Cooling device for heat treatment of steel

Abstract

The invention discloses a cooling device for steel heat treatment processing, and belongs to the technical field of steel heat treatment processing. By arranging a mounting frame, a heat dissipation frame, a trapezoidal clamping block and a clamping spring, the trapezoidal clamping block is tightly attached to the bottom of a fixed clamping plate, and the trapezoidal clamping block is pressed downwards into the inner top of a concave frame until the heat dissipation frame is pushed to correspond to a rectangular groove; and meanwhile, the trapezoidal clamping blocks correspond to the trapezoidal clamping grooves in position, the trapezoidal clamping blocks are ejected out of the concave frame to be clamped into the corresponding trapezoidal clamping grooves under the rebound action of the clamping springs, and therefore the heat dissipation frame can be clamped and fixed into the rectangular mounting groove conveniently, and after being used for a certain period of time, the heat dissipation frame is not prone to falling off. When the heat dissipation frame needs to be disassembled to overhaul and clean the heat dissipation fan, a shifting plate is pressed to drive a trapezoidal clamping block to move downwards to be separated from a trapezoidal clamping groove and retract into the top in a concave frame, the heat dissipation frame is pushed to be pulled out from the interior of the mounting frame, and therefore the heat dissipation frame, the heat dissipation fan and the mounting frame can be conveniently disassembled to be overhauled or fixedly mounted.

Description

Technical Field

[0001] The invention belongs to the technical field of heat treatment of steel materials, and in particular relates to a cooling device for heat treatment of steel materials. Background Art

[0002] In order to make steel obtain the mechanical properties required during processing and use, such as hardness, strength, toughness and wear resistance, the steel needs to be heat treated. The physical structure of the steel can be changed through heat treatment methods such as decarburization or tempering to improve the performance of the steel, save metal, extend the service life of the machinery, and improve the process performance of metal materials, improve productivity and processing quality. In order to reduce stress and deformation during the heat treatment process and improve the overall quality and consistency of the product, cooling devices are often used to cool the steel during heat treatment to control and optimize the microstructure and properties of the steel.

[0003] When the coolant in the existing cooling device for heat treatment of steel is circulating and cooling, the temperature of the coolant rises after absorbing the heat of the high-temperature steel. The high-temperature coolant needs to be allowed to stand and cool down to reach a suitable temperature before it can be circulated. When the coolant is allowed to stand and cool down, a cooling fan is often used to blow cold air on the surface of the coolant to quickly reduce the temperature of the coolant. After a certain period of use, the coolant needs to be disassembled and repaired regularly. Since the cooling fan is generally fixed directly to the top of the cooling box by bolts, it is not convenient to quickly disassemble the cooling fan, which will affect the maintenance efficiency of the cooling fan. Therefore, improvement is needed. Summary of the invention

[0004] In order to overcome the above-mentioned defects, the present invention provides a cooling device for heat treatment processing of steel, which solves the problem that the existing cooling devices for heat treatment processing of steel often use cooling fans to blow cold air to flow on the surface of the coolant, thereby reducing the temperature of the coolant, and because the cooling fan is generally directly fixed on the top of the cooling box, it is inconvenient to quickly disassemble the cooling fan.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cooling device for heat treatment of steel, comprising a base, a collecting box is fixedly installed on one side of the top of the base, a cooling box is fixedly installed on the top of the base located on one side of the collecting box, a mounting frame is fixedly installed on the top of the cooling box, two groups of heat dissipation frames are symmetrically and slidably installed inside the mounting frame, a concave frame is fixedly installed on one side of the heat dissipation frame, a conduit one is provided at the top of one side of the cooling box, two groups of magnetic fixing blocks are provided on the surface of the conduit one, and the magnetic fixing blocks are adsorbed and fixed to the top of the mounting frame, a circulating water pump is provided at the bottom of one side of the collecting box, a conduit two is provided at the input end of the circulating water pump, and the conduit two is connected to the bottom of the surface of the collecting box, a conduit three is provided at the output end of the circulating water pump, and the end of the conduit three away from the circulating water pump is connected to the cooling box.

[0006] As a further solution of the present invention: a drainage ditch is provided at the central position of the bottom of the collecting box, side panels are symmetrically fixedly installed on both sides of the top of the collecting box, and multiple groups of conveying rollers are equidistantly rotatably installed between the two groups of side panels. Fixed plates are fixedly installed at the central positions of both sides of the collecting box, electric push rods are symmetrically fixedly installed on the top of the fixed plates, and a top plate is fixedly installed on the top of the four groups of electric push rods, and three groups of cooling and boosting nozzles are equidistantly fixedly installed on the bottom of the top plate between the two groups of side panels.

[0007] As a further solution of the present invention: a spiral cooling pipe is provided inside the cooling box, and both ends of the spiral cooling pipe pass through the central position of the top of both sides of the cooling box, and the two ends of the spiral cooling pipe are connected with conduit one and conduit three, a breathable mesh plate is embedded and fixedly installed on one side of the cooling box, and a rectangular groove is symmetrically provided on the top of the cooling box at the top of the spiral cooling pipe.

[0008] As a further solution of the present invention: rectangular mounting grooves are symmetrically provided on both sides of the mounting frame, and the positions of the rectangular mounting grooves correspond to those of the rectangular grooves, positioning slots are symmetrically provided on both sides of the inner wall of the rectangular mounting groove, a fixed clamping plate is fixedly installed on the top of the mounting frame at the opening on one side of the rectangular mounting groove, and a trapezoidal clamping groove is provided at the central position of the bottom of the fixed clamping plate.

[0009] As a further solution of the present invention: movable rollers are symmetrically fixedly installed at both ends of both sides of the heat dissipation frame, and the positions of the movable rollers correspond to the positions of the positioning slots. A cooling fan is fixedly installed at the bottom of the heat dissipation frame, and a protective mesh is fixedly installed at the top of the cooling fan inside the heat dissipation frame.

[0010] As a further solution of the present invention: positioning protrusions are symmetrically fixedly installed at both ends of the concave frame, and the positioning protrusions correspond to the positions of the positioning slots, and the bottom of the concave frame is symmetrically provided with mounting grooves, and a limit plate is slidably installed inside the mounting groove, and a push rod is fixedly installed on the top of the limit plate, and the top end of the push rod extends through the mounting groove to the inside of the concave frame, and trapezoidal blocks are fixedly installed on the top ends of the two groups of push rods located inside the concave frame, and the trapezoidal blocks correspond to the positions of the trapezoidal slots and have the same shape.

[0011] As a further solution of the present invention: a clamping spring is provided on the surface of the push rod at the bottom of the trapezoidal block, limiting slide grooves are symmetrically provided on the top of both sides of the inner wall of the concave frame, limiting protrusions are symmetrically fixedly installed on both sides of the trapezoidal block, and the positions of the limiting protrusions correspond to those of the limiting slide grooves, and a shift plate is fixedly installed on the bottom of one side of the trapezoidal block.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The heat sink is then pushed out of the mounting groove to allow the heat sink to move in a direction of rotation relative to the bottom of the mounting groove, thereby allowing the heat sink to move in a direction of rotation relative to the bottom of the mounting groove.

[0014] 2. In the present invention, a collecting box, a driving roller, an electric push rod, a spiral cooling pipe and a circulating water pump are provided, and the electric push rod is controlled to extend and retract to drive the top plate to move up and down between the two sets of side plates, so as to facilitate the adjustment of the distance between the cooling and boosting nozzle and the conveying roller according to the steel specifications, and the heat-treated steel is placed on the top of the conveying roller, and the circulating water pump is controlled to guide the coolant inside the collecting box into the spiral cooling pipe for cooling, and the cooled coolant is input from the conduit 1 to the cooling and boosting nozzle and sprayed toward the conveying roller, so as to push the heat-treated high-temperature steel to move on the top of the conveying roller and pass through the bottom of the cooling and boosting nozzle, so that the coolant sprayed from the cooling and boosting nozzle cools the high-temperature steel, and the coolant on the surface of the high-temperature steel slides into the collecting box under the action of gravity, and is input into the spiral cooling pipe through the circulating water pump for circulating cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the collection box, the conveying roller and the electric push rod of the present invention;

[0017] Figure 3 It is a cross-sectional structural schematic diagram of the cooling box, spiral cooling pipe and air-permeable mesh plate of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the mounting frame and the fixing card plate of the present invention;

[0019] Figure 5 It is a cross-sectional structural schematic diagram of the heat dissipation frame, the heat dissipation fan and the concave frame of the present invention;

[0020] Figure 6 It is a cross-sectional structural schematic diagram of the concave frame, the trapezoidal clamping block and the clamping spring of the present invention;

[0021] In the figure: 1, base; 2, collection box; 201, drainage trough; 202, side plate; 203, conveying roller; 204, fixing plate; 205, electric push rod; 206, top plate; 207, cooling boost nozzle; 3, cooling box; 301, spiral cooling pipe; 302, air permeable mesh plate; 303, rectangular groove; 4, mounting frame; 401, rectangular mounting groove; 402, positioning slot; 403, fixing card plate; 404, trapezoidal card slot; 5. Heat dissipation rack; 501. Moving roller; 502. Cooling fan; 503. Protective mesh; 6. Concave rack; 601. Positioning convex block; 602. Mounting slide; 603. Limiting plate; 604. Push rod; 605. Trapezoidal clamping block; 606. Clamping spring; 607. Limiting slide; 608. Limiting convex block; 609. Switch plate; 7. Conduit one; 8. Magnetic fixing block; 9. Circulating water pump; 10. Conduit two; 11. Conduit three. DETAILED DESCRIPTION

[0022] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0023] like Figure 1-6As shown, the present invention provides a technical solution: a cooling device for heat treatment of steel, comprising a base 1, a collecting box 2 is fixedly installed on one side of the top of the base 1, side plates 202 are symmetrically fixedly installed on both sides of the top of the collecting box 2, and multiple groups of conveying rollers 203 are equidistantly installed between the two groups of side plates 202. The steel is placed on the top of the conveying roller 203, and the steel is pushed to move on the top of the conveying roller 203, so that the conveying roller 203 rolls between the two groups of side plates 202, thereby facilitating the steel to move on the top of the collecting box 2. A drainage groove 201 is provided at the central position of the bottom of the collecting box 2. Due to the provision of the drainage groove 201, the coolant accumulated in the collecting box 2 flows to the drainage groove 201, and is discharged from the drainage groove 201 to the conduit 2 10;

[0024] A fixed plate 204 is fixedly installed at the central position of both sides of the collection box 2, and an electric push rod 205 is symmetrically fixedly installed on the top of the fixed plate 204. A top plate 206 is fixedly installed on the top of the four groups of electric push rods 205, and three groups of cooling and boosting nozzles 207 are fixedly installed at equal distances on the bottom of the top plate 206 between the two groups of side plates 202. The four groups of electric push rods 205 are controlled to extend and retract synchronously, thereby adjusting the position of the top plate 206 on the top of the collection box 2, and conveniently controlling the distance between the cooling and boosting nozzles 207 and the steel on the top of the conveying roller 203; the coolant is evenly sprayed from the cooling and boosting nozzles 207 to the surface of the high-temperature steel on the top of the conveying roller 203, thereby cooling the high-temperature steel.

[0025] A cooling box 3 is fixedly installed on one side of the collecting box 2 at the top of the base 1, and a spiral cooling pipe 301 is arranged inside the cooling box 3, and both ends of the spiral cooling pipe 301 pass through the central position of the top of both sides of the cooling box 3, and both ends of the spiral cooling pipe 301 are connected with conduit 1 7 and conduit 3 11, and the coolant cooled by the spiral cooling pipe 301 is input from conduit 1 7 to the cooling boost nozzle 207, and the circulating water pump 9 pumps the high-temperature coolant inside the collecting box 2 into the spiral cooling pipe 301, and the cooling fan 502 is controlled to input the cold air in the external environment into the cooling box 3, so as to cool the coolant inside the spiral cooling pipe 301, and at the same time, the spiral cooling pipe 301 can increase the contact area with the cold air, thereby improving the cooling efficiency.

[0026] A breathable mesh plate 302 is fixedly mounted on one side of the cooling box 3, a rectangular groove 303 is symmetrically arranged on the top of the spiral cooling tube 301, a mounting frame 4 is fixedly mounted on the top of the cooling box 3, and rectangular mounting grooves 401 are symmetrically arranged on both sides of the mounting frame 4, and the positions of the rectangular mounting grooves 401 and the rectangular grooves 303 correspond. Cold air from the outside is input into the cooling box 3 to perform heat exchange with the spiral cooling tube 301, so that the temperature of the cold air rises and it is dissipated from the breathable mesh plate 302, so as to avoid the air inside the cooling box 3 being unable to be discharged, resulting in an increase in the air pressure inside the cooling box 3.

[0027] Positioning slots 402 are symmetrically arranged on both sides of the inner wall of the rectangular mounting groove 401. A fixing card plate 403 is fixedly installed on the top of the opening of one side of the rectangular mounting groove 401 on the mounting frame 4. A trapezoidal card slot 404 is arranged at the central position of the bottom of the fixing card plate 403. Two groups of heat dissipation frames 5 are symmetrically and slidably installed inside the mounting frame 4. Moving rollers 501 are symmetrically and fixedly installed at both ends of both sides of the heat dissipation frames 5. The positions of the moving rollers 501 and the positioning slots 402 correspond. When the heat dissipation frames 5 are inserted into the rectangular mounting groove 401, the moving rollers 501 are snapped into the corresponding The positioning slot 402 ensures that the heat sink 5 will not be deflected or misaligned during installation. At the same time, when the heat sink 5 is pushed to move inside the rectangular installation slot 401, the moving roller 501 rolls inside the positioning slot 402, thereby reducing the friction between the heat sink 5 and the rectangular installation slot 401 during relative movement. Since the positions of the rectangular slot 303 and the rectangular installation slot 401 correspond to each other, when the heat sink 5 is clamped and fixed inside the rectangular installation slot 401, the cooling fan 502 can input the cold air in the external environment into the cooling box 3 through the rectangular slot 303.

[0028] A cooling fan 502 is fixedly installed at the bottom of the heat dissipation frame 5, and a protective mesh plate 503 is fixedly installed at the top of the heat dissipation frame 5, located on the top of the cooling fan 502. The cooling fan 502 is controlled to rotate, and the cold air in the external environment is input into the cooling box 3 through the protective mesh plate 503. At the same time, the protective mesh plate 503 can shield and protect the cooling fan 502 to prevent solid debris from directly falling on the blades of the cooling fan 502 and causing damage to the cooling fan 502.

[0029] A concave frame 6 is fixedly installed on one side of the heat dissipation frame 5, and positioning protrusions 601 are symmetrically fixedly installed on both ends of the concave frame 6, and the positions of the positioning protrusions 601 correspond to the positions of the positioning slots 402. After the positioning protrusions 601 are inserted into the corresponding positioning slots 402, the concave frame 6 is supported to prevent the concave frame 6 from falling on one side of the heat dissipation frame 5; the bottom of the concave frame 6 is symmetrically provided with mounting grooves 602, and a limiting plate 603 is slidably installed inside the mounting grooves 602. A top rod 604 is fixedly installed on the top of the limiting plate 603, and the top end of the top rod 604 passes through the mounting grooves 602 and extends to the concave frame 6. Inside the frame 6, two groups of push rods 604 are located at the top end of the concave frame 6 and are fixedly installed with a trapezoidal block 605. The trapezoidal block 605 corresponds to the position of the trapezoidal slot 404 and has the same shape. The push rod 604 is located on the surface of the bottom of the trapezoidal block 605 and is provided with a clamping spring 606. By providing the trapezoidal block 605 and the clamping spring 606, the trapezoidal block 605 is pushed upward under the rebound action of the clamping spring 606 until the trapezoidal block 605 is pushed out of the concave frame 6 and clamped into the corresponding trapezoidal slot 404, thereby clamping and fixing the concave frame 6 at the bottom of the fixed clamping plate 403.

[0030] The top of both sides of the inner wall of the concave frame 6 are symmetrically provided with limiting grooves 607, and the limiting protrusions 608 are symmetrically fixedly installed on both sides of the trapezoidal clamping block 605, and the limiting protrusions 608 correspond to the positions of the limiting grooves 607. A dial plate 609 is fixedly installed on the bottom of one side of the trapezoidal clamping block 605. Because the limiting grooves 607 and the limiting protrusions 608 are provided, when the trapezoidal clamping block 605 moves up and down on the top of the concave frame 6, the limiting protrusions 608 are driven to move inside the corresponding limiting grooves 607, thereby ensuring that the trapezoidal clamping block 605 will not tilt or deflect when moving up and down. When the heat dissipation frame 5 and the concave frame 6 are inserted into the rectangular installation groove 401, the fixed clamping plate 403 is pressed on the top of the heat dissipation frame 5 and the concave frame 6, ensuring that the heat dissipation frame 5 and the concave frame 6 will not tilt or deflect when inserted into the rectangular installation groove 401.

[0031] A conduit 7 is provided at the top of one side of the cooling box 3, and two groups of magnetic fixing blocks 8 are provided on the surface of the conduit 7, and the magnetic fixing blocks 8 are adsorbed and fixed to the top of the mounting frame 4. The magnetic fixing blocks 8 are adsorbed on the top of the mounting frame 4, so that the conduit 7 is adsorbed and fixed on the top of the mounting frame 4, ensuring that the conduit 7 will not be randomly placed on the top of the side plate 202 due to the lifting and lowering of the top plate 206, and preventing the conduit 7 from falling on the surface of the high-temperature steel and causing damage to the conduit 7.

[0032] A circulating water pump 9 is provided at the bottom of one side of the collecting box 2, a conduit 2 10 is provided at the input end of the circulating water pump 9, and the conduit 2 10 is connected to the bottom of the surface of the collecting box 2, a conduit 3 11 is provided at the output end of the circulating water pump 9, and the end of the conduit 3 11 away from the circulating water pump 9 is connected to the cooling box 3, and the circulating water pump 9 is started to pump the coolant inside the collecting box 2 into the circulating water pump 9 through the conduit 2 10, and then the coolant is pumped from the conduit 3 11 to the spiral cooling pipe 301.

[0033] The working principle of the present invention is:

[0034] Insert the two sets of heat sinks 5 into the rectangular mounting grooves 401 on both sides of the mounting frame 4 respectively, so that the moving rollers 501 on the surface of the heat sink 5 are inserted into the corresponding positioning slots 402, and the heat sink 5 is pushed to move inside the rectangular mounting groove 401, so that the heat sink 5 drives the concave frame 6 to move into the rectangular mounting groove 401. When the positioning protrusions 601 are inserted into the corresponding positioning slots 402, the trapezoidal clamping block 605 is tightly attached to the fixed clamping plate 403, and the trapezoidal clamping block 605 is pressed into the top of the concave frame 6, so that the clamping spring 606 is in The bottom of the trapezoidal clamping block 605 is compressed and deformed until the heat sink 5 and the concave frame 6 are completely inserted into the rectangular mounting groove 401, so that the trapezoidal clamping block 605 corresponds to the position of the trapezoidal clamping groove 404 at the bottom of the fixed clamping plate 403. Under the rebound effect of the clamping spring 606, the trapezoidal clamping block 605 is lifted up and clamped into the trapezoidal clamping groove 404, so that the heat sink 5 and the concave frame 6 are clamped and fixed in the rectangular mounting groove 401. Repeat the steps to clamp and fix two sets of heat sinks 5 and concave frames 6 in the corresponding rectangular mounting grooves 401.

[0035] Inject a proper amount of coolant into the collection box 2. According to the size of the heat-treated steel, control the electric push rod 205 to adjust the height of the top plate 206 on the top of the conveying roller 203, so as to adjust the distance between the cooling boost nozzle 207 and the conveying roller 203. Place the heat-treated high-temperature steel on the top of the conveying roller 203, push the steel to move through the bottom of the cooling boost nozzle 207, and start the circulating water pump 9 and the cooling fan 502 at the same time. The circulating water pump 9 pressurizes the coolant in the collection box 2 and pumps it into the The spiral cooling tube 301 is then pressurized and input from the conduit 7 to the cooling boost nozzle 207 and sprayed evenly onto the high-temperature steel moving on the top of the conveying roller 203 to cool the high-temperature steel. The coolant that has absorbed the heat of the high-temperature steel falls into the collecting box 2 and is pumped into the spiral cooling tube 301 by the circulating water pump 9. At the same time, the cooling fan 502 rotates to input the cold air in the environment into the cooling box 3 to cool the surface of the spiral cooling tube 301, so that the coolant flowing inside the spiral cooling tube 301 is cooled.

[0036] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more schemes or examples in a suitable manner.

Claims

1. A cooling device for heat treatment of steel, comprising a base (1), characterized in that: A collecting box (2) is fixedly mounted on one side of the top of the base (1); a cooling box (3) is fixedly mounted on the top of the base (1) on one side of the collecting box (2); a mounting frame (4) is fixedly mounted on the top of the cooling box (3); two groups of heat dissipation frames (5) are symmetrically and slidably mounted inside the mounting frame (4); a concave frame (6) is fixedly mounted on one side of the heat dissipation frame (5); a conduit one (7) is connected to the top of one side of the cooling box (3); two groups of magnetic fixing blocks (8) are provided on the surface of the conduit one (7); and the magnetic fixing blocks (8) are fixed to the top of the mounting frame (4); a circulating water pump (9) is provided at the bottom of one side of the collecting box (2); a conduit two (10) is provided at the input end of the circulating water pump (9), and the conduit two (10) is connected to the bottom of the surface of the collecting box (2); a conduit three (11) is provided at the output end of the circulating water pump (9), and the end of the conduit three (11) away from the circulating water pump (9) is connected to the cooling box (3).

2. A cooling device for heat treatment of steel according to claim 1, characterized in that: A drainage groove (201) is provided at the central position of the bottom of the collecting box (2); side panels (202) are symmetrically fixedly installed on both sides of the top of the collecting box (2); multiple groups of conveying rollers (203) are equidistantly rotatably installed between the two groups of side panels (202); fixed plates (204) are fixedly installed at the central position of both sides of the collecting box (2); electric push rods (205) are symmetrically fixedly installed on the top of the fixed plates (204); top plates (206) are fixedly installed on the tops of the four groups of electric push rods (205); and three groups of cooling and boosting nozzles (207) are fixedly installed on the bottom of the top plate (206) between the two groups of side panels (202) at equal intervals.

3. The cooling device for heat treatment of steel according to claim 1, characterized in that: The cooling box (3) is provided with a spiral cooling pipe (301) inside, and the two ends of the spiral cooling pipe (301) pass through the central position of the top of both sides of the cooling box (3), and the two ends of the spiral cooling pipe (301) are connected with the conduit one (7) and the conduit three (11), and a breathable mesh plate (302) is embedded and fixedly installed on one side of the cooling box (3), and the top of the cooling box (3) is symmetrically provided with a rectangular groove (303) located at the top of the spiral cooling pipe (301).

4. A cooling device for heat treatment of steel according to claim 3, characterized in that: Rectangular mounting grooves (401) are symmetrically arranged on both sides of the mounting frame (4), and the positions of the rectangular mounting grooves (401) and the rectangular grooves (303) correspond to each other; positioning slots (402) are symmetrically arranged on both sides of the inner wall of the rectangular mounting groove (401); a fixed card plate (403) is fixedly installed on the top of the mounting frame (4) at the opening of one side of the rectangular mounting groove (401); and a trapezoidal card groove (404) is arranged at the central position of the bottom of the fixed card plate (403).

5. A cooling device for heat treatment of steel according to claim 4, characterized in that: The two ends of both sides of the heat dissipation frame (5) are symmetrically fixedly installed with movable rollers (501), and the positions of the movable rollers (501) correspond to the positions of the positioning slots (402). The bottom of the heat dissipation frame (5) is fixedly installed with a cooling fan (502), and the top of the heat dissipation frame (5) is fixedly installed with a protective mesh plate (503) located on the top of the cooling fan (502).

6. A cooling device for heat treatment of steel according to claim 4, characterized in that: The two ends of the concave frame (6) are symmetrically fixedly provided with positioning protrusions (601), and the positions of the positioning protrusions (601) correspond to the positions of the positioning slots (402). The bottom of the concave frame (6) is symmetrically provided with mounting grooves (602), and a limit plate (603) is slidably installed inside the mounting grooves (602). A top rod (604) is fixedly installed on the top of the limit plate (603), and the top end of the top rod (604) passes through the mounting grooves (602) and extends into the concave frame (6). The top ends of the two groups of top rods (604) located inside the concave frame (6) are fixedly provided with trapezoidal blocks (605), and the positions of the trapezoidal blocks (605) correspond to the positions of the trapezoidal slots (404) and are the same in shape.

7. A cooling device for heat treatment of steel according to claim 6, characterized in that: A clamping spring (606) is provided on the surface of the push rod (604) located at the bottom of the trapezoidal clamping block (605); limiting slide grooves (607) are symmetrically provided on the top of both sides of the inner wall of the concave frame (6); limiting protrusions (608) are symmetrically fixedly installed on both sides of the trapezoidal clamping block (605), and the positions of the limiting protrusions (608) and the limiting slide grooves (607) correspond; and a shifting plate (609) is fixedly installed on the bottom of one side of the trapezoidal clamping block (605).

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