A mesh belt tempering furnace with uniform heating

Abstract

The present application relates to a mesh belt tempering furnace with uniform heating, which inserts a heater in a vertical direction on the top of the furnace so that the heater can directly extend into the heat treatment space of the furnace, so that the heat generated by the heater can be directly released in the heat treatment space, and then cooperates with a hot air circulation component to make the hot air flow, thereby improving the heating efficiency in the heat treatment space and making the temperature in the heat treatment space more uniform. In addition, since it is installed on the top of the furnace by plugging, it is convenient to check and repair the heater, effectively reducing the maintenance cost.

Description

Technical Field

[0001] The utility model relates to a uniformly heated mesh belt type tempering furnace, belonging to the technical field of heat treatment equipment. Background Art

[0002] Mesh belt tempering furnace is a kind of equipment used for heat treatment of metal materials. It is mainly used to remove the residual stress generated by the material after quenching, and appropriately reduce the hardness of the material, improve its toughness and ductility. It can accurately control the temperature during heating and insulation to ensure that the metal material reaches the required tempering temperature range, so as to be able to process large quantities of metal workpieces.

[0003] However, the heating components of the existing mesh belt tempering furnace are usually installed on the top and bottom of the furnace, and are fixed inside the furnace wall. The heat generated by the heating components needs to be conducted through the furnace wall to the heat treatment space in the furnace, so that the air in the heat treatment space is heated to a specified temperature. In this setting, the heat needs to be conducted through the furnace wall, resulting in slow heating, and due to the influence of the heat conduction efficiency of the furnace wall, it is easy to cause uneven temperature in the furnace. In addition, if the heating component is damaged, it is difficult and costly to repair and replace it. Utility Model Content

[0004] The utility model aims to provide a mesh belt tempering furnace with uniform heating, which can directly release heat in the furnace, heats up quickly and more evenly, and is also convenient for repairing and replacing heating components.

[0005] In order to achieve the above object, the utility model provides the following technical solution: a uniformly heated mesh belt tempering furnace, the mesh belt tempering furnace comprising:

[0006] A furnace chamber, wherein a heat treatment space is formed inside;

[0007] A mesh belt conveyor line is arranged in the heat treatment space along the longitudinal rectangle of the furnace;

[0008] A hot air circulation component is arranged on the top of the furnace and is partially located in the heat treatment space to drive the hot air in the heat treatment space to flow;

[0009] The heating assembly includes heater groups symmetrically arranged on both sides of the hot air circulation assembly, each heater group includes a plurality of heaters arranged at intervals, the heaters are vertically plugged into the furnace and partially extend into the heat treatment space.

[0010] Furthermore, the heater includes a connection part connected to a power source, a heating part for generating heat energy, and a heat insulating part connected between the connection part and the heating part, and the length of the heat insulating part is equal to the wall thickness of the furnace.

[0011] Furthermore, a connecting flange fixedly connected to the connecting portion is provided on the top of the furnace, and the connecting portion is sealedly connected to the connecting flange.

[0012] Furthermore, the heating portion includes at least two U-shaped heating bodies, and the angles between the planes where two adjacent U-shaped heating bodies are located are equal.

[0013] Furthermore, the heating parts are distributed at intervals along the longitudinal direction of the furnace and are located on both sides of the mesh belt conveyor line.

[0014] Furthermore, the hot air circulation assembly includes an impeller arranged in the heat treatment space, a driving structure arranged outside the furnace, and a transmission shaft connecting the driving structure and the impeller.

[0015] Furthermore, the driving structure includes a driving motor and a transmission member connected between the driving motor and the transmission shaft.

[0016] Furthermore, a heat sink is provided on the transmission shaft.

[0017] The beneficial effect of the utility model is that: the application inserts the heater in the vertical direction on the top of the furnace so that the heater can directly extend into the heat treatment space of the furnace, so that the heat generated by the heater can be directly released in the heat treatment space, and then cooperates with the hot air circulation component to make the hot air flow, thereby improving the heating efficiency in the heat treatment space and making the temperature in the heat treatment space more uniform. In addition, since it is installed on the top of the furnace by plugging, it is convenient to inspect and maintain the heater, which effectively reduces the maintenance cost.

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the internal structure of a uniformly heated mesh belt tempering furnace shown in one embodiment of the present application.

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the heating component. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. In addition, in the present utility model, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0026] Please refer to Figure 1 to Figure 2 An embodiment of the present application shows a uniformly heated mesh belt tempering furnace (hereinafter referred to as “mesh belt tempering furnace”), which includes a furnace 10, a mesh belt conveyor line 20, a hot air circulation component 30 and a heating component 40.

[0027] A heat treatment space 11 is formed inside the furnace 10, and a mesh belt conveyor line 20 is arranged in the heat treatment space 11 along the longitudinal rectangle of the furnace 10. The mesh belt conveyor line 20 is used to convey parts in and out of the heat treatment space 11 for heat treatment, which is a prior art and will not be described in detail.

[0028] The hot air circulation assembly 30 is disposed on the top of the furnace 10 , and is partially located in the heat treatment space 11 to drive the hot air in the heat treatment space 11 to flow.

[0029] In this embodiment, the hot air circulation assembly 30 includes an impeller 35 disposed in the heat treatment space 11, a driving structure disposed outside the furnace 10, and a transmission shaft 34 connecting the driving structure and the impeller 35. The driving structure drives the transmission shaft 34 to rotate, thereby driving the impeller 35 to rotate, so that the hot air in the heat treatment space 11 flows, which can more effectively transfer heat to the surface and interior of the workpiece, improve the heating speed, efficiency and heating uniformity, and thus shorten the heating time.

[0030] In this embodiment, the driving structure includes a driving motor 31 and a transmission member 32 connected between the driving motor 31 and the transmission shaft 34. The transmission member 32 is a gear transmission box, which transmits the power of the driving motor 31 to the transmission shaft 34 through the gear transmission box, while avoiding direct connection between the driving member and the transmission shaft 34, so as to reduce the heat conducted from the transmission shaft 34 to the driving motor 31, and avoid damage to the driving motor 31 due to excessive temperature. Of course, the transmission member 32 can also be a transmission structure such as a belt transmission structure or a chain transmission structure, as long as the above technical effects can be achieved, and no specific limitation is made here.

[0031] The transmission shaft is provided with a heat sink 33. In the present embodiment, the heat sink 33 comprises a tank body sleeved on the rotating shaft and heat dissipation oil grease filled in the tank body, a heat sink is provided outside the tank body, and the heat dissipation grease contacts the transmission shaft 34, so that the heat of the transmission shaft 34 is transferred to the heat sink to be dissipated into the atmosphere, thereby reducing the heat transferred to the drive motor 31. Of course, in other embodiments, heat dissipation can also be performed by heat dissipation mechanisms such as fans, as long as the above-mentioned effects are achieved, and no specific limitation is made here.

[0032] The heating assembly 40 includes heater groups symmetrically arranged on both sides of the hot air circulation assembly 30, each heater group includes a plurality of heaters arranged at intervals, the heaters are vertically plugged into the furnace 10, and partially extend into the heat treatment space 11. The number and spacing of the heaters are reasonably set so that the temperature in the heat treatment space 11 can quickly reach the heat treatment requirements. Therefore, the number and spacing of the heaters can be set as needed and are not specifically limited here.

[0033] In this embodiment, the heater includes a connection portion 41 connected to a power source, a heating portion 43 for generating heat energy, and a heat insulating portion 42 connected between the connection portion 41 and the heating portion 43, and the length of the heat insulating portion 42 is equal to the wall thickness of the furnace 10. The heater is a resistance wire heater, and a terminal 413 is provided on the connection portion 41, and the terminal 413 is externally connected to a power supply. The heating portion 43 is provided with a resistance wire and is connected to the terminal 413 through a wire provided in the heat insulating portion 42. The length of the heat insulating portion 42 is equal to the wall thickness of the furnace 10, so that when the heater is plugged into the furnace 10, the heating portion 43 is completely located in the heat treatment space 11, so that the heat generated by heating can be completely dissipated in the heat treatment space 11. In addition, the diameter of the insulation part 42 is equal to or slightly larger than the plug-in hole on the furnace 10, and the insulation part 42 is made of elastic refractory insulation material, so that when the insulation part 42 is plugged into the plug-in hole, the gap between the insulation part 42 and the plug-in hole is eliminated as much as possible, thereby improving the thermal insulation effect of the furnace 10.

[0034] In this embodiment, a thermal connection flange 12 connected and fixed to the connection part 41 is provided at the top of the furnace 10, and the connection part 41 is sealed and connected to the thermal connection flange 12. The connection part 41 includes a connection body 411 and a fixing plate 412 formed on the connection body 411 and adapted to the thermal connection flange 12. The connection body 411 is a columnar body, and the diameter is smaller than the inner diameter of the connection flange 12. A thermal insulation pad and a sealing ring are provided between the fixing plate 412 and the thermal connection flange 12, and the fixing plate 412 is fixedly connected by bolts, and a thermal insulation coating is sprayed on the outer surfaces of the thermal connection flange 12 and the fixing plate 412 to avoid heat loss of the furnace 10 and improve the thermal insulation effect.

[0035] The heating part 43 includes at least two U-shaped heating bodies, and the angles between the planes where the two adjacent U-shaped heating bodies are located are equal. In this embodiment, the resistance wire is arranged in the U-shaped heating body, and two U-shaped heating bodies are arranged, and the planes where the two U-shaped heating bodies are located are perpendicular to each other. Of course, in other embodiments, multiple U-shaped heating bodies can also be arranged, and the number is determined by the diameter of the U-shaped heating body, which is not limited here.

[0036] In this embodiment, the heating parts 43 are spaced apart along the longitudinal direction of the furnace 10 and are located on both sides of the mesh belt conveyor line 20. Such arrangement allows the heating parts 43 to heat both sides of the mesh belt conveyor line 20 at the same time, making the temperature rise more uniform.

[0037] The present application inserts a heater vertically at the top of the furnace so that the heater can directly extend into the heat treatment space of the furnace, thereby allowing the heat generated by the heater to be directly released into the heat treatment space, and then cooperates with a hot air circulation component to make the hot air flow, thereby improving the heating efficiency in the heat treatment space and making the temperature in the heat treatment space more uniform. In addition, since it is installed on the top of the furnace by plugging, it is convenient to inspect and maintain the heater, effectively reducing the maintenance cost.

[0038] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A uniformly heated mesh belt tempering furnace, characterized in that: The mesh belt tempering furnace comprises: A furnace chamber, wherein a heat treatment space is formed inside; A mesh belt conveyor line is arranged in the heat treatment space along the longitudinal rectangle of the furnace; A hot air circulation component is arranged on the top of the furnace and is partially located in the heat treatment space to drive the hot air in the heat treatment space to flow; The heating assembly includes heater groups symmetrically arranged on both sides of the hot air circulation assembly, each heater group includes a plurality of heaters arranged at intervals, the heaters are vertically plugged into the furnace and partially extend into the heat treatment space.

2. The uniformly heated mesh belt tempering furnace according to claim 1, characterized in that: The heater comprises a connection part connected to a power source, a heating part for generating heat energy, and a heat insulating part connected between the connection part and the heating part, wherein the length of the heat insulating part is equal to the wall thickness of the furnace.

3. The uniformly heated mesh belt tempering furnace according to claim 2, characterized in that: A connecting flange fixedly connected to the connecting portion is disposed on the top of the furnace, and the connecting portion is sealedly connected to the connecting flange.

4. The uniformly heated mesh belt tempering furnace according to claim 2, characterized in that: The heating part comprises at least two U-shaped heating bodies, and the angles between the planes where two adjacent U-shaped heating bodies are located are equal.

5. The uniformly heated mesh belt tempering furnace according to claim 2, characterized in that: The heating parts are distributed at intervals along the longitudinal direction of the furnace and are located on both sides of the mesh belt conveyor line.

6. The uniformly heated mesh belt tempering furnace according to claim 1, characterized in that: The hot air circulation assembly includes an impeller arranged in the heat treatment space, a driving structure arranged outside the furnace, and a transmission shaft connecting the driving structure and the impeller.

7. The uniformly heated mesh belt tempering furnace according to claim 6, characterized in that: The driving structure includes a driving motor and a transmission member connected between the driving motor and the transmission shaft.

8. The uniformly heated mesh belt tempering furnace according to claim 7, characterized in that: A heat sink is arranged on the transmission shaft.

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