Vertical vacuum tube furnace

Abstract

The utility model relates to the technical field of tube furnaces, and solves the problem that cold water directly rings the side wall of a hearth, so that local temperature is reduced too quickly, and a high-temperature furnace tube bursts after shock cooling. The vertical vacuum tube furnace comprises a furnace box and a hearth, the hearth is installed in the furnace box, a cooling assembly is arranged in the furnace box, a cooling channel used for containing the cooling assembly is formed in the furnace box, and the cooling channel and the cooling assembly in the furnace box extend into the cooling channel and are attached to the hearth. The cooling assembly comprises an outer-layer cooling pipe and an inner-layer cooling pipe, the surrounding diameter of the outer-layer cooling pipe is larger than that of the inner-layer cooling pipe, the surrounding diameter of the inner-layer cooling pipe is larger than that of the hearth, the diameter of the outer-layer cooling pipe is larger than that of the inner-layer cooling pipe, and the outer-layer cooling pipe is arranged in a bow-shaped ring shape. The outer-layer cooling pipe comprises outer-layer water passing pipes which are horizontally installed at equal intervals, and a loopback pipe is installed at the single end of each outer-layer water passing pipe and used for being connected with the adjacent outer-layer water passing pipes to form a water passing channel for water flow circulation.

Description

Technical Field

[0001] The utility model relates to the technical field of tube furnaces, in particular to a vertical vacuum tube furnace. Background Art

[0002] A vacuum tube furnace disclosed in publication number CN214620629U includes a vacuum device, a base, a cooling device, a tube furnace device and a control device. The lower surface of the vacuum pump is connected to the upper surface of the base, one end of the first air inlet pipe is connected to the outer surface of the vacuum pump, one end of the second air inlet pipe is connected to the other end of the intermediate pipe, the upper surface of the operating table is welded to the lower surface of the lower box, and the lower box is hinged to the upper box.

[0003] It can quickly cool the inside of the quartz tube to reach a predetermined temperature, which can improve the efficiency of the tube furnace and reduce waiting time.

[0004] However, rapid cooling should be avoided as much as possible when the furnace tubes are in use to prevent the high-temperature furnace tubes from bursting after sudden cooling. This solution does not provide high protection for the furnace tubes. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a vertical vacuum tube furnace, which solves the problem that the local temperature drops too quickly due to the direct impact of cold water on the side wall of the furnace, resulting in the high-temperature furnace tube bursting after sudden cooling.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vertical vacuum tube furnace, comprising a furnace box and a furnace chamber, wherein the furnace chamber is installed in the furnace box and a cooling component is arranged in the furnace box, and a cooling channel for placing the cooling component is formed in the furnace box, and the cooling component in the furnace box extends in the cooling channel and fits the furnace chamber.

[0007] In a specific embodiment, the cooling assembly includes an outer cooling tube and an inner cooling tube, the outer cooling tube has a larger diameter than the inner cooling tube, and the inner cooling tube has a larger diameter than the furnace;

[0008] The outer cooling tube has a larger diameter than the inner cooling tube;

[0009] The outer cooling pipe is arranged in a bow-shaped loop shape, and includes outer water pipes installed equidistantly and horizontally, and a loop pipe is installed on a single end of the outer water pipe to connect adjacent outer water pipes to form a water channel for water flow.

[0010] In a specific embodiment, the inner cooling pipe includes an inner water pipe and a connecting ring pipe connected with the inner water pipe to form a return water channel. The distance between adjacent inner water pipes is smaller than the distance between adjacent outer water pipes to achieve fast water flow and slow water return for slow cooling.

[0011] In a specific embodiment, a water supply channel and a water return channel are provided on the furnace box structure. The water supply channel and the water return channel are located on the same horizontal line and on opposite structural side walls.

[0012] In a specific embodiment, extended water pipes are installed in the water supply channel and the water return channel. The extended water pipes extend along the water supply channel and the water stop channel and are respectively connected to the outer water pipe and the inner water pipe. The diameter of the extended water pipe is larger than the diameter of the outer water pipe to ensure sufficient water supply. Connecting pipes are connected between the extended water pipe and the outer water pipe and the inner water pipe to compensate for the diameter difference.

[0013] In a specific embodiment, the front and rear ends of the furnace are surrounded by cooling components, and the two cooling components are centrally symmetrical to establish a state in which the water supply direction and the water return direction are opposite.

[0014] Compared with the prior art, the utility model provides a vertical vacuum tube furnace, which has the following beneficial effects:

[0015] In the technical solution disclosed by the utility model, a layered cooling component is used. When entering the cooling area opposite to the furnace, the temperature of the cooling area is firstly lowered to make the temperature of the outer wall of the furnace drop to the same temperature. After that, cold water passes through the outer water pipe and then the inner water pipe passes water close to the furnace arm, thereby gradually reducing the temperature inside the furnace and enhancing the stability of the furnace tube.

[0016] The return water channel and the water flow channel arranged by the utility model are on the same horizontal line, and the return water channel of the cooling assembly at a single end of the furnace is located below, while the return water channel at the other end is located above, thereby forming two return water channels with different water flow return directions in the furnace, one end returns downward and the other end returns upward, thereby producing a double cooling effect on the cooling of the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the furnace structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the cooling assembly structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the water supply channel and the water return channel of the utility model.

[0022] In the figure: 1. furnace box; 2. furnace; 3. cooling assembly; 31. outer cooling pipe; 311. outer water pipe; 312. loop pipe; 32. inner cooling pipe; 321. inner water pipe; 322. connecting ring pipe; 4. cooling channel; 5. water supply channel; 6. return water channel; 7. extension water pipe; 8. connecting pipe. DETAILED DESCRIPTION

[0023] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Figure 1-Figure 4 An embodiment of the utility model is a vertical vacuum tube furnace, comprising a furnace box 1 and a furnace chamber 2, wherein the furnace chamber 2 is installed in the furnace box 1 and a cooling assembly 3 is provided in the furnace box 1, and a cooling channel 4 for placing the cooling assembly 3 is formed in the furnace box 1, and the cooling assembly 3 in the furnace box 1 extends in the cooling channel 4 and fits the furnace chamber 2.

[0026] The specific problem addressed by this specific embodiment is to solve the problem that the local temperature drops too fast due to the cold water directly hitting the side wall of the furnace 2, causing the high-temperature furnace tube to burst after being suddenly cooled. The utility model uses a layered cooling component 3 to first cool the temperature of the cooling area relative to the furnace 2 when it first enters the cooling area, so that the temperature of the outer wall of the furnace 2 drops to the same temperature, and then the cold water passes through the outer water pipe 311 and the inner water pipe 321 close to the arm of the furnace 2, thereby gradually reducing the temperature in the furnace 2 and enhancing the stability of the furnace tube.

[0027] The front and rear ends of the furnace 2 are surrounded by cooling components 3, and the two cooling components 3 are centrally symmetrical to establish a state in which the water supply direction and the water return direction are opposite.

[0028] The cooling assembly 3 includes an outer cooling tube 31 and an inner cooling tube 32. The outer cooling tube 31 has a larger diameter than the inner cooling tube 32. The inner cooling tube 32 has a larger diameter than the furnace 2. The outer cooling tube 31 has a larger diameter than the inner cooling tube 32. A bushing is connected between the outer cooling tube 31 and the inner cooling tube 32. The outer cooling tube 31 is arranged in a bow-shaped loop. The outer cooling tube 31 includes an outer water pipe 3 installed horizontally at equal intervals. 11. A return pipe 312 is installed on a single end of the outer water pipe 311 to connect the adjacent outer water pipes 311 to form a water passage for water flow. In this specific embodiment, the inner cooling pipe 32 includes an inner water pipe 321 and a connecting ring pipe 322 connected with the inner water pipe 321 to form a return water passage. The distance between adjacent inner water pipes 321 is smaller than the distance between adjacent outer water pipes 311 to achieve fast water flow and slow return water for slow cooling. The return water passage is on the same horizontal line as the water passage, and the return water passage of the cooling assembly 3 at a single end of the furnace 2 is located below, while the return water passage at the other end is located above, thereby forming different water return directions formed by the two return water passages in the furnace 2, with one end returning downward and the other end returning upward, thereby producing a double cooling effect for the cooling of the furnace 2.

[0029] In this specific embodiment, an upper water channel 5 and a return water channel 6 are opened on the furnace box 1 structure. The upper water channel 5 and the return water channel are located on the same horizontal line and on opposite structural side walls. Extended water pipes 7 are installed in the upper water channel 5 and the return water channel. The extended water pipes 7 extend along the upper water channel 5 and the water stop channel and are respectively connected to the outer water pipe 311 and the inner water pipe 321. The diameter of the extended water pipe 7 is larger than the diameter of the outer water pipe 311 to ensure sufficient water supply. A connecting pipe 8 is connected between the extended water pipe 7 and the outer water pipe 311 and the inner water pipe 321 to compensate for the diameter difference.

[0030] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0031] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vertical vacuum tube furnace, comprising a furnace box (1) and a furnace chamber (2), characterized in that: The furnace (2) is installed in a furnace box (1) and a cooling component (3) is arranged in the furnace box (1), and a cooling channel (4) for placing the cooling component (3) is formed in the furnace box (1), and the cooling component (3) in the furnace box (1) extends into the cooling channel (4) and fits the furnace (2); The cooling assembly (3) comprises an outer cooling tube (31) and an inner cooling tube (32); the outer cooling tube (31) has a larger diameter than the inner cooling tube (32); and the inner cooling tube (32) has a larger diameter than the furnace (2); The outer cooling tube (31) has a larger diameter than the inner cooling tube (32); The outer cooling pipe (31) is arranged in a bow-shaped loop shape, and comprises outer water pipes (311) which are equidistantly and horizontally installed. A loop pipe (312) is installed on a single end of the outer water pipe (311) for connecting adjacent outer water pipes (311) to form a water passage for water flow.

2. A vertical vacuum tube furnace according to claim 1, characterized in that: The inner cooling pipe (32) comprises an inner water pipe (321) and a connecting ring pipe (322) connected to the inner water pipe (321) to form a water return channel. The spacing between adjacent inner water pipes (321) is smaller than the spacing between adjacent outer water pipes (311) so as to achieve fast water flow and slow water return for slow cooling.

3. A vertical vacuum tube furnace according to claim 1, characterized in that: The furnace box (1) structure is provided with an upper water channel (5) and a return water channel (6), wherein the upper water channel (5) and the return water channel are located on the same horizontal line and on opposite structural side walls.

4. A vertical vacuum tube furnace according to claim 3, characterized in that: An extension water pipe (7) is installed in both the water supply channel (5) and the water return channel. The extension water pipe (7) extends along the water supply channel (5) and the water stop channel and is connected to the outer water pipe (311) and the inner water pipe (321) respectively. The diameter of the extension water pipe (7) is larger than the diameter of the outer water pipe (311) to ensure sufficient water supply. A connection pipe (8) is connected between the extension water pipe (7) and the outer water pipe (311) and the inner water pipe (321) to make up for the diameter difference.

5. A vertical vacuum tube furnace according to claim 1, characterized in that: The front and rear ends of the furnace (2) are both surrounded by cooling components (3), and the two cooling components (3) are centrally symmetrical to establish a state in which the water supply direction and the water return direction are opposite.

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