Cylindrical steel material pickling equipment

Abstract

The present application relates to a kind of cylindrical steel pickling equipment, comprising: fixedly connected on the right side surface of cylindrical steel pickling pool on acid liquid reflux shell;Detachable installation is mounted on the outside surface of the top of cylindrical steel pickling pool on closed top cover;Fixedly connected on the left side surface of cylindrical steel pickling pool on cylindrical steel conveying shell;The outside surface of the top of the acid liquid reflux shell is provided with elastic extrusion liquid scraping unit, and the elastic extrusion liquid scraping unit includes limiting plate, slide bar and semicircular scraper plate.The present application is moved out from the other end of cylindrical steel pickling pool after steel material is completely pickled, and is matched with semicircular scraper plate lap joint on the upper and lower two side surfaces of steel material, then is pulled by motor three pairs of tensile corrosion resistant rope on the inside surface of sleeve shell, so as to make semicircular scraper plate closer to the middle, while semicircular scraper plate contracts, the elastic strip on the two side surfaces of semicircular scraper plate is extruded, and the extruded soft strip on the inside wall of elastic strip is attached to the left and right two side surfaces of steel material.

Description

Technical Field

[0001] This invention relates to the field of pickling technology for cylindrical steel, and in particular to a pickling device for cylindrical steel. Background Technology

[0002] The surface quality of cylindrical steel is one of the key factors affecting product performance improvement. Cylindrical steel is mostly cylindrical. During the hot rolling process, a dense metal oxide film, commonly known as scale, forms on the surface of cylindrical steel. This scale will seriously reduce the surface quality of cylindrical steel and aggravate the wear of the rolls. The key process flow of the continuous pickling line for removing scale from the surface of carbon steel is: uncoiling - mechanical descaling - pickling tank - rinsing tank - drying - recoiling. After removing the coarse scale mechanically, the steel enters the pickling tank, where hydrochloric acid is used to chemically remove the residual iron oxide scale.

[0003] In the prior art, patent document CN113549924B proposes a continuous pickling process for cylindrical steel. This process utilizes the strong physicochemical reaction between the high-temperature cylindrical steel and the low-temperature acid solution to rapidly pickle and remove the coarse iron oxide scale on the surface. The temperature of the cylindrical steel entering the tank can exceed 100°C, and the mechanical descaling process at the acid tank inlet, such as straightening machines or shot blasting machines, is eliminated. The graphite heat exchanger is also eliminated from the acid solution circulation system, achieving the purpose of low-temperature pickling. In addition, the redox characteristics of the acid solution in each section of the acid tank can be adjusted to accelerate the removal of iron oxide scale and improve pickling efficiency.

[0004] The existing technology has the following problems: When pickling cylindrical steel, the surface of the steel needs to be completely immersed in acid. These acids are generally acid solutions, hydrofluoric acid, sulfuric acid, and hydrochloric acid, which are highly corrosive and toxic and may release harmful gases. Cylindrical steel is relatively large, and after the steel is moved, a lot of acid will be carried on its surface. After this acid is discharged, it will cause harm to the surrounding environment. The acid cannot be recycled. Moreover, the acid on the surface of the steel is mostly cleaned by workers, which cannot be done manually and will have many omissions. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the surface of steel carries a lot of acid, which will cause harm to the surrounding environment after being discharged, and the acid cannot be recovered or scraped off.

[0006] To solve the above-mentioned technical problems, the present invention provides a cylindrical steel pickling equipment, comprising: Acid reflux shell is fixedly connected to the right side surface of the cylindrical steel pickling tank; A detachable closed top cover installed on the outer surface of the top of a cylindrical steel pickling tank; A cylindrical steel conveying shell is fixedly connected to the left side surface of a cylindrical steel pickling tank; The top outer surface of the acid reflux shell is provided with an elastic squeezing and scraping unit. The elastic squeezing and scraping unit includes a limiting plate, a sliding rod and a semi-circular scraper. The two sides of the semi-circular scraper are provided with a pull-and-close unit. The pull-and-close unit includes a tension anti-corrosion rope and a motor. The two sides of the squeezing and scraping unit are fixedly connected to the outer surface of the semi-circular scraper. The two sides of the squeezing and scraping unit include an elastic strip, a squeezing soft strip and a liquid collection shell.

[0007] In one embodiment of the present invention, an anti-slip limiting unit is movably sleeved on the inner wall of the cylindrical steel pickling tank. The anti-slip limiting unit includes an acid-resistant layer, an elastic wear-resistant strip, and a limiting disc. A multi-size conveying unit is provided on the inner wall of the cylindrical steel conveying shell. The multi-size conveying unit includes a motor, a snap ring, an elastic soft block, an extrusion soft body, and an anti-slip strip.

[0008] In one embodiment of the present invention, the outer surface of the limiting plate is fixedly connected to the outer surface of the cylindrical steel pickling tank, the outer surface of the sliding rod is movably sleeved on the inner wall of the limiting plate, and elastic wires are fixedly connected to both sides of one end of the sliding rod. After the acid on the steel surface is cleaned, the motor releases the three pairs of tension anti-corrosion ropes, and the sliding rod is pulled away and stretched under the push of the elastic wire on one end of the sliding rod, thereby widening the gap between the semi-circular scrapers and facilitating the subsequent adhesion and scraping effect of the cylindrical steel. The other end of the elastic wire is fixedly connected to the outer surface of the limiting plate.

[0009] In one embodiment of the present invention, the other end of the slide rod is fixedly connected to the outer surface of the semi-circular scraper, a fixing block is fixedly connected to the outer surface of the cylindrical steel pickling tank, and a sleeve is fixedly connected to the outer surface of the fixing block.

[0010] In one embodiment of the present invention, the motor three is positioned on the inner wall of the casing. One end of the tension anti-corrosion rope is fixedly connected to the outside of the output end of the motor three, and the other end of the tension anti-corrosion rope is fixedly connected to both sides of the semi-circular scraper. After the steel is completely pickled, it moves out from the other end of the cylindrical steel pickling tank and overlaps the upper and lower sides of the steel with the semi-circular scraper. Then, the tension anti-corrosion rope is pulled by the motor three on the inner surface of the casing, thereby bringing the semi-circular scraper closer to the center.

[0011] In one embodiment of the present invention, the two ends of the elastic strip are fixedly connected to the two end surfaces of the semicircular scraper, and the outer surface of the extrusion strip is fixedly connected to the inner wall of the elastic strip. As the semicircular scraper contracts, the elastic strips on both sides of the semicircular scraper are extruded, and the extrusion strips on the inner wall of the elastic strip are adhered to the left and right sides of the steel. The outer surface of the liquid collection shell is fixedly connected to the outer surface of the limiting plate. As the semicircular scraper closes continuously, the curvature of the inner wall is used to compress and bend the two ends of the extrusion strip, completely wrapping it on the surface of the cylindrical steel. As the cylindrical steel moves continuously, the extrusion strip and the semicircular scraper are used to scrape off and clean the residual acid on the surface.

[0012] In one embodiment of the present invention, the bottom outer surface of the second motor is detachably mounted on the top outer surface of the cylindrical steel conveying shell. The inner wall of the snap ring is fixedly connected to the outer surface of the output end of the second motor. The outer surface of the elastic soft block is fixedly connected to the outer surface of the snap ring. The other side surface of the elastic soft block is fixedly connected to the inner wall of the extrusion soft body. The elastic soft block applies elastic pressure to the extrusion soft body, thereby increasing the friction force. The elastic soft block deforms and expands during extrusion, thereby extruding cylindrical steel of different sizes. The anti-slip strip is positioned on the outer surface of the extrusion soft body. The steel is placed on the top surface of the cylindrical steel conveying shell, and the extrusion soft body surface and the anti-slip strip adhere to the surface of the cylindrical steel.

[0013] In one embodiment of the present invention, a motor is fixedly installed on the outer surface of the cylindrical steel pickling tank, and a rotating roller is movably sleeved on the outer surface of the cylindrical steel pickling tank. A conveyor belt is movably sleeved on the outer surface of the output end of the motor and the outer surface of the rotating roller. When the steel moves into the cylindrical steel pickling tank, the conveyor belt, in conjunction with the motor, rotates, thereby driving the rotating roller to rotate on the outer surface of the cylindrical steel pickling tank.

[0014] In one embodiment of the present invention, the inner surface of the acid-resistant layer is movably sleeved on the outer surface of the rotating roller. The position of the limiting plate is set on the outer surface of the acid-resistant layer. When the acid-resistant layer rotates, it works with the limiting plate to limit the position of the steel, and at the same time, it works with the elastic wear-resistant strip to raise the steel and increase the friction between the steel and the surface, thus propelling it forward. The two ends of the elastic wear-resistant strip are fixedly connected to the middle position of the inner side of the limiting plate. The bottom inner wall of the cylindrical steel pickling tank is provided with a collection shell or acid return shell for the acid solution that has been cleaned. The acid solution is then isolated by the drop of the collected acid solution on the inner wall of the cylindrical steel pickling tank, thereby isolating the rust generated during pickling by its own gravity inside the acid return shell.

[0015] In one embodiment of the present invention, a liquid extractor is fixedly installed on the top right edge of the closed top cover. A suction pipe extending to the bottom inner wall of the cylindrical steel pickling tank is fixedly connected to the input end of the liquid extractor. At the same time, the closed top cover works together to absorb acid through the suction pipe and inject it into the interior of the spray hole. The acid is then diffused and sprayed out through the spray hole, so that the acid is evenly permeated on the surface of the steel for pickling. A spray hole is provided on the bottom surface of the closed top cover, and the output end of the liquid extractor is fixedly connected to the outer surface of the spray hole.

[0016] The technical solution of the present invention has the following advantages over the prior art: The present invention discloses a cylindrical steel pickling device. After the steel is completely pickled, it moves out from the other end of the cylindrical steel pickling tank and, together with a semi-circular scraper, overlaps the upper and lower surfaces of the steel. Then, it is pulled by three pairs of tension anti-corrosion ropes on the inner surface of the casing, thereby bringing the semi-circular scraper closer to the center. As the semi-circular scraper contracts, it compresses the elastic strips on both sides of the scraper, forcing the compression strips on the inner wall of the elastic strips to adhere to the left and right surfaces of the steel. As the semi-circular scraper continuously closes, it utilizes… The curvature of the inner wall compresses and bends the two ends of the extrusion strip, completely wrapping it around the surface of the cylindrical steel. As the cylindrical steel moves, the extrusion strip and semi-circular scraper scrape off the residual acid on the surface. The cleaned acid is then recovered through a collection shell or acid return shell. The recovered acid is then isolated by a drop on the inner wall of the cylindrical steel pickling tank, thus using its own gravity to isolate the rust generated during pickling inside the acid return shell.

[0017] The present invention discloses a cylindrical steel pickling device. After the acid solution on the steel surface is cleaned, the three pairs of tension anti-corrosion ropes of the motor are loosened. Under the push of the elastic wire on one end surface of the slide rod, the slide rod is pulled away and stretched up, which widens the gap between the semi-circular scrapers and facilitates the subsequent adhesion and scraping effect of the cylindrical steel.

[0018] The present invention discloses a cylindrical steel pickling equipment. As the steel moves into the cylindrical steel pickling tank, a pair of conveyor belts driven by a motor rotate, thereby driving rotating rollers to rotate on the outer surface of the cylindrical steel pickling tank. When the acid-resistant layer rotates, a limiting plate restricts the position of the steel, while an elastic wear-resistant strip elevates the steel, increasing the friction between the steel and the surface, thus propelling it forward. Simultaneously, a closed top cover absorbs acid through a suction pipe and pours it into the spray hole, which then diffuses and sprays the acid out, ensuring that the acid evenly permeates the surface of the steel for pickling.

[0019] The present invention discloses a cylindrical steel pickling device. The steel is placed on the top surface of the cylindrical steel conveying shell. The surface of the extrusion soft body and the anti-slip strip are attached to the surface of the cylindrical steel. The extrusion soft body is elastically extruded by the elastic soft block, thereby increasing the friction force. The elastic soft block deforms and expands during the extrusion, thereby extruding cylindrical steel of different sizes. As the motor rotates continuously, the cylindrical steel is moved. Attached Figure Description

[0020] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is an enlarged three-dimensional structural diagram of point A in this invention; Figure 3 This is a cross-sectional three-dimensional structural diagram of the cylindrical steel pickling tank in this invention; Figure 4 This is a cross-sectional perspective view of the three-dimensional structure of the closed top cover in this invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the acid-resistant layer in this invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the elastic wear-resistant strip in this invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the acid reflux shell in this invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the extruded flexible strip in this invention; Figure 9 This is a three-dimensional structural diagram of the cylindrical steel conveying shell in this invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the anti-slip strip in this invention.

[0022] Explanation of reference numerals in the accompanying drawings: 11. Cylindrical steel pickling tank; 111. Motor 1; 112. Conveyor belt; 113. Rotating roller; 114. Acid-resistant layer; 115. Limiting disc; 116. Elastic wear-resistant strip; 12. Close the top cover; 121. Liquid pump; 122. Liquid suction pipe; 123. Liquid spray nozzle; 13. Cylindrical steel conveyor shell; 131. Motor II; 132. Snap-fit ​​ring; 133. Elastic soft block; 134. Extrusion soft body; 135. Anti-slip strip; 14. Acid reflux shell; 141. Limiting plate; 142. Slide rod; 143. Elastic wire; 144. Semi-circular scraper; a1. Elastic strip; a2. Extrusion strip; a3. Liquid collection shell; 145. Tension-resistant anti-corrosion rope; 146. Fixing block; 147. Housing; 148. Motor III. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0024] Reference Figure 1 - Figure 10 As shown, the present invention provides a cylindrical steel pickling apparatus, comprising: Acid reflux shell 14 is fixedly connected to the right surface of the cylindrical steel pickling tank 11; A detachable closed top cover 12 is installed on the outer surface of the top of the cylindrical steel pickling tank 11; A cylindrical steel conveying shell 13 is fixedly connected to the left side surface of the cylindrical steel pickling tank 11; An elastic squeezing scraping unit is provided on the top outer surface of the acid reflux shell 14. The elastic squeezing scraping unit includes a limiting plate 141, a sliding rod 142 and a semi-circular scraper 144. Pull-out closing units are provided on both sides of the semi-circular scraper 144. The pull-out closing units include a tension anti-corrosion rope 145 and a motor 148. Both sides of the squeezing scraping unit are fixedly connected to the outer surface of the semi-circular scraper 144. Both sides of the squeezing scraping unit include an elastic strip a1, a squeezing soft strip a2 and a liquid collection shell a3. An anti-slip limiting unit is movably fitted on the inner wall of the cylindrical steel pickling tank 11. The anti-slip limiting unit includes an acid-resistant layer 114, an elastic wear-resistant strip 116, and a limiting disc 115. A multi-size conveying unit is provided on the inner wall of the cylindrical steel conveying shell 13. The multi-size conveying unit includes a motor 131, a snap ring 132, an elastic soft block 133, an extrusion soft body 134, and an anti-slip strip 135.

[0025] When in use, the elastic extrusion scraping unit provided by the present invention is used in conjunction with the cylindrical steel conveying shell 13 to transport steel, and with the closed top cover 12 on the outer surface of the top of the cylindrical steel pickling tank 11 to soak and clean the steel inside the cylindrical steel pickling tank 11, thereby pickling the steel. After the steel is completely pickled, it moves out from the other end of the cylindrical steel pickling tank 11, and with the semi-circular scraper 144 overlapping the upper and lower surfaces of the steel, the tension anti-corrosion rope 145 is pulled by the motor 3 148 to bring the semi-circular scraper 144 closer to the middle, and the extrusion soft strip a2 is attached to the surface of the steel. The extrusion soft strip a2 and the semi-circular scraper 144 are used to scrape off the residual acid liquid on the surface. The cleaned acid liquid is recycled through the liquid collection shell a3 or the acid liquid return shell 14. When the two-sided squeezing and scraping unit is in use, as the semi-circular scraper 144 retracts, it squeezes the elastic strips a1 on both sides of the semi-circular scraper 144, and the squeezing soft strips a2 on the inner wall of the elastic strips a1 adhere to the left and right sides of the steel. As the semi-circular scraper 144 continuously closes, it uses the curvature of the inner wall to compress and bend the two ends of the squeezing soft strips a2 and close them, completely wrapping them around the surface of the cylindrical steel. As the cylindrical steel moves, the squeezing soft strips a2 and the semi-circular scraper 144 scrape off and clean the residual acid liquid on the surface. When in use, the anti-slip limiting unit works with the acid-resistant layer 114 to transport the cylindrical steel, and with the limiting plate 115 to limit the position of the cylindrical steel. At the same time, the elastic wear-resistant strip 116 is softly attached to the outer surface of the cylindrical steel. When rotating and moving, it increases the friction and anti-slip force between the strip and the steel surface, and enhances the movement effect.

[0026] Furthermore, such as Figure 7 - Figure 8 As shown, the outer surface of the limiting plate 141 is fixedly connected to the outer surface of the cylindrical steel pickling tank 11, the outer surface of the sliding rod 142 is movably sleeved on the inner wall of the limiting plate 141, and elastic wires 143 are fixedly connected to the two sides of one end of the sliding rod 142, and the other end of the elastic wires 143 is fixedly connected to the outer surface of the limiting plate 141.

[0027] When the limiting plate 141, sliding rod 142 and elastic wire 143 provided by the present invention are used, the limiting plate 141 works with the sliding rod 142 to limit the position of the sliding rod 142, so that when the tension anti-corrosion rope 145 pulls the semi-circular scraper 144, the semi-circular scraper 144 will not deviate when it moves. After scraping off the acid, the elastic wire 143 works with the sliding rod 142 to push it in the opposite direction, thereby widening the distance between the two semi-circular scrapers 144.

[0028] Furthermore, such as Figure 7 - Figure 8As shown, the other end of the slide bar 142 is fixedly connected to the outer surface of the semi-circular scraper 144. A fixing block 146 is fixedly connected to the outer surface of the cylindrical steel pickling tank 11. A housing 147 is fixedly connected to the outer surface of the fixing block 146. The position of the motor 148 is set on the inner wall of the housing 147. One end of the tension anti-corrosion rope 145 is fixedly connected to the outside of the output end of the motor 148, and the other end of the tension anti-corrosion rope 145 is fixedly connected to both sides of the semi-circular scraper 144.

[0029] When the housing 147 and motor 148 provided by the present invention are used, the motor 148 pulls the tension anti-corrosion rope 145 to close the semi-circular scraper 144 towards the middle, and the inlet of the housing 147 limits the position of the moving tension anti-corrosion rope 145.

[0030] Furthermore, such as Figure 8 As shown, the two ends of the elastic strip a1 are fixedly connected to the two end surfaces of the semi-circular scraper 144, the outer surface of the extrusion strip a2 is fixedly connected to the inner wall of the elastic strip a1, and the outer surface of the liquid collection shell a3 is fixedly connected to the outer surface of the limiting plate 141.

[0031] When the elastic strip a1 and the extrusion strip a2 provided by the present invention are used, as the semi-circular scraper 144 contracts, the elastic strip a1 on both sides is extruded, and the extrusion strip a2 on the inner wall of the elastic strip a1 is attached to the left and right sides of the steel. As the semi-circular scraper 144 continuously closes, the curvature of the inner wall is used to compress and bend the two ends of the extrusion strip a2 and close them, so that it is completely wrapped on the surface of the cylindrical steel.

[0032] Furthermore, such as Figure 9 - Figure 10 As shown, the bottom outer surface of motor 2 131 is detachably mounted on the top outer surface of cylindrical steel conveying shell 13. The inner wall of snap ring 132 is fixedly connected to the outer surface of the output end of motor 2 131. The outer surface of elastic soft block 133 is fixedly connected to the outer surface of snap ring 132. The other side surface of elastic soft block 133 is fixedly connected to the inner wall of extrusion soft body 134. The anti-slip strip 135 is positioned on the outer surface of extrusion soft body 134.

[0033] When using the motor 131, elastic soft block 133, extrusion soft body 134, and anti-slip strip 135 provided by the present invention, the steel is placed on the top surface of the cylindrical steel conveying shell 13. The extrusion soft body 134 and the anti-slip strip 135 are attached to the surface of the cylindrical steel. The elastic soft block 133 extrudes the extrusion soft body 134 with elastic force, thereby increasing the friction force. The elastic soft block 133 deforms and expands during the extrusion, thereby extruding cylindrical steel of different sizes. As the motor 131 rotates continuously, the cylindrical steel is moved.

[0034] Furthermore, such as Figure 2 - Figure 3 and Figure 5 - Figure 6 As shown, a motor 111 is fixedly installed on the outer surface of the cylindrical steel pickling tank 11. A rotating roller 113 is movably sleeved on the outer surface of the cylindrical steel pickling tank 11. A conveyor belt 112 is movably sleeved on the outer surface of the output end of the motor 111 and the outer surface of the rotating roller 113. The inner surface of the acid-resistant layer 114 is movably sleeved on the outer surface of the rotating roller 113. The position of the limiting plate 115 is set on the outer surface of the acid-resistant layer 114. The two ends of the elastic wear-resistant strip 116 are fixedly connected to the middle position of the inner side of the limiting plate 115. A 117 is provided on the inner bottom wall of the cylindrical steel pickling tank 11.

[0035] When the motor 111, conveyor belt 112, rotating roller 113, acid-resistant layer 114, and limiting plate 115 provided by the present invention are in use, as the steel moves into the cylindrical steel pickling tank 11, the motor 111 rotates the conveyor belt 112, thereby driving the rotating roller 113 to rotate on the outer surface of the cylindrical steel pickling tank 11. When the acid-resistant layer 114 rotates, it works with the limiting plate 115 to limit the position of the steel, and at the same time, it works with the elastic wear-resistant strip 116 to raise the steel and increase the friction between the steel and the steel surface, thus propelling it forward.

[0036] Furthermore, such as Figure 4 As shown, a liquid extractor 121 is fixedly installed on the top right edge of the closed top cover 12. A suction pipe 122 extending to the bottom inner wall of the cylindrical steel pickling tank 11 is fixedly connected to the input end of the liquid extractor 121. A spray hole 123 is provided on the bottom surface of the closed top cover 12, and the output end of the liquid extractor 121 is fixedly connected to the outer surface of the spray hole 123.

[0037] When in use, the suction tube 122 and the spray hole 123 provided by the present invention are used in conjunction with the closed top cover 12 to absorb acid through the suction tube 122 and inject it into the interior of the spray hole 123. The acid is then diffused and sprayed out through the spray hole 123, so that the acid is evenly permeated on the surface of the steel and pickled.

[0038] The working principle of this auxiliary loading and unloading device will be explained in detail below.

[0039] The steel is placed on the top surface of the cylindrical steel conveying shell 13, and the surface of the extrusion soft body 134 and the anti-slip strip 135 are attached to the surface of the cylindrical steel. The extrusion soft body 134 is elastically extruded by the elastic soft block 133, thereby increasing the friction force. The elastic soft block 133 deforms and expands during the extrusion, thereby extruding cylindrical steel of different sizes. As the motor 131 rotates continuously, the cylindrical steel is moved.

[0040] As the steel moves into the cylindrical steel pickling tank 11, the motor 111 rotates the conveyor belt 112, which in turn drives the rotating roller 113 to rotate on the outer surface of the cylindrical steel pickling tank 11. When the acid-resistant layer 114 rotates, the limiting plate 115 limits the position of the steel, and the elastic wear-resistant strip 116 raises the steel and increases the friction between the steel and the surface, thus propelling it forward. At the same time, the closed top cover 12 absorbs the acid through the suction pipe 122 and pours it into the spray hole 123. The acid is then diffused and sprayed out through the spray hole 123, so that the acid is evenly soaked into the surface of the steel, thus pickling the steel.

[0041] After the steel is completely pickled, it moves out from the other end of the cylindrical steel pickling tank 11 and, together with the semi-circular scraper 144, overlaps the upper and lower surfaces of the steel. Then, the motor 148 on the inner surface of the casing 147 pulls the tension anti-corrosion rope 145, thereby bringing the semi-circular scraper 144 closer to the center. As the semi-circular scraper 144 contracts, it compresses the elastic strips a1 on both sides of the semi-circular scraper 144, and the compression soft strips a2 on the inner wall of the elastic strips a1 adhere to the left and right sides of the steel. As the semi-circular scraper 144 continues to close, the curvature of the inner wall compresses and bends the two ends of the compression soft strips a2, completely wrapping them around the surface of the cylindrical steel. The moving mechanism uses the squeezing strip a2 and the semi-circular scraper 144 to scrape off the residual acid on the surface. The cleaned acid is then recycled through the collection shell a3 or the acid return shell 14. The recycled acid is then isolated by the drop of the 117 on the inner wall of the cylindrical steel pickling tank 11, thereby isolating the rust generated during pickling inside the 117 and the acid return shell 14 by its own gravity. After the acid on the steel surface is cleaned, the motor 148 releases the tension anti-corrosion rope 145. The slide rod 142 is pulled out and stretched by the elastic wire 143 on one end surface, widening the gap between the semi-circular scrapers 144 to facilitate the subsequent application of the scraping solution to the cylindrical steel.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A pickling device for cylindrical steel, comprising: Acid reflux shell (14) is fixedly connected to the right side surface of the cylindrical steel pickling tank (11). A detachable closed top cover (12) is installed on the outer surface of the top of the cylindrical steel pickling tank (11). A cylindrical steel conveying shell (13) is fixedly connected to the left side surface of the cylindrical steel pickling tank (11). The feature is that: an elastic squeezing and scraping unit is provided on the top outer surface of the acid reflux shell (14), the elastic squeezing and scraping unit includes a limiting plate (141), a sliding rod (142) and a semi-circular scraper (144), and a pull-and-close unit is provided on both sides of the semi-circular scraper (144), the pull-and-close unit includes a tension anti-corrosion rope (145) and a motor (148), and two sides of squeezing and scraping units are fixedly connected on the outer surface of the semi-circular scraper (144), the two sides of squeezing and scraping units include an elastic strip (a1), a squeezing soft strip (a2) and a liquid collection shell (a3).

2. The cylindrical steel pickling equipment according to claim 1, characterized in that: The inner wall of the cylindrical steel pickling tank (11) is movably fitted with an anti-slip limiting unit, which includes an acid-resistant layer (114), an elastic wear-resistant strip (116), and a limiting disc (115). The inner wall of the cylindrical steel conveying shell (13) is provided with a multi-size conveying unit, which includes a motor (131), a snap ring (132), an elastic soft block (133), an extrusion soft body (134), and an anti-slip strip (135).

3. The cylindrical steel pickling equipment according to claim 1, characterized in that: The outer surface of the limiting plate (141) is fixedly connected to the outer surface of the cylindrical steel pickling tank (11). The outer surface of the sliding rod (142) is movably sleeved on the inner wall of the limiting plate (141). One end of the sliding rod (142) is fixedly connected to both sides of the sliding rod (142), and the other end of the elastic wire (143) is fixedly connected to the outer surface of the limiting plate (141).

4. The cylindrical steel pickling equipment according to claim 1, characterized in that: The other end of the slide bar (142) is fixedly connected to the outer surface of the semi-circular scraper (144), and a fixing block (146) is fixedly connected to the outer surface of the cylindrical steel pickling tank (11), and a sleeve (147) is fixedly connected to the outer surface of the fixing block (146).

5. The cylindrical steel pickling equipment according to claim 1, characterized in that: The motor three (148) is located on the inner wall of the casing (147). One end of the tension anti-corrosion rope (145) is fixedly connected to the outside of the output end of the motor three (148), and the other end of the tension anti-corrosion rope (145) is fixedly connected to the two sides of the semi-circular scraper (144).

6. The cylindrical steel pickling equipment according to claim 1, characterized in that: The two ends of the elastic strip (a1) are fixedly connected to the two end surfaces of the semi-circular scraper (144), the outer surface of the extrusion strip (a2) is fixedly connected to the inner wall of the elastic strip (a1), and the outer surface of the liquid collection shell (a3) ​​is fixedly connected to the outer surface of the limiting plate (141).

7. The cylindrical steel pickling equipment according to claim 2, characterized in that: The bottom outer surface of the second motor (131) is detachably mounted on the top outer surface of the cylindrical steel conveying shell (13). The inner wall of the snap ring (132) is fixedly connected to the outer surface of the output end of the second motor (131). The outer surface of the elastic soft block (133) is fixedly connected to the outer surface of the snap ring (132). The other side surface of the elastic soft block (133) is fixedly connected to the inner wall of the extrusion soft body (134). The anti-slip strip (135) is positioned on the outer surface of the extrusion soft body (134).

8. The cylindrical steel pickling equipment according to claim 2, characterized in that: A motor (111) is fixedly installed on the outer surface of the cylindrical steel pickling tank (11), and a rotating roller (113) is movably sleeved on the outer surface of the cylindrical steel pickling tank (11). A conveyor belt (112) is movably sleeved on the outer surface of the output end of the motor (111) and the outer surface of the rotating roller (113).

9. The cylindrical steel pickling equipment according to claim 2, characterized in that: The inner surface of the acid-resistant layer (114) is movably sleeved on the outer surface of the rotating roller (113). The position of the limiting disk (115) is set on the outer surface of the acid-resistant layer (114). The two ends of the elastic wear-resistant strip (116) are fixedly connected to the inner middle position of the limiting disk (115). The inner bottom wall of the cylindrical steel pickling tank (11) is provided with (117).

10. The cylindrical steel pickling equipment according to claim 2, characterized in that: A liquid extractor (121) is fixedly installed on the top right edge of the closed top cover (12). A suction pipe (122) extending to the bottom wall of the inner side of the cylindrical steel pickling tank (11) is fixedly connected to the input end of the liquid extractor (121). A spray hole (123) is provided on the bottom surface of the closed top cover (12), and the output end of the liquid extractor (121) is fixedly connected to the outer surface of the spray hole (123).

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