Hot-rolled strip steel laminar cooling water filtering device

Abstract

The utility model relates to a hot-rolled strip steel laminar cooling water filtering device, and belongs to the technical field of hot-rolled strip steel production in the metallurgical industry. According to the technical scheme, an inlet (2) and an outlet (3) are formed in the left side and the right side of a filter shell (1) respectively, the inlet (2) and the outlet (3) are communicated with a pipeline (25) respectively, a mounting flange (7) is arranged at the top of the filter shell (1), a frame-type filter screen (4) is mounted on the lower surface of the mounting flange (7) and extends to the position between the inlet and the outlet in the filter shell (1), and the pipeline (25) is communicated with the filter shell (1). An inclined filter screen slideway (5) is welded in the filter shell, a filter screen (4) is lapped on the filter screen slideway, the filter screen slideway and the filter screen divide the space in the filter shell into a front part and a rear part, and the inlet and the outlet are respectively communicated with the front part and the rear part. The filter is additionally arranged on the laminar flow water pipeline, so that the laminar cooling process is ensured to be normally carried out, the problem of blockage of the laminar cooling nozzle is solved, and the quality of strip steel products is ensured to be controlled.

Description

Technical Field

[0001] The utility model relates to a laminar cooling water filtering device for hot-rolled strip steel, belonging to the technical field of hot-rolled strip steel production in the metallurgical industry. Background Art

[0002] The laminar cooling link after rolling is a key factor affecting the shape of hot-rolled strip steel. In the laminar cooling water process of hot-rolled strip steel, the laminar cooling pump station pressurizes the cooling water to the packing tower for filtration, and then supplies it to the high-level water tank, and supplies the laminar upper and lower headers to cool the strip steel on the production line, so as to achieve the purpose of controlling the mechanical properties of the strip steel. However, when the water flows through the packing tower, some fillers will fall and enter the laminar header with the water flow, causing the header nozzle to be blocked, the water flow to become smaller, affecting the cooling effect, and then affecting the mechanical properties of the strip steel product. Utility Model Content

[0003] The utility model aims to provide a laminar cooling water filtering device for hot-rolled strip steel, which ensures the normal laminar cooling process by installing a filter in the laminar water pipeline and solves the problems existing in the background technology.

[0004] The technical solution of the utility model is:

[0005] A laminar cooling water filtration device for hot-rolled strip steel comprises a laminar cooling pump station, a packing tower, a high-level water tank, a filter and a laminar flow header, wherein the laminar cooling pump station, the packing tower, the high-level water tank and the laminar flow header are connected in sequence through pipelines, and a filter is arranged on the pipeline between the packing tower and the high-level water tank; the filter comprises a filter housing, a filter screen, a filter screen slide, a mounting flange and a manhole flange, an inlet and an outlet are respectively arranged on the left and right sides of the filter housing, and the inlet and the outlet are respectively connected to the pipeline, a mounting flange is arranged on the top of the filter housing, a frame-type filter screen is installed on the lower surface of the mounting flange, and the filter screen extends between the inlet and the outlet in the filter housing, an inclined filter screen slide is welded in the filter housing, the filter screen is placed on the filter screen slide, the filter screen slide and the filter screen divide the space in the filter housing into front and rear parts, and the inlet and the outlet are respectively connected to the front and rear parts; a manhole flange is arranged at the bottom of the filter housing for easy cleaning.

[0006] Furthermore, the top of the filter slide is directly welded to the inner wall of the filter housing, and the bottom of the filter slide is bent and welded to the inner wall of the filter housing.

[0007] Furthermore, the length of the filter slide is smaller than the length of the filter, the filter slides are two parallel filter slides, and the distance between the two filter slides is smaller than the width of the filter.

[0008] Furthermore, a connecting rod is arranged on the lower surface of the mounting flange, and the lower end of the connecting rod is connected to the top of the filter screen through a hinge shaft.

[0009] Furthermore, the filter screen slideway and the filter screen are installed in the filter housing at an angle of 60° to the horizontal direction.

[0010] Furthermore, the filter screen is provided with cross-shaped reinforcement ribs, and the ends of the cross-shaped reinforcement ribs are fixedly connected to the outer frame of the filter screen.

[0011] Furthermore, the inlet and outlet of the filter housing are respectively welded and installed with the pipeline, and the filter screen is overlapped on the filter screen slideway on the inner wall of the filter housing at an angle of 60 degrees to the horizontal direction.

[0012] The utility model has the beneficial effects of: by adding a filter to the laminar water pipeline, the laminar cooling process is ensured to be carried out normally, the problem of laminar cooling nozzle blockage is solved, and the quality of the strip steel product is ensured to be controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0014] Figure 2 This is a schematic diagram of the filter structure of an embodiment of the utility model;

[0015] Figure 3 This is a side view of the filter of the utility model embodiment;

[0016] Figure 4 This is a schematic diagram of a filter screen according to an embodiment of the utility model;

[0017] In the figure: laminar cooling pump station 21, packing tower 22, high-level water tank 23, filter 24, pipeline 25, laminar flow header 26, filter housing 1, inlet 2, outlet 3, filter screen 4, filter screen slide 5, manhole flange 6, mounting flange 7, hinge shaft 8, connecting rod 9, reinforcing rib 10, outer frame 11. DETAILED DESCRIPTION

[0018] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0019] Refer to the attached Figure 1-4The present embodiment provides a laminar cooling water filtration device for hot-rolled strip steel, comprising a laminar cooling pump station 21, a packing tower 22, a high-level water tank 23, a filter 24 and a laminar header 26. The laminar cooling pump station 21, the packing tower 22, the high-level water tank 23 and the laminar header 26 are sequentially connected through a pipeline 25. A filter 24 is arranged on the pipeline 25 between the packing tower 22 and the high-level water tank 23. The filter 24 comprises a filter housing 1, a filter screen 4, a filter screen slide 5, a mounting flange 7 and a manhole flange 6. The left and right sides of the filter housing 1 are respectively provided with an inlet 2 and outlet 3, the inlet 2 and outlet 3 are connected with the pipeline 25 respectively, a mounting flange 7 is provided on the top of the filter housing 1, a frame-type filter screen 4 is installed on the lower surface of the mounting flange 7, the filter screen 4 extends between the inlet 2 and the outlet 3 in the filter housing 1, an inclined filter screen slide 5 is welded in the filter housing 1, the filter screen 4 is placed on the filter screen slide 5, the filter screen slide 5 and the filter screen 4 divide the space in the filter housing 1 into two parts, front and back, and the inlet 2 and outlet 3 are connected with the front and back parts respectively; a manhole flange 6 is provided at the bottom of the filter housing 1 for easy cleaning.

[0020] The top of the filter slide is directly welded to the inner wall of the filter housing 1 , and the bottom of the filter slide is bent and welded to the inner wall of the filter housing 1 .

[0021] The length of the filter slide 5 is smaller than the length of the filter 4 . The filter slides 5 are two parallel to each other, and the distance between the two filter slides 5 is smaller than the width of the filter 4 .

[0022] A connecting rod 9 is provided on the lower surface of the mounting flange 7 , and the lower end of the connecting rod 9 is connected to the top of the filter screen 4 through a hinge shaft 8 .

[0023] The filter screen slideway 5 and the filter screen 4 are installed in the filter housing 1 at an angle of 60° to the horizontal direction.

[0024] The filter screen 4 is provided with cross-shaped reinforcing ribs 10 , and the ends of the cross-shaped reinforcing ribs 10 are fixedly connected to the outer frame 11 of the filter screen 4 .

[0025] The inlet 2 and the outlet 3 of the filter housing are respectively welded 25 to the pipeline, and the filter screen 4 is overlapped on the filter screen slideway 5 on the inner wall of the filter housing 1 at an angle of 60 degrees to the horizontal direction.

[0026] In the embodiment, the top outer frame of the filter screen 4 is hinged to the mounting flange 7 through the hinge shaft 8, and the filter screen 4 is placed on the filter screen slide 5 welded inside the filter housing 1, and the filter screen slide 5 and the filter screen 4 are installed at 60° to the horizontal direction in the filter housing 1. The mounting flange 7 is fixed to the filter housing 1 by bolts, and the filter screen 4 is positioned between the filter housing 1 and the filter screen slide 5 to ensure that the flushing of the filter screen 4 by water flow will not cause positional displacement.

[0027] The inlet 2 and outlet 3 of the filter housing 1 are respectively welded and installed with the pipeline welding 25. The filter screen 4 is a stainless steel filter screen with a pore diameter of 5mm and a wire diameter of 2mm; the manhole flange 6 is connected to the filter housing 1 by bolts, and a sealing rubber strip is installed. The filter screen 4 can be taken out with the installation flange 7 for cleaning or replacement, and the manhole flange 6 is convenient for cleaning and filtering fallen debris.

Claims

1. A laminar cooling water filtration device for hot-rolled strip steel, characterized in that: The invention comprises a laminar cooling pump station (21), a packing tower (22), a high-level water tank (23), a filter (24) and a laminar flow header (26). The laminar cooling pump station (21), the packing tower (22), the high-level water tank (23) and the laminar flow header (26) are connected in sequence through a pipeline (25). A filter (24) is provided on the pipeline (25) between the packing tower (22) and the high-level water tank (23). The filter (24) comprises a filter housing (1), a filter screen (4), a filter screen slideway (5), a mounting flange (7) and a manhole flange (6). The left and right sides of the filter housing (1) are respectively provided with an inlet (2) and an outlet (3). The inlet ( The filter housing (1) has an inlet (2) and an outlet (3) connected to the pipeline (25) respectively. A mounting flange (7) is provided on the top of the filter housing (1). A frame-type filter screen (4) is installed on the lower surface of the mounting flange (7). The filter screen (4) extends between the inlet (2) and the outlet (3) in the filter housing (1). An inclined filter screen slideway (5) is welded in the filter housing (1). The filter screen (4) is placed on the filter screen slideway (5). The filter screen slideway (5) and the filter screen (4) divide the space in the filter housing (1) into two parts, front and rear. The inlet (2) and the outlet (3) are connected to the front and rear parts respectively. A manhole flange (6) is provided at the bottom of the filter housing (1).

2. A hot-rolled strip laminar cooling water filtration device according to claim 1, characterized in that: The top of the filter slideway (5) is directly welded to the inner wall of the filter housing (1), and the bottom of the filter slideway (5) is bent and welded to the inner wall of the filter housing (1).

3. A hot-rolled strip laminar cooling water filtration device according to claim 1 or 2, characterized in that: A connecting rod (9) is provided on the lower surface of the mounting flange (7), and the lower end of the connecting rod (9) is connected to the top of the filter screen (4) via a hinge shaft (8).

4. A hot-rolled strip laminar cooling water filtration device according to claim 1 or 2, characterized in that: The filter screen slideway (5) and the filter screen (4) are installed in the filter housing (1) at an angle of 60° to the horizontal direction.

5. A hot-rolled strip laminar cooling water filtration device according to claim 1 or 2, characterized in that: The filter screen (4) is provided with a cross-shaped reinforcing rib (10), and the end of the cross-shaped reinforcing rib (10) is fixedly connected to the outer frame (11) of the filter screen (4).

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