Multi-turn-back type strip steel cleaning device

Abstract

A multi-turn-back type strip steel cleaning device belongs to the technical field of strip steel processing equipment and comprises a cleaning tank used for containing alkali wash liquor, a first clamping roller is arranged at the inlet end of the cleaning tank, a second clamping roller is arranged at the outlet end of the cleaning tank, and a plurality of transmission rollers used for changing the conveying direction of strip steel are arranged in the cleaning tank. The strip steel below the liquid level forms turning sections with different heights between two adjacent transmission rollers, a V-shaped cleaning channel is formed between two adjacent turning sections, the opening ends of two adjacent V-shaped cleaning channels are opposite, and roller brushes which are in contact with the two wall surfaces of the V-shaped cleaning channels at the same time are arranged in the V-shaped cleaning channels; the outlet end of the cleaning tank extends outwards to be provided with a platform inclining upwards, a conveying roller set is arranged on the platform, a third clamping roller is arranged at the tail end of the conveying roller set, a slope allowing the strip steel to incline upwards is formed between the third clamping roller and the second clamping roller, and an air spraying device used for blowing away water on the surface of the strip steel is arranged above the conveying roller set. And the retention time of the steel strip in the alkali wash solution is prolonged, so that oil stains on the surface of the steel strip are removed.

Description

Technical Field

[0001] This utility model relates to the technical field of strip steel processing equipment, specifically a multi-folding strip steel cleaning device. Background Technology

[0002] Steel strip, also known as steel strip, is a narrow and long steel plate produced by steel rolling mills to meet the needs of industrialized production of various metal or mechanical products in different industrial sectors. Before heat treatment, the oil film and stains on the surface of the steel strip need to be removed by alkaline washing and other treatments to remove the stains and oil film, and then the heat treatment process can be carried out.

[0003] Currently, the main method for cleaning steel strips is to immerse them in a cleaning tank filled with alkaline cleaning solution to remove oil stains from the surface of the steel strip. However, this cleaning method results in a relatively short time that the steel strip stays in the alkaline cleaning solution, leading to an unsatisfactory cleaning effect and an inability to completely remove the oil stains from the surface of the steel strip. Utility Model Content

[0004] To address the issue of the relatively short residence time of steel strips in alkaline washing solutions in existing technologies, this invention provides a multi-folding steel strip cleaning device that increases the residence time of the steel strip in the alkaline washing solution, thereby removing oil stains from the surface of the steel strip.

[0005] To achieve the above objectives, the specific solution adopted by this utility model is as follows: a multi-folding strip steel cleaning device includes a cleaning tank for holding alkaline washing solution. A first clamping roller is provided at the inlet end of the cleaning tank, and a second clamping roller is provided at the outlet end of the cleaning tank. Multiple transmission rollers are provided inside the cleaning tank for changing the transmission direction of the strip steel. The strip steel below the surface of the alkaline washing solution forms turning sections of different heights between two adjacent transmission rollers, and a V-shaped cleaning channel is formed between two adjacent turning sections. The opening ends of two adjacent V-shaped cleaning channels are opposite. Roller brushes that simultaneously contact the two walls of the V-shaped cleaning channel are provided inside the V-shaped cleaning channel. An upwardly inclined platform is provided on the outer side of the outlet end of the cleaning tank. A conveying roller group is provided on the platform. A third clamping roller is provided at the end of the conveying roller group. A slope for the strip steel to tilt upward is formed between the third clamping roller and the second clamping roller. An air jet device for blowing away moisture on the surface of the strip steel is provided above the conveying roller group.

[0006] As an optimized solution of the above-mentioned multi-fold strip cleaning device: a first limiting plate and a second limiting plate are respectively provided on both sides of the conveying roller group, and a drying channel extending along the strip conveying direction is formed between the first limiting plate and the second limiting plate; the drying channel includes a shrinking part, a maintaining part and an expanding part.

[0007] As another optimized solution for the above-mentioned multi-fold strip cleaning device: the width of the shrinkage section gradually shrinks to 90% of the strip width along the conveying direction of the conveyor roller group.

[0008] As another optimized solution for the above-mentioned multi-fold strip cleaning device: the width of the maintaining part is equal to the minimum width of the contracting part, and the maintaining part and the contracting part are connected.

[0009] As another optimized solution for the above-mentioned multi-fold strip cleaning device: the width of the expansion section gradually expands along the conveying direction of the conveying roller group, and the maximum width is less than the width of the strip.

[0010] As another optimized solution for the aforementioned multi-fold strip cleaning device, a roller brush that contacts the strip surface is located below the turning section at the lowest point of the cleaning tank.

[0011] As another optimized solution for the above-mentioned multi-fold strip cleaning device: the two sides of the conveyor roller group are coaxially provided with annular grooves, the bottoms of the first limiting plate and the second limiting plate are both located in the annular grooves, and the bottoms of the first limiting plate and the second limiting plate are not higher than the bottom of the drying channel.

[0012] As another optimized solution for the aforementioned multi-fold strip steel cleaning device: both the first limiting plate and the second limiting plate are fixedly connected to the platform via fixing rods.

[0013] As another optimized solution of the above-mentioned multi-return strip cleaning device: the jet device includes multiple jet heads and air guide pipes; one end of the air guide pipe is connected to multiple jet heads, and the other end is connected to the gas output end.

[0014] As another optimized solution for the above-mentioned multi-return strip cleaning device: the multiple jet heads are divided into two rows and distributed along the height direction of the jet device, and the angle between the jet head at the higher position and the jet device is smaller than the angle between the jet head at the lower position and the jet device.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) This utility model provides a multi-folding strip steel cleaning device, which enables the strip steel to achieve multi-folding motion in a limited space by forming a V-shaped cleaning channel under the alkaline washing liquid through multiple transmission rollers, greatly extending the contact time between the strip steel and the alkaline washing liquid, and effectively removing stubborn oil stains and oxide layers.

[0017] 2) The opening ends of adjacent V-shaped cleaning channels are designed in opposite directions. Combined with the bidirectional contact between the roller brush and the strip surface, the blind spots of traditional straight cleaning can be eliminated, especially for the edges and corners of the strip and bending parts, to achieve dynamic brushing and strengthening.

[0018] 3) The jetting device uses two rows of jet heads set at different heights, with the jet head at the higher position having a smaller angle than the jet head at the lower position, forming an upper and lower cross airflow coverage, which simultaneously blows the upper and lower surfaces of the strip steel, significantly reducing water stains. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of a multi-return strip cleaning device;

[0020] Figure 2 This is a cross-sectional view of a strip steel cleaning device;

[0021] Figure 3 This is a top view of the drying channel;

[0022] Figure 4 This is a schematic diagram of the platform's structure;

[0023] Figure 5 This is a cross-sectional view of the first limiting plate embedded in the annular groove;

[0024] Reference numerals: 1. Cleaning tank; 101. First clamping roller; 102. Second clamping roller; 103. Transmission roller; 104. Roller brush; 2. Strip steel; 201. Turning section; 3. V-shaped cleaning channel; 4. Platform; 401. Conveyor roller group; 402. Third clamping roller; 5. Air jet device; 501. Air jet head; 502. Air guide pipe; 6. First limiting plate; 7. Second limiting plate; 8. Drying channel; 801. Contraction section; 802. Holding section; 803. Expansion section; 9. Annular groove; 10. Fixing rod. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art.

[0026] Example 1

[0027] A multi-folding strip steel 2 cleaning device includes a cleaning tank 1 for holding alkaline washing solution. The inlet end of the cleaning tank 1 is provided with a first clamping roller 101 and the outlet end of the cleaning tank 1 is provided with a second clamping roller 102. The main function of the first clamping roller 101 and the second clamping roller 102 is to clamp the strip steel 2 to ensure that the strip steel 2 enters and leaves the cleaning tank 1 stably during the cleaning process.

[0028] The cleaning tank 1 is equipped with multiple drive rollers 103 for changing the transmission direction of the strip steel 2. The strip steel 2, positioned below the surface of the alkaline washing solution, forms turning sections 201 of varying heights between adjacent drive rollers 103. When the strip steel 2 enters the cleaning tank 1 from the inlet, it first passes through the first clamping roller 101, and then, under the action of the first drive roller 103, its transmission direction changes, forming the first turning section 201. Subsequently, the strip steel 2 continues to be transmitted between adjacent drive rollers 103, sequentially forming multiple turning sections 201 of different heights. This multi-fold transmission method increases the immersion time and cleaning effect of the strip steel 2 in the alkaline washing solution.

[0029] A V-shaped cleaning channel 3 is formed between two adjacent turning sections 201, with the opening ends of the two adjacent V-shaped cleaning channels 3 facing opposite directions. A roller brush 104 is installed within the V-shaped cleaning channel 3, simultaneously contacting both of its walls. Below the lowest turning section 201 in the cleaning tank 1, a roller brush 104 is also installed, contacting the surface of the strip 2. The function of the roller brush 104 is to scrub the surface of the strip 2 during its transport, removing dirt and impurities. When the strip 2 is transported within the V-shaped cleaning channel 3, the roller brush 104 is in close contact with the surface of the strip 2 and rotates as the strip 2 moves, thereby achieving the scrubbing of the strip 2's surface. In this embodiment, the roller brush 104 can be made of nylon, which has good wear resistance and cleaning effect.

[0030] The outlet end of the cleaning tank 1 is provided with an upwardly inclined platform 4. A conveyor roller assembly 401 is mounted on the platform 4, and a third clamping roller 402 is located at the end of the conveyor roller assembly 401. The third clamping roller 402 and the second clamping roller 102 form a ramp for the strip steel 2 to tilt upwards. The main function of the conveyor roller assembly 401 is to transport the cleaned strip steel 2 out of the cleaning tank 1 and to stably transfer it to subsequent processes via the third clamping roller 402. In this embodiment, the conveyor roller assembly 401 can be made of stainless steel, which has good corrosion resistance and strength.

[0031] Above the conveyor roller assembly 401 is an air jetting device 5 for blowing away moisture from the surface of the strip steel 2. The air jetting device 5 includes multiple air jet heads 501 and an air guide pipe 502. One end of the air guide pipe 502 is connected to each of the multiple air jet heads 501, and the other end is connected to a gas output end. The multiple air jet heads 501 are arranged in two rows along the height direction of the air jetting device 5, with the angle between the higher air jet heads 501 and the air jetting device 5 being smaller than the angle between the lower air jet heads 501 and the air jetting device 5. In this embodiment, the gas output end can be connected to a compressed air source, and compressed air is delivered to the air jet heads 501 through the air guide pipe 502, and then ejected from the air jet heads 501 to blow away moisture from the surface of the strip steel 2. The air jet heads 501 can be made of stainless steel, which has good corrosion resistance and durability.

[0032] The above are the basic embodiments of this utility model. Further improvements, optimizations, and limitations can be made based on the above to obtain the following embodiments:

[0033] Example 2

[0034] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1, but the improvement lies in:

[0035] The conveyor roller assembly 401 is provided with a first limiting plate 6 and a second limiting plate 7 on both sides, and both the first limiting plate 6 and the second limiting plate 7 are fixedly connected to the platform 4 by fixing rods 10. In this utility model, there are several fixing rods 10, which can prevent the first limiting plate 6 or the second limiting plate 7 from shifting, and ensure the stability of the drying channel 8.

[0036] The first limiting plate 6 and the second limiting plate 7 form a drying channel 8 extending along the conveying direction of the strip 2. The drying channel 8 includes a shrinking section 801, a holding section 802, and an expanding section 803. The width of the shrinking section 801 gradually shrinks along the conveying direction of the conveyor roller group 401 to 90% of the width of the strip 2. The strip 2 is constrained by the shrinking section 801, and the surface of the strip 2 gradually bulges upward or downward to facilitate subsequent processing operations. The width of the holding section 802 is equal to the minimum width of the shrinking section 801, and the holding section 802 is connected to the shrinking section 801. The holding section 802 can make the strip 2 conveyed smoothly in the adjusted state, preventing the strip 2 from gradually returning to its original state during the conveying process. The width of the expanding section 803 gradually expands along the conveying direction of the conveyor roller group 401, and the maximum width is less than the width of the strip 2, so that the strip 2 returns to its original state before heat treatment.

[0037] Example 3

[0038] This embodiment is an improvement on embodiment 2. Its main structure is the same as that of embodiment 1, but the improvement lies in:

[0039] The conveyor roller assembly 401 has annular grooves 9 coaxially arranged on both sides. The bottoms of the first limiting plate 6 and the second limiting plate 7 are both located within the annular grooves 9, and the bottoms of the first limiting plate 6 and the second limiting plate 7 are not higher than the bottom of the drying channel 8. This design can prevent the strip steel 2 from shifting out from the bottom of the first limiting plate 6 or the second limiting plate 7 without being constrained by the drying channel 8.

[0040] The working process of the multi-fold reversible strip steel cleaning device is as follows: In actual operation, the strip steel 2 enters from the inlet end of the cleaning tank 1, first passing through the first clamping roller 101, and then, under the action of multiple transmission rollers 103, forming multiple turning sections 201 of different heights, and is cleaned within the V-shaped cleaning channel 3. After cleaning, the strip steel 2 leaves the cleaning tank 1 through the second clamping roller 102 and enters the upwardly inclined platform 4, where it is conveyed upwardly under the action of the conveyor roller group 401. During the conveying process, the jet nozzle 501 of the jet device 5 sprays compressed air to disperse the moisture on the surface of the strip steel 2. Finally, the strip steel 2 enters the subsequent process through the third clamping roller 402. The entire cleaning and drying process is highly automated, with good cleaning effect, effectively improving the surface quality of the strip steel 2.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-folding strip steel cleaning device, comprising a cleaning tank (1) for holding alkaline washing solution, wherein a first clamping roller (101) is provided at the inlet end of the cleaning tank (1), a second clamping roller (102) is provided at the outlet end of the cleaning tank (1), and a transmission roller (103) for changing the conveying direction of the strip steel (2) is provided inside the cleaning tank (1), characterized in that: The drive roller (103) is multiple, the strip steel (2) below the caustic soda liquid level forms different height turning sections (201) between adjacent two drive rollers (103), adjacent two turning sections (201) form V-shaped cleaning channels (3), the opening ends of adjacent two V-shaped cleaning channels (3) are opposite, the V-shaped cleaning channel (3) is equipped with roller brushes (104) which contact two wall surfaces simultaneously; the cleaning tank (1) outlet end is externally provided with an upwardly inclined platform (4), the platform (4) is provided with a conveying roller group (401), the end of the conveying roller group (401) is provided with a third clamping roller (402), the third clamping roller (402) and the second clamping roller (102) form an upwardly inclined slope for the strip steel (2), the conveying roller group (401) is provided with a gas blowing device (5) above for blowing away the water on the surface of the strip steel (2).

2. A multi-return belt cleaning device as claimed in claim 1, characterized in that: The two sides of the conveying roller group (401) are respectively provided with a first limiting plate (6) and a second limiting plate (7), the first limiting plate (6) and the second limiting plate (7) constitute a blow-drying channel (8) extending along the conveying direction of the strip steel (2); the blow-drying channel (8) comprises a contraction part (801), a maintenance part (802) and an expansion part (803).

3. A multi-return-path belt cleaning device as claimed in claim 2, characterized in that: The width of the contraction part (801) gradually shrinks to 90% of the width of the strip steel (2) along the conveying direction of the conveying roller group (401).

4. A multi-return-path belt cleaning device as claimed in claim 2, characterized in that: The width of the maintenance part (802) is equal to the minimum width of the contraction part (801), and the maintenance part (802) is communicated with the contraction part (801).

5. A multi-return-path belt cleaning device as claimed in claim 2, characterized in that: The width of the expansion part (803) gradually expands along the conveying direction of the conveying roller group (401), and the maximum width part is less than the width of the strip steel (2).

6. A multi-return-path belt cleaning device as claimed in claim 1, characterized in that: The roller brush (104) in contact with the surface of the strip steel (2) is arranged below the turning section (201) at the lowest position in the cleaning tank (1).

7. A multi-return belt cleaning device as claimed in claim 1, characterized in that: The two sides of the conveying roller group (401) are coaxially provided with annular grooves (9), the bottoms of the first limiting plate (6) and the second limiting plate (7) are located in the annular grooves (9), and the bottoms of the first limiting plate (6) and the second limiting plate (7) are not higher than the bottom of the blow-drying channel (8).

8. A multi-return-path belt cleaning device as claimed in claim 7, characterized in that: The first limiting plate (6) and the second limiting plate (7) are fixedly connected with the platform (4) through fixing rods (10).

9. A multi-return-path belt cleaning device as claimed in claim 1, characterized in that: The gas blowing device (5) comprises a plurality of gas blowing heads (501) and a gas guide pipe (502); one end of the gas guide pipe (502) is communicated with the plurality of gas blowing heads (501), and the other end is communicated with a gas output end.

10. A multi-return-path belt cleaning device as claimed in claim 9, characterized in that: The plurality of gas blowing heads (501) are divided into two rows and distributed along the height direction of the gas blowing device (5), the included angle between the high gas blowing head (501) and the gas blowing device (5) is less than the included angle between the low gas blowing head (501) and the gas blowing device (5).

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