阅读说明：本技术 一种蒸汽空气能微波一体化微波烘干杀青装置 (Steam air can microwave integration microwave drying device that completes ) 是由 赵善量 于 2019-10-29 设计创作，主要内容包括：本发明公开了一种蒸汽空气能微波一体化微波烘干杀青装置,包括皮带输送机,螺旋上料器设置在皮带输送机起始端,蒸汽杀菌仓设置的皮带输送机起始端,微波杀菌仓设置在皮带输送机的上方,微波杀菌仓的内部固定有至少一个微波发生器；空气能烘干仓设置在皮带输送机的上方,排料斗位于所述空气能烘干仓的外部；控制柜分别与螺旋上料器、皮带输送机、蒸汽发生器、微波发生器或UV杀菌灯连接。本发明集蒸汽灭菌、微波灭菌和UV灭菌为一体,物料依次经过蒸汽、微波和UV灭菌,可以有效的对物料进行杀菌处理。本装置采用多个连续设置蒸汽灭菌仓、微波灭菌仓和UV灭菌仓组成,物料在皮带输送机一次传输即可完成全部灭菌过程。(The invention discloses a steam-air energy microwave integrated microwave drying and enzyme deactivating device which comprises a belt conveyor, wherein a spiral feeder is arranged at the starting end of the belt conveyor, a steam sterilization bin is arranged at the starting end of the belt conveyor, the microwave sterilization bin is arranged above the belt conveyor, and at least one microwave generator is fixed inside the microwave sterilization bin; the air energy drying bin is arranged above the belt conveyor, and the discharge hopper is positioned outside the air energy drying bin; the control cabinet is respectively connected with the spiral feeder, the belt conveyor, the steam generator, the microwave generator or the UV germicidal lamp. The invention integrates steam sterilization, microwave sterilization and UV sterilization, and the materials are sterilized by steam, microwave and UV in sequence, so that the materials can be effectively sterilized. The device is composed of a plurality of continuously arranged steam sterilization bins, a microwave sterilization bin and a UV sterilization bin, and the whole sterilization process can be completed by one-time transmission of materials on a belt conveyor.)

1. The utility model provides a steam air can microwave integration microwave stoving device that completes which characterized in that includes:

the belt conveyor is used for conveying materials;

the spiral feeder is arranged at the starting end of the belt conveyor and is used for conveying materials to the belt conveyor;

the steam sterilization bin is arranged at the starting end of the belt conveyor, a discharge hole of the spiral feeder is positioned above the steam sterilization bin, and the bottom of the steam sterilization bin is connected with a steam generator;

the microwave sterilization bin is arranged above the belt conveyor and is connected with the steam sterilization bin along the transmission direction of the belt conveyor, and at least one microwave generator is fixed inside the microwave sterilization bin;

the microwave sterilization device comprises a belt conveyor, an air energy drying bin, an air energy heat pump, a microwave sterilization bin and a heat pump, wherein the belt conveyor is arranged above the microwave sterilization bin;

the heat collecting device comprises a heat collecting pipe arranged at the top of the air energy drying bin, one end of the heat collecting pipe is fixedly connected with the top of the air energy drying bin, the other end of the heat collecting pipe is fixedly connected with the bottom of the air energy drying bin, and a dehumidifying device and an axial flow fan are sequentially connected on the heat collecting pipe in series;

the discharging part comprises a discharging hopper arranged at the tail end of the belt conveyor, and the discharging hopper is positioned outside the air energy drying bin;

the control cabinet is respectively connected with the spiral feeder, the belt conveyor, the steam generator, the microwave generator or the air energy heat pump, and a control switch for controlling the start and stop of the spiral feeder, the belt conveyor, the steam generator, the microwave generator or the air energy heat pump is arranged on the control cabinet.

2. The steam-air-energy-microwave-integrated microwave drying and enzyme-deactivating device as claimed in claim 1, wherein a feeding hopper is arranged at the bottom of the spiral feeding device, the spiral feeding device comprises a feeding pipe and a screw rod, the screw rod is arranged in the feeding pipe and can rotate in the feeding pipe under the driving of a motor, the bottom end of the feeding pipe is fixedly connected with the bottom of the feeding hopper, and the top end of the feeding pipe is obliquely arranged upwards and fixed above the steam sterilization bin.

3. The microwave drying and water-removing device integrated by steam, air and microwave as claimed in claim 2, wherein a kick-out device is arranged inside the loading hopper, the kick-out device comprises a rotating shaft and kick-out claws, two ends of the rotating shaft are rotatably connected with the side wall of the loading hopper, and 3-4 kick-out claws are fixedly arranged on the rotating shaft.

4. The steam-air-energy microwave integrated microwave drying and water-removing device as claimed in claim 1, further comprising a spiral distributor, wherein the spiral distributor comprises a frame body which is arranged at the bottom of the steam sterilization bin and on the upper belt of the belt conveyor, the frame body is fixed at the joint of the steam sterilization bin and the microwave drying bin, one end of the frame body, which is close to the microwave drying bin, is rotatably connected with a spiral shaft, the spiral shaft is perpendicular to the transmission direction of the belt conveyor, a spiral is arranged on the outer wall of the spiral shaft, and the spiral shaft is connected with a driving device.

5. The steam-air-energy microwave integrated microwave drying and enzyme-deactivating device as claimed in claim 4, wherein the driving device comprises a motor and a speed reducer, an output shaft of the speed reducer is provided with a driving gear, one end of the screw shaft is connected with a driven gear, the driving gear is meshed with the driven gear, and the screw shaft is driven to rotate through the driving gear and the driven gear.

6. The steam-air-energy-microwave integrated microwave drying and enzyme-deactivating device as claimed in claim 1, wherein an air inducing device is arranged at the upper part of the steam sterilizing bin, the air inducing device comprises an air inducing pipe arranged at the top of the steam sterilizing bin, and an exhaust fan is connected in series on the air inducing pipe.

7. The steam-air-energy microwave integrated microwave drying and water-removing device as claimed in claim 1, wherein the steam generator comprises a steam generator body, a water supply device connected with the steam generator body and a control circuit electrically connected with the water supply device.

8. The steam-air-energy microwave integrated microwave drying and enzyme deactivating device as claimed in claim 1, wherein a partition plate is fixedly installed at an upper portion of the microwave sterilizing chamber, the partition plate divides an internal space of the microwave sterilizing chamber into an upper microwave generating region and a lower microwave heating region, the microwave generator is installed above the partition plate, and the belt conveyor penetrates through the microwave heating region.

9. The steam-air-energy-microwave-integrated microwave drying and enzyme-deactivating device as claimed in claim 1, wherein the bottom of the air energy drying bin is provided with at least one air inlet duct, an air inlet end of the air inlet duct is connected with the hot air blower, and an air outlet end of the air inlet duct corresponds to the belt conveyor.

10. The microwave drying and enzyme deactivating device integrated by steam and air energy as claimed in claim 1, wherein the dehumidifying device comprises a dehumidifying medium cylinder, two ends of the dehumidifying medium cylinder are respectively connected with the heat collecting pipes, a moisture absorbing medium is arranged in the dehumidifying medium cylinder, and the moisture absorbing medium comprises one of calcium chloride, quick lime or charcoal.

Technical Field

The invention relates to the technical field of sterilization, in particular to a steam air energy and microwave integrated microwave drying and water-removing device.

Background

The tea fixation is a tea preparation step which is used for destroying and passivating oxidase activity in fresh tea leaves at high temperature, inhibiting enzymatic oxidation of tea polyphenol and the like in the fresh tea leaves, evaporating partial water in the fresh tea leaves to soften the tea leaves, facilitating rolling and shaping, simultaneously dispersing green odor and promoting formation of good aroma.

The microwave heating technology is a result of interaction between polar molecules in the material and a microwave electromagnetic field by absorbing microwave energy by the material, and the microwave heating method is completely different from the traditional heating method and is a process of enabling the heated material to become a heating body without heat conduction.

But the microwave tea wrap device on the existing market structure is comparatively simple, and it is not high to simply use microwave heating box temperature to rise, is unfavorable for quick de-enzyming or increase of production, moreover because the steam dewfall drips, can cause tealeaves yellow with the tealeaves contact, the tea stalk reddens for dry tea color and luster is inconsistent. Therefore, the temperature in the fixation bin needs to be increased in time in the microwave fixation process of the tea leaves, a large amount of moisture and heat are generated when the tea leaves are subjected to batch fixation, and high-temperature moisture needs to be discharged and treated.

The air energy refers to low-grade heat energy contained in the air. The heat pump can absorb heat from air and transfer the heat to high-temperature objects or environment, and the technology is called air source heat pump. The use of heat pumps requires the consumption of electrical or thermal energy. The air source heat pump can be used in multiple fields such as heating, heating and drying, the air energy air heater can collect heat in air and then is used for drying, and certain auxiliary effect can be performed on tea drying.

Therefore, the design of a special steam air energy and microwave integrated microwave drying and water-removing device becomes a technical problem which needs to be solved urgently.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a steam-air energy and microwave integrated microwave drying and water-removing device.

In order to achieve the technical purpose, the technical scheme of the invention is as follows:

the utility model provides a steam air can microwave integration microwave stoving device that completes, includes:

the belt conveyor is used for conveying materials;

the spiral feeder is arranged at the starting end of the belt conveyor and is used for conveying materials to the belt conveyor;

the steam sterilization bin is arranged at the starting end of the belt conveyor, a discharge hole of the spiral feeder is positioned above the steam sterilization bin, and the bottom of the steam sterilization bin is connected with a steam generator;

the microwave sterilization bin is arranged above the belt conveyor and is connected with the steam sterilization bin along the transmission direction of the belt conveyor, and at least one microwave generator is fixed inside the microwave sterilization bin;

the microwave sterilization device comprises a belt conveyor, an air energy drying bin, an air energy heat pump, a microwave sterilization bin and a heat pump, wherein the belt conveyor is arranged above the microwave sterilization bin;

the heat collecting device comprises a heat collecting pipe arranged at the top of the air energy drying bin, one end of the heat collecting pipe is fixedly connected with the top of the air energy drying bin, the other end of the heat collecting pipe is fixedly connected with the bottom of the air energy drying bin, and a dehumidifying device and an axial flow fan are sequentially connected on the heat collecting pipe in series;

the discharging part comprises a discharging hopper arranged at the tail end of the belt conveyor, and the discharging hopper is positioned outside the air energy drying bin;

the control cabinet is respectively connected with the spiral feeder, the belt conveyor, the steam generator, the microwave generator or the air energy heat pump, and a control switch for controlling the start and stop of the spiral feeder, the belt conveyor, the steam generator, the microwave generator or the air energy heat pump is arranged on the control cabinet.

Furthermore, a feeding hopper is arranged at the bottom of the spiral feeding device, the spiral feeding device comprises a feeding pipe and a screw rod, the screw rod is arranged in the feeding pipe and can rotate in the feeding pipe under the driving of a motor, the bottom end of the feeding pipe is fixedly connected with the bottom of the feeding hopper, and the top end of the feeding pipe is obliquely arranged upwards and fixed above the steam sterilization bin.

Furthermore, a kick-out device is arranged inside the feeding hopper and comprises a rotating shaft and kick-out claws, two ends of the rotating shaft are rotatably connected with the side wall of the feeding hopper, and 3-4 kick-out claws are fixedly mounted on the rotating shaft.

Further, still include spiral material distributor, spiral material distributor sets up steam sterilization storehouse with the junction in microwave drying storehouse is used for right commodity circulation on the band conveyer is shared equally, spiral material distributor is including setting up steam sterilization storehouse bottom just is located the framework on the band conveyer upper belt, the framework is fixed steam sterilization storehouse with the junction in microwave drying storehouse, the framework is close to the one end rotation in microwave drying storehouse is connected with a screw axis, the screw axis with band conveyer's transmission direction sets up perpendicularly, be equipped with the spiral on the outer wall of screw axis, the screw axis is connected with drive arrangement.

Furthermore, the driving device comprises a motor and a speed reducer, a driving gear is arranged on an output shaft of the speed reducer, a driven gear is connected to one end of the spiral shaft, the driving gear is meshed with the driven gear, and the spiral shaft is driven to rotate through the driving gear and the driven gear.

Furthermore, an air inducing device is arranged on the upper portion of the steam sterilization bin and comprises an air inducing pipe arranged at the top of the steam sterilization bin, and an exhaust fan is connected to the air inducing pipe in series.

Further, the steam generator includes a steam generator body, a water supply device connected with the steam generator body, and a control circuit electrically connected with the water supply device.

Furthermore, a partition plate is fixedly mounted at the upper part of the microwave sterilization bin, the partition plate divides the inner space of the microwave sterilization bin into an upper microwave generating area and a lower microwave heating area, the microwave generator is mounted above the partition plate, and the belt conveyor penetrates through the microwave heating areas.

Furthermore, the bottom of the air energy drying bin is provided with at least one air inlet duct, the air inlet end of the air inlet duct is connected with the hot air blower, and the air outlet end of the air inlet duct corresponds to the belt conveyor.

Further, dehydrating unit includes a dehumidification medium section of thick bamboo, the both ends of a dehumidification medium section of thick bamboo respectively with the thermal-collecting tube is connected, be equipped with moisture-absorbing medium in the dehumidification medium section of thick bamboo, moisture-absorbing medium includes one in calcium chloride, quick lime or the charcoal.

The invention has the beneficial effects that:

1. according to the steam-air energy and microwave integrated microwave drying and enzyme deactivating device disclosed by the invention, steam sterilization, microwave drying and air energy drying are integrated, materials are subjected to steam sterilization in sequence and then are dried by microwave and air energy, and the materials can be effectively sterilized and dried. The materials can be transmitted once on the belt conveyor to complete the whole sterilization and drying process.

2. The steam air energy and microwave integrated microwave drying and water-removing device provided by the invention utilizes the heat source generated by the air energy heat pump to dry materials, and is a relatively environment-friendly and energy-saving heat supply mode. The hot air temperature can be set according to the requirements of materials, the set temperature can be freely controlled between 10 ℃ and 90 ℃, and the materials are dried by an air energy heat pump after being dried by microwaves, so that the color of the dried materials is fixed in a short time, the dried materials are not deteriorated, and the nutritional ingredients of the dried materials are reserved.

3. According to the steam-air energy and microwave integrated microwave drying and enzyme deactivating device disclosed by the invention, waste gas after steam treatment is timely discharged in the process of sterilizing materials, so that water vapor is effectively prevented from being condensed on the surfaces of the materials in the steam sterilization process, and the subsequent microwave sterilization effect is improved. The microwave heating technology is adopted to dry the materials, so that the microwave drying device has the characteristics of energy conservation, uniform heating and high drying efficiency, and can realize the rapid drying of the materials through microwaves.

4. According to the steam air energy and microwave integrated microwave drying and enzyme deactivating device disclosed by the invention, in the process of drying materials, waste heat in the air energy drying bin is timely concentrated and dehumidified, heat is returned to the air energy drying bin, the materials are dried in the air energy drying bin, and the energy utilization rate is improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram of the internal structure of an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of a hopper and a spiral loader according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of an auger according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an observation window according to an embodiment of the present invention.

In the figure: 1-belt conveyor, 101-driving roller, 102-driven roller, 103-conveying belt, 104-supporting roller, 2-frame, 3-side baffle, 4-spiral feeder, 401-feeding pipe, 402-screw, 5-loading hopper, 6-kickoff, 7-steam sterilizing bin, 8-steam generator, 9-induced air pipe, 10-exhaust fan, 11-microwave sterilizing bin, 12-microwave generator, 13-partition board, 14-air energy drying bin, 15-air energy heat pump, 16-hot air blower, 17-air inlet duct, 18-heat collecting pipe, 19-dehumidifying device, 20-axial flow fan, 21-spiral distributor, 22-frame body, 23-screw shaft, 24-screw, 25-driving gear, 26-driven gear, 27-discharge hopper, 28-control cabinet, 29-observation window, 30-observation door and 31-handle.

Detailed Description

The present invention is further described in conjunction with the appended drawings so that the advantages and features of the present invention may be more readily understood by those skilled in the art and the scope of the invention will be more clearly defined.

As shown in figures 1-5 of the drawings,

the utility model provides a steam air can microwave integration microwave stoving device that completes, includes:

a band conveyer 1 for being directed at material is carried out the transmission, and band conveyer 1's bottom is equipped with frame 2, and the both sides of frame 2 are equipped with a side shield 3 respectively. The bottom of the whole device, particularly the bottom of the belt conveyor 1, can be sealed through the side baffle 3, the temperature can be kept, the safety of materials in the sterilization and transmission process can be improved, and people can be prevented from being injured.

Belt conveyor 1 includes the cylinder, bearing roller and conveyer belt, the conveyer belt is Teflon net conveyer belt, the cylinder includes initiative cylinder 101 and passive cylinder 102, the winding has conveyer belt 103 on initiative cylinder 101 and the driven cylinder 102, initiative cylinder 101 is connected with motor and speed reducer, initiative cylinder 101 and passive cylinder 102 set up the both ends at belt conveyor 1, bearing roller 104 arranges the setting in proper order along belt conveyor 1's direction of transmission, bearing roller 104 sets up the bottom of the upper belt of conveyer belt 103 and is used for bearing conveyer belt 103.

The spiral feeder 4 is arranged at the starting end of the belt conveyor 1 and used for conveying materials to the belt conveyor 1; the bottom of spiral feeder 4 is equipped with loading hopper 5, and spiral feeder 4 includes material loading pipe 401 and screw rod 402, and screw rod 402 sets up in material loading pipe 401 and can be under the drive of motor at material loading pipe 401 internal rotation to with the material from material loading pipe bottom transmission to the top of material loading pipe 401.

The interior of the charging hopper 5 is provided with a kick-out device 6, the kick-out device 6 comprises a rotating shaft and a kick-out claw, two ends of the rotating shaft are rotatably connected with the side wall of the charging hopper, and 3-4 kick-out claws are fixedly arranged on the rotating shaft. The pivot is connected with the rotation motor, and it is rotatory to drive the pivot through rotating the motor to it is rotatory to drive the setting gauge, dials the material, makes the material can be smooth fall on the spiral feeder from the discharge gate of loading hopper.

The bottom end of the feeding pipe 401 is fixedly connected with the bottom of the feeding hopper 5, and the top end of the feeding pipe 401 is obliquely arranged upwards and fixed above the steam sterilization bin 7.

The starting end of the belt conveyor 1 is arranged in the steam sterilization bin 7, the discharge hole of the spiral feeder 4 is positioned above the steam sterilization bin 7, and the bottom of the steam sterilization bin 7 is connected with a steam generator 8; the steam generator 8 includes a steam generator body, a water supply device connected with the steam generator body, and a control circuit electrically connected with the water supply device. An air inducing device is arranged at the upper part of the steam sterilization bin 7 and comprises an air inducing pipe 9 arranged at the top of the steam sterilization bin 7, and an exhaust fan 10 is connected on the air inducing pipe 9 in series.

The microwave sterilization bin 11 is arranged above the belt conveyor 1 and is connected with the steam sterilization bin 7 along the transmission direction of the belt conveyor 1, and at least one microwave generator 12 is fixed inside the microwave sterilization bin 11;

the microwave sterilization bin 11 can be arranged to comprise a plurality of microwave heating boxes which are sequentially arranged in a row and fixedly connected, and at least one microwave generator 12 is fixed on the upper side in each microwave heating box; the microwave generator 12 includes a microwave tube and a microwave tube power supply, wherein the microwave tube power supply is used to convert the commonly used ac power into dc power, thereby creating conditions for the operation of the microwave tube. The microwave tube is the core of a microwave generator, and can provide stable continuous wave microwave power by converting direct current electric energy into microwave energy. The microwave sterilization bin 11 is made of stainless steel, and the heat insulation plate can be arranged on the inner side of the microwave sterilization bin and can be used for keeping the temperature in the microwave sterilization bin 11, so that the sterilization efficiency is improved.

A partition plate 13 is fixedly installed on the upper portion of the microwave sterilization bin 11, the partition plate 13 divides the internal space of the microwave sterilization bin 11 into an upper microwave generation region and a lower microwave heating region, the microwave generator 12 is installed above the partition plate 13, and the belt conveyor 1 penetrates through the microwave heating region. The microwave tube and the microwave tube power supply are arranged above the partition plate 13, a plurality of through holes can be arranged on the partition plate 13, the microwave tube can pass through the through holes on the partition plate, and the microwave heating area at the bottom of the microwave sterilization bin 11 carries out microwave heating.

The air energy drying bin 14 is arranged above the belt conveyor 1 and is connected with the microwave sterilization bin 11 along the transmission direction of the belt conveyor 1, an air energy heat pump 15 is arranged on the side wall of the air energy drying bin 14, and the air energy heat pump 15 is connected with the air energy drying bin 14 through a hot air blower 16;

the bottom of the air energy drying bin 14 is provided with at least one air inlet duct 17, the air inlet end of the air inlet duct 17 is connected with the hot air blower 16, and the air outlet end of the air inlet duct 17 corresponds to the belt conveyor 1.

A heat collecting pipe 18 is arranged at the top of the air energy drying bin 14, one end of the heat collecting pipe 18 is fixedly connected with the top of the air energy drying bin 14, the other end of the heat collecting pipe 18 is fixedly connected with the bottom of the air energy drying bin 14, and a dehumidifying device 19 and an axial flow fan 20 are sequentially connected on the heat collecting pipe 18 in series; the dehumidifying device 19 comprises a dehumidifying medium cylinder, two ends of the dehumidifying medium cylinder are respectively connected with the heat collecting pipes 18, moisture absorbing media are arranged in the dehumidifying medium cylinder, and the moisture absorbing media comprise one of calcium chloride, quick lime or charcoal.

Spiral material distributor 21 sets up the junction in steam sterilization storehouse 7 and microwave drying storehouse 11 for the commodity circulation on belt conveyor 1 is equallyd divide, spiral material distributor 21 is including setting up the framework 22 that just is located the belt of belt conveyor 1 upper belt in steam sterilization storehouse 7 bottom, 22 the framework is fixed in the junction in steam sterilization storehouse 7 and microwave drying storehouse 11, the one end rotation that framework 22 is close to microwave drying storehouse 11 is connected with a screw axis 23, screw axis 23 sets up with belt conveyor 1's transmission direction is perpendicular, be equipped with spiral 24 on the outer wall of screw axis 23, screw axis 23 is connected with drive arrangement. The driving device comprises a motor and a speed reducer, a driving gear 25 is arranged on an output shaft of the speed reducer, a driven gear 26 is connected to one end of the spiral shaft 23, the driving gear 25 is meshed with the driven gear 26, and the spiral shaft 23 is driven to rotate through the driving gear 25 and the driven gear 26.

The discharging part comprises a discharging hopper 27 arranged at the tail end of the belt conveyor 1, and the discharging hopper 27 is positioned outside the air energy drying bin 14;

the control cabinet 28 is respectively connected with the spiral feeder 4, the belt conveyor 1, the steam generator 8, the microwave generator 12 or the air energy heat pump 15, and a control switch for controlling the start and stop of the spiral feeder 4, the belt conveyor 1, the steam generator 5, the microwave generator 12 or the air energy heat pump 15 is arranged on the control cabinet 28.

According to the invention, materials are poured into the feeding hopper 5, are conveyed into the steam sterilization bin 7 through the spiral feeder 4 and automatically fall onto the belt conveyor 1, and are subjected to steam sterilization through steam generated by the steam generator 8 in the falling process. When steam sterilization is performed, under the action of the induced draft fan 10 on the induced draft pipe 9, waste heat after steam sterilization is discharged out of the steam sterilization bin 7 through the induced draft pipe 9.

The material after steam sterilization enters the microwave sterilization bin 11 under the transmission of the belt conveyor 1, and after the material falls onto the belt conveyor 1, the material is accumulated in the frame body 22 under the action of the spiral distributor 21 due to uneven thickness, and is dried in the microwave drying bin 11 after being uniformly distributed on the belt conveyor 1 under the action of the rotation of the spiral shaft 23 and the spiral shaft 24, so that the drying effect is more uniform, and the effect is better. The uniformity of the material passing through microwave heating on the next step is improved, and the problem that the material is not high in product quality due to inconsistent product phase after passing through microwave heating caused by inconsistent heating of microwave heating is avoided. The materials are subjected to microwave sterilization through the microwave sterilization bin 11, the materials after the microwave sterilization are continuously transmitted to the air energy drying bin 14 through the belt conveyor 1 to be dried by the air energy, and finally are unloaded from the discharge hopper 27 at the tail end of the belt conveyor 1 to be boxed or bagged.

In the process of drying the materials, waste heat in the air energy drying bin 14 is timely concentrated and dehumidified, heat is returned to the air energy drying bin 14 through the heat collecting pipes 18, the materials are dried in the air energy drying bin 14, and the energy utilization rate is improved.

Meanwhile, in order to observe whether the device normally works at any time in the material sterilization process, an observation window 29 can be arranged on the side wall in the microwave sterilization bin 11, and the height of the observation window 29 is the same as that of the upper-layer conveying belt of the belt conveyor 1. The observation window 29 is used for observing the working process in the microwave sterilization chamber 11. The observation window 29 is provided with an observation door 30, the observation door 30 is hinged with the observation window 29, the observation window 29 is provided with a self-locking switch, the self-locking switch is connected with the control cabinet, when the observation door 30 is opened from the observation window 29, the self-locking switch is disconnected, and the control cabinet 28 detects the disconnection of the self-locking switch to control the device to stop.

The observation window 29 is provided with an observation door, the observation door is in a closed state during normal work, the observation window is provided with a self-locking switch, the self-locking switch is connected with the control cabinet, when the observation door is closed on the observation window, the microwave sterilization device works normally, and when the observation door is opened from the observation window, the control cabinet detects an opening signal of the self-locking switch and controls the microwave sterilization device to stop. Through set up self-locking switch on the observation window, when can avoiding the observation door to open, microwave sterilization apparatus starts and causes the injury to the staff.

The observation door 30 is provided with a high temperature resistant glass observation mirror, and the observation door is also provided with a handle 31. The high temperature resistant glass on the observation door 30 is convenient for checking the working condition in the microwave sterilization bin, and the working condition in the microwave sterilization bin can be conveniently checked without opening the observation door 30.

The above description is only exemplary of the present invention, and not intended to limit the present invention, and any modifications, equivalents, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Other technical features than those described in the specification are known to those skilled in the art, and are not described in detail herein in order to highlight the novel features of the present invention.