阅读说明：本技术 一种高效节能微波干燥机 (High-efficiency energy-saving microwave dryer ) 是由 胡金祥 于 2019-12-11 设计创作，主要内容包括：本发明公开了一种高效节能微波干燥机,包括,干燥室,干燥室的顶端设有微波发生机构,微波发生机构用于发生微波以对干燥室内进行加热；干燥室的顶端设有进风口；工件输送机构,工件输送机构设于干燥室的底端并用于输送工件；热循环机构,包括进风室、风机以及水管,进风室安装于干燥室的顶端；风机安装于进风室内,风机的进口与进风室外部导通；风机的出口与进风口导通；水管用于导入水以用于对微波发生机构进行冷却；水管内的水用于对微波发生机构进行冷却后吸热,并对进风口的空气进行加热。本发明的高效节能微波干燥机,其可导入冷却水对微波发生机构进行冷却,冷却后的水吸热可对进风口的风进行再加热,辅助加热。(The invention discloses a high-efficiency energy-saving microwave dryer, which comprises a drying chamber, wherein the top end of the drying chamber is provided with a microwave generating mechanism, and the microwave generating mechanism is used for generating microwaves to heat the inside of the drying chamber; the top end of the drying chamber is provided with an air inlet; the workpiece conveying mechanism is arranged at the bottom end of the drying chamber and is used for conveying workpieces; the thermal circulation mechanism comprises an air inlet chamber, a fan and a water pipe, wherein the air inlet chamber is arranged at the top end of the drying chamber; the fan is arranged in the air inlet chamber, and an inlet of the fan is communicated with the outside of the air inlet chamber; the outlet of the fan is communicated with the air inlet; the water pipe is used for introducing water for cooling the microwave generating mechanism; the water in the water pipe is used for absorbing heat after cooling the microwave generating mechanism and heating the air in the air inlet. The high-efficiency energy-saving microwave dryer can guide cooling water to cool the microwave generating mechanism, and the cooled water absorbs heat to reheat air at the air inlet and assist in heating.)

1. An efficient energy-saving microwave dryer is characterized by comprising,

the microwave drying device comprises a drying chamber, a microwave generating mechanism and a control device, wherein the top end of the drying chamber is provided with the microwave generating mechanism which is used for generating microwaves to heat the drying chamber; the top end of the drying chamber is provided with an air inlet;

the workpiece conveying mechanism is arranged at the bottom end of the drying chamber and is used for conveying workpieces;

the thermal circulation mechanism comprises an air inlet chamber, a fan and a water pipe, wherein the air inlet chamber is arranged at the top end of the drying chamber; the fan is arranged in the air inlet chamber, and an inlet of the fan is communicated with the outside of the air inlet chamber; the outlet of the fan is communicated with the air inlet; the water pipe is fixedly connected to the top end of the drying chamber and used for introducing water for cooling the microwave generating mechanism; and the water in the water pipe is used for absorbing heat after cooling the microwave generating mechanism and heating the air in the air inlet.

2. The microwave dryer of claim 1, wherein the microwave generating mechanism comprises a microwave generator and a microwave guide tube, both of which are fixed to the top end of the drying chamber; the microwave generator is arranged at the end part of the microwave catheter; the extending direction of the microwave guide pipe is vertical to the conveying direction of the workpiece; the microwave guide pipe is used for conducting the microwaves generated by the microwave generator; the bottom end of the microwave catheter is provided with a plurality of cracks.

3. An energy efficient microwave dryer as claimed in claim 1 wherein there are a plurality of microwave generating means, the plurality of microwave generating means being spaced apart in the direction of conveyance of the workpieces.

4. The microwave dryer of claim 3, wherein the top of the drying chamber is fixedly connected with a mounting plate, and the top wall of the drying chamber is provided with an air outlet; the mounting plate and the top end of the drying chamber form an air cavity at intervals; the air outlet and the air inlet are communicated with the air cavity; a plurality of ventilation openings are arranged on the mounting plate; the air outlet is communicated with an air draft device.

5. The microwave dryer of claim 4, wherein the microwave generating mechanism has partitions on both sides, the top of the partitions is fixed to the top of the drying chamber, and the partitions are inclined from top to bottom away from the microwave generating mechanism; each ventilation opening is positioned between two adjacent partition plates in a one-to-one correspondence manner; the ventilation opening is provided with a filter plate.

6. A microwave dryer with high efficiency and energy saving as claimed in claim 3, wherein each microwave generating mechanism is provided with a first cooling pipe, and the water pipe extends along the conveying direction of the workpiece; the water pipe is communicated with a plurality of second cooling pipes, and each second cooling pipe is correspondingly communicated with each first cooling pipe.

7. An energy-efficient microwave dryer as claimed in any one of claims 1 to 6 wherein said drying chamber is further provided with a water loading mechanism for absorbing microwaves; the starting end and the tail end of the workpiece conveying mechanism are both provided with the water loading mechanism.

8. An energy efficient microwave dryer as claimed in claim 7 wherein said water loading means comprises a plurality of water loading tubes spaced apart in the direction of workpiece transport; a plurality of water load pipes are arranged above and below the conveying end surface of the workpiece conveying mechanism; the extending direction of the water loading pipe is vertical to the conveying direction of the workpieces.

9. An energy-efficient microwave dryer according to any one of claims 1-6 wherein a plurality of microwave unloading mechanisms are arranged below the conveying end face of the workpiece conveying mechanism, and the plurality of microwave unloading mechanisms are distributed at intervals in the conveying direction of the workpiece.

10. The high efficiency energy saving microwave dryer according to claim 9, wherein the microwave unloading mechanism comprises a microwave unloading pipe, the extension direction of the microwave unloading pipe is perpendicular to the conveying direction of the workpiece, and the microwave unloading pipe is used for guiding water.

Technical Field

The invention relates to the technical field of drying equipment, in particular to a high-efficiency energy-saving microwave dryer.

Background

At present, microwave drying is a novel drying mode. When drying, the microwave energy directly acts on the medium molecules to be converted into heat energy, and because the microwave has the penetrating property, the medium is heated inside and outside simultaneously, and heat conduction is not needed, the heating speed is very high, and the drying speed can be shortened by hundreds of times for food with the water content of below 30 percent.

In the microwave dryer, only the microwave generating device generates heat in the drying process, so that the microwave generating energy consumption is large; and the microwave generating device is easy to be damaged due to heating for a long time.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the high-efficiency energy-saving microwave dryer, cooling water can be introduced to cool the microwave generating mechanism, and the cooled water absorbs heat to reheat the air at the air inlet so as to assist in heating.

The purpose of the invention is realized by adopting the following technical scheme:

an efficient energy-saving microwave dryer comprises a drying chamber,

the microwave drying device comprises a drying chamber, a microwave generating mechanism and a control device, wherein the top end of the drying chamber is provided with the microwave generating mechanism which is used for generating microwaves to heat the drying chamber; the top end of the drying chamber is provided with an air inlet;

the workpiece conveying mechanism is arranged at the bottom end of the drying chamber and is used for conveying workpieces;

the thermal circulation mechanism comprises an air inlet chamber, a fan and a water pipe, wherein the air inlet chamber is arranged at the top end of the drying chamber; the fan is arranged in the air inlet chamber, and an inlet of the fan is communicated with the outside of the air inlet chamber; the outlet of the fan is communicated with the air inlet; the water pipe is arranged at the top end of the drying chamber and used for introducing water for cooling the microwave generating mechanism; and the water in the water pipe is used for absorbing heat after cooling the microwave generating mechanism and heating the air in the air inlet.

Further, the microwave generating mechanism comprises a microwave generator and a microwave guide pipe, and the microwave generator and the microwave guide pipe are fixedly connected to the top end of the drying chamber; the microwave generator is arranged at the end part of the microwave catheter; the extending direction of the microwave guide pipe is vertical to the conveying direction of the workpiece; the microwave guide pipe is used for conducting the microwaves generated by the microwave generator; the bottom end of the microwave catheter is provided with a plurality of cracks.

Furthermore, a plurality of microwave generating mechanisms are arranged, and the plurality of microwave generating mechanisms are distributed at intervals in the workpiece conveying direction.

Furthermore, the top end of the drying chamber is fixedly connected with a mounting plate, and the top wall of the drying chamber is provided with an air outlet; the mounting plate and the top end of the drying chamber form an air cavity at intervals; the air outlet and the air inlet are communicated with the air cavity; a plurality of ventilation openings are arranged on the mounting plate; the air outlet is communicated with an air draft device.

Furthermore, the two sides of the microwave generating mechanism are respectively provided with a partition plate, the top end of each partition plate is fixedly connected with the top end of the drying chamber, and the partition plates are gradually inclined from top to bottom away from the microwave generating mechanism; each ventilation opening is positioned between two adjacent partition plates in a one-to-one correspondence manner; the ventilation opening is provided with a filter plate.

Furthermore, each microwave generating mechanism is provided with a first cooling pipe, and the water pipe extends along the conveying direction of the workpiece; the water pipe is communicated with a plurality of second cooling pipes, and each second cooling pipe is correspondingly communicated with each first cooling pipe.

Furthermore, a water load mechanism is arranged in the drying chamber and used for absorbing microwaves; the starting end and the tail end of the workpiece conveying mechanism are both provided with the water loading mechanism.

Further, the water loading mechanism comprises a plurality of water loading pipes which are distributed at intervals in the workpiece conveying direction; a plurality of water load pipes are arranged above and below the conveying end surface of the workpiece conveying mechanism; the extending direction of the water loading pipe is vertical to the conveying direction of the workpieces.

Furthermore, a plurality of microwave unloading mechanisms are arranged below the conveying end face of the workpiece conveying mechanism, and are distributed at intervals in the conveying direction of the workpiece.

Furthermore, the microwave unloading mechanism comprises a microwave unloading pipe, the extension direction of the microwave unloading pipe is perpendicular to the conveying direction of the workpiece, and the microwave unloading pipe is used for guiding water.

Compared with the prior art, the invention has the beneficial effects that: the fan of its thermal cycle mechanism that is equipped with can be with the leading-in drying chamber of outside wind, and simultaneously, the water pipe in the drying chamber can lead to the cooling water and cool off microwave generation mechanism, and the water heat absorption after the cooling can reheat the wind of air intake, and hot-blast entering drying chamber assists the drying, and supplementary drying reduces microwave generation mechanism's energy consumption, and can in time cool down microwave generation mechanism, prolongs its life.

Drawings

FIG. 1 is a cross-sectional view of the overall construction of the present invention;

FIG. 2 is a structural sectional view of a drying chamber according to the present invention;

FIG. 3 is a schematic view showing the overall structure of the drying chamber according to the present invention;

FIG. 4 is a schematic view of the water pipe structure at the top end of the drying chamber according to the present invention;

FIG. 5 is a schematic diagram of the microwave catheter of the present invention;

fig. 6 is a schematic structural diagram of the mounting plate of the present invention.

In the figure: 10. a drying chamber; 11. an air inlet; 12. a wind cavity; 13. an air outlet; 14. a vent; 15. a filter plate; 20. a microwave generating mechanism; 21. a microwave catheter; 211. cracking; 22. a partition plate; 23. a microwave generator; 231. a first cooling pipe; 30. an air inlet chamber; 31. a fan; 40. a workpiece conveying mechanism; 41. unloading the tube by microwave; 50. a water loading mechanism; 51. a water carrying tube; 60. an air draft device; 70. a water load tank.

Detailed Description

The invention will be further described with reference to the accompanying drawings and the detailed description below:

as shown in fig. 1-6, the high-efficiency energy-saving microwave dryer includes a drying chamber 10, a workpiece conveying mechanism 40 and a thermal circulation mechanism, wherein the workpiece conveying mechanism 40 can convey workpieces into the drying chamber 10, a microwave generating mechanism 20 is disposed in the drying chamber 10, and the microwave generating mechanism 20 is configured to generate microwaves to heat the drying chamber 10, so as to heat the workpieces conveyed by the workpiece conveying mechanism 40. In addition, an air inlet 11 is provided at the top end of the drying chamber 10.

Specifically, the heat circulation mechanism includes an air inlet chamber 30, a fan 31 and a water pipe, the air inlet chamber 30 is installed at the top end of the drying chamber 10, the fan 31 is installed in the air inlet chamber 30, an inlet of the fan 31 is communicated with the outside of the air inlet chamber 30, and an outlet of the fan 31 is communicated with the air inlet 11. The water pipe may be fixed to the top end of the drying chamber 10, and may be disposed around the microwave generating mechanism 20 and the air inlet 11. Water may be introduced into the water pipe to cool the microwave generating means 20. The water in the water pipe can absorb heat after cooling the microwave generating mechanism 20, and the water after absorbing heat can heat the air in the air inlet 11.

On the basis of the structure, when the high-efficiency energy-saving microwave dryer of the invention is used, the workpiece can be placed on the workpiece conveying mechanism 40, the workpiece conveying mechanism 40 can convey the workpiece into the drying chamber 10, and meanwhile, the microwave generating mechanism 20 can generate microwaves to heat the drying chamber 10, so that the workpiece conveyed by the workpiece conveying mechanism 40 is heated.

Meanwhile, cooling water can be introduced into a water pipe in the drying chamber 10 to cool the microwave generating mechanism 20, the cooled water absorbs heat to reheat air in the air inlet 11, hot air enters the drying chamber 10 to assist drying and assist drying, energy consumption of the microwave generating mechanism 20 is reduced, the microwave generating mechanism 20 can be cooled in time, and the service life of the microwave generating mechanism is prolonged.

Further, in the present embodiment, the microwave generating mechanism 20 includes a microwave generator 23 and a microwave guide tube 21, the microwave generator 23 and the microwave guide tube 21 are both fixed to the top end of the drying chamber 10, the microwave generator 23 is disposed at the end of the microwave guide tube 21, and the extending direction of the microwave guide tube 21 is perpendicular to the workpiece conveying direction; the microwave guide 21 serves to guide microwaves generated by the microwave generator 23. Specifically, a plurality of slits 211 are provided at the bottom end of the microwave guide 21.

Therefore, when microwave heating is carried out, the microwave generator 23 can be started, microwaves generated by the microwave generator 23 can be guided through the microwave guide pipe 21, the bottom end of the microwave guide pipe 21 is provided with the plurality of cracks 211, namely the microwaves can be transmitted into the drying chamber 10 through the cracks 211 of the microwave guide pipe 21 to dry the surface of a workpiece, the microwaves are firstly transmitted along the direction vertical to the conveying direction of the workpiece through the microwave guide pipe 21 and are led out through the cracks 211, the emission of the microwaves is changed from points to lines or surfaces, the microwaves are heated and dried on all the surfaces of the workpiece, the microwaves are uniformly distributed, and the drying effect is better.

It should be noted that, in the present embodiment, the plurality of slits 211 are distributed at intervals in the extending direction of the microwave guide 21, and the extending direction of the slits 211 is inclined, that is, on the same length of the microwave guide 21, the total length of the inclined slits 211 is greater than the total length of the microwave guide 21, so that the microwave has a larger transmission line (surface), a larger drying surface, and a better drying effect.

Furthermore, a plurality of microwave generating mechanisms 20 may be provided, and the plurality of microwave generating mechanisms 20 are distributed at intervals in the conveying direction of the workpiece, that is, in the case of a large workpiece, the plurality of microwave generating mechanisms 20 may perform microwave drying above the workpiece in a segmented manner, so that the drying of each position of the workpiece is uniform. Of course, the workpiece conveying mechanism 40 may convey a plurality of workpieces to the drying chamber 10 at the same time, and the plurality of microwave generating mechanisms 20 may heat a plurality of workpieces in a one-to-one correspondence manner, and perform microwave drying on the plurality of workpieces at the same time, so that the drying efficiency is high.

Furthermore, a mounting plate can be fixedly connected to the top end of the drying chamber 10, and an air outlet 13 is formed in the top wall of the drying chamber 10. The specific mounting plate and the top end of the drying chamber 10 form an air cavity 12 at intervals, and the air outlet 13 and the air inlet 11 are both communicated with the air cavity 12. In addition, a plurality of ventilation openings 14 are arranged on the mounting plate; the air outlet 13 is communicated with an air draft device 60. Therefore, the fan 31 in the air inlet chamber 30 can heat the external air and then send the heated external air into the air cavity 12, and the heated external air is sent into the drying chamber 10 through the plurality of ventilation openings 14 at the bottom end of the air cavity 12, so that the air supply is uniform.

In the actual drying process, moisture may be generated in the drying chamber 10, and therefore the moisture needs to be discharged outside, so that the air draft device 60 can be started, and the air draft device 60 can draw out the damp-heat gas in the drying chamber 10 to the air cavity 12 through the plurality of ventilation openings 14 and send out the damp-heat gas through the air outlet 13. Of course, the air extracting device 60 can be selected as the blower 31 in the prior art. Certainly, an air outlet chamber can be arranged at the top end of the drying chamber 10, the air draft device 60 is arranged in the air outlet chamber, and a water load box 70 can be arranged between the outlet of the air draft device 60 and the outlet of the air outlet chamber, namely, the drawn air can pass through the water load box 70, and the water in the water load box 70 can absorb microwaves, so that the microwaves are prevented from being led out and radiation to the outside is prevented.

Furthermore, partition plates 22 may be disposed on both sides of the microwave generating mechanism 20, the top ends of the partition plates 22 are fixedly connected to the top end of the drying chamber 10, and specifically, the partition plates 22 are gradually inclined from top to bottom away from the microwave generating mechanism 20; the air vents 14 are correspondingly positioned between two adjacent partition plates 22; a filter plate 15 is arranged at the ventilation opening 14. Thus, when air is sucked by the air suction device 60, the air can be guided out through the ventilation opening 14 between the two partition plates 22, and the partition plates 22 can block partial microwaves, so that the influence of a large amount of microwaves on drying is prevented from being taken away in the air suction process, and radiation is also caused to the outside. Of course, the filter plate 15 provided in the ventilation opening 14 can filter the supplied air, and the filter holes of the filter plate 15 can further uniformize the supplied air.

Further, a first cooling pipe 231 may be provided on each microwave generating mechanism 20, and particularly, when the microwave generating mechanism 20 includes the microwave generator 23 and the microwave guide 21, the first cooling pipe 231 may be provided on a housing of the microwave generator 23. The water pipe extends in the workpiece conveying direction, and a plurality of second cooling pipes are connected to the water pipe, and each second cooling pipe is connected to each first cooling pipe 231. So, when each microwave generation mechanism 20 operation, accessible water pipe is interior to be led into water, and water can reach each second cooling tube through the water pipe, and each second cooling tube is again with leading-in first cooling tube 231 of each microwave generator 23 of water in, cools down, and the segmentation is cooled down a plurality of microwave generation mechanisms 20 simultaneously promptly, and cooling efficiency is higher, and the cooling is even.

Further, a water loading mechanism 50 may be further disposed in the drying chamber 10, specifically, the water loading mechanism 50 is configured to absorb microwaves, the water loading mechanism 50 is disposed at the beginning end and the end of the workpiece conveying mechanism 40, that is, the water loading mechanism 50 is disposed at both the workpiece inlet end and the workpiece outlet end of the drying chamber 10 to absorb microwaves, that is, when a workpiece enters and exits, microwaves leaked from the end of the drying chamber 10 may be respectively absorbed by the water loading mechanisms 50 at both ends of the workpiece conveying mechanism 40, so as to prevent radiation from being generated to the outside.

Further, in this embodiment, the water loading mechanism 50 includes a plurality of water loading pipes 51, specifically, the plurality of water loading pipes 51 are distributed at intervals in the workpiece conveying direction, the extending direction of the water loading pipes 51 is perpendicular to the workpiece conveying direction, water is introduced into the plurality of water loading pipes 51, water media for absorbing microwaves are distributed in both the workpiece conveying direction and the direction perpendicular to the workpiece conveying direction, and the absorption surface formed by the plurality of water loading pipes 51 is large, so that the microwave absorption effect is better. In addition, a plurality of water loading pipes 51 are arranged above and below the conveying end face of the workpiece conveying mechanism 40, water is arranged above and below the workpiece conveying mechanism 40 to absorb microwaves, and the radiation protection effect is better.

Further, a plurality of microwave unloading mechanisms may be disposed below the conveying end face of the workpiece conveying mechanism 40, and the plurality of microwave unloading mechanisms are distributed at intervals in the conveying direction of the workpiece. That is, when the workpiece is placed on the workpiece conveying mechanism 40, and the size of the workpiece is small, the conveying end face of the workpiece conveying mechanism 40 is not completely covered, and the microwaves are used in the drying chamber 10, the microwaves on both sides of the workpiece are not absorbed by the workpiece, and are concentrated on the conveying end face of the workpiece conveying mechanism 40, so that the microwaves are unevenly distributed, therefore, a plurality of microwave unloading mechanisms are arranged below the conveying end face of the workpiece conveying mechanism 40, and the microwaves which are not absorbed by the workpiece can be absorbed, so that on one hand, the microwaves are prevented from leaking from the lower part of the workpiece conveying mechanism 40 to cause radiation, on the other hand, the microwaves in the drying chamber 10 are evenly distributed, the microwave density is uniform, and the drying and forming quality.

The microwave generating mechanisms 20 can also be provided in plurality, and the plurality of microwave generating mechanisms 20 and the plurality of microwave unloading mechanisms are arranged in a one-to-one correspondence manner, so that the workpieces can be placed on the conveying end face of the workpiece conveying mechanism 40 and correspond to the position below the microwave generating mechanism 20, the microwaves emitted by the microwave generating mechanisms 20 are directly absorbed, the redundant microwaves can be directly absorbed by the corresponding microwave unloading units, and the microwave drying effect is more uniform.

Further, the microwave unloading mechanism comprises a microwave unloading pipe 41, the extending direction of the microwave unloading pipe 41 is perpendicular to the workpiece conveying direction, and the microwave unloading pipe 41 is used for guiding water. Thus, water can be introduced into the microwave unloading pipe 41, and the water can be used as an aqueous medium for microwave absorption, and microwave absorption can be performed in the width direction of the workpiece conveying end face.

It should be noted that the water loading pipe 51 and the microwave unloading pipe 41 can be non-metal pipes (such as plastic water pipes) in the prior art.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.