Heat treatment hearth and heat treatment equipment

Abstract

The utility model discloses a heat treatment hearth and heat treatment equipment, the heat treatment hearth extends in the axial direction, the heat treatment hearth comprises a hearth assembly and a connecting assembly, the hearth assembly is basically cylindrical, the hearth assembly is formed by splicing two semi-cylindrical hearth parts, and clamping protrusions are arranged at the two ends of the hearth assembly in the axial direction; the connecting assembly is basically in a circular ring shape, the connecting assembly is formed by splicing two semi-circular-ring-shaped connecting pieces, the connecting assembly is installed between the adjacent hearth assemblies or installed at the ends of the hearth assemblies, and at least one end, in the axial direction, of the connecting assembly is provided with a clamping groove matched with the clamping protrusion. According to the heat treatment hearth and the heat treatment equipment, the temperature leakage phenomenon of the hearth can be reduced, the heat preservation time is prolonged, and temperature rise in the hearth is more uniform and rapid.

Description

Technical Field

[0001] This application relates to the field of heat treatment furnace technology, and in particular to a heat treatment furnace chamber and heat treatment equipment. Background Technology

[0002] The existing furnace lining uses bolts to connect components, resulting in joint surfaces between furnace parts. Under high-temperature conditions, the furnace material is prone to slight deformation due to thermal expansion, making it difficult to maintain a tight seal at the joints. This creates channels for heat conduction or radiation, leading to heat loss and furnace temperature leakage. Furthermore, prolonged high-temperature operation may cause the gaps at the joints to widen further, allowing high temperatures to escape and exacerbating the furnace temperature leakage problem. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this application is to provide a heat treatment furnace and heat treatment equipment that can reduce heat leakage in the furnace and extend the heat treatment time.

[0004] Based on the above objectives, in a first aspect, this application provides a heat treatment furnace, which extends axially and includes a furnace assembly and a connecting assembly. The furnace assembly is generally cylindrical and is formed by splicing two semi-cylindrical furnace parts. The furnace assembly has snap-fit ​​protrusions at both ends in the axial direction. The connecting assembly is generally annular and is formed by splicing two semi-annular connecting parts. The connecting assembly is installed between adjacent furnace assemblies or at the end of the furnace assembly. At least one end of the connecting assembly in the axial direction has a snap-fit ​​groove that engages with the snap-fit ​​protrusion.

[0005] Furthermore, the ratio of the radial thickness of the furnace assembly to the radial thickness of the connecting assembly ranges from 0.6 to 0.9; in the furnace assembly, the ratio of the axial length of the snap-fit ​​protrusion to the axial length of the furnace assembly ranges from 0.015 to 0.025.

[0006] Furthermore, the furnace component includes a first end face and a second end face in the radial direction. The first end face is provided with at least one radially protruding end face protrusion that extends axially. The second end face is provided with at least one radially recessed end face groove that extends axially. The end face protrusion on the first end face of one furnace component is fitted to the end face groove on the second end face of another furnace component.

[0007] Furthermore, the ratio of the height of the end face protrusion to the radial thickness of the furnace component ranges from 0.1 to 0.15.

[0008] Furthermore, the connector includes a first connecting surface and a second connecting surface in the radial direction. The first connecting surface is provided with at least one radially protruding connecting protrusion that extends axially. The second connecting surface is provided with at least one radially recessed connecting groove that extends axially. The connecting protrusion on the first connecting surface of one connector is engaged with the connecting groove on the second connecting surface of another connector.

[0009] Furthermore, the ratio of the height of the connecting protrusion to the radial thickness of the connector ranges from 0.075 to 0.115.

[0010] Furthermore, the furnace assembly includes a first furnace component and a second furnace component that are interlocked with each other, and the connecting assembly includes a first connector and a second connector that are interlocked with each other; a first plane is defined, with the first furnace component located on one side of the first plane and the second furnace component located on the other side of the first plane; a second plane is defined, with the first connector located on one side of the second plane and the second connector located on the other side of the second plane; the included angle between the first plane and the second plane is equal to 0° and less than or equal to 90°.

[0011] Furthermore, the heat treatment furnace includes three furnace assemblies and four connecting assemblies, with two connecting assemblies connected between adjacent furnace assemblies and two connecting assemblies located at both ends of the heat treatment furnace.

[0012] Furthermore, the heat treatment furnace also includes heating elements, with a plurality of heating elements evenly arranged inside the furnace assembly. The heating elements extend along the axial direction inside the furnace assembly, and the heating elements are heating wires or heating rods.

[0013] Secondly, this application also provides a heat treatment apparatus, which includes a shell and a heat treatment furnace as described above, with the heating furnace installed inside the shell.

[0014] In summary, the heat treatment furnace and heat treatment equipment provided in this application have concave and convex structures on the furnace assembly and connecting assembly. The insertion is completed by the snap-fit ​​groove of the connecting assembly and the snap-fit ​​protrusion of the furnace assembly, which effectively reduces the leakage of heat from the joint in the furnace and extends the heat preservation time of the furnace. Furthermore, the modular design of the furnace assembly and connecting assembly facilitates the processing and assembly of the heat treatment furnace, simplifies the production process, and reduces the manufacturing cost of the heat treatment furnace. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the heat treatment furnace provided in this application;

[0016] Figure 2 This is a schematic diagram of the furnace assembly in the heat treatment furnace provided in this application;

[0017] Figure 3This is a schematic diagram of the connecting components in the heat treatment furnace according to the present application;

[0018] Figure 4 Provided in accordance with this application Figure 1 Enlarged view of point A in the middle;

[0019] Figure 5 Provided in accordance with this application Figure 1 Enlarged view of point B in the middle;

[0020] Figure 6 This is a schematic diagram of the furnace components in the heat treatment furnace provided in this application;

[0021] Figure 7 This is a schematic diagram of the connecting parts in the heat treatment furnace according to the present application;

[0022] Figure 8 This is a schematic diagram showing the positional relationship between the furnace assembly and the connecting assembly in the heat treatment furnace according to the present application;

[0023] Figure 9 This is a schematic diagram of a heat treatment furnace consisting of three furnace chamber assemblies and four connecting assemblies, according to the present application.

[0024] In the figure: 100, heat treatment furnace chamber; 11, furnace chamber assembly; 111, snap-fit ​​protrusion; 112, furnace chamber component; 1121, first end face; 1121a, end face protrusion; 1122, second end face; 1122a, end face groove; 113, first furnace chamber component; 114, second furnace chamber component; 12, connecting assembly; 121, snap-fit ​​groove; 122, connector; 1221, first connecting surface; 1221a, connecting protrusion; 1222, second connecting surface; 1222a, connecting groove; 123, first connecting surface; 124, second connecting surface; 101, first plane; 102, second plane. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0026] like Figure 1As shown, in a first aspect, this application provides a heat treatment furnace 100, which extends along an axial direction. For ease of explanation, the following description is given from a perspective where the axis is parallel to the horizontal direction. The heat treatment furnace 100 includes a furnace assembly 11 and a connecting assembly 12, which are assembled by splicing the furnace assembly 11 and the connecting assembly 12 along an axial direction. The connecting assembly 12 is installed between adjacent furnace assemblies 11 or at the end of a furnace assembly 11, and is used to connect adjacent furnace assemblies 11 and to protect the end of the heat treatment furnace 100.

[0027] like Figure 2 As shown, in the heat treatment furnace 100 of this application, the furnace assembly 11 is basically cylindrical, and the furnace assembly 11 is composed of two semi-cylindrical furnace parts 112 spliced ​​together, with the two furnace parts 112 arranged basically symmetrically. Figure 3 As shown, the connecting component 12 is basically circular in shape. The connecting component 12 is composed of two semi-circular connecting parts 122 spliced ​​together, and the two connecting parts 122 are also basically symmetrically arranged.

[0028] The furnace assembly 11 has snap-fit ​​protrusions 111 at both ends in the axial direction, and the connecting assembly 12 has a snap-fit ​​groove 121 at at least one end in the axial direction that fits into the snap-fit ​​protrusions 111. The size of the snap-fit ​​groove 121 is precisely matched with the size of the snap-fit ​​protrusions 111 of the furnace assembly 11, forming a tight fit. The furnace assembly 11 is spliced ​​with the connecting assembly 12 through the snap-fit ​​protrusions 111 at both ends, thereby splicing the furnace assembly 11 and the connecting assembly 12 to form a heat treatment furnace 100. The concave-convex structure design of the snap-fit ​​groove 121 and the snap-fit ​​protrusions 111 forms a stepped structure, which extends the temperature loss channel and increases the difficulty of temperature loss, effectively reducing the leakage of heat from the joints in the heat treatment furnace 100, reducing heat leakage, and extending the heat preservation time of the heat treatment furnace 100.

[0029] Based on the above description, the heat treatment furnace 100 provided in this application has a concave-convex structure on the furnace assembly 11 and the connecting assembly 12. The connecting assembly 12's snap-fit ​​groove 121 and the furnace assembly 11's snap-fit ​​protrusion 111 form an interlocking connection, effectively reducing heat leakage from the joints within the heat treatment furnace 100. Simultaneously, the modular design of the furnace assembly 11 and the connecting assembly 12 facilitates the processing and assembly of the heat treatment furnace 100, simplifies the production process, and reduces the manufacturing cost of the heat treatment furnace 100.

[0030] As one implementation method, such as Figure 4As shown, the ratio of the radial thickness L1 of the furnace assembly 11 to the radial thickness L2 of the connecting assembly 12 ranges from 0.6 to 0.9. The connecting assembly 12 is larger than the furnace assembly 11 to ensure a stable connection between the two furnace assemblies 12. The furnace assembly 11 bears the high temperature and workpiece load within the furnace. The ratio of the radial thickness L1 of the furnace assembly 11 to the radial thickness L2 of the connecting assembly 12 within the above range balances the requirements for furnace structural strength and lightweight design, improves the pressure-bearing capacity of the furnace assembly 11, and prevents deformation of the furnace assembly 11 due to high-temperature softening or mechanical stress.

[0031] As one implementation method, such as Figure 5 As shown, in the furnace assembly 11, the ratio of the axial length L3 of the snap-fit ​​protrusion 111 to the axial length L4 of the furnace assembly 11 ranges from 0.015 to 0.025. The snap-fit ​​protrusion 111 of the furnace assembly 11 fits tightly with the snap-fit ​​groove 121 of the connecting assembly 12. The ratio of the axial length L3 of the snap-fit ​​protrusion 111 to the axial length L4 of the furnace assembly 11 is within the above range, which avoids loosening of the connection between the furnace assembly 11 and the connecting assembly 12 due to the size ratio of the snap-fit ​​protrusion 111 being too small, and avoids increased assembly difficulty and production costs due to the size ratio of the snap-fit ​​protrusion 111 being too large.

[0032] As one implementation method, such as Figure 6 As shown, the furnace chamber component 112 includes a first end face 1121 and a second end face 1122 in the radial direction. The first end face 1121 of one furnace chamber component 112 is engaged with the second end face 1122 of another furnace chamber component 112, and the second end face 1122 of one furnace chamber component 112 is engaged with the first end face 1121 of another furnace chamber component 112, so that the two furnace chamber components 112 are spliced ​​together to obtain the furnace assembly 11.

[0033] like Figure 6As shown, the first end face 1121 of the furnace component 112 is provided with at least one radially protruding end face protrusion 1121a, which extends along the axial direction to form an elongated protrusion; the second end face 1122 of the furnace component 112 is provided with at least one radially recessed end face groove 1122a, which extends along the axial direction to form an elongated groove. An end face protrusion 1121a on the first end face 1121 of one furnace component 112 fits into an end face groove 1122a on the second end face 1122 of another furnace component 112. Similarly, the end face groove 1122a on the second end face 1122 of one furnace component 112 fits into an end face protrusion 1121a on the first end face 1121 of another furnace component 112. Through this end face protrusion-contour structure alignment and splicing, the end face protrusion 1121a of one furnace component 112 is embedded into the end face groove 1122a of another furnace component 112, thus splicing to obtain the furnace assembly 11. The tight fit of the end face protrusion-contour structure reduces the gap at the joint of the furnace components 112, effectively reducing heat leakage within the furnace. Furthermore, the end face protrusion 1121a and the end face groove 1122a extend along the full length of the furnace axis, ensuring the continuity of the joint surface of the protrusion-contour structure, avoiding localized stress concentration, and further reducing heat leakage within the furnace. Optionally, a plurality of end face protrusions 1121a and corresponding end face grooves 1122a may be provided on the first end face 1121 and the second end face 1122 to further reduce heat leakage.

[0034] As one implementation method, the ratio of the height L5 of the end face protrusion 1121a to the radial thickness L6 of the furnace component 112 is in the range of 0.1 to 0.15. This avoids insufficient contact area between the end face protrusion 1121a and the end face groove 1122a due to the end face protrusion 1121a being too low, which would lead to furnace sealing failure and heat leakage. It also avoids the end face protrusion 1121a being too high and occupying too much radial space, which would weaken the overall pressure-bearing capacity of the furnace wall.

[0035] As one implementation method, such as Figure 7 As shown, the connector 122 includes a first connecting surface 1221 and a second connecting surface 1222 in the radial direction. The first connecting surface 1221 of one connector 122 engages with the second connecting surface 1222 of another connector 122, and the second connecting surface 1222 of one connector 122 engages with the first connecting surface 1221 of another connector 122, thereby splicing the two connectors 122 to obtain the connecting assembly 12.

[0036] like Figure 7As shown, the first connecting surface 1221 of the connector 122 is provided with at least one radially protruding connecting protrusion 1221a, which extends along the axial direction to form an elongated protrusion; the second connecting surface 1222 of the connector 122 is provided with at least one radially recessed connecting groove 1222a, which extends along the axial direction to form an elongated groove. A connecting protrusion 1221a on the first connecting surface 1221 of one connector 122 is fitted to a connecting groove 1222a on the second connecting surface 1222 of another connector 122. The connecting groove 1222a on the second connecting surface 1222 of one connector 122 is fitted to a connecting protrusion 1221a on the first connecting surface 1221 of another connector 122. Through the alignment and splicing of the concave and convex structure of the connecting surfaces, the connecting protrusion 1221a of one connector 122 is embedded into the connecting groove 1222a of another connector 122, and the splicing is to obtain the connecting assembly 12.

[0037] The tight fit of the concave and convex structures on the connecting surface reduces the gap at the joint of the connector 122, effectively reducing heat leakage inside the furnace. Furthermore, the connecting protrusion 1221a and the connecting groove 1222a extend along the entire length of the furnace axis, ensuring the continuity of the joint surface, avoiding localized stress concentration, and further reducing heat leakage inside the furnace. Optionally, a plurality of connecting protrusions 1221a and corresponding connecting grooves 1222a can be provided on the first connecting surface 1221 and the second connecting surface 1222 to further reduce heat leakage.

[0038] As one implementation method, the ratio of the height L7 of the connecting protrusion 1221a to the radial thickness L8 of the connector 122 is in the range of 0.075 to 0.115. This avoids insufficient contact area between the connecting protrusion 1221a and the connecting groove 1222a due to the height of the connecting protrusion 1221a being too low, which would lead to furnace sealing failure and heat leakage. It also avoids the connecting protrusion 1221a being too high and occupying too much radial space, which would weaken the overall pressure-bearing capacity of the furnace wall.

[0039] As one implementation method, such as Figure 8As shown, the furnace assembly 11 includes a first furnace component 113 and a second furnace component 114 that are interlocked with each other, and the connecting assembly 12 includes a first connector 123 and a second connector 124 that are interlocked with each other; a first plane 101 is defined, with the first furnace component 113 located on one side of the first plane 101 and the second furnace component 114 located on the other side of the first plane 101; a second plane 102 is defined, with the first connector 123 located on one side of the second plane 102 and the second connector 124 located on the other side of the second plane 102; the included angle α between the first plane 101 and the second plane 102 is equal to 0° and less than or equal to 90°.

[0040] Understandably, the first plane 101 is essentially the mating surface between the first furnace component 113 and the second furnace component 114 in the furnace assembly 11, and the second plane 102 is essentially the mating surface between the first connector 123 and the second connector 124 in the connecting assembly 12. The included angle α between the first plane 101 and the second plane 102 can be equal to 0°, that is, the mating surfaces of the two furnace components 112 and the mating surfaces of the two connectors 122 are on the same plane, which facilitates the assembly of the heat treatment furnace 100; the included angle α between the first plane 101 and the second plane 102 can be greater than 0° and less than or equal to 90°, that is, there is a certain included angle between the mating surfaces of the two furnace components 112 and the mating surfaces of the two connectors 122, thereby staggering the joints of the furnace assembly 11 and the connecting assembly 12, further reducing heat loss in the furnace, and also improving the connection strength of the entire heat treatment furnace 100.

[0041] As one implementation method, such as Figure 9 As shown, the heat treatment furnace 100 also includes heating elements 13. A plurality of heating elements 13 are evenly arranged inside the furnace assembly 11, extending along an axial direction within the furnace assembly 11. Specifically, the heating elements are arranged along an axial direction inside the furnace assembly. The axially extending heating elements 13 achieve linear temperature control within the furnace, enabling rapid temperature rise and shortening production time. The uniform distribution of the heating elements 13 avoids the localized overheating or temperature gradient problems caused by traditional single-point heating, resulting in a uniform temperature distribution within the furnace.

[0042] As one implementation method, the heating element 13 can be configured as a heating wire or a heating rod to meet the needs of various working conditions. The heating wire can be arranged in a matrix within a limited space, and the uniformity of the temperature field can be improved by increasing the density of the heating wire. The heating rod has high power, which can reduce the number of heating elements and improve the manufacturing convenience of the heat treatment furnace 100. Furthermore, in large heat treatment furnaces, heating wires can be configured in working areas requiring precise temperature control, while heating rods can be used in basic heating areas, achieving a balance between thermal efficiency and temperature uniformity through differentiated configuration, depending on the characteristics of the temperature zone or structural parts. Alternatively, some heating rods can be set in the furnace, and then heating wires can be placed between adjacent heating rods to improve the uniformity of the temperature field.

[0043] In one implementation, the heat treatment furnace 100 includes at least two furnace assemblies 11 and at least three connecting assemblies 12. Two connecting assemblies 12 are disposed at both ends of the heat treatment furnace 100, and the remaining connecting assemblies 12 are connected between adjacent furnace assemblies 11. In the heat treatment furnace of this application, heat treatment furnaces of different specifications can be obtained by setting the number of furnace assemblies and corresponding connecting assemblies, and the length of the heat treatment furnace can be increased by increasing the number of furnace assemblies and corresponding connecting assemblies. Figure 9 As shown, the heat treatment furnace 100 includes three furnace assemblies 11 and four connecting assemblies 12. Two connecting assemblies 12 are connected between adjacent furnace assemblies 11. Each connecting assembly 12 between adjacent furnace assemblies 11 has a snap-fit ​​groove 121 on both sides. Adjacent furnace assemblies 11 are connected by the connecting assemblies 12, thus forming a continuous main structure of the heat treatment furnace 100. A connecting assembly 12 is provided at each end of the heat treatment furnace 100. The connecting assemblies 12 at both ends of the heat treatment furnace 100 only have a snap-fit ​​groove 121 on the side connected to the furnace assembly 11. It can be understood that, according to actual production needs, additional connecting assemblies 12 can be added... Figure 9 Based on the heat treatment furnace 100 shown, a suitable length of heat treatment furnace 100 is obtained by adding an appropriate number of furnace assemblies 11 and connecting assemblies 12. The modular design of furnace assemblies 11 and connecting assemblies 12 simplifies the assembly process, and the total length of heat treatment furnace 100 can be quickly adjusted by increasing or decreasing the number of furnace assemblies 11 and connecting assemblies 12, thereby adapting to different scales of production needs.

[0044] According to the above description, the heat treatment furnace 100 provided in this application has a concave-convex structure on the furnace assembly 11 and the connecting assembly 12. The insertion is completed by the snap-fit ​​protrusion 111 on the furnace assembly 11 and the snap-fit ​​groove 121 on the connecting assembly 12, which effectively reduces the leakage of heat from the joint in the furnace and extends the heat holding time of the heat treatment furnace 100. In addition, the heating element 13 is provided to extend along the axial direction in the furnace assembly 11, so that the temperature distribution in the furnace is uniform and the heating in the furnace is faster, reducing the production time. Furthermore, the modular design of the furnace assembly 11 and the connecting assembly 12 facilitates the processing and assembly of the heat treatment furnace 100, simplifies the production process, and reduces the manufacturing cost of the heat treatment furnace 100.

[0045] Secondly, this application also provides a heat treatment apparatus, which includes a shell and a heat treatment furnace 100 as described above, with the heating furnace installed inside the shell. This heat treatment apparatus can reduce heat leakage in the furnace, extend the holding time, and make the heating inside the furnace more uniform and rapid.

[0046] Finally, it should be noted that the above are only some preferred embodiments of this application and are not intended to limit this application. Although this application 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 this application should be included within the protection scope of this application.

Claims

1. A heat treatment furnace chamber extending in an axial direction, characterized by, The heat treatment furnace includes: The furnace assembly is basically cylindrical and is composed of two semi-cylindrical furnace parts joined together. The furnace assembly has snap-fit ​​protrusions at both ends in the axial direction. The connecting assembly is basically circular in shape. The connecting assembly is composed of two semi-circular connecting parts spliced ​​together. The connecting assembly is installed between adjacent furnace assemblies or at the end of the furnace assembly. At least one end of the connecting assembly in the axial direction is provided with a snap-fit ​​groove that fits into the snap-fit ​​protrusion.

2. The heat treatment furnace according to claim 1, characterized in that... The ratio of the radial thickness of the furnace assembly to the radial thickness of the connecting assembly ranges from 0.6 to 0.

9. In the furnace assembly, the ratio of the axial length of the snap-fit ​​protrusion to the axial length of the furnace assembly ranges from 0.015 to 0.

025.

3. The heat treatment furnace according to claim 1, characterized in that... The furnace component has a first end face and a second end face at both ends in the radial direction. The first end face is provided with at least one end face protrusion that extends axially. The second end face is provided with at least one end face groove that extends axially. The end face protrusion on the first end face of one furnace component is engaged with the end face groove on the second end face of another furnace component.

4. The heat treatment furnace according to claim 3, characterized in that... The ratio of the height of the end face protrusion to the radial thickness of the furnace component ranges from 0.1 to 0.

15.

5. The heat treatment furnace according to claim 1, characterized in that... The connector has a first connecting surface and a second connecting surface at both ends in the radial direction. The first connecting surface has at least one connecting protrusion that extends axially, and the second connecting surface has at least one connecting groove that extends axially. The connecting protrusion on the first connecting surface of one connector is engaged with the connecting groove on the second connecting surface of the other connector.

6. The heat treatment furnace according to claim 5, characterized in that... The ratio of the height of the connecting protrusion to the radial thickness of the connector ranges from 0.075 to 0.

115.

7. The heat treatment furnace according to claim 6, characterized in that... The furnace assembly includes a first furnace component and a second furnace component that are interlocked with each other. The connecting assembly includes a first connector and a second connector that are interlocked with each other. A first plane is defined, with the first furnace component located on one side of the first plane and the second furnace component located on the other side of the first plane. A second plane is defined, with the first connector located on one side of the second plane and the second connector located on the other side of the second plane. The included angle between the first plane and the second plane is equal to 0° and less than or equal to 90°.

8. The heat treatment furnace according to claim 1, characterized in that... The heat treatment furnace includes at least two furnace assemblies and at least three connecting assemblies. Two of the connecting assemblies are disposed at both ends of the heat treatment furnace, and the remaining connecting assemblies are connected between adjacent furnace assemblies.

9. The heat treatment furnace according to claim 1, characterized in that... The heat treatment furnace also includes heating elements, a plurality of which are evenly arranged inside the furnace assembly. The heating elements extend axially within the furnace assembly and are heating wires or heating rods.

10. A heat treatment apparatus, characterized in that: The heat treatment equipment includes a housing and a heat treatment furnace as described in any one of claims 1 to 9, wherein the heat treatment furnace is installed inside the housing.

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