Finish rolling spraying device

Abstract

The utility model relates to the technical field of finish rolling spraying, in particular to a finish rolling spraying device which comprises a spraying mechanism, liquid guide pipes distributed in equal columns are arranged at the lower end of the surface of the spraying mechanism, and liquid outlet pipes are arranged at the lower ends of the surfaces of the liquid guide pipes; the backflow prevention mechanism is used for preventing the cooling liquid in the liquid guide pipe from flowing back and is arranged in the liquid guide pipe; the backflow prevention mechanism comprises a liquid guide hole formed in the inner wall of the liquid guide pipe. According to the device, due to the fact that a cloth pipe has flexibility, cooling liquid flows in the cloth pipe, the cloth pipe swings back and forth in the spraying process, the spraying range is widened, the interior of a liquid guide hole is blocked through a spring, a supporting block and a blocking block, and compared with the situation that when local pressure occurs in an existing inner shell, water in the inner shell flows back, the spraying effect is improved. The elastic force of the spring pushes the blocking block to move upwards to block the inner wall of the liquid guide hole, and then the backflow phenomenon of cooling liquid at the lower end of the inner wall of the liquid guide pipe is prevented.

Description

Technical Field

[0001] This utility model relates to the field of precision rolling spraying technology, and in particular to precision rolling spraying device. Background Technology

[0002] Ultra-thin precision steel strips are widely used in aerospace, electronic devices, and personal care products such as razor blades for various precision parts. To improve the hardness and strength of ultra-thin precision steel strips while maintaining the surface finish of the material, a spraying device is required to continuously spray coolant onto the rolls and steel strip during high-precision finishing mill rolling.

[0003] According to the search, the Chinese patent "A Segmented Cooling Device After Hot Continuous Rolling and Finishing" (authorization announcement number "CN220160935U") uses a micro motor, gears, and an arc-shaped rack to enable the connecting plate to drive the inner shell to rotate, thereby misaligning the through hole at the bottom of the inner shell with the water spray nozzle at the bottom of the outer shell. This allows for adjustment of the spray nozzle's flow rate, making it convenient to adapt to steel strips of different thicknesses, specifications, and temperatures, and enabling the steel strip to be cooled more precisely to the appropriate temperature.

[0004] In the aforementioned application, adjusting the misalignment between the bottom through-hole of the inner shell and the bottom spray nozzle of the outer shell caused local pressure changes inside the inner shell, which could easily lead to water backflow inside the inner shell, thereby affecting the cooling effect on the steel strip.

[0005] Therefore, a finishing mill spraying device is proposed to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a precision rolling spraying device to solve the above-mentioned problems, thereby improving the problem that water in the inner shell is prone to backflow.

[0007] This utility model achieves the above-mentioned objectives through the following technical solution: a precision rolling spraying device, comprising: a spraying mechanism, wherein the lower surface of the spraying mechanism is provided with equally arranged liquid guiding pipes, and the lower surface of the liquid guiding pipes is provided with liquid outlet pipes; and an anti-backflow mechanism, wherein the anti-backflow mechanism for preventing the coolant in the liquid guiding pipes from flowing back is disposed inside the liquid guiding pipes; wherein the anti-backflow mechanism includes a liquid guiding hole opened in the inner wall of the liquid guiding pipe, the bottom end of the liquid outlet pipe is connected to a ring-shaped distribution of cloth pipes, the inner wall of the liquid guiding hole is recessed into a funnel shape, a support block is fixedly connected to the lower end of the inner wall of the liquid guiding hole, a blocking block is slidably connected to the inner wall of the support block, and a spring is fixedly connected to the opposite end of the blocking block and the support block. Through the spring, the support block, and the blocking block, the liquid guiding hole is sealed, preventing the coolant in the lower end of the inner wall of the liquid guiding pipe from flowing back. Because the cloth pipes are flexible, the coolant flows inside the cloth pipes, causing the cloth pipes to swing back and forth during spraying, thereby increasing the spraying range.

[0008] Preferably, a sealed bearing is fixedly connected to the lower end of the surface of the liquid guide tube, and the outer edge of the sealed bearing is fixedly connected to the inner wall of the liquid outlet tube. The sealed bearing achieves a seal at the connection between the liquid outlet tube and the liquid guide tube, preventing coolant from seeping from the lower end of the inner wall of the liquid outlet tube to the upper end, thus ensuring that the liquid outlet tube does not drive the liquid guide tube to rotate during rotation.

[0009] Preferably, a waterproof cloth is fixedly connected to the opposite ends of the blocking block and the support block, and the surface of the spring is located inside the waterproof cloth.

[0010] Preferably, a sealing ring is fixedly connected to the inner wall of the support block, and the lower end of the surface of the plug block is slidably connected to the inner wall of the sealing ring. The waterproof cloth and the sealing ring together protect the surface of the spring, preventing the spring from being immersed in coolant.

[0011] Preferably, a stop block is fixedly connected to the bottom end of the plug, and the diameter of the stop block is larger than the diameter of the sealing ring. The plug block limits the upward movement of the plug, preventing it from detaching from the inner wall of the support block.

[0012] Preferably, the surface of the liquid guide tube is fixedly connected with two fixing rods.

[0013] Preferably, a stop bar is fixedly connected to the top end of the liquid guide tube.

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

[0015] 1. Due to the flexibility of the tube, the coolant flows inside the tube, causing the tube to swing back and forth during spraying, thus increasing the spray range. Through springs, supports, and plugs, the coolant orifices are sealed. Compared to existing systems where water backflow occurs when local pressure appears inside the inner shell, this method uses the elastic force of the springs to push the plugs upwards to seal the inner wall of the coolant orifices, thereby preventing the coolant from backflowing from the lower end of the inner wall of the coolant tube.

[0016] 2. By using a sealed bearing, the connection between the outlet pipe and the guide pipe is sealed, preventing coolant from seeping from the lower end of the outlet pipe's inner wall to the upper end, thus ensuring that the outlet pipe will not drive the guide pipe to rotate during rotation. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the liquid guide tube and liquid outlet tube structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the anti-backflow mechanism of this utility model;

[0020] Figure 4 for Figure 3 A magnified view of A in the middle.

[0021] In the diagram: 1. Spraying mechanism; 2. Liquid guide pipe; 3. Liquid outlet pipe; 4. Anti-backflow mechanism; 41. Distribution pipe; 42. Liquid guide hole; 43. Support block; 44. Block; 45. Spring; 46. Waterproof cloth; 47. Sealing ring; 48. Stop block; 49. Sealed bearing; 410. Fixing rod; 411. Stop bar. Detailed Implementation

[0022] 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.

[0023] In practical implementation: such as Figure 1-4 As shown, the finishing mill spraying device includes: a spraying mechanism 1, with equally spaced liquid guide pipes 2 at the lower end of the surface of the spraying mechanism 1, and a liquid outlet pipe 3 at the lower end of the surface of the liquid guide pipes 2; and an anti-backflow mechanism 4, which is located inside the liquid outlet pipe 3 to prevent the coolant from flowing back into the liquid guide pipes 2. The anti-backflow mechanism 4 includes a liquid guide hole 42 formed in the inner wall of the liquid guide pipes 2, and a ring-shaped distribution pipe 41 connected to the bottom end of the liquid outlet pipe 3. The inner wall of the liquid guide hole 42 is recessed in a funnel shape, and a support block 43 is fixedly connected to the lower end of the inner wall of the liquid guide hole 42. A blocking block 44 is slidably connected to the inner wall of the support block 43, and a spring 45 is fixedly connected to the opposite end of the blocking block 44 and the support block 43. The distribution pipe 41 is a polyethylene component.

[0024] The spraying mechanism 1 includes a spray pipe connected to a liquid guide pipe 2. A corrugated pipe is connected to the upper surface of the spray pipe. A finishing mill is installed on the surface of the spray pipe, and a spray pipe is also installed on the inner wall of the finishing mill. The spray pipe on the inner wall of the finishing mill cools the surface of the rolls. A cooling box is installed on one side of the precision mill. A liquid pump is connected to the top of the cooling box. The top of the liquid pump is connected to the bottom of the corrugated pipe. An electric push rod is fixedly connected to the top of the precision mill. A driven block is fixedly connected to the telescopic end of the electric push rod. The front end of the driven block is fixedly connected to the surface of the spray pipe. An arc-shaped rack is fixedly connected to the surface of the liquid outlet pipe 3. A servo motor is fixedly connected to the surface of the liquid guide pipe 2. A fixed block is fixedly connected to the surface of the liquid guide pipe 2. A gear is rotatably connected to the inner wall of the fixed block. The output shaft of the servo motor is fixedly connected to the top of the gear. The gear meshes with the arc-shaped rack. Four liquid outlet holes are opened at the bottom of the liquid guide pipe 2.

[0025] When the steel strip needs to be cooled, the liquid pump is manually turned on. The liquid pump draws coolant from the cooling tank and delivers it to the liquid guide pipe 2 through the corrugated pipe and the spray pipe. The flow of coolant in the liquid guide pipe 2 pushes the block 44 down to the liquid guide hole 42 in the recessed funnel-shaped position on the inner wall, so that the liquid guide hole 42 is open. The coolant flows through the liquid guide hole 42 to the liquid outlet hole, and the coolant in the liquid outlet hole flows to the distribution pipe 41. The coolant flows in the distribution pipe 41, causing the distribution pipe 41 to swing back and forth, so that the swinging distribution pipe 41 sprays coolant evenly onto the steel strip.

[0026] When the coolant at the lower end of the inner wall of the liquid guide pipe 2 is not discharged in time, the coolant at the lower end of the inner wall of the liquid guide pipe 2 will backflow. The coolant flows into the liquid guide hole 42 and pushes the block 44 upward. At this time, the elastic force of the spring 45 pushes the block 44 upward to the middle of the liquid guide hole 42, so that the block 44 seals the liquid guide hole 42, preventing the coolant at the lower end of the inner wall of the liquid guide pipe 2 from flowing back into the spray pipe through the liquid guide hole 42. When cooling of the steel strip and rolls is not required, the liquid pump is manually turned off.

[0027] like Figure 3 As shown, a sealing bearing 49 is fixedly connected to the lower end of the surface of the liquid guide tube 2, and the outer edge of the sealing bearing 49 is fixedly connected to the inner wall of the liquid outlet tube 3.

[0028] like Figure 4 As shown, a waterproof cloth 46 is fixedly connected to the opposite ends of the blocking block 44 and the support block 43. The surface of the spring 45 is located inside the waterproof cloth 46. A sealing ring 47 is fixedly connected to the inner wall of the support block 43. The lower end of the surface of the blocking block 44 is slidably connected to the inner wall of the sealing ring 47. A stop block 48 is fixedly connected to the bottom end of the blocking block 44. The diameter of the stop block 48 is larger than the diameter of the sealing ring 47.

[0029] like Figure 3 As shown, two fixing rods 410 are fixedly connected to the surface of the liquid guide tube 2, and a stop rod 411 is fixedly connected to the top of the liquid outlet tube 3.

[0030] When it is necessary to control the flow rate of coolant sprayed by the pipe 41, the servo motor is manually turned on. The output shaft of the servo motor rotates, which drives the gear to rotate. The rotation of the gear drives the arc rack to move in a circular motion. The circular motion of the arc rack drives the outlet pipe 3 and the stop rod 411 to move in a circular motion on the guide pipe 2 to a suitable position. The servo motor is then manually turned off. The two fixed rods 410 limit the circular motion of the stop rod 411, preventing the arc rack from detaching from the gear surface during the circular motion.

[0031] When this utility model is in use, the coolant at the lower end of the inner wall of the liquid guide tube 2 will backflow. The coolant flows into the liquid guide hole 42 and pushes the block 44 upward. At this time, the elastic force of the spring 45 pushes the block 44 upward to the middle of the liquid guide hole 42, so that the block 44 seals the liquid guide hole 42 and prevents the coolant at the lower end of the inner wall of the liquid guide tube 2 from flowing back into the spray pipe through the liquid guide hole 42.

[0032] It should be noted that the liquid pump, servo motor, sealed bearing 49, spring 45 and other components mentioned above are all relatively mature devices with existing technologies. The specific models can be selected according to actual needs. At the same time, the liquid pump and servo motor can be powered by the built-in power supply or by the mains power. The specific power supply method can be selected according to the situation, which will not be elaborated here.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A finishing mill spraying device, characterized in that, include: A spraying mechanism (1) is provided with equally arranged liquid guide pipes (2) at the lower end of the surface of the spraying mechanism (1), and a liquid outlet pipe (3) is provided at the lower end of the surface of the liquid guide pipes (2). Anti-backflow mechanism (4), used to prevent coolant backflow in the liquid guide pipe (2), is provided inside the liquid guide pipe (2); The backflow prevention mechanism (4) includes a liquid guide hole (42) opened on the inner wall of the liquid guide pipe (2), the bottom end of the liquid outlet pipe (3) is connected to a ring-shaped distribution pipe (41), the inner wall of the liquid guide hole (42) is recessed in a funnel shape, a support block (43) is fixedly connected to the lower end of the inner wall of the liquid guide hole (42), a block block (44) is slidably connected to the inner wall of the support block (43), and a spring (45) is fixedly connected to the opposite end of the block block (44) and the support block (43).

2. The finishing mill spraying device according to claim 1, characterized in that: A sealing bearing (49) is fixedly connected to the lower end of the surface of the liquid guide tube (2), and the outer edge of the sealing bearing (49) is fixedly connected to the inner wall of the liquid outlet tube (3).

3. The finishing mill spraying device according to claim 1, characterized in that: The blocking block (44) and the support block (43) are fixedly connected to a waterproof cloth (46) at their opposite ends, and the surface of the spring (45) is located inside the waterproof cloth (46).

4. The finishing mill spraying device according to claim 1, characterized in that: The inner wall of the support block (43) is fixedly connected to a sealing ring (47), and the lower end of the surface of the block (44) is slidably connected to the inner wall of the sealing ring (47).

5. The finishing mill spraying device according to claim 1, characterized in that: The bottom end of the plug (44) is fixedly connected to a stop (48), and the diameter of the stop (48) is larger than the diameter of the sealing ring (47).

6. The finishing mill spraying device according to claim 1, characterized in that: The surface of the liquid guide tube (2) is fixedly connected with two fixing rods (410).

7. The finishing mill spraying device according to claim 1, characterized in that: A stop bar (411) is fixedly connected to the top end of the liquid guide tube (3).

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