Heat preservation structure of vacuum melting furnace for metal melting

Abstract

The utility model discloses a heat preservation structure of a vacuum smelting furnace for metal smelting, which comprises a heat preservation layer and a heat preservation cylinder filled with the heat preservation layer which are sequentially arranged on the outer wall of a smelting cylinder, and a self-recovery structure of the heat preservation layer under the high temperature action of the smelting furnace is arranged on the heat preservation cylinder. The self-recovery structure is vent holes evenly distributed in the side wall of the heat preservation cylinder. According to the heat preservation structure, loss of energy consumption in the smelting process can be effectively reduced through the heat preservation layer, then waste of the energy consumption is reduced, and the consumption of the energy consumption in the smelting process is reduced. The self-recovery structure can discharge condensate water from the heat preservation layer after the heat preservation layer generates condensate water at high temperature, so that the problem that the heat preservation effect of the heat preservation layer is affected due to shrinkage and hardening of the heat preservation layer is solved, the defect that energy consumption is increased again is overcome, meanwhile, a good heat preservation effect can be guaranteed during subsequent metal smelting again, and the service life of the heat preservation layer is prolonged. The energy consumption of the furnace body is reduced.

Description

Technical Field

[0001] This application relates to the technical field of metal smelting, and particularly relates to a heat preservation structure for a vacuum melting furnace used in metal smelting. Background Art

[0002] A vacuum melting furnace is an advanced device for melting materials in a vacuum environment. By creating a high-vacuum environment in the furnace chamber, the influence of air and other impurities on the melting process is excluded, thereby ensuring that the melted materials have higher purity and more uniform composition. During the melting process, the temperature in the furnace chamber rapidly rises through heating elements (such as resistance wires or induction coils), causing the metal materials to reach the melting point and start melting. At the same time, a vacuum pump continuously removes the gas in the furnace chamber to maintain the vacuum state in the furnace. This high-vacuum environment helps to reduce the oxidation and volatilization of metal materials, improving the melting efficiency and quality.

[0003] The structure of the currently used vacuum melting furnace is as Figure 1 shown, including a melting cylinder and a top cover. When performing metal melting, the metal raw materials are loaded into the melting cylinder, and the top cover is used to seal the melting cylinder, thus realizing the metal melting operation. Currently, during metal melting, the melting time is usually relatively long, so the melting furnace has relatively high working energy consumption. Moreover, due to the heat dissipation through the melting cylinder, the power consumption during metal melting is further increased, resulting in a waste of energy. Summary of the Invention

[0004] In view of the above problems, this application aims to provide a heat preservation structure for a vacuum melting furnace used in metal smelting, which can effectively reduce the loss of energy during the melting process, thereby reducing the waste of energy and decreasing the energy consumption during the melting process.

[0005] To achieve the above object, the technical solution adopted in this application is as follows: A heat preservation structure for a vacuum melting furnace used in metal smelting, the melting furnace includes a melting cylinder and a top cover, and is characterized in that: the heat preservation structure includes a heat preservation layer sequentially arranged on the outer wall of the melting cylinder and a heat preservation cylinder filled with the heat preservation layer, and a self-recovery structure of the heat preservation layer under the high temperature of the melting furnace is arranged on the heat preservation cylinder.

[0006] Preferably, the self-recovery structure is air holes uniformly arranged on the side wall of the heat preservation cylinder.

[0007] Preferably, an adjustment cylinder is also sleeved on the outside of the heat preservation cylinder in a vertically movable manner, and adjustment holes are uniformly arranged on the side wall of the adjustment cylinder and are vertically offset from each of the air holes.

[0008] Preferably, the distance between adjacent air holes is greater than the diameter of a single air hole.

[0009] Preferably, pins for positioning the heat preservation cylinder are inserted through the upper and lower sides of the adjustment cylinder.

[0010] The beneficial effects of the present application are as follows: Through the heat-insulating layer, the heat loss during the smelting process can be effectively reduced, thereby reducing the waste of energy consumption and the amount of energy consumption during the smelting process.

[0011] The self-recovery structure can solve the problem that when condensate water is generated in the heat-insulating layer due to high temperature, the condensate water can be discharged from the heat-insulating layer, thereby avoiding the problem that the heat-insulating layer shrinks and hardens and affects its heat-insulating effect, as well as solving the drawback of increased energy consumption again. At the same time, when metal smelting is carried out again later, it can also ensure a good heat-insulating effect and reduce the energy consumption of the furnace body. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the current structure of the smelting furnace.

[0013] Figure 2 It is a schematic diagram of the structure of the heat-insulating layer and the heat-insulating cylinder provided in the present application.

[0014] Figure 3 For the present application Figure 2 An enlarged schematic diagram of the structure at position A.

[0015] Figure 4 It is a schematic diagram of the shrinkage process of the heat-insulating layer of the present application after being invaded by high-temperature condensate water.

[0016] Figure 5 It is a side view of the vent hole opened on the heat-insulating cylinder of the present application.

[0017] Figure 6 It is a front view of the vent hole opened on the heat-insulating cylinder of the present application.

[0018] Figure 7 It is a schematic diagram of the adjusting cylinder structure of the present application.

[0019] Figure 8 It is a schematic diagram of the structure of the adjusting sleeve sleeved on the heat-insulating cylinder of the present application. Detailed Embodiments

[0020] In order to enable those of ordinary skill in the art to better understand the technical solutions of the present application, the technical solutions of the present application will be further described below with reference to the drawings and embodiments.

[0021] Refer to the attached Figures 1-8A heat preservation structure for a vacuum melting furnace used in metal melting is shown. The melting furnace includes a melting cylinder 1 and a top cover 2. When performing metal melting, the metal raw materials are loaded into the melting cylinder 1, and the top cover 2 is used to seal the melting cylinder 1, then the metal melting operation can be realized. Currently, when performing metal melting, the melting time is usually relatively long. Therefore, the melting furnace has relatively high working energy consumption. And due to the heat dissipation through the wall of the melting cylinder 1, the power consumption during metal melting is further increased, and at the same time, energy consumption waste is caused. Therefore, in order to reduce the energy consumption and energy consumption waste during metal melting, this application is provided with a heat preservation structure, which includes a heat preservation layer 3 (preferably heat preservation cotton) sequentially arranged on the outer wall of the melting cylinder 1 and a heat preservation cylinder 4 filled with the heat preservation layer 3. The heat preservation layer 3 is filled in the cavity between the heat preservation cylinder 4 and the outer wall of the melting cylinder 1. Through the heat preservation layer 3, the loss of energy consumption during the melting process is reduced, thereby reducing the waste of energy consumption and reducing the amount of energy consumption during the melting process.

[0022] During the melting process, if the temperature difference between the external environment and the inside of the melting furnace is relatively large, condensed water will be generated on the inner wall of the cavity between the closed heat preservation cylinder 4 and the melting cylinder 1. After this condensed water comes into contact with the heat preservation layer 3, it will penetrate into the heat preservation layer 3. After the heat preservation layer 3 is soaked in water, there will be defects such as hardening and shrinkage ( Figure 4 as shown by the arrow in the left attached figure), which will cause the heat preservation layer 3 to not completely fill the cavity between the heat preservation cylinder 4 and the melting cylinder 1 ( Figure 4 as shown in the state on the right), resulting in a decrease in the heat preservation effect, an increase in energy consumption again, and in subsequent melting, the heat preservation effect of the heat preservation layer 3 still cannot be effectively guaranteed. Therefore, in order to solve this problem, a self-recovery structure for the heat preservation layer 3 under the high temperature of the melting furnace is provided on the heat preservation cylinder 4. This self-recovery structure can also solve the problem that when the heat preservation layer 3 is affected by high temperature to generate condensed water, the condensed water can be discharged from the heat preservation layer 3, thereby avoiding the problem that the heat preservation layer 3 shrinks and hardens and affects its heat preservation effect, and solving the drawback of increased energy consumption again. At the same time, when metal melting is carried out again subsequently, a good heat preservation effect can also be guaranteed, and the energy consumption of the furnace body can be reduced.

[0023] Specifically, as Figures 5-6 shown, the self-recovery structure is ventilation holes 4a uniformly arranged on the side wall of the heat preservation cylinder 4. These ventilation holes 4a can dissipate a certain amount of heat generated in the cavity between the heat preservation cylinder 4 and the outer wall of the melting cylinder 1, thereby avoiding the generation of condensed water in this cavity, keeping the heat preservation layer 3 in a dry state, and completely filling the cavity, achieving an effective heat preservation effect on the furnace body, avoiding an increase in energy consumption, and having the same heat preservation effect in subsequent melting.

[0024] During the melting process, in order to avoid the problem of increased energy consumption caused by heat dissipation from the ventilation holes 4a, as Figures 7-8As shown in the figure, an adjusting cylinder 5 is also sleeved on the outside of the heat preservation cylinder 4 in a vertically movable manner. Adjusting holes 5a are evenly distributed on the side wall of the adjusting cylinder 5 and are vertically offset from each of the air vent holes 4a. During a single metal melting process, by moving the adjusting cylinder 5 upward, the adjusting holes 5a block the air vent holes 4a, thereby avoiding heat loss through the air vent holes 4a during the melting process and ensuring an effective heat preservation effect. After the melting is completed, the adjusting cylinder 5 is moved downward, so that the adjusting holes 5a are misaligned with the air vent holes 4a, exposing the air vent holes, and external air enters the cavity, realizing self-drying of the heat preservation layer 3, enabling the heat preservation layer 3 to still be fully filled in the cavity, and still having a good heat preservation effect during subsequent melting processes.

[0025] Preferably, as Figure 6 shown, the distance between adjacent air vent holes 4a is greater than the diameter of a single air vent hole 4a. That is, the part of the adjusting cylinder 5 between adjacent adjusting holes 5a can completely block the air vent holes 4a, avoiding the problem of incomplete blocking and affecting the heat preservation effect.

[0026] To achieve rapid positioning of the adjusting cylinder 5 during up and down adjustment, as Figure 8 shown, a pin 6 for positioning with the heat preservation cylinder 4 is inserted through the upper and lower sides of the adjusting cylinder 5. Similarly, corresponding pin holes (not shown in the figure) are provided on the heat preservation cylinder 4. After the heat preservation cylinder 4 is adjusted up and down, the adjusting cylinder 5 can be quickly positioned through the pin 6, realizing the blocking and exposure of the air vent holes 4a.

[0027] The principle of this application is: a heat preservation layer 3, a heat preservation cylinder 4 and an adjusting cylinder 5 are sequentially arranged on the outer wall of the melting cylinder 1, and air vent holes 4a and adjusting holes 5a which are misaligned with each other are evenly distributed on the heat preservation cylinder 4 and the adjusting cylinder 5. When metal melting is carried out, the adjusting cylinder 5 is moved upward, so that the adjusting holes 5a are misaligned with the air vent holes 4a, blocking the air vent holes 4a, enabling the heat preservation layer 3 to achieve an effective heat preservation effect on the furnace body. After the melting is completed, the adjusting cylinder 5 is moved downward, so that the adjusting holes 5a correspond to the air vent holes 4a, thereby dissipating the heat in the cavity and enabling the heat preservation layer 3 to dry itself, so as to be completely filled in the cavity.

[0028] The above shows and describes the basic principle, main features and advantages of this application. Without departing from the spirit and scope of this application, this application will also have various changes and improvements, and these changes and improvements all fall within the scope of this application claimed.

Claims

1. A heat preservation structure for a vacuum melting furnace used in metal melting. The melting furnace includes a melting cylinder (1) and a top cover (2), and is characterized in that: The heat preservation structure includes a heat preservation layer (3) and a heat preservation cylinder (4) filled with the heat preservation layer (3) which are sequentially arranged on the outer wall of the melting cylinder (1). A self-recovery structure of the heat preservation layer (3) under the high temperature action of the melting furnace is arranged on the heat preservation cylinder (4), and the self-recovery structure is air holes (4a) uniformly arranged on the side wall of the heat preservation cylinder (4).

2. The thermal insulation structure according to claim 1, wherein: An adjusting cylinder (5) is also sleeved on the outside of the heat preservation cylinder (4) in a vertically movable manner, and adjusting holes (5a) which are vertically offset from each of the air holes (4a) are uniformly arranged on the side wall of the adjusting cylinder (5).

3. The thermal insulation structure according to claim 2, characterized in that: The distance between adjacent air holes (4a) is greater than the aperture of a single air hole (4a).

4. The thermal insulation structure according to claim 3, characterized in that: Pins (6) for positioning the heat preservation cylinder (4) are inserted through the upper and lower sides of the adjusting cylinder (5).

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