CN107373712B

CN107373712B - Far infrared drying equipment

Info

Publication number: CN107373712B
Application number: CN201710625706.0A
Authority: CN
Inventors: ***
Original assignee: Nantong Ruilong New Material Co ltd
Current assignee: NANTONG RUILONG NEW MATERIAL Co.,Ltd.
Priority date: 2017-07-27
Filing date: 2017-07-27
Publication date: 2020-06-26
Anticipated expiration: 2037-07-27
Also published as: CN107373712A

Abstract

The invention discloses far infrared drying equipment which comprises a drying box, a solar heat collecting plate, a gas injection vacuum pump set and a far infrared generator, wherein the upper surface of the drying box is connected with the solar heat collecting plate in parallel through a supporting frame, the lower surface of the solar heat collecting plate is rotatably connected with an overhead heat collector arranged at the top of the drying box through a universal wheel, two ends of the overhead heat collector are connected with side heat collectors through pipelines, the far infrared generator is connected to the inner surface of the drying box in parallel, and two ends of the far infrared generator are slidably connected to the upper end of a rotating disc in the drying box through mounting adjusting plates. The invention utilizes far infrared to radiate and transfer heat to the materials and the clapboard to convectively transfer heat to the materials, thereby avoiding the nonuniformity of heating, ensuring the quality of the materials, shortening the drying time, realizing higher vacuum degree and adjustable size, realizing adjustable irradiation distance, preventing the dissipation of heat and further achieving the purpose of saving energy.

Description

Far infrared drying equipment

Technical Field

The invention relates to the technical field of drying equipment, in particular to far infrared drying equipment.

Background

Dehydrated vegetables refer to a class of processed vegetable products in which the water content of the vegetables is reduced to 4% -13% by hot air drying or other drying means. At present, dehydrated vegetables in China form three main categories: the seasoning is a side dish in fast food, seasonings such as chilli powder and onion powder used as seasonings, and a vegetable substitute. The vegetable dehydration industry in China adopts normal-pressure hot air drying for 90 percent, and the method has the advantages of low equipment cost and simple operation, but has the defects of low energy utilization rate and high energy consumption cost. The existing novel drying technology is better in scale production and application and is a vacuum freeze drying technology, and products produced by the technology are good in quality, but also have the defect of high energy consumption and are expensive. With the increasingly prominent energy problem, the research on energy-saving dehydrated vegetables has more and more practical significance.

Although the application of the low-temperature heat pump drying technology to the drying of food has obvious advantages, the too low drying temperature limits the drying speed, and the drying productivity is also influenced; also, the low-temperature slow-speed drying process may cause a problem of microbial proliferation. Currently, there are some new refrigerants that can use higher drying temperatures. For example, using refrigerant R134a, the drying temperature can be maintained at about 75 ℃ without heating. Of course, at such high drying temperatures, the advantages of low temperature drying are difficult to manifest, particularly for heat sensitive materials. The nature of the heat pump dehumidification drying is also convection drying, and the heat transfer is convection transfer of hot air, which is suitable for drying particles but not suitable for drying liquid or powder materials. Therefore, the application range of the heat pump drying is limited to the granular or flaky materials. Like vacuum drying and freeze drying, heat pump drying is preferably performed in batch mode, which is more advantageous for sealing the drying cabinet, but there is also a combination of heat pump dehumidification and continuous drying for drying gels and vegetables. The continuous heat pump drying system needs higher design, manufacturing and engineering installation costs, and the existing hot air drying technology has the defects of overlong drying time, overhigh temperature and great influence on quality deterioration of materials (particularly heat-sensitive materials). Since the temperature of the discharged exhaust gas is still very high, the utilization rate of heat energy is low.

Disclosure of Invention

In order to achieve the purpose, the invention provides the following technical scheme: a far infrared drying device comprises a drying box, a solar heat collecting plate, a gas injection vacuum pump set and a far infrared generator, wherein the upper surface of the drying box is connected with the solar heat collecting plate in parallel through a supporting frame, an overhead heat collector is arranged at the top of the outer side of the drying box, a drying chamber is arranged in the drying box, a side heat collector is arranged on the inner wall of the drying chamber, the lower surface of the solar heat collecting plate is rotatably connected with the overhead heat collector through universal wheels, two ends of the overhead heat collector are connected with the side heat collector through pipelines, and the overhead heat collector and the side heat collector are connected with the drying chamber in the drying box through pipelines; and still be provided with the fan at the left end of drying chamber, far infrared generator parallel connection is at the internal surface of drying cabinet, the both ends of far infrared generator pass through installation regulating plate sliding connection in the inside rolling disc upper end of drying cabinet, the lower extreme of rolling disc has the motor shaft through the coupling joint, the bottom of motor shaft passes the bottom of drying cabinet and extends to the outside of drying cabinet, and the one end that the motor shaft extends to the drying cabinet bottom outside is connected with the rotation motor, be connected with gas injection vacuum pump group through vacuum pump interface on the front of drying cabinet, the output of gas injection vacuum pump group is connected with the water cooling tower.

As a preferred technical scheme of the invention, the gas injection vacuum pump unit comprises a vacuum chamber, a vacuum pump unit and a gas injector, the vacuum pump unit is fixedly installed in the vacuum chamber, the upper end of the vacuum chamber is connected with a gas cavity in the gas injector through a connecting hole, the right end of the gas injector is provided with a gas inlet interface, the input end of the gas inlet interface is connected with the gas cavity through a connecting pipe, the upper end of the gas cavity is fixedly provided with a chassis, and the outer surface of the chassis is provided with a horn mouth.

As a preferred technical scheme, the solar heat collecting plate comprises a heat absorbing plate, a sealing plate and a transparent cover plate, the heat absorbing plate is arranged on the upper surface of a bottom plate of the heat collecting plate in parallel, the end part of the heat absorbing plate is connected with the bottom plate of the heat collecting plate through the sealing plate on the periphery of the heat absorbing plate, a heat insulating layer is further arranged at the front end of the heat absorbing plate, an air duct partition plate and an air guide plate are further arranged on the upper surface of the heat absorbing plate, the air duct partition plate and the air guide plate are vertically arranged between the air duct partition plate and the air guide plate, the air duct partition plate and the air guide plate are connected with the sealing plate through the transparent cover plate on the upper surface of the heat absorbing plate.

According to a preferable technical scheme of the invention, the far infrared generator comprises a distribution plate, a heat insulation plate and a catalyst plate, wherein the heat insulation plate is laid on the upper surface of the distribution plate, the heat insulation plate is fixedly installed on the upper surface of the heat insulation plate, the catalyst plate is arranged on the upper surface of the heat insulation plate, and a filter screen layer is fixedly installed on the upper surface of the catalyst plate.

As a preferable technical solution of the present invention, a moisture exhaust port is further fixedly installed on a lower surface of the drying chamber.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the drying box is arranged, the drying chamber is arranged in the drying box, the heat collector and the drying chamber are arranged into an integral structure, the heat collector is rotatably connected with the drying chamber through the universal wheels, and the inclination angle of the heat collector can be adjusted along with the height of the sun. According to the change of the solar direction, the azimuth angle of the heat collector can be changed along with the change of the direction of the drying chamber, the heat collector can well track the solar direction, the light harvesting time of the heat collector is prolonged, air is sucked from the heat collector on the side surface when the drying equipment performs drying operation, and the heat collector heats the air under the action of sun radiation; the hot air enters the drying chamber under the driving of the fan; the hot air heats the materials, the moisture is discharged, and the moisture content of the materials is reduced; when the airflow is discharged from the moisture-discharging air outlet of the drying chamber, part of damp and hot air in the drying chamber and water vapor evaporated from the materials are taken away; a part of hot air enters the overhead heat collector, circularly heated and then enters the drying chamber again, so that the heat is circularly utilized; and the inside of the drying box is also provided with a far infrared generator in a combined manner, the far infrared transmits heat to the material by radiation and the clapboard transmits heat to the material by convection, thereby avoiding the unevenness of heating, ensuring the quality of the material, shortening the drying time, not only realizing higher vacuum degree and adjustable size, but also realizing adjustable irradiation distance and variable drying power. In the drying process, the material can rotate along with the material tray, the radiation is more even, has solved the inhomogeneous problem of far infrared radiation in the heating process, in order to reduce the heat that looses because heat-conduction loses, the shell structure of drying cabinet adopts bilayer structure, prevents thermal scattering and disappearing to the mesh of energy saving has been reached.

Drawings

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

FIG. 2 is a schematic view of the heat collector of the present invention;

FIG. 3 is a schematic structural view of a solar collector panel according to the present invention;

FIG. 4 is a schematic view of the far infrared generator according to the present invention;

FIG. 5 is a schematic view of the door mechanism of the present invention;

FIG. 6 is a block diagram of the structure of the air distribution plate of the present invention;

FIG. 7 is a schematic view of the structure of a drying chamber according to the present invention;

FIG. 8 is a schematic diagram of the gas injection vacuum pump assembly of the present invention;

fig. 9 is a schematic structural diagram of a seal structure layer according to the present invention.

The reference numbers in the figures are:

1-drying oven; 2-solar heat collecting plate; 3-gas injection vacuum pump group; 4-a far infrared generator;

100-rotating disc; 101-a coupler; 102-a motor shaft; 103-a rotating motor; 104-vacuum pump interface; 105-a water cooling tower; 106-gear card slot; 107-rotating rollers; 108-insulating glue; 109-sealing the structural layer; 110-O type seal ring; 111-oil seal layer; 112-a bearing; 113-horn shaped electric heating plate; 114-a support sheet; 115-a door mechanism; 116-a die shank; 117-air inlet; 118-a reinforcement plate; 119-resistance wire; 120-air homogenizing plate; 121-air outlet holes;

200-universal wheels; 201-overhead collector; 202-side heat collector; 203-a fan; 204-a drying chamber; 205-a hose; 206-a heat collector air inlet is arranged on the side; 207-a catheter; 208-a heat sink plate; 209-sealing plate; 210-a transparent cover plate; 211-heat collecting plate bottom plate; 212-an insulating layer; 213-air duct partition; 214-a wind deflector; 215-an air inlet; 216-outlet port; 217-material tray; 218-a tray frame; 219-moisture removal port; 220-a gasket;

300-a vacuum chamber; 301-vacuum pump group; 302-a gas injector; 303-connecting hole; 304-an air cavity; 305-an air intake interface; 306-a connecting tube; 307-chassis; 308-bell mouth; 309-riser; 310-a wear resistant layer; 311-rubber gaskets;

400-installing an adjusting plate; 401-a distribution plate; 402-a thermal insulation board; 403-catalyst plate; 404-a heat insulation plate; 405-a screen layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1 to 9, the present invention provides a technical solution: a far infrared drying device comprises a drying box 1, a solar heat collecting plate 2, a gas injection vacuum pump set 3 and a far infrared generator 4, wherein the upper surface of the drying box 1 is connected with the solar heat collecting plate 2 in parallel through a supporting frame, the lower surface of the solar heat collecting plate 2 is rotatably connected with an overhead heat collector 201 arranged at the top of the drying box 1 through a universal wheel 200, two ends of the overhead heat collector 201 are connected with side heat collectors 202 through pipelines, the side heat collectors 202 are arranged on the inner wall of a drying chamber 204 in the drying box 1, the overhead heat collector 201 and the side heat collectors 202 are connected with the drying chamber 204 in the drying box 1 through pipelines, a fan 203 is further arranged at the left end of the drying chamber 204, two centrifugal fan tables are selected, air heated by the heat collectors 203 is input into the drying chamber for forced ventilation and moisture removal, so that the air transmission quantity at the air inlet is larger. The far infrared generator 4 is connected in parallel to the inner surface of the drying box 1, two ends of the far infrared generator 4 are slidably connected to the upper end of the rotating disc 100 inside the drying box 1 through the installation adjusting plate 400, the irradiation distance between the far infrared generator 4 and the rotating disc 100 is adjusted through the installation adjusting plate 400, the lower end of the rotating disc 100 is connected with the motor shaft 102 through the coupler 101, the bottom end of the motor shaft 102 penetrates through the bottom of the drying box 1 and extends to the outside of the drying box 1, one end of the motor shaft 102 extending to the outside of the drying box 1 is connected with the rotating motor 103, the rotating motor 103 is used for providing selective kinetic energy, so that the rotating disc 100 rotates in the drying process to reduce the nonuniformity of radiation, accelerate the circulation of air in the drying box and accelerate drying, and the front surface of the drying box 1 is connected with the gas jet vacuum pump set 3 through, the output end of the gas injection vacuum pump unit 3 is connected with a water cooling tower 105, and the lower surface of the drying box 1 is also connected with a rotating roller 107 in a sliding manner through a gear clamping groove 106.

As shown in fig. 1 and 9, the lower surface of the drying box 1 connects the motor shaft 102 and the rotating motor 103 together by means of punching, the outer surface of the motor shaft 102 is further paved with an insulating glue 108, a sealing structure layer 109 is adopted at the bottom of the drying box 1 around the through hole, the sealing structure layer 109 is composed of an O-shaped sealing ring 110, an oil seal layer 111 and a bearing 112, the O-shaped sealing ring 110 is paved on the outer surface of the motor shaft 102, the lower end of the motor shaft 102 is further connected with the bearing 112, the lower surface of the bearing 112 is connected with the rotating motor 103 through a coupler 101, a support sheet 114 is further arranged on the inner wall of the O-shaped sealing ring 110, the inner surface of the support sheet 114 is connected with the coupler 101 through the oil seal layer 111, and a gap between the through hole arranged at the bottom end of the drying box 1 and the motor shaft 102 is, preventing the occurrence of air leakage inside the drying cabinet 1 and untight connection with the motor shaft 102.

As shown in fig. 2, the top-mounted heat collector 201 is connected in parallel to the outer surface of the drying chamber 204, two ends of the top-mounted heat collector 201 are communicated with the inner wall of the drying chamber 204 through a hose 205, the side-mounted heat collector 202 is arranged at the upper end of the interior of the drying chamber 204, the left end of the side-mounted heat collector 202 is provided with a side-mounted heat collector air inlet 206, the right end of the side-mounted heat collector 202 is communicated with the outer wall of the drying chamber 204 through a conduit 207, and combined heat supply is performed by combining solar energy and an electric heating device in order to achieve continuous drying operation of. According to the drying characteristic requirement of material, at the external control system of drying equipment, and control system embeds there is temperature sensor, can set up the temperature lower limit value in the drying chamber, it is not enough to penetrate when the sun is good at, when the temperature is less than the temperature lower limit value in the drying chamber, control system can open automatically that side puts heat collector 202 and overhead heat collector 201, let in the drying chamber inside with the hot gas flow through the pipeline, provide the required heat of drying, when the temperature is higher than the temperature lower limit value in the drying chamber, electric heater unit can automatic break, stop the heat supply. The circulation is reciprocating, the heat supply is automatically completed, and the whole device only needs external power supply when the solar power supply is insufficient, so that the automatic heat supply is realized.

As shown in fig. 3, the solar heat collecting plate 2 includes a heat absorbing plate 208, a sealing plate 209, a transparent cover plate 210 and a heat collecting plate bottom plate 211, the heat absorbing plate 208 is juxtaposed on the upper surface of the heat collecting plate bottom plate 211, the end of the heat absorbing plate 208 is connected with the heat collecting plate bottom plate 211 through the sealing plate 209 around the heat absorbing plate 208, the transparent cover plate 210 is sealed on the upper surface of the heat absorbing plate 208, the heat absorbing plate 208 receives the energy of the sun radiation to heat the air between the heat absorbing plate 208 and the transparent cover plate 210, the fan 203 is powered by an external power supply, the spiral blade inside the fan 203 rotates after the fan 203 is started to increase the gas pressure, and the high-temperature gas is output, so as to output heat, and the fan. The heat insulation layer 212 is further arranged at the front end of the front face of the heat absorption plate 208, a layer of high-temperature resistant rock wool is additionally arranged between the heat insulation layer 212 and the heat absorption plate 208, the influence of temperature on the heat insulation layer 212 is reduced, the service life of the heat insulation layer is prolonged, the solar energy use efficiency is improved, and the air duct partition plate 213 and the air deflector 214 are further arranged on the upper surface of the heat absorption plate 208 and used for improving the heat collection efficiency; the air deflector 214 is a passage for hot air to enter the drying equipment and is a main component for communicating the overhead heat collector 201 with the air exchange inside the drying box 1, so that smooth air circulation in the drying box 1 is ensured, the flow resistance is reduced, and the whole air deflector 214 adopts a steel wire hose as an air guide pipeline, so that the service life is long, and the cost is low. Meanwhile, the steel wire hose can form any bending angle within a certain range, and the gas exchange collection between the heat collector and the interior of the drying chamber is facilitated. And the surface of the pipeline is smooth, so that the resistance in the air flowing process is reduced. The air duct partition plate 213 and the air deflector 214 are vertically arranged, the upper surface of the heat absorbing plate 208 is connected with the air duct partition plate 213 and the air deflector 214 together through the transparent cover plate 210, the left end of the sealing plate 209 is provided with an air inlet 215, the right end of the sealing plate 209 is provided with an air outlet 216, a serpentine air duct is formed between the air inlet 215 and the air outlet 216, the air duct partition plate 213 increases the circulation path of air, and the heat exchange capacity between the air and the heat absorbing plate is improved; the air deflector 214 improves the uniformity of the air in the air duct and reduces the system resistance.

The sealing plate 209 is made of a wood material, so that the heat conduction efficiency is low, the cost is low, the transparent cover plate 210 is a PC sunlight plate, the heat collection capacity of the heat collector adopting the PC sunlight plate is superior to that of the heat collector adopting toughened glass under the same condition, the cost of the sunlight plate is lower, the heat absorption plate is an embossing pot plate with the thickness of 0.7mm, the surface of the embossing pot plate is provided with a plurality of bulges with the thickness of 0.2mm, and the quantity of the bulges generated by the reflection of sunlight is reduced compared with that of a common pot plateThe heat absorption performance of the heat absorption plate is improved; the insulating layer 212 is 18kg/m³The polystyrene board with the density is light in weight, good in heat preservation performance and low in price.

As shown in fig. 5, a door mechanism 115 is further fixedly installed at the left end of the drying oven 1, a horn-shaped electric heating plate 113 is further fixedly installed on the inner wall of the air inlet end of the door mechanism 115, an air inlet 117 is formed in the horn-shaped electric heating plate 113, a resistance wire 119 is further wound on the inner surface of the horn-shaped electric heating plate 113, an air uniform plate 120 is arranged at the right end of the resistance wire 119 through a support, the air uniform plate 120 is fixedly installed on the inner wall of the horn-shaped electric heating plate 113, the door mechanism 115 is provided with the horn-shaped electric heating plate 113, when a power supply device is externally connected, the resistance wire arranged inside the horn-shaped electric heating plate 113 is used as a core heating element, the resistance wire 119 is annularly installed on an insulating support frame, the support frame is fixed at the horn-shaped air inlet 117, the small end of the air inlet 117 is directly installed on the door mechanism 115 of the drying device, so, the heating effect is good, and the heat utilization efficiency is higher.

As shown in fig. 6, the surface of the air uniforming plate 120 is provided with a plurality of air outlets 121, the air duct entering from the air inlet of the drying equipment is divided into three air ducts through the plurality of air outlets 121 on the surface of the air uniforming plate 120, the air flow is guided to three directions through the three air ducts, the pressure of the air volume entering from the air inlet on the air duct can be reduced, the service life of the air uniforming plate is prolonged, the hot air changes the flow direction under the guiding action of the air duct, and is uniformly dispersed, so as to achieve the effect of uniformly distributing the air volume in the drying chamber, a die handle is fixedly installed at the center of the air uniforming plate 120, a reinforcing plate 118 is further arranged between the die handle and the air uniforming plate 120, and the die handle, the air uniforming plate 120 and the reinforcing plate 118 can be connected through positioning pins and screws, so as to effectively ensure the compression. The bottom end of the reinforcing plate 118 is fixedly connected with the inner wall of the horn-shaped electric heating plate 113, the air homogenizing plate 120 and the horn-shaped electric heating plate 113 can be tightly connected through the reinforcing plate 118, the phenomenon that the air homogenizing plate 120 is not perpendicular to the inner wall of the air inlet 117 due to overlarge air speed and accordingly the air channel is changed is avoided, the air homogenizing plate 120 is added, hot air at the air inlet is uniformly dispersed, the vortex accident phenomenon is avoided, the flowing directivity of the hot air is good, the timely heat exchange between materials and the hot air is guaranteed, and the drying speed is accelerated. Meanwhile, after the air distribution plate 120 is added, the air flow resistance of the air flow entering from the box door mechanism 115 to the material tray is reduced, and the flowability of the hot air in the drying chamber is improved.

As shown in fig. 7, the two ends of the drying chamber 204 are tapered ventilation ports, and the drying chamber 204 is of a box structure and used for storing dried articles, and has a simple structure and convenient installation.

The lower surface of the drying chamber 204 is also fixedly provided with a moisture discharging port 219, a material tray 217 is fixedly arranged in the drying chamber 204, the lower surface of the material tray 217 is connected with the lower surface in the drying chamber 204 through a tray frame 218, the material tray 217 adopts a net-shaped structure design, a reverse thread is arranged at the net port of the material tray 217 and is fixedly connected with the tray frame 218 through a gasket 220, and the tray frame 218 is composed of a plurality of sets of support rods with threads. The drying chamber 204 is designed with a tapered air inlet port, and hot air enters from the air inlet port under the action of certain pressure. At the conical port, the cross section area of the air flow channel is increased, the air pressure is reduced, and the air is gradually diffused, so that the effect of dispersing the air volume is achieved. The cross section area of the air flow channel is slowly and gradually changed by adopting the design of the conical port, so that the phenomena of swirl accidents and dead angles of air in the flowing process are reduced. Simultaneously, the guide effect of toper port makes amount of wind dispersion and disperse, can make the amount of wind evenly distributed in the drying chamber to a certain extent.

In the drying chamber, when carrying out drying operation, through the disk rack 218 of installation in the drying chamber and the connecting rod on the disk rack 218, pass through the inside toper air inlet port of drying chamber 204 with the material, send into inside the drying chamber 204, utilize the connecting rod to connect material dish 217, make the material business turn over drying chamber simple and convenient, utilize the disk rack design that many connecting rods are constituteed, can adjust the relative height of material dish 217, make not co-altitude material dish 217 realize the layering and load, the area of contact of material and hot-air has been improved, the heat exchange process of material and hot-air has been accelerated, be favorable to improving drying speed. The frame of the material tray 217 is formed by angle steel brans, and the air-permeable bamboo curtain is installed at the tray bottom, so that the structure is simple and the cost is low.

As shown in fig. 4, the far infrared generator 4 includes a distribution plate 401, an insulation board 402 and a catalyst board 403, the insulation board 404 is laid on the upper surface of the distribution plate 401, the insulation board 402 is fixedly mounted on the upper surface of the insulation board 404, the catalyst board 403 is arranged on the upper surface of the insulation board 402, the filter screen layer 405 is fixedly mounted on the upper surface of the catalyst board 403, the far infrared generator 4 is powered by an external power supply, when the electric heater inside the far infrared generator 4 is powered on to raise the temperature to 107 ℃, the electric heater does not work any more, and when natural gas and air are introduced from the air inlet 117 of the door mechanism 115, far infrared rays (the wavelength of which is between 3 and 7 μm), a small amount of carbon dioxide and water vapor can be generated under the action of the catalyst. Because the temperature of the chemical reaction is lower than the ignition point (682 ℃) of natural gas, no flame exists during combustion, and as long as sufficient oxygen and coal gas (or natural gas) are supplied, the infrared radiation heat energy is continuously generated.

As shown in fig. 8: the gas injection vacuum pump unit 3 comprises a vacuum chamber 300, a vacuum pump unit 301 and a gas injector 302, wherein the vacuum pump unit 301 is fixedly installed inside the vacuum chamber 300, the vacuum pump unit 301 is connected with the drying box 1 through a vacuum pump interface 104, the upper end of the vacuum chamber 300 is connected with a gas cavity 304 inside the gas injector 302 through a connecting hole 303, the right end of the gas injector 302 is provided with a gas inlet interface 305, the gas inlet interface 305 is connected with the gas cavity 304 through a connecting pipe 306, the upper end of the gas cavity 304 is fixedly provided with a base plate 307, the gas cavity 304 is hermetically connected with the base plate 307 through a rubber gasket 311, the outer surface of the base plate 307 is provided with a bell mouth 308, the upper end of the bell mouth 308 is also fixedly provided with a lifting pipe 309, the tail end of the lifting pipe 309 is connected with a water cooling tower 105, the influence of gas impurities on the inner wall of the riser tube 309 when the gas pressure passes through the inner wall of the riser tube 309 is reduced through the wear-resistant layer 310, the service life of the riser tube 309 is prolonged, the output end port of the riser tube 309 is designed in an arc-shaped structure, the distance between the top end of the riser tube 309 and the top end of the base plate 307 is set to be 10mm, sufficient negative pressure can be formed to the maximum extent to improve the pressure at the jet port, and the gas cavity 304 and the base plate 307 are used as main structures in the gas jet vacuum pump set 3. The lower end of the air cavity 304 is connected with a support plate fixed at the bottom of the vacuum chamber 300 through screw threads, the upper end of the air cavity 304 is tightly pressed with the chassis 307 through screws, and a rubber gasket 311 is added to ensure the air tightness of the air cavity, and the air cavity enters the air cavity through an air inlet joint and then overflows from the air holes of the chassis, so that the air compression is realized.

The water cooling tower 105 adopts a two-stage boosting mechanism, the electric fan and the hydraulic fan are arranged inside the water cooling tower 105, and the gas sprayed out from the gas sprayer 302 is received to serve as the kinetic energy of the electric fan inside the water cooling tower 105 to drive the hydraulic fan to drive the fan blades to rotate, so that the water quantity can be sprayed in the air, and the requirement of air draft cooling inside the water cooling tower 105 is met.

The concrete using mode and advantages are as follows: this far infrared drying equipment through setting up the drying cabinet, is provided with the drying chamber in the inside of drying cabinet to set up heat collector and drying chamber into overall structure, the heat collector passes through the universal wheel and rotates with the drying chamber to be connected, and the inclination of heat collector can be adjusted along with solar height. According to the change of the solar direction, the azimuth angle of the heat collector can be changed along with the change of the direction of the drying chamber, the heat collector can well track the solar direction, the light harvesting time of the heat collector is prolonged, air is sucked from the heat collector on the side surface when the drying equipment performs drying operation, and the heat collector heats the air under the action of sun radiation; the hot air enters the drying chamber under the driving of the fan; the hot air heats the materials, the moisture is discharged, and the moisture content of the materials is reduced; when the airflow is discharged from the moisture-discharging air outlet of the drying chamber, part of damp and hot air in the drying chamber and water vapor evaporated from the materials are taken away; a part of hot air enters the overhead heat collector, circularly heated and then enters the drying chamber again, so that the heat is circularly utilized; and the inside of the drying box is also provided with a far infrared generator in a combined manner, the far infrared transmits heat to the material by radiation and the clapboard transmits heat to the material by convection, thereby avoiding the unevenness of heating, ensuring the quality of the material, shortening the drying time, not only realizing higher vacuum degree and adjustable size, but also realizing adjustable irradiation distance and variable drying power. In the drying process, the material can rotate along with the material tray, the radiation is more even, has solved the inhomogeneous problem of far infrared radiation in the heating process, in order to reduce the heat that looses because heat-conduction loses, the shell structure of drying cabinet adopts bilayer structure, prevents thermal scattering and disappearing to the mesh of energy saving has been reached.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A far infrared drying equipment which is characterized in that: the drying box comprises a drying box (1), a solar heat collecting plate (2), a gas injection vacuum pump set (3) and a far infrared generator (4), wherein the upper surface of the drying box (1) is connected with the solar heat collecting plate (2) in parallel through a supporting frame, an overhead heat collector (201) is arranged at the top of the outer side of the drying box (1), a drying chamber (204) is arranged in the drying box (1), a side heat collector (202) is arranged on the inner wall of the drying chamber (204), the lower surface of the solar heat collecting plate (2) is rotatably connected with the overhead heat collector (201) through a universal wheel (200), two ends of the overhead heat collector (201) are connected with the side heat collector (202) through pipelines, and the overhead heat collector (201) and the side heat collector (202) are connected with the drying chamber (204) in the drying box (1) through; and a fan (203) is arranged at the left end of the drying chamber (204), the far infrared generator (4) is connected in parallel to the inner surface of the drying box (1), two ends of the far infrared generator (4) are connected with the upper end of the rotating disc (100) in the drying box (1) in a sliding way through the installation adjusting plate (400), the lower end of the rotating disc (100) is connected with a motor shaft (102) through a coupler (101), the bottom end of the motor shaft (102) penetrates through the bottom of the drying box (1) and extends to the outside of the drying box (1), one end of the motor shaft (102) extending to the outer side of the bottom of the drying box (1) is connected with a rotating motor (103), the front surface of the drying box (1) is connected with a gas injection vacuum pump set (3) through a vacuum pump interface (104), the output end of the gas injection vacuum pump set (3) is connected with a water cooling tower (105).

2. The far infrared drying apparatus as set forth in claim 1, wherein: the gas injection vacuum pump set (3) comprises a vacuum chamber (300), a vacuum pump set (301) and a gas injector (302), wherein the vacuum pump set (301) is fixedly installed inside the vacuum chamber (300), the upper end of the vacuum chamber (300) is connected with a gas cavity (304) inside the gas injector (302) through a connecting hole (303), a gas inlet interface (305) is arranged at the right end of the gas injector (302), the input end of the gas inlet interface (305) is connected with the gas cavity (304) through a connecting pipe (306), a chassis (307) is fixedly installed at the upper end of the gas cavity (304), and a horn mouth (308) is formed in the outer surface of the chassis (307).

3. The far infrared drying apparatus as set forth in claim 1, wherein: the solar heat collecting plate (2) comprises a heat absorbing plate (208), a sealing plate (209) and a transparent cover plate (210), the heat absorbing plate (208) is arranged on the upper surface of the heat collecting plate bottom plate (211) in parallel, the end part of the heat absorbing plate (208) is connected with a heat collecting plate bottom plate (211) by sealing plates (209) at the periphery of the heat absorbing plate (208), the front end of the heat absorbing plate (208) is also provided with a heat insulating layer (212), and the upper surface of the absorber plate (208) is also provided with an air duct clapboard (213) and an air deflector (214), the air duct partition plate (213) and the air deflector (214) are vertically arranged, and the air duct partition plate (213) and the air deflector (214) are connected with the sealing plate (209) through the transparent cover plate (210) on the upper surface of the heat absorbing plate (208), an air inlet (215) is arranged at the left end of the sealing plate (209), and an air outlet (216) is arranged at the right end of the sealing plate (209).

4. The far infrared drying apparatus as set forth in claim 1, wherein: the far infrared generator (4) is internally provided with a distribution plate (401), an insulation board (402) and a catalyst board (403), the insulation board (404) is paved on the upper surface of the distribution plate (401), the insulation board (402) is fixedly installed on the upper surface of the insulation board (404), the catalyst board (403) is arranged on the upper surface of the insulation board (402), and a filter screen layer (405) is fixedly installed on the upper surface of the catalyst board (403).

5. The far infrared drying apparatus as set forth in claim 1, wherein: and a moisture discharging port (219) is fixedly arranged on the lower surface of the drying chamber (204).