CN214095489U

CN214095489U - Microwave sintering device with waste heat recovery function for silicon nitride ceramic production

Info

Publication number: CN214095489U
Application number: CN202022402718.7U
Authority: CN
Inventors: 刘丹
Original assignee: Hunan Ruiming Precision Ceramics Co ltd
Current assignee: Hunan Ruiming Precision Ceramics Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-08-31
Anticipated expiration: 2030-10-26

Abstract

The utility model relates to the technical field of microwave sintering devices, in particular to a microwave sintering device with waste heat recovery for silicon nitride ceramic production, which comprises a bracket, an outer cover and a bottom plate, wherein the left end and the right end of the outer cover are fixedly connected with the bracket, the inner side of the outer cover is provided with a waste heat recovery water pipe, the inner wall surface of the outer cover is fixedly connected with a fixed heat insulation block, the inner wall of the fixed heat insulation block is slidably connected with a rotating heat insulation plate, the top end of the rotating heat insulation plate is fixedly connected with a turntable, the bottom end of the turntable is fixedly connected with a microwave generator, the bottom end of the outer cover is provided with the bottom plate, the top end of the bottom plate is fixedly connected with a fixed block, and the top end of the fixed block is fixedly connected with a placing frame, the cooling of the silicon nitride ceramic is accelerated.

Description

Microwave sintering device with waste heat recovery function for silicon nitride ceramic production

Technical Field

The utility model relates to a microwave sintering device technical field specifically is a microwave sintering device is used in silicon nitride ceramic manufacture with waste heat recovery.

Background

The microwave sintering is a new method of a material sintering process, has the characteristics of high temperature rise speed, high energy utilization rate, high heating efficiency, safety, sanitation, no pollution and the like, can improve the uniformity and yield of products, improves the microstructure and performance of sintered materials, becomes a new research hotspot in the field of material sintering, is also a rapid sintering method of ceramics, but has the greatest characteristic of being different from other methods, namely a unique heating mechanism. Microwave sintering is a novel sintering method in which microwaves directly interact with particles (molecules and ions) of a substance, and a sample directly absorbs microwave energy by utilizing dielectric loss of a material so as to be heated and sintered.

In the microwave sintering process, certain heat can be generated after the silicon nitride ceramic is sintered, the silicon nitride ceramic is not easy to take out due to the heat, the energy is wasted, and the silicon nitride ceramic is not easy to fix and support when being sintered by microwave, so that the microwave sintering effect of the silicon nitride ceramic is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a silicon nitride is microwave sintering device for ceramic manufacture with waste heat recovery to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a microwave sintering device with waste heat recovery for silicon nitride ceramic production comprises a support, an outer cover and a bottom plate, wherein the left end and the right end of the outer cover are fixedly connected with the support, the top end of the support positioned on the left side is fixedly connected with a controller, a waste heat recovery water pipe is arranged on the inner side of the outer cover, a fixed heat insulation block is fixedly connected to the inner wall surface of the outer cover, a rotating heat insulation plate is slidably connected to the inner wall of the fixed heat insulation block, a rotating disc is fixedly connected to the top end of the rotating heat insulation plate, a microwave generator is fixedly connected to the bottom end of the rotating disc, the rotating disc is rotatably connected to the top end of the inner side of the outer cover, a speed reduction motor is fixedly connected to the top end of the outer cover, the tail end of a main shaft of the speed reduction motor is fixedly connected with the rotating disc, the bottom end of the outer cover is provided with the bottom plate, an electric lifting rod is fixedly connected to the bottom end of the bottom plate, a fixed block is fixedly connected to the top end of the bottom plate, the top fixedly connected with rack of fixed block, the inboard sliding connection of rack has the square pole sleeve.

Preferably, the number of the fixed heat insulation blocks and the number of the placing grooves are four, the fixed heat insulation blocks and the placing grooves are uniformly distributed on the inner side of the outer cover, the placing grooves are arranged between the adjacent fixed heat insulation blocks, and the waste heat recovery water pipe is arranged on the inner side of the placing grooves.

Preferably, the width of the rotary heat insulation plate is 1.2 times of the width of the placement groove, and the width of the rotary heat insulation plate is the same as that of the fixed heat insulation block.

Preferably, the inboard fixedly connected with servo motor in top of fixed block, servo motor's the terminal fixedly connected with of main shaft rotates the sleeve, rotate telescopic top and rack fixed connection, it is provided with the screw thread piece to rotate telescopic inboard, the top fixedly connected with square bar of screw thread piece, the outer terminal surface sliding connection of square bar has the square bar sleeve.

Preferably, the inner wall surface of the rotating sleeve is provided with a thread groove, the thread block is in threaded connection with the inner wall surface of the rotating sleeve, the inner side of the square rod sleeve is provided with an edge groove, the square rod is connected to the inner side of the edge groove in a sliding mode, the outer side of the square rod is provided with a spring, and the top end and the bottom end of the spring are fixedly connected with the square rod sleeve and the thread block respectively.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, the rotary heat insulation plate and the fixed heat insulation block are staggered with each other through the rotary heat insulation plate, the fixed heat insulation block, the waste heat recovery water pipe and other components arranged, thereby avoiding heat loss when the silicon nitride ceramic is subjected to microwave sintering, the waste heat recovery water pipe is leaked through the rotation of the rotary heat insulation plate, and the waste heat generated when the silicon nitride ceramic is subjected to microwave sintering can be recovered by the flowing of cold water in the inner side of the waste heat recovery water pipe, so that the cooling of the silicon nitride ceramic is accelerated, the waste heat is convenient to reuse, and the waste of heat is reduced;

2. the utility model discloses in, through the rotation sleeve that sets up, the square pole sleeve, components such as spring, can drive through servo motor and rotate telescopic rotation, make the screw thread piece drive square pole up-and-down motion, increase the telescopic elasticity of square pole of spring, adjust through the spring to different positions, thereby make silicon nitride pottery placing the back, the square pole sleeve can be according to the difference of silicon nitride pottery's bottom shape, the square pole sleeve that is located the intermediate position supports silicon nitride pottery, the square pole sleeve that is located peripheral position fixes silicon nitride pottery, guarantee silicon nitride pottery's sintering effect.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of a top-down structure of the cover of the present invention;

fig. 4 is a schematic view of the internal structure of the rotating sleeve according to the present invention.

In the figure: 1-bracket, 2-outer cover, 3-speed reducing motor, 4-rotary table, 5-microwave generator, 6-rotary heat insulation plate, 7-fixed heat insulation block, 8-waste heat recovery water pipe, 9-placing groove, 10-bottom plate, 11-electric lifting rod, 12-fixed block, 13-placing rack, 14-servo motor, 15-rotary sleeve, 16-thread block, 17-square rod, 18-square rod sleeve, 19-spring and 20-controller.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a microwave sintering device with waste heat recovery for silicon nitride ceramic production comprises a support 1, an outer cover 2 and a bottom plate 10, wherein the left end and the right end of the outer cover 2 are fixedly connected with the support 1, the top end of the support 1 positioned on the left side is fixedly connected with a controller 20, a waste heat recovery water pipe 8 is arranged on the inner side of the outer cover 2, the inner wall surface of the outer cover 2 is fixedly connected with a fixed heat insulation block 7, the inner wall of the fixed heat insulation block 7 is connected with a rotating heat insulation plate 6 in a sliding manner, the heat insulation is realized by rotating the heat insulation plate 6 and the fixed heat insulation block 7, the heat quantity is reduced, the top end of the rotating heat insulation plate 6 is fixedly connected with a turntable 4, the bottom end of the turntable 4 is fixedly connected with a microwave generator 5, the turntable 4 is rotatably connected with the top end of the inner side of the outer cover 2, the top end of the outer cover 2 is fixedly connected with a speed reducing motor 3, the end of a main shaft of the speed reducing motor 3 is fixedly connected with the turntable 4, the bottom end of the outer cover 2 is provided with the bottom plate 10, bottom fixedly connected with electric lift pole 11 of bottom plate 10, the lift of bottom plate 10 can be realized through electric lift pole 11 to this kind of setting, makes things convenient for placing of silicon nitride pottery, the top fixedly connected with fixed block 12 of bottom plate 10, the top fixedly connected with rack 13 of fixed block 12, the inboard sliding connection of rack 13 has square pole sleeve 18, and this kind of setting supports the silicon nitride pottery through square pole sleeve 18.

The number of the fixed heat insulation blocks 7 and the placing grooves 9 is four, the fixed heat insulation blocks 7 and the placing grooves 9 are uniformly distributed on the inner side of the outer cover 2, the placing grooves 9 are arranged between the adjacent fixed heat insulation blocks 7, the waste heat recovery water pipe 8 is arranged on the inner side of the placing grooves 9, the arrangement is convenient for placing the waste heat recovery water pipe 8 through the placing grooves 9, the width of the rotary heat insulation plate 6 is 1.2 times of the width of the placing grooves 9, the width of the rotary heat insulation plate 6 is the same as that of the fixed heat insulation blocks 7, the rotary heat insulation plate 6 can shield the placing grooves 9 and can be mutually overlapped with the fixed heat insulation blocks 7, the inner side of the top end of the fixed block 12 is fixedly connected with a servo motor 14, the tail end of a main shaft of the servo motor 14 is fixedly connected with a rotary sleeve 15, the top end of the rotary sleeve 15 is fixedly connected with the placing frame 13, the inner side of the rotary sleeve 15 is provided with a threaded block 16, top fixedly connected with square pole 17 of screw block 16, the outer terminal surface sliding connection of square pole 17 has square pole sleeve 18, this kind of setting makes square pole sleeve 18 carry on spacingly to screw block 16 through square pole 17, avoid screw block 16 to take place to rotate, the thread groove has been seted up to the internal face of rotating sleeve 15, screw block 16 and the internal face threaded connection who rotates sleeve 15, stupefied groove has been seted up to square pole sleeve 18's inboard, square pole 17 sliding connection is inboard in stupefied groove, square pole 17's the outside is provided with spring 19, spring 19's top and bottom respectively with square pole sleeve 18 and screw block 16 fixed connection, this kind of setting makes to rotate sleeve 15 through the thread groove and can drive screw block 16 after rotating and rise in the inboard of rotating sleeve 15, can pop out square pole sleeve 18 from the inboard of rack 13 through spring 19's elasticity.

The working process is as follows: the utility model supplies power through an external power supply before using, control through the controller 20, at first start the electric lifting rod 11 to drive the bottom plate 10 to descend, later place the silicon nitride ceramics that needs to be subjected to microwave sintering above the placing rack 13, make the square bar sleeve 18 to support, later start the servo motor 14, the servo motor 14 rotates by a large enemy rotating sleeve 15, the rotating sleeve 15 rotates outside the thread block 16 after rotating, through the threaded connection of the rotating sleeve 15 and the thread block 16, drive the thread block 16 to move up and down inside the rotating sleeve 15, the thread block 16 can increase the elasticity of the spring 19 after moving, make the spring 19 drive the square bar sleeve 18 to more stably support the silicon nitride ceramics, through adjusting the spring 19 of different positions, make the spring 19 elasticity of the square bar sleeve 18 bottom end in protruding contact with the silicon nitride bottom end surface relatively smaller, the spring 19 at the bottom end of the square rod sleeve 18 which is in concave contact with the bottom end surface of the silicon nitride has relatively larger elasticity, so that the square rod sleeve 18 supports the silicon nitride ceramic, the stability of the silicon nitride ceramic when supported is ensured, then the electric lifting rod 11 drives the bottom plate 10 to be attached to the bottom end of the outer cover 2, the silicon nitride ceramic enters the inner side of the outer cover 2, the microwave generator 5 is started to enable the microwave generator 5 to emit microwaves, the silicon nitride ceramic is subjected to microwave sintering, after the processing is finished, the microwave sintering of the silicon nitride ceramic can cause the temperature in the outer cover 2 to rise, at the moment, the speed reducing motor 3 can be started, the speed reducing motor 3 drives the rotary table 4 to rotate, the rotary table 4 can drive the rotary heat insulation plate 6 to rotate and be attached to the fixed heat insulation block 7, at the moment, the waste heat recovery water pipe 8 leaks out of the placing groove 9, the waste heat recovery water pipe 8 is communicated with the cold water pump, and cold water flows at the inner side of the waste heat recovery water pipe 8, on the one hand, the temperature reduction in the outer cover 2 can be realized, and on the other hand, the temperature rise of cold water can be realized to recover the waste heat in the outer cover 2.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a silicon nitride is microwave sintering device for ceramic production with waste heat recovery, includes support (1), dustcoat (2) and bottom plate (10), its characterized in that: the left end and the right end of the outer cover (2) are both fixedly connected with a support (1), the top end of the support (1) positioned on the left side is fixedly connected with a controller (20), the inner side of the outer cover (2) is provided with a waste heat recovery water pipe (8), the inner wall surface of the outer cover (2) is fixedly connected with a fixed heat insulation block (7), the inner wall of the fixed heat insulation block (7) is connected with a rotating heat insulation plate (6) in a sliding manner, the top end of the rotating heat insulation plate (6) is fixedly connected with a turntable (4), the bottom end of the turntable (4) is fixedly connected with a microwave generator (5), the turntable (4) is rotatably connected to the top end of the inner side of the outer cover (2), the top end of the outer cover (2) is fixedly connected with a speed reduction motor (3), the tail end of a main shaft of the speed reduction motor (3) is fixedly connected with the turntable (4), the bottom end of the outer cover (2) is provided with a bottom plate (10), the bottom fixedly connected with electric lift pole (11) of bottom plate (10), the top fixedly connected with fixed block (12) of bottom plate (10), the top fixedly connected with rack (13) of fixed block (12), the inboard sliding connection of rack (13) has square pole sleeve (18).

2. The microwave sintering device with waste heat recovery for silicon nitride ceramic production according to claim 1, characterized in that: the quantity of fixed heat insulating blocks (7) and standing grooves (9) is four, and fixed heat insulating blocks (7) and standing grooves (9) all are evenly distributed in the inboard of dustcoat (2), are located adjacently be provided with standing grooves (9) between fixed heat insulating blocks (7), waste heat recovery water pipe (8) set up the inboard at standing grooves (9).

3. The microwave sintering device with waste heat recovery for silicon nitride ceramic production according to claim 1, characterized in that: the width of the rotary heat insulation plate (6) is 1.2 times of that of the placing groove (9), and the width of the rotary heat insulation plate (6) is the same as that of the fixed heat insulation block (7).

4. The microwave sintering device with waste heat recovery for silicon nitride ceramic production according to claim 1, characterized in that: the utility model discloses a quick-witted support structure, including servo motor (14), the inboard fixedly connected with servo motor (14) in top of fixed block (12), the terminal fixedly connected with of main shaft of servo motor (14) rotates sleeve (15), the top and rack (13) fixed connection who rotates sleeve (15), the inboard of rotating sleeve (15) is provided with screw thread piece (16), the top fixedly connected with square bar (17) of screw thread piece (16), the outer terminal surface sliding connection of square bar (17) has square bar sleeve (18).

5. The microwave sintering device with waste heat recovery for silicon nitride ceramic production according to claim 4, characterized in that: the inner wall surface of the rotating sleeve (15) is provided with a thread groove, the thread block (16) is in threaded connection with the inner wall surface of the rotating sleeve (15), the inner side of the square rod sleeve (18) is provided with an edge groove, the square rod (17) is in sliding connection with the inner side of the edge groove, a spring (19) is arranged on the outer side of the square rod (17), and the top end and the bottom end of the spring (19) are respectively fixedly connected with the square rod sleeve (18) and the thread block (16).