Box-type resistance furnace

Abstract

The utility model provides a box-type resistance furnace which comprises a furnace body and a furnace door hinged to the furnace body, the bottom of the furnace body is placed on the ground through a supporting base, a first heat insulation plate and a second heat insulation plate are inserted into the opposite sides of the furnace body in the width direction correspondingly, and the first heat insulation plate and the second heat insulation plate are both in sliding connection with the furnace body. A third heat insulation plate is arranged between the first heat insulation plate and the second heat insulation plate The third heat insulation plate is mounted on the supporting seat through a lifting mechanism; the lifting mechanism can adjust the height of the third heat insulation plate in the furnace body in the vertical direction, and when the first heat insulation plate, the second heat insulation plate and the third heat insulation plate are coplanar in the furnace body, the inner space can be sequentially divided into a heating area and a cooling area from top to bottom. According to the box-type resistance furnace, the internal space of the furnace body is divided into the cooling area and the heat dissipation area, materials can be heated and cooled in the furnace body at the same time, and compared with an existing box-type resistance furnace, the high-temperature materials do not need to be taken out, and workers are protected to a certain degree.

Description

Technical Field

[0001] This application relates to the technical field of resistance furnaces, and particularly to a box-type resistance furnace. Background Art

[0002] The box-type resistance furnace is a common heat treatment equipment, which is divided into vertical, horizontal, split and integrated types. It usually uses resistance wires, silicon carbide rods, and silicon molybdenum rods as heating elements, and is widely used in the production and experiments of ceramics, metallurgy, electronics, glass, chemical industry, machinery, refractory materials, new material development, special materials, building materials and other fields; the placement rack for carrying and placing materials in the box-type resistance furnace is usually located inside the furnace body. In the actual operation process, especially after the materials in the furnace are heated to the set temperature, since the materials have a high temperature after being heat-treated by the box-type resistance furnace, when the staff takes out the materials in the furnace, they need to open the furnace door, reach their hands into the furnace, and take out the materials in the furnace. During this process, the staff is at risk of being scalded.

[0003] In the prior art, there are already some box-type resistance furnaces. For example, the patent number CN213578739U discloses a safe box-type resistance furnace, which includes a furnace body and a furnace door hinged to the furnace body. A fixing plate is provided on the end face of the furnace door facing the inside of the furnace body, and the fixing plate extends into the furnace body. The staff places the materials to be heated on the fixing plate, and then closes the furnace door to heat the materials on the fixing plate. After heating is completed, the staff opens the furnace door, and the materials placed on the fixing plate are taken out of the furnace body together with the furnace door.

[0004] However, there are still two problems with the existing box-type resistance furnaces when cooling the materials: one is that in the initial stage of cooling when the materials are just taken out of the furnace body, the temperature on the surface of the materials is relatively high, and the dust from the outside adheres to the surface of the materials and is not easy to remove; the other is that the high-temperature materials need to be constantly watched during the cooling period, especially for a period of time just after being taken out of the furnace, to avoid being touched by others and scalding them. Summary of the Utility Model

[0005] This application provides a box-type resistance furnace to solve the problems existing in the resistance furnace in the above prior art.

[0006] This application provides a box-type resistance furnace, which includes a furnace body and a furnace door hinged to the furnace body. The bottom of the furnace body is placed on the ground through a support seat;

[0007] A first heat insulation plate and a second heat insulation plate are respectively inserted on opposite sides in the width direction of the furnace body, and both the first heat insulation plate and the second heat insulation plate are slidably connected to the furnace body;

[0008] A third heat insulation plate is provided between the first heat insulation plate and the second heat insulation plate; the third heat insulation plate is installed on the support base through a lifting mechanism; the lifting mechanism can adjust the height of the third heat insulation plate in the furnace body in the vertical direction;

[0009] When the first heat insulation plate, the second heat insulation plate and the third heat insulation plate are coplanar in the furnace body, the internal space thereof can be divided into a heating area and a cooling area from top to bottom in sequence.

[0010] Further, the lifting mechanism includes an electric telescopic rod and two sleeves. The two sleeves are respectively located on both sides of the electric telescopic rod, and a secondary rod is slidably inserted into each of the two sleeves; the lower end of the electric telescopic rod and the lower ends of the two sleeves are fixedly installed on the support base. The output end of the electric telescopic rod and the upper end of the secondary rod both pass upward through the bottom plate of the furnace body and are connected to the third heat insulation plate, and the electric telescopic rod and the two secondary rods are both slidably connected to the bottom plate of the furnace body.

[0011] Further, sliders are provided on the first heat insulation plate and the second heat insulation plate, and sliding grooves matching the sliders are formed on the back plate of the furnace body.

[0012] Further, limit blocks are provided on the lower end surfaces of the first heat insulation plate and the second heat insulation plate.

[0013] Further, a cooling pipe and a heat dissipation pipe are provided in the cooling area, and the cooling pipe and the heat dissipation pipe are both fixedly installed on the inner wall of the furnace body through pipe clamps.

[0014] Further, the air outlets of the cooling pipe and the heat dissipation pipe both face upward.

[0015] Further, a heating unit is provided on the inner wall of the heating area.

[0016] Compared with the prior art, the beneficial effects of the present application are embodied in:

[0017] When the resistance furnace of the present application is in use, workers can first place the material to be sintered on the third heat insulation plate, and adjust the position of the third heat insulation plate in the vertical direction in the furnace body through the lifting mechanism. When the third heat insulation plate is coplanar with the first heat insulation plate and the second heat insulation plate, the first heat insulation plate, the second heat insulation plate and the third heat insulation plate can divide the internal space of the furnace body into an upper heating area and a lower cooling area. At this time, the material on the third heat insulation plate is exactly in the closed heating area, so that the material can be heated and sintered in the heating area like a normal resistance furnace;

[0018] When the material needs to be cooled after the heating is completed, the worker can drive the third heat insulation plate to move the material downward into the cooling area in the furnace body by controlling the lifting mechanism. At the same time, the first heat insulation plate and the second heat insulation plate are slid along the width direction of the furnace body, so that they move towards each other to separate the heating area from the cooling area again, thereby preventing the hot air in the heating area from diffusing into the cooling area and affecting the cooling efficiency of the cooling area;

[0019] In this application, a separate cooling area is set in the furnace to enable the fired material to complete the cooling operation in the furnace body, avoiding the material from contacting the outside world when it is still at a high temperature after heating is completed, and preventing dust and other impurities from contaminating the material, ensuring the production quality of the material; moreover, cooling in the furnace body can also prevent the high-temperature material from scalding other people. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 For the present application Figure 1 It is an enlarged schematic diagram of part A in the present application;

[0023] Figure 3 It is another schematic diagram of the overall structure of the present application;

[0024] Figure 4 For the present application Figure 3 It is an enlarged schematic diagram of part B in the present application;

[0025] Figure 5 It is a schematic diagram of the structure of the rear view angle of the present application;

[0026] Figure 6 For the present application Figure 5 It is an enlarged schematic diagram of part C in the present application;

[0027] Figure 7 It is a schematic diagram of the structure of the front view angle of the present application;

[0028] Explanation of the Reference Numerals in the Drawings:

[0029] 1: Furnace body; 2: Furnace door; 3: Heating zone; 4. Cooling zone; 5: Support base; 6: First heat insulation board; 7: Second heat insulation board; 8: Third heat insulation board; 9: Lifting mechanism; 91: Electric telescopic rod; 92: Sleeve; 10: Sub-rod; 11: Bottom plate; 12: Slide block; 13: Back plate; 14: Chute; 15: Limit block; 16: Cooling pipe; 17: Heat dissipation pipe; 18: Pipe clamp; 19: Heating unit; 20: Handle; 21: Air vent. Detailed implementation manner

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts also belong to the scope of protection of the present application.

[0031] Refer to Figures 1 - 7 , the box-type resistance furnace provided by the present application includes a furnace body 1 and a furnace door 2 hinged to the furnace body 1. The bottom of the furnace body 1 is placed on the ground through a support base 5;

[0032] A first heat insulation board 6 and a second heat insulation board 7 are respectively inserted on a pair of opposite sides in the width direction of the furnace body 1, and both the first heat insulation board 6 and the second heat insulation board 7 are slidably connected to the furnace body 1;

[0033] A third heat insulation board 8 is provided between the first heat insulation board 6 and the second heat insulation board 7; the third heat insulation board 8 is installed on the support base 5 through a lifting mechanism 9; the lifting mechanism 9 can adjust the height of the third heat insulation board 8 in the furnace body 1 in the vertical direction;

[0034] When the first heat insulation board 6, the second heat insulation board 7 and the third heat insulation board 8 are coplanar in the furnace body 1, the internal space thereof can be divided into a heating zone 3 and a cooling zone 4 from top to bottom in sequence.

[0035] In the above embodiments, the existing box-type resistance furnace uses the method of heating inside the furnace body 1 and cooling outside the furnace body 1. Since the temperature of the material is relatively high, it is extremely inconvenient to take the material out of the furnace body 1 and it is easy to scald the staff.

[0036] When the box-type resistance furnace of the present application needs to heat the material, the third heat insulation board 8 is pushed upward by the lifting mechanism 9 to be coplanar with the first heat insulation board 6 and the second heat insulation board 7, and the material is in the heating zone for heating;

[0037] After the heating is completed, the third heat insulation plate 8 is lowered by the lifting mechanism 9. At the same time, the first heat insulation plate 6 and the second heat insulation plate 7 are pushed towards each other. The first heat insulation plate 6 and the second heat insulation plate 7 divide the internal space of the furnace body 1 into a heating area 3 and a cooling area 4. The material is located in the cooling area 4 for cooling. The first heat insulation plate 6 and the second heat insulation plate 7 can block the high temperature in the heating area 3 within the heating area 3, preventing the hot air from diffusing into the cooling area 4;

[0038] After the cooling is completed and reheating is required, since the furnace door 2 of the furnace body 1 is in the closed state at all times except when taking out the cooled material, the heat in the heating area 3 can be reused during the next heating, and there is no need to preheat the heating area 3 first, saving resources.

[0039] In this application, both the heating and cooling of the material are carried out inside the furnace body 1. That is, after the heating is completed, there is no need to expose the material with high temperature outside the furnace body 1, which can prevent dust in the air from adhering to the high-temperature material and integrating with the material, affecting the quality of the material; compared with cooling the material outside the furnace body 1, the high-temperature material in this application is cooled inside the furnace body 1, which also avoids the problem of the high-temperature material scalding the staff or other personnel.

[0040] Further, refer to Figure 1 , the lifting mechanism 9 includes an electric telescopic rod 91 and two sleeves 92. The two sleeves 92 are respectively located on both sides of the electric telescopic rod 91, and a secondary rod 10 is slidably inserted into each of the two sleeves 92; the lower ends of the electric telescopic rod 91 and the two sleeves 92 are fixedly installed on the support base 5. The output end of the electric telescopic rod 91 and the upper end of the secondary rod 10 both pass upward through the bottom plate 11 of the furnace body 1 and are connected to the third heat insulation plate 8, and the electric telescopic rod 91 and the two secondary rods 10 are slidably connected to the bottom plate 11 of the furnace body 1.

[0041] In a possible implementation manner, the output end of the electric telescopic rod 91 and the upper end of the secondary rod 10 are both connected to the third heat insulation plate 8, which can ensure the stability of the heat insulation plate during the process of pushing the third heat insulation plate up and down.

[0042] Among them, there are two sets of sleeves 92 and secondary rods 10, and they are symmetrically arranged at both ends of the electric telescopic rod 91. During the lifting process of the electric telescopic rod 91, the upper ends of the two secondary rods 10 are respectively connected to both sides of the third heat insulation plate 8, which can play a guiding role in the movement of the electric telescopic rod 91.

[0043] Further, refer to Figures 5 - 6 , the first heat insulation plate 6 and the second heat insulation plate 7 are provided with sliders 12, and the back plate 13 of the furnace body 1 is provided with a chute 14 matching the sliders 12.

[0044] In the above embodiments, the sliders 12 of the first heat insulation plate 6 and the second heat insulation plate 7 are inserted into the sliding grooves 14. The cooperation between the sliders 12 and the sliding grooves 14 can assist the first heat insulation plate 6 and the second heat insulation plate 7 to slide smoothly in the furnace body 1, and avoid abrasion of the inner wall of the furnace body 1 when the first heat insulation plate 6 and the second heat insulation plate 7 slide inside the furnace body 1.

[0045] In addition, to facilitate pulling the first heat insulation plate 6 and the second heat insulation plate 7 to slide in the furnace body 1, handles 20 are provided on both the first heat insulation plate 6 and the second heat insulation plate 7. By providing the handles 20, it is convenient for workers to pull the first heat insulation plate 6 and the second heat insulation plate 7.

[0046] Furthermore, referring to Figures 1 - 2 , limiting blocks 15 are provided on the lower end surfaces of both the first heat insulation plate 6 and the second heat insulation plate 7.

[0047] In a possible implementation manner, to avoid mutual friction between the first heat insulation plate 6, the second heat insulation plate 7 and the third heat insulation plate 8, when the material is heated in the heating zone 3 and is ready to drive the lifting mechanism 9 to drive the third heat insulation plate 8 to move the material to the cooling zone 4, first pull the first heat insulation plate 6 and the second heat insulation plate 7 a little away from the third heat insulation plate 8, lower the third heat insulation plate 8 a little, and then push the first heat insulation plate 6 and the second heat insulation plate 7 together. Since the furnace body 1 is always in a closed state during this process, to avoid a large distance of pulling the first heat insulation plate 6 and the second heat insulation plate 7 outwards and a large amount of hot air in the heating zone 3 diffusing into the cooling zone 4, the limiting blocks 15 are provided to limit the outward movement distance of the first heat insulation plate 6 and the second heat insulation plate 7.

[0048] Furthermore, cooling pipes 16 and heat dissipation pipes 17 are provided in the cooling zone 4, and both the cooling pipes 16 and the heat dissipation pipes 17 are fixedly installed on the inner wall of the furnace body 1 through pipe clamps 18.

[0049] In a possible implementation manner, the cooling pipe 16 is connected to an external cooling system, and air inlets 21 are provided on the cooling pipe 16 to introduce cold air into the cooling zone 4 to cool the material in the cooling zone 4; the heat dissipation pipe 17 is connected to an external heat dissipation system, and air inlets 21 are also provided on the heat dissipation pipe 17 to discharge the hot air in the cooling zone 4 through the external heat dissipation system.

[0050] Furthermore, referring to Figures 3 - 4 , the air inlets 21 of both the cooling pipes 16 and the heat dissipation pipes 17 face upwards.

[0051] In a possible implementation manner, the air inlets 21 of the cooling pipes 16 are arranged upwards to avoid the cold air blown out by the cooling pipes 16 directly blowing on the surface of the material. When the material is in a high-temperature state, if the cold air directly blows on the surface of the material, cracks are likely to occur; the air inlets 21 of the heat dissipation pipes 17 face upwards because hot air floats upwards, which is convenient for discharging the hot air fully.

[0052] Further, a heating unit 19 is provided on the inner wall of the heating zone 3.

[0053] In a possible implementation, the heating unit 19 is evenly arranged on the inner wall of the heating zone 3 to ensure that the material is evenly heated in the heating zone 3.

[0054] The application process of the box-type resistance furnace of the present application in actual work is as follows: When in use, open the furnace door 2, place the material on the third heat insulation plate 8, start the electric telescopic rod 91, the electric telescopic rod 91 moves upward, pushes the third heat insulation plate 8 upward, and the two sub-rods 10 slide upward in the two sleeves 92. After pushing the third heat insulation plate 8 to the same height as the first heat insulation plate 6 and the second heat insulation plate 7, turn off the electric telescopic rod 91, push the first heat insulation plate 6 and the second heat insulation plate 7 in the direction of the third heat insulation plate 8 until the first heat insulation plate 6 and the second heat insulation plate 7 contact both sides of the third heat insulation plate 8, close the furnace door 2, turn on the heating unit 19 to heat the material. After heating is completed, pull the first heat insulation plate 6 and the second heat insulation plate 7 in the direction away from the third heat insulation plate 8, start the electric telescopic rod 91 again, bring the material to the cooling zone 4, and then turn off the electric telescopic rod 91 (the distance that the electric telescopic rod 91 moves upward or downward can be set in advance, or when the sub-rod 10 moves to the upper limit position in the sleeve 92, the third heat insulation plate 8 just reaches the same height as the first heat insulation plate 6 and the second heat insulation plate 7), start the external cooling system connected to the cooling pipe 16 to cool the cooling zone 4, and at the same time start the external heat dissipation system of the heat dissipation pipe 17 to discharge the excess heat in the cooling zone 4. After cooling is completed, open the furnace door 2 and take out the material.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A box-type resistance furnace, comprising a furnace body (1) and a furnace door (2) hinged to the furnace body (1), characterized in that: The bottom of the furnace body (1) is placed on the ground via a support base (5); A first heat insulation board (6) and a second heat insulation board (7) are respectively inserted into opposite sides of the furnace body (1) in the width direction, and the first heat insulation board (6) and the second heat insulation board (7) are both slidably connected to the furnace body (1); A third heat insulation board (8) is provided between the first heat insulation board (6) and the second heat insulation board (7); the third heat insulation board (8) is installed on the support seat (5) via a lifting mechanism (9); the lifting mechanism (9) can adjust the height of the third heat insulation board (8) in the furnace body (1) along the vertical direction; When the first heat insulation board (6), the second heat insulation board (7) and the third heat insulation board (8) are coplanar in the furnace body (1), the internal space thereof can be divided into a heating zone (3) and a cooling zone (4) from top to bottom.

2. The box-type resistance furnace according to claim 1, characterized in that: The lifting mechanism (9) comprises an electric telescopic rod (91) and two sleeves (92), the two sleeves (92) are respectively located on both sides of the electric telescopic rod (91), and a sub-rod (10) is slidably inserted into each of the two sleeves (92); the lower end of the electric telescopic rod (91) and the lower ends of the two sleeves (92) are fixedly mounted on the support seat (5), the output end of the electric telescopic rod (91) and the upper end of the sub-rod (10) are both connected to the third heat insulation board (8) after passing through the bottom plate (11) of the furnace body (1) upwards, and the electric telescopic rod (91) and the two sub-rods (10) are both slidably connected to the bottom plate (11) of the furnace body (1).

3. The box-type resistance furnace according to claim 1, characterized in that: The first heat insulation board (6) and the second heat insulation board (7) are provided with sliding blocks (12), and the back plate (13) of the furnace body (1) is provided with sliding grooves (14) matching the sliding blocks (12).

4. The box-type resistance furnace according to claim 1, characterized in that: Limit blocks (15) are provided on the lower end surface of the first heat insulation board (6) and the lower end surface of the second heat insulation board (7).

5. The box-type resistance furnace according to claim 1, characterized in that: A cooling pipe (16) and a heat dissipation pipe (17) are provided in the cooling zone (4); the cooling pipe (16) and the heat dissipation pipe (17) are fixedly mounted on the inner wall of the furnace body (1) via a pipe clamp (18).

6. The box-type resistance furnace according to claim 5, characterized in that: The air outlets (21) of the cooling pipe (16) and the heat dissipation pipe (17) are both facing upward.

7. The box-type resistance furnace according to any one of claims 1 to 6, characterized in that: A heating unit (19) is provided on the inner wall of the heating zone (3).

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