Stainless steel foil descaling device

Abstract

The utility model provides a stainless steel foil descaling device, which relates to the field of stainless steel foil processing, and comprises a guide mechanism arranged at the tail end of a hot mill production line, and polishing brushes attached to the foil are respectively arranged on the two sides of the feeding end and the discharging end of the guide mechanism. A first shot blasting machine and a second shot blasting machine are arranged between the polishing brushes on the same side. According to the stainless steel foil descaling device, the foil is placed above the guide mechanism and is driven by the traction mechanism to move, in the moving process, firstly, oxide, capable of being removed through friction, on the surface is removed through the grinding brush, then the foil is subjected to rough polishing through the first shot blasting machine, and the foil is subjected to fine polishing through the second shot blasting machine; and finally, residues attached to the surface are ground and fall off through a grinding brush, descaling is completed, and the problem that the foil is prone to being oxidized when washed with high-pressure water is solved.

Description

Technical Field

[0001] This utility model relates to the field of descaling technology, specifically a descaling device for stainless steel foil. Background Technology

[0002] When steel is oxidized at high temperatures, a dense oxide scale forms on its surface. Removing this oxide scale is called descaling.

[0003] Existing patent CN216728834U describes a high-efficiency precision rolling descaling unit, which includes a descaling box. The descaling box has openings at both ends, through which the feeding roller conveyor passes. Spray pipes are installed at the upper and lower ends of one side of the descaling box. Several high-pressure water nozzles are evenly distributed on the spray pipes facing the feeding roller conveyor. Adjustable air jet pipes are installed at the upper and lower ends of the other side of the descaling box. Several air jet heads are evenly distributed on the air jet pipes facing the feeding roller conveyor.

[0004] This technical solution involves installing spray pipes and air jet pipes inside the descaling box. After the spray pipes flush the sheet metal with high-pressure water, the sheet metal enters the air jet pipe along the feeding roller conveyor. The air jet nozzles on the air jet pipe blow high-pressure gas onto the sheet metal, thereby blowing away the residual iron oxide scale and achieving a secondary cleaning effect. This significantly improves the efficiency and effectiveness of descaling, bringing great convenience to production. However, even after high-pressure water flushing, it cannot be guaranteed that the air jet will be able to disperse and separate the surface scale. If the water is not dispersed, it will accelerate the corrosion of the sheet metal. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a stainless steel foil descaling device, which solves the problems mentioned in the background art.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a stainless steel foil descaling device, comprising a guide mechanism installed at the tail end of a hot rolling mill production line, wherein grinding brushes that are in contact with the foil are respectively installed on both sides of the feed end and the discharge end of the guide mechanism, and a first shot blasting machine and a second shot blasting machine are respectively installed between the grinding brushes on the same side, wherein the first shot blasting machine near the feed end blasts cast shot and cut shot, and the second shot blasting machine near the discharge end blasts cast shot.

[0008] Furthermore, the first shot blasting machine and the second shot blasting machine are collectively referred to as shot blasting machines, and the shot blasting machine has a shot blasting velocity of 54-63 m / s and a flow rate of 7-10 kg / m³. 2 .

[0009] Furthermore, the first shot blasting machine has a particle size of 800–1000 μm, and the second shot blasting machine has a particle size of 500–600 μm.

[0010] Furthermore, the ratio of cut shot to cast shot is 4:1 to 5:1, and the diameter of cut shot is smaller than that of cast shot.

[0011] Furthermore, a recycling mechanism is provided below both the first shot blasting machine and the second shot blasting machine. The recycling mechanism of the first shot blasting machine includes a vibrating inclined screen with an aperture between that of cast shot and shot blasting. A partition is provided below the vibrating inclined screen to separate the screened material. The vibrating inclined screen and the partition are located behind the air separation unit of the recycling mechanism.

[0012] Furthermore, both the first shot blasting machine and the second shot blasting machine are equipped with a lifting mechanism. The lifting mechanism is connected and communicates with the recycling mechanism. The lifting mechanism of the first shot blasting machine includes two storage chambers. The two storage chambers are respectively connected to the two discharge ports of the recycling mechanism. The lifting mechanism is located inside the two storage chambers.

[0013] Furthermore, the lifting mechanism is a screw elevator, which includes a threaded lead section rotatably connected inside the storage bin. A motor that drives the threaded lead section to rotate is fixedly installed at the top of the storage bin, and the speed ratio of the two motors is 4:1 to 5:1.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This stainless steel foil descaling device places the foil above the guide mechanism and moves it by the traction mechanism. During the movement, the oxides that can be removed by friction are first removed by the grinding brush. Then, the foil is coarsely blasted by the first shot blasting machine and finely blasted by the second shot blasting machine. This allows the oxides to be removed by impact. Finally, the residue attached to the surface is ground off by the grinding brush, thus completing the descaling and avoiding the problem of foil oxidation caused by high-pressure water washing.

[0016] 2. The stainless steel foil descaling device is equipped with a lifting mechanism in both the first and second shot blasting machines. The lifting mechanism is connected and communicates with the recycling mechanism. The lifting mechanism lifts the shot above the nozzle and mixes it through the mixing device. The lifting mechanism of the first shot blasting machine includes two storage chambers, which are respectively connected to the two discharge ports of the recycling mechanism. The lifting mechanism is located inside the two storage chambers. This configuration enables the recycling of shot. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection of the guide mechanism of this utility model;

[0019] Figure 3This is a schematic diagram of the shot blasting machine of this utility model;

[0020] Figure 4 This is a half-sectional schematic diagram of the lifting mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection of the vibrating inclined screen of this utility model.

[0022] Among them, 1. guiding mechanism; 2. grinding brush; 3. first shot blasting machine; 4. second shot blasting machine; 5. recycling mechanism; 6. vibrating inclined screen; 7. partition plate; 8. lifting mechanism; 9. storage bin; 801. threaded lead section; 802. motor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] See Figures 1-5 A stainless steel foil descaling device includes a guide mechanism 1 installed at the tail end of a hot rolling mill production line. The guide mechanism 1 includes a roller track that can be spaced and limited. Grinding brushes 2 that are in contact with the foil are respectively installed on both sides of the feed end and the discharge end of the guide mechanism 1. A first shot blasting machine 3 and a second shot blasting machine 4 are respectively installed between the grinding brushes 2 on the same side. The first shot blasting machine 3 near the feed end is used to blast cast shot and cut shot, and the second shot blasting machine 4 near the discharge end is used to blast cast shot.

[0025] The first shot blasting machine 3 and the second shot blasting machine 4 are collectively referred to as shot blasting machines. The shot blasting machine has a shot blasting velocity of 54-63 m / s and a flow rate of 7-10 kg / m³. 2 Shot blasting machines use high-speed airflow to blow shot at foil materials, causing them to collide and descale. The outlet of the shot blasting machine needs to be fitted with a rubber cover that fits the foil material to prevent shot from being discharged. By limiting the speed and flow rate, it can be ensured that the shot thrown out by the shot blasting machine has a certain kinetic energy to work.

[0026] The first shot blasting machine 3 has a particle size of 800-1000 μm. It is used for rough blasting, so the particle size can be relatively large. The second shot blasting machine 4 has a particle size of 500-600 μm. It is used for fine blasting, so the particle size is relatively small.

[0027] The ratio of cut shot to cast shot is 4:1 to 5:1. The diameter of cut shot is smaller than that of cast shot. The production cost of cut shot is lower than that of cast shot. The operating cost of the equipment can be reduced by adjusting the shot blasting dosage. The particle size of cut shot and cast shot can be limited to facilitate screening of the two.

[0028] Both the first shot blasting machine 3 and the second shot blasting machine 4 are equipped with a recovery mechanism 5 below them. The recovery mechanism 5 includes an inclined collection hopper located below the outlet. The collection hopper collects the shot and lifts it to a certain height, then allows the shot to fall freely. During the fall, a blower and a collection hood are set up to collect dust. The recovery mechanism 5 of the first shot blasting machine 3 includes a vibrating inclined screen 6 with an aperture between that of cast shot and shot. Below the vibrating inclined screen 6 is a partition 7 that separates the screened material. By filtering through the vibrating inclined screen 6, small-diameter shot can fall to one side of the partition 7, while large-diameter shot does not pass through the vibrating inclined screen 6 and falls to the other side of the partition 7. One end of the vibrating inclined screen 6 is hinged to the recovery mechanism 5, and the other end is equipped with a telescopic sleeve that can move up and down. The vibrating inclined screen 6 and the partition 7 are located behind the air separation unit of the recovery mechanism 5.

[0029] Both the first shot blasting machine 3 and the second shot blasting machine 4 are equipped with a lifting mechanism 8. The lifting mechanism 8 is connected and communicates with the recovery mechanism 5. The lifting mechanism 8 lifts the shot above the nozzle and mixes it through the mixing device. The lifting mechanism 8 of the first shot blasting machine 3 includes two storage chambers 9. The two storage chambers 9 are respectively connected to the two discharge ports of the recovery mechanism 5. The lifting mechanism 8 is located inside the two storage chambers 9.

[0030] The lifting mechanism 8 is a screw elevator, which includes a threaded lead section 801 rotatably connected inside the storage chamber 9. A motor 802 that drives the threaded lead section 801 to rotate is fixedly installed at the top of the storage chamber 9. The speed ratio of the two motors 802 is 4:1 to 5:1. With this setting, the shot blasting can be lifted according to the mixing ratio.

[0031] In use, the foil is placed above the guide mechanism 1 and moved by the traction mechanism. During the movement, the oxides that can be removed by friction are first removed by the polishing brush 2. Then, the foil is coarsely polished by the first shot blasting machine 3 and finely polished by the second shot blasting machine 4. The oxides can be removed by impact. Finally, the residues attached to the surface are polished off by the polishing brush 2 to complete the descaling.

[0032] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for descaling stainless steel foils, comprising a guide mechanism (1) arranged at the end of the hot rolling line, characterized in that: The guide mechanism (1) is provided with polishing brushes (2) on both sides of the feeding end and the discharging end, which are in contact with the foil. The first shot blasting machine (3) near the feeding end throws cast shots and cut shots, and the second shot blasting machine (4) near the discharging end throws cast shots.

2. A device for descaling stainless steel foil according to claim 1, characterized in that: The first and second shot blasting machines (3) and (4) are collectively referred to as shot blasting machines, and the shot blasting speed of the shot blasting machines is 54-63 m / s, and the flow rate is 7-10 kg / m 2 .

3. A device for descaling stainless steel foil according to claim 2, characterized in that: The particle size of the first shot blasting machine (3) is 800-1000 μm, and the particle size of the second shot blasting machine (4) is 500-600 μm.

4. A device for descaling stainless steel foil according to any one of claims 1 to 3, characterized in that: The ratio of cut shots to cast shots is 4:1-5:1, and the diameter of cut shots is smaller than that of cast shots.

5. A device for descaling stainless steel foil according to claim 4, characterized in that: The first shot blasting machine (3) and the second shot blasting machine (4) are each provided with a recovery mechanism (5) below. The recovery mechanism (5) of the first shot blasting machine (3) includes a vibrating inclined screen (6) with a pore size between the particle size of cast shots and the particle size of shot blasting, a partition plate (7) is arranged below the vibrating inclined screen (6) to separate the screen material, and the vibrating inclined screen (6) and the partition plate (7) are located behind the air separation unit of the recovery mechanism (5).

6. A device for descaling stainless steel foil according to claim 5, characterized in that: The first shot blasting machine (3) and the second shot blasting machine (4) are each provided with a lifting mechanism (8) connected to the recovery mechanism (5) and penetrating through. The lifting mechanism (8) of the first shot blasting machine (3) includes two storage bins (9), the two storage bins (9) are respectively in communication with two discharge ports of the recovery mechanism (5), and the lifting mechanism (8) is arranged inside the two storage bins (9).

7. A device for descaling stainless steel foil according to claim 6, characterized in that: The lifting mechanism (8) is a screw elevator, which includes a threaded lead section (801) rotatably connected inside the storage bin (9), a motor (802) fixedly installed at the top end of the storage bin (9) to drive the rotation of the threaded lead section (801), and the rotational speed ratio of the two motors (802) is 4:1-5:1.

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