Graphite furnace

Abstract

The utility model provides a graphite furnace. The graphite furnace comprises a heat conduction pipe; the heat conduction pipe is sleeved with the heating body; the shell is arranged outside the heating body in a sleeving manner; a clearance space exists between the inner wall surface of the shell and the outer wall surface of the heating body; the temperature collection structure is arranged in the clearance space in a sleeving manner; the temperature collection structure is used for keeping the heat generated by the heating body warm; the valve body assembly is arranged on the shell; one end of the valve body assembly penetrates through the shell and extends into the clearance space, and the valve body assembly is used for extracting gas in the clearance space. According to the graphite furnace, the heat preservation effect can be effectively achieved through the arrangement of the temperature collection structure. The gap space can be in two use states, namely a vacuum state or a non-vacuum state through the arrangement of the valve body assembly, and the heat preservation effect is excellent when the gap space is in the vacuum state. And in a non-positive vacuum state, a heat dissipation process can be realized more quickly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heating equipment technical field, specifically, it relates to a graphite furnace. BACKGROUND

[0002] Hot forming is a kind of material block is heated to softening point above, melt temperature below a certain temperature range, then under the action of external force (such as air pressure, mechanical pressure etc.), it is tightly attached to the die surface, and the product of the required shape is obtained after cooling processing method.

[0003] Hot forming needs to preheat the material block, and in the prior art, the material block is heated to a preset temperature in a heating furnace first, and then the material block is taken out from the heating furnace and placed in a mold for subsequent processing. The existing heating furnace has the problems of long heating and cooling time and slow heating efficiency. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a graphite furnace, which aims to solve the technical problems of long heating and cooling time and slow heating efficiency in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a graphite furnace, which comprises:

[0006] A heat conduction pipe;

[0007] A heating body is sleeved outside the heat conduction pipe;

[0008] A shell is sleeved outside the heating body; there is a gap space between the inner wall surface of the shell and the outer wall surface of the heating body;

[0009] A temperature collecting structure is sleeved in the gap space; the temperature collecting structure is used for heat preservation of the heat generated by the heating body;

[0010] A valve body assembly is arranged on the shell; one end of the valve body assembly penetrates the shell and extends into the gap space, and the valve body assembly is used for extracting gas in the gap space.

[0011] Preferably, the shell comprises:

[0012] A shell body is sleeved outside the heating body;

[0013] A first air inlet disc is arranged at one end of the shell body; the first air inlet disc is in contact with one end of the temperature collecting structure;

[0014] A first flow guide pipe seat is connected with one end of the first air inlet disc away from one end of the shell body; the other end is an open end;

[0015] A second flow guide pipe seat is arranged at the other end of the shell body;

[0016] A cooling disc is arranged at the other end of the shell body, and the cooling disc is sleeved on the second flow guide pipe base;

[0017] A second air inlet disc is connected with the end face of the cooling disc away from the shell body.

[0018] Preferably, the heat pipe, the heating body, the temperature collecting structure and the shell body are respectively in a cylindrical structure, and the axis of the heat pipe coincides with the axis of at least one of the heating body, the temperature collecting structure and the shell body.

[0019] Preferably, the temperature collecting structure is a graphite structure layer.

[0020] Preferably, the shell body comprises:

[0021] An inner layer shell is sleeved on the temperature collecting structure.

[0022] An outer layer shell is sleeved on the inner layer shell, and the upper and lower ends of the outer layer shell are respectively sealed and connected with the upper and lower ends of the inner layer shell through connecting portions; a sealed gap exists between the outer layer shell and the inner layer shell, and the sealed gap is filled with inert gas or is in a vacuum state.

[0023] Preferably, the temperature measuring assembly is further arranged on the shell body, and the temperature measuring assembly is used for measuring the temperature of the gap space.

[0024] Preferably, the vacuum cover is detachably connected with the shell body, and the two ends of the heat pipe are blocked when the vacuum cover is connected with the end of the shell body.

[0025] Preferably, one end of the shell body is connected with the vacuum cover through a connecting pipe.

[0026] The graphite furnace has the advantages that, compared with the prior art, the temperature collecting structure can effectively play a heat preservation role, the valve body assembly can make the gap space be in two use states, i.e., in a vacuum state or in a non-vacuum state, the heat preservation effect is excellent when the gap space is in the vacuum state, and the heat dissipation process can be more quickly realized when the gap space is in the non-vacuum state, i.e., the device can have a fast heating efficiency and can quickly realize temperature rise, and can also have a function of more quickly realizing heat dissipation. BRIEF DESCRIPTION OF DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the structure of a graphite furnace provided for an embodiment of this utility model. Figure 1 ;

[0029] Figure 2 A schematic diagram of the structure of a graphite furnace provided for an embodiment of this utility model. Figure 2 ;

[0030] Figure 3 A schematic diagram of the structure of a graphite furnace provided for an embodiment of this utility model. Figure 3 ;

[0031] Figure 4 A schematic diagram of the structure of a graphite furnace provided for an embodiment of this utility model. Figure 4 ;

[0032] Figure 5 for Figure 4 A structural schematic diagram taken along line AA in cross section.

[0033] In the diagram: 1. Heat pipe; 2. Heating element; 3. Housing; 31. Housing body; 32. First air inlet plate; 33. First guide pipe seat; 34. Second guide pipe seat; 35. Cooling plate; 36. Second air inlet plate; 4. Temperature collection structure; 5. Valve body assembly; 6. Vacuum cover; 7. Temperature measuring assembly; 8. Guide sleeve; 9. Connecting pipe. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0036] Reference Figures 1 to 5 The present invention provides a graphite furnace. The graphite furnace includes: a heat-conducting pipe 1, a heating element 2, a shell 3, and a heat-collecting structure 4. The heat-conducting pipe 1 has a through hole for an object to pass through; the through hole axially penetrates the heat-conducting pipe 1; the heating element 2 is sleeved outside the heat-conducting pipe 1; the heating element 2 heats the heat-conducting pipe 1 when in operation; the shell 3 is sleeved outside the heating element 2; a gap exists between the inner wall of the shell 3 and the outer wall of the heating element 2; the heat-collecting structure 4 is sleeved within the gap; the heat-collecting structure 4 collects and retains the heat generated by the heating element 2. A valve assembly 5 is disposed on the shell 3; one end of the valve assembly 5 penetrates the shell 3 and extends into the gap; the valve assembly 5 is used to extract gas from the gap.

[0037] In some feasible embodiments, the valve body assembly 5 is a vacuum valve connected to the housing 3. One end of the vacuum valve extends into the gap space. By operating the vacuum valve, the gas in the gap space can be extracted, so that the gap space is in a vacuum state, which can effectively reduce the ineffective loss of heat.

[0038] As one specific embodiment of this utility model, refer to Figures 1 to 5 The heating element 2 has a cylindrical structure. It is fitted over the heat pipe 1. The axis of the heating element 2 coincides with the axis of the heat pipe 1. The upper end of the heating element 2 is in sealed contact with the outer surface of the heat pipe 1. The lower end of the heating element 2 is also in sealed contact with the outer surface of the heat pipe 1. An electrical component is connected to the heating element 2, including an electrode plate connected to the heating element 2 and a power supply structure connected to the electrode plate. When the power supply structure is energized, energy is supplied to the heating element 2 through the electrode plate, causing the heating element 2 to generate heat.

[0039] In this embodiment, the heat-collecting structure 4 is a cylindrical structure. The cylindrical structure is fitted over the heating element 2. The axis of the heat-collecting structure 4 coincides with the axis of the heat-conducting pipe 1. The heat-collecting structure 4 is made of graphite. A radially penetrating through-hole is provided on the cylindrical structure. The presence of the through-hole facilitates the valve assembly 5's rapid extraction of gas from the gap space.

[0040] As one specific embodiment of this utility model, refer to Figures 1 to 5 The housing 3 includes: a housing body 31, a first air intake plate 32, a first guide tube seat 33, a second guide tube seat 34, a cooling plate 35, and a second air intake plate 36; the housing body 31 is sleeved on the heating element 2; the first air intake plate 32 is disposed at one end of the housing body 31; the first air intake plate 32 is in contact with one end of the heat collection structure 4; one end of the first guide tube seat 33 is connected to the end of the first air intake plate 32 away from the housing body 31; the other end is an open end; the second guide tube seat 34 is disposed at the other end of the housing body 31; the cooling plate 35 is disposed at the other end of the housing body 31, and the cooling plate 35 is sleeved on the second guide tube seat 34; the second air intake plate 36 is connected to the end face of the cooling plate 35 away from the housing body 31.

[0041] In some feasible embodiments, the housing body 31 includes an inner shell and an outer shell, with the inner shell fitted over the heat-collecting structure 4; the outer shell fitted over the inner shell; the upper and lower ends of the outer shell are respectively sealed to the upper and lower ends of the inner shell via connecting portions; a sealing gap exists between the outer shell and the inner shell, the sealing gap being filled with inert gas or in a vacuum state. The structural design of the housing body 31 effectively reduces heat loss efficiency.

[0042] In some feasible embodiments, the first air intake plate 32 is in communication with the gap space, the first air intake plate 32 is connected to the first external pipeline, and the first external pipeline is connected to the air pump structure. When the air pump structure is in operation, air can be supplied to the first air intake plate 32 through the first external pipeline, and the air can eventually enter the gap space.

[0043] The second air intake plate 36 is connected to the gap space, and the first air intake plate 32 is connected to the second external pipe, which in turn is connected to the air pump structure. When the air pump structure is in operation, air can be supplied to the second air intake plate 36 through the second external pipe, and the air can eventually enter the gap space.

[0044] The cooling plate 35 is equipped with multiple cooling channels, which are connected to the refrigeration structure via a third external pipeline. The refrigeration structure injects refrigerant into the cooling channels through the third external pipeline, causing the refrigerant to circulate and cool the device.

[0045] In some feasible embodiments, the first guide tube seat 33 is connected to the vacuum cover 6 via a connecting pipe 9. Specifically, the end of the first guide tube seat 33 facing away from the first air inlet plate 32 is connected to the connecting pipe 9, and the end of the connecting pipe 9 facing away from the first guide tube seat 33 is detachably connected to the vacuum cover 6. The connecting pipe 9 can be connected and fixed to an external structure. Specifically, the external structure is provided with a limiting hole adapted to the connecting pipe 9. By connecting and fixing the connecting pipe 9 to the external structure, the graphite furnace is fixed to the external structure.

[0046] As one specific embodiment of this utility model, refer to Figures 1 to 5 The graphite furnace also includes a vacuum cover 6, which is detachably connected to the housing 3. Two sets of vacuum covers 6 are provided. When the vacuum covers 6 are connected to both ends of the housing 3, they seal both ends of the heat-conducting pipe 1.

[0047] As one specific embodiment of this utility model, refer to Figures 1 to 5 The graphite furnace also includes a temperature measuring component 7 connected to the housing 3, with one end of the temperature measuring component 7 extending into the gap space. The temperature measuring component 7 is used to measure the temperature of the gap space.

[0048] As one specific embodiment of this utility model, refer to Figures 1 to 5 One end of the flow guide sleeve 8 extends into the heat conduction pipe 1, and the other end is connected to the first flow guide pipe seat 33.

[0049] The beneficial effects of the graphite furnace provided by this utility model are as follows: Compared with the prior art, the graphite furnace of this utility model has an effective heat-collecting structure 4 that can effectively maintain heat. The valve assembly 5 allows the gap space to be in two operating states, namely, a vacuum state or a non-vacuum state. In the vacuum state, the heat preservation effect is excellent. In the non-positive vacuum state, the heat dissipation process is faster. In other words, this device not only has the function of rapid heating and quick temperature rise, but also the function of faster heat dissipation.

[0050] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0051] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0052] The graphite furnace provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A graphite furnace, characterized in that, include: Heat pipe (1); The heating element (2) is sleeved outside the heat-conducting pipe (1); A housing (3) is fitted over the heating element (2); there is a gap between the inner wall of the housing (3) and the outer wall of the heating element (2); A heat-collecting structure (4) is fitted inside the gap space; the heat-collecting structure (4) is used to keep the heat generated by the heating element (2) warm; A valve body assembly (5) is disposed on the housing (3); one end of the valve body assembly (5) penetrates the housing (3) and extends into the gap space, and the valve body assembly (5) is used to extract gas in the gap space.

2. A graphite furnace as described in claim 1, characterized in that, The housing (3) includes: The housing body (31) is fitted over the heating element (2); The first air intake plate (32) is disposed at one end of the housing body (31); the first air intake plate (32) is in contact with one end of the heat collection structure (4); The first guide tube seat (33) is connected at one end to the end of the first air intake plate (32) that is away from the housing body (31); the other end is an open end; The second guide tube seat (34) is disposed at the other end of the housing body (31); A cooling plate (35) is disposed at the other end of the housing body (31), and the cooling plate (35) is sleeved on the outside of the second guide tube seat (34); The second air intake plate (36) is connected to the end face of the cooling plate (35) away from the housing body (31).

3. A graphite furnace as described in claim 2, characterized in that, The heat pipe (1), the heating element (2), the heat collection structure (4), and the shell body (31) are all cylindrical structures; the axis of the heat pipe (1) coincides with the axis of at least one of the heating element (2), the heat collection structure (4), and the shell body (31).

4. A graphite furnace as described in claim 3, characterized in that, The heat collection structure (4) is a cylindrical body formed by graphite structural layers.

5. A graphite furnace as described in claim 4, characterized in that, The housing body (31) includes: The inner shell is fitted over the heat collection structure (4); An outer shell is fitted over the inner shell; the upper and lower ends of the outer shell are respectively sealed to the upper and lower ends of the inner shell through connecting parts; a sealing gap exists between the outer shell and the inner shell, and the sealing gap is filled with inert gas or is in a vacuum state.

6. A graphite furnace as described in claim 5, characterized in that, It also includes a temperature measuring component (7) connected to the housing (3), the temperature measuring component (7) being used to measure the temperature of the gap space.

7. A graphite furnace as described in any one of claims 1 to 6, characterized in that, It also includes a vacuum cover (6), which is detachably connected to the housing (3); when the vacuum cover (6) is connected to the end of the housing (3), it seals both ends of the heat pipe (1).

8. A graphite furnace as described in claim 7, characterized in that, One end of the housing (3) is connected to the vacuum cover (6) via a connecting pipe (9).

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