed and connected between the two gears on both sides. The upper end of the other gear is connected with a driving motor. The driving motor is slidably installed on a slot provided in the middle of the rack. Guide rails are provided on both sides of the slot for restricting the rotation of the driving motor to enable the rotary motor to better drive the lower gear to rotate. A guide plate II is also provided between the mounting plates for supporting and guiding the half gear brush and the gear on the rotary motor. The upper end of the half gear brush is axially connected to the water outlet of the water spraying pipe. Water outlet holes and brush heads are provided at the lower end of the half gear brush. The middle support column of the half gear brush is hollow inside for connecting the water spraying pipe with the water outlet holes of the water spraying holes.

[0014] Preferably, the water absorption assembly includes a lifting plate, a blowing device and a blower. Slots are provided on both sides of the housing. A lead screw and a guide post are provided in the slots. The upper end of the lead screw is connected with a rotary motor. A lifting plate is provided in a matching manner on the lead screw and the guide post. A bracket is connected between the lifting plates. An air outlet roller is rotatably installed on the bracket. Air outlet holes are provided on the air outlet roller. A blowing device is connected to one side of the air outlet roller through a pipeline. The blowing device is composed of a connecting pipeline and a blower. The blower bracket is installed on the outside of the lifting plate. A heating wire is also provided inside the blower to assist in discharging hot air. A driven roller is provided between the two air outlet rollers on both sides. A water absorption type surrounding belt is provided in a matching manner on the air outlet roller and the driven roller. A water absorption port is provided in a matching manner on the outside of the water absorption type surrounding belt. The water absorption type surrounding belt is an industrially used water absorption cotton arranged in a surrounding manner, preferably made of PP water absorption cotton material.

[0015] The beneficial effects of the present utility model compared with the prior art are as follows:

[0016] 1) By providing an acid scrubbing component, the lifting motor is used to ensure that the inner and outer brush heads contact the surface of the steel strip. At the same time, the rotating motor drives the double-threaded column to rotate unidirectionally. The steering block at the lower end of the connecting frame moves rapidly back and forth in the thread groove of the double-threaded column, realizing the reciprocating movement of the brush. At the same time, the rotating motor drives the inner and outer brush heads to rotate forward and backward through gears, cleaning the surface of the steel strip reciprocally to prevent dead corners. At the same time, the inner and outer brush heads cooperate with the reciprocating movement to increase the cleaning effect. At the same time, through the water outlet holes at the lower ends of the inner and outer brush nozzles, the effect of acid solution on the surface of the steel strip is increased to assist in cleaning dirt marks, etc.

[0017] 2) The squeezing roller prevents a large amount of acid solution from entering the clean water rinsing area. Then, the cleaning brush component is started to clean the acid solution on both sides of the steel strip, preventing the acid solution from staying on the surface of the steel strip for too long and affecting the surface quality of the steel strip. At the same time, the lower brush heads at the lower end of the semi-gear brush are notified to assist in cleaning the surface of the steel strip again to increase the cleanliness. Through the meshing of the semi-gears on both sides with the rack, the reciprocating movement of the semi-gear brush is realized.

[0018] 3) The water stains on the surface of the steel strip are cleaned by the water-absorbing component's water-absorbing surrounding belt. The water-absorbing surrounding belt replaces the traditional water-absorbing roller. At the same time, to prevent the water-absorbing effect of the water-absorbing surrounding belt from deteriorating, a blower with an internal heating wire is set to blow air to the air outlet roller, accelerating the air flow on the surface of the conveyor belt and increasing the water-absorbing effect of the water-absorbing surrounding belt. In cooperation with the connection between the water absorption port and the air extraction pump, the water stains and moisture on the surface of the water-absorbing surrounding belt are pumped away to assist in increasing the water-absorbing effect of the water-absorbing surrounding belt. Compared with the traditional squeezing water-absorbing roller, this method reduces the equipment maintenance rate and increases the service life. At the same time, it retains the water-absorbing effect of the water-absorbing roller and adopts a new method to remove the moisture inside the water-absorbing material. At the same time, the width of the water-absorbing surrounding belt is increased to increase the contact area with the steel strip and enhance the water-absorbing effect. The present utility model can work cyclically, and the water absorption process does not affect the operation of the water-absorbing surrounding belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Attached Figure 1 is a schematic structural diagram of a multi-stage treatment device for residual dirt marks on the surface of a wide stainless steel strip of the present utility model;

[0020] Attached Figure 2 is a schematic structural diagram of the acid scrubbing component of the present utility model;

[0021] Attached Figure 3 is a schematic structural diagram of the acid scrubbing component of the present utility model;

[0022] Attached Figure 4 is a schematic diagram of the double-threaded column structure of the present utility model;

[0023] Attached Figure 5 is a schematic structural diagram of the cleaning brush component of the present utility model in the figure;

[0024] Attached Figure 6 is a schematic structural diagram of the water absorption component of the present utility model;

[0025] Attached Figure 7 is a schematic structural diagram of the water absorption component of the present utility model;

[0026] Attached Figure 8 is a schematic three-dimensional structural diagram of the present utility model.

[0027] In the figure: 1. Guide component; 101. Conveyor roller; 102. Guide plate I; 2. Housing; 21. Squeezing roller; 3. Acid scrubbing brush component; 31. L-shaped plate; 32. Guide rod; 33. Connecting frame; 34. Steering block; 35. Double-threaded column; 36. Lifting motor; 37. Cleaning mechanism; 371. Axially-connected cylinder; 372. Connecting cylinder; 373. Outer brush head; 374. Inner brush head; 375. Liquid inlet pipe; 4. Cleaning brush component; 41. Water spray pipe; 42. Guide plate II; 45. Semi-gear brush; 46. Driving motor; 47. Mounting plate; 48. Rack; 5. Water absorption component; 51. Lifting plate; 52. Water absorption port; 53. Blowing device; 54. Water absorption type surrounding belt; 55. Blower; 56. Air outlet roller; 6. Steel belt; 7. Partition board. Specific embodiments

[0028] The following is a detailed description of the present disclosure in conjunction with the embodiments shown in the accompanying drawings. It should be noted, however, that these embodiments are not intended to limit the present disclosure. Any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present disclosure.

[0029] For the convenience of those skilled in the art, the following further specifically describes the technical solution of the present utility model in conjunction with the attached Figure 1-8 , drawings.

[0030] Embodiment 1:

[0031] A multi-stage treatment device for residual dirt marks on the surface of a wide-band stainless steel steel belt includes the following steps: S1. Divide the interior of the housing 2 into three areas by two partition boards 7, namely, an acid pickling area, a clear water rinsing area, and a drying area. First, send the steel belt 6 forward through the guide component 1 into the acid pickling area, the clear water rinsing area, and the drying area. The dirt mark treatment process is as follows:

[0032] S1: Acid pickling and soaking treatment: The steel belt 6 is soaked through the cooperation of the guide component 1 and the bottom of the acid pickling area. The acid solution is mixed acid stage 1 and mixed acid stage 2. The nitric acid concentration in mixed acid stage 1 is 62 g / L, the hydrogen fluoride concentration is 18 g / L, the metal ion concentration is 34 g / L, and the temperature is 60 °C. The nitric acid concentration in mixed acid stage 2 is 85 g / L, the hydrogen fluoride concentration is 25 g / L, and the metal ion concentration is 25 g / L;

[0033] S2: Pickling and cleaning treatment: The steel strip 6 is transported by the guiding component 1 to between two sets of upper and lower opposing acid scrubbing components 3 provided at the upper end of the pickling area for pickling. By rotating the double-threaded column 35 provided on the acid scrubbing component 3, a cleaning mechanism 37 is provided on the double-threaded column 35. The cleaning mechanism 37 reciprocates through the double-threaded groove on the double-threaded column 35. At the same time, the inner and outer side brush heads on the cleaning mechanism 37 rotate forward and backward, and cooperate with the water spray nozzles provided on the cleaning mechanism 37 to spray acid solution. At this time, the rotational speed of the brush head is set at 4800 - 7000 rpm, and the same part of the steel strip is cleaned for 2 - 3 minutes. After cleaning, the steel strip intermittently moves to the next process;

[0034] S3: Water washing and cleaning treatment: When the steel strip 6 enters the clean water rinsing area after passing through the pickling area, the steel strip 6 first passes through the squeezing roller 21 provided at the end of the pickling area to squeeze the acid solution, reducing the excessive entry of acid solution into the clean water rinsing area. The steel strip 6 moves to the cleaning brush assembly 4. The driving motor 46 provided on the cleaning brush assembly 4 drives a gear at the lower end, and the gear drives the semi-gear brushes 45 provided on both sides to rotate. The semi-gear brushes 45 are meshed with the teeth on both sides of the rack 48 through the semi-gears provided at the upper end. By driving the lower-end gear to rotate by the driving motor 46, the lower-end gear drives the semi-gear brushes 45 on both sides to rotate in the opposite direction to achieve reciprocating motion, reciprocatingly cleaning the surface of the steel strip 6. Then, in cooperation with the water spray pipe 41 provided on the cleaning brush assembly 4 to spray cleaning water, the cleaning water is sprayed onto the steel strip 6 through the water spray nozzles provided at the lower end of the semi-gear brushes 45 to rinse the steel strip 6 with clean water. While the driving motor 46 drives the semi-gear brushes 45 on both sides to reciprocate, the rotational speed of the semi-gear brushes 45 is 1000 - 1500 rpm, and the same part of the steel strip is cleaned for 1 - 2 minutes. The steel strip continues to move forward, enters the bottom of the clean water rinsing area and comes into large-area contact with water for water washing and soaking, and then enters the cleaning brush assembly 4 on the other side for secondary cleaning;

[0035] S4: Dewatering treatment: After water washing and cleaning, when the steel strip 6 passes through the end of the clean water rinsing area, another squeezing roller 21 performs squeezing treatment on the surface of the steel strip 6. The steel strip 6 enters the drying area. Water absorption components 5 are provided at both the upper and lower ends of the drying area. The steel strip 6 passes through the water absorption components 5 to remove the surface moisture. The steel strip 6 moves between two opposite water absorption components 5. By starting the rotating motor provided on the water absorption components 5, the air outlet roller 56 and the driven roller on the water absorption components 5 are driven to rotate, and the roller drives the water absorption type surrounding belt 54 provided on the outside to rotate, absorbing the water stains on the surface of the steel strip 6. At the same time, through the blower 55 connected to the pipe on one side of the air outlet roller 56, the gas is heated by the heating wire provided inside the blower 55, and the air is blown through the air outlet roller 56 on both sides of the water absorption type surrounding belt 54. Then, through the pipe connected to the water absorption port 52 of the air extraction pump on the outside of the water absorption type surrounding belt 54, the water absorption type surrounding belt 54 absorbs the water on the surface of the steel strip 6 completely, reducing the moisture on the water absorption type surrounding belt 54 itself.

[0036] The guiding component 1 includes a conveying roller 101 and a guiding plate I 102. A V-shaped guiding plate I 102 is installed between the inner walls on both sides of the housing 2. A conveying roller 101 is provided at the opening of the V-shaped guiding plate I 102. Both sides of the conveying roller 101 are axially connected to the housing 2. One side of the conveying roller 101 is drivingly connected to a rotating motor, and the rotating motor drives the other conveying rollers 101 to rotate through a conveyor belt.

[0037] Combined with Figure 2 and Figure 3 as described above, the acid scrubbing component 3 includes a lifting motor 36. The lifting motor 36 is correspondingly installed on both sides of the upper and lower ends of the housing 2. An L-shaped plate 31 is correspondingly installed on the lifting motor 36. A double-threaded column 35 is axially connected between the upper and lower L-shaped plates 31. A rotating motor is provided on one side of the double-threaded column 35. A guiding rod 32 is provided on one side of the double-threaded column 35. A connecting frame 33 is slidably connected to the guiding rod 32. A rotatable steering block 34 is provided on the connecting frame 33. A guiding column is provided at the lower end of the steering block 34. The guiding column is slidably fitted in the thread of the double-threaded column 35. A cleaning mechanism 37 is provided at the lower end of the connecting frame 33.

[0038] Combined with Figure 3 as shown, the cleaning mechanism 37 includes a shaft connecting cylinder 371. The shaft connecting cylinder 371 is installed at the lower end of the connecting frame 33. A liquid inlet pipe 375 is connected to the upper end of the shaft connecting cylinder 371 through a pipe. A connecting cylinder 372 is rotatably connected to the lower end of the shaft connecting cylinder 371. A gear is provided on the connecting cylinder 372. The gear meshes with another gear on one side. The other gear is driven by a rotating motor. The rotating motor is installed on the connecting frame 33. An inner brush head 374 is provided at the lower end of the connecting cylinder 372. An outer brush head 373 is rotatably connected to the outside of the inner brush head 374. A water outlet is provided at the lower end of the inner brush head 374. The water outlet is matched with the middle cavity of the inner brush head 374. Water outlet holes are provided at the lower ends of both the inner brush head 374 and the outer brush head 373. A toothed ring is provided at the upper end of the outer brush head 373. The toothed ring is meshed with a bevel gear. The bevel gear is connected to the gear at the lower end of the rotating motor through a rotating shaft.

[0039] Combined with Figure 5As shown in the figure, two sets of cleaning brush assemblies 4 are provided on both sides of the clear water rinsing area. Each set of cleaning brush assemblies 4 is arranged on the front and back sides of the steel belt 6. The cleaning brush assembly 4 includes a mounting plate 47, which is mounted on the inner walls of both sides of the housing 2. A rack 48 is provided between the mounting plates 47. The rack 48 meshes with the half gears on the half gear brushes 45 provided on both sides through the teeth on both sides. A gear is provided at the lower end of the half gear. Another gear is meshed and connected between the two side gears. The upper end of the other gear is connected to a driving motor 46. The driving motor 46 is slidably mounted on a slot provided in the middle of the rack 48. Guide rails are provided on both sides of the slot to limit the rotation of the driving motor 46, so as to enable the rotary motor to better drive the lower gear to rotate. A guide plate II 42 is also provided between the mounting plates 47 to support and guide the half gear brush 45 and the gear on the rotary motor. The upper end of the half gear brush 45 is axially connected to the water outlet of the water spraying pipe 41. The lower end of the half gear brush 45 is provided with a water outlet hole and a brush head. The middle support column of the half gear brush 45 is hollow to connect the water spraying pipe 41 with the water outlet of the water spraying hole.

[0040] Combined with Figure 6 and Figure 7 As shown in the figure, the water absorption assembly 5 includes a lifting plate 51, a blowing device 53 and a blower 55. Slots are provided on both sides of the housing 2. A lead screw and a guide post are provided in the slots. The upper end of the lead screw is connected to a rotary motor. A lifting plate 51 is provided in a matching manner on the lead screw and the guide post. A bracket is connected between the lifting plates 51. An air outlet roller 56 is rotatably mounted on the bracket. Air outlet holes are provided on the air outlet roller 56. One side of the air outlet roller 56 is connected to the blowing device 53 through a pipeline. The blowing device 53 is composed of a connecting pipeline and a blower 55. The blower 55 is mounted on the outer side of the lifting plate 51 through a bracket. A heating wire is also provided inside the blower 55 to assist in blowing hot air. A driven roller is provided between the two side air outlet rollers 56. A water absorption type surrounding belt 54 is provided in a matching manner on the air outlet roller 56 and the driven roller. The water absorption type surrounding belt 54 is an industrial water absorption cotton arranged in a surrounding manner. Preferably, a PP water absorption cotton material is used (PP water absorption cotton is an industrial water absorption material made of polypropylene material, which has good corrosion resistance, antibacterial property and water absorption performance. In addition, PP water absorption cotton also has better compressive resistance, anti-static property, wear resistance and other properties, and is applicable to various different industrial fields).

[0041] A water absorption port 52 is provided in a matching manner on the outer side of the water absorption type surrounding belt 54.

[0042] Embodiment 2:

[0043] The difference from Embodiment 1 is that:

[0044] S1: Pickling and soaking treatment: The steel strip 6 is soaked in cooperation with the bottom of the pickling area through the guiding component 1, in the first stage of mixed acid and the second stage of mixed acid. In the first stage of mixed acid, the nitric acid concentration is 56 g / L, the hydrogen fluoride concentration is 16 g / L, the metal ion concentration is 32 g / L, and the temperature is 56 °C. In the second stage of mixed acid, the nitric acid concentration is 71 g / L, the hydrogen fluoride concentration is 21 g / L, and the metal ion concentration is 21 g / L;

[0045] Example 3:

[0046] The difference from Example 1 is that:

[0047] S1: Pickling and soaking treatment: The steel strip 6 is soaked in cooperation with the bottom of the pickling area through the guiding component 1, in the first stage of mixed acid and the second stage of mixed acid. In the first stage of mixed acid, the nitric acid concentration is 70 g / L, the hydrogen fluoride concentration is 20 g / L, the metal ion concentration is 39 g / L, and the temperature is 65 °C. In the second stage of mixed acid, the nitric acid concentration is 100 g / L, the hydrogen fluoride concentration is 30 g / L, and the metal ion concentration is 30 g / L.

[0048] Through the above Example 1, Example 2 and Example 3, visually check whether there are any dirty marks on the surface of the steel strip 6;

[0049] In Example 1, the surface is visually smooth without defects and there are local slight dirty marks.

[0050] In Example 2, the surface is visually smooth without defects and no local dirty marks are found.

[0051] In Example 3, the acid concentration on the surface is visually too high, resulting in slight holes on the steel strip, the surface is rough, and there is still a small amount of acid remaining in the pits.

[0052] In summary, soaking the steel strip with acid solution through the guiding component 1 facilitates the removal of quality problems such as dirty marks in the next step. The cleaning mechanism 37 on the acid scrubbing component 3 sweeps and removes the impurities on the surface of the steel strip, and the inner and outer brushes are used to increase the cleaning strength. Through the water outlet holes at the lower ends of the inner brush head 374 and the outer brush head 373, the brush heads cooperate with the acid solution during operation. At the same time, the inner and outer brush heads rotate forward and backward to increase the cleaning effect. The double-threaded column 35 is driven by the rotating motor, and in cooperation with the steering block 34 moving on the thread groove, a reciprocating motion is achieved, increasing the comprehensive lateral cleaning of the steel strip 6 to prevent dead corners;

[0053] After pickling treatment, the acid solution on the surface of the steel strip 6 is cleaned again by the cleaning brush assembly 4 to prevent the acid solution from damaging the surface of the steel strip due to too long residual time on the steel strip 6, causing pits and affecting the quality of the steel strip 6. The external water pump (not shown in the figure) is connected to the water spray pipe 41. The water spray pipe sprays clean water onto the steel strip 6 through the water outlet holes at the lower end of the semi-gear brush 45 to wash away the acid solution. Together with the brush head at the lower end of the semi-gear brush 45, it helps to accelerate the cleaning of the acid solution. At the same time, the driving motor 46 drives the lower gear to rotate, and the gear drives the two semi-gear brushes 45 on both sides to rotate. The semi-gear brushes 45 are driven by the cooperation of the two semi-gears on both sides to realize reciprocating movement of the semi-gear brushes 45 on the rack 48. The radius of the semi-gear matches the rack 48;

[0054] At the same time, a guiding assembly 1 can also be provided at the cleaning brush assembly 4 to facilitate the guiding operation of the steel strip;

[0055] After the acid solution is cleaned by the water washing treatment of the cleaning brush assembly 4, the equipment needs to be kept dry when leaving the equipment. The water stains on the surface of the steel strip are cleaned by the water absorption assembly 5. The rotating motor drives one side air outlet roller 56 to rotate, and the chain drives other driven rollers and the air outlet roller 56 on the other side to rotate, driving the water absorption type surrounding belt 54 to rotate. At the same time, in cooperation with the blower 55 to accelerate the air flow, a heating wire is also provided inside the blower 55 to increase the air evaporation effect. At the same time, in cooperation with the water absorption ports 52 provided on both sides of the water absorption type surrounding belt 54, the water absorption ports are connected to an external air extraction pump to increase the air loss speed and accelerate the drying degree of the water absorption type surrounding belt 54.

[0056] The above content is only an example and description of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them. As long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all belong to the protection scope of the present invention.

Claims

1. A multi-stage treatment device for residual dirty marks on the surface of wide-band stainless steel strip, characterized in that: The inner side of the shell is divided into three areas by two partitions, namely, the pickling area, the clean water rinsing area, and the drying area. The steel strip is first sent forward to the pickling area, the clean water rinsing area, and the drying area through the guide assembly. The steel strip is moved and transported to between two groups of upper and lower opposing pickling brush assemblies provided at the upper end of the pickling area through the guide assembly for pickling. The double-threaded column provided on the pickling brush assembly rotates, and a cleaning mechanism is provided on the double-threaded column. The cleaning mechanism is guided to reciprocate through the double-threaded groove on the double-threaded column. At the same time, the inner and outer brush heads on the cleaning mechanism rotate forward and reverse, and the acid is sprayed in cooperation with the water spray port provided on the cleaning mechanism. When the steel strip passes through the pickling area and enters the clean water rinsing area, the steel strip first passes through the squeeze roller at the tail end of the pickling area to squeeze the acid to reduce excessive acid entering the clean water rinsing area. The steel strip moves to the cleaning brush assembly, and the driving motor provided at the cleaning brush assembly drives the gear provided at the lower end. The gear drives the semi-gear brushes provided on both sides to rotate. The semi-gear brushes are engaged with the teeth on both sides of the rack through the semi-gear provided at the upper end. The lower end gear is driven by the driving motor to rotate, and the lower end gear drives the semi-gear brushes on both sides to rotate in the opposite direction to realize reciprocating motion, so as to reciprocate and clean the surface of the steel strip, and then the water spray pipe provided on the cleaning brush assembly sprays cleaning water, and the water spray port provided at the lower end of the semi-gear brush is sprayed onto the steel strip to rinse the steel strip with clean water. After washing and cleaning, when the steel belt passes through the tail end of the clean water rinsing area, another squeezing roller squeezes the surface of the steel belt and the steel belt enters the drying area. The upper and lower ends of the drying area are provided with water absorption components. The steel belt passes through the water absorption component to remove surface moisture. The steel belt moves between two opposite water absorption components and is started by the rotating motor provided on the water absorption component to drive the air outlet roller and the driven roller on the water absorption component to rotate. The roller drives the water absorption type surrounding belt provided on the outside to rotate to absorb water stains on the surface of the steel belt. At the same time, the blower connected to the pipe on one side of the air outlet roller heats the gas through the heating wire inside the blower, blows air through the air outlet rollers on both sides of the surrounding belt, and then connects to the water suction port of the vacuum pump through the pipe on the outside of the surrounding belt, so that the water absorption type surrounding belt can absorb the moisture on the surface of the steel belt and reduce the moisture on the water absorption type surrounding belt itself.

2. The multi-stage treatment device for residual dirty marks on the surface of a wide stainless steel strip according to claim 1 is characterized in that: The guide assembly includes a conveying roller and a guide plate I. A V-shaped guide plate I is installed between the inner walls of both sides of the shell. A conveying roller is provided at the opening of the V-shaped guide plate I. Both sides of the conveying roller are connected to the shell through shafts. One side of the conveying roller is driven and connected to a rotating motor, and the rotating motor drives the remaining conveying rollers to rotate through a conveyor belt.

3. The multi-stage treatment device for residual dirty marks on the surface of a wide stainless steel strip according to claim 1 is characterized in that: The pickling brush assembly includes a lifting motor, which is correspondingly installed on both sides of the upper and lower ends of the shell, and an L-shaped plate is correspondingly installed on the lifting motor. A double-threaded column is axially connected between the upper and lower L-shaped plates, a rotating motor is provided on one side of the double-threaded column, a guide rod is provided on one side of the double-threaded column, a connecting frame is slidably connected to the guide rod, a rotatable steering block is provided on the connecting frame, a guide column is provided at the lower end of the steering block, the guide column is slidably fitted in the thread of the double-threaded column, and a cleaning mechanism is provided at the lower end of the connecting frame.

4. The multi-stage treatment device for residual dirty marks on the surface of a wide stainless steel strip according to claim 3 is characterized in that: The cleaning mechanism includes a shaft connection tube, a shaft connection tube is installed at the lower end of the connecting frame, a liquid inlet pipe is connected to the upper end pipeline of the shaft connection tube, a connecting tube is rotatably connected to the lower end of the shaft connection tube, a gear is provided on the connecting tube, the gear is meshed with another gear on one side, the other gear is driven by a rotating motor, the rotating motor is installed on the connecting frame, an inner brush head is provided at the lower end of the connecting tube, an outer brush head is rotatably connected to the outer side of the inner brush head, a water outlet is provided at the lower end of the inner brush head, the water outlet is matched with the middle cavity of the inner brush head, water outlet holes are provided at the lower ends of the inner brush head and the outer brush head, a gear ring is provided at the upper end of the outer brush head, the gear ring is meshed with a bevel gear, and the bevel gear is matched with the gear at the lower end of the rotating motor through a rotating shaft.

5. The multi-stage treatment device for residual dirty marks on the surface of a wide stainless steel strip according to claim 1 is characterized in that: Two groups of cleaning brush assemblies are provided on both sides of the clean water rinsing area, and each group of cleaning brush assemblies is arranged on the front and back sides of the steel belt. The cleaning brush assembly includes mounting plates, which are mounted on the inner walls of the shell on both sides. Racks are arranged between the mounting plates, and the racks are meshed with the half gears on the half gear brushes on both sides through the teeth on both sides. A gear is arranged at the lower end of the half gear, and another gear is meshed and connected between the gears on both sides. A driving motor is connected to the upper end of the other gear, and the driving motor is slidably mounted on a slot provided in the middle of the rack. Guide rails are arranged on both sides of the slot for limiting the rotation of the driving motor so that the rotating motor can better drive the lower end gear to rotate. A guide plate II is also arranged between the mounting plates for supporting and guiding the gears on the half gear brush and the rotating motor. The upper end of the half gear brush is axially connected to the water outlet of the water spray pipe, and the lower end of the half gear brush is provided with a water outlet and a brush head. The middle support column of the half gear brush is hollow inside and is used to connect the water spray pipe and the water outlet of the water spray hole.

6. The multi-stage treatment device for residual dirty marks on the surface of a wide stainless steel strip according to claim 1 is characterized in that: The water absorption component includes a lifting plate, a blowing device and a blower. Slots are provided on both sides of the shell, and screw rods and guide columns are provided in the slots. The upper end of the screw rod is connected to a rotating motor, and a lifting plate is cooperated with the screw rod and the guide column. A bracket is connected between the lifting plates, and an air outlet roller is rotatably installed on the bracket. The air outlet roller is provided with an air outlet. A pipe on one side of the air outlet roller is connected to the blowing device. The blowing device consists of a connecting pipe and a blower. The blower bracket is installed on the outer side of the lifting plate. A heating wire is also provided inside the blower to assist in the discharge of hot air. A driven roller is provided between the air outlet rollers on both sides. The air outlet roller and the driven roller are cooperated with a water absorption type surrounding belt, and a water absorption port is cooperated on the outer side of the water absorption type surrounding belt.

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