Combined rust removal device for steel strip

Abstract

The present invention discloses a combined rust removal device for steel strips, and relates to the technical field of steel strip rust removal. The present invention comprises a lower rust removal box, an upper rust removal box, a driving cylinder, and an adjusting bolt group; the upper rust removal box is arranged above the lower rust removal box in a mutually parallel manner; the two end sides of the lower rust removal box are connected to the two end sides of the upper rust removal box by four mutually parallel cranks; the cranks are tilted when the lower end of the upper rust removal box contacts the upper end of the lower rust removal box; the telescopic end of the driving cylinder is hinged to the upper rust removal box; the base end of the driving cylinder is hinged to the lower rust removal box; and a row of lower scrapers are plugged and installed on the lower rust removal box. In the process of the steel strip passing through the combined rust removal device, the rust removal is combined in a manner of alternating scraping and grinding, and the rust removal process is gentle and efficient. The adjusting bolt group adjusts the distance between the lower rust removal box and the upper rust removal box, the distance between the upper end face of the external hexagonal bolt and the upper end face of the lower rust removal box, and the thickness of the steel strip that can pass between the lower scraper and the upper scraper.

Description

Technical Field

[0001] The invention belongs to the technical field of steel strip rust removal, and in particular relates to a combined rust removal device for steel strips. Background Art

[0002] When the steel strip is not used for a long time, a chemical reaction will occur due to the humid air, which will produce rust on the surface of the steel strip, which will affect its normal use. Therefore, various types of rust removal devices have appeared on the market, but they are generally acid rust removal devices. The rust is removed by spraying an acidic solution on the steel strip, and then the acid liquid is diluted by rinsing with clean water. This often causes secondary corrosion of the steel strip due to incomplete cleaning. Acid washing no longer meets environmental protection requirements and has now been abandoned. Nowadays, when removing rust from steel strips, most of the rust is removed by grinding the surface of the steel strip with a grinding wheel. During the grinding process, the surface of the steel strip is continuously polished by multiple diamond grinding wheels with strong friction. The heat is relatively concentrated during the process. The thickness of the steel strip itself is relatively thin and the surface roughness is relatively low. The strong grinding of the grinding wheel will increase the surface roughness of the steel strip, which needs to be polished later. In order to solve this problem, the present application document provides a combined rust removal device for steel strips. Summary of the Invention

[0003] The purpose of the present invention is to provide a combined rust removal device for steel strips, which solves the problem that the surface of the steel strip is not gentle enough during a single rust removal process by combining a lower rust removal box, an upper rust removal box, a driving cylinder, an adjustment bolt group, a crank, a lower scraper, an upper scraper and polishing sand.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention discloses a combined rust removal device for steel strips, comprising a lower rust removal box, an upper rust removal box, a driving cylinder, and an adjusting bolt group; the upper rust removal box is arranged above the lower rust removal box in a mutually parallel manner; the two ends of the lower rust removal box are connected to the two ends of the upper rust removal box by four cranks arranged in parallel with each other; when the lower end of the upper rust removal box contacts the upper end of the lower rust removal box, the cranks are arranged tilted; the telescopic end of the driving cylinder is hinged to the upper rust removal box; the base end of the driving cylinder is hinged to the lower rust removal box; a series of bolts are plugged and installed on the lower rust removal box Lower scraper; a row of upper scrapers is fixed to the upper rust removal box by bolts; the lower scrapers and the corresponding upper scrapers are arranged in a V shape, and the opposite ends of the lower scrapers and the upper scrapers are provided with beveled blades; a steel belt passes between a row of lower scrapers and a row of upper scrapers; four adjustment bolt groups are installed on the lower rust removal box, and when the driving cylinder is retracted, the upper ends of the four adjustment bolt groups abut against the lower end of the upper rust removal box; polishing sand is filled between two adjacent lower scrapers of the lower rust removal box and between two adjacent upper scrapers of the upper rust removal box. The lower rust removal box, the upper rust removal box and the four cranks arranged parallel to each other form a parallelogram structure as a whole. The spacing between the lower rust removal box and the upper rust removal box is adjustable. The driving cylinder is the driving power. The four adjustment bolt groups synchronously adjust the minimum distance between the lower rust removal box and the upper rust removal box. In actual use, it is adjusted according to the thickness of the steel belt.

[0006] As a preferred technical solution of the present invention, the lower rust removal box includes two oppositely arranged right-angled trapezoidal side frame plates, and the right-angled trapezoidal side frame plates are located on the inner side; the lower surfaces of the two right-angled trapezoidal side frame plates are connected and fixed by three rectangular strips; a bottom plate is fixed on the lower surfaces of the two right-angled trapezoidal side frame plates and located between two adjacent rectangular strips; the two right-angled trapezoidal side frame plates have a row of slots on the opposite inclined surfaces that are plugged into the lower scraper, the slots are inclined relative to the horizontal plane, and the slots are inclined toward the output direction of the steel strip; the upper surface of the right-angled trapezoidal side frame plates has two stepped threaded blind holes that cooperate with the adjustment bolt group. The inclined surfaces of the right-angled trapezoidal side frame plates on both sides are conducive to gathering the polishing sand to the peripheral side of the steel strip on the lower scraper in the center area, the lower scraper scrapes the thicker oxide layer on the lower surface of the steel strip, and the polishing sand grinds the oxide layer that is tightly attached to the surface of the steel strip, and the scraping and grinding are carried out simultaneously.

[0007] As a preferred technical solution of the present invention, a vertically positioned limit stop is fixed to the outer side of the right-angled trapezoidal side frame plate; when the crank swings to a vertical position, it engages with the limit stop to limit the position. The telescopic end of the drive cylinder extends to lift the upper rust removal box, and the crank stops swinging after contacting the limit stop, limiting the vertical position to the highest point.

[0008] As a preferred technical solution of the present invention, the upper rust removal box comprises a rectangular outer frame; a row of mounting brackets for the upper scrapers is fixed to the inner side of the rectangular outer frame; the lower half of the mounting brackets is tilted and points in the direction of the steel strip output. The upper scrapers scrape the thicker oxide layer on the upper surface of the steel strip, while the polishing sand grinds the oxide layer that is tightly adhered to the steel strip surface, and the scraping and grinding are performed simultaneously.

[0009] As a preferred technical solution of the present invention, the adjustment bolt assembly includes an external hexagonal bolt and an internal hexagonal bolt, with the external hexagonal bolt's threading direction opposite to the internal hexagonal bolt's. A stepped through-hole for the internal hexagonal bolt is defined in the center of the external hexagonal bolt. The distance between the upper end face of the external hexagonal bolt and the upper end face of the lower rust removal box is determined to allow the thickness of the steel strip to pass between the lower and upper scrapers. The external hexagonal bolt is used for height adjustment, while the internal hexagonal bolt is used for fixing.

[0010] As a preferred technical solution of the present invention, the combined rust removal device is installed in a trough-type mounting frame; the trough-type mounting frame comprises a rectangular trough with an upper opening; a plurality of fixed support legs are fixed to the lower surface of the rectangular trough; and an inlet and outlet hole for the steel strip is provided at each end of the rectangular trough in the longitudinal direction. The combined rust removal device is installed in the trough-type mounting frame to prevent the polishing sand from being scattered during the rust removal process.

[0011] As a preferred technical solution of the present invention, a vibrator is fixed to the lower surface of the rectangular trough, and a cover plate is installed on the upper end of the rectangular trough via a hinge. The cover plate can prevent the polishing sand from splashing.

[0012] The present invention has the following beneficial effects:

[0013] The present invention forms a steel strip surface rust scraping structure with adjustable upper and lower heights by combining a lower rust removal box, an upper rust removal box, a driving cylinder, an adjusting bolt group, a crank, a lower scraper and an upper scraper, and is assisted by polishing with polishing sand. When the steel strip passes through the combined rust removal device, rust is removed by alternating scraping and grinding, and the rust removal process is gentle and efficient.

[0014] The present invention adjusts the distance between the lower rust removal box and the upper rust removal box by adjusting the bolt group, the distance between the upper end surface of the outer hexagonal bolt and the upper end surface of the lower rust removal box, and the thickness of the steel belt that allows the lower scraper and the upper scraper to pass through. The outer hexagonal bolt is used for height adjustment and the inner hexagonal bolt is used for fixing for easy adjustment and use.

[0015] The present invention prevents polishing sand from scattering during the rust removal process by installing the combined rust removal device in a trough-type mounting frame and cooperating with a vibrator. At the same time, the overall polishing sand reduces cavities under the action of vibration, thereby increasing the surface polishing sand coverage rate during the steel strip polishing process and improving the polishing efficiency.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of the combined rust removal device of the present invention.

[0019] Figure 2 It is the front view of the combined rust removal device.

[0020] Figure 3 It is the left view of the combined rust removal device.

[0021] Figure 4 for Figure 2 Cross-sectional view at AA in the middle.

[0022] Figure 5 for Figure 4 A partial enlarged view of point B in the middle.

[0023] Figure 6 Schematic diagram of the structure of the adjustment bolt group.

[0024] Figure 7 It is the structural diagram of the lower rust removal box.

[0025] Figure 8 It is the structural diagram of the upper rust removal box.

[0026] Figure 9 This is a schematic diagram of the combined rust removal device processing steel strip.

[0027] Figure 10 for Figure 9 A partial enlarged view of point A in the middle.

[0028] Figure 11 This is a structural diagram of the combined rust removal device installed in a trough-type mounting frame.

[0029] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0030] 1-Lower rust removal box, 2-Upper rust removal box, 3-Driving cylinder, 4-Adjusting bolt group, 5-Crank, 6-Lower scraper, 7-Upper scraper, 8-Polishing sand, 9-Steel belt, 10-Trough mounting frame, 101-Rectangular trough body, 102-Fixed support leg, 103-Inlet and outlet holes, 11-Right-angle trapezoidal side frame plate, 12-Rectangular slats, 13-Base plate, 14-Slot, 15-Step threaded blind hole, 16-Limit stopper, 21-Rectangular outer frame, 22-Mounting frame, 41-External hexagonal bolt, 42-Inner hexagonal bolt, 411-Step through hole. Implementation Method

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Specific embodiments

[0032] See also Figure 1-10 As shown, the present invention is a combined rust removal device for steel strips, comprising a lower rust removal box 1, an upper rust removal box 2, a driving cylinder 3, and an adjusting bolt group 4; the upper rust removal box 2 is arranged above the lower rust removal box 1 in a mutually parallel manner; the two ends of the lower rust removal box 1 are connected to the two ends of the upper rust removal box 2 by four cranks 5 arranged in parallel with each other; the cranks 5 are tilted when the lower end of the upper rust removal box 2 contacts the upper end of the lower rust removal box 1; the telescopic end of the driving cylinder 3 is hinged to the upper rust removal box 2; the base end of the driving cylinder 3 is hinged to the lower rust removal box 1; the lower rust removal box 1 is plugged and installed A row of lower scrapers 6; a row of upper scrapers 7 are bolted to the upper rust removal box 2; the lower scrapers 6 and the corresponding upper scrapers 7 are arranged in a V shape, and the opposite ends of the lower scrapers 6 and upper scrapers 7 are each provided with a beveled edge portion; a steel belt 9 passes between the row of lower scrapers 6 and the row of upper scrapers 7; four adjustment bolt groups 4 are installed on the lower rust removal box 1, and when the driving cylinder 3 is retracted, the upper ends of the four adjustment bolt groups 4 abut the lower end of the upper rust removal box 2; polishing sand 8 is filled between adjacent lower scrapers 6 of the lower rust removal box 1 and between adjacent upper scrapers 7 of the upper rust removal box 2. The lower rust removal box 1, the upper rust removal box 2, and the four parallel cranks 5 form a parallelogram structure. The spacing between the lower rust removal box 1 and the upper rust removal box 2 is adjustable, and the driving cylinder 3 is used as the driving force. The four adjustment bolt groups 4 synchronously adjust the minimum distance between the lower rust removal box 1 and the upper rust removal box 2, and the actual use is adjusted according to the thickness of the steel belt 9.

[0033] The lower rust removal box 1 serves as the bottom structure, and polishing sand 8 is also stored inside. In order to ensure that the polishing sand 8 can slide smoothly into the side of the wrapped steel strip 9, the specific lower rust removal box 1 includes two oppositely arranged right-angled trapezoidal side frame plates 11, and the right-angled trapezoidal side frame plates 11 are located on the inner side; the lower surfaces of the two right-angled trapezoidal side frame plates 11 are connected and fixed by three rectangular strips 12; a bottom plate 13 is fixed on the lower surface of the two right-angled trapezoidal side frame plates 11 and located between two adjacent rectangular strips 12, and the bottom plate 13 is fixed on the bottom surface. Small holes are provided for sand leakage. Sand in the upper rust removal box 2 flows into the lower rust removal box 1 to compensate for sand leakage. At the same time, the upper rust removal box 2 needs to be replenished with sand during use to achieve fluid replacement of the abrasive. Two right-angled trapezoidal side frame plates 11 have opposing inclined surfaces with a row of slots 14 that plug into and mate with the lower scraper 6. Slots 14 are inclined relative to the horizontal plane and are tilted toward the output direction of the steel strip 9. Two stepped threaded blind holes 15 are provided on the upper surfaces of the right-angled trapezoidal side frame plates 11 to mate with the adjustment bolt group 4. The inclined surfaces of the right-angled trapezoidal side frame plates 11 on both sides facilitate the convergence of polishing sand 8 toward the center area around the steel strip 9 on the lower scraper 6. The lower scraper 6 scrapes the thicker oxide layer on the lower surface of the steel strip 9, while the polishing sand 8 grinds the oxide layer that adheres tightly to the surface of the steel strip 9. Scraping and grinding are performed simultaneously, resulting in gentle and efficient cleaning.

[0034] To limit the upper rust removal box 2 from opening upward, the lower rust removal box 1 has a vertical stopper 16 fixed to the outer side of the right-angled trapezoidal side frame 11. When the crank 5 is swung to the vertical position, it contacts the stopper 16. The telescopic end of the driving cylinder 3 extends to lift the upper rust removal box 2, and the crank 5 stops swinging after contacting the stopper 16.

[0035] The upper rust removal box 2 requires a restocking of polishing sand 8. Specifically, the upper rust removal box 2 comprises a rectangular outer frame 21. A mounting bracket 22 for the upper scraper 7 is fixed to the inner side of the rectangular outer frame 21. The lower half of the mounting bracket 22 is tilted and points in the direction of delivery of the steel strip 9. The upper scraper 7 scrapes the thicker oxide layer on the upper surface of the steel strip 9, while the polishing sand 8 grinds the oxide layer that adheres tightly to the surface of the steel strip 9. The scraping and grinding process is performed simultaneously, resulting in gentle and efficient cleaning.

[0036] The adjustment bolt assembly 4 is used to adjust the distance between the lower rust removal box 1 and the upper rust removal box 2. To ensure stability after adjustment, the adjustment bolt assembly 4 includes an external hexagonal bolt 41 and an internal hexagonal bolt 42. The thread direction of the external hexagonal bolt 41 is opposite to that of the internal hexagonal bolt 42. A stepped through-hole 411 is defined in the center of the external hexagonal bolt 41 for receiving the internal hexagonal bolt 42. The distance between the upper end face of the external hexagonal bolt 41 and the upper end face of the lower rust removal box 1 and the thickness of the steel belt 9 are adjusted to allow for the passage of the lower scraper 6 and the upper scraper 7. The external hexagonal bolt 41 is used for height adjustment, while the internal hexagonal bolt 42 is used for fixing. Specific embodiments

[0037] Based on the first specific embodiment, the difference of this embodiment is that:

[0038] like Figure 11 As shown, in order to prevent the polishing sand 8 from scattering during the rust removal process, the combined rust removal device is installed in a trough-type mounting frame 10; the trough-type mounting frame 10 includes a rectangular trough body 101 with an upper opening; a plurality of fixed support legs 102 are fixed on the lower surface of the rectangular trough body 101; and an inlet and outlet hole 103 for passing the steel belt 9 is respectively opened at both ends in the length direction of the rectangular trough body 101.

[0039] In order to further improve the contact between the polishing sand 8 and the steel strip 9, a vibrator is fixed on the lower surface of the rectangular trough 101. The vibrator is transmitted to the combined rust removal device through agitation. Under the action of vibration, the overall polishing sand 8 reduces the cavities, thereby improving the surface polishing sand 8 coverage rate of the steel strip 9 during the polishing process. In order to further prevent sand splashing, a cover plate is installed on the upper end of the rectangular trough 101 through a hinge.

[0040] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0041] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A combined rust removal device for steel strips, characterized in that: It comprises a lower rust removal box (1), an upper rust removal box (2), a driving cylinder (3), and an adjusting bolt group (4); The upper rust removal box (2) is arranged above the lower rust removal box (1) in a mutually parallel manner; The two end sides of the lower rust removal box (1) and the two end sides of the upper rust removal box (2) are connected via four cranks (5) arranged in parallel with each other; when the lower end of the upper rust removal box (2) contacts the upper end of the lower rust removal box (1), the cranks (5) are arranged tilted; The telescopic end of the driving cylinder (3) is hinged to the upper rust removal box (2); the base end of the driving cylinder (3) is hinged to the lower rust removal box (1); A row of lower scrapers (6) are plugged and installed on the lower rust removal box (1); A row of upper scrapers (7) is fixed to the upper rust removal box (2) by bolts; the lower scrapers (6) and the corresponding upper scrapers (7) are arranged in a V shape, and the opposite ends of the lower scrapers (6) and the upper scrapers (7) are both provided with oblique blades; a steel belt (9) passes between a row of the lower scrapers (6) and a row of the upper scrapers (7); The lower rust removal box (1) is provided with four adjusting bolt groups (4), and when the driving cylinder (3) contracts, the upper ends of the four adjusting bolt groups (4) abut against the lower end of the upper rust removal box (2); Polishing sand (8) is filled between two adjacent lower scrapers (6) of the lower rust removal box (1) and between two adjacent upper scrapers (7) of the upper rust removal box (2); The lower rust removal box (1) includes two oppositely arranged right-angled trapezoidal side frame plates (11), and the right-angled trapezoidal side frame plates (11) are located on the inner side; the lower surfaces of the two right-angled trapezoidal side frame plates (11) are connected and fixed by three rectangular strips (12); a bottom plate (13) is fixed on the lower surfaces of the two right-angled trapezoidal side frame plates (11) and located between two adjacent rectangular strips (12); the two right-angled trapezoidal side frame plates (11) are provided with a row of slots (14) for plugging and matching with the lower scraper (6), the slots (14) are inclined relative to the horizontal plane, and the slots (14) are inclined toward the output direction of the steel strip (9); the upper surface of the right-angled trapezoidal side frame plates (11) is provided with two step threaded blind holes (15) for matching with the adjustment bolt group (4); The upper rust removal box (2) comprises a rectangular outer frame (21); a row of mounting frames (22) for mounting the upper scraper (7) are fixed relative to the inner side surface of the rectangular outer frame (21); the lower half of the mounting frame (22) is tilted and points in the output direction of the steel strip (9).

2. A combined rust removal device for steel strip according to claim 1, characterized in that: A vertically arranged limit block (16) is fixed to the outer side surface of the right-angled trapezoidal side frame plate (11); when the crank (5) is swung to a vertical state, it is in contact with the limit block (16) for limiting position.

3. The combined rust removal device for steel strip according to claim 1, characterized in that: The adjusting bolt group (4) comprises an outer hexagonal bolt (41) and an inner hexagonal bolt (42), wherein the spiral direction of the outer hexagonal bolt (41) is opposite to the spiral direction of the inner hexagonal bolt (42); a stepped through hole (411) for passing the inner hexagonal bolt (42) is provided at the center of the outer hexagonal bolt (41).

4. The combined rust removal device for steel strip according to claim 1, characterized in that: The combined rust removal device is installed in a trough-type mounting frame (10); the trough-type mounting frame (10) comprises a rectangular trough body (101) with an upper opening; a plurality of fixed support legs (102) are fixed to the lower surface of the rectangular trough body (101); and an inlet and outlet hole (103) for passing the steel belt (9) is respectively provided at both ends in the longitudinal direction of the rectangular trough body (101).

5. A combined rust removal device for steel strip according to claim 4, characterized in that: A vibrator is fixed to the lower surface of the rectangular trough body (101); and a cover plate is installed on the upper end of the rectangular trough body (101) via a hinge.

Images