CN2791565Y

CN2791565Y - Microwave rotary vacuum drier

Info

Publication number: CN2791565Y
Application number: CN 200520069918
Authority: CN
Inventors: 张文华; 赵厚林
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-13
Filing date: 2005-03-13
Publication date: 2006-06-28
Anticipated expiration: 2015-03-13

Abstract

The utility model relates to the technical field of drying and sterilizing equipment, particularly low temperature drying equipment using microwave as an energy source under a vacuum condition. More specifically, the utility model relates to a microwave rotary vacuum drier which is provided with a sealing box body. A door is arranged on the box body. An operation panel and a vacuum pumping tube are arranged on the box body. One end of the vacuum pumping tube is communicated with an inner cavity of the box body, and the other end is connected with a vacuum system. A microwave generator is arranged on the inner wall of the upper part of the box body. A drive mechanism and a loading mechanism are arranged in the box body, and are fixedly connected. The microwave rotary vacuum drier of the utility model has the advantages of quick drying speed, even drying, good quality, selective heat drying, high thermal efficiency, small ground occupation of the whole set, and easy cleaning; the utility model is suitable for drying heat sensitive material, conforms to GMP requirements, avoids environmental high temperature and improves working condition.

Description

The microwave rotary vacuum dryer

Technical field

The utility model relates to the drying sterilization equipment technical field, and particularly a kind of is the low temperature drying equipment of the energy with the microwave under vacuum condition, is a kind of microwave rotary vacuum dryer specifically.

Background technology

Paste in the industries such as medicine, food, chemical industry, the drying process of pasty material always are technical barriers.Originally the drying means that is adopted mainly contains following several: the special-purpose spray-drying of medicinal extract, its shortcoming are that equipment is huge, complicated operation, energy resource consumption are big, yield poorly, the material yield is low etc.; Low-temperature vacuum drying utilizes conduction and radiation that heat is passed to material, and drying time is long especially, yields poorly, and labour intensity is big; State type microwave vacuum dryer, its advantage are the shortcomings that has overcome the said equipment, but its fatal problem is that the dry materials degree is inhomogeneous, the overdrying that has, even coking variable color, and what also have does not do, and has a strong impact on the quality of product; Vacuum belt drier appearred again in nearest 2 years, huge except complex structure, equipment, cost an arm and a leg, shortcoming such as it is slow to exist rate of drying equally, and drying time is long.

Summary of the invention

In order to overcome the deficiency of existing drying equipment, the purpose of this utility model provides a kind of microwave rotary vacuum dryer that is suitable for paste, pasty material drying.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of microwave rotary vacuum dryer, has airtight casing, casing is provided with door, door is provided with hinge with casing junction one side, couple positioned opposite has door lock, door is fixedlyed connected by hinge with casing, lock by door lock, guidance panel and vacuum-pumping tube are installed on the casing, vacuum-pumping tube one end is connected with cabinets cavity, the external vavuum pump of the other end links to each other, be installed with start button on the guidance panel, scram button, warning device and PLC controller, on the casing upper inside wall microwave generator is installed, transmission mechanism and charge mechanism are installed in the casing, transmission mechanism is fixedlyed connected with charge mechanism, and charge mechanism comprises swinging mounting, suspension bracket and charging tray, suspension bracket is hinged by bearing pin and swinging mounting, charging tray is arranged on the suspension bracket, and the charging tray bottom remains parallel with ground.After connecting power supply, microwave generator emission electromagnetic wave after treating that dry material receives electromagnetic wave, evaporates moisture or other solvent rapidly, thereby makes dry materials.After starting vavuum pump, form vacuum state in the casing, the moisture vapourizing temperature of material under vacuum state can reduce greatly, thus can be when lower the temperature inside the box the rapid draing material, be suitable for the drying of heat sensitive material.The PLC controller makes the control and the operative intelligenceization of drying machine.

Specifically, above-mentioned transmission mechanism comprises motor, main shaft, reductor, dynamic sealing device and bevel gear, casing is provided with spindle hole, main shaft is arranged in the spindle hole, is provided with dynamic sealing device between main shaft and spindle hole, and spindle centerline is parallel with the cabinets cavity center line, swinging mounting is fixedly mounted on the main shaft, main shaft one end is fixedlyed connected with bevel gear, and bevel gear is fixedlyed connected with reductor, and reductor is fixedlyed connected with motor.

As required, further: the number of the microwave generator of installing on the described casing upper inside wall can be 1～50.

For monitoring the situation in the casing better, so that change operating parameter at any time, automatically control temperature of charge, further: also be provided with vacuum meter, infrared temperature probe and case internal state camera on the described casing, also be provided with case internal state display screen on the described guidance panel, on the described door visor be installed.

For opening door easily, further: also fixedly mount jug on the described door.

The beneficial effects of the utility model are, microwave rotary vacuum dryer of the present utility model, and rate of drying is fast, is tens of times of vacuum conduction type heat driers; Uniform drying, good product quality, for shape, the material that varies in size, degree of drying also is uniformly, gives birth to outer burnt phenomenon in can not producing; The selectivity heat drying, the wet branch of material inside can absorb microwave consumingly, and material itself absorbs seldom, so material temperature is not high, is suitable for the drying of heat sensitive material; Thermal efficiency height, because heat is directly from material inside, loss is less, and the thermal efficiency can be compared with the medicinal extract spray-drying up to more than 80%, and the energy that the per kilogram material is consumed only is 1/10; The complete unit floor space is little; Be easy to clean, meet " GMP " requirement; Avoid high ambient temperature, improve working conditions.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the structural representation of microwave rotary vacuum dryer of the present utility model.

Fig. 2 is the left view of Fig. 1.

Among the figure: 1. vacuum-pumping tube, 2. charge mechanism, 3. casing, 4. hinge, 5. microwave generator, 6. infrared temperature probe, 7. visor, 8. handle, 9. door lock, 10. vacuum meter, 11. guidance panels, 12. door, 13. motor, 14. decelerators, 15. bevel gear, 16. suspension brackets, 17. swinging mountings, 18. main shaft, 19. charging trays, 20. dynamic sealing devices.

The specific embodiment

As Fig. 1, microwave rotary vacuum dryer of the present utility model shown in 2, has airtight casing 3, casing 3 is provided with door 12, door 12 is provided with hinge 4 with casing 3 junctions one side, couple positioned opposite has door lock 9, door 12 is fixedlyed connected by hinge 4 with casing 3, by door lock 9 lockings, on the door 12 visor 7 and handle 8 are installed, guidance panel 11 is installed on the casing 3, vacuum-pumping tube 1, vacuum meter 10, infrared temperature probe 6 and case internal state camera, vacuum-pumping tube 1 one ends and casing 3 intracavity inter-connections, the other end links to each other with vacuum system, be installed with start button on the guidance panel 11, scram button, case internal state display screen, warning device and PLC controller, eight microwave generators 5 are installed on casing 3 upper inside wall, transmission mechanism and charge mechanism 2 are installed in the casing 3, transmission mechanism comprises motor 13, main shaft 18, reductor 14, dynamic sealing device 20 and bevel gear 15, casing 3 is provided with spindle hole, main shaft 18 is arranged in the spindle hole, be provided with dynamic sealing device 20 between main shaft 18 and spindle hole, the center line of main shaft 18 and casing 3 lumen centers line parallels, main shaft 18 1 ends are fixedlyed connected with bevel gear 15, bevel gear 15 is fixedlyed connected with reductor 14, reductor 14 is fixedlyed connected with motor 13, charge mechanism 2 comprises swinging mounting 17, suspension bracket 16 and charging tray 19, swinging mounting 17 is fixedly mounted on the main shaft 18, suspension bracket 16 is hinged by bearing pin and swinging mounting 17, charging tray 19 is arranged on the suspension bracket 16, and charging tray 19 bottoms remain parallel with ground.

Material is placed charging tray 19, open door 12, charging tray 19 is placed on the suspension bracket 16, after connecting power supply, microwave generator 5 tranmitting frequencies are 300～300000MHZ, wavelength is the electromagnetic wave of 1～1000m, after treating that dry material receives electromagnetic wave, utilize microwave in fast-changing high frequency magnetic field, to interact with material molecule, be absorbed and produce fuel factor, microwave energy directly is converted to medium heat energy, makes the wet branch of material inside, be i.e. water or other solvents, produce steam rapidly, the material internal pressure is increased, forms barometric gradient, impel be generally vapor form wet branch fast by inside to flows outside, the wet minute steam that flows to the material surface promptly is extracted into outside the drier by vavuum pump again, thereby makes material dry rapidly.Because swinging mounting 17 is being done uniform rotation under the drive of transmission mechanism in casing 3, being contained in the material of charging tray 19 and the distance of microwave generator 5 constantly alternately changes, make the microwave energy that material received in each charging tray 19 basic identical, therefore the dry materials degree is identical, the material overdrying of having avoided having, coking and the generation of the phenomenon that the material that has is not done have guaranteed the quality of product.

Claims

1, a kind of microwave rotary vacuum dryer, it is characterized in that: have airtight casing (3), casing (3) is provided with door (12), door (12) is provided with hinge (4) with casing (3) junction one side, couple positioned opposite has door lock (9), door (12) is fixedlyed connected by hinge (4) with casing (3), lock by door lock (9), guidance panel (11) and vacuum-pumping tube (1) are installed on the casing (3), vacuum-pumping tube (1) one end and casing (3) intracavity inter-connection, the external vacuum system of the other end, guidance panel is installed with start button on (11), scram button, warning device and PLC controller, on casing (3) upper inside wall microwave generator (5) is installed, transmission mechanism and charge mechanism (2) are installed in the casing (3), charge mechanism (2) comprises swinging mounting (17), suspension bracket (16) and charging tray (19), transmission mechanism is fixedlyed connected with charge mechanism (2), suspension bracket (16) is hinged by bearing pin and swinging mounting (17), charging tray (19) is arranged on the suspension bracket (16), and charging tray (19) bottom remains parallel with ground.

2, microwave rotary vacuum dryer according to claim 1, it is characterized in that: described transmission mechanism comprises main shaft (18), reductor (14), movable sealing (20) and bevel gear (15), casing (3) is provided with spindle hole, main shaft (18) is arranged in the spindle hole, be provided with movable sealing (20) between main shaft (18) and spindle hole, the center line of main shaft (18) and casing (3) lumen centers line parallel, swinging mounting (17) is fixedly mounted on the main shaft (18), main shaft (18) one ends are fixedlyed connected with bevel gear (15), bevel gear (15) is fixedlyed connected with reductor (14), and reductor (14) is fixedlyed connected with motor (13).

3, microwave rotary vacuum dryer according to claim 1 is characterized in that: the number of the microwave generator of installing on described casing (3) upper inside wall (5) is 1～50.

4, microwave rotary vacuum dryer according to claim 1, it is characterized in that: vacuum meter (10), infrared temperature probe (6) and case internal state camera also are installed on the described casing (3), also be provided with case internal state display screen on the described guidance panel (11), on the described door (12) visor (7) be installed.

5, microwave rotary vacuum dryer according to claim 1 is characterized in that: also fixedly mount jug (8) on the described door (12).