A fast cooling device for reaction sintered silicon carbide sintering furnace

Abstract

The invention relates to the technical field of sintering furnaces, and in particular to a fast cooling device for a reaction sintered silicon carbide sintering furnace, comprising a sintering furnace body, a fixing frame connected and fixedly arranged on one side of the sintering furnace body, a furnace door rotatably arranged on the fixing frame, a furnace door cooling mechanism rotatably arranged on the furnace door, a heat conduction retaining mechanism rotatably arranged through the furnace door, and an anti-scalding cover connected and fixedly arranged on the transmission mechanism. During the use of the reaction sintered silicon carbide sintering furnace, the furnace door cooling mechanism is arranged on the furnace door, and flowing water is utilized to flow inside the furnace door to quickly cool the furnace door, so as to avoid softening or deformation of sealing materials caused by excessive temperature, thereby causing failure of the furnace door seal. By arranging the heat conduction retaining mechanism, when the furnace door is opened and closed, the spiral descaling rod is driven by the transmission mechanism to rotate, so as to process the scale in the furnace door, effectively reduce the influence of the scale on the cooling efficiency, and maintain the long-term stability of the system.

Description

Technical Field

[0001] The invention relates to the technical field of sintering furnaces, and in particular to a fast cooling device for a reaction-sintered silicon carbide sintering furnace. Background Art

[0002] Reaction sintering silicon carbide sintering furnace is a high-temperature sintering furnace used to produce silicon carbide (SiC) ceramic materials. As an advanced ceramic material with high hardness, high wear resistance, corrosion resistance and high temperature resistance, silicon carbide is widely used in aerospace, automobile, electronics, machinery, chemical industry and other fields. In the production process of silicon carbide, reaction sintering is a common sintering method, which promotes the formation of silicon carbide by reacting with gas at high temperature.

[0003] Reaction sintering silicon carbide sintering furnace plays a vital role in the production of silicon carbide ceramics. Its design needs to consider multiple factors such as temperature control, atmosphere management, furnace material and cooling system. Through a reasonable sintering process, high-quality silicon carbide ceramic materials can be produced. These materials have been widely used in many high-tech fields due to their excellent performance.

[0004] The rapid cooling device of the reaction-sintered silicon carbide sintering furnace plays a vital role in the entire sintering process, which can effectively improve the sintering efficiency, ensure product quality and extend the life of the equipment. The sintering process of reaction-sintered silicon carbide involves high-temperature reaction and solid-phase reaction, which usually requires a long insulation time and a suitable cooling rate. The furnace door of the existing reaction-sintered silicon carbide sintering furnace is not convenient for rapid cooling, resulting in the furnace door being usually affected by frequent switching operations and atmosphere changes during the sintering process, which may cause seal damage or deformation of the furnace door components due to excessive temperature.

[0005] In summary, the prior art lacks a technology for rapidly cooling the furnace door of a reaction-sintered silicon carbide sintering furnace. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a rapid cooling device for a reaction sintered silicon carbide sintering furnace.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: a fast cooling device for a reaction sintered silicon carbide sintering furnace, comprising a sintering furnace body, a fixed frame is connected and fixedly arranged on one side of the sintering furnace body, a furnace door is rotatably connected and arranged on the fixed frame, a connecting end on one side of the furnace door is rotatably connected and arranged with the fixed frame, a cooling chamber is opened in the furnace door, an annular rack is connected and fixedly arranged in the cooling chamber, a furnace door cooling mechanism is rotatably connected and arranged on the furnace door, the furnace door cooling mechanism comprises two guide pipes, one end of the guide pipe passes through the fixed frame and is connected and fixedly arranged therewith, the other end of the guide pipe passes through the connecting end of the furnace door and the fixed frame in turn and extends to the outside, one end of the guide pipe located on the lower side is rotatably connected and arranged with a drain pipe, the other end of the drain pipe is communicated with the bottom end of the furnace door, the guide pipe located on the upper side is rotatably connected and arranged with a water inlet pipe, the other end of the water inlet pipe is communicated with the top end of the furnace door, and one end of the water inlet pipe close to the guide pipe is connected and fixedly arranged with The cam is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts.

[0008] Preferably, an arc-shaped rack A and an arc-shaped rack B are connected and fixedly provided on the fixed frame, and the arc-shaped rack A is meshed and transmission-equipped with the opening and closing wheel.

[0009] Preferably, a fan-shaped concave-convex plate is connected and fixedly provided on one side of the fixing seat.

[0010] Preferably, the transmission mechanism includes a rotating shaft, which is rotatably connected to a fixed seat, a toothed disc is fixedly connected to one end of the rotating shaft, the toothed disc is meshingly transmitted with a gear, a worm wheel is fixedly connected to the middle of the rotating shaft, a worm is meshingly transmitted with a worm on the lower side of the worm wheel, a universal joint B is fixedly connected to the worm, a support frame is rotatably connected to the universal joint B, the support frame is fixedly connected to the water inlet pipe, an adjusting wheel is fixedly connected to the other end of the universal joint B, and the adjusting wheel is meshingly transmitted with an arc-shaped rack B.

[0011] Preferably, the side of the anti-scalding cover close to the furnace door is made of ceramic material, one end of the anti-scalding cover is connected and fixed to the rotating shaft, one side of the anti-scalding cover is provided with a slide groove, the inner wall of the slide groove is slidably provided with a slider, a spring is connected and fixedly provided on the slider, the other end of the spring is connected and fixedly provided with the inner wall of the slide groove, a triangular block is connected and fixedly provided on the outer end of the slider, the triangular block is slidably provided with the fan-shaped concave-convex plate, one side of the slider is connected and fixedly provided with a brush holder, and the brush holder is in friction contact with one side of the furnace door.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. During the use of the reaction sintering silicon carbide sintering furnace, a furnace door cooling mechanism is set on the furnace door, and flowing water is used to flow inside the furnace door to quickly cool the furnace door to avoid excessive temperature that may soften or deform the sealing material and cause the furnace door seal to fail. By setting a heat conduction holding mechanism, when the furnace door is opened and closed, the spiral descaling rod will rotate under the drive of the transmission mechanism, which can process the scale in the furnace door, effectively reduce the impact of scale on cooling efficiency, and maintain the long-term stability of the system;

[0014] 2. By setting up the anti-scalding cover, when the furnace door is opened, it can be automatically blocked at the furnace door driven by the transmission mechanism, which can effectively prevent the operator from contacting the high-temperature furnace door, reduce the risk of manual operation, and improve the overall safety. At the same time, by setting up a reciprocating brush rack, the silicon carbide particles accumulated on the side of the furnace door facing the furnace body can be cleaned, thereby further ensuring the sealing of the furnace door and the stability of the atmosphere in the furnace;

[0015] 3. At the same time, by setting the arc-shaped rack A, the automatic opening and closing of the valve body is realized when the furnace door is opened and closed, reducing the need for human intervention, enhancing the degree of automation, and effectively improving the automation and efficiency of the cooling system, protecting equipment, saving energy, simplifying operations, reducing maintenance costs, and ensuring the stability and safety of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a rapid cooling device of a reaction sintered silicon carbide sintering furnace of the present invention when the furnace door is closed;

[0017] Figure 2 It is a schematic diagram of the overall structure of a fast cooling device of a reaction sintered silicon carbide sintering furnace of the present invention when the furnace door is opened;

[0018] Figure 3 It is a partial cross-sectional schematic diagram of a part of the structure of a rapid cooling device for a reaction sintered silicon carbide sintering furnace of the present invention;

[0019] Figure 4This is a schematic diagram of the structure of a fixing frame of a rapid cooling device for a reaction sintered silicon carbide sintering furnace according to the present invention;

[0020] Figure 5 It is a partial cross-sectional schematic diagram of the structure of a furnace door cooling mechanism of a rapid cooling device of a reaction sintered silicon carbide sintering furnace of the present invention;

[0021] Figure 6 It is a cross-sectional schematic diagram of a furnace door structure of a rapid cooling device of a reaction sintered silicon carbide sintering furnace of the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of a heat conduction maintaining mechanism of a rapid cooling device for a reaction sintered silicon carbide sintering furnace of the present invention;

[0023] Figure 8 This is a schematic diagram of the structure of a fixing seat and a transmission mechanism of a fast cooling device of a reaction sintered silicon carbide sintering furnace of the present invention;

[0024] Fig. 9 The present invention is a schematic diagram of an anti-scalding cover structure of a rapid cooling device for a reaction sintered silicon carbide sintering furnace.

[0025] The following are marked in the figure: 1. Sintering furnace body; 2. Fixing frame; 3. Furnace door; 4. Furnace door cooling mechanism; 5. Heat conduction holding mechanism; 6. Fixing seat; 7. Transmission mechanism; 8. Anti-scalding cover; 201. Arc rack A; 202. Arc rack B; 401. Flow guide pipe; 402. Drain pipe; 403. Water inlet pipe; 404. Valve body; 405. Valve core; 406. Opening and closing wheel; 301. Cooling chamber; 302. Ring gear strip; 501, universal joint A; 502, transmission wheel; 503, rotating frame; 504, spiral descaling rod; 505, gear; 601, fan-shaped concave-convex plate; 701, rotating shaft; 702, toothed disc; 703, worm wheel; 704, worm; 705, universal joint B; 706, adjusting wheel; 707, supporting frame; 801, slide groove; 802, slider; 803, spring; 804, triangle block; 805, brush holder. DETAILED DESCRIPTION

[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0027] like Figure 1-Figure 9The fast cooling device of a reaction sintered silicon carbide sintering furnace shown in the figure comprises a sintering furnace body 1, a fixing frame 2 is connected and fixedly arranged on one side of the sintering furnace body 1, a furnace door 3 is rotatably connected and arranged on the fixing frame 2, a connecting end on one side of the furnace door 3 is rotatably connected and arranged with the fixing frame 2, a cooling chamber 301 is opened in the furnace door 3, an annular rack 302 is connected and fixedly arranged in the cooling chamber 301, a furnace door cooling mechanism 4 is rotatably connected and arranged on the furnace door 3, and the furnace door cooling mechanism 4 comprises two guide pipes 401, one end of the guide pipe 401 passes through the fixed The fixed frame 2 is connected and fixed thereto, the other end of the guide pipe 401 passes through the connection end of the furnace door 3 and the fixed frame 2 in sequence and extends to the outside, one end of the guide pipe 401 located on the lower side is rotatably connected to a drain pipe 402, the other end of the drain pipe 402 is connected to the bottom end of the furnace door 3, and the guide pipe 401 located on the upper side is rotatably connected to an inlet pipe 403, the other end of the inlet pipe 403 is connected to the top end of the furnace door 3, and one end of the inlet pipe 403 close to the guide pipe 401 is connected and fixed to a valve body 404, which is rotatably connected inside the valve body 404. A valve core 405 is connected, one end of the valve core 405 passes through the inner wall of the valve body 404 and extends to the outside and is connected and fixed with an opening and closing wheel 406. A heat conduction holding mechanism 5 is rotatably connected and arranged in the furnace door 3. The heat conduction holding mechanism 5 includes a universal joint A501. The universal joint A501 is rotatably connected to the inner wall of the furnace door 3. A pin is fixedly connected and arranged at one end of the universal joint A501. The pin passes through a limiting hole on the furnace door 3 and is rotatably connected therewith. A transmission wheel 502 is fixedly connected to the top of the pin. One end of 501 located in the cooling chamber 301 is connected and fixedly provided with a rotating frame 503, and a spiral descaling rod 504 is rotatably connected to the rotating frame 503. The spiral descaling rod 504 is arranged in sliding contact with the inner wall of one side of the cooling chamber 301, and one end of the spiral descaling rod 504 is connected and fixedly provided with a gear 505, and the gear 505 is meshed with the annular rack 302 for transmission. A fixed seat 6 is connected and fixedly provided on the furnace door 3, and a transmission mechanism 7 is rotatably connected to the fixed seat 6, and an anti-scalding cover 8 is connected and fixedly provided on the transmission mechanism 7.

[0028] like Figure 4 As shown, an arc-shaped rack A201 and an arc-shaped rack B202 are connected and fixedly arranged on the fixed frame 2, and the arc-shaped rack A201 is meshed with the opening and closing wheel 406 for transmission.

[0029] like Figure 8 As shown, a fan-shaped concave-convex plate 601 is connected and fixedly provided on one side of the fixing seat 6 .

[0030] like Figure 8As shown, the transmission mechanism 7 includes a rotating shaft 701, which is rotatably connected to the fixed seat 6, a toothed disc 702 is fixedly connected to one end of the rotating shaft 701, and the toothed disc 702 is meshingly transmitted with the gear 505, a worm wheel 703 is fixedly connected to the middle of the rotating shaft 701, and a worm 704 is meshingly transmitted at the lower side of the worm wheel 703, a universal joint B705 is fixedly connected to the worm 704, a support frame 707 is rotatably connected to the universal joint B705, the support frame 707 is fixedly connected to the water inlet pipe 403, an adjusting wheel 706 is fixedly connected to the other end of the universal joint B705, and the adjusting wheel 706 is meshingly transmitted with the arc rack B202. Open the furnace door 3, and the valve core 405 will reverse and close. At the same time, under the action of the arc-shaped rack B202, the adjusting wheel 706 will be driven to rotate. At this time, the adjusting wheel 706 will drive the connected universal joint B705 to rotate, so that the universal joint B705 drives the worm 704 to rotate, and the worm 704 drives the rotating shaft 701 connected to the worm wheel 703 to rotate. At this time, the rotating shaft 701 drives the gear plate 702 to rotate.

[0031] like Fig. 9 As shown, the side of the anti-scalding cover 8 close to the oven door 3 is made of ceramic material, one end of the anti-scalding cover 8 is connected and fixed to the rotating shaft 701, a slide groove 801 is opened on one side of the anti-scalding cover 8, and a slider 802 is slidably arranged on the inner wall of the slide groove 801, a spring 803 is connected and fixedly arranged on the slider 802, and the other end of the spring 803 is connected and fixedly arranged on the inner wall of the slide groove 801, a triangular block 804 is connected and fixedly arranged on the outer end of the slider 802, and the triangular block 804 is slidably arranged with the fan-shaped concave-convex plate 601, and a brush holder 805 is connected and fixedly arranged on one side of the slider 802, and the brush holder 805 is arranged in friction contact with one side of the oven door 3. When the rotating shaft 701 rotates, it will drive the anti-scalding cover 8 to rotate and lower, blocking one side of the furnace door 3 to prevent the staff from accidentally touching the high-temperature furnace door 3. At the same time, when the anti-scalding cover 8 rotates, under the action of the fan-shaped concave-convex plate 601 and the spring 803, the slider 802 connected to the triangular block 804 will move back and forth, thereby driving the brush holder 805 to move back and forth to clean one side of the furnace door 3.

[0032] Working principle: When the sintering furnace body 1 needs to be used, the furnace door 3 is closed for use. At this time, under the action of the arc-shaped rack A201, the opening and closing wheel 406 is driven to rotate, so that the opening and closing wheel 406 drives the connected valve core 405 to rotate and open. At this time, the external water source is injected into the water inlet pipe 403 through the guide pipe 401, and then injected into the cooling cavity 301 in the furnace door 3 from the water inlet pipe 403, and then discharged from the drain pipe 402 into another guide pipe 401 for discharge, so as to use the flowing water to quickly cool the furnace door 3 to avoid problems with the sealing of the furnace door caused by high temperature;

[0033] After use, the furnace door 3 is opened, and the valve core 405 is reversed and closed. At the same time, the arc-shaped rack B202 drives the adjusting wheel 706 to rotate. At this time, the adjusting wheel 706 drives the connected universal joint B705 to rotate, so that the universal joint B705 drives the worm 704 to rotate, and the worm 704 drives the rotating shaft 701 connected to the worm wheel 703 to rotate. At this time, the rotating shaft 701 drives the gear plate 702 to rotate;

[0034] When the toothed disc 702 rotates, the universal joint A501 connected to the gear 505 will be driven to rotate, so that the universal joint A501 drives the connected rotating frame 503 to rotate, and then drives the spiral descaling rod 504 to rotate. At this time, under the action of the annular rack 302, the spiral descaling rod 504 connected to the gear 505 will rotate to scrape and clean the attachments on the inner wall of the cooling chamber 301 to ensure thermal conductivity;

[0035] Then, when the rotating shaft 701 rotates, it will drive the connection to drive the anti-scalding cover 8 to rotate and lower, blocking one side of the furnace door 3. The anti-scalding cover 8 made of ceramic material has poor thermal conductivity, which avoids high temperature, thereby preventing the staff from accidentally touching the high-temperature furnace door 3. At the same time, when the anti-scalding cover 8 rotates, under the action of the fan-shaped concave-convex plate 601 and the spring 803, the slider 802 connected to the triangular block 804 will move back and forth, thereby driving the brush holder 805 to move back and forth to clean one side of the furnace door 3.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A rapid cooling device for a reaction sintered silicon carbide sintering furnace, comprising a sintering furnace body (1), characterized in that: A fixing frame (2) is fixedly connected to one side of the sintering furnace body (1), a furnace door (3) is rotatably connected to the fixing frame (2), a connecting end on one side of the furnace door (3) is rotatably connected to the fixing frame (2), a cooling cavity (301) is provided in the furnace door (3), a ring rack (302) is fixedly connected to the cooling cavity (301), a furnace door cooling mechanism (4) is rotatably connected to the furnace door (3), and the furnace door cooling mechanism (4) comprises two guide pipes (401), one end of the guide pipe (401) passes through the fixing frame (2) and is fixedly connected thereto, and the other end of the guide pipe (401) passes through the connecting end of the furnace door (3) and the fixing frame in sequence. (2) and extends to the outside, one end of the guide pipe (401) located on the lower side is rotatably connected to a drain pipe (402), the other end of the drain pipe (402) is connected to the bottom end of the furnace door (3), and the guide pipe (401) located on the upper side is rotatably connected to a water inlet pipe (403), the other end of the water inlet pipe (403) is connected to the top end of the furnace door (3), one end of the water inlet pipe (403) close to the guide pipe (401) is connected and fixed to a valve body (404), a valve core (405) is rotatably connected inside the valve body (404), one end of the valve core (405) passes through the inner wall of the valve body (404) and extends to the outside and is connected and fixed to an opening and closing wheel (406), the fixed An arc-shaped rack A (201) and an arc-shaped rack B (202) are connected and fixedly arranged on the frame (2); the arc-shaped rack A (201) is meshed with the opening and closing wheel (406) for transmission; a heat conduction holding mechanism (5) is rotatably connected and arranged in the furnace door (3); the heat conduction holding mechanism (5) comprises a universal joint A (501); the universal joint A (501) is rotatably connected and arranged in the inner wall of the furnace door (3); a pin is connected and fixedly arranged at one end of the universal joint A (501); the pin passes through a limiting hole on the furnace door (3) and is rotatably connected thereto; a transmission wheel (502) is connected and fixedly arranged at the top end of the pin; the universal joint A (501) is located in the cooling chamber (301). A rotating frame (503) is fixedly provided at one end thereof, a spiral descaling rod (504) is rotatably provided on the rotating frame (503), the spiral descaling rod (504) is arranged in sliding contact with the inner wall of one side of the cooling chamber (301), a gear (505) is fixedly provided at one end of the spiral descaling rod (504), the gear (505) is meshed with the annular rack (302) for transmission, a fixing seat (6) is fixedly provided on the furnace door (3), a fan-shaped concave-convex plate (601) is fixedly provided on one side of the fixing seat (6), a transmission mechanism (7) is rotatably provided on the fixing seat (6), and an anti-scalding cover (8) is fixedly provided on the transmission mechanism (7).

2. A rapid cooling device for a reaction sintered silicon carbide sintering furnace according to claim 1, characterized in that: The transmission mechanism (7) comprises a rotating shaft (701), the rotating shaft (701) and the fixed seat (6) being rotatably connected, one end of the rotating shaft (701) being connected and fixedly provided with a toothed disc (702), the toothed disc (702) being meshingly provided with a gear (505) for transmission, a worm wheel (703) being connected and fixedly provided in the middle of the rotating shaft (701), a worm (704) being meshingly provided at the lower side of the worm wheel (703), a universal joint B (705) being connected and fixedly provided on the worm (704), a support frame (707) being rotatably provided on the universal joint B (705), the support frame (707) being connected and fixedly provided with a water inlet pipe (403), an adjusting wheel (706) being connected and fixedly provided at the other end of the universal joint B (705), the adjusting wheel (706) being meshingly provided with an arc-shaped rack B (202) for transmission.

3. The rapid cooling device for a reaction-sintered silicon carbide sintering furnace according to claim 1, characterized in that: The side of the anti-scalding cover (8) close to the oven door (3) is made of ceramic material, one end of the anti-scalding cover (8) is connected and fixedly arranged with the rotating shaft (701), one side of the anti-scalding cover (8) is provided with a slide groove (801), the inner wall of the slide groove (801) is slidably matched with a slider (802), a spring (803) is connected and fixedly arranged on the slider (802), the other end of the spring (803) is connected and fixedly arranged with the inner wall of the slide groove (801), the outer end of the slider (802) is connected and fixedly arranged with a triangular block (804), the triangular block (804) is slidably matched with the fan-shaped concave-convex plate (601), one side of the slider (802) is connected and fixedly arranged with a brush holder (805), and the brush holder (805) is arranged in frictional contact with one side of the oven door (3).

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