CN114152069A - Bale drying system and method based on multi-stage heat pump heating - Google Patents
Bale drying system and method based on multi-stage heat pump heating Download PDFInfo
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- CN114152069A CN114152069A CN202111392777.3A CN202111392777A CN114152069A CN 114152069 A CN114152069 A CN 114152069A CN 202111392777 A CN202111392777 A CN 202111392777A CN 114152069 A CN114152069 A CN 114152069A
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- 238000001035 drying Methods 0.000 title claims abstract description 120
- 238000010438 heat treatment Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title description 4
- 238000001816 cooling Methods 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010902 straw Substances 0.000 claims description 35
- 230000000087 stabilizing effect Effects 0.000 claims description 18
- 238000009423 ventilation Methods 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 6
- 238000007602 hot air drying Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 3
- 244000025254 Cannabis sativa Species 0.000 abstract description 22
- 239000003570 air Substances 0.000 description 116
- 241000219823 Medicago Species 0.000 description 6
- 235000017587 Medicago sativa ssp. sativa Nutrition 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004459 forage Substances 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
- F26B2200/02—Biomass, e.g. waste vegetative matter, straw
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Storage Of Harvested Produce (AREA)
Abstract
The invention provides a multi-stage heat pump heating-based bale drying system and a multi-stage heat pump heating-based bale drying method, wherein the system comprises a high-temperature air generating device, a low-temperature air generating device and a plurality of bale processing devices; the high-temperature air generating device is communicated with the bale processing devices and is used for heating air step by step to obtain high-temperature air and conveying the high-temperature air into the plurality of bale processing devices respectively; the low-temperature air generating device is communicated with the bale processing devices and is used for conveying low-temperature air into the plurality of bale processing devices respectively; the bale device is used for carrying out drying treatment on the bale through high-temperature air, and then cooling treatment is carried out on the dried bale through low-temperature air. The invention realizes cooling after high-temperature drying treatment is carried out on the grass bales, takes away hot and humid air inside the grass bales in time, prevents the grass bales from going moldy and going bad, and realizes drying treatment on the grass with different water contents and types.
Description
Technical Field
The invention relates to the technical field of drying, in particular to a multi-stage heat pump heating-based bale drying system and a multi-stage heat pump heating-based bale drying method.
Background
The alfalfa industry in China has the problems of insufficient supply of high-quality alfalfa, uneven product quality, low scale degree and the like. The water content of the harvested alfalfa is high, and the alfalfa is easy to damage in direct storage and needs to be reduced as soon as possible. At present, the alfalfa drying method comprises two methods of natural drying and high-temperature hot air drying. The natural drying is greatly influenced by environmental factors, so that the drying quality of the natural drying cannot be guaranteed, the drying time is long, and the efficiency is low.
At present, when pasture such as alfalfa and the like is dried, hot air is blown into the pasture by using high-temperature equipment, and then the pasture is dried. However, the pasture can be packaged into a bale before being dried, and a large amount of heat can be remained in the bale after being dried at high temperature, so that the pasture mildew phenomenon is easily caused. Most of the existing pasture grass drying equipment can only carry out targeted drying treatment on pasture grass with single kind and single water content, and cannot simultaneously carry out drying treatment on pasture grass with different kinds or different water contents.
Disclosure of Invention
The invention provides a multi-stage heat pump heating-based bale drying system and a multi-stage heat pump heating-based bale drying method, which are used for solving the defects that in the prior art, only high-temperature drying treatment can be carried out on a bale, so that the bale is easy to mildew, and drying treatment cannot be carried out on different types or different water contents of pastures at the same time, so that the cooling is carried out after the high-temperature drying treatment is carried out on the bale, hot and humid air in the bale is taken away in time, and the mildew and the deterioration of the bale are prevented; and can formulate corresponding drying cycle for the grass of different types or different moisture content through a plurality of mutually independent bale processing apparatus, realized carrying out drying process to moisture content and the different grass of type simultaneously.
The invention provides a multi-stage heat pump heating-based bale drying system, which comprises a high-temperature air generating device, a low-temperature air generating device and a plurality of bale processing devices, wherein the high-temperature air generating device is connected with the low-temperature air generating device;
the high-temperature air generating device is communicated with the bale processing devices and is used for heating air step by step to obtain high-temperature air and conveying the high-temperature air into the bale processing devices respectively;
the low-temperature air generating device is communicated with the bale processing devices and is used for conveying low-temperature air into the plurality of bale processing devices respectively;
the bale device is used for drying the bales through the high-temperature air and then cooling the dried bales through the low-temperature air.
According to the bale drying system based on multi-stage heat pump heating, the high-temperature air generating device comprises a plurality of air heating elements which are connected in sequence.
According to the multi-stage heat pump heating-based bale drying system provided by the invention, the bale processing device comprises a drying platform and a cooling platform positioned on one side of the drying platform;
a high-temperature drying part is arranged above the drying platform, is communicated with the high-temperature air generating device and is used for conveying high-temperature air into the bales;
the cooling device is characterized in that a cavity is arranged below the cooling platform, a ventilation structure is arranged on the side wall surface of the cavity, and the low-temperature air generating device is communicated with the ventilation structure.
According to the multi-stage heat pump heating-based bale drying system provided by the invention, the high-temperature drying part comprises a pressure stabilizing box and a plurality of needle tubes uniformly distributed at the bottom of the pressure stabilizing box, the pressure stabilizing box is communicated with the high-temperature air generating device, and one ends of the needle tubes are communicated with the pressure stabilizing box.
According to the multi-stage heat pump heating-based bale drying system provided by the invention, the two sides of the cooling platform are provided with the inspection ports.
According to the multi-stage heat pump heating-based bale drying system provided by the invention, the bale processing device further comprises a feeding conveying part, and the feeding conveying part is used for conveying the bales to be processed to the position below the high-temperature drying part.
According to the multi-stage heat pump heating-based bale drying system provided by the invention, the feeding conveying part comprises a feeding platform, an automatic conveying part is arranged on the feeding platform, and the high-temperature drying part is positioned between the automatic conveying part and the cooling platform.
According to the multi-stage heat pump heating-based bale drying system provided by the invention, the bale processing device further comprises a bale breaking platform, a conveying component and an encryption machine, the cooling platform is positioned between the bale breaking platform and the high-temperature drying component, one end of the conveying component is positioned below the bale breaking platform, and the other end of the conveying component is positioned at the encryption machine.
According to the multi-stage heat pump heating-based bale drying system provided by the invention, the lower part of the side wall surface of the encryption machine is provided with the discharge hole.
The invention also provides a multi-stage heat pump heating-based bale drying method, which comprises the following steps:
bundling the straw bundle with high water content at low density;
carrying out needle-punching hot air drying on the high-moisture bales, and then cooling the bales;
the cooled straw bundle is disassembled, and impurities in the straw bundle are picked out;
and carrying out encryption bundling on the disassembled straw bale.
According to the multi-stage heat pump heating-based bale drying system and the multi-stage heat pump heating-based bale drying method, bales of different types or different water contents are placed in drying processing areas in different bale processing devices, then the high-temperature air generating device heats air step by step, the temperature of the air is gradually increased, high-temperature air is finally obtained, and the high-temperature air is respectively conveyed into each bale processing device. Bale processing apparatus carries the high temperature air to the bale in for the high temperature air carries out heat and mass exchange with the inside material of bale, and then realizes the drying process to the bale. And the time for carrying out high-temperature drying treatment on the bales by each bale treatment device is correspondingly adjusted according to the types and the water content of the bales. The bale processing apparatus then moves the dried bales to an internal cooling zone while the cryogenic air generating apparatus delivers cryogenic air to the cooling zone within each bale processing apparatus, the cryogenic air passing over the surface and between the bales, thereby reducing the temperature of the bales. The straw bale is cooled after being subjected to high-temperature drying treatment, hot and humid air in the straw bale is taken away in time, and the straw bale is prevented from going moldy and going bad; and can formulate corresponding drying cycle for the forage grass of different types or different moisture content through a plurality of mutually independent bale processing apparatus, realized carrying out drying process to the forage grass of moisture content and kind difference simultaneously, ensured the drying process effect of forage grass.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a top plan view of a multi-stage heat pump heating based bale drying system provided by the present invention;
FIG. 2 is a schematic diagram of a multi-stage heat pump heating based bale drying system provided by the present invention;
FIG. 3 is a flow diagram of a multi-stage heat pump heating based bale drying method provided by the present invention;
reference numerals:
1: a high temperature air generating device; 2: a low temperature air generating device; 3: a bale processing device;
11: an air heating member; 12: a high temperature blast pipe; 21: a heat pump unit;
22: a fan; 23: cooling the blast pipe; 31: a drying platform;
32: a cooling platform; 33: a high temperature drying component; 34: a feeding transport member;
35: a bale breaking platform; 36: a conveying member; 37: an encryption machine;
321: a cavity; 322: a ventilation structure; 323: an inspection opening;
331: a voltage stabilizing box; 332: a needle tube; 341: a feeding platform;
342: an automatic transfer member; 371: and (4) a discharge port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
The multi-stage heat pump heating based bale drying system and method of the present invention will now be described with reference to fig. 1 to 3.
As shown in fig. 1 and 2, the multi-stage heat pump heating-based bale drying system includes a high temperature air generating device 1, a low temperature air generating device 2, and a plurality of bale processing devices 3.
Specifically, the high-temperature air generating device 1 is communicated with the bale processing devices 3, and the high-temperature air generating device 1 is used for heating air step by step to obtain high-temperature air and conveying the high-temperature air into the plurality of bale processing devices 3 respectively. The low-temperature air generating device 2 is communicated with the bale processing devices 3, and the low-temperature air generating device 2 is used for conveying low-temperature air into the plurality of bale processing devices 3 respectively. The bale device is used for carrying out drying treatment on the bale through high-temperature air, and then cooling treatment is carried out on the dried bale through low-temperature air.
When the device is used, bales of different types or different water contents are placed in drying treatment areas of different bale treatment devices 3, then the high-temperature air generation device 1 heats air step by step, so that the air temperature gradually rises, high-temperature air is finally obtained, and the high-temperature air is respectively conveyed into each bale treatment device 3. Bale processing apparatus 3 carries the high-temperature air to the bale in for the high-temperature air carries out heat and mass exchange with the inside material of bale, and then realizes the drying process to the bale. And the time for carrying out high-temperature drying treatment on the bales by each bale treatment device 3 is correspondingly adjusted according to the types and the water content of the bales.
The bale processing apparatus 3 then moves the dried bales to an internal cooling zone while the cryogenic air generating apparatus 2 delivers cryogenic air to the cooling zone within each bale processing apparatus 3, the cryogenic air passing over the surface and between the bales, thereby reducing the temperature of the bales.
The straw bale is cooled after being subjected to high-temperature drying treatment, hot and humid air in the straw bale is taken away in time, and the straw bale is prevented from going moldy and going bad; and a plurality of mutually independent bale processing devices 3 can set corresponding drying periods for the pasture with different types or different water contents, thereby realizing the drying processing of the pasture with different water contents and types and ensuring the drying processing effect of the pasture.
Further, as shown in fig. 1, the high temperature air generating apparatus 1 includes a plurality of air heating members 11 connected in series. When using, first air heating member 11 carries out the primary heating to the air, then transmits the air after the primary heating to second air heating member 11 and carries out the secondary heating, analogizes in proper order, obtains high-temperature air after terminal air heating member 11 carries out the final heating to the air, then terminal heating member carries high-temperature air in a plurality of bale processing apparatus 3 respectively through pipeline. And then the staged heating of the air is realized, the heating efficiency is improved, and the energy efficiency of the air heating member 11 can be improved.
Wherein in an alternative embodiment of the invention the air heating element 11 is for example a condenser. It should be understood that the air heating element 11 may be any other suitable element having an air heating function.
As shown in fig. 1, the high-temperature air generating device 1 further includes a high-temperature air supply pipe 12, the high-temperature air supply pipe 12 is located between the air heating member 11 and the bale processing device 3, and the high-temperature air supply pipe 12 is used for supplying high-temperature air into the plurality of bale processing devices 3, respectively. When in use, one end of the high-temperature air supply pipe 12 is connected with the tail air heating member 11, and the other end of the high-temperature air supply pipe 12 is respectively communicated with the plurality of bale processing devices 3. The air is heated in sequence by the air heating parts 11 to obtain high-temperature air, the high-temperature air is conveyed into the high-temperature air supply pipe 12 by the tail air heating part 11, and then the high-temperature air is conveyed into the bale processing devices 3 by the high-temperature air supply pipe 12.
Further, as shown in fig. 1 and 2, the low-temperature air generating device 2 includes a heat pump unit 21, a blower 22 and a cooling air supply pipe 23, one end of the blower 22 is connected to the heat pump unit 21, the other end of the blower 22 is communicated with one end of the cooling air supply pipe 23, and the plurality of bale processing devices 3 are respectively communicated with the other end of the cooling air supply pipe 23. When the device is used, the heat pump unit 21 cools ambient air, then the ambient air is conveyed to the cooling air supply branch pipe through the fan 22, and low-temperature air is conveyed into the bale processing device 3 through the cooling air supply pipe 23 to perform cooling processing on dried bales.
In an optional embodiment of the invention, the bale drying system based on multi-stage heat pump heating comprises a plurality of heat pump units, wherein one part of the heat pump units are used for generating low-temperature air, and the other part of the heat pump units are connected with the condenser and used for generating high-temperature air.
Further, as shown in fig. 1 and 2, the bale processing apparatus 3 includes a drying platform 31 and a cooling platform 32 located at one side of the drying platform 31;
a high-temperature drying part 33 is arranged above the drying platform 31, the high-temperature drying part 33 is communicated with the high-temperature air generating device 1, and the high-temperature drying part 33 is used for conveying high-temperature air into the bales;
a cavity 321 is arranged below the cooling platform 32, a ventilation structure 322 is arranged on the side wall surface of the cavity 321, and the low-temperature air generating device 2 is communicated with the ventilation structure 322. When the device is used, the bales to be dried are placed below the high-temperature drying part 33, the high-temperature air generating device 1 conveys the generated high-temperature air to the high-temperature drying part 33, and then the high-temperature drying part 33 conveys the high-temperature air into the bales, so that the temperature of the bales is increased, and the drying treatment of the bales is realized. The dried bales are then moved to the cooling platform 32 while the cryogenic air generating means 2 delivers the generated cryogenic air into the cavity 321 through the ventilation structure 322, which then passes over the surface and inside of the bales, reducing the temperature of the bales. And then realized cooling after carrying out high temperature and driving dry process to the bale, in time take away the inside hot humid air of bale, prevent that the bale from going moldy and rotting.
Wherein, in an alternative embodiment of the present invention, the ventilation structure 322 is, for example, a ventilation pipe. It should be appreciated that the vent structure 322 may be any other suitable structure.
As shown in fig. 2, the high-temperature drying unit 33 includes a pressure stabilizing box 331 and a plurality of needle tubes 332 uniformly distributed at the bottom of the pressure stabilizing box 331, the pressure stabilizing box 331 is communicated with the high-temperature air generating device 1, and one end of each needle tube 332 is communicated with the pressure stabilizing box 331. When the device is used, the high-temperature air generating device 1 conveys generated high-temperature air into the pressure stabilizing box 331, then the high-temperature air is conveyed into the needle tube 332 through the pressure stabilizing box 331 and then enters the straw bales through the needle tube 332, and the high-temperature drying treatment of the straw bales is realized. And a plurality of needle tubes 332 are uniformly distributed at the bottom of the pressure stabilizing box 331, so that high-temperature air in the pressure stabilizing box 331 can be uniformly conveyed into the bales, uniform and comprehensive drying treatment on the bales is ensured, and the condition that the interior of the bales is not uniformly dried and mildewed and deteriorated is avoided.
It should be understood that in other embodiments of the present invention, the needle tubes 332 may be uniformly distributed on the side wall surface of the plenum 331, with the needle tubes 332 being horizontally disposed. Only one end of the needle tube 332 is required to be communicated with the pressure stabilizing box 331, and the other end of the needle tube 332 can input high-temperature air into the bale.
As shown in fig. 2, inspection ports 323 are provided on both sides of the cooling platform 32. In use, the falling pasture can be disposed of through the access opening 323.
Further, as shown in fig. 2, the bale processing apparatus 3 further includes a feeding conveyor 34, and the feeding conveyor 34 is used for conveying the bales to be processed to a position below the high temperature drying unit 33. When the straw bale drying device is used, a straw bale to be treated is placed on the feeding transmission part 34, then the feeding transmission part 34 automatically conveys the straw bale to the drying platform 31, the automation degree of the straw bale drying treatment is improved, and the efficiency is improved.
As shown in fig. 2, the feeding and conveying component 34 includes a feeding platform 341, an automatic conveying component 342 is disposed on the feeding platform 341, and the high-temperature drying component 33 is located between the automatic conveying component 342 and the cooling platform 32. When using, place the bale of pending on automatic conveying piece 342, automatic conveying piece 342 carries the bale automatic below of carrying high temperature drying part 33 and carries out drying process, need not manual operation, avoids the staff to be scalded by high temperature drying part 33, has improved bale drying process's security.
Wherein, in an alternative embodiment of the present invention, the automatic conveying member 342 is, for example, a conveying belt. It should be understood that the automatic conveyor 342 may be any other component having a material conveying function.
Further, as shown in fig. 2, the bale processing apparatus 3 further includes a bale breaking platform 35, a conveying member 36 and an encryptor 37, the cooling platform 32 is located between the bale breaking platform 35 and the high temperature drying member 33, one end of the conveying member 36 is located below the bale breaking platform 35, and the other end of the conveying member 36 is located at the encryptor 37. When the straw bale encryption device is used, a to-be-processed straw bale is placed on the feeding transmission part 34, then the feeding transmission part 34 automatically conveys the straw bale to the drying platform 31 for drying, then the dried straw bale is moved to the cooling platform 32 for cooling, then the straw bale is moved to the bale breaking platform 35 for dismantling, impurities in the straw bale are picked out, and then the straw bale is conveyed to the encryption machine 37 through the conveying part 36 for encryption and bundling. And then realized the integration processing to the bale, need not to transport the bale to other equipment and operate, improved the simple and convenient degree that the bale was handled, improved the treatment effeciency.
As shown in fig. 2, a discharge port 371 is provided at a lower portion of a sidewall surface of the encryptor 37. When the straw bale bundling machine is used, the straw bales subjected to the encryption bundling processing are taken out from the discharge hole 371, and then the straw bales can be transported to corresponding positions to be stored or used, so that the subsequent transportation is facilitated, and the transportation cost is reduced.
Wherein in an alternative embodiment of the present invention, the conveying member 36 is, for example, a conveyor belt. It should be understood that the transport component 36 may be any other component having material transport capabilities.
On the other hand, as shown in fig. 3, the invention also provides a bale drying method based on multi-stage heat pump heating, which comprises the following steps:
s1: bundling the straw bundle with high water content at low density;
the grass bales of different types and different water contents are respectively bundled at low density and then placed in different grass bale processing devices, so that the drying treatment of the grass pastures with different water contents and different types is realized, the drying treatment effect of the grass pastures is ensured, the completeness of the grass blade (the blade is broken and damaged during operation) is greatly ensured, and the quality of the grass pastures is relatively improved.
S2: carrying out needle-punching hot air drying on the high-moisture bales, and then cooling the bales;
carry the high-temperature air in the bale for the high-temperature air carries out heat and mass exchange with the inside material of bale, and then realizes the drying process to the bale, has improved drying efficiency and efficiency. Then low-temperature air is conveyed to the surface and the interior of the bale, the temperature of the bale is reduced, the influence of 'wet spots' and impurities in the bale is avoided, and the bale is prevented from going moldy and going bad.
S3: the cooled straw bundle is disassembled, and impurities in the straw bundle are picked out;
the cooled grass bundles are cut, impurities in the grass bundles, such as weeds, a grass wetting machine and the like are picked out, and the quality of the grass bundles is further improved.
S4: and carrying out encryption bundling on the disassembled straw bale.
The disassembled straw bundle is re-encrypted and bundled, so that the subsequent transportation is facilitated, and the transportation cost is reduced.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A multi-stage heat pump heating-based bale drying system is characterized by comprising a high-temperature air generating device, a low-temperature air generating device and a plurality of bale processing devices;
the high-temperature air generating device is communicated with the bale processing devices and is used for heating air step by step to obtain high-temperature air and conveying the high-temperature air into the bale processing devices respectively;
the low-temperature air generating device is communicated with the bale processing devices and is used for conveying low-temperature air into the plurality of bale processing devices respectively;
the bale device is used for drying the bales through the high-temperature air and then cooling the dried bales through the low-temperature air.
2. The multi-stage heat pump heating-based bale drying system of claim 1 wherein said high temperature air generating means comprises a plurality of sequentially connected air heating elements.
3. The multi-stage heat pump heating-based bale drying system of claim 1 or 2, wherein the bale processing apparatus comprises a drying platform and a cooling platform located to one side of the drying platform;
a high-temperature drying part is arranged above the drying platform, is communicated with the high-temperature air generating device and is used for conveying high-temperature air into the bales;
the cooling device is characterized in that a cavity is arranged below the cooling platform, a ventilation structure is arranged on the side wall surface of the cavity, and the low-temperature air generating device is communicated with the ventilation structure.
4. The multi-stage heat pump heating-based bale drying system of claim 3, wherein the high temperature drying component comprises a pressure stabilizing box and a plurality of needle tubes uniformly distributed at the bottom of the pressure stabilizing box, the pressure stabilizing box is communicated with the high temperature air generating device, and one ends of the needle tubes are communicated with the pressure stabilizing box.
5. The multi-stage heat pump heating-based bale drying system of claim 3, wherein inspection ports are provided on both sides of the cooling platform.
6. The multi-stage heat pump heating-based bale drying system of claim 3, wherein the bale processing apparatus further comprises a feed conveyor for transporting the bales to be processed below the high temperature drying section.
7. The multi-stage heat pump heating-based bale drying system of claim 7, wherein the feeding transport component comprises a feeding platform on which an automatic conveyor is disposed, and the high temperature drying component is located between the automatic conveyor and the cooling platform.
8. The multi-stage heat pump heating-based bale drying system of claim 3, wherein the bale processing apparatus further comprises a bale breaking platform, a conveying member, and an encryptor, the cooling platform being located between the bale breaking platform and the high temperature drying member, one end of the conveying member being located below the bale breaking platform, the other end of the conveying member being located at the encryptor.
9. The multi-stage heat pump heating-based bale drying system of claim 8, wherein a discharge outlet is provided at a lower portion of the side wall surface of the encryptor.
10. A bale drying method based on multi-stage heat pump heating is characterized by comprising the following steps:
bundling the straw bundle with high water content at low density;
carrying out needle-punching hot air drying on the high-moisture bales, and then cooling the bales;
the cooled straw bundle is disassembled, and impurities in the straw bundle are picked out;
and carrying out encryption bundling on the disassembled straw bale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN107764022A (en) * | 2017-11-29 | 2018-03-06 | 山丹县天泽农牧科技开发有限责任公司 | A kind of layer-stepping herbage drying unit continuously run |
| CN109539703A (en) * | 2018-11-02 | 2019-03-29 | 中国科学院广州能源研究所 | A kind of novel material drying device |
| CN211120408U (en) * | 2020-01-02 | 2020-07-28 | 内蒙古岩峰农业生物科技有限公司 | Single-cylinder air box down-pressing type bale drying equipment |
| CN111649542A (en) * | 2019-06-26 | 2020-09-11 | 云南化工设计院有限公司 | Drying technology applied to Chinese herbal medicine |
| CN212274415U (en) * | 2020-07-28 | 2021-01-01 | 禾极胜(北京)实业有限公司 | Drying equipment of high-efficient high yield of alfalfa bale |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1984001424A1 (en) * | 1982-09-27 | 1984-04-12 | Patentsmith Ii Inc | High efficiency impingement heating and cooling apparatus |
| CN1350153A (en) * | 2001-10-25 | 2002-05-22 | 雷江旺 | Continuous straw stoving and bundling machine |
| CN107621129A (en) * | 2017-08-24 | 2018-01-23 | 上海伯涵热能科技有限公司 | A kind of drying unit of outer thermal starting and depth dehumidifying |
| CN107764022A (en) * | 2017-11-29 | 2018-03-06 | 山丹县天泽农牧科技开发有限责任公司 | A kind of layer-stepping herbage drying unit continuously run |
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| CN111649542A (en) * | 2019-06-26 | 2020-09-11 | 云南化工设计院有限公司 | Drying technology applied to Chinese herbal medicine |
| CN211120408U (en) * | 2020-01-02 | 2020-07-28 | 内蒙古岩峰农业生物科技有限公司 | Single-cylinder air box down-pressing type bale drying equipment |
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