A heat preservation box for steel bar heat treatment processing

Abstract

The utility model relates to a heat preservation box for steel bar heat treatment processing belongs to steel bar heat treatment technical field. The heat preservation box for steel bar heat treatment processing, include: base, the base top fixedly connected with the box, the box top is provided with the apron, the both sides of box all are set up with the access -exit mouth that communicates with the heat preservation cavity, the heat preservation cavity is distributed with a plurality of symmetrical settings support in, the support is rotatably connected with the guide wheel on, the guide wheel surface is set up with the limit slot that corresponds with steel bar, the access -exit mouth diameter corresponds with steel bar diameter setting, the heat preservation box is set up through the cooperation of box, apron and heat preservation cavity, provides the stable heat preservation space for steel bar before entering the water tank after heating. The guide wheel and the limit slot that set up can accurately guide steel bar to convey, cooperate with the access -exit mouth that is adapted to the diameter of steel bar, reduced the swing and heat loss in the steel bar conveying process, the steel bar is convenient for fast in and out heat preservation cavity, improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steel bar heat treatment technology, and in particular to an insulation box for steel bar heat treatment processing. Background Technology

[0002] Heat treatment of steel bars is a key process that alters the internal structure of steel bars by controlling the heating, holding, and cooling processes, thereby obtaining desired properties (such as hardness, strength, toughness, wear resistance, and machinability). This is a very common and important process in manufacturing, applied to various parts machined from bar stock, such as shafts, gears, bolts, molds, and cutting tools.

[0003] As shown in the reference case "An Environmentally Friendly Vertical Insulated Box for PC Steel Bar Production" (Announcement No. CN216035941U), the box includes a box body. A heater is installed on the inner wall of the box body, and an insulation layer is fixedly connected to the inner wall. A partition is provided inside the box body, with both ends of the partition fixedly connected to the outer surface of the insulation layer. The heater is located inside the partition. Two fans are installed on the inner wall of the partition. The partition has an air outlet and an air inlet. A motor is installed on the upper surface of the box body, and a rotating shaft is fixedly connected to the output end of the motor. This utility model has a reasonable design structure. Through the coordinated design of connecting rods, a moving cylinder, an adjusting nut, and a stop rod, the disc-shaped PC steel bar is hung on the upper connecting rod. The combined action of the two connecting rods secures the disc-shaped PC steel bar, preventing it from moving. The vertical placement method avoids excessive local temperature differences, ensuring product quality.

[0004] However, the above-mentioned insulated box is cumbersome to use when taking out the steel bars, requiring frequent opening and closing of the box door, resulting in poor insulation and affecting production efficiency. Utility Model Content

[0005] Therefore, it is necessary to provide an insulated box for heat treatment of steel bars to address the problem that it is inconvenient to handle steel bars, requiring the opening and closing of the box door, which affects production efficiency.

[0006] A heat-insulating box for heat treatment of steel bars includes: a base, a box body fixedly connected to the top of the base, a cover plate provided on the top of the box body, and a material guiding mechanism installed on the box body; the material guiding mechanism includes a heat-insulating cavity opened inside the box body, inlet and outlet ports communicating with the heat-insulating cavity are opened on both sides of the box body, a plurality of symmetrically arranged supports are distributed inside the heat-insulating cavity, guide wheels are rotatably connected to the supports, the surface of the guide wheels is provided with limiting grooves corresponding to the steel bars, and the diameter of the inlet and outlet ports is set to correspond to the diameter of the steel bars.

[0007] In one embodiment, the guide wheel is located in the center of the box, and the steel bar is coaxially arranged with the line connecting the inlet and outlet.

[0008] In one embodiment, the material guiding mechanism further includes a cover opening assembly, which includes symmetrically arranged fixed blocks, a connecting block rotatably connected between the fixed blocks, and a baffle fixedly connected to the connecting block, the diameter of which is larger than the diameter of the inlet and outlet.

[0009] In one embodiment, the cover opening assembly is provided in two sets, one set is provided on the outer surface of the box and the other set is provided on the inner wall of the box, and the two sets of cover opening assemblies are respectively provided with two inlet and outlet ports.

[0010] In one embodiment, a limiting strip is fixedly connected to the upper part of the insulation cavity, the cover plate is fitted to the top of the limiting strip, a sealing gasket is fixedly connected to the bottom of the cover plate, the sealing gasket is tightly fitted to the top edge of the box, and a handle is also provided on the top of the cover plate.

[0011] In one embodiment, the insulation cavity is filled with high-temperature hollow bricks and asbestos.

[0012] In one embodiment, the insulation cavity is filled with high-temperature iron pipes and asbestos.

[0013] In one embodiment, the number of guide wheels is not less than three, and the distance between two adjacent guide wheels is equal, and an asbestos gasket is pasted on the inner wall of the limiting groove.

[0014] In one embodiment, the housing is further provided with a sealing mechanism, which includes positioning blocks disposed on both sides of the opening assembly. A connecting shaft connected to a connecting block is rotatably connected to the positioning block. A torsion spring is disposed between the positioning block and the fixing block. One end of the torsion spring is fixedly connected to the surface of the connecting shaft, and the other end is fixedly connected to one side of the positioning block. A sealing ring corresponding to the baffle is fixedly connected to the surface of the housing. Beneficial effects

[0015] 1. The aforementioned insulation box, through the cooperation of the box body, cover plate, and insulation cavity, provides a stable insulation space for the steel bars before they enter the water tank after heating. The guide wheels and limiting grooves precisely guide the steel bars during transport, and the inlet and outlet ports, which are adapted to the diameter of the steel bars, reduce shaking and heat loss during transport, facilitating rapid entry and exit of the steel bars into the insulation cavity and improving production efficiency.

[0016] 2. An opening assembly is provided. The movement of the steel rod pushes the baffle and connecting block to rotate along the fixed block without affecting the movement of the steel rod. When the steel rod is fully inside the box, the baffle closes under the action of gravity, reducing heat loss and further improving the insulation effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a structural schematic diagram of the base, housing, and cover plate of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the internal structure of the box of this utility model;

[0022] Figure 5 This is a schematic diagram of the material guiding mechanism of this utility model.

[0023] Figure label:

[0024] 100. Base; 110. Box body; 120. Cover plate; 200. Material guiding mechanism; 210. Insulation cavity; 220. Bracket; 230. Guide wheel; 240. Limiting groove; 250. Fixing block; 260. Connecting block; 270. Baffle; 280. Inlet / outlet; 300. Sealing mechanism; 310. Positioning block; 320. Torsion spring; 330. Sealing ring. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The following is combined with Figures 1-5 This invention describes an insulated box for heat treatment of steel bars.

[0027] In one embodiment, a heat-insulating box for heat treatment of steel bars includes: a base 100, a box body 110 fixedly connected to the top of the base 100, a cover plate 120 provided on the top of the box body 110, and a material guiding mechanism 200 installed on the box body 110; the material guiding mechanism 200 includes a heat-insulating cavity 210 opened inside the box body 110, and inlet and outlet ports 280 connected to the heat-insulating cavity 210 are opened on both sides of the box body 110; a plurality of symmetrically arranged supports 220 are distributed inside the heat-insulating cavity 210; guide wheels 230 are rotatably connected to the supports 220; the surface of the guide wheels 230 is provided with a limiting groove 240 corresponding to the steel bar; and the diameter of the inlet and outlet ports 280 is corresponding to the diameter of the steel bar.

[0028] like Figure 1 , Figure 4 and Figure 5 As shown, the guide wheel 230 is centrally located inside the housing 110, and the steel rod is coaxially aligned with the inlet / outlet 280. A limiting strip is fixedly connected to the upper part of the insulation cavity 210. The cover plate 120 is fitted against the top of the limiting strip, and a sealing gasket is fixedly connected to the bottom of the cover plate 120. The sealing gasket is tightly fitted against the top edge of the housing 110, and a handle is also provided on the top of the cover plate 120. The insulation cavity 210 is filled with high-temperature hollow bricks and asbestos. The insulation cavity 210 is also filled with high-temperature iron pipes and asbestos. There are at least three guide wheels 230, and the distance between adjacent guide wheels 230 is equal. An asbestos gasket is adhered to the inner wall of the limiting groove 240. The housing 110 is also provided with a sealing mechanism 300. The sealing mechanism 300 includes positioning blocks 310 disposed on both sides of the opening assembly. A connecting shaft connected to the connecting block 260 is rotatably connected to the positioning block 310. A torsion spring 320 is disposed between the positioning block 310 and the fixing block 250. One end of the torsion spring 320 is fixedly connected to the surface of the connecting shaft, and the other end is fixedly connected to one side of the positioning block 310. A sealing ring 330 corresponding to the baffle 270 is fixedly connected to the surface of the housing 110.

[0029] In this embodiment, the base 100 provides stable support for the entire insulation box, and the box body 110 and the cover plate 120 cooperate to form a closed insulation space. The limiting strip positions the cover plate 120, ensuring a precise fit with the box body 110, while the sealing gasket further enhances the sealing of the box body 110, reducing heat loss. The handle on the top of the cover plate 120 facilitates opening and closing for operators. The high-temperature hollow bricks, high-temperature iron pipes, and asbestos filling the insulation cavity 210 utilize their excellent insulation properties to effectively maintain a stable temperature inside the box. Operators can replace the high-temperature hollow bricks and high-temperature iron pipes filling the insulation cavity 210 by opening the cover plate 120. Multiple equally spaced guide wheels 230 and limiting grooves 240 guide and transport the steel bars, improving the heat treatment efficiency of the steel bars. The asbestos gasket not only prevents damage caused by direct friction between the steel bars and the guide wheels 230 but also assists in insulation, preventing heat conduction caused by direct contact between the steel bars and the guide wheels 230. The steel bars are coaxially arranged with the inlet and outlet ports 280°, ensuring the coaxiality of the steel bar conveying and reducing shaking and heat loss during the conveying process.

[0030] The base 100 is made of high-strength cast iron with anti-slip textured bottom to enhance friction with the ground and prevent displacement of the insulation box due to vibrations caused by the steel rod conveying during operation. The box body 110 adopts a double-layer steel plate structure, with an inner layer of high-temperature resistant alloy steel plate and an outer layer of ordinary carbon steel plate. A gap is reserved between the two layers of steel plates to further enhance the thermal insulation performance of the box body 110.

[0031] The torsion spring 320 is made of high-temperature resistant spring steel and is in a pre-tightened state in its free state. When the steel bar passes through the inlet / outlet 280, the baffle 270 is pushed open, and the connecting shaft rotates synchronously with the connecting block 260. The torsion spring 320 is further torsionated and stores elastic potential energy. After the steel bar has completely passed through, the torsion spring 320 releases its potential energy, driving the connecting block 260 to reset through the connecting shaft. This causes the baffle 270 to automatically fit against the sealing ring 330, completing the sealing without manual operation, thus improving operational convenience and sealing timeliness. The sealing ring 330 is made of high-temperature resistant silicone rubber with a trapezoidal cross-section. When the baffle 270 resets under the action of the torsion spring 320, the edges of the baffle 270 tightly press against the sealing ring 330, forming a multi-layer sealing structure. By blocking the inlet / outlet 280 with the baffle 270 and filling the gap between the baffle 270 and the housing 110 with the elastic deformation of the sealing ring 330, the risk of heat loss from the gaps is significantly reduced, further improving the insulation effect. By automatically resetting the mechanical system, the problems of poor sealing and delayed response that exist in the traditional manual closing baffle 270 are solved. This ensures that the insulation box maintains a highly efficient sealing state during the continuous transport of steel bars, further reducing temperature fluctuations and providing a more stable environment for the uniform transformation of the steel bar structure.

[0032] like Figure 2 , Figure 3 and Figure 4 As shown, the material guiding mechanism 200 also includes a cover opening assembly. The cover opening assembly includes symmetrically arranged fixing blocks 250, with connecting blocks 260 rotatably connected between the fixing blocks 250. A baffle 270 is fixedly connected to the connecting block 260, and the diameter of the baffle 270 is larger than the diameter of the inlet / outlet 280. Two sets of cover opening assemblies are provided, one set is set on the outer surface of the housing 110, and the other set is set on the inner wall of the housing 110. The two sets of cover opening assemblies are respectively set corresponding to the two inlet / outlet 280.

[0033] In this embodiment, the opening assembly controls the opening and closing of the inlet / outlet 280 through the cooperation of the fixing block 250, the connecting block 260, and the baffle 270. When a steel rod needs to enter or exit, the steel rod pushes the baffle 270 at the corresponding position, causing the connecting block 260 to rotate and open. When the steel rod is fully inside the insulation cavity 210, the baffle 270 closes under gravity. Since its diameter is larger than the diameter of the inlet / outlet 280, it effectively prevents heat loss from the inlet / outlet 280. The two sets of opening assemblies seal the two inlet / outlet 280 from the inside and outside of the box 110 respectively, further enhancing the sealing of the insulation box and improving the insulation effect without affecting the transportation of the steel rod. Moreover, the baffle 270 automatically closes when the steel rod is fully inside and outside the insulation cavity 210, reducing heat loss without manual operation.

[0034] Working Principle: After the steel bar exits the heating furnace, one end of the steel bar is horizontally inserted into the insulation chamber 210 through an inlet / outlet 280, making the steel bar tangential to the limiting groove 240, and placed onto the guide wheel 230 inside the insulation chamber 210. At this time, the baffle 270 inside the insulation chamber 210 is lifted by the steel bar and slides on the surface of the steel bar as it moves. Guided by the limiting groove 240, the steel bar is conveyed forward along the same axis as the inlet / outlet 280 until it is completely inside the insulation chamber 210. At this point, the baffle 270 closes under the action of gravity, preventing heat loss from the insulation chamber 210. The high-temperature hollow bricks, high-temperature iron pipes, and asbestos inside the insulation chamber 210 play an insulating role, maintaining a stable temperature inside the chamber. The asbestos gasket reduces frictional damage between the steel bar and the guide wheel 230. After sufficient structural transformation in the insulation chamber 210, the steel bar is sent out through another inlet / outlet 280 and enters the water tank for cooling. After the steel bars have undergone sufficient transformation, they are moved out of the insulation chamber 210 by the subsequent steel bars requiring heat preservation. At this time, the baffle 270 on the outside of the chamber 110 is lifted by the steel bars until the steel bars are completely removed from the insulation chamber 210 and then closes. Throughout the process, the guide wheels 230 ensure stable transport of the steel bars, and the insulation structure ensures stable temperature, thereby achieving uniform transformation of the steel bar structure and improving the quality of heat treatment.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heat-insulating box for heat treatment of steel bars, characterized in that, include: A base (100) is fixedly connected to a box (110) on its top. A cover plate (120) is provided on the top of the box (110). A material guiding mechanism (200) is installed on the box (110). The material guiding mechanism (200) includes an insulation cavity (210) opened inside the box body (110). Both sides of the box body (110) are provided with inlet and outlet ports (280) that communicate with the insulation cavity (210). Multiple symmetrically arranged brackets (220) are distributed in the insulation cavity (210). Guide wheels (230) are rotatably connected to the brackets (220). The surface of the guide wheels (230) is provided with a limiting groove (240) corresponding to the steel bar. The diameter of the inlet and outlet ports (280) is set to correspond to the diameter of the steel bar.

2. The heat-insulating box for heat treatment of steel bars according to claim 1, characterized in that, The guide wheel (230) is located in the center of the box (110), and the steel bar is coaxially connected to the inlet and outlet (280).

3. The heat-insulating box for heat treatment of steel bars according to claim 1, characterized in that, The material guiding mechanism (200) further includes a cover opening assembly, which includes symmetrically arranged fixing blocks (250), a connecting block (260) rotatably connected between the fixing blocks (250), and a baffle (270) fixedly connected to the connecting block (260), the diameter of the baffle (270) being larger than the diameter of the inlet / outlet (280).

4. The heat-insulating box for heat treatment of steel bars according to claim 3, characterized in that, The opening assembly is provided in two sets, one set is provided on the outer surface of the box (110), and the other set is provided on the inner wall of the box (110). The two sets of opening assemblies are respectively provided with the two inlet and outlet ports (280).

5. The heat-insulating box for heat treatment of steel bars according to claim 1, characterized in that, The insulation cavity (210) is fixedly connected to the upper part of the cavity. The cover plate (120) is fitted to the top of the limit strip. A sealing gasket is fixedly connected to the bottom of the cover plate (120). The sealing gasket is tightly fitted to the top edge of the box body (110). A handle is also provided on the top of the cover plate (120).

6. The heat-insulating box for heat treatment of steel bars according to claim 1, characterized in that, The insulation cavity (210) is filled with high-temperature hollow bricks and asbestos.

7. The heat-insulating box for heat treatment of steel bars according to claim 1, characterized in that, The insulation cavity (210) is filled with high-temperature iron pipes and asbestos.

8. The heat-insulating box for heat treatment of steel bars according to claim 1, characterized in that, The number of guide wheels (230) is not less than 3, and the distance between two adjacent guide wheels (230) is equal. An asbestos gasket is pasted on the inner wall of the limiting groove (240).

9. The heat-insulating box for heat treatment of steel bars according to claim 1, characterized in that, The housing (110) is also provided with a sealing mechanism (300). The sealing mechanism (300) includes positioning blocks (310) on both sides of the opening assembly. A connecting shaft connected to the connecting block (260) is rotatably connected to the positioning block (310). A torsion spring (320) is provided between the positioning block (310) and the fixing block (250). One end of the torsion spring (320) is fixedly connected to the surface of the connecting shaft, and the other end is fixedly connected to one side of the positioning block (310). A sealing ring (330) corresponding to the baffle (270) is fixedly connected to the surface of the housing (110).

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