CN211346085U - Full-bin micro-speed static drying device - Google Patents
Full-bin micro-speed static drying device Download PDFInfo
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- CN211346085U CN211346085U CN201921485590.6U CN201921485590U CN211346085U CN 211346085 U CN211346085 U CN 211346085U CN 201921485590 U CN201921485590 U CN 201921485590U CN 211346085 U CN211346085 U CN 211346085U
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Abstract
The utility model discloses a little fast static drying device in full storehouse, include: the drying bin is vertically provided with at least one layer of bearing pore plates, and the dried objects are placed on the bearing pore plates to form at least one drying layer; the upper part and the lower part of each drying layer are respectively provided with an air bag for the inflow or outflow of drying air flow; the drying airflow enters from the air bag below the drying layer, passes through the bearing pore plate and the dried objects on the bearing pore plate from bottom to top and is discharged from the air bag above the drying layer; or the drying air flow enters from the air bag above the drying layer, passes through the dried objects on the bearing pore plate and the bearing pore plate from top to bottom and then is discharged from the air bag below the drying layer.
Description
Technical Field
The utility model relates to a drying system designs technical field, concretely relates to static drying device of full storehouse microtpeed.
Background
Grains are typically granular-type materials; in the drying device of the particle type moisture-containing material, drying is realized by heat and mass transfer between drying air and the particle type moisture-containing material.
A grain heat pump drying device is a combined device of a grain dryer and a heat pump unit. Wherein, the grain dryer is a place for exchanging heat and humidity between dry air and moist grain and capturing moisture of moist grain; the heat pump unit is a heat source and is used as a refrigerating system, an evaporator of the heat pump unit continuously absorbs heat from air discharged by the dryer and/or ambient air, and high-temperature dry air is continuously produced through a condenser.
At present, as shown in fig. 1, under the action of a lifter, grains at the bottom of a grain dryer are conveyed to the top, then slowly move downwards from the top to the bottom, and the steps are repeated in a circulating manner until the grains are dried; in each circulation, the grains pass through a drying section at the waist part of the dryer, and moisture on the surfaces of the grains in the drying section is heated and evaporated by high-temperature drying air; then, the grains enter a tempering section to realize the diffusion of moisture from the inside of the grains to the surface, and the preparation is made for the coming of the next hot air drying stage.
The drying section of the grain dryer is a space formed by a vertical grain discharging groove enclosed by two metal screen plates and a transverse air inlet and outlet channel of hot air, and is a place for carrying out heat and moisture exchange between the heat of the dry air and the moisture of moist grains.
In the grain drying device, the heat-moisture exchange process of the drying air and the wet grains is a process expressed as 'isenthalpic' on an air enthalpy diagram; the energy characteristics of the drying process of moisture-containing materials such as grains are as follows: the heat (enthalpy) of the drying air at the outlet of the drying process is equal to the heat (enthalpy) at the inlet of the drying process.
Because, in the process of drying the moisture-containing materials in the drying device and carrying out heat-moisture exchange of 'equal enthalpy', the drying air is cooled to release sensible heat, and the moisture in the moisture-containing materials is pushed to absorb heat and vaporize; in the process, the drying air and the drying device do not work outwards, the total heat of the thermodynamic system of the drying device is not reduced, and only part of the heat is converted from the sensible heat form of the drying air into the latent heat form of the water vapor. Therefore, the heat recovery of the outlet air of the drying device directly carrying out heat and mass transfer and heat and moisture exchange has much higher technical significance and commercial significance than other thermal systems (such as an internal combustion engine system and a boiler steam turbine system).
As the heat pump of "heat porter", can move back to the high grade to the low grade heat of moisture material drying device air outlet such as cereal, send back to drying device's air intake, let the heat circulate between moisture material moisture evaporation and vapor condensation heat recovery, increase substantially heat utilization and rate, reduce substantially the stoving cost.
However, the popularization and application of the heat recovery technology for the air outlet of the drying device for moisture-containing materials such as grains and the like face the main problem that dust in the air outlet pollutes a heat pump heat absorption device (an evaporator):
during the drying process, the grains are in continuous motion, soil attached to the surfaces of the grains is dried and peeled off due to the loss of water, and the grain hair and the grain skin are pulverized due to mutual friction among the grains. The surface of grain particles is dried and peeled off soil and powdered grain hair and grain husk are wrapped and clamped by drying airflow at the drying section of the circulating dryer to become dust in the air outlet of the drying device, and the concentration reaches 0.5g/m3The above; when the outlet air of the drying device containing dust is introduced into an evaporator of a heat pump unit for heat recovery, a large amount of condensed water is generated on the evaporator due to the fact that the outlet air is cooled and dehumidified, the dust is attached to fins of the evaporator along with the condensed water to cause serious pollution, thermal resistance of dirt of the evaporator is enlarged, air channels among the fins of the evaporator are blocked, and on a culture medium consisting of moist soil dust and grain hair and grain husks among the fins of the evaporator, microorganism bacteria are rapidly propagated to cause regional mildew, so that the function of the evaporator is degraded or even scrapped.
SUMMERY OF THE UTILITY MODEL
To the problem that there is the air-out dust to the heat pump heat sink to the current drying-machine that provides in the background art and to pollute, the utility model provides a little fast static drying device in full storehouse, include:
the drying bin is vertically provided with at least one layer of bearing pore plates, and the dried objects are placed on the bearing pore plates to form at least one drying layer; air bags for air to flow in or out are respectively arranged above and below each drying layer;
the drying airflow enters from the air bag below the drying layer, passes through the bearing pore plate and the dried objects on the bearing pore plate from bottom to top and is discharged from the air bag above the drying layer;
or the drying air flow enters from the air bag above the drying layer, passes through the dried objects on the bearing pore plate and the bearing pore plate from top to bottom and then is discharged from the air bag below the drying layer.
Preferably, the bearing hole plate is uniformly distributed with a plurality of vent holes.
Preferably, the carrying pore plate is of a funnel-shaped structure.
Preferably, the top of the drying bin is provided with a dried object inlet, and the bottom of the drying bin is provided with a dried object outlet; the bearing pore plate is provided with a circulation port for the dried material on the bearing pore plate to flow into the bearing pore plate adjacent to the lower part or the outlet.
Preferably, the dried object inlet, the dried object outlet and the circulation ports are located on the same vertical line.
Preferably, a valve is disposed on each of the inlet, the outlet, and the flow port.
Preferably, the dried material conveying belts are arranged above the inlet and below the outlet.
Preferably, the drying bin is provided with a plurality of drying layers, the flow directions of the drying air flows on the adjacent drying layers are opposite, and one air bag is shared between the two adjacent drying layers.
Preferably, a heat pump system is included that generates a drying air stream.
Preferably, the heat pump system comprises a dry airflow inflow channel, a dry airflow outflow channel and at least one set of heat pump units, each air packet needing to input dry airflow is communicated with the inflow channel through an input pipeline, and each air packet needing to discharge dry airflow is communicated with the outflow channel through an output pipeline;
each set of heat pump unit comprises a compressor, a condenser, a throttle valve and an evaporator which are connected; the condensers are arranged in the drying airflow inflow channel, and the evaporators are arranged in the drying airflow outflow channel; the condensers in all the heat pump units are sequentially arranged from the inlet of the inflow channel to one side of the drying bin, and the evaporators which are corresponding to each condenser and located in the outflow channel are sequentially arranged from the outlet of the outflow channel to the drying bin.
Preferably, the heat pump system comprises three sets of heat pump units, and condensers of the three sets of heat pump units are all positioned in the dry airflow inflow channel; and the evaporators of the three sets of heat pump units are all positioned in the dry airflow outflow channel.
Preferably, the tail end of the outflow channel is provided with a fan.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art, have following advantage and positive effect: the utility model provides a static drying device of full storehouse micro-speed, make full use of the good thermal physical property of cereal granule, when drying the operation, high temperature stoving air current advances inflow wind package, the stoving air current slows down, steps up in inflow wind package, do the diffuse diffusion of micro-speed to cereal layer cereal granule clearance, pass through the clearance of piling up between the cereal granule, heat including wet cereal granule, carry out the heat and moisture exchange with including wet cereal granule, promote cereal granule surface moisture evaporation to become steam and mix with the stoving air current and become warm and humid air current again, ooze from cereal layer micro-speed at last, collect in outflow wind package, accelerate, discharge;
adopt the utility model provides a, have following advantage:
the space utilization rate and the heat recovery value are improved
The whole-bin drying and continuous drying are adopted, a tempering area of a traditional circulating grain dryer and the circulating flow of grains are cancelled, the utilization rate of a drying space and the grain drying efficiency are improved, and the efficient evaporation and dehydration of wet grains are realized; compared with the traditional circulating dryer, the utility model has the advantages that the heat leakage intensity of the drying bin to the environment is reduced, the enthalpy of the return air of the drying bin is increased, and the technical value and the commercial value of the return air heat recovery are greatly improved;
second, the air return cleanliness of the drying bin is improved
The utility model discloses a little fast is dried, the stoving air current is impressed and is flowed in the wind package and pass through the cereal layer and discharge from the outflow wind package again, compare with traditional circulating drying-machine, it makes the millet hair husk of cereal to have overcome between the cereal granule because relative motion looks friction powderization, the attached earth of cereal granule surface is because lose moisture and mummification, peel off and reentrant stoving air current dusting problem again, and the air current sectional area that passes through the cereal layer is big, stoving air current velocity < 0.3m/s, little fast is dried, little fast air current can't carry the dust and break away from the cereal layer, the gas-solid separation is effectual, stoving return air cleanliness improves, be favorable to preventing dust pollution, be favorable to heat absorbing device safe and reliable operation such as heat pump evaporimeter, be favorable to heat pump heat recovery;
③ the quality of the dry base grain is good
The grains are kept still for drying, the drying airflow flows through air gaps among the grains in a natural accumulation state, the grains permeate at a low speed, the grains are continuously dried at a low temperature, the breakage rate and the crack rate of the grains are greatly reduced, the drying unevenness is greatly reduced, the quality of dry grains is good, and the yield is high.
Drawings
The above and other features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of a drying apparatus in the prior art;
fig. 2 is a schematic view of a full-bin micro-speed static drying device in embodiment 1 of the present invention;
FIG. 3 is a schematic view showing a drying gas flow passing through a drying layer according to example 1 of the present invention;
fig. 4 is a schematic view of a full-bin micro-speed static drying device in embodiment 2 of the present invention;
fig. 5 is a schematic view of a full-bin micro-speed static drying device in embodiment 3 of the present invention;
figure 6 is a schematic view of a drying air stream flowing through a drying layer according to embodiment 3 of the present invention;
fig. 7 is a schematic view of the full-bin micro-speed static drying device of the embodiment 4 of the present invention.
Detailed Description
The invention will be described in more detail hereinafter with reference to the accompanying drawings showing embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.
In the process of drying grains in the circulating dryer provided by the prior art, the grains are continuously conveyed to the top of the dryer by the elevator in continuous motion and are thrown out by the grain throwing disc at 360 degrees; then slowly moving downwards in a tempering section, and then, enabling the grains to enter a drying section again; and finally, the waste water flows into the bottom of the dryer and enters a suction inlet of the hoister to start a new cycle. During the drying process, the grains are in continuous motion, soil attached to the surfaces of grain particles is dried and peeled off due to water loss, and grain hair and grain skin are pulverized due to mutual friction among the grain particles. The surface of grain particles is dried and peeled off soil and powdered grain hair and grain husk are wrapped and clamped by drying airflow at the drying section of the circulating dryer to become dust in the air outlet of the drying device, and the concentration reaches 0.5g/m3The above; when the outlet air of the drying device containing dust is introduced into an evaporator of a heat pump unit for heat recovery, a large amount of condensed water is generated on the evaporator due to the fact that the outlet air is cooled and dehumidified, the dust is attached to fins of the evaporator along with the condensed water to cause serious pollution, thermal resistance of dirt of the evaporator is enlarged, air channels among the fins of the evaporator are blocked, and on a culture medium consisting of moist soil dust and grain hair and grain husks among the fins of the evaporator, microorganism bacteria are rapidly propagated to cause regional mildew, so that the function of the evaporator is degraded or even scrapped.
Aiming at the analysis of the problems, the utility model provides a full-bin micro-speed static drying device which is characterized by comprising a drying bin and drying air flow, wherein at least one layer of bearing pore plate is arranged along the vertical direction of the drying bin, and dried objects are arranged on each layer of the bearing pore plate to form at least one drying layer; the upper part and the lower part of each drying layer are respectively provided with an air bag for air flow to flow in or out; the drying airflow enters from the air bag below the drying layer, passes through the bearing pore plate and the dried object on the bearing pore plate from bottom to top, and is discharged from the air bag above the drying layer after drying is not uniformly carried out; or the drying airflow enters from the air bag above the drying layer, passes through the dried object and the bearing pore plate from top to bottom, is dried unevenly and is discharged from the air bag above the drying layer.
Wherein, the setting number of setting up the stoving layer in the stoving storehouse can be adjusted according to particular case, does not do the restriction here.
Wherein, the dried material can be grains, etc., which is not limited in this respect,
the utility model provides a static drying device of full storehouse micro-speed, make full use of the good hot physics characteristic of cereal granule, when drying the operation, high temperature drying air current gets into the wind package, drying air current slows down in the wind package, steps up, do the diffuse diffusion of micro-speed to cereal layer cereal granule clearance, pass through the clearance of piling up between the cereal granule, heat moisture-containing cereal granule, carry out the heat and moisture exchange with moisture-containing cereal granule, promote cereal granule surface moisture evaporation to become steam and mix with the drying air current and become warm and humid air current again, ooze from cereal layer micro-speed at last, collect in the outflow wind package, accelerate, discharge;
adopt the utility model provides a, have following advantage:
the space utilization rate and the heat recovery value are improved
The whole-bin drying and continuous drying are adopted, a tempering area of a traditional circulating grain dryer and the circulating flow of grains are cancelled, the utilization rate of a drying space and the grain drying efficiency are improved, and the efficient evaporation and dehydration of wet grains are realized; compared with the traditional circulating dryer, the utility model has the advantages that the heat leakage intensity of the drying bin to the environment is reduced, the enthalpy of the return air of the drying bin is increased, and the technical value and the commercial value of the return air heat recovery are greatly improved;
second, the air return cleanliness of the drying bin is improved
The utility model discloses a little fast is dried, the stoving air current is impressed and is flowed in the wind package and pass through the cereal layer and discharge from the outflow wind package again, compare with traditional circulating drying-machine, it makes the millet hair husk of cereal to have overcome between the cereal granule because relative motion looks friction powderization, the attached earth of cereal granule surface is because lose moisture and mummification, peel off and reentrant stoving air current dusting problem again, and the air current sectional area that passes through the cereal layer is big, stoving air current velocity < 0.3m/s, little fast is dried, little fast air current can't carry the dust and break away from the cereal layer, the gas-solid separation is effectual, stoving return air cleanliness improves, be favorable to preventing dust pollution, be favorable to heat absorbing device safe and reliable operation such as heat pump evaporimeter, be favorable to heat pump heat recovery;
③ the quality of the dry base grain is good
The grains are kept still for drying, the drying airflow flows through air gaps among the grains in a natural accumulation state, the grains permeate at a low speed, the grains are continuously dried at a low temperature, the breakage rate and the crack rate of the grains are greatly reduced, the drying unevenness is greatly reduced, the quality of dry grains is good, and the yield is high.
The following is a detailed description of specific embodiments:
example 1
Referring to fig. 2-3, the embodiment provides a full-bin micro-speed static drying device, which includes a drying bin 1, a carrying pore plate 4 is arranged on the cross section of the drying bin, and the carrying pore plate 4 is used for carrying a layer of dried object to form a drying layer 3; an upper wind bag 2 is arranged above the drying layer 3, and a lower wind bag 5 is arranged below the drying layer.
In this embodiment, the drying air flow is introduced from the downwind packet, passes through the drying object on the downwind packet uniformly and slowly through the carrying hole plate 4, and after drying the drying object, enters the upwind packet 2 and is discharged through the upwind packet, as shown in fig. 3.
Of course, in other embodiments, the drying air flow may also enter from the upper wind packet 2 and then exit from the lower wind packet 5, and may be adjusted according to specific needs, which is not limited herein.
In this embodiment, the carrying hole plate 4 is uniformly distributed with a plurality of vent holes, so that the drying air can uniformly pass through the dried objects at various positions on the carrying hole plate 4. The size of the vent hole is smaller than that of a single dried object, so that the dried object is prevented from falling off the bearing hole plate 4.
In this embodiment, the carrying aperture plate 4 has a funnel-shaped structure, as shown in fig. 2, which is beneficial to the dried material on the carrying aperture plate 4 to be smoothly discharged from the bottom of the funnel; of course, the specific shape of the bearing orifice plate 4 in other embodiments is not limited to the above, and can be adjusted according to specific situations, and is not limited herein.
In this embodiment, the top of the drying chamber 1 is provided with an inlet 9 for dried materials, and the bottom is provided with an outlet 7 for dried materials; the carrying orifice plate 3 is provided with a flow port 6 through which the dried material on the carrying orifice plate 3 flows into an outlet 7 adjacent to the lower side.
Further, the inlet 9, the outlet 7 and the circulating port 6 are positioned on the same vertical line, so that the dried materials can be fed or discharged from top to bottom by the self gravity.
Furthermore, valves are disposed on the inlet 9, the outlet 7 and the circulation port 6, and are used for controlling the opening and closing of the inlet 9, the outlet 7 and the circulation port 6, which may be controlled manually or by a controller, and this is not limited herein.
Further, a conveying belt 10 is arranged above the inlet 9, and the tail end of the conveying belt 10 is opposite to the inlet 9, so that the dried objects can be directly conveyed into the inlet 9; the below of export 7 is provided with conveyer belt 8, and export 7 is direct to the input of conveyer belt 8, and dry material is directly arranged to conveyer belt 8 from export 7 on, carries away again.
In this embodiment, the drying air flow is generated by a heat pump system.
Specifically, the heat pump system comprises a dry airflow inflow channel 12, a dry airflow outflow channel 11 and at least one set of heat pump unit; each wind packet which needs to input the drying airflow is communicated with the inflow channel through an input pipeline, and each wind packet which needs to discharge the drying airflow is communicated with the outflow channel through an output pipeline; in this embodiment the leeward package 6 communicates with the inflow channel 12 and the windward package 2 communicates with the outflow channel 11.
Furthermore, each set of heat pump unit comprises a compressor 16, a condenser 15, a throttle valve and an evaporator 14 which are connected with each other; the condensers 15 are all arranged in the drying airflow inflow channel, and the evaporators 14 are all arranged in the drying airflow outflow channel 11; wherein, the condenser 15 in the heat pump set is arranged from the inlet of the inflow channel 12 to one side of the drying chamber in sequence, and the corresponding evaporators 14 in the outflow channel 11 are arranged from the outlet of the outflow channel to one side of the drying chamber in sequence.
The airflow for drying enters the inflow channel 12, flows through the condenser group, is heated in a cascade mode to form high-temperature dry airflow, then is injected into each drying layer of the drying bin, and is subjected to damp-heat exchange with the dried object on the drying layer, the temperature is reduced to release sensible heat, the moisture in the dried object is pushed to evaporate and vaporize to be mixed into warm and wet airflow, and the warm and wet airflow is discharged from each drying room; the warm and humid air flow discharged from the drying bin is converged and discharged to the outflow channel 11, flows through the evaporator set, is cooled by steps to release sensible heat, and is subjected to deep dehumidification and moisture filtration to form low-temperature saturated air flow which is directly discharged from the outflow channel 11.
Further, the heat pump system comprises three sets of heat pump units, evaporators 14 of the three sets of heat pump units are all located in the outflow channel 11, and condensers 15 of the three sets of heat pump units are all located in the inflow channel 12.
Further, the end of the outflow channel 11 is provided with a blower 13 for promoting the circulation of the whole air path.
When the full-bin single-layer micro-speed static drying device adopting the heat pump heat source provided by the embodiment operates, the excellent thermophysical characteristics of grain particles, the high-cleanliness high-enthalpy characteristic of micro-speed static drying return air and the high-efficiency waste heat recovery characteristic of the heat pump unit are fully utilized, high-temperature drying airflow generated by heating the condenser set of the heat pump unit in a stepped mode enters the lower air bag of the drying bin, the drying airflow decelerates and boosts the pressure in the lower air bag, the drying airflow penetrates through grain layer interfaces to diffuse towards grain particle gaps at a micro speed, passes through accumulation gaps among grain particles, performs heat and moisture exchange with wet grains, pushes the moisture of the grain particles to evaporate and vaporize to generate warm and wet airflow, then the warm and wet airflow seeps out of the grain layer interfaces at a micro speed to enter the outflow air bag, and the warm and wet airflow is collected.
The whole-bin single-layer micro-speed static drying device adopting the heat pump heat source has the following distinct technical characteristics:
the space utilization rate and the heat recovery value are improved
The whole-bin drying and continuous drying are adopted, a tempering area of a traditional circulating grain dryer and the circulating flow of grains are cancelled, the utilization rate of a drying space and the grain drying efficiency are improved, and the efficient evaporation and dehydration of wet grains are realized; compared with the traditional circulating dryer, the utility model has the advantages that the heat leakage intensity of the drying bin to the environment is reduced, the enthalpy of the return air of the drying bin is increased, and the technical value and the commercial value of the return air heat recovery are greatly improved;
second, the air return cleanliness of the drying bin is improved
The utility model discloses a drying at a slow speed, the stoving air current is impressed and flows in the wind package and pass through the cereal layer and discharge from the outflow wind package again, compare with traditional circulating drying-machine, overcome between the cereal granule because relative motion looks friction makes the millet hair husk powderization, the attached earth of cereal granule surface is because lose moisture and mummification, peel off and reentrant stoving air current dusting problem again, and the air current sectional area that passes through the cereal layer is big, stoving air current speed < 0.3m/s, implement drying at a slow speed, the micro-speed air current can't carry the dust and break away from the cereal layer, the gas-solid separation effect is good, stoving return air cleanliness improves, be favorable to heat absorbing device safe and reliable operation such as heat pump evaporimeter, be favorable to heat pump heat recovery;
③ the quality of the dry base grain is good
Standing and drying grains, enabling drying airflow to flow through air gaps among grain particles in a natural accumulation state, penetrating at a low speed, continuously drying at a low temperature, greatly reducing the breakage rate and the crack rate of the grain particles, greatly reducing the drying nonuniformity, and obtaining high-quality and high-yield dry-basis grains;
high-level energy conservation and emission reduction
The utility model discloses combine whole storehouse individual layer slow-speed static drying technique and heat recovery heat pump unit technique, the "whole storehouse-slow-speed-static" mode in stoving storehouse, when improving drying efficiency and stoving quality, the air-out cleanliness factor also promotes by a wide margin to fundamentally solved stoving storehouse stoving air-out and smugglied dust pollution heat recovery evaporimeter's problem secretly, made the heat cycle theory among the cereal drying process become reality, realized higher level energy saving and emission reduction.
Example 2
This example is an adjustment made on the basis of example 1.
Referring to fig. 4, in this embodiment, the output end of the drying airflow outflow channel in the heat pump system is connected to the input end of the drying airflow inflow channel to form an airflow closed cycle, and the fan is disposed between the two, and the rest of the structures are not described again with reference to the description in embodiment 1.
The airflow for drying enters the inflow channel 12, flows through the condenser group, is heated in a cascade mode to form high-temperature dry airflow, then is injected into each drying layer of the drying bin, and is subjected to damp-heat exchange with the dried objects on the drying layer, the temperature is reduced to release sensible heat, moisture in the dried objects is pushed to evaporate and vaporize to form warm and wet airflow, and the warm and wet airflow is discharged from each drying room; warm and wet air flows discharged from the drying bin are converged and discharged into an outflow channel 11, flow through an evaporator set, are subjected to gradient temperature reduction to release sensible heat, are subjected to deep dehumidification and moisture filtration to form low-temperature saturated air flows, the low-temperature saturated air flows discharged from the outflow channel 11 are conveyed into an inflow channel, are heated by a condenser set to form a high-temperature dry ring, the drying and moisture absorption capacity of the ring is regenerated, and the next cycle is started; the above steps are repeated in a circulating way until the dried object is dried.
In the embodiment, the heat circulation that the air heated by the heat pump condenser is input into the drying bin, the grain is heated by the drying air and the moisture of the grain is absorbed for evaporation, the water vapor is generated to become warm and humid air, and the latent heat of the air discharged from the drying bin is recovered by the heat pump evaporator is realized by performing cascade recovery on the air discharged from the drying bin mainly by the latent heat of the water vapor through the technologies of closed cycle of drying airflow, cascade recovery of the air discharged from the drying bin and cascade heating of the drying air, so that the evaporation pressure of a heat pump system is greatly improved, the heating power and the heating energy efficiency ratio of the heat pump unit are greatly improved, the exhaust temperature of a compressor is effectively controlled, the safety.
Example 3
The present embodiment is an adjustment performed on the basis of embodiment 1, and a multi-layer drying layer is disposed in the drying bin 1 of the present embodiment. The specific structure of each drying layer, the structure of the drying chamber, and the structure of the heat pump system can all refer to the description in embodiment 1, and are not limited herein.
Referring to fig. 5-6, in this embodiment, three bearing pore plates, namely a bearing pore plate 6-1, a bearing pore plate 6-2 and a bearing pore plate 6-3, are sequentially arranged in the drying bin 1 from top to bottom, and the objects to be dried are placed above the bearing pore plates to form a drying layer 3-1, a drying layer 3-2 and a drying layer 3-3 respectively.
In this embodiment, the flow directions of the drying air flows on the adjacent drying layers are opposite, and one air bag is shared between the two adjacent drying layers.
Specifically, a wind bag is arranged above the drying layer 3-1, a wind bag is arranged between the drying layer 3-1 and the drying layer 3-2, a wind bag is arranged between the drying layer 3-2 and the drying layer 3-3, and a wind bag is arranged below the drying layer 3-3. The wind bag II and the wind bag IV are both connected to the first vertical channel 18, and the vertical channel 18 is communicated with the inflow channel 12 of the heat pump system; the wind bag I and the wind bag III are used as airflow outflow wind bags, the wind bag II and the wind bag III are both connected to the second vertical air duct 17, and the second vertical air duct 17 is communicated with the outflow channel 11 of the heat pump system.
The high-temperature dry air discharged from the inflow channel 12 is distributed into an air bag II and an air bag II through a first vertical channel 18, the high-temperature dry air in the air bag II is used by the drying layers 3-1 and 3-2 above and below, and the high-temperature dry air in the air bag II is used by the drying layers 3-3 above; the wet air discharged above the drying layer 3-1 is discharged into the second vertical air duct 17 through the air bag (i) for recycling, and the wet air discharged below the drying layer 3-2 and the wet air discharged above the drying layer 3-3 are discharged into the second vertical air duct 17 through the air bag (iii) for recycling.
Of course, in other embodiments, the number of drying layers is not limited to the above, and may be adjusted according to specific needs, and is not limited herein.
The utility model relates to an adopt the little fast static drying device's of full storehouse multilayer of heat pump heat source air open loop operation in-process, ambient air is inhaled by heat pump set, becomes high temperature dry air through the heating of condenser group step, send into the stoving storehouse and get into and contain wet cereal and cereal granule heat and moisture exchange and become warm humid air, send out the stoving storehouse again and flow into heat pump set evaporimeter group step cooling dehumidification and retrieve the heat, become low temperature saturated air discharge heat pump set reentrant ambient atmosphere at last.
The utility model relates to an adopt whole in-process of full storehouse multilayer micro-speed static drying device of heat pump heat source, heat pump set acts as the role of "heat carrier", will dry the low-grade heat of the warm and humid air-out of storehouse high enthalpy value and carry out the quality upgrading constantly, move back and be used for producing new high temperature drying air in the condenser, accomplish the warm and humid air-out waste heat step recovery in stoving storehouse, realize thermal circulation, the real high-efficient energy-saving of achievement cereal stoving! The utility model relates to an adopt static drying device of full storehouse multilayer micro-speed of heat pump heat source, integrated full storehouse multilayer micro-speed dry, the stoving of stewing, heat pump heat recovery, the circulation series technique of opening a way of air current, it is high to have the clean enthalpy value of return air, waste heat step recovery dry air step heating efficiency, dry base cereal quality is good obtains the bright technical characteristic that the rate is high:
the space utilization rate and the heat recovery value are improved
The whole-bin drying and continuous drying are adopted, a tempering area of a traditional circulating grain dryer and the circulating flow of grains are cancelled, the utilization rate of a drying space and the grain drying efficiency are improved, and the efficient evaporation and dehydration of wet grains are realized; compared with the traditional circulating dryer, the utility model has the advantages that the heat leakage intensity of the drying bin to the environment is reduced, the enthalpy of the return air of the drying bin is increased, and the technical value and the commercial value of the return air heat recovery are greatly improved;
second, the air return cleanliness of the drying bin is improved
The utility model discloses a little fast is dried, the stoving air current is impressed and is flowed in the wind package and pass through the cereal layer and discharge from flowing out the wind package again, compare with traditional circulating drying-machine, it makes the millet hair husk powder to have overcome between the cereal granule because relative motion looks friction, the attached earth of cereal granule surface is because lose moisture and mummification, peel off and reentrant stoving air current dusting problem again, and it is big to pass through the air current sectional area on a plurality of cereal layers, stoving air current velocity < 0.1m/s, implement little fast and dry, little fast air current can't carry the dust and break away from the cereal layer, the gas-solid separation is effectual, stoving return air cleanliness improves, be favorable to heat absorbing device such as heat pump evaporimeter safe and reliable operation, be favorable to heat pump heat recovery;
③ the quality of the dry base grain is good
Standing and drying grains, enabling drying airflow to flow through air gaps among grain particles in a natural accumulation state, penetrating at a low speed, continuously drying at a low temperature, greatly reducing the breakage rate and the crack rate of the grain particles, greatly reducing the drying nonuniformity, and obtaining high-quality and high-yield dry-basis grains;
high-level energy conservation and emission reduction
The utility model discloses combine the static drying technique of the little fast of full storehouse multilayer with heat recovery heat pump unit technique, the "whole storehouse-little fast-static" mode in stoving storehouse, when improving drying efficiency and stoving quality, the air-out cleanliness factor also promotes by a wide margin to fundamentally solved stoving storehouse stoving air-out and smugglied the problem of dust pollution heat recovery evaporimeter secretly, made the heat cycle theory of cereal stoving become reality.
The utility model discloses a stoving air current circulation of opening a way, stoving storehouse air-out waste heat step recovery, dry air step heating technique, carry out the step recovery with stoving storehouse air-out waste heat mainly for the steam latent heat, realize that "heat pump condenser heated air input stoving storehouse-dry air heating cereal absorbs cereal moisture evaporation and produces the heat cycle that steam becomes warm and humid air-out-heat pump evaporator recovery stoving storehouse air-out steam latent heat", heat pump system's evaporating pressure has been increased substantially, thereby heat pump set's heating power is increased substantially, heat the efficiency ratio and effectively control compressor exhaust temperature and improve heat pump system security reliability, higher level energy saving and emission reduction has been realized.
Example 4
This example is an adjustment made on the basis of example 3.
Referring to fig. 7, in the present embodiment, in the heat pump system, the output end of the outflow channel 11 is connected to the input end of the inflow channel 12 to form an air path circulation, and the fan 13 is disposed therebetween, and the rest of the structures are not described again with reference to the description in embodiment 3.
It will be appreciated by those skilled in the art that the invention can be embodied in many other specific forms without departing from the spirit or scope thereof. Although embodiments of the present invention have been described, it is to be understood that the present invention should not be limited to those precise embodiments, and that various changes and modifications can be effected therein by one skilled in the art without departing from the scope or spirit of the invention as defined by the appended claims.
Claims (12)
1. The utility model provides a little fast static drying device in full storehouse which characterized in that includes:
the drying bin is vertically provided with at least one layer of bearing pore plates, and the dried objects are placed on the bearing pore plates to form at least one drying layer; the upper part and the lower part of each drying layer are respectively provided with an air bag for the inflow or outflow of drying air flow;
the drying airflow enters from the air bag below the drying layer, passes through the bearing pore plate and the dried objects on the bearing pore plate from bottom to top and is discharged from the air bag above the drying layer;
or the drying air flow enters from the air bag above the drying layer, passes through the dried objects on the bearing pore plate and the bearing pore plate from top to bottom and then is discharged from the air bag below the drying layer.
2. The full-bin micro-speed static drying device according to claim 1, wherein a plurality of vent holes are uniformly distributed on the bearing hole plate.
3. The full-bin micro-speed static drying device according to claim 1, wherein the carrying pore plate is in a funnel-shaped structure.
4. The full-bin micro-speed static drying device according to claim 1 or 3, wherein the top of the drying bin is provided with a dried object inlet, and the bottom of the drying bin is provided with a dried object outlet; the bearing pore plate is provided with a circulation port for the dried material on the bearing pore plate to flow into the bearing pore plate adjacent to the lower part or the outlet.
5. The full-bin slow static drying device according to claim 4, wherein the inlet, the outlet and the through-flow openings are located on the same vertical line.
6. The full-bin micro-speed static drying device according to claim 4, wherein a valve is disposed on each of the inlet, the outlet and the circulation port.
7. The full-bin micro-speed static drying device according to claim 4, wherein a dried object conveying belt is arranged above the inlet and below the outlet.
8. The full-bin micro-speed static drying device according to claim 1, wherein the drying bin is provided with a plurality of drying layers, the flow directions of the drying air flows on the adjacent drying layers are opposite, and one air bag is shared between the two adjacent drying layers.
9. The full-bin micro-speed static drying device according to claim 1, further comprising a heat pump system for generating a drying air flow.
10. The full-bin micro-speed static drying device according to claim 9, wherein the heat pump system comprises an inflow channel, an outflow channel and at least one set of heat pump units, each air packet requiring dry airflow input is communicated with the inflow channel through an input pipeline, and each air packet requiring dry airflow discharge is communicated with the outflow channel through an output pipeline;
each set of heat pump unit comprises a compressor, a condenser, a throttle valve and an evaporator which are connected; the condensers are arranged in the drying airflow inflow channel, and the evaporators are arranged in the drying airflow outflow channel; the condensers in all the heat pump units are sequentially arranged from the inlet of the dry airflow inflow channel to one side of the drying bin, and the evaporators which are corresponding to each condenser and are positioned in the dry airflow outflow channel are sequentially arranged from the outlet of the outflow channel to the drying bin.
11. The full-bin micro-speed static drying device according to claim 10, wherein the heat pump system comprises three sets of heat pump units, condensers of the three sets of heat pump units are all located in the dry airflow inflow channel, and evaporators of the three sets of heat pump units are all located in the dry airflow outflow channel.
12. The full-bin micro-speed static drying device according to claim 10, wherein a fan is arranged at the end of the drying air flow outlet channel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110595169A (en) * | 2019-09-05 | 2019-12-20 | 上海伯涵热能科技有限公司 | Full-bin micro-speed static drying device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110595169A (en) * | 2019-09-05 | 2019-12-20 | 上海伯涵热能科技有限公司 | Full-bin micro-speed static drying device |
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