CN108518927B - Drying device and drying method - Google Patents
Drying device and drying method Download PDFInfo
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- CN108518927B CN108518927B CN201810315639.7A CN201810315639A CN108518927B CN 108518927 B CN108518927 B CN 108518927B CN 201810315639 A CN201810315639 A CN 201810315639A CN 108518927 B CN108518927 B CN 108518927B
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- drying tower
- valve
- drying
- fan
- air supply
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- 238000001035 drying Methods 0.000 title claims abstract description 299
- 239000000463 material Substances 0.000 claims abstract description 31
- 239000000428 dust Substances 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 25
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 238000007791 dehumidification Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000017060 Arachis glabrata Nutrition 0.000 description 1
- 244000105624 Arachis hypogaea Species 0.000 description 1
- 235000010777 Arachis hypogaea Nutrition 0.000 description 1
- 235000018262 Arachis monticola Nutrition 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000000231 Sesamum indicum Species 0.000 description 1
- 235000003434 Sesamum indicum Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000020232 peanut Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
-
- 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
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
-
- 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
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention provides a drying device and a drying method, which belong to the technical field of drying equipment of agricultural products, wherein the drying device comprises a drying tower and an air supply device for supplying air into the drying tower, the air supply device supplies air into the drying tower in a flow mode with at least two different paths and/or different directions, and the air supply device supplies air into the drying tower in a mode of realizing part or all of the flow modes; the air supply of the drying device into the drying tower has at least two flow modes with different paths and/or different directions, so that materials at different positions in the drying tower can be dried, the materials are dried more uniformly, and the drying efficiency is improved.
Description
Technical Field
The invention relates to the technical field of drying equipment for agricultural products, in particular to a drying device and a drying method.
Background
The newly-collected grain moisture is generally higher, and the grain moisture can be safely stored after being reduced to safe moisture by manual airing or mechanical drying and dewatering treatment.
Chinese patent document CN103392795A discloses a drying apparatus comprising a drying chamber, a hoist connected to a feed inlet of the drying chamber, a conveyor belt provided in the drying chamber, and a heat pump dehumidification system composed of an evaporator and a condenser to form a drying gas; in the use process, the lifter conveys the grains into the drying chamber, so that the grains are uniformly distributed on the conveying belt, meanwhile, hot gas generated by the heat pump dehumidification system is sucked into the drying chamber under the action of the fan, the drying gas is conveyed to an air inlet at the bottom of the drying chamber through the fan, the drying gas passes through the grains on the conveying belt from bottom to top, the grains are dried, and the drying gas is conveyed into the heat pump dehumidification system through an air outlet at the top of the drying chamber for recycling; by adopting the scheme, the grains can be mechanically dried and precipitation is realized, so that the grains can be stored conveniently after reaching safe moisture.
However, the above scheme has the following drawbacks: because the drying gas formed by the heat pump dehumidification system always enters the drying chamber through the air inlet at the bottom of the drying chamber, and then is discharged out of the drying chamber from the air outlet at the top of the drying chamber, the grain in the drying chamber is not uniformly dried, and the grain in the top of the drying chamber is still in a wet state when the grain in the bottom of the drying chamber is dried, so that the drying efficiency is lower.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the drying device in the prior art cannot uniformly dry materials, so that the drying efficiency is low, and further provide the drying device capable of uniformly drying the materials at different positions in the drying tower.
The invention also provides a drying method for improving the drying efficiency by uniformly drying the materials at different positions in the drying tower.
In order to solve the technical problems, the invention provides a drying device, which comprises a drying tower and an air supply device for supplying air into the drying tower, wherein the air supply device supplies air into the drying tower in a flow mode with at least two different paths and/or different directions, and the air supply device supplies air into the drying tower in a mode of realizing part or all of the flow modes.
Preferably, the air supply device supplies air into the drying tower in a manner of alternately switching between a part of the flow modes.
Preferably, the flow mode of the air supply device for supplying air into the drying tower comprises the following steps of,
Providing wind penetrating the drying tower from top to bottom into the drying tower;
And providing wind penetrating the drying tower from bottom to top into the drying tower;
The air supply device supplies air into the drying tower in a mode of performing interval switching between the two flow modes; the air supply device supplies air into the drying tower to form internal circulation between the air supply device and the drying tower.
Preferably, the air supply device is driven by only one fan, and the air supply in the drying tower is switched between different flow modes by the switch of the valve.
Preferably, the air supply device comprises,
The first valve group is opened to enable the fan to provide air pipe communication from top to bottom in the drying tower, and closed to enable the fan to provide air pipe sealing from top to bottom in the drying tower;
The second valve group is opened to enable the fan to be communicated with an air pipeline from bottom to top in the drying tower, and closed to enable the fan to be closed with the air pipeline from bottom to top in the drying tower;
Opening the first valve group and closing the second valve group to enable the fan to provide circulating air from top to bottom in the drying tower;
and opening the second valve group and closing the first valve group to enable the fan to provide circulating air from bottom to top in the drying tower.
Preferably, the first valve group comprises,
The first valve is communicated with the top of the drying tower and the fan outlet;
The second valve is communicated with the bottom of the drying tower and the fan inlet;
all or part of the first valve and the second valve are electric valves;
and/or the second valve group comprises,
The third valve is communicated with the bottom of the drying tower and the outlet of the fan;
the fourth valve is communicated with the top of the drying tower and the inlet of the fan;
and all or part of the third valve and the fourth valve are electric valves.
Preferably, the air supply device further comprises,
The inlet of the dust removing device is communicated with the outlet of the fan;
The inlet of the dehumidifying device is communicated with the outlet of the dust removing device;
And the inlet of the heating device is communicated with the outlet of the dehumidifying device, and the outlet of the heating device is respectively communicated with the first valve and the third valve.
As a preferable scheme, at least three moisture detection devices are arranged in the drying tower, and the moisture detection devices are uniformly distributed along the height direction of the drying tower; at least two temperature detection devices are arranged in the drying tower, and the temperature detection devices are respectively arranged at the top and the bottom of the drying tower and are positioned at the air supply opening of the air supply device.
The invention also provides a drying method, which adopts the drying device in any one of the schemes to dry materials.
Preferably, the method comprises the following steps:
Placing the materials into a drying tower;
Opening the first valve and the second valve, closing the third valve and the fourth valve, starting the fan, the heating device, the dust removing device and the dehumidifying device, so that the wind sequentially passes through the dust removing device, the dehumidifying device, the heating device, the first valve, the top of the drying tower, the inside of the drying tower, the bottom of the drying tower and the second valve from the outlet of the fan, and finally returns to the inlet of the fan to complete forward internal circulation;
When the temperature detection device at the top of the drying tower detects that the temperature in the drying tower reaches a set value, the third valve and the fourth valve are opened, the first valve and the second valve are closed, so that wind sequentially passes through the dust removing device, the dehumidifying device, the heating device, the third valve, the bottom of the drying tower, the inside of the drying tower, the top of the drying tower, the fourth valve and the inlet of the fan from the outlet of the fan to complete reverse internal circulation;
when the temperature detection device at the bottom of the drying tower detects that the temperature in the drying tower reaches a set value, switching the flow mode of the air supply again;
Repeating the switching steps until all the moisture detection devices in the drying tower detect that the materials in the drying tower reach a preset effect, and finishing the drying of the materials.
The technical scheme of the invention has the following advantages:
1. According to the drying device provided by the invention, the air supply into the drying tower has at least two flow modes with different paths and/or different directions, so that materials at different positions in the drying tower can be dried, the materials are dried more uniformly, and the drying efficiency is improved.
2. According to the drying device provided by the invention, air is supplied into the drying tower in a mode of performing interval switching between partial flowing modes, so that the materials are dried more uniformly, and meanwhile, the materials are prevented from being excessively dried due to drying and blowing at the same position, and the quality of the materials is uniform.
3. The flow mode of the air supply in the drying tower comprises the steps of providing the air penetrating through the drying tower from top to bottom in the drying tower and providing the air penetrating through the drying tower from bottom to top in the drying tower; the air supply device supplies air into the drying tower in a mode of performing interval switching between the two flow modes; when the air supply penetrates through the drying tower from top to bottom, the moisture of the materials in the drying tower is blown to the bottom of the drying tower, and when the air supply penetrates through the drying tower from bottom to top, the moisture of the materials in the drying tower is blown to the top of the drying tower, so that the materials in the drying tower are uniformly dried and are guaranteed to have the same quality, and excessive moisture cannot be lost due to excessive drying.
4. According to the drying device provided by the invention, the air supply device supplies air into the drying tower to form internal circulation between the air supply device and the drying tower, so that the waste heat of the air supply is fully utilized, the energy efficiency is improved, and the air pollution is avoided.
5. According to the drying device provided by the invention, the air supply device is driven by only one fan, so that energy sources can be saved, the air supply in the drying tower can be switched between different flow modes through the switch of the valve, and the device can be more intelligent through automatically controlling the switch of the valve.
6. The air supply device comprises a first valve group and a second valve group, the first valve group is opened, the second valve group is closed, the fan supplies circulating air from top to bottom into the drying tower, the second valve group is opened, the first valve group is closed, the fan supplies circulating air from bottom to top into the drying tower, when different circulation is switched, the fan is not required to be closed, and the device can be rapidly realized only by opening and closing the valves, so that the working efficiency of the device is improved.
7. According to the drying device provided by the invention, all or part of the valves which are switched when the different circulation is switched are electric valves, so that the switching of different circulating winds can be realized by rapid electric control according to the on-site situation.
8. The drying device provided by the invention comprises a dehumidifying device, wherein the inlet is communicated with the outlet of the fan, the outlet is respectively communicated with the first valve and the third valve, and the air supply is firstly subjected to drying treatment through the dehumidifying device no matter the air supply penetrates through the drying tower from top to bottom or from bottom to top, so that the air supply entering the drying tower is drying air, and the drying efficiency of the device is improved.
9. The drying device provided by the invention comprises the heating device, and the air supplied into the drying tower is heated to form hot air, so that the drying efficiency of materials in the drying tower is improved.
10. The drying device provided by the invention comprises the dust removing device, and dust removing treatment is carried out before the air supply enters the drying tower, so that the pollution to materials and the damage to equipment are avoided.
11. According to the drying device provided by the invention, at least three moisture detection devices are arranged in the drying tower, are uniformly distributed along the height direction of the drying tower and are used for detecting the drying degree of materials at different positions in the drying tower, and a switching basis is provided for a circulation mode of air supply.
12. According to the drying device provided by the invention, at least two temperature detection devices are arranged in the drying tower and are respectively arranged at the top and the bottom of the drying tower and are positioned at the air supply opening of the air supply device, when air is supplied from one air supply opening for a period of time, local high temperature is easy to form, at the moment, the temperature detection devices can timely detect out, provide a switching basis for the circulation mode of the air supply, timely switch the air supply mode, and avoid uneven drying of materials due to the local high temperature in the drying tower.
13. The drying method provided by the invention has any one of the advantages due to the adoption of the drying device.
14. According to the drying method provided by the invention, the opening and closing of the valve are controlled intelligently in time according to the values detected by the temperature detection device and the moisture detection device which are arranged in the drying tower, so that the air supply is switched between different flow modes, and the drying of the materials in the drying tower is automatically finished.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front view of a first embodiment of the present invention.
Fig. 2 is a front view of a second embodiment of the present invention.
Fig. 3 is a front view of a third embodiment of the present invention.
Reference numerals illustrate:
1. A first valve; 2. a second valve; 3. a third valve; 4. a fourth valve; 5. a drying tower; 6. a blower; 7. a dehumidifying device; 8. a heating device; 9. a dust removal device; 10. a moisture detecting device; 11. and a temperature detecting device.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
The embodiment provides a drying device, as shown in fig. 1, which comprises a drying tower 5, an air supply device for supplying air into the drying tower 5, a dehumidifying device 7, a heating device 8, a dust removing device 9, a moisture detecting device 10 and a temperature detecting device 11.
The air supply device supplies air into the drying tower 5 to form an internal circulation between the air supply device and the drying tower 5; the flow mode of the air supply device for supplying air into the drying tower 5 comprises the steps of providing air penetrating through the drying tower 5 from top to bottom into the drying tower 5 and providing air penetrating through the drying tower 5 from bottom to top into the drying tower 5; the air supply device supplies air into the drying tower 5 in a manner of alternately switching between the two flow modes.
The air supply device is driven by only one fan 6, and the air supply in the drying tower 5 is switched between different flow modes through the switch of a valve, the air supply device comprises a first valve group and a second valve group, the first valve group comprises a first valve 1 and a second valve 2, the first valve 1 is communicated with the top of the drying tower 5 and the outlet of the fan 6, the second valve 2 is communicated with the bottom of the drying tower 5 and the inlet of the fan 6, the fan 6 is communicated with an air pipe from top to bottom in the drying tower 5 after the first valve group is opened, and the fan 6 is closed to provide an air pipe from top to bottom in the drying tower 5 after the first valve group is closed; the second valve group comprises a third valve 3 and a fourth valve 4, the third valve 3 is communicated with the bottom of the drying tower 5 and the outlet of the fan 6, the fourth valve 4 is communicated with the top of the drying tower 5 and the inlet of the fan 6, the fan 6 is communicated with an air pipe from bottom to top in the drying tower 5 after the second valve group is opened, the fan 6 is closed to provide an air pipe from bottom to top in the drying tower 5 after the second valve group is closed, and all or part of the first valve 1, the second valve 2, the third valve 3 and the fourth valve 4 are electric valves; in operation, the first valve group is opened and the second valve group is closed, so that the fan 6 provides circulating air from top to bottom into the drying tower 5; the second valve group is opened and the first valve group is closed, so that the fan 6 provides circulating air from bottom to top into the drying tower 5.
The dust removing device 9 is communicated between the outlet of the fan 6 and the dehumidifying device 7, the inlet of the dehumidifying device 7 is communicated with the outlet of the dust removing device 9, the inlet of the heating device 8 is communicated with the outlet of the dehumidifying device 7, and the outlet of the heating device 8 is respectively communicated with the first valve 1 and the third valve 3; the heating device can adopt a carbon crystal plate or a heating rod and the like.
The moisture detecting device 10 is provided with at least three in the drying tower 5, and is uniformly distributed along the height direction of the drying tower 5.
The temperature detection device 11 is provided with at least two in the drying tower 5, and is respectively arranged at the top and the bottom of the drying tower 5 and positioned at the air supply opening of the air supply device.
Working process
Placing the materials into a drying tower 5;
When the inside of the drying tower 5 is subjected to forward internal circulation air supply from top to bottom, the first valve 1 and the second valve 2 are opened, the third valve 3 and the fourth valve 4 are closed, the fan 6, the heating device 8, the dust removing device 9 and the dehumidifying device 7 are started, so that wind sequentially passes through the dust removing device 9, the dehumidifying device 7, the heating device 8, the first valve 1, the top of the drying tower 5, the inside of the drying tower 5, the bottom of the drying tower 5 and the second valve 2 from the outlet of the fan 6, and finally returns to the inlet of the fan 6;
When the temperature detection device 11 at the top of the drying tower 5 detects that the temperature in the drying tower 5 reaches a set value, the inside of the drying tower 5 is switched to reverse internal circulation air supply from bottom to top, the third valve 3 and the fourth valve 4 are opened, the first valve 1 and the second valve 2 are closed, and the air sequentially passes through the dust removal device 9, the dehumidification device 7, the heating device 8, the third valve 3, the bottom of the drying tower 5, the inside of the drying tower 5, the top of the drying tower 5, the fourth valve 4 and the inlet of the fan 6 from the outlet of the fan 6;
when the temperature detection device 11 at the bottom of the drying tower 5 detects that the temperature in the drying tower 5 reaches a set value, the flow mode of the air supply is switched again;
The above switching steps are repeated until all the moisture detecting devices 10 in the drying tower 5 detect that the material in the drying tower 5 reaches the predetermined effect, and the drying of the material is completed.
The drying device and the drying method can be applied to drying of various crops such as peanut, soybean, corn, sesame and the like.
As an alternative to the above embodiment, the temperature detecting means 11 may be omitted.
As an alternative to the above-described embodiments, the moisture detecting device 10 may be omitted.
As an alternative to the above-described embodiments, the dust removing device 9 may be omitted.
As an alternative to the above-described embodiment, the heating device 8 may be omitted.
As an alternative to the above-described embodiments, the dehumidifying device 7 may be omitted.
As an alternative to the above embodiments, the first valve 1, the second valve 2, the third valve 3 and the fourth valve 4 may be replaced in whole or in part with other conventional valves than electrically operated valves.
As an alternative to the above embodiments, the second valve group may be replaced with other conventional valves than the third valve and the fourth valve.
As an alternative to the above embodiments, the first valve group may be replaced with other conventional valves than the first valve and the second valve.
As an alternative to the above embodiments, the first valve group and the second valve group may be omitted.
As an alternative to the above embodiments, the air supply device may be driven by a plurality of fans, so that the switching between different flow modes of the air supply in the drying tower may be replaced by other conventional modes besides a valve switch.
As an alternative to the above-described embodiment, the supply of air from the air supply device into the drying tower 5 may take other conventional forms than internal circulation.
As an alternative to the above embodiment, the flow pattern of the air supply from the air supply device into the drying tower 5 may be replaced with other conventional flow patterns other than the two flow patterns of the top-down through-drying tower and the bottom-up through-drying tower.
As an alternative to the above-described embodiment, the air supply device may be replaced with other conventional air supply forms than the one in which air is supplied into the drying tower 5 with a space-wise switching between partial flow forms.
As an alternative to the above-described embodiment, the air supply into the drying tower 5 has at least two flow patterns with different paths and/or different directions, and the air supply device supplies air into the drying tower 5 in a manner that achieves a part or all of the flow patterns.
Example 2
The embodiment provides a drying device, as shown in fig. 2, which comprises a drying tower 5, an air supply device for supplying air into the drying tower 5, a dust removing device, a dehumidifying device, a heating device, a moisture detecting device 10 and a temperature detecting device 11.
The moisture detecting device 10 is provided with at least three in the drying tower 5, and is uniformly distributed along the height direction of the drying tower 5.
The temperature detection device 11 is provided with at least four in the drying tower 5, and is respectively arranged at the air supply openings at the top, the bottom and the middle of the drying tower 5.
As shown in fig. 2, the fans, the dust removing device, the dehumidifying device and the heating device of the air supply device are all provided with two groups to form two groups of internal circulating air, and the circulating air at the left side of the drying tower 5 is blown out from the fans, and sequentially passes through the dust removing device, the dehumidifying device, the heating device, the temperature detecting device 11 at the bottom of the drying tower, the inside of the drying tower, the temperature detecting device 11 at the upper middle part of the drying tower and the inlet valve of the fans, and finally returns to the inlet of the fans to complete left side circulation; the circulating air on the right side of the drying tower 5 is blown out from the fan first and sequentially passes through the dust removing device, the dehumidifying device, the heating device, the temperature detecting device 11 at the top of the drying tower, the inside of the drying tower, the temperature detecting device at the middle lower part of the drying tower and the inlet valve of the fan, and finally returns to the inlet of the fan to complete the right side circulation.
By adopting the device, circulating air at the left side and the right side can be switched at intervals, so that materials in the drying tower are dried step by step and uniformly, and the drying efficiency is improved.
Example 3
The embodiment provides a drying device, as shown in fig. 3, which comprises a drying tower 5, an air supply device for supplying air into the drying tower 5, a dust removing device, a dehumidifying device, a heating device, a moisture detecting device and a temperature detecting device.
The moisture detection device is provided with at least three in the drying tower 5, and is uniformly distributed along the height direction of the drying tower 5.
The temperature detection device is arranged in the drying tower 5 and is respectively arranged at the air supply openings at the top, the bottom and the middle of the drying tower 5.
As shown in fig. 3, the fans, the dust removing device, the dehumidifying device and the heating device of the air supply device are all provided with four groups, so that four groups of internal circulating air are formed, and the circulating air positioned at the left lower side of the drying tower 5 is blown out from the fans and sequentially passes through the dust removing device, the dehumidifying device, the heating device, the temperature detecting device at the bottom of the drying tower, the inside of the drying tower, the temperature detecting device at the middle lower part of the drying tower and the inlet valve of the fans, and finally returns to the inlet of the fans to complete the left lower side circulation; circulating air at the left upper side of the drying tower 5 is blown out from the fan and sequentially passes through the dust removing device, the dehumidifying device, the heating device, the temperature detecting device at the upper middle part of the drying tower, the inside of the drying tower, the top of the drying tower and the inlet valve of the fan, and finally returns to the inlet of the fan to complete the left upper side circulation; circulating air positioned at the right lower side of the drying tower 5 is blown out from the fan and sequentially passes through the dust removing device, the dehumidifying device, the heating device, the temperature detecting device at the middle lower part of the drying tower, the inside of the drying tower, the bottom of the drying tower and the inlet valve of the fan, and finally returns to the inlet of the fan to finish the circulation at the right lower side; the circulating air at the right upper side of the drying tower 5 is blown out from the fan and sequentially passes through the dust removing device, the dehumidifying device, the heating device, the temperature detecting device at the top of the drying tower, the inside of the drying tower, the middle upper part of the drying tower and the inlet valve of the fan, and finally returns to the inlet of the fan to complete the right upper side circulation.
By adopting the device, circulating air at the left side and the right side can be switched at intervals, so that materials in the drying tower are dried step by step and uniformly, and the drying efficiency is improved.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (8)
1. A drying apparatus comprising: a drying tower (5) and a wind supply device for supplying wind into the drying tower (5), wherein the wind supply device supplies wind into the drying tower (5) in a flow mode with at least two different paths and/or different directions, and the wind supply device supplies wind into the drying tower (5) in a mode of realizing part or all of the flow modes;
the air supply device comprises an air supply device, an air supply device and an air supply device,
The first valve group is opened to enable the fan (6) to be communicated with an air pipe from top to bottom in the drying tower (5), and closed to enable the fan (6) to be closed with the air pipe from top to bottom in the drying tower (5);
The second valve group is opened to enable the fan (6) to be communicated with an air pipeline from bottom to top in the drying tower (5), and closed to enable the fan (6) to be closed with the air pipeline from bottom to top in the drying tower (5);
Opening the first valve group and closing the second valve group to enable the fan (6) to provide circulating air from top to bottom into the drying tower (5);
opening the second valve group and closing the first valve group to enable the fan (6) to provide circulating air from bottom to top into the drying tower (5);
the first valve group may comprise a valve element,
The first valve (1) is communicated with the top of the drying tower (5) and the outlet of the fan (6);
the second valve (2) is communicated with the bottom of the drying tower (5) and the inlet of the fan (6);
All or part of the first valve (1) and the second valve (2) are electric valves;
the second valve group may comprise a valve element,
The third valve (3) is communicated with the bottom of the drying tower (5) and the outlet of the fan (6);
the fourth valve (4) is communicated with the top of the drying tower (5) and the inlet of the fan (6);
all or part of the third valve (3) and the fourth valve (4) are electric valves.
2. Drying apparatus according to claim 1, characterized in that the air supply means supply air into the drying tower (5) in such a way that the flow patterns are switched at intervals between parts of the flow patterns.
3. Drying apparatus according to claim 2, wherein the flow pattern of the air supply device into the drying tower (5) comprises,
Providing wind penetrating the drying tower (5) from top to bottom into the drying tower (5);
and supplying wind penetrating through the drying tower (5) from bottom to top into the drying tower (5);
The air supply device supplies air into the drying tower (5) in a mode of performing interval switching between the two flow modes; the air supply device supplies air into the drying tower (5) to form an internal circulation between the air supply device and the drying tower (5).
4. A drying apparatus according to claim 3, characterized in that the air supply means is driven by only one fan (6) and the air supply in the drying tower (5) is switched between different flow modes by the opening and closing of a valve.
5. The drying apparatus of claim 1, wherein the air supply means further comprises,
The inlet of the dust removing device (9) is communicated with the outlet of the fan (6);
The inlet of the dehumidifying device (7) is communicated with the outlet of the dust removing device (9);
And the inlet of the heating device (8) is communicated with the outlet of the dehumidifying device (7), and the outlet is respectively communicated with the first valve (1) and the third valve (3).
6. The drying apparatus according to any one of claims 1 to 5, wherein at least three moisture detection devices (10) are provided in the drying tower (5), the moisture detection devices (10) being uniformly distributed along the height direction of the drying tower (5); at least two temperature detection devices (11) are arranged in the drying tower (5), and the temperature detection devices (11) are respectively arranged at the top and the bottom of the drying tower (5) and are positioned at the air supply opening of the air supply device.
7. A drying method, characterized in that the material is dried by the drying device according to any one of claims 1 to 6.
8. The drying method according to claim 7, comprising the steps of:
Placing the materials into a drying tower (5);
Opening the first valve (1) and the second valve (2), closing the third valve (3) and the fourth valve (4), starting a fan (6), a heating device (8), a dust removing device (9) and a dehumidifying device (7), enabling wind to sequentially pass through the dust removing device (9), the dehumidifying device (7), the heating device (8), the first valve (1), the top of a drying tower (5), the inside of the drying tower (5), the bottom of the drying tower (5) and the second valve (2) from the outlet of the fan (6), and finally returning to the inlet of the fan (6) to complete forward internal circulation;
When a temperature detection device (11) positioned at the top of the drying tower (5) detects that the temperature in the drying tower (5) reaches a set value, the third valve (3) and the fourth valve (4) are opened, the first valve (1) and the second valve (2) are closed, so that wind sequentially passes through a dust removing device (9), a dehumidification device (7), a heating device (8), the third valve (3), the bottom of the drying tower (5), the inside of the drying tower (5), the top of the drying tower (5), the fourth valve (4) and an inlet of a fan (6) from the outlet of the fan (6), and reverse internal circulation is completed;
When the temperature detection device (11) at the bottom of the drying tower (5) detects that the temperature in the drying tower (5) reaches a set value, the flow mode of the air supply is switched again;
repeating the switching step until all the moisture detection devices (10) in the drying tower (5) detect that the materials in the drying tower (5) reach a preset effect, and finishing the drying of the materials.
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| CN201810315639.7A CN108518927B (en) | 2018-04-10 | 2018-04-10 | Drying device and drying method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6202319B1 (en) * | 2000-01-13 | 2001-03-20 | Douglas Bening | Grain dryer heat exchanger |
| CN208282514U (en) * | 2018-04-10 | 2018-12-25 | 江西省农业科学院农产品质量安全与标准研究所 | A kind of drying device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0712462A (en) * | 1993-06-24 | 1995-01-17 | Yamamoto Mfg Co Ltd | Method and apparatus for drying and storing grain |
| JPH0783564A (en) * | 1993-09-10 | 1995-03-28 | Iseki & Co Ltd | Detection control method for air flow sensor of grain dryer |
| JP2995318B2 (en) * | 1995-10-17 | 1999-12-27 | 勝定 三上 | Grain storage and drying equipment |
| KR101583520B1 (en) * | 2015-02-10 | 2016-01-11 | (주)풍천엔지니어링 | plume and power reduction cross flow cooling tower and control method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6202319B1 (en) * | 2000-01-13 | 2001-03-20 | Douglas Bening | Grain dryer heat exchanger |
| CN208282514U (en) * | 2018-04-10 | 2018-12-25 | 江西省农业科学院农产品质量安全与标准研究所 | A kind of drying device |
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