Heating furnace

Abstract

The utility model belongs to the technical field of heating equipment, and particularly discloses a heating furnace which comprises a furnace body and a heating assembly, the furnace body is of a hollow U-shaped structure, the heating assembly is arranged in a hollow cavity of the furnace body, and the hollow cavity is filled with nanometer heat preservation material particles. A corundum barrel is arranged in the furnace body in the circumferential direction, and a heating area is arranged in the corundum barrel. A temperature measuring hole is formed in the bottom of the groove of the furnace body, and the temperature measuring assembly can be inserted into the heating area from the temperature measuring hole to measure the temperature. A plurality of containers filled with magnesium oxide powder to be heated are put into a heating furnace in batches to be heated, so that the heating efficiency can be improved. And by using the nano thermal insulation material particles, thermal insulation can be realized.

Description

Technical Field

[0001] This utility model belongs to the technical field of heating equipment, and in particular relates to a heating furnace. Background Technology

[0002] Armored thermocouples, as temperature measurement sensors, are usually used in conjunction with temperature transmitters, regulators, and display instruments to form process control systems. They are used to directly measure or control the temperature of fluids, steam, gaseous media, and solid surfaces in the range of 0-1800℃ during various production processes.

[0003] In the process of producing armored thermocouple heads, the filled magnesium oxide powder needs to be preheated before the head can be installed. If it is not preheated, the magnesium oxide powder will expand and burst due to the large temperature difference when the armored thermocouple head is installed, making it impossible to complete the armored thermocouple head installation process.

[0004] Currently, most companies in the industry use single-burner alcohol lamps for heating, which results in low work efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a heating furnace to solve the problem of low work efficiency caused by using a single alcohol lamp for heating.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a heating furnace, comprising a furnace body and a heating component, wherein the furnace body is a hollow U-shaped structure, the heating component is disposed in the hollow cavity of the furnace body, and the hollow cavity is filled with nano-insulating material particles; the inner circumference of the furnace body is a corundum cylinder, and the interior of the corundum cylinder is a heating area; a temperature measuring hole is provided at the bottom of the groove of the furnace body, and the temperature measuring component can be inserted into the heating area through the temperature measuring hole to measure the temperature.

[0007] Furthermore, the furnace body is also covered with a protective sleeve, and the top of the protective sleeve is provided with a first through hole directly opposite the temperature measuring hole. The temperature measuring component includes a thermocouple and a blind tube. The blind tube is a tube with one end open and the other end closed. The closed end of the blind tube passes through the first through hole and the temperature measuring hole and is inserted into the heating area. The thermocouple is inserted into the blind tube.

[0008] Furthermore, the top of the sheath is provided with a first mounting bracket, the bottom of which covers the first through hole; the first mounting bracket is provided with a second through hole directly opposite the first through hole, and the closed end of the blind tube passes through the second through hole, the first through hole and the temperature measuring hole and is inserted into the heating area, and the blind tube is fixed to the first mounting bracket.

[0009] Furthermore, the outer periphery of the corundum cylinder is provided with several mounting grooves along its axial direction, and the heating wire is installed in the mounting grooves.

[0010] Furthermore, the heating wire contacts the bottom of the mounting groove.

[0011] Furthermore, the top of the sheath is provided with a second mounting bracket, and the top of the sheath and the furnace body are provided with a third through hole. The bottom of the second mounting bracket covers the third through hole. The second mounting bracket is provided with a fourth through hole that is directly opposite the third through hole. The top of the second mounting bracket is provided with a lead wire connector. One end of the electric furnace lead wire is connected to the heating wire, and the other end passes through the third through hole and the fourth through hole and is connected to the lead wire connector.

[0012] Furthermore, a vacuum sleeve is provided on the outside of the sheath, and the vacuum sleeve is provided with a fifth through hole and a sixth through hole. The fifth through hole is used for the blind tube to pass through; the sixth through hole is used for the second mounting bracket to pass through.

[0013] The beneficial effects of this technical solution are as follows:

[0014] ① Heating multiple containers containing magnesium oxide powder to be heated in batches in a heating furnace can improve heating efficiency.

[0015] ② This technical solution uses nano-insulating material particles, which can achieve heat preservation.

[0016] ③ In this technical solution, the heating wire is in contact with the bottom of the mounting groove to ensure the heating effect.

[0017] ④ In this technical solution, the vacuum jacket can isolate the heat transfer after the heating furnace is heated, thus preventing burns. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a heating furnace according to the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure without the vacuum sleeve;

[0020] Figure 3 This is a schematic diagram of the furnace body.

[0021] Figure 4 This is a structural diagram of the sheath;

[0022] Figure 5 This is a schematic diagram of the vacuum sleeve structure. Detailed Implementation

[0023] The following detailed description illustrates the specific implementation method:

[0024] The reference numerals in the accompanying drawings include: furnace body 1, corundum cylinder 2, vacuum sleeve 3, sheath 4, nano-insulation material particles 5, heating wire 6, mounting groove 7, blind tube 8, first mounting bracket 9, second mounting bracket 10, temperature measuring hole 11, first through hole 12, second through hole 13, third through hole 14, fourth through hole 15, lead wire connector 16, fifth through hole 17, sixth through hole 18, seventh through hole 19, eighth through hole 20, ninth through hole 21, heating zone 22, temperature measuring tube 23, first lead-out tube 24, second lead-out tube 25, mounting tube 26.

[0025] 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.

[0026] The basic implementation examples are as follows: Figure 1-5 As shown: A heating furnace, such as Figure 1 As shown, it includes a furnace body 1, a protective sleeve 4, a vacuum sleeve 3, and a heating assembly. The furnace body 1 and the protective sleeve 4 are an integral structure. Figure 2 , 3 As shown, the furnace body 1 has a hollow U-shaped structure, and the hollow cavity is filled with nano-insulating material particles 5. The inner circumference of the furnace body 1 is a corundum cylinder 2, and the interior of the corundum cylinder 2 is the heating zone 22. The heating element is located within the hollow cavity of the furnace body 1 and is a heating wire 6. Several mounting grooves 7 are provided along the axial direction of the outer circumference of the corundum cylinder 2, and the heating wire 6 is installed in the mounting grooves 7, with the heating wire 6 in contact with the bottom of the mounting grooves 7. A temperature measuring hole 11 is provided at the top of the furnace body 1. The temperature measuring element can be inserted into the heating zone 22 through the temperature measuring hole 11 to measure the temperature. The temperature measuring element includes a thermocouple and a blind tube 8; the blind tube 8 is a tube with one open end and one closed end, and the thermocouple is inserted into the blind tube 8.

[0027] like Figure 1 , 2 As shown in Figure 4, the sheath 4 wraps around the outside of the furnace body 1. The top of the sheath 4 has a first through hole 12 that is directly opposite to the temperature measuring hole 11. The top of the sheath 4 has a first mounting bracket 9, the bottom of which covers the first through hole 12. The bottom of the first mounting bracket 9 is fixed to the top of the sheath 4 by laser welding. The first mounting bracket 9 has a second through hole 13 that is directly opposite to the first through hole 12. The closed end of the blind tube 8 passes through the second through hole 13, the first through hole 12, and the temperature measuring hole 11 and is then inserted into the heating zone 22. The blind tube 8 is welded to the first mounting bracket 9.

[0028] The top of the sheath 4 is provided with a second mounting bracket 10. The top of both the sheath 4 and the furnace body 1 is provided with a third through hole 14. The bottom of the second mounting bracket 10 covers the third through hole 14. The bottom of the second mounting bracket 10 is fixed to the top of the sheath 4 by laser welding. The second mounting bracket 10 is provided with a fourth through hole 15 directly opposite the third through hole 14. The top of the second mounting bracket 10 is provided with a lead wire connector 16. One end of the electric furnace lead wire is connected to the heating wire 6, and the other end passes through the third through hole 14 and the fourth through hole 15 and is connected to the lead wire connector 16.

[0029] like Figure 1 , 5 As shown, the vacuum sleeve 3 is fitted over the outer side of the protective sleeve 4. The vacuum sleeve 3 has a fifth through hole 17 and a sixth through hole 18. The fifth through hole 17 is used for the passage of the blind tube 8. Specifically, a temperature measuring tube 23 is installed inside the temperature measuring hole 11, the first through hole 12, and the fifth through hole 17. The blind tube 8, the first mounting bracket 9, and the temperature measuring tube 11 are welded together. The outer side of the open end of the blind tube 8 is sealed to the temperature measuring tube 11 by argon arc welding. The sixth through hole 18 is used for the passage of the second mounting bracket 10. An installation tube 26 is installed inside the sixth through hole 18. The middle part of the second mounting bracket 10 is sealed to the outer end of the installation tube 26 by argon arc welding. The interior of the vacuum sleeve 3 is a vacuum chamber, and the vacuum chamber has a vacuum extraction port.

[0030] A temperature sensor can be installed inside a container filled with magnesium oxide powder. The furnace body 1, the sheath 4, and the vacuum sleeve 3 are respectively provided with a seventh through hole 19, an eighth through hole 20, and a ninth through hole 21. Specifically, the seventh through hole 19 and the eighth through hole 20 are provided with a first lead-out pipe 24, and the ninth through hole 21 is provided with a second lead-out pipe 25. The transmission line of the temperature sensor is led out through the first lead-out pipe 24 and the second lead-out pipe 25.

[0031] 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 apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A heating furnace, characterized in that: The furnace includes a furnace body (1) and a heating component. The furnace body (1) is a hollow U-shaped structure. The heating component is located in the hollow cavity of the furnace body (1). The hollow cavity is filled with nano-insulating material particles (5). The inner circumferential part of the furnace body (1) is a corundum cylinder (2). The interior of the corundum cylinder (2) is a heating area (22). The bottom of the groove of the furnace body (1) is provided with a temperature measuring hole (11). The temperature measuring component can be inserted into the heating area (22) through the temperature measuring hole (11) to measure the temperature.

2. The heating furnace according to claim 1, characterized in that: The furnace body (1) is also covered with a protective sleeve (4). The top of the protective sleeve (4) is provided with a first through hole (12) that is directly opposite to the temperature measuring hole (11). The temperature measuring component includes a thermocouple and a blind tube (8). The blind tube (8) is a tube with one end open and the other end closed. The closed end of the blind tube (8) passes through the first through hole (12) and the temperature measuring hole (11) and is inserted into the heating area (22). The thermocouple is inserted into the blind tube (8).

3. A heating furnace according to claim 2, characterized in that: The top of the sheath (4) is provided with a first mounting bracket (9), and the bottom of the first mounting bracket (9) covers the first through hole (12). The first mounting bracket (9) is provided with a second through hole (13) that is directly opposite to the first through hole (12). The closed end of the blind tube (8) passes through the second through hole (13), the first through hole (12) and the temperature measuring hole (11) and is inserted into the heating area (22). The blind tube (8) is fixed to the first mounting bracket (9).

4. A heating furnace according to claim 1, characterized in that: The heating component is a heating wire (6); the outer periphery of the corundum cylinder (2) is provided with several mounting grooves (7) along its axial direction, and the heating wire (6) is installed in the mounting grooves (7).

5. A heating furnace according to claim 4, characterized in that: The heating wire (6) is in contact with the bottom of the mounting groove (7).

6. A heating furnace according to claim 3, characterized in that: The top of the sheath (4) is provided with a second mounting bracket (10), and the top of the sheath (4) and the furnace body (1) are provided with a third through hole (14). The bottom of the second mounting bracket (10) covers the third through hole (14). The second mounting bracket (10) is provided with a fourth through hole (15) that is directly opposite to the third through hole (14). The top of the second mounting bracket (10) is provided with a lead wire connector (16). One end of the electric furnace lead wire is connected to the heating wire (6), and the other end passes through the third through hole (14) and the fourth through hole (15) and is connected to the lead wire connector (16).

7. A heating furnace according to claim 6, characterized in that: The outer side of the sheath (4) is also provided with a vacuum sleeve (3), which has a fifth through hole (17) and a sixth through hole (18). The fifth through hole (17) is used to pass through the blind tube (8), and the sixth through hole (18) is used to pass through the second mounting bracket (10).

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