阅读说明：本技术 一种金属氧化物陶瓷材料的微波干燥设备 (Microwave drying equipment for metal oxide ceramic material ) 是由 何湘衡 沈志坚 李廷凯 赵武元 叶晨昊 张恳 于 2019-10-28 设计创作，主要内容包括：本发明涉及一种金属氧化物陶瓷材料的微波干燥设备,解决现有的金属氧化物陶瓷材料微波干燥设备微波功率不可控、功率密度不均匀的问题。本装置机架上设有谐振腔,谐振腔的底部前后两端相对设置有上料口和出料口,所述机架上还设有输送带,所述输送带由上料口向出料口从谐振腔的内部穿过,谐振腔通过波导管连接有微波功率源,所述波导管中段设有反射调节阀,反射调节阀的侧方设有功率吸收器。本发明微波功率可调,避免产品失水过快导致开裂,提高产品合格率和最终产品品质；改善了微波功率的均匀性,产品品质更加稳定；微波干燥过程中可以往谐振腔补充水蒸气,实现温干燥过程的湿度调节；采用机器人进出料自动化运行,使设备能并入流水线运行。(The invention relates to microwave drying equipment for a metal oxide ceramic material, which solves the problems of uncontrollable microwave power and uneven power density of the existing microwave drying equipment for the metal oxide ceramic material. The device is characterized in that a resonant cavity is arranged on the rack, a feeding port and a discharging port are oppositely arranged at the front end and the rear end of the bottom of the resonant cavity, a conveying belt is further arranged on the rack, the conveying belt penetrates through the feeding port and the discharging port from the inside of the resonant cavity, the resonant cavity is connected with a microwave power source through a waveguide tube, a reflection regulating valve is arranged in the middle section of the waveguide tube, and a power absorber is arranged on the side of the. The microwave power of the invention is adjustable, thereby avoiding cracking caused by too fast water loss of the product, and improving the product qualification rate and the final product quality; the uniformity of microwave power is improved, and the product quality is more stable; in the microwave drying process, water vapor can be supplemented to the resonant cavity, so that the humidity adjustment in the warm drying process is realized; and the robot is adopted to automatically operate feeding and discharging, so that the equipment can be merged into a production line to operate.)

1. The microwave drying equipment for the metal oxide ceramic material comprises a rack and is characterized in that: the microwave oven is characterized in that a resonant cavity is arranged on the frame, a feeding port and a discharging port are oppositely arranged at the front end and the rear end of the bottom of the resonant cavity, a conveying belt is further arranged on the frame, the conveying belt penetrates through the resonant cavity from the feeding port to the discharging port, the resonant cavity is connected with a microwave power source through a waveguide tube, a reflection regulating valve is arranged in the middle section of the waveguide tube, and a power absorber is arranged on the side of the reflection.

2. The microwave drying apparatus for metal oxide ceramic material according to claim 1, wherein: the reflection governing valve is rotatable reflecting plate, and the reflecting plate pivot is perpendicular with the waveguide pipe direction, one side that the waveguide pipe set up reflection governing valve department is equipped with the bleeder, and the power absorber is connected to the bleeder, the bleeder is perpendicular with the waveguide pipe direction and the bleeder is perpendicular with reflecting plate pivot direction.

3. The microwave drying apparatus for metal oxide ceramic material according to claim 1, wherein: the resonant cavity is triangular, the length of the resonant cavity in the front-back direction is uniformly increased from top to bottom, and the waveguide tube is connected with the center of the top surface of the resonant cavity from top to bottom.

4. A microwave drying apparatus for metal oxide ceramic material according to claim 1, 2 or 3, wherein: the waveguide tube is sequentially provided with a circulator, a coupler and a three-screw regulator between the reflection regulating valve and the resonant cavity.

5. A microwave drying apparatus for metal oxide ceramic material according to claim 1, 2 or 3, wherein: the microwave power source is arranged on the rack below the conveying belt, and the waveguide tube is a bent tube bent for multiple times.

6. A microwave drying apparatus for metal oxide ceramic material according to claim 1, 2 or 3, wherein: still be equipped with steam generator in the frame, the lateral wall of resonant cavity is equipped with a plurality of steam input hole, steam generator passes through the steam output tube and connects each steam input hole respectively, the resonant cavity lateral wall still is equipped with the humiture probe that provides the signal for steam generator.

7. The microwave drying apparatus for metal oxide ceramic material according to claim 6, wherein: the rack is also provided with a water storage tank, the water storage tank is connected with a microwave power source through a circulating water pump and then connected to a steam generator, and the steam generator is connected to the water storage tank back to form circulation.

8. The microwave drying apparatus for metal oxide ceramic material according to claim 1, wherein: the conveyer belt is controlled by a stepping motor.

9. Microwave drying apparatus of a metal oxide ceramic material according to claim 1 or 2 or 3 or 8, characterized in that: the feeding hole and the discharging hole of the resonant cavity are respectively provided with an openable safety isolation plate.

10. Microwave drying apparatus of a metal oxide ceramic material according to claim 1 or 2 or 3 or 8, characterized in that: a prepared storage area is arranged on the front side of the feeding end of the conveying belt, and a feeding robot is arranged between the prepared storage area and the feeding end of the conveying belt; the rear side of the discharge end of the conveying belt is provided with a discharge temporary storage area, and a discharge robot is arranged between the discharge end of the conveying belt and the discharge temporary storage area.

Technical Field

The invention belongs to the field of artificial biomaterial preparation equipment, relates to drying equipment, and particularly relates to microwave drying equipment for a metal oxide ceramic material.

Background

Artificial biomaterials such as artificial bones, teeth, etc. are generally metal oxide ceramic materials such as zirconia, alumina. The biscuit material of the ceramic material needs to be dried and dehydrated in the preparation process. The existing drying method of the metal oxide ceramic material on the market at present generally uses an oven for drying, and the principle of the method is to heat a biscuit through heat conduction and integrally raise the temperature, so as to accelerate the evaporation of water. Although the method is simple, the evaporation of water is from outside to inside, so that the drying time is long, and because the heating is not uniform and the escape of water vapor is not smooth, the inside of a biscuit block of the ceramic material is easy to crack, and the drying quality cannot be guaranteed. And the production line operation is not easy to realize in the common drying operation of the drying oven.

In addition, microwave heating equipment is also used for drying zirconium oxide biscuit in the industry. The principle is that microwave is used to heat, volatilize and vaporize water molecules in the zirconia biscuit, so that the zirconia biscuit block is dried. However, the existing microwave equipment has the following problems: 1) the microwave power is not adjustable, so that the initial power is too high and is generally more than 200W; this results in a process power window threshold that is too high and a rate of water loss that is too fast, easily causing the ceramic biscuit product to burst. 2) The power density of the working area is not uniform, so that the quality stability of the product is poor in batch production. 3) The temperature and the humidity of the process environment can not be cooperatively regulated, so that the product still has micro cracks in the drying process. 4) The equipment can not be automatically loaded and unloaded and can not be merged into a production line in a production line manner.

Disclosure of Invention

The invention aims to solve the problems of uncontrollable microwave power and non-uniform power density of the existing microwave drying equipment for the metal oxide ceramic material, and provides the microwave drying equipment for the metal oxide ceramic material. Furthermore, the invention also solves the problem that the temperature and the humidity of the existing microwave equipment can not be regulated and controlled cooperatively; and automatic control feeding and discharging of the equipment is realized, so that the equipment can be incorporated into a production line for production.

The technical scheme includes that the microwave drying equipment for the metal oxide ceramic material comprises a rack and is characterized in that a resonant cavity is arranged on the rack, a feeding port and a discharging port are oppositely arranged at the front end and the rear end of the bottom of the resonant cavity, a conveying belt is further arranged on the rack, the conveying belt penetrates through the resonant cavity from the feeding port to the discharging port, the resonant cavity is connected with a microwave power source through a waveguide tube, a reflection adjusting valve is arranged at the middle section of the waveguide tube, and a power absorber is arranged on the side of the reflection adjusting valve.

Preferably, the reflection regulating valve is a rotatable reflection plate, a rotating shaft of the reflection plate is perpendicular to the direction of the waveguide tube, a branch tube is arranged on one side of the waveguide tube where the reflection regulating valve is arranged, the branch tube is connected with the power absorber, the branch tube is perpendicular to the direction of the waveguide tube, and the branch tube is perpendicular to the rotating shaft of the reflection plate. The reflection regulating valve regulates the included angle between the reflecting plate and the waveguide tube through the rotating angle, so that the passing and reflection ratio of the microwave power is controlled.

Preferably, the resonant cavity is triangular, the length of the resonant cavity in the front-back direction is uniformly increased from top to bottom, and the waveguide is connected with the center of the top surface of the resonant cavity from top to bottom. The triangular resonant cavity is used for inputting microwaves downwards from the top, so that the power density at the bottom of the resonant cavity is more uniform.

Preferably, the waveguide tube is sequentially provided with a circulator, a coupler and a three-screw regulator between the reflection regulating valve and the resonant cavity.

Preferably, the microwave power source is arranged on the rack below the conveying belt, and the waveguide is a multi-bending folded tube.

Preferably, the rack is further provided with a steam generator, the side wall of the resonant cavity is provided with a plurality of steam input holes, the steam generator is respectively connected with the steam input holes through a steam output pipe, the side wall of the resonant cavity is further provided with a temperature and humidity probe for providing signals for the steam generator, water vapor generated by the steam generator is injected into the resonant cavity, so that the temperature and the humidity inside the cavity are maintained, the gradual change type control requirement of the water loss rate in the drying process, particularly in the initial stage is met, the probability of microcracking and explosion of the dried material can be effectively reduced, the drying quality and the reliability are improved, the injection steam pressure is 0 ~ 0.4.4 MPa, the temperature inside the cavity can be regulated after the water vapor absorbs microwave energy, the controllable temperature range is 25 ~ 100 ℃, and the humidity regulation range is 10% ~ 85% relative humidity.

Preferably, the rack is further provided with a water storage tank, the water storage tank is connected with a microwave power source through a circulating water pump and then connected with a steam generator, and the steam generator is connected to the water storage tank to form circulation. When the system is started, the circulating water pump works to continuously suck cooling water out of the water storage tank and start water circulation, the cooling water is cooled by the microwave power source and then reaches the steam generator, and finally returns to the water tank to form continuous water circulation, meanwhile, the steam generator is started, the system controls the steam generated by heating the circulating cooling water through data returned by the temperature and humidity probes installed at the temperature and humidity probe holes, and the steam is injected into the resonant cavity through the steam output pipe of the steam generator. The steam output pipe is a high-temperature silica gel hose.

Preferably, the conveyor belt is controlled by a stepper motor. The stepping motor controls the conveyor belt to feed materials step by step and discharge materials step by step, and can also control the conveyor belt to drive the materials to continuously reciprocate in the resonant cavity in the microwave drying process.

Preferably, the feeding port and the discharging port of the resonant cavity are respectively provided with an openable safety isolation plate.

Preferably, a preparation storage area is arranged on the front side of the feeding end of the conveying belt, and a feeding robot is arranged between the preparation storage area and the feeding end of the conveying belt; the rear side of the discharge end of the conveying belt is provided with a discharge temporary storage area, and a discharge robot is arranged between the discharge end of the conveying belt and the discharge temporary storage area. The feeding robot and the discharging robot can be horizontal joint robots, can grab materials according to program design to carry out feeding and discharging, realize equipment automation, and enable the equipment to be capable of being incorporated into a production line to run.

The microwave power of the metal oxide ceramic material in different stages of microwave drying is adjustable, cracking caused by too fast water loss of the product is avoided, and the product percent of pass and the final product quality are improved; the uniformity of microwave power is improved and the product quality is more stable through the triangular structure design of the resonant cavity and the reciprocating motion design of the conveying belt; in the microwave drying process, water vapor can be supplemented to the resonant cavity, so that the humidity adjustment in the warm drying process is realized; and the robot is adopted to automatically operate feeding and discharging, so that the equipment can be merged into a production line to operate.

Drawings

The invention is further described below with reference to the accompanying drawings.

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic side view of the present invention.

Fig. 3 is a schematic top view of the present invention.

Fig. 4 is a schematic view of the mechanism of fig. 2 according to the present invention at a.

FIG. 5 is a schematic diagram of the structure of FIG. 1 at B according to the present invention.

In the figure: 1. temperature and humidity probe, 2, resonant cavity, 3, steam input hole, 4, steam generator, 5, microwave power source, 6, power absorber, 7, circulating water pump, 8, water storage tank, 9, stepping motor, 10, man-machine interface, 11, operation button, 12, stop button, 13, feeding and discharging button, 14, emergency stop switch, 15, waveguide, 16, three-screw regulator, 17, coupler, 18, circulator, 19, discharging robot, 20, discharging temporary storage area, 21, belt wheel, 22, discharging end, 23, conveyer belt, 24, feeding end, 25, feeding robot, 26, preparation storage area, 27, reflection regulating valve, 28, safety isolation plate.

Detailed Description

The invention is further illustrated by the following specific examples in conjunction with the accompanying drawings.