Quenching device for steelmaking in steelmaking plant

Abstract

The utility model belongs to the technical field of steelmaking quenching, and particularly relates to a quenching device for steelmaking in a steelmaking plant, which comprises a quenching bath body, a lateral folding spray pipe is arranged in the quenching bath body, one end of the lateral folding spray pipe is fixedly connected with a hard expansion pipe, and the inner wall of the hard expansion pipe is fixedly connected with an inner stress baffle. A communicating pipe is fixedly connected to one end of the hard expansion pipe, four water conveying pipes are fixedly connected to the outer wall of the communicating pipe, four limiting connecting belts are arranged on the outer side of the hard expansion pipe, abutting limiting blocks are fixedly connected to the inner walls of the limiting connecting belts, and a traction reset rope is fixedly connected to one end of each limiting connecting belt; the communicating pipe and the water conveying pipe inject water into the lateral folding spray pipe, the lateral folding spray pipe is driven to expand transversely under the action of water flow in cooperation with the impact effect of the hard expansion pipe and the inner stress baffle and the supporting effect of the limiting connecting belt and the abutting limiting block on the hard expansion pipe, and then the hard expansion pipe can stretch into the steel part.

Description

Technical Field

[0001] This utility model belongs to the field of steelmaking quenching technology, specifically relating to a quenching device for steelmaking in a steel plant. Background Technology

[0002] Quenching is a crucial step in steel heat treatment. Its purpose is to rapidly cool and alter the microstructure of the steel, thereby improving its hardness, strength, and other properties. Traditional quenching tanks typically use immersion cooling tanks with water jets to circulate the liquid around the steel parts, cooling the surface of the steel parts through overall immersion. However, when quenching hollow pipes or parts with internal cavities, the flow of quenching fluid within the part's cavity is poor. The liquid flow driven by the water jets installed in the quenching tank is blocked by the side walls of the part, making it difficult to enter the part's cavity. This results in poor cooling of the part's inner side, causing uneven cooling and making the steel parts prone to thermal stress concentration or deformation. Utility Model Content

[0003] This invention provides a quenching device for steelmaking in steel plants, which can accelerate the circulation of water inside steel parts, thereby improving the quenching effect on steel parts.

[0004] This utility model provides the following technical solution: a quenching device for steelmaking in a steel plant, comprising a quenching tank body, wherein a lateral folding nozzle is provided inside the quenching tank body, a rigid expansion pipe is fixedly connected to one end of the lateral folding nozzle, an inner force-baffle is fixedly connected to the inner wall of the rigid expansion pipe, a connecting pipe is fixedly connected to one end of the rigid expansion pipe, four water supply pipes are fixedly connected to the outer wall of the connecting pipe, four limiting connecting bands are provided on the outer side of the rigid expansion pipe, abutting limiting blocks are fixedly connected to the inner wall of the limiting connecting bands, and a pulling reset rope is fixedly connected to one end of the limiting connecting bands.

[0005] The rigid expansion tube has four side connecting plates fixedly connected to its outer wall, and the four side connecting plates are respectively fixedly connected to the four limiting connecting strips.

[0006] The other end of each of the four water supply pipes is fixedly connected to an inlet pipe, and one end of the inlet pipe is fixedly connected to a pipe joint.

[0007] One end of the pull-back rope is fixedly connected to a take-up roller, which is rotatably connected to the inner wall of the quenching pool.

[0008] The limiting connecting strip is fitted with a limiting guide groove plate on one side, and the limiting guide groove plate is fixedly connected to the inner wall of the quenching pool body.

[0009] The inner wall of the limiting guide groove plate is fixedly connected with a lubricating pad, and the lubricating pad is in contact with the limiting connecting strip.

[0010] The limiting guide groove plate has an arc shape in the middle and a flat inner wall.

[0011] The beneficial effects of this utility model are as follows: by injecting water into the lateral folding nozzle through the connecting pipe and water supply pipe, and with the water flow impacting the rigid expansion pipe and the inner force baffle, as well as the support of the limiting connecting belt and the abutment limiting block for the rigid expansion pipe, the lateral folding nozzle can be driven to expand laterally under the action of water flow, thereby allowing the rigid expansion pipe to extend into the interior of the steel part, accelerating the water circulation inside the steel part, improving the cooling efficiency of the inside of the steel part, and thus improving the quenching effect of the steel part.

[0012] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

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

[0014] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0015] Figure 3 This is a structural schematic diagram of the rigid expansion tube and the limiting connecting strip in this utility model;

[0016] Figure 4 This is a schematic diagram of the connecting pipe and the limiting connecting strip in this utility model.

[0017] In the diagram: 1. Quenching tank body; 11. Lateral folding nozzle; 2. Rigid expansion pipe; 21. Internal force-bearing baffle; 22. Side connecting plate; 3. Connecting pipe; 31. Water supply pipe; 32. Water inlet pipe; 33. Pipe joint; 4. Limiting connecting belt; 41. Abutting limiting block; 42. Pulling reset rope; 421. Winding roller; 43. Limiting guide groove plate; 44. Lubricating pad. Detailed Implementation

[0018] Please see Figures 1-4 The present invention provides the following technical solution: a quenching device for steelmaking in a steel plant, comprising a quenching pool body 1, a lateral folding nozzle 11 provided inside the quenching pool body 1, a rigid expansion pipe 2 fixedly connected to one end of the lateral folding nozzle 11, an inner force-bearing baffle 21 fixedly connected to the inner wall of the rigid expansion pipe 2, a connecting pipe 3 fixedly connected to one end of the rigid expansion pipe 2, four water supply pipes 31 fixedly connected to the outer wall of the connecting pipe 3, four limiting connecting bands 4 provided on the outer side of the rigid expansion pipe 2, abutting limiting blocks 41 fixedly connected to the inner wall of the limiting connecting bands 4, and a pulling reset rope 42 fixedly connected to one end of the limiting connecting bands 4.

[0019] In this implementation scheme: Under normal conditions, the lateral folding nozzle 11 is in a retracted state. The pipe joint 33 is connected to the suction pump. The steel part is suspended under the hoisting device and enters the quenching tank body 1 at the position corresponding to the rigid expansion pipe 2. When it is necessary to quench and cool the inside of the steel part, the suction pump draws quenching liquid from the quenching tank body 1 and delivers it to the water inlet pipe 32. It is then quickly delivered into the connecting pipe 3 through multiple water supply pipes 31, and subsequently enters the lateral folding nozzle 11. Since the inner diameter of the inner force-baffle 21 is smaller than the inner diameter of the rigid expansion pipe 2, some of the liquid delivered by the lateral folding nozzle 11 will impact the inner force-baffle 21. When the inner force-baffle 21 is subjected to the liquid, it moves outward, causing the lateral folding nozzle 11 to expand. The rigid expansion pipe 2 extends into the steel part, and the subsequent influx of liquid displaces the previous liquid, realizing the circulation of liquid inside the steel part, accelerating the water circulation inside the steel part, improving the cooling efficiency inside the steel part, and thus... To improve the quenching effect on steel parts, during the expansion of the lateral folding nozzle 11, the rigid expansion tube 2 drives the limiting connecting belt 4 and the abutting limiting block 41 to move. Adjacent abutting limiting blocks 41 abut against each other. With the connection of the limiting connecting belt 4 and multiple abutting limiting blocks 41, the limiting connecting belt 4 and the abutting limiting blocks 41 cannot bend inward. The multiple limiting connecting belts 4 and abutting limiting blocks 41 in the horizontal state respectively limit the rigid expansion tube 2 in multiple directions, so that the rigid expansion tube 2 can move laterally and will not droop downward. When the multiple abutting limiting blocks 41 bend inward, they will abut against each other, but they will not be affected when bending outward. After quenching, the limiting connecting belt 4 is reset under the pulling action of the pull reset rope 42, which drives the lateral folding nozzle 11 to retract, reducing the space occupied, so that the steel parts can move upward. The winding roller 421 is connected to the drive motor, which drives the winding roller 421 to rotate in the forward and reverse directions.

[0020] Four side connecting plates 22 are fixedly connected to the outer wall of the rigid expansion tube 2. The four side connecting plates 22 are fixedly connected to four limiting connecting strips 4 respectively. By setting the side connecting plates 22, it is easy to connect the rigid expansion tube 2 to the limiting connecting strips 4, so that the rigid expansion tube 2 can drive the limiting connecting strips 4 to move.

[0021] The other end of the four water supply pipes 31 is fixedly connected to the water inlet pipe 32, and one end of the water inlet pipe 32 is fixedly connected to the pipe joint 33. By setting the water inlet pipe 32, it can play a connecting role, so that the position of the pipe joint 33 is far away from the position of the lateral folding nozzle 11, and can draw low temperature liquid far away from the steel part and deliver it to the steel part. The pipe joint 33 can facilitate the connection between the water inlet pipe 32 and the pump body.

[0022] One end of the pull-reset rope 42 is fixedly connected to a take-up roller 421, which is rotatably connected to the inner wall of the quenching pool body 1. By setting the take-up roller 421, the pull-reset rope 42 can be wound up to drive the limit connecting belt 4 to reset. When the lateral folding nozzle 11 needs to be expanded, the take-up roller 421 rotates in the opposite direction to gradually stretch the pull-reset rope 42.

[0023] A limiting guide groove plate 43 is sleeved on one side of the limiting connecting band 4, and the limiting guide groove plate 43 is fixedly connected to the inner wall of the quenching pool body 1. By setting the limiting guide groove plate 43, the limiting connecting band 4 and the abutting limiting block 41 can be limited and guided, so that the limiting connecting band 4 and the abutting limiting block 41 can move along the trajectory, and the limiting guide groove plate 43 can support the limiting connecting band 4 and the abutting limiting block 41.

[0024] A lubricating pad 44 is fixedly connected to the inner wall of the limiting guide groove plate 43, and the lubricating pad 44 is in contact with the limiting connecting strip 4. By setting the lubricating pad 44, the friction between the limiting connecting strip 4 and the limiting guide groove plate 43 can be reduced, so that the limiting connecting strip 4 and the abutting limiting block 41 can move smoothly.

[0025] The middle part of the limiting guide groove plate 43 is arc-shaped, and the inner wall of the limiting guide groove plate 43 is flat; the arc shape in the middle part of the limiting guide groove plate 43 allows the limiting connecting strip 4 to bend and change direction more smoothly.

[0026] The working principle and usage process of this utility model: A steel component is suspended under a hoisting device and enters the quenching tank body 1 at the position corresponding to the rigid expansion pipe 2. When quenching and cooling of the steel component's interior is required, a suction pump draws quenching liquid from the quenching tank body 1 and delivers it to the inlet pipe 32. This liquid is then rapidly delivered through multiple water supply pipes 31 into the connecting pipe 3, and subsequently into the lateral folding nozzle 11. Because the inner diameter of the inner force-baffle 21 is smaller than the inner diameter of the rigid expansion pipe 2, some of the liquid delivered by the lateral folding nozzle 11 will impact the inner diameter of the rigid expansion pipe 2. When the inner force-baffle 21 is in the middle, the inner force-baffle 21 moves outward under the action of the liquid, which drives the lateral folding nozzle 11 to expand. The rigid expansion tube 2 extends into the steel part, and the subsequent liquid flows in and squeezes out the previous liquid, realizing the circulation of liquid inside the steel part, accelerating the circulation of water inside the steel part, and improving the cooling efficiency of the inside of the steel part. After quenching, the limiting connecting belt 4 is reset under the pulling action of the pulling reset rope 42, which drives the lateral folding nozzle 11 to retract, reducing the space occupied, so that the steel part can move upward.

Claims

1. A quenching device for use in a steelmaking plant, characterized by: The quenching tank body (1) is provided with a lateral folding nozzle (11) inside the quenching tank body (1). One end of the lateral folding nozzle (11) is fixedly connected to a rigid expansion pipe (2). An inner force baffle (21) is fixedly connected to the inner wall of the rigid expansion pipe (2). One end of the rigid expansion pipe (2) is fixedly connected to a connecting pipe (3). Four water supply pipes (31) are fixedly connected to the outer wall of the connecting pipe (3). Four limiting connecting strips (4) are provided on the outer side of the rigid expansion pipe (2). A stop limiting block (41) is fixedly connected to the inner wall of the limiting connecting strip (4). A pull reset rope (42) is fixedly connected to one end of the limiting connecting strip (4).

2. A quenching device for steelmaking plants according to claim 1, characterized in that: The rigid expansion tube (2) has four side connecting plates (22) fixedly connected to its outer wall, and the four side connecting plates (22) are respectively fixedly connected to the four limiting connecting strips (4).

3. A quenching device for use in a steelmaking plant according to claim 1, characterized in that: The other end of each of the four water supply pipes (31) is fixedly connected to an inlet pipe (32), and one end of the inlet pipe (32) is fixedly connected to a pipe joint (33).

4. The quenching device for steelmaking at a steelworks according to claim 1, characterized in that: One end of the pull-back rope (42) is fixedly connected to a take-up roller (421), and the take-up roller (421) is rotatably connected to the inner wall of the quenching pool body (1).

5. The quenching device for steelmaking at a steelworks according to claim 1, characterized in that: The limiting connecting strip (4) is fitted with a limiting guide groove plate (43) on one side, and the limiting guide groove plate (43) is fixedly connected to the inner wall of the quenching pool body (1).

6. A quenching device for use in a steelmaking plant according to claim 5, characterized in that: A lubricating pad (44) is fixedly connected to the inner wall of the limiting guide groove plate (43), and the lubricating pad (44) is in contact with the limiting connecting strip (4).

7. A quenching device for steel production in a steel plant according to claim 6, characterized in that: The middle part of the limiting guide groove plate (43) is arc-shaped, and the inner wall of the limiting guide groove plate (43) is flat.

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