A heating furnace

Abstract

This utility model discloses a heating furnace, including a furnace body with a hinged sealing door. The furnace body is fixedly connected to an array of fixed columns, with heat dissipation plates inserted into each column. Each fixed column has an annular groove, and a connecting sleeve is fitted onto it. The connecting sleeve has circumferentially spaced through holes, each containing a limiting bead that engages with the annular groove. A sliding sleeve is slidably connected to the outer side of the connecting sleeve, and an annular protrusion on its inner wall engages with the limiting bead. A spring is fixed between the sliding sleeve and the connecting sleeve. This utility model, through a unique limiting structure combined with the sliding sleeve and limiting bead, achieves rapid locking and releasing of the heat dissipation plate. The operator can easily disassemble or install the heat dissipation plate with simple rotation and pulling movements, simplifying maintenance and cleaning processes and saving time and labor costs.

Description

Technical Field

[0001] This utility model relates to the field of heating furnace technology, and more specifically, to a heating furnace. Background Technology

[0002] Heating furnaces, as a common heating device, are widely used in various heat treatment operations in laboratories, industrial workshops, and research institutions. The structural feature of this equipment is its sealed furnace chamber, with heating elements typically arranged on the outside of the chamber, indirectly heating the materials inside through thermal radiation.

[0003] The existing heating furnaces still have the following problems: Currently, most heating equipment casings are equipped with heat dissipation plates with filters. These plates easily attract dust and debris during use, requiring regular cleaning to maintain heat dissipation efficiency. However, existing heat dissipation plates are mostly installed on the equipment casing using screws. Disassembly and cleaning often require specialized tools, making the process cumbersome, time-consuming, and inefficient, especially in situations with limited on-site space. Furthermore, the connection between existing heat dissipation plates and the equipment casing generally uses a simple structure, resulting in generally low overall connection strength. Under prolonged operation and vibration, there is a risk of loosening or even detachment. This structural defect not only affects heat dissipation stability but may also lead to decreased equipment sealing or safety hazards due to component displacement, making it difficult to meet the reliability and durability requirements of industrial environments.

[0004] In view of this, we propose a heating furnace. Utility Model Content

[0005] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a heating furnace to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a heating furnace, comprising a heating furnace body, a sealing door hinged to the heating furnace body, fixed columns arranged in an array on the heating furnace body, a heat dissipation plate inserted into the fixed columns, an annular groove provided on the fixed columns, a connecting sleeve sleeved on the fixed columns, the connecting sleeve having circumferentially equally spaced through holes, a limiting bead provided in the through holes, the limiting bead engaging with the annular groove, a sliding sleeve slidably connected to the outer side of the connecting sleeve, an annular protrusion provided on the inner wall of the sliding sleeve, the annular protrusion engaging with the limiting bead, a spring fixedly connected between the sliding sleeve and the connecting sleeve, and the sliding sleeve having a limiting structure.

[0007] The present invention is further configured such that the connecting sleeve is fixedly connected to a connecting ring, the connecting ring is fixedly connected to a fixed seat, the fixed seat is slidably connected to a sliding rod, and the sliding rod is fixedly connected to a fixed block.

[0008] The present invention is further configured such that the fixing block is fixedly connected to a compression ring, and the central axis of the compression ring coincides with the central axis of the connecting ring.

[0009] The present invention is further configured such that a second spring is fixedly connected between the connecting ring and the compression ring.

[0010] The present invention is further configured such that the limiting structure includes a support ring, the support ring is fixedly connected to the outside of the sliding sleeve, and the sliding sleeve is rotatably connected to a rotating ring.

[0011] The present invention is further configured such that a torsion spring is fixedly connected between the rotating ring and the supporting ring.

[0012] The present invention is further provided that the rotating ring is provided with grooves that are symmetrically distributed.

[0013] The present invention is further configured such that the connecting ring is fixedly connected to two limiting hooks, and the limiting hooks cooperate with the rotating ring for limiting.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides a heating furnace with the following advantages: 1. This utility model achieves rapid locking and releasing of the heat sink through a unique limiting structure combined with a sliding sleeve and limiting beads. Operators can complete disassembly or installation with simple rotation and pulling actions, simplifying the maintenance and cleaning process and saving time and labor costs.

[0015] 2. This utility model uses a spring to continuously provide elastic force, which, through the compression ring, tightly presses the heat dissipation plate against the furnace body, ensuring the connection rigidity and stability of the heat dissipation plate during operation and reducing loosening caused by vibration. At the same time, the cooperation between the limit hook and the rotating ring forms a mechanical lock, reducing the probability of the sliding sleeve coming off due to accidental disturbance during equipment operation.

[0016] 3. This utility model not only makes daily cleaning of the heat dissipation plate itself more thorough and convenient, but also facilitates the inspection, maintenance or replacement of these locking functional components, thereby extending the service life of the entire heating furnace system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front structure of a heating furnace according to the present invention; Figure 2 This is a schematic diagram of the structure of the heat sink and the connecting sleeve in this utility model; Figure 3 This is a schematic diagram of the structure of the fixed column and the sliding sleeve in this utility model; Figure 4 This is a cross-sectional view of the fixing column and connecting sleeve in this utility model; Figure 5 This is a schematic diagram of the connecting ring and the extrusion ring in this utility model; Figure 6 This is a schematic diagram of the structure of the support ring and the rotating ring in this utility model.

[0018] In the diagram: 1. Heating furnace body; 2. Sealing door; 3. Fixed column; 4. Heat dissipation plate; 5. Annular groove; 6. Connecting sleeve; 7. Through hole; 8. Limiting bead; 9. Sliding sleeve; 10. Spring 1; 11. Connecting ring; 12. Fixed seat; 13. Sliding rod; 14. Fixed block; 15. Compression ring; 16. Spring 2; 17. Support ring; 18. Rotating ring; 19. Torsion spring; 20. Groove; 21. Limiting hook. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0022] Please see Figures 1-6A heating furnace includes a furnace body 1, a sealing door 2 hinged to the furnace body 1, and fixed columns 3 arranged in an array on the furnace body 1. Heat dissipation plates 4 are inserted into the fixed columns 3, and an annular groove 5 is provided on each fixed column 3. A connecting sleeve 6 is fitted onto each fixed column 3, and the connecting sleeve 6 has circumferentially spaced through holes 7. Limiting beads 8 are provided within the through holes 7, and the limiting beads 8 engage with the annular groove 5 for limiting. A sliding sleeve 9 is slidably connected to the outer side of the connecting sleeve 6, and an annular protrusion is provided on the inner wall of the sliding sleeve 9. The annular protrusion of 9 is pressed and engaged with the limiting bead 8. A spring 10 is fixed between the sliding sleeve 9 and the connecting sleeve 6. The sliding sleeve 9 is provided with a limiting structure. The connecting sleeve 6 is fixed with a connecting ring 11. The connecting ring 11 is fixed with a fixed seat 12. The fixed seat 12 is slidably connected with a sliding rod 13. The sliding rod 13 is fixed with a fixed block 14. The fixed block 14 is fixed with a pressing ring 15. The central axis of the pressing ring 15 coincides with the central axis of the connecting ring 11. A spring 16 is fixed between the connecting ring 11 and the pressing ring 15.

[0023] Please see Figure 5 and Figure 6 The limiting structure includes a support ring 17, which is fixed to the outside of the sliding sleeve 9. The sliding sleeve 9 is rotatably connected to a rotating ring 18, and a torsion spring 19 is fixed between the rotating ring 18 and the support ring 17. The rotating ring 18 is provided with symmetrically distributed grooves 20. The connecting ring 11 is fixed with two limiting hooks 21, which are limited to the rotating ring 18.

[0024] The working principle of this utility model is as follows: When it is necessary to disassemble and clean the heat sink 4, the specific disassembly steps are as follows: Rotating the rotating ring 18 counterclockwise, when the two grooves 20 rotate to a horizontal position, the torsion spring 19 is tightened, and the limiting hook 21 loses its limiting position on the rotating ring 18. Then, pulling the rotating ring 18 outward causes the sliding sleeve 9 to slide outward. The annular protrusion of the sliding sleeve 9 no longer presses against the limiting bead 8, and at the same time, the spring 10 is compressed. When the limiting bead 8 moves out of the annular groove 5, it no longer limits the fixed post 3. Then, the connecting sleeve 6 is removed from the height post. The connecting sleeve 6 drives the connecting ring 11 to move. Under the action of the spring force, the distance between the connecting ring 11 and the compression ring 15 increases, and the sliding rod 13 slides along the fixed seat 12. When the rotating ring 18 is released, the limiting hook 21 limits the rotating ring 18 again. Then, the heat sink 4 is removed from the four fixed posts 3.

[0025] When it is necessary to reinstall the heat sink 4 onto the furnace body 1, first insert the heat sink 4 into the four fixed posts 3, then hold the sliding sleeve 9 and rotate the rotating ring 18 so that the rotating ring 18 loses its limit with the limit hook 21, then pull the sliding sleeve 9 outward so that the connecting sleeve 6 is inserted into the fixed post 3, and the fixed post 3 is made to cooperate with the connecting sleeve 6 again through the limit bead 8.

[0026] When the fixed post 3 is inserted into the connecting sleeve 6, the compression ring 15 first contacts the heat sink 4. Then, as the connecting sleeve 6 approaches the heat sink 4, the second spring 16 is gradually compressed until the fixed post 3 is connected to the connecting sleeve 6. Through the elastic force of the second spring 16, the compression ring 15 compresses the heat sink 4, ensuring the connection strength between the heat sink 4 and the heating furnace body 1. Furthermore, the limiting hook 21 and the rotating ring 18 limit the movement, reducing the risk of the sliding sleeve 9 accidentally falling off.

[0027] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heating furnace, comprising a heating furnace body (1), characterized in that: The heating furnace body (1) is hinged with a sealing door (2). The heating furnace body (1) is fixedly connected with fixed columns (3) arranged in an array. A heat dissipation plate (4) is inserted into the fixed column (3). An annular groove (5) is provided on the fixed column (3). A connecting sleeve (6) is sleeved on the fixed column (3). The connecting sleeve (6) is provided with through holes (7) with equal spacing in the circumference. A limiting bead (8) is provided in the through hole (7). The limiting bead (8) is in a limiting fit with the annular groove (5). A sliding sleeve (9) is slidably connected to the outside of the connecting sleeve (6). An annular protrusion is provided on the inner wall of the sliding sleeve (9). The annular protrusion of the sliding sleeve (9) is in a pressing fit with the limiting bead (8). A spring (10) is fixedly connected between the sliding sleeve (9) and the connecting sleeve (6). The sliding sleeve (9) is provided with a limiting structure.

2. The heating furnace according to claim 1, characterized in that: The connecting sleeve (6) is fixedly connected to a connecting ring (11), the connecting ring (11) is fixedly connected to a fixing seat (12), the fixing seat (12) is slidably connected to a sliding rod (13), and the sliding rod (13) is fixedly connected to a fixing block (14).

3. A heating furnace according to claim 2, characterized in that: The fixing block (14) is fixedly connected to a compression ring (15), and the central axis of the compression ring (15) coincides with the central axis of the connecting ring (11).

4. A heating furnace according to claim 3, characterized in that: A second spring (16) is fixed between the connecting ring (11) and the compression ring (15).

5. A heating furnace according to claim 4, characterized in that: The limiting structure includes a support ring (17), which is fixed to the outside of the sliding sleeve (9), and the sliding sleeve (9) is rotatably connected to a rotating ring (18).

6. A heating furnace according to claim 5, characterized in that: A torsion spring (19) is fixed between the rotating ring (18) and the supporting ring (17).

7. A heating furnace according to claim 6, characterized in that: The rotating ring (18) is provided with symmetrically distributed grooves (20).

8. A heating furnace according to claim 7, characterized in that: The connecting ring (11) is fixed with two limiting hooks (21), and the limiting hooks (21) are in a limiting cooperation with the rotating ring (18).

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