Heat preservation furnace capable of adjusting internal pressure

Abstract

The utility model provides a holding furnace capable of adjusting internal pressure, and belongs to the technical field of holding furnaces. Comprising a holding furnace main body placed on a mounting rack; the sealing cover is arranged on the heat preservation furnace body, the inner side of the sealing cover is in a wave shape, and the sealing cover is divided into an inner layer. By arranging the sealing cover and the wave-shaped structure, the contact surface area of the sealing cover and the furnace body can be increased, so that the sealing performance is improved, heat loss is reduced, thermal stress caused by temperature change is dispersed, deformation caused by thermal expansion and contraction is reduced, the service life of the sealing cover is prolonged, and the service life of the furnace body is prolonged. The combination of multiple layers of materials gives consideration to mechanical strength, heat efficiency and corrosion resistance, so that the sealing cover can still keep good performance in a high-temperature and high-pressure environment, the heat efficiency of the holding furnace is improved, energy consumption is reduced, safety and stability of equipment are enhanced, and maintenance cost and downtime are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat preservation furnaces, in particular to a heat preservation furnace capable of adjusting internal pressure. Background Art

[0002] A holding furnace is an industrial furnace specially designed to keep molten metal at a specific temperature to ensure the quality of the metal and prevent solidification. The holding furnace is widely used in metal processing, casting and metallurgical industries. The main function of the holding furnace is to keep the molten metal in a liquid state. By controlling the temperature in the furnace, the fluidity and processing quality of the metal are ensured. This is especially important for continuous casting and metal transfer processes. During the transportation or preparation of the metal, the holding furnace can prevent the molten metal from solidifying due to a drop in temperature, thereby ensuring the continuity and efficiency of production.

[0003] In the prior art, due to the significant deformation risk of the sealing cover under high temperature and high pressure conditions, it not only weakens its sealing performance, but may also cause excessive heat loss and pose potential safety risks that cannot be ignored. Therefore, the present application provides an insulation furnace with adjustable internal pressure to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a heat preservation furnace with adjustable internal pressure to solve the problem that the sealing cover on the existing heat preservation furnace is easy to deform under high temperature and high pressure working environment, thereby affecting its sealing performance, causing heat loss and safety problems.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A heat preservation furnace with adjustable internal pressure comprises: a heat preservation furnace body placed on a mounting frame; a sealing cover arranged on the heat preservation furnace body, the inner side of the sealing cover is wavy, the sealing cover is divided into an inner layer, a middle layer and an outer layer, the inner layer is made of light alloy, the middle layer is made of graphite, and the outer layer is made of ceramic material.

[0007] Preferably, the insulation furnace body is divided into an outer shell and an inner shell, the outer shell is made of high temperature resistant material, the inner shell is made of high efficiency insulation material, and an air layer is formed between the outer shell and the inner shell.

[0008] Preferably, the sensor is mounted on the sealing cover.

[0009] Preferably, a support member is installed on the insulation furnace body; a pressure regulating pump is installed on the support member, and the pressure regulating pump is connected to the insulation furnace body.

[0010] Preferably, a sealing strip is provided on the sealing cover, and the insulation furnace body is in the shape of a truncated cone.

[0011] Preferably, the stirring part is hermetically arranged on the sealing cover, and the stirring part includes: a driving member; a rotating member mounted on the driving member; and stirring blades mounted on the rotating member.

[0012] Preferably, the controller is mounted on the main body of the heat preservation furnace, and the controller includes a display screen and control buttons.

[0013] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0014] In the above solution, by providing a sealing cover, the wavy structure can increase the surface area of contact between the sealing cover and the furnace body, thereby improving the sealing performance, reducing heat loss, and also helping to disperse the thermal stress caused by temperature changes, reducing the deformation caused by thermal expansion and contraction, and extending the service life of the sealing cover. The multi-layer material combination takes into account mechanical strength, thermal efficiency, and corrosion resistance, enabling the sealing cover to maintain good performance under high-temperature and high-pressure environments. This not only improves the thermal efficiency of the heat preservation furnace, reduces energy consumption, but also enhances the safety and stability of the equipment, and reduces maintenance costs and downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0016] Figure 1 Schematic structural diagram of a heat preservation furnace with adjustable internal pressure;

[0017] Figure 2 Schematic structural diagram of a pressure regulating pump;

[0018] Figure 3 Schematic structural diagram of a housing;

[0019] Figure 4 Schematic structural diagram of a sealing cover;

[0020] Figure 5 Schematic structural diagram of an outer layer;

[0021] Figure 6 Schematic structural diagram of a driving member.

[0022] In the figure: 1, main body of the heat preservation furnace; 101, housing; 102, air layer; 103, inner shell; 2, sealing cover; 201, outer layer; 202, intermediate layer; 203, inner layer; 3, support member; 301, driving member; 302, rotating member; 303, stirring blades; 4, sensor; 5, mounting rack; 6, pressure regulating pump; 7, support member; 8, controller.

[0023] As shown in the figure, in order to clearly implement the structure of the embodiments of the present utility model, specific structures and devices are marked in the figure. However, this is only for illustrative purposes and is not intended to limit the present utility model to this specific structure, device, and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications made are still included within the scope of the appended claims. Detailed implementation manners

[0024] The following describes in detail a heat-insulating furnace with adjustable internal pressure provided by the present utility model in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative ways for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present utility model.

[0025] As Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown in

[0026] 、

[0027] and Figure 1 、 Figure 2 and Figure 3As shown, the main body 1 of the holding furnace is divided into an outer shell 101 and an inner shell 103. The outer shell 101 is made of high-temperature resistant materials, and the inner shell 103 is made of high-efficiency heat-insulating materials. An air layer 102 is formed between the outer shell 101 and the inner shell 103.

[0028] The outer shell 101 is made of high-temperature resistant materials, which can effectively resist the extreme temperatures of the external environment and protect the internal structure from damage. High-temperature resistant materials such as alloy cast iron or specific heat-resistant alloys have good mechanical strength and heat shock resistance, ensuring the stability of the holding furnace during long-term high-temperature operation. The inner shell 103 uses high-efficiency heat-insulating materials such as diatomaceous earth bricks, vermiculite, or refractory fibers. These materials have low thermal conductivity and can significantly reduce the heat transfer through the furnace wall, thereby improving energy efficiency. The selected heat-insulating materials should also have a small volume density and specific heat capacity to reduce heat storage losses and quickly respond to temperature changes inside the furnace, which is particularly important for holding furnaces with periodic operations. The air layer 102 is the gap between the outer shell 101 and the inner shell 103 without filling any substances. The setting of the air layer 102 utilizes the low thermal conductivity of air as an additional insulating layer to further reduce the heat dissipation through the furnace wall. At the same time, the air layer 102 can also act as a heat buffer to mitigate the impact of external temperature fluctuations on the internal environment of the furnace. The purpose of the three-layer design is to comprehensively achieve the heat-insulating effect and ensure that the furnace body can work stably at high temperatures for a long time. The protection of the outer shell 101, the heat insulation of the inner shell 103, and the heat insulation of the air layer 102 complement each other and jointly constitute an efficient heat protection system, enabling the holding furnace to operate under low energy consumption conditions, while extending its service life and maintaining a good working environment. When selecting materials and designing the structure, factors such as process requirements, cost-effectiveness, and operation convenience need to be comprehensively considered to achieve the optimal use effect.

[0029] As Figure 1 、 Figure 2 and Figure 4 shown, the sensor 4 is installed on the sealing cover 2.

[0030] The sensor 4 can monitor the temperature inside the furnace in real time to ensure that the temperature is within the set range, which is crucial for maintaining the fluidity and quality of the molten metal. Through precise temperature feedback, the operator can adjust the heating system in a timely manner to avoid overheating or insufficient temperature, thereby saving energy and improving production efficiency. In an insulating furnace with adjustable internal pressure, the sensor 4 is used to monitor the pressure inside the furnace to ensure that it is within a safe range, which is crucial for preventing equipment damage or potential hazards caused by excessive pressure. The data provided by the sensor 4 can help maintain the optimal furnace environment, which is particularly important for processes such as precision casting and heat treatment. The sensor 4 can be set with an alarm system to promptly alert the operator to take measures when the temperature or pressure exceeds the safe range, increasing the safety of equipment use. In extreme cases, the sensor 4 can also be linked to the control system to automatically take emergency measures, such as releasing overpressure or starting the cooling system, to prevent accidents.

[0031] As Figure 1 and Figure 2 shown, the support member 7 is installed on the insulating furnace body 1; the pressure regulating pump 6 is installed on the support member 7, and the pressure regulating pump 6 is connected to the insulating furnace body 1.

[0032] The main function of the pressure regulating pump 6 is to precisely control the air pressure inside the insulating furnace. By increasing or releasing gas, the pressure regulating pump 6 can increase or decrease the furnace pressure as needed, which is crucial for certain precision casting and heat treatment processes. By maintaining a certain pressure, it can promote the flow of molten metal, reduce the entrainment of gas, thereby improving the internal quality of the casting and reducing defects. Working in a high-pressure environment can effectively avoid equipment damage or dangerous accidents caused by abnormal pressure, ensuring the safety of operators and equipment.

[0033] As Figure 1 , Figure 2 and Figure 4 shown, a sealing strip is provided on the sealing cover 2, and the insulating furnace body 1 is in the shape of a truncated cone.

[0034] The truncated cone shape helps to more effectively utilize heat energy. It can promote the downward movement of hot air flow and evenly disperse it throughout the furnace body, thereby improving the heat distribution and reducing the occurrence of hot spots and cold spots. This efficient heat distribution can not only improve the consistency of the processed materials but also reduce energy consumption. Moreover, the truncated cone shape makes the internal structure simpler, without complex corners and edges, which simplifies the daily maintenance and cleaning work, reduces the downtime, and improves the production efficiency.

[0035] As Figure 1 , Figure 2 and Figure 6As shown, the stirring part 3 is hermetically arranged on the sealing cover 2. The stirring part 3 includes: a driving part 301; a rotating part 302 mounted on the driving part 301; and stirring blades 303 mounted on the rotating part 302.

[0036] The stirring blades 303 directly contact the molten material to push the material to flow, achieving effective mixing and homogenization. During the stirring process, the stirring blades 303 help to accelerate the transfer and distribution of heat energy, making the temperature in the furnace more uniform, improving the heating efficiency and reducing energy consumption. Moreover, in the holding furnace, the molten material may deposit due to uneven temperature or long-term stillness. The continuous stirring action of the stirring blades 303 can prevent this situation from occurring, ensuring the fluidity of the material and the cleanliness of the furnace body.

[0037] As Figure 1 and Figure 2 shown, the controller 8 is mounted on the holding furnace body 1. The controller 8 includes a display screen and control buttons.

[0038] The display screen provides the operator with real-time data and feedback, including key parameters such as the current temperature, pressure, stirring speed, etc. This instant information is crucial for precisely controlling the smelting process, ensuring that each step can be carried out according to the predetermined program. The advanced display screen of the controller 8 can display fault codes or warning messages, helping the operator quickly identify the problem, thereby reducing the troubleshooting time and improving the operation efficiency of the equipment. Through an intuitive graphical user interface (GUI), the display screen makes the operation simpler and easier to understand. Even non-professionals can easily master the operation of the equipment, which helps to reduce the training cost and improve the operation safety. The control buttons allow the operator to manually adjust the equipment settings, such as changing the temperature set point, adjusting the stirring speed, or starting / stopping the heating and stirring processes. This flexibility is the key to adapting to different production requirements. The controller 8 usually has both automatic and manual modes, and the control buttons can be used to switch between these modes, enabling the operator to choose between fully automatic production and manual intervention to cope with different production situations. In case of an emergency, the emergency stop button in the control buttons can immediately cut off all power supplies and stop all moving parts, which is crucial for ensuring the safety of the operator and preventing equipment damage.

[0039] For the technical solution provided by the present utility model, during use, the heat preservation furnace main body 1 is in a sealed state through the sealing cover 2. The wavy shape can increase the surface area in contact with the furnace opening, thereby improving the sealing effect. The wavy design can also better adapt to the slight deformation caused by temperature changes and maintain the reliability of the seal. The sensor 4 detects the pressure inside the furnace, and the pressure regulating pump 6 absorbs or releases gas to adjust the internal pressure and maintain the stability of the internal environment of the furnace. The driving member 301 drives the rotating member 302 to rotate, thereby driving the stirring blade 303 to rotate, and then stirring the molten material inside the furnace to make the temperature distribution inside the furnace more uniform.

[0040] The present utility model covers any substitutions, modifications, equivalent methods, and solutions made within the essence and scope of the present utility model. To enable the public to have a thorough understanding of the present utility model, specific details have been described in detail in the above preferred embodiments of the present utility model. However, those skilled in the art can fully understand the present utility model even without these detailed descriptions. Additionally, to avoid unnecessary confusion to the essence of the present utility model, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0041] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A holding furnace with adjustable internal pressure, characterized in that: include: The insulation furnace body (1) is placed on a mounting frame (5); A sealing cover (2) is arranged on the insulation furnace body (1); the inner side of the sealing cover (2) is wavy; the sealing cover (2) is divided into an inner layer (203), an intermediate layer (202) and an outer layer (201); the inner layer (203) is made of a light alloy, the intermediate layer (202) is made of graphite, and the outer layer (201) is made of a ceramic material.

2. The holding furnace with adjustable internal pressure according to claim 1, characterized in that: The heat-insulating furnace body (1) is divided into an outer shell (101) and an inner shell (103); the outer shell (101) is made of a high-temperature resistant material, and the inner shell (103) is made of a high-efficiency heat-insulating material; an air layer (102) is formed between the outer shell (101) and the inner shell (103).

3. The holding furnace with adjustable internal pressure according to claim 1, characterized in that: Also includes: A sensor (4) is mounted on the sealing cover (2).

4. The holding furnace with adjustable internal pressure according to claim 3, characterized in that: Also includes: A support member (7) mounted on the insulation furnace body (1); A pressure regulating pump (6) is mounted on the support member (7), and the pressure regulating pump (6) is connected to the insulation furnace body (1).

5. The holding furnace with adjustable internal pressure according to claim 1, characterized in that: The sealing cover (2) is provided with a sealing strip, and the insulation furnace body (1) is in the shape of a truncated cone.

6. The holding furnace with adjustable internal pressure according to claim 1, characterized in that: Also includes: A stirring portion (3) is sealingly arranged on the sealing cover (2), and the stirring portion (3) comprises: A driving member (301); A rotating member (302) mounted on the driving member (301); The stirring blade (303) is mounted on the rotating member (302).

7. The holding furnace with adjustable internal pressure according to claim 1, characterized in that: Also includes: A controller (8) is mounted on the insulation furnace body (1), and the controller (8) comprises a display screen and control buttons.

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