A well-sealed pit furnace

Abstract

The utility model discloses a well type furnace that good sealing, relate to well type furnace technical field, aims at solving the problem that the heat loss is caused easily in the furnace body working process in the mode of flange connection or bolt connection of existing, the inner wall of lower furnace body is equipped with the resistance band of heating, and is equipped with cooling assembly on the outer wall of lower furnace body, in order to assist butt joint between lower furnace body and upper furnace body, is equipped with auxiliary assembly on lower furnace body and upper furnace body, is equipped with heat -preserving mechanism on the opposite face of lower furnace body and upper furnace body, this well type furnace realizes multilayer labyrinth heat preservation through heat -preserving mechanism, the heat -preserving cotton of upper furnace body bottom surface, the partition tray and the gasket of lower furnace body top surface are closely attached, the packing in the mounting piece and the sand in the heat -preserving groove mutually cooperate, and multilayer sealing heat preservation structure is formed, and the temperature of greatly slow down, effectively improve the sealing property and heat preservation performance of furnace body, reduce the heat loss, improve the energy utilization efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pit furnace technology, and in particular to a pit furnace with good sealing performance. Background Technology

[0002] Traditional pit furnaces typically consist of an upper furnace body and a lower furnace body, usually connected by simple flanges or bolts. This connection method suffers from poor sealing, leading to heat loss during furnace operation. This not only reduces energy efficiency but also affects the uniformity and stability of the furnace temperature, ultimately impacting the heat treatment quality of the workpieces.

[0003] Therefore, this application provides a well-sealed pit furnace to meet the requirements. Utility Model Content

[0004] The purpose of this application is to provide a well-sealed pit furnace, which aims to solve the problem that existing flange or bolt connections can easily lead to heat loss during furnace operation.

[0005] To achieve the above objectives, this application provides the following technical solution: a well-sealed furnace, comprising a lower furnace body and an upper furnace body, which are slidably connected. The inner wall of the lower furnace body is provided with a heating resistance band, and a cooling component is provided on the outer wall of the lower furnace body. To facilitate the connection between the lower furnace body and the upper furnace body, auxiliary components are provided on the lower furnace body and the upper furnace body. A heat preservation mechanism is provided on the opposite surfaces of the lower furnace body and the upper furnace body.

[0006] The insulation mechanism also includes insulation grooves and insulation cotton, partitions, mounting parts, and packing. The bottom surface of the upper furnace body is provided with insulation cotton, and an annular partition is provided on one side of the insulation cotton. Mounting parts are provided on the outer wall of the partition, and packing is provided inside the mounting parts. The top surface of the lower furnace body is provided with a gasket, and an insulation groove is provided on one side of the gasket. Insulation filler is provided in the insulation groove. Part of the packing is attached to the gasket, and the other part is attached to the insulation filler.

[0007] Preferably, the insulating filler is sand.

[0008] Preferably, the cooling assembly includes a cooling pipe, a fan, and an exhaust pipe. The cooling pipe is coiled around the outer wall of the lower furnace body, and multiple sets of through pipes penetrating into the lower furnace body are provided on the cooling pipe. A fan is connected to the inlet of the cooling pipe. Multiple sets of exhaust pipes connecting the inside and outside are provided on the upper furnace body, and valves are provided on the exhaust pipes.

[0009] Preferably, the auxiliary components include mounting bases, positioning pins, and support rods. Multiple sets of mounting bases are provided on the outer wall of the lower furnace body, and positioning pins are provided on the mounting bases. Support rods are provided on the outer wall of the upper furnace body, and holes are provided on the support rods. The holes correspond to the positioning pins in position and are matched in size.

[0010] Preferably, the support rod is provided with an auxiliary component aligned with the hole. The auxiliary component is funnel-shaped, and the positioning pin is slidably connected to the auxiliary component.

[0011] In summary, the technical effects and advantages of this utility model are as follows:

[0012] This utility model describes a well-type furnace that achieves multi-layer labyrinthine insulation through a heat preservation mechanism. The insulation cotton and partitions on the bottom surface of the upper furnace body are tightly fitted with the gaskets on the top surface of the lower furnace body. The packing and gaskets inside the mounting components, along with the sand in the insulation grooves, work together to form a multi-layer sealed insulation structure. This greatly slows down the temperature loss, effectively improves the sealing and insulation performance of the furnace body, reduces heat loss, and enhances energy utilization efficiency. At the same time, it ensures the uniformity and stability of the temperature inside the furnace, providing a guarantee for high-quality heat treatment of the workpieces.

[0013] This invention simplifies and expedites the alignment of the upper and lower furnace bodies through the inclusion of auxiliary components. The positioning pins on the lower furnace body correspond in position and match in size to the holes on the support rods of the upper furnace body. Furthermore, the funnel-shaped auxiliary component on the support rods facilitates the quick passage of the positioning pins through the holes. Operators can accurately align the upper and lower furnace bodies without complex procedures, reducing operational difficulty, shortening alignment time, and improving work efficiency.

[0014] This invention utilizes a cooling component design to achieve rapid cooling of the furnace interior and the workpiece. A fan draws outside air into the lower furnace body through cooling pipes, and the opening of the furnace exhaust valve allows airflow to enter from the bottom and exit from the top, creating effective convective cooling. Compared to traditional natural cooling or inefficient cooling methods, this significantly shortens cooling time, accelerates processing cycles, improves production efficiency, and meets the demands for rapid cooling in actual production. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the split structure of this utility model;

[0018] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0019] Figure 4 For the present utility model Figure 3 A magnified structural diagram at point A in the diagram.

[0020] In the diagram: 1. Lower furnace body; 100. Mounting base; 2. Resistance band; 3. Cooling pipe; 4. Fan; 5. Gasket; 6. Insulation groove; 7. Positioning pin; 8. Upper furnace body; 9. Exhaust pipe; 10. Support rod; 11. Auxiliary parts; 12. Insulation cotton; 13. Partition plate; 14. Mounting parts; 15. Packing. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Reference Figure 1-4 The well-sealed furnace shown includes a lower furnace body 1 and an upper furnace body 8. The lower furnace body 1 and the upper furnace body 8 are detachably connected. The upper furnace body 8 can be removed by a lifting device, and the workpiece can be placed into the lower furnace body 1. Then, the upper furnace body 8 can be reconnected to the lower furnace body 1 by the lifting device again. The upper furnace body 8 and the lower furnace body 1 are aligned and calibrated by an auxiliary component. In order to avoid heat loss, a heat preservation mechanism is provided between the upper furnace body 8 and the lower furnace body 1. In order to facilitate rapid cooling after processing, a cooling component is provided on the lower furnace body 1.

[0023] As one embodiment of this invention, multiple sets of resistance bands 2 for heating are provided inside the lower furnace body 1.

[0024] As one implementation method in this embodiment, the cooling component consists of a cooling pipe 3 installed on the lower furnace body 1. The inlet end of the cooling pipe 3 is connected to the fan 4, and the outlet end of the cooling pipe 3 is sealed. A through pipe connecting to the interior is provided on the outer wall of the cooling pipe 3. By starting the fan 4, external gas is sent into the lower furnace body 1 through the cooling pipe 3. Then, by opening the valve of the exhaust pipe 9 on the upper furnace body 8, the airflow enters from the bottom and exits from the top, thereby achieving the effect of cooling the interior of the furnace body and the workpiece.

[0025] As one embodiment of this invention, the auxiliary components are as follows: two sets of symmetrical mounting seats 100 are provided on the outer wall of the lower furnace body 1, and a set of positioning pins 7 are provided on the top surface of the mounting seats 100. Support rods 10 corresponding to the positions of the mounting seats 100 are provided on the outer wall of the upper furnace body 8. The support rods 10 are provided with holes, and the holes are aligned with the positioning pins 7 in terms of position and size. In order to facilitate the alignment of the positioning pins 7 with the holes on the support rods 10, a funnel-shaped auxiliary component 11 is provided on the support rods 10 so that the positioning pins 7 can pass through the support rods 10.

[0026] As one embodiment of this invention, the insulation mechanism consists of: insulation cotton 12 and partition plate 13 on the bottom surface of the upper furnace body 8, with the insulation cotton 12 and partition plate 13 arranged in annular rings; mounting member 14 on the outer wall of partition plate 13, the mounting member 14 having a U-shaped cross-section; packing 15 inside the mounting member 14; a gasket 5 on the top surface of the lower furnace body 1; and an insulation groove 6 beside the gasket 5, containing sand. The packing 15, insulation cotton 12, and partition plate 13 are all in contact with the gasket 5, and part of the packing 15 is also in contact with the sand. Through the above structure, multi-layer insulation is achieved, forming a labyrinthine insulation, which slows down the loss of temperature.

[0027] The working principle of this practical system is as follows: The upper furnace body 8 is lifted using a lifting device, and then the workpiece is placed into the lower furnace body 1. After completing the above operation, the upper furnace body 8 is lifted back to the top of the lower furnace body 1 using the lifting device again. During this process, the hole at the end of the support rod 10 is aligned with the positioning pin 7 on the mounting base 100. Then, the upper furnace body 8 is slowly lowered. During this process, the funnel-shaped auxiliary component 11 assists in the correction so that the positioning pin passes through the hole on the support rod 10. After this operation is completed, the upper furnace body 8 moves down, and the insulation cotton 12 and the partition plate 13 on the bottom surface of the upper furnace body 8 are tightly attached to the gasket 5. When the upper furnace body 8 is attached to the lower furnace body 1, part of the packing 15 in the mounting component 14 is also pressed down on the gasket 5. The outer wall of the mounting component 14 is inserted into the sand in the insulation groove 6 (the remaining part of the packing 15 is attached to the sand). The above structure achieves labyrinth insulation to prevent rapid temperature loss. Then, the resistance band 2 in the lower furnace body 1 is started to heat the workpiece.

[0028] After heating is complete, start the fan 4. The fan 4 sends the gas into the furnace through the cooling pipe 3, and in the process, the exhaust pipe 9 is opened to achieve the cooling operation.

[0029] The electromechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments; they are common knowledge.

[0030] Components not described in detail in this article are existing technologies.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A well-sealed pit furnace, comprising a lower furnace body (1) and an upper furnace body (8), wherein the lower furnace body (1) and the upper furnace body (8) are slidably connected, characterized in that: The inner wall of the lower furnace body (1) is provided with a heating resistance strip (2), and a cooling component is provided on the outer wall of the lower furnace body (1). In order to assist the connection between the lower furnace body (1) and the upper furnace body (8), auxiliary components are provided on the lower furnace body (1) and the upper furnace body (8); a heat preservation mechanism is provided on the opposite surfaces of the lower furnace body (1) and the upper furnace body (8). The insulation mechanism also includes an insulation groove (6), insulation cotton (12), partition plate (13), mounting component (14), and packing (15). The bottom surface of the upper furnace body (8) is provided with insulation cotton (12), and an annular partition plate (13) is provided on one side of the insulation cotton (12). The outer wall of the partition plate (13) is provided with mounting component (14), and packing (15) is provided inside the mounting component (14). The top surface of the lower furnace body (1) is provided with a gasket (5), and an insulation groove (6) is provided on one side of the gasket (5). The insulation groove (6) is provided with insulation filler. Part of the packing (15) is attached to the gasket (5), and the other part is attached to the insulation filler.

2. A well-type furnace according to claim 1, characterized in that: The insulation filler is sand.

3. A well-type furnace according to claim 2, characterized in that: The cooling assembly includes a cooling pipe (3), a fan (4), and an exhaust pipe (9). The cooling pipe (3) is coiled around the outer wall of the lower furnace body (1), and the cooling pipe (3) is provided with multiple sets of through pipes that penetrate into the lower furnace body (1). The fan (4) is connected to the inlet of the cooling pipe (3). The upper furnace body (8) is provided with multiple sets of exhaust pipes (9) that connect the inside and outside. The exhaust pipe (9) is provided with a valve.

4. A well-type furnace according to claim 1, wherein: The auxiliary components include mounting bases (100), positioning pins (7), and support rods (10). Multiple sets of mounting bases (100) are provided on the outer wall of the lower furnace body (1). Positioning pins (7) are provided on the mounting bases (100). Support rods (10) are provided on the outer wall of the upper furnace body (8). The support rods (10) are provided with holes. The holes correspond to the positions of the positioning pins (7) and are matched in size.

5. A well-type furnace according to claim 4, characterized in that: The support rod (10) is provided with an auxiliary part (11) aligned with the hole. The auxiliary part (11) is funnel-shaped, and the positioning pin (7) is slidably connected to the auxiliary part (11).

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