Water purging device for surface of hot continuous rolling plate strip

Abstract

The utility model relates to a hot continuous rolling plate strip surface water purging device, and belongs to the technical field of hot rolling strip steel surface control processes in the metallurgical industry. According to the technical scheme, a fixed spraying pipe (13) and two movable spraying pipes (10) are connected to a water supply collecting pipe (20), and the movable spraying pipes (10) are symmetrically located on the two sides of the fixed spraying pipe (13); the fixed spray pipe (13) is fixed on the middle support (11), the movable spray pipe (10) is rotatably connected to the side support (12), the middle nozzle (7) is in threaded connection to the fixed spray pipe (13), the side nozzles (6) are in threaded connection to the movable spray pipe (10), and three groups of fan-shaped surfaces sprayed by the middle nozzle (13) and the two side nozzles (10) form a blowing fan-shaped surface matched with a hot rolling strip steel plate surface. The device has the beneficial effects that the angle of the nozzle is convenient to adjust, and impurities such as scale on the surface of strip steel can be swept cleanly.

Description

Technical Field

[0001] The utility model relates to a water blowing device for the surface of a hot-rolled strip, and belongs to the technical field of surface control technology of hot-rolled strip steel in the metallurgical industry. Background Art

[0002] The hot rolling finishing mill is a key quality equipment in the strip production line and the core of hot-rolled strip production. To ensure the surface quality of the finished strip, a strip surface purge water device is installed in front of each finishing mill in the finishing mill. High-pressure water is used to spray a fan-shaped water stream to purge impurities such as accumulated cooling water on the strip surface between each stand, reducing abnormal temperature drops in the strip while ensuring that the strip surface is clean and controllable, ensuring that the rolled strip is free of product defects such as pitting and indentations. However, in the existing technology, it is very difficult to adjust the nozzle angle in the strip surface purge water device, resulting in incomplete purge of impurities such as iron oxide scale on the strip surface. The main reason is that the nozzle is located in the rolling mill room, where the space is limited and it is prone to collision damage. In addition, using a wrench to adjust the nozzle angle is inefficient and has low controllable accuracy. Utility Model Content

[0003] The purpose of the utility model is to provide a surface purging water device for hot-rolled strips, which is convenient for adjusting the nozzle angle and can clean the iron oxide scale and other debris on the surface of the strip, thereby solving the problems existing in the background technology.

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

[0005] A surface purge water device for hot-rolled strip comprises an edge nozzle, an intermediate nozzle, a movable nozzle, an intermediate bracket, an edge bracket, a fixed nozzle and a water supply manifold, wherein a fixed nozzle and two movable nozzles are connected to the water supply manifold, and the movable nozzles are symmetrically arranged on both sides of the fixed nozzle; the fixed nozzle is fixed on the intermediate bracket, the movable nozzle is rotatably connected to the edge bracket, the intermediate nozzle is threadedly connected to the fixed nozzle, and the edge nozzle is threadedly connected to the movable nozzle, and the three groups of fan-shaped surfaces sprayed by the intermediate nozzle and the two edge nozzles form a purge fan surface that matches the surface of the hot-rolled strip.

[0006] The movable nozzle is rotatably connected to the side bracket via a rotating shaft.

[0007] A gear A is fixed on the rotating shaft, and a gear B meshing with the gear A is provided on the side bracket.

[0008] The gear B is fixed on a slider, the slider is slidably connected to a slide bar, and a spring is provided on the slide bar.

[0009] The side bracket is provided with a sliding groove matched with the slider and the sliding rod, one end of the spring is connected to the slider, and the other end of the spring is connected to the sliding groove.

[0010] The movable nozzle is connected to the water supply header through a bellows.

[0011] The middle bracket and the side bracket are respectively fixed on the water supply header.

[0012] The beneficial effect of this utility model is that during the hot-rolled strip production process, three sets of fan-shaped sprays from the central nozzle and two side nozzles form a purge fan that matches the surface of the hot-rolled strip, thoroughly sweeping away impurities such as scale from the strip surface. Furthermore, the two side nozzles are easy to adjust, reducing worker labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 This is a schematic diagram of the side bracket connection structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the connection structure between the movable nozzle and the side bracket of the utility model;

[0016] Figure 4 This is a schematic diagram of the intermediate bracket connection structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the use state of the utility model;

[0018] In the figure: 1. Fixed beam; 2. Water supply hose; 3. Quick connector; 4. Fixed base; 5. Rotating shaft; 6. Side nozzle; 7. Middle nozzle; 8. Locking nut; 9. Gear A; 10. Movable nozzle; 11. Middle bracket; 12. Side bracket; 13. Fixed nozzle; 14. Slide; 15. Gear B; 16. Spring; 17. Slide rod; 18. Slider; 19. Bellows; 20. Water supply manifold; 21. Protective cover; 22. Strip steel. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and examples.

[0020] Refer to the attached Figure 1-5A surface purge water device for hot-rolled strip comprises an edge nozzle 6, an intermediate nozzle 7, a movable nozzle 10, an intermediate bracket 11, an edge bracket 12, a fixed nozzle 13 and a water supply manifold 20. A fixed nozzle 13 and two movable nozzles 10 are connected to the water supply manifold 20. The movable nozzles 10 are symmetrically arranged on both sides of the fixed nozzle 13; the fixed nozzle 13 is fixed on the intermediate bracket 11, the movable nozzle 10 is rotatably connected to the edge bracket 12, the intermediate nozzle 7 is threadedly connected to the fixed nozzle 13, and the edge nozzle 6 is threadedly connected to the movable nozzle 10. The three groups of fan-shaped surfaces sprayed by the intermediate nozzle 7 and the two edge nozzles 6 form a purge fan surface that matches the surface of the hot-rolled strip.

[0021] In this embodiment, refer to the attached Figure 1-5 The hot-rolled strip surface purge water device includes a fixed crossbeam 1, a water supply hose 2, a quick connector 3, a fixed base 4, a rotating shaft 5, a side nozzle 6, a middle nozzle 7, a locking nut 8, a gear A9, a movable nozzle 10, an middle bracket 11, a side bracket 12, a fixed nozzle 13, a slide 14, a gear B15, a spring 16, a slide bar 17, a slider 18, a bellows 19, a water supply manifold 20 and a protective cover 21, wherein:

[0022] The water supply manifold 20 is fixed to the fixed beam 1 through the fixed base 4. A quick connector 3 is provided at one end of the water supply manifold 20. The quick connector 3 is connected to the water supply hose 2. The intermediate bracket 11 is fixed in the middle of the water supply manifold 20. The fixed nozzle 13 is fixed on the intermediate bracket 11. The upper end of the fixed nozzle 13 is connected to the water supply manifold 20, and the lower end is threadedly connected to the intermediate nozzle 7 and locked with a locking nut 8. Figure 1 、 4 shown.

[0023] The movable nozzle 10 and the side bracket 12 are two identical groups. The side brackets 12 are located on both sides of the middle bracket 11 and are respectively fixed on the water supply manifold 20. The movable nozzle 10 is rotatably connected to the side bracket 12 through the rotating shaft 5. The upper end of the movable nozzle 10 is connected to the water supply manifold 20 through the bellows 19. The bellows 19 can enable the side nozzle to extend together when the angle is adjusted to ensure that the angle adjustment is not restricted. The bellows 19 adopts a tetrafluoroethylene bellows, which has the properties of water pressure resistance, corrosion resistance, high temperature resistance and aging resistance; the lower end of the movable nozzle 10 is threadedly connected to the side nozzle 6 and locked by the locking nut 8. The rotating shaft 5 is fixedly connected to the gear A9, the side bracket 12 is provided with a slide groove 14, the interior of the slide groove 14 is fixedly connected to the slide rod 17, the slide rod 17 is slidably connected to the slider 18, the slider 18 is fixedly connected to the gear B15 that meshes with the gear A9, the slide rod 17 is sleeved with a spring 16, one end of the spring 16 is fixedly connected to the inner end of the slide groove 14, and the other end of the spring 16 is fixedly connected to the slider 18, as shown in the attached figure. Figure 1 、2 , as shown in 3.

[0024] When the staff needs to adjust the angle of the side nozzle 6, they pull up the gear B15. At this time, the gear B15 disengages from the gear A9, and the two are no longer engaged. The staff can adjust the angle by rotating the side nozzle 6. After adjusting to the appropriate position, the gear B15 is released. Under the action of the spring 16 and the slide bar 17, the gear B15 can be reset and locked with the gear A9 again, thereby ensuring the rapid adjustment of the nozzle angle. In this way, the three groups of water spray fans sprayed by the three nozzles form an overall purge fan, which is used to purge the iron oxide scale and other debris on the upper surface of the strip during the rolling process, completely avoiding the situation in the past where multiple precise adjustments were required to adjust the purge water, reducing the labor intensity of workers and improving the working environment.

Claims

1. A device for blowing water on the surface of a hot-rolled strip, characterized in that: The invention comprises an edge nozzle (6), an intermediate nozzle (7), a movable nozzle (10), an intermediate bracket (11), an edge bracket (12), a fixed nozzle (13) and a water supply manifold (20), wherein a fixed nozzle (13) and two movable nozzles (10) are connected to the water supply manifold (20), and the movable nozzles (10) are symmetrically arranged on both sides of the fixed nozzle (13); the fixed nozzle (13) is fixed on the intermediate bracket (11), the movable nozzle (10) is rotatably connected to the edge bracket (12), the intermediate nozzle (7) is threadedly connected to the fixed nozzle (13), and the edge nozzle (6) is threadedly connected to the movable nozzle (10), and three groups of fan-shaped surfaces sprayed by the intermediate nozzle (7) and the two edge nozzles (6) form a purge fan surface that matches the surface of the hot-rolled strip steel plate.

2. The device for blowing water on the surface of a hot-rolled strip according to claim 1, characterized in that: The movable nozzle (10) is rotatably connected to the edge bracket (12) via a rotating shaft (5).

3. The device for blowing water on the surface of a hot-rolled strip according to claim 2, characterized in that: A gear A (9) is fixed on the rotating shaft (5), and a gear B (15) meshing with the gear A (9) is provided on the side bracket (12).

4. The device for blowing water on the surface of a hot-rolled strip according to claim 3, characterized in that: The gear B (15) is fixed on a slider (18), the slider (18) is slidably connected to a slide bar (17), and a spring (16) is provided on the slide bar (17).

5. The device for blowing water on the surface of a hot-rolled strip according to claim 4, characterized in that: The side bracket (12) is provided with a slide groove (14) that matches the slider (18) and the slide rod (17). One end of the spring (16) is connected to the slider (18), and the other end of the spring (16) is connected to the slide groove (14).

6. A device for blowing water on the surface of a hot-rolled strip according to claim 1 or 2, characterized in that: The movable nozzle (10) is connected to the water supply header (20) via a bellows (19).

7. The device for blowing water on the surface of a hot-rolled strip according to claim 1, characterized in that: The middle bracket (11) and the side bracket (12) are respectively fixed on the water supply header (20).

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