Filtering device for pickling cold-rolled strip steel

Abstract

The utility model belongs to the technical field of cold-rolled strip steel pickling filtering, and particularly discloses a filtering device for cold-rolled strip steel pickling, which comprises a pickling tank, a filtering mechanism is arranged on one side outside the pickling tank, the filtering mechanism comprises a horizontally arranged filter cartridge sleeve, one end of the filter cartridge sleeve is closed, and the other end of the filter cartridge sleeve is hermetically sleeved with a cartridge cover. Inserting grooves are formed in the two sides of the inner wall of the filter cylinder sleeve, sliding plates are slidably inserted into the inserting grooves, the ends of the sliding plates are fixedly connected with the cylinder cover, an arc-shaped filter screen is installed between the two sliding plates, and a plurality of top drain pipes are installed between the top of the filter cylinder sleeve and the pickling tank at equal intervals in a communicating mode. The bottom of the filter cartridge sleeve is equidistantly communicated and provided with a plurality of bottom sewer pipes, the bottoms of the plurality of bottom sewer pipes are jointly communicated and provided with a sewer main pipe, and the outer sides of the plurality of bottom sewer pipes are jointly provided with a backwashing part. The device can be used for filtering a pickling solution, and meanwhile, the device can realize a backwashing effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of cold-rolled strip steel pickling and filtration, and particularly relates to a filtering device for pickling cold-rolled strip steel. Background Art

[0002] Pickling cold-rolled strip steel is a process that aims to create a clean and active surface for the steel strip to maintain its surface quality. To achieve this surface, the surface oxide scale must be removed. However, after repeated use, the pickling solution in the pickling tank contains large impurities, which can affect the pickling effect upon subsequent use. Therefore, a filtration device is installed in the pickling tank to filter the pickling solution. However, existing filtration devices have a fixed structure, making subsequent cleaning inconvenient. Therefore, a filtration device for pickling cold-rolled strip steel is proposed. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a filtering device for pickling of cold-rolled strip steel.

[0004] To achieve the above objectives, the utility model provides a filtering device for pickling cold-rolled strip steel, comprising a pickling tank, a filtering mechanism being provided on one side of the outside of the pickling tank, the filtering mechanism comprising a horizontally arranged filter cartridge sleeve, one end of the filter cartridge sleeve being closed and the other end being sealed with a cartridge cover, insertion grooves being provided on both sides of the inner wall of the filter cartridge sleeve, slides being slidably inserted inside the insertion grooves, the ends of the slides being fixedly connected to the cartridge covers, and an arc-shaped filter screen being installed between the two slides, a plurality of top water pipes being equidistantly connected and installed between the top of the filter cartridge sleeve and the pickling tank, a plurality of bottom water pipes being equidistantly connected and installed at the bottom of the filter cartridge sleeve, the bottoms of the plurality of bottom water pipes being commonly connected and installed with a sewer main, and a backwashing component being commonly installed on the outsides of the plurality of bottom water pipes.

[0005] In the above technical solution, further, the backwash component includes a horizontally arranged flushing main pipe, a flushing branch pipe is installed between the bottom water pipe and the flushing main pipe, a third control valve is installed on the flushing branch pipe, a fourth control valve is installed on the bottom water pipe below the flushing branch pipe, and a first control valve is installed on the top water pipe. At the same time, the closed end of the filter cartridge sleeve is connected and installed with a waste pipe, the port of the waste pipe corresponds to the arc-shaped port of the arc-shaped filter screen, and a second control valve is installed on the waste pipe.

[0006] In the above technical solution, further, a pushing member is provided on the arc filter screen, and the pushing member includes a motor fixedly mounted on the outside of the cylinder cover, the motor output shaft extends to the inside of the filter cartridge sleeve and a drive shaft is horizontally mounted on the end thereof, a spiral blade is mounted on the outside of the drive shaft, and a gap is left between the spiral blade and the arc filter screen.

[0007] In the above technical solution, further, the discharge port of the sewer main is connected to the suction port of the pump body fixedly installed on the outer wall of the pickling tank, the discharge port of the pump body is connected to the installed water pipe, and the other end of the water pipe is installed with a purification mechanism.

[0008] In the above technical solution, further, the purification mechanism includes a purification box fixedly installed on the top end wall of the pickling tank, a multi-stage purification component is inserted inside the purification box, and a discharge port is provided at one end of the purification box away from the water pipe.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The utility model can filter impurities in the pickling liquid, and the filtering device is split, which is convenient for subsequent disassembly and assembly;

[0011] Furthermore, by providing a backwashing component, the filter device can be backwashed, thereby ensuring the patency of the filter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure proposed by the utility model;

[0013] Figure 2 This is a schematic diagram of the connection between the filter mechanism and the backwash component proposed in the utility model;

[0014] Figure 3 This is a schematic diagram of the filter cartridge structure proposed in the present invention;

[0015] Figure 4 This is a schematic diagram of the purification mechanism structure proposed by the utility model.

[0016] In the figure: 1. Pickling tank; 2. Filter cartridge sleeve; 3. Cartridge cover; 4. Motor; 5. Top water pipe; 6. First control valve; 7. Second control valve; 8. Drain pipe; 9. Flushing main pipe; 10. Drain main pipe; 11. Pump body; 12. Water pipe; 13. Purification box; 14. Multi-stage purification element; 15. Discharge port; 16. Insert slot; 17. Drive shaft; 18. Curved filter screen; 19. Slide plate; 20. Spiral blade; 21. Third control valve; 22. Flushing branch pipe; 23. Bottom water pipe; 24. Fourth control valve. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] like Figures 1-4The filter device shown is used for pickling of cold-rolled strip steel, comprising a pickling tank 1, a filtering mechanism being provided on one side of the outside of the pickling tank 1, the filtering mechanism comprising a horizontally arranged filter cartridge 2, the filter cartridge 2 being closed at one end and being sealed with a cartridge cover 3 at the other end, insertion grooves 16 being provided on both sides of the inner wall of the filter cartridge 2, slides 19 being slidably inserted into the interior of the insertion grooves 16, the ends of the slides 19 being fixedly connected to the cartridge cover 3, and an arc-shaped filter screen 18 being installed between the two slides 19, a plurality of top and bottom water pipes 5 being equidistantly connected between the top of the filter cartridge 2 and the pickling tank 1, and a plurality of top and bottom water pipes 5 being equidistantly connected to the bottom of the filter cartridge 2. There are multiple bottom water pipes 23, the bottoms of the multiple bottom water pipes 23 are connected to the main water pipe 10, and a backwash component is installed on the outside of the multiple bottom water pipes 23. By setting up multiple top water pipes 5, the pickling liquid in the pickling tank 1 can be transported to the inside of the filter cartridge sleeve 2, and the larger impurities in the pickling liquid can be filtered through the arc filter 18. The multiple bottom water pipes 23 and the main water pipe 10 can discharge the preliminarily filtered pickling liquid in an orderly manner. At the same time, the insertion slot 16 and the slide plate 19 are provided to facilitate the disassembly and installation of the arc filter 18.

[0019] The backwashing part includes a horizontally arranged flushing main pipe 9, and a flushing branch pipe 22 is installed between the bottom water pipe 23 and the flushing main pipe 9. A third control valve 21 is installed on the flushing branch pipe 22, and a fourth control valve 24 is installed on the bottom water pipe 23 below the flushing branch pipe 22. A first control valve 6 is installed on the top water pipe 5. At the same time, the closed end of the filter cartridge sleeve 2 is connected and installed with a drainage pipe 8. The port of the drainage pipe 8 corresponds to the arc port of the arc filter screen 18, and the second control valve 7 is installed on the drainage pipe 8. A pushing member is provided on the arc filter screen 18, and the pushing member includes a motor 4 fixedly installed on the outside of the cylinder cover 3. The output shaft of the motor 4 extends to the inside of the filter cartridge sleeve 2 and a drive shaft 17 is horizontally installed on the end. A spiral leaf 20 is installed on the outside of the drive shaft 17, and a gap is left between the spiral leaf 20 and the arc filter screen 18.

[0020] When the curved filter screen 18 needs to be cleaned, the first control valve 6 and the fourth control valve 24 are closed, the second control valve 7 and the third control valve 21 are opened, and the external water source of the flushing main pipe 9 is connected, so that the water is backflushed to the curved filter screen 18 through the flushing branch pipe 22 and the bottom water pipe 23. Under the drive of the motor 4, the drive shaft 17 will drive the spiral blade 20 to push the impurity water to the discharge pipe 8, so as to improve the efficiency of impurity removal. After cleaning, the valves can be restored to their original state.

[0021] The discharge port of the sewer main 10 is connected to the suction port of the pump body 11 fixedly installed on the outer wall of the pickling tank 1, and the discharge port of the pump body 11 is connected to the water supply pipe 12. A purification mechanism is installed at the other end of the water supply pipe 12. The purification mechanism includes a purification box 13 fixedly installed on the top end wall of the pickling tank 1. A multi-stage purification component 14 is inserted inside the purification box 13, and a discharge port 15 is provided at one end of the purification box 13 away from the water supply pipe 12; by providing the pump body 11, the preliminarily filtered pickling liquid can be pumped into the purification box 13, and purified through the multi-stage purification component 14, and finally discharged back into the pickling tank 1 through the discharge port 15 for reuse.

[0022] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering device for pickling cold-rolled strip steel, comprising a pickling tank (1), characterized in that: A filtering mechanism is provided on one side of the outside of the pickling tank (1), and the filtering mechanism comprises a horizontally arranged filter cartridge sleeve (2), one end of the filter cartridge sleeve (2) is closed and the other end is sealed with a sleeve cover (3), both sides of the inner wall of the filter cartridge sleeve (2) are provided with insertion grooves (16), and slide plates (19) are slidably inserted in the insertion grooves (16), the ends of the slide plates (19) are fixedly connected to the sleeve cover (3), and an arc-shaped filter screen (18) is installed between the two slide plates (19), a plurality of top water pipes (5) are installed at equal distances between the top of the filter cartridge sleeve (2) and the pickling tank (1), a plurality of bottom water pipes (23) are installed at equal distances at the bottom of the filter cartridge sleeve (2), the bottoms of the plurality of bottom water pipes (23) are connected to a water main (10) at the same bottom, and a backwashing component is installed on the outside of the plurality of bottom water pipes (23).

2. A filtering device for pickling cold-rolled strip steel according to claim 1, characterized in that: The backwashing component comprises a horizontally arranged flushing main pipe (9), a flushing branch pipe (22) is connected and installed between the bottom water pipe (23) and the flushing main pipe (9), a third control valve (21) is installed on the flushing branch pipe (22), a fourth control valve (24) is installed on the bottom water pipe (23) below the flushing branch pipe (22), a first control valve (6) is installed on the top water pipe (5), and a drainage pipe (8) is connected and installed at the closed end of the filter cartridge sleeve (2), a port of the drainage pipe (8) corresponds to the arc port of the arc filter screen (18), and a second control valve (7) is installed on the drainage pipe (8).

3. A filtering device for pickling cold-rolled strip steel according to claim 2, characterized in that: A pushing member is provided on the arc filter (18), and the pushing member comprises a motor (4) fixedly mounted on the outside of the cartridge cover (3); an output shaft of the motor (4) extends into the interior of the cartridge sleeve (2) and a drive shaft (17) is horizontally mounted on the end thereof; a spiral blade (20) is mounted on the outside of the drive shaft (17), and a gap is left between the spiral blade (20) and the arc filter (18).

4. The filtering device for pickling cold-rolled strip steel according to claim 1, characterized in that: The discharge port of the sewer main (10) is connected to the suction port of a pump body (11) fixedly installed on the outer wall of the pickling tank (1), and the discharge port of the pump body (11) is connected to the installed water pipe (12), and the other end of the water pipe (12) is installed with a purification mechanism.

5. A filtering device for pickling cold-rolled strip steel according to claim 4, characterized in that: The purification mechanism comprises a purification box (13) fixedly mounted on the top end wall of the pickling tank (1), a multi-stage purification component (14) being inserted into the purification box (13), and a discharge port (15) is provided at one end of the purification box (13) away from the water pipe (12).

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