Cooling structure of sintering furnace

Abstract

The invention discloses a sintering furnace cooling structure, relates to the technical field of sintering furnaces, and solves the problems of long cooling time and limited working efficiency of an existing sintering furnace cooling structure. And in addition, the defects that energy consumption is high and the waste heat utilization efficiency of the sintering furnace is insufficient are further caused. Comprising a shell arranged on a sintering furnace body, and the shell is divided into a first cavity, a middle body and a second cavity; wherein turbine blades are rotationally arranged in the first cavity, a turbine exhaust port of the first cavity is connected with a cooling air pipe, and the other end of the cooling air pipe is connected to the sintering furnace body; a compression pump wheel connected with turbine blades through a linkage shaft is arranged in the second cavity, and the compression pump wheel sucks gas under the synchronous rotation of the turbine blades; by combining the circulating water cooling technology and the air cooling technology, double guarantee of uniformity and rapidity of sample cooling is achieved, the time needed by cooling is greatly shortened, and therefore the overall efficiency of cooling is remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sintering furnaces, and in particular relates to a cooling structure of a sintering furnace. Background Art

[0002] The sintering furnace makes the solid particles of the ceramic green body bond to each other at high temperature, the grains grow, the gaps (pores) and grain boundaries gradually decrease, and through the transfer of substances, its total volume shrinks, the density increases, and finally becomes a dense polycrystalline sintered body with a certain microstructure. It is widely used in powder metallurgy, ceramics, composite materials and other fields to dry the slurry on silicon wafers, remove organic components in the slurry, and complete the aluminum back field and grid line sintering processes.

[0003] At present, after the sintering process is completed, the high temperature inside the sintering furnace dissipates slowly, so it is usually necessary to rely on a special rapid cooling device to accelerate the cooling process. Most of the existing sintering furnace cooling structures on the market only use a single circulating water cooling or air cooling method; Although this method can achieve rapid cooling of high-temperature sintered materials, it has the problems of long cooling time and limited work efficiency. In addition, this single cooling method also leads to the disadvantages of high energy consumption and insufficient utilization efficiency of sintering furnace waste heat. Therefore, based on the above problems, a sintering furnace cooling structure is proposed. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a sintering furnace cooling structure, which solves the problems of the existing sintering furnace cooling structure, such as long cooling time and limited working efficiency. In addition, it also leads to the technical problems of high energy consumption and insufficient efficiency of waste heat utilization of the sintering furnace.

[0005] To achieve the above object, a sintering furnace cooling structure is provided according to an embodiment of the first aspect of the present invention, comprising a shell, which is arranged on a sintering furnace body, and the shell is divided into a cavity 1, an intermediate body and a cavity 2; Wherein, a turbine blade is rotatably arranged in the cavity one, a cooling air duct is connected to the turbine exhaust port of the cavity one, and the other end of the cooling air duct is respectively connected to the furnace body of the sintering furnace; The second cavity is provided with a compressor wheel connected to the turbine blades through a linkage shaft, and the compressor wheel inhales gas under the synchronous rotation of the turbine blades. The pump wheel air inlet of the second cavity is connected to an air inlet pipe whose other end is connected to the sintering furnace body; It also includes: a recycling component, the recycling component includes a water tank 1 and a water tank 2 arranged in the elevated base, a cold and heat exchange pipe arranged on the water tank 1, a cooling flow channel arranged between the inner wall and the outer wall of the sintering furnace body, and an air guide cover arranged on the side of the water tank 2, the air guide cover is provided with an air guide pipe connected to the turbine air inlet on the other side; The air supply component is used to provide a power wind source for the cavity 1 of the shell.

[0006] A further improvement is that the cooling air duct is arranged in a U-shape along the outer wall of the sintering furnace body, and ventilation branches are equidistantly arranged on the inner wall of the cooling air duct. The other end of each ventilation branch penetrates into the inner body of the sintering furnace and is connected to a cooling air hood at the end. The cooling air duct is equidistantly provided with support frames, and each support frame is respectively mounted on the outer wall of the sintering furnace body by fixing bolts.

[0007] A further improvement is that the linkage shaft is arranged to rotate transversely in the intermediate body, and its two ends respectively penetrate into the cavity one and the cavity two, and the turbine blades and the compressor pump wheel are respectively sleeved on the two ends of the linkage shaft.

[0008] A further improvement is that a heat dissipation port is provided on the top surface of the sintering furnace body, a heat dissipation cover is provided inside the heat dissipation port, and the other end of the air inlet pipe is connected to the top surface of the heat dissipation cover.

[0009] A further improvement is that the cooling channel is divided into several sections from top to bottom, each section is arranged in a U-shape, and each end of the cooling channel is connected as a whole.

[0010] A further improvement is that the heat exchange tube is divided into an insulation section, a heat exchange section and a lead-out section, the insulation section of the heat exchange tube passes through water tank one and is connected to the pump wheel exhaust port of cavity two, and the heat exchange section of the heat exchange tube is spirally arranged in water tank one.

[0011] A further improvement is that a plurality of ventilation slots are provided on the top surface of the second water storage tank.

[0012] A further improvement is that a raised base is provided on the bottom surface of the sintering furnace body, and the air supply assembly includes a base connected to the side of the raised base, a blower connected to the surface of the base, and an air supply pipeline connected to the output end of the blower and the other end of which is connected to the turbine air inlet of the cavity.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention starts the blower to blow air toward the turbine air inlet of cavity one, impacting the turbine blades at a high speed at a specific angle, thereby driving the turbine blades to rotate at a high speed. Under the action of the turbine blades, a portion of the air volume quickly enters the cooling air duct from the turbine exhaust port, and is directly blown toward the sample through the evenly distributed cooling air hood, ensuring that the sample can be cooled evenly and quickly. At the same time, the water pump in water tank two starts to work, pumps out the cooling water and sends it into the spiral cooling channel through the injection pipeline. The cooling water flows in the cooling channel, exchanges heat with the inner wall of the sintering furnace, takes away the heat, and returns to water tank two through the reflux pipeline. This process cooperates with the work of the blower, significantly shortens the cooling time, and improves the cooling efficiency.

[0014] (2) The present invention adopts the above-mentioned design, and the compressor wheel in the second cavity inhales gas under the synchronous rotation of the turbine blades in the first cavity, so that a part of the air volume is quickly introduced into the air duct and acts on the cooling water in the second water storage tank through the air duct cover. In this way, the heat is discharged by the ventilation slot, and the cooling water is cooled synchronously, which ensures the continuous cooling effect of the cooling water and realizes the recycling. When the turbine blades rotate, the compressor wheel is driven by the linkage shaft to rotate synchronously to inhale air. In this way, the high-temperature heat in the sintering furnace is sucked into the air intake pipe through the heat dissipation cover, and after being compressed by the compressor wheel, it is sent to the cold and heat exchange pipe. Then, the heat loss is reduced by the heat preservation section of the cold and heat exchange pipe, thereby improving the utilization efficiency of waste heat. At the same time, the cold and heat exchange section of the cold and heat exchange pipe is spirally arranged in the first water storage tank, and fully exchanges heat with the cold water in the first water storage tank, heats the cold water in the first water storage tank, and realizes the utilization of waste heat. This design of the present invention not only effectively reduces energy consumption, but also significantly improves the utilization efficiency of waste heat of the sintering furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The present invention Figure 1 The enlarged structural diagram at A in the middle; Figure 3 It is a schematic diagram of the structure of the cold and heat exchange tube of the present invention; Figure 4 It is a schematic diagram of the structure of the cooling air duct of the present invention being arranged around the sintering furnace from a top view; Figure 5 It is a schematic diagram of the cross-section of the shell of the present invention; Figure 6 It is a schematic diagram of the cross-sectional top view of the sintering furnace and the uppermost single cooling channel of the present invention; Figure 7 It is a schematic diagram of the cross-sectional top view of the sintering furnace and the single cooling channel at the bottom of the present invention.

[0016] Markings in the figure: 1. Recycling component; 11. Water storage tank 1; 12. Cold and heat exchange pipe; 121. Insulation section; 122. Cold and heat exchange section; 123. Export section; 13. Water storage tank 2; 14. Air guide cover; 15. Air guide pipe; 16. Ventilation slot; 101. Cooling channel; 2. Sintering furnace body; 21. Raising base; 201. Heat dissipation port; 202. Heat dissipation cover; 3. Shell; 31. Cavity 1; 311. Turbine air inlet; 312. Turbine exhaust; 32. Intermediate; 33. Cavity 2; 331. Pump air inlet; 332. Pump exhaust; 34. Cooling air duct; 341. Ventilation branch pipe; 342. Cooling air hood; 343. Support frame; 35. Inlet pipe; 301. Turbine blades; 302. Compressor wheel; 303. Linkage shaft; 4. Air supply assembly; 41. Air supply pipeline; 42. Blower; 43. Base. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1 like Figures 1 to 6 As shown, the sintering furnace cooling structure includes a shell 3, which is arranged on the sintering furnace body 2. The shell 3 is divided into a cavity 31. The bottom surface of the sintering furnace body 2 is provided with a raised base 21; Specifically, a turbine blade 301 is rotatably arranged in the cavity 1 31, a turbine air inlet 311 and a turbine exhaust port 312 are arranged on the cavity 1 31, a cooling air duct 34 is connected to the turbine exhaust port 312 of the cavity 1 31, and the other end of the cooling air duct 34 is connected to the sintering furnace body 2; The cooling air duct 34 is arranged in a U-shape along the outer wall of the sintering furnace body 2, and ventilation branch pipes 341 are arranged equidistantly on the inner wall of the cooling air duct 34. The other end of each ventilation branch pipe 341 penetrates into the sintering furnace body 2, and is connected to a cooling air cover 342 at the end, so that cold air can be evenly and directly blown to the sample, thereby ensuring that the sample can be cooled evenly and quickly; the cooling air duct 34 is equidistantly sleeved with lining brackets 343, and each lining bracket 343 is respectively installed on the outer wall of the sintering furnace body 2 by fixing bolts, and is used for installation support of the cooling air duct 34; like Figure 1As shown, the air supply assembly 4 specifically includes: a base 43 connected to the side of the elevated base 21, a blower 42 connected to the surface of the base 43, and an air supply pipeline 41 connected to the output end of the blower 42 and the other end of which is connected to the turbine air inlet 311 of the cavity 31. By starting the blower 42, the blower 42 blows air to the turbine air inlet 311 of the cavity 31, and impacts the turbine blades 301 at a specific angle and high speed, thereby driving the turbine blades 301 to rotate at a high speed. Under the action of the turbine blades 301, a part of the air volume quickly enters the cooling air duct 34 from the turbine exhaust port 312, and is directly blown to the sample through the evenly distributed cooling air hood 342, ensuring that the sample can be cooled evenly and quickly; like Figure 1 , Figure 6 and Figure 7 As shown, this embodiment also provides an implementation scheme, including a recycling component 1, a cooling channel 101 is arranged between the inner wall and the outer wall of the sintering furnace body 2, and the cooling channel 101 is divided into several sections from top to bottom, each section is arranged in a U-shaped surround, and each section end of the cooling channel 101 is connected to one body, such as Figure 6 The figure shows a single flow channel, the inlet is located at the uppermost flow channel, the outlet is located at the lowermost flow channel, a water storage tank 11 is arranged on one side of the raised base 21, and a cold and heat exchange pipe 12 is connected to the water storage tank 11; It should be noted that before implementation, a pump group 1 is respectively configured in the water tank 11. Among them, the injection pipeline of the pump group 1 is connected to the cooling channel 101, and the return pipeline is connected to the water tank 11, so as to form a whole pumping reflux system for coordinated use. By starting the water pump in the water tank 2 13 to start working, the cooling water is pumped out and sent into the spiral cooling channel 101 through the injection pipeline. The cooling water flows in the cooling channel 101, exchanges heat with the inner wall of the sintering furnace, takes away the heat and returns to the water tank 2 13 through the return pipeline. This process cooperates with the work of the blower 42, which significantly shortens the cooling time and improves the cooling efficiency; Specifically, as a preferred implementation scheme, a water tank 2 13 is arranged on the other side of the elevated base 21, a wind guide cover 14 is arranged on the side of the water tank 2 13, a wind guide duct 15 is arranged on the wind guide cover 14, and the other side of the wind guide duct 15 is connected to the turbine air inlet 311, and a plurality of ventilation slots 16 are opened on the top surface of the water tank 2 13. Under the action of the turbine blades 301, another part of the air volume is quickly introduced into the wind guide duct 15, and acts on the cooling water in the water tank 2 13 through the wind guide cover 14. In this way, the heat is discharged by the ventilation slots 16, the cooling water is cooled synchronously, the continuous cooling effect of the cooling water is ensured, and the recycling is realized.

[0019] Example 2 This embodiment, based on Embodiment 1, specifically includes the following: like Figure 2 , Figure 3 and Figure 5 As shown, the shell 3 is further divided into an intermediate body 32 and a second cavity 33, the second cavity 33 is provided with a pump wheel air inlet 331 and a pump wheel exhaust port 332, the pump wheel air inlet 331 of the second cavity 33 is connected with an air inlet pipe 35, the other end of the air inlet pipe 35 is connected to the sintering furnace body 2, a compressor wheel 302 is provided in the second cavity 33, a linkage shaft 303 is rotatably provided in the intermediate body 32, the two ends of the linkage shaft 303 are respectively inserted into the first cavity 31 and the second cavity 33, and the turbine blades 301 and the compressor wheel 302 are respectively sleeved on the two ends of the linkage shaft 303; Specifically, a heat dissipation port 201 is disposed on the top surface of the sintering furnace body 2, a heat dissipation cover 202 is disposed outside the heat dissipation port 201, and the other end of the air inlet pipe 35 is connected to the top surface of the heat dissipation cover 202; Specifically, the heat exchange tube 12 is divided into a heat preservation section 121, a heat exchange section 122 and a lead-out section 123. The heat preservation section 121 of the heat exchange tube 12 passes through the water storage tank 11 and is connected to the pump wheel exhaust port 332 of the cavity 2 33. The heat exchange section 122 of the heat exchange tube 12 is spirally arranged in the water storage tank 11. When the turbine blade 301 rotates, the compressor wheel 302 is driven to rotate synchronously through the linkage shaft 303 to inhale air. In this way, the high-temperature heat in the sintering furnace is sucked into the intake pipe 35 through the heat dissipation cover 202, and is sent to the heat exchange tube 12 after being compressed by the compressor wheel 302. Then, the heat loss is reduced through the heat preservation section 121 of the heat exchange tube 12, thereby improving the efficiency of waste heat utilization. At the same time, the heat exchange section 122 of the heat exchange tube 12 is spirally arranged in the water tank 11, and fully exchanges heat with the cold water in the water tank 11, heats the cold water in the water tank 11, and realizes the waste heat utilization.

[0020] like Figures 1 to 7 As shown, in this embodiment, the sintering furnace in the application document also includes a furnace door and other equipment components, which are selectively installed and used together before implementation. The actual size of each component of this embodiment is selected and installed before implementation according to the actual needs on site. This part is the prior art and the working principle has been disclosed. It should also be noted that the blower 42 selects high power to ensure the normal operation of the entire cooling system. In addition, it should be noted that this application document only addresses the problems of long cooling time and limited work efficiency in the existing sintering furnace cooling structure. In addition, it also leads to improvements in the shortcomings of high energy consumption and insufficient utilization efficiency of waste heat in the sintering furnace, and does not involve other aspects; the working principle of the sintering furnace cooling structure is introduced as follows: When the solution of the present invention is implemented, after the sintering process is completed, the blower 42 is first started. The blower 42 blows air to the turbine air inlet 311 of the cavity 1 31, and impacts the turbine blade 301 at a specific angle and high speed, thereby driving the turbine blade 301 to rotate at a high speed. Under the action of the turbine blade 301, a part of the air volume quickly enters the cooling air duct 34 from the turbine exhaust port 312, and is directly blown to the sample through the evenly distributed cooling air cover 342, ensuring that the sample can be cooled evenly and quickly.

[0021] At the same time, the pump in the water tank 13 starts working, pumping out cooling water and sending it into the spiral cooling channel 101 through the injection pipeline. The cooling water flows in the cooling channel 101, exchanges heat with the inner wall of the sintering furnace, takes away the heat and returns to the water tank 13 through the return pipeline. This process cooperates with the work of the blower 42, significantly shortens the cooling time, and improves the cooling efficiency.

[0022] In addition, a portion of the air volume is quickly introduced into the air guide duct 15, and acts on the cooling water in the water storage tank 13 through the air guide cover 14. In this way, the heat is discharged by the ventilation slots 16, achieving synchronous cooling of the cooling water, ensuring the continuous cooling effect of the cooling water, and achieving recycling.

[0023] Considering that the heat inside the sintering furnace is mainly concentrated on the top surface, when the turbine blades 301 rotate, the compressor wheel 302 is driven to rotate synchronously through the linkage shaft 303 to inhale air. In this way, the high-temperature heat in the sintering furnace is sucked into the intake pipe 35 through the heat dissipation cover 202, and is sent to the cold and heat exchange pipe 12 after being compressed by the compressor wheel 302. Next, the heat loss is reduced by the insulation section 121 of the cold and heat exchange pipe 12, thereby improving the efficiency of waste heat utilization. At the same time, the cold and heat exchange section 122 of the cold and heat exchange pipe 12 is spirally arranged in the water storage tank 11, and fully exchanges heat with the cold water in the water storage tank 11, heats the cold water in the water storage tank 11, and realizes the utilization of waste heat. This design of the present invention not only effectively reduces energy consumption, but also significantly improves the efficiency of waste heat utilization of the sintering furnace.

[0024] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. The sintering furnace cooling structure is characterized by: It comprises a shell (3) arranged on a sintering furnace body (2), wherein the shell (3) is divided into a first cavity (31), an intermediate body (32) and a second cavity (33); A turbine blade (301) is rotatably arranged in the cavity one (31), a cooling air duct (34) is connected to the turbine exhaust port (312) of the cavity one (31), and the other end of the cooling air duct (34) is respectively connected to the sintering furnace body (2); The second cavity (33) is provided with an air compressor wheel (302) connected to the turbine blades (301) via a linkage shaft (303), and the air compressor wheel (302) inhales gas under the synchronous rotation of the turbine blades (301). The air inlet (331) of the pump wheel of the second cavity (33) is connected to an air inlet pipe (35) whose other end is connected to the sintering furnace body (2); It also includes: a recycling component (1), the recycling component (1) including a water storage tank 1 (11) and a water storage tank 2 (13) arranged in a raised base (21), a cold and heat exchange pipe (12) arranged on the water storage tank 1 (11), a cooling flow channel (101) arranged between the inner wall and the outer wall of the sintering furnace body (2), and an air guide cover (14) arranged on the side of the water storage tank 2 (13), the air guide cover (14) being provided with an air guide pipe (15) connected to the turbine air inlet (311) on the other side; The air supply assembly (4) is used to provide a power wind source for cavity 1 (31) of the housing (3).

2. The sintering furnace cooling structure according to claim 1, characterized in that: The cooling air duct (34) is arranged in a U-shape along the outer wall of the sintering furnace body (2); ventilation branch pipes (341) are arranged at equal intervals on the inner wall of the cooling air duct (34); the other end of each ventilation branch pipe (341) penetrates into the sintering furnace body (2) and is connected to a cooling air hood (342) at the end; and lining brackets (343) are equidistantly sleeved on the cooling air duct (34); each lining bracket (343) is respectively mounted on the outer wall of the sintering furnace body (2) by fixing bolts.

3. The sintering furnace cooling structure according to claim 1, characterized in that: The linkage shaft (303) is disposed in a transversely rotatable manner in the intermediate body (32), with its two ends respectively penetrating into the first cavity (31) and the second cavity (33), and the turbine blades (301) and the compressor wheel (302) are respectively sleeved on the two ends of the linkage shaft (303).

4. The sintering furnace cooling structure according to claim 1, characterized in that: The top surface of the sintering furnace body (2) is provided with a heat dissipation port (201), a heat dissipation cover (202) is provided inside the heat dissipation port (201), and the other end of the air inlet pipe (35) is connected to the top surface of the heat dissipation cover (202).

5. The sintering furnace cooling structure according to claim 1, characterized in that: The cooling channel (101) is divided into a plurality of sections from top to bottom, each section is arranged in a U-shape, and each end of the cooling channel (101) is connected as a whole.

6. The sintering furnace cooling structure according to claim 1, characterized in that: The heat exchange tube (12) is divided into a heat preservation section (121), a heat exchange section (122) and an outlet section (123); the heat preservation section (121) of the heat exchange tube (12) passes through the water storage tank 1 (11) and is connected to the pump wheel exhaust port (332) of the cavity 2 (33); the heat exchange section (122) of the heat exchange tube (12) is spirally arranged in the water storage tank 1 (11).

7. The sintering furnace cooling structure according to claim 1, characterized in that: The top surface of the second water storage tank (13) is provided with a plurality of ventilation slots (16).

8. The sintering furnace cooling structure according to claim 1, characterized in that: The bottom surface of the sintering furnace body (2) is provided with a raised base (21), and the air supply assembly (4) comprises a base (43) connected to the side of the raised base (21), a blower (42) connected to the surface of the base (43), and an air supply pipeline (41) connected to the output end of the blower (42) and the other end of which is connected to the turbine air inlet (311) of the cavity (31).

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