Through-water cooling device for improving hardness of steel surface

Abstract

The utility model discloses a through water cooling device for improving steel surface hardness, which belongs to the technical field of bar rolling and comprises a shell, nozzles are uniformly mounted in the shell, a drain pipe is mounted at the bottom of the shell in a penetrating manner, a filter is mounted at the top of the drain pipe, and a filter screen frame is arranged in the shell. A mounting mechanism is arranged between the filter screen frame and the shell, baffles are mounted on the two sides of the filter screen frame, flow guide blocks are symmetrically mounted in the filter screen frame, screen plates are mounted at the bottoms of one ends of the baffles, and an L-shaped plate is fixed between the screen plates. Through cooperative use of the shell, the spray head, the drain pipe, the filter, the filter screen frame, the baffle, the flow guide block, the screen plate and the L-shaped plate, impurities in water can be isolated by the filter screen frame, impurities in cooling water are further filtered, blockage of the spray head due to the fact that the impurities enter the spray head is reduced, and normal work of the spray head is ensured; the maintenance frequency of the nozzle is reduced, and the protection effect of the nozzle is improved.

Description

Technical Field

[0001] This utility model relates to the field of bar rolling technology, and in particular to a water cooling device for improving the surface hardness of steel. Background Technology

[0002] The mechanism of water cooling after bar rolling is to use the residual heat of the bar after rolling for quenching and tempering heat treatment. That is, the hot-rolled bar in the austenitic state is rapidly cooled after rolling, so that the surface of the bar is quenched to form martensite. Since the diameter of large-size bars is large, the surface of the bar cools down faster during water cooling, but the temperature drop of the core is less affected. The residual heat released from the core after the bar is quenched is transferred to the surface to form self-tempering (high-temperature tempering), which transforms the near-surface martensite structure into a fine and uniform sorbite structure, thereby improving the surface hardness and plasticity of the finished product.

[0003] For example, the utility model application with application number 202020809219.7 discloses a water cooling device for improving the surface hardness of steel used in large-size hydraulic rods. This utility model water cooling device can rapidly cool bars with diameters from φ80mm to φ180mm, thereby improving the microstructure and properties of the bars, especially the surface microstructure and properties.

[0004] The above-mentioned applications still have shortcomings:

[0005] This water-cooling device for improving the surface hardness of steel used in large-size hydraulic rods uses nozzles to deliver cooling water to the interior of the frame for cooling. However, some debris generated during the rod processing can clog the nozzle outlet, affecting the water output and potentially directly impacting the cooling effect on the rod.

[0006] To address this issue, a water-cooling device was designed to improve the surface hardness of steel. Utility Model Content

[0007] The main objective of this invention is to provide a water-cooling device for improving the surface hardness of steel, thereby solving the related technical problems mentioned in the background section.

[0008] The objective of this utility model can be achieved by adopting the following technical solution:

[0009] A water-cooling device for improving the surface hardness of steel includes a housing, with nozzles evenly installed inside the housing, a drain pipe extending through the bottom of the housing, a filter installed at the top of the drain pipe, a filter screen frame inside the housing, an installation mechanism between the filter screen frame and the housing, baffles installed on both sides of the filter screen frame, guide blocks symmetrically installed inside the filter screen frame, a mesh plate installed at the bottom of one end of each baffle, and an L-shaped plate fixed between the mesh plates.

[0010] Preferably, a hydraulic cylinder is symmetrically installed on one side of the baffle, a fixed plate is installed on the telescopic end of the hydraulic cylinder, a push plate is fixed at the bottom of the fixed plate, and the bottom of the push plate is slidably connected to the top of the guide block. A sealing plate is fixed between the ends of the push plate, and the bottom of the sealing plate is slidably connected to the inside of the L-shaped plate. A sealing frame is fixed at one end of the mesh plate, and a drain valve is installed at the bottom of the sealing frame.

[0011] Preferably, the mounting mechanism includes a mounting frame and bolts, the mounting frame is symmetrically mounted on both sides of the filter frame, and bolts are evenly mounted on the mounting frame.

[0012] Preferably, the bottom of the pusher plate is provided with bristles, and the pusher plates are all inclinedly arranged at the bottom of the guide block.

[0013] Preferably, a stop block is fixed to the top of one end of each guide block, and the stop block is a triangular stop block.

[0014] Preferably, the sealing plate is provided with brush bristles on both sides and with an elastic scraper at the bottom.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model provides a water-cooling device for improving the surface hardness of steel. Through the combined use of a shell, nozzle, drain pipe, filter, filter screen frame, baffle, guide block, mesh plate and L-shaped plate, it can isolate impurities in the water by the filter screen frame, further filter impurities in the cooling water, reduce impurities entering the nozzle and causing nozzle blockage, ensure the normal operation of the nozzle, reduce the maintenance frequency of the nozzle and improve the protection effect of the nozzle.

[0017] By using the hydraulic cylinder, fixed plate, push plate, sealing plate and sealing frame together, the sealing plate pushes the impurities toward the sealing frame until the sealing plate contacts the sealing frame and forms a sealed space. Then the drain valve can be opened to discharge the impurities. Impurities in the filter screen frame can be discharged periodically without stopping the machine, without affecting the normal working process, thereby improving the work efficiency of the staff.

[0018] By using the drain valve, mounting frame, and bolts in combination, the bolts are removed from the mounting frame in sequence, causing the mounting frame to separate from the inner wall of the outer shell. At the same time, the mounting frame drives the filter screen frame to separate from the outer shell as a whole, so that the filter screen frame can be removed from the inside of the outer shell. This facilitates the disassembly and assembly work and improves the flexibility of the water cooling device for improving the surface hardness of steel. Attached Figure Description

[0019] Figure 1 This is a front sectional view of the present invention;

[0020] Figure 2 This is a schematic diagram showing the connection between the L-shaped plate and the mesh plate of this utility model;

[0021] Figure 3 This is a schematic diagram of the bottom of the filter frame of this utility model.

[0022] In the diagram: 1. Outer shell; 2. Nozzle; 3. Drain pipe; 4. Filter; 5. Filter screen frame; 6. Baffle; 7. Hydraulic cylinder; 8. Fixing plate; 9. Push plate; 10. Guide block; 11. Installation mechanism; 12. Mesh plate; 13. L-shaped plate; 14. Sealing plate; 15. Sealing frame; 16. Drain valve; 17. Mounting frame; 18. Bolt. Detailed Implementation

[0023] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0024] Example 1

[0025] like Figures 1-3 As shown, this embodiment provides a water-cooling device for improving the surface hardness of steel, including a housing 1. Spray nozzles 2 are uniformly installed inside the housing 1. A drain pipe 3 is installed through the bottom of the housing 1. A filter 4 is installed at the top of the drain pipe 3. A filter screen frame 5 is installed inside the housing 1. An installation mechanism 11 is provided between the filter screen frame 5 and the housing 1. Baffles 6 are installed on both sides of the filter screen frame 5. Guide blocks 10 are symmetrically installed inside the filter screen frame 5. A mesh plate 12 is installed at the bottom of one end of each baffle 6. An L-shaped plate 13 is fixed between the mesh plates 12. A hydraulic cylinder 7 is symmetrically installed on one side of the baffle 6. A fixing plate 8 is installed at the telescopic end of the hydraulic cylinder 7. A push plate 9 is fixed at the bottom of the fixing plate 8, and the bottom of the push plate 9 is slidably connected to the top of the guide block 10. A sealing plate 14 is fixed between the ends of the push plates 9, and the bottom of the sealing plate 14 is slidably connected to the inside of the L-shaped plate 13. A sealing frame 15 is fixed at one end of the mesh plate 12, and a drain valve 16 is installed at the bottom of the sealing frame 15.

[0026] External cooling water is supplied to the inside of nozzle 2 via a power source pump, and sprayed onto the inside of housing 1 through nozzle 2. The rod is then transported to the inside of housing 1 and filter screen frame 5. Impurities on the rod fall into the water. The filter screen frame 5 isolates the impurities, preventing the outer nozzle 2 from contacting them. At the same time, filter 4 transports the filtered water from filter screen frame 5 to the outside through drain pipe 3 for recycling. Impurities accumulate on guide block 10 and can be discharged downwards with the water flow. Hydraulic cylinder 7 is activated. The extension end of hydraulic cylinder 7 drives fixed plate 8 and push plate 9 to move horizontally. Push plate 9 pushes the impurities on guide block 10 to one side and accumulates them on one side. Under the action of gravity, the impurities flow into the inside of screen plate 12. As push plate 9 moves, it drives sealing plate 14 to move towards sealing frame 15. Sealing plate 14 pushes the impurities towards sealing frame 15 until sealing plate 14 contacts sealing frame 15 and forms a sealed space. Then drain valve 16 can be opened to discharge the impurities. Impurities in filter screen frame 5 can be discharged periodically without stopping the machine.

[0027] Example 2

[0028] In this embodiment, as Figures 1-3 As shown, the mounting mechanism 11 includes a mounting frame 17 and bolts 18. The mounting frame 17 is symmetrically mounted on both sides of the filter frame 5, and bolts 18 are evenly mounted on the mounting frame 17.

[0029] Remove the bolts 18 one by one from the mounting frame 17, so that the mounting frame 17 is separated from the inner wall of the outer shell 1. At the same time, the mounting frame 17 drives the filter screen frame 5 to separate from the outer shell 1 as a whole, so that the filter screen frame 5 can be removed from the inside of the outer shell 1.

[0030] In this embodiment, the bottom of the push plate 9 is provided with bristles, and the push plates 9 are all inclinedly arranged at the bottom of the guide block 10.

[0031] The bristle design facilitates the removal of impurities from the guide block 10, reducing frictional damage to the top of the guide block 10.

[0032] In this embodiment, a stop block is fixed to the top of one end of the flow guide block 10, and the stop block is a triangular stop block.

[0033] The triangular baffles reduce the accumulation of impurities at the corresponding positions of the guide block 10, making it easier to clean the impurities.

[0034] In this embodiment, bristles are provided on both sides of the sealing plate 14, and an elastic scraper is provided at the bottom of the sealing plate 14.

[0035] The mesh of the screen 12 and the impurities adhering to the inside of the L-shaped plate 13 are cleaned by using a brush and an elastic scraper, respectively.

[0036] The above description is only a further 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 scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A water quenching device for increasing the hardness of a steel surface, characterized by: The utility model provides a filter device, including shell (1), the inside even installation of shell (1) is spouted (2), the bottom of shell (1) is installed with drain pipe (3) through, the top of drain pipe (3) is installed with filter (4), the inside of shell (1) is provided with filter screen frame (5), be provided with mounting mechanism (11) between filter screen frame (5) and shell (1), both sides of filter screen frame (5) are installed with baffle (6), the inside symmetry of filter screen frame (5) is installed with flow guide block (10), the bottom of baffle (6) one end is all installed with screen plate (12), the between fixed L shaped board (13) of screen plate (12).

2. The water quenching device for increasing the hardness of a steel surface according to claim 1, characterized in that: One side symmetry of baffle (6) is installed with hydraulic cylinder (7), the telescopic end of hydraulic cylinder (7) is installed with fixed plate (8), the bottom of fixed plate (8) is fixed with push plate (9), and the bottom of push plate (9) and the top of flow guide block (10) are slidably connected, the end of push plate (9) is fixed with sealing plate (14), and the bottom of sealing plate (14) and the inside of L shaped board (13) are slidably connected, one end of screen plate (12) is fixed with sealing frame (15), the bottom of sealing frame (15) is installed with blowdown valve (16).

3. The water quenching device for increasing the hardness of a steel surface according to claim 1, characterized in that: The mounting mechanism (11) includes a mounting frame (17) and a bolt (18), the mounting frame (17) is symmetrically installed on both sides of the filter screen frame (5), and the mounting frame (17) is uniformly installed with the bolt (18).

4. The water quenching device for increasing the hardness of a steel surface according to claim 2, characterized in that: The bottom of the push plate (9) is provided with bristles, and the push plate (9) is inclinedly arranged at the bottom of the flow guide block (10).

5. The water quenching device for increasing the hardness of a steel surface according to claim 1, characterized in that: The top of one end of the flow guide block (10) is fixed with a stop block, and the stop block is a triangular stop block.

6. The water quenching device for increasing the hardness of a steel surface according to claim 2, characterized in that: Both sides of the sealing plate (14) are provided with bristles, and the bottom of the sealing plate (14) is provided with an elastic scraper.

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