CN111006469A - Circulating system, energy-saving dryer and using method of energy-saving dryer - Google Patents
Circulating system, energy-saving dryer and using method of energy-saving dryer Download PDFInfo
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- CN111006469A CN111006469A CN201911252983.7A CN201911252983A CN111006469A CN 111006469 A CN111006469 A CN 111006469A CN 201911252983 A CN201911252983 A CN 201911252983A CN 111006469 A CN111006469 A CN 111006469A
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- air inlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
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- 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
- F26B21/003—Supply-air or gas filters
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- 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
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
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- 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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
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- 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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The application discloses circulation system for drying includes: the drying device comprises a drying chamber (1), a heat source (2) and a fan (3), wherein the heat source (2) is provided with an air inlet (21) and an air outlet pipe (22), the fan (3) is provided with an air inlet pipe (31) and an air outlet pipe (32), the air outlet pipe (22) is communicated with the heat source (2) and an inlet of the drying chamber (1), and the air inlet pipe (31) is communicated with an outlet of the drying chamber (1) and the fan (3); the air outlet pipe (32) is communicated with the air inlet (21) to form a circulating air duct; the circulating air duct is provided with an air inlet and an air outlet, the air inlet is provided with an air inlet valve (4), and the air outlet is provided with an air outlet valve (5). The application also provides an energy-saving dryer and a using method thereof. The circulation system, the energy-saving dryer and the using method thereof can circulate hot air, utilize waste heat of the dryer, reduce heat loss and reduce energy consumption.
Description
Technical Field
The application relates to the technical field of agricultural equipment, in particular to a circulating system, an energy-saving dryer and a using method of the energy-saving dryer.
Background
At present, the annual yield of grains in China is about 5 hundred million tons, the loss of grains after being harvested in the processes of threshing, airing, storing, transporting, processing, consuming and the like is about 18 percent, and the loss is greatly different from the annual grain mildewing loss of 3 percent all over the world. In the loss, because of climatic reasons, the amount of grains which are mildewed and germinated because the grains are not dried in the sun or reach safe moisture is up to 2100 million tons, which accounts for 4.2 percent of the total yield of grains in China, and the loss caused directly is 180 hundred million-240 million yuan. Therefore, the development of mechanical grain drying equipment is urgent.
However, in the existing dryer, hot air is directly discharged after passing through the drying chamber, so that the energy utilization rate is low, and waste is caused.
Disclosure of Invention
To solve the above technical problems, a first object of the present invention is to provide a circulation system for drying; a second object of the present invention is to provide an energy-saving dryer; the third purpose of the invention is to provide a using method of the energy-saving dryer; the circulation system, the energy-saving dryer and the using method thereof can circulate hot air, utilize waste heat of the dryer, reduce heat loss and reduce energy consumption.
The technical scheme provided by the invention is as follows:
a circulation system for drying, comprising: a drying chamber, a heat source and a fan,
the heat source is provided with an air inlet and an air outlet pipe, the fan is provided with an air inlet pipe and an air outlet pipe, the air outlet pipe is communicated with the heat source and the inlet of the drying chamber, and the air inlet pipe is communicated with the outlet of the drying chamber and the fan; the air outlet pipe is communicated with the air inlet to form a circulating air duct;
the circulating air duct is provided with an air inlet and an air outlet, the air inlet is provided with an air inlet valve, and the air outlet is provided with an air outlet valve.
Preferably, the circulating air duct is provided with a humidity sensor and/or a filter screen.
Preferably, the outer side of the air outlet is connected with an exhaust pipe.
Preferably, the circulating air duct is further provided with a dehumidifying device.
Preferably, the air inlet and the air outlet are arranged on the air inlet pipe, and the air inlet is positioned between the air outlet and the fan.
An energy-saving dryer comprises a box body, a lifting device and the circulating system, wherein a drying chamber in the circulating system is arranged in the box body, the lifting device is used for sending grains into the box body or sending the grains discharged from the drying chamber into the lifting device of the box body again, the lifting device comprises a lifting driving mechanism and a synchronous belt provided with a grain supporting hopper, and the lifting driving mechanism drives the synchronous belt to rotate circularly.
Preferably, a temperature sensor is further arranged in the box body.
A method for drying by using the energy-saving dryer comprises the following steps:
the lifting device sends the grains into a drying chamber of the box body;
keeping the air inlet valve and the air outlet valve in a closed state;
the heat source and the fan are started to heat air to form hot air which circulates in the circulating air duct and is continuously heated by the heat source, and the lifting driving mechanism is closed to stop grains in the drying chamber;
and opening the air inlet valve and the air outlet valve, discharging hot air in the circulating air duct, and simultaneously opening the lifting driving mechanism.
Preferably, when the circulating air duct is provided with a humidity sensor, the method further comprises: and after the humidity detected by the humidity sensor reaches a humidity set value, opening the air inlet valve and the air outlet valve to discharge hot air in the circulating air duct.
Preferably, when the box is provided with a temperature sensor, the box further comprises: and when the temperature detected by the temperature sensor reaches a temperature set value, closing the heat source, keeping the fan continuously working, keeping the lifting driving mechanism in a closed state, and circulating hot air in the circulating air duct.
The application firstly provides a circulating system for drying, a heat source, a fan and a drying chamber are connected through pipelines to form a circulating air duct, an air inlet valve and an air outlet valve are arranged, and when the air inlet valve and the air outlet valve are closed, hot air circulates in the circulating air duct; when new hot air needs to be introduced or the work is stopped, the air inlet valve and the air outlet valve are opened. The application provides a circulation system for drying, simple structure, it is easy and simple to handle, can continue the circulation with the hot-blast that dries once in the drying chamber, utilize its waste heat, reduce thermal loss, more be energy-conserving than open stoving mode.
The application also provides an energy-saving dryer with the circulating system and a using method thereof, and the circulating system is used for utilizing waste heat and reducing the energy consumption of the dryer.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a circulation system for drying according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an energy-saving dryer according to an embodiment of the present invention;
reference numerals: 1-a drying chamber; 2-a heat source; 21-an air inlet; 22-an air outlet pipe; 3, a fan; 31-an air inlet pipe; 32-air outlet pipe; 33-an exhaust pipe; 4-an air inlet valve; 5-an air outlet valve; 6-lifting device.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.
The embodiments of the present application are written in a progressive manner.
As shown in fig. 1 to fig. 2, an embodiment of the present invention provides a circulation system for drying, including: a drying chamber 1, a heat source 2 and a fan 3,
the heat source 2 is provided with an air inlet 21 and an air outlet pipe 22, the fan 3 is provided with an air inlet pipe 31 and an air outlet pipe 32, the air outlet pipe 22 is communicated with the heat source 2 and the inlet of the drying chamber 1, and the air inlet pipe 31 is communicated with the outlet of the drying chamber 1 and the fan 3; the air outlet pipe 32 is communicated with the air inlet 21 to form a circulating air duct;
the circulating air duct is provided with an air inlet and an air outlet, the air inlet is provided with an air inlet valve 4, and the air outlet is provided with an air outlet valve 5.
The application firstly provides a circulating system for drying, a heat source 2, a fan 3 and a drying chamber 1 are connected through pipelines to form a circulating air duct, an air inlet valve 4 and an air outlet valve 5 are arranged, and when the air inlet valve 4 and the air outlet valve 5 are closed, hot air circulates in the circulating air duct; when new hot air needs to be introduced or the work is stopped, the air inlet valve 4 and the air outlet valve 5 are opened. The application provides a circulation system for drying, simple structure, it is easy and simple to handle, can continue the circulation with the hot-blast that dries once in drying chamber 1, utilize its waste heat, reduce thermal loss, open stoving mode is more energy-conserving.
Preferably, the circulating air duct is provided with a humidity sensor and/or a filter screen.
A humidity sensor is arranged in the circulating air duct, so that the humidity of hot air in circulation can be sensed. When humidity does not reach the upper limit of settlement, let the heated air continue the circulation, utilize its waste heat, the ability of the higher hot-blast interior material of hot-blast heating drying chamber 1 of humidity is stronger simultaneously to improve work efficiency. When the humidity reaches the upper limit, the air inlet valve 4 and the air outlet valve 5 are opened, and new hot air is replaced for drying.
The filter screen can filter the impurity or the dust that hot-blast in the circulating air duct carried, improves hot-blast cleanliness factor to improve the cleanliness factor of the interior material of drying chamber 1. Especially, when the drying chamber 1 is provided with a structure that the drying pipe is opened to be directly contacted with the materials, the filter screen can effectively remove the impurities of the materials (such as grains) brought out by the hot air.
Preferably, an exhaust duct 33 is connected to the outer side of the air outlet.
The exhaust pipe 33 is fixedly connected to the outer side of the air outlet, and one end, far away from the air outlet, of the exhaust pipe 33 is led to other positions, so that high-humidity hot air discharged from the air outlet can be prevented from entering the air inlet.
Preferably, the circulating air duct is further provided with a dehumidifying device.
In order to further improve the utilization rate of the waste heat of the hot air, a dehumidifying device can be arranged in the circulating air duct to dehumidify the circulating hot air so as to prolong the circulating time of the hot air and further reduce the energy consumption. The dehumidifying device may use a common means such as a hygroscopic chemical substance.
Besides the dehumidification device, when the circulating hot air flows through the heat source to be heated continuously, partial humidity can be reduced.
Preferably, the air inlet and the air outlet are arranged on the air inlet pipe 31, and the air inlet is located between the air outlet and the fan 3.
Preferably, the air inlet and the air outlet are arranged on the air inlet pipe 31, and the air inlet is positioned between the air outlet and the fan 3, so that when new hot air needs to be replaced, high-humidity hot air exhausted from the drying chamber 1 is exhausted from the air outlet, meanwhile, new cold air is supplemented to the air inlet, the high-humidity hot air enters the air inlet 21 of the heat source 2 through the air outlet pipe 32 of the fan 3 after entering the fan 3, and the high-humidity hot air is heated and then is sent into the drying chamber 1 through the air outlet pipe 22 of the heat source, so that the efficiency of the hot air.
More preferably, the air outlet valve 5 is provided with a choke plate, and when the air outlet valve 5 is opened, the choke plate shields the inner part channel of the air inlet pipe 31, so that more high-humidity hot air is discharged through the air outlet. The air outlet valve 5 can be arranged in a structure that the central axis is hinged with the side wall of the air outlet, so that when the air outlet valve 5 is closed, the choke plate is tightly attached to the inner wall of the air inlet pipe 31, and the hot air circulation cannot be influenced; when the air outlet valve 5 is rotated outwards to be opened, the choke plate hinged at the other side rotates to block the flow of the hot air in the air inlet pipe 31.
An energy-saving dryer comprises a box body, a lifting device 6 and the circulating system, wherein a drying chamber 1 in the circulating system is arranged in the box body, the lifting device 6 is used for sending grains into the box body, or sending the grains discharged from the drying chamber 1 into the lifting device 6 of the box body again, the lifting device 6 comprises a lifting driving mechanism and a synchronous belt for supporting a grain hopper, and the lifting driving mechanism drives the synchronous belt to rotate circularly.
Preferably, a temperature sensor is further arranged in the box body.
The application still provides an energy-conserving drying-machine with above-mentioned circulation system, uses this circulation system to carry out waste heat utilization, reduces the energy consumption of drying-machine. Furthermore, the working efficiency can be further improved and the energy consumption can be reduced by controlling the working of the lifting driving mechanism of the lifting device 6. Specifically, after the lifting driving mechanism sends the material to be dried (such as grain) into the drying chamber 1, the lifting driving mechanism stops working in the hot air circulation process in the circulation air duct, the grain is kept in the drying chamber 1, the continuous heat exchange and dehumidification with the circulating hot air are realized, and the lifting driving mechanism is restarted to circulate the material in the box body when the circulation is needed or the heat exchange air is changed. Therefore, compared with other dryers, the energy-saving dryer provided by the application does not need higher hot air temperature when reaching the same material temperature, but improves the material temperature in a hot air circulation mode. Preferably, a temperature sensor is arranged to sense the temperature of the material, so that the control is convenient.
In this application, the box can be the box that the drying-machine was commonly used, and the material gets into by drying chamber 1 top, receives the effect of gravity and falls to drying chamber 1, gets into drying chamber 1 bottom after drying in drying chamber 1, then transports to the box top by hoisting device 6 from the bottom and circulate the stoving once more. The top of the box body can be provided with a throwing device to help the materials to uniformly fall into the drying chamber 1. Hot air uniformly enters the drying chamber 1 and can be divided by arranging a plurality of drying pipes so as to be realized.
The heat source 2 used in the present application may be a hot blast stove. The fan 3 used in this application is an exhaust fan.
A method for drying by using the energy-saving dryer comprises the following steps:
the lifting device 6 sends the grains into the drying chamber 1 of the box body;
keeping the air inlet valve 4 and the air outlet valve 5 in a closed state;
the heat source 2 and the fan 3 are started to heat air to form hot air which circulates in the circulating air duct and is continuously heated by the heat source 2, and meanwhile, the lifting driving mechanism is closed to enable grains to stay in the drying chamber 1;
and opening the air inlet valve 4 and the air outlet valve 5, discharging hot air in the circulating air duct, and simultaneously opening the lifting driving mechanism.
Preferably, when the circulating air duct is provided with a humidity sensor, the method further comprises: and after the humidity detected by the humidity sensor reaches a humidity set value, opening the air inlet valve 4 and the air outlet valve 5 to discharge hot air in the circulating air duct.
Preferably, when the box is provided with a temperature sensor, the box further comprises: and when the temperature detected by the temperature sensor reaches a temperature set value, closing the heat source 2, keeping the fan 3 to continue working, and keeping the lifting driving mechanism in a closed state, so that hot air circulates in the circulating air duct.
The application also provides a method for drying by using the dryer, and the method is matched by using the air inlet valve 4, the air outlet valve 5 and the lifting driving mechanism, and preferably uses the humidity sensor to monitor the humidity, so that the drying efficiency can be effectively improved, and the energy consumption is reduced. And when setting up temperature sensor, still can control whether heat source 2 works, further reduce the energy consumption.
Specifically, when setting up humidity transducer, temperature sensor simultaneously, the energy-conserving drying-machine that this application provided can work according to following step:
the lifting device 6 sends the grains into the drying chamber 1 of the box body;
keeping the air inlet valve 4 and the air outlet valve 5 in a closed state;
the heat source 2 and the fan 3 are started to heat air to form hot air which circulates in the circulating air duct and is continuously heated by the heat source 2, and meanwhile, the lifting driving mechanism is closed to enable grains to stay in the drying chamber 1;
when the temperature detected by the temperature sensor reaches a set temperature value, the heat source 2 is closed, the fan 3 is kept to work continuously, the lifting driving mechanism is kept in a closed state, and hot air is circulated in the circulating air duct;
and after the humidity detected by the humidity sensor reaches a humidity set value, the air inlet valve 4 and the air outlet valve 5 are opened, the hot air in the circulating air duct is discharged, and the lifting driving mechanism is started at the same time.
Example 1
A circulation system for drying, comprising: a drying chamber 1, a heat source 2 and a fan 3,
the heat source 2 is provided with an air inlet 21 and an air outlet pipe 22, the fan 3 is provided with an air inlet pipe 31 and an air outlet pipe 32, the air outlet pipe 22 is communicated with the heat source 2 and the inlet of the drying chamber 1, and the air inlet pipe 31 is communicated with the outlet of the drying chamber 1 and the fan 3; the air outlet pipe 32 is communicated with the air inlet 21 to form a circulating air duct;
the air inlet pipe 31 is provided with an air inlet and an air outlet, and the air inlet is positioned between the air outlet and the fan 3; the air inlet is provided with an air inlet valve 4, and the air outlet is provided with an air outlet valve 5. And the outer side of the air outlet is connected with an exhaust pipe 33.
The circulating air duct is provided with a humidity sensor and a filter screen. The circulating air duct is also provided with a dehumidifying device.
Example 2
The utility model provides an energy-conserving drying-machine, includes the box, hoisting device 6 to and embodiment 1 circulation system, drying chamber 1 in the circulation system sets up in the box, hoisting device 6 is used for sending into cereal into the box, or sends into the hoisting device 6 of box again with drying chamber 1 exhaust cereal, hoisting device 6 includes the promotion actuating mechanism and is equipped with the hold-in range that holds in the palm the grain fill, promotion actuating mechanism drive hold-in range circulation rotation. And a temperature sensor is also arranged in the box body.
The energy-saving dryer works according to the following steps:
the lifting device 6 sends the grains into the drying chamber 1 of the box body;
keeping the air inlet valve 4 and the air outlet valve 5 in a closed state;
the heat source 2 and the fan 3 are started to heat air to form hot air which circulates in the circulating air duct and is continuously heated by the heat source 2, and meanwhile, the lifting driving mechanism is closed to enable grains to stay in the drying chamber 1;
when the temperature detected by the temperature sensor reaches a set temperature value, the heat source 2 is closed, the fan 3 is kept to work continuously, the lifting driving mechanism is kept in a closed state, and hot air is circulated in the circulating air duct;
and after the humidity detected by the humidity sensor reaches a humidity set value, the air inlet valve 4 and the air outlet valve 5 are opened, the hot air in the circulating air duct is discharged, and the lifting driving mechanism is started at the same time.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A circulation system for drying, comprising: a drying chamber (1), a heat source (2) and a fan (3),
the heat source (2) is provided with an air inlet (21) and an air outlet pipe (22), the fan (3) is provided with an air inlet pipe (31) and an air outlet pipe (32), the air outlet pipe (22) is communicated with the heat source (2) and the inlet of the drying chamber (1), and the air inlet pipe (31) is communicated with the outlet of the drying chamber (1) and the fan (3); the air outlet pipe (32) is communicated with the air inlet (21) to form a circulating air duct;
the circulating air duct is provided with an air inlet and an air outlet, the air inlet is provided with an air inlet valve (4), and the air outlet is provided with an air outlet valve (5).
2. The circulation system of claim 1, wherein an exhaust duct (33) is connected to the outside of the air outlet.
3. The circulation system of claim 1, wherein the circulation duct is provided with a humidity sensor and/or a screen.
4. The circulation system of claim 1, wherein the circulation duct is further provided with a dehumidifying device.
5. A circulation system according to any one of claims 1-4, characterised in that the inlet opening and the outlet opening are arranged in the inlet duct (31), and that the inlet opening is located between the outlet opening and the fan (3).
6. An energy-saving dryer, characterized in that, comprising a box body, a lifting device (6), and the circulation system of any one of claims 1-5, the drying chamber (1) in the circulation system is arranged in the box body, the lifting device (6) is used for sending the grain into the box body, or sending the grain discharged from the drying chamber (1) into the lifting device (6) of the box body again, the lifting device (6) comprises a lifting driving mechanism, and a synchronous belt provided with a grain supporting hopper, and the lifting driving mechanism drives the synchronous belt to rotate circularly.
7. The energy saving dryer of claim 6, wherein a temperature sensor is further disposed in the box body.
8. A method for drying using the energy saving dryer of claim 6, comprising the steps of:
the lifting device (6) sends the grains into the drying chamber (1) of the box body;
keeping the air inlet valve (4) and the air outlet valve (5) in a closed state;
the heat source (2) and the fan (3) are started to heat air to form hot air which circulates in the circulating air duct and is continuously heated by the heat source (2), and meanwhile, the lifting driving mechanism is closed to enable grains to stay in the drying chamber (1);
and opening the air inlet valve (4) and the air outlet valve (5), discharging hot air in the circulating air duct, and simultaneously opening the lifting driving mechanism.
9. The method of claim 8, wherein when the circulating air duct is provided with a humidity sensor, further comprising: and after the humidity detected by the humidity sensor reaches a humidity set value, the air inlet valve (4) and the air outlet valve (5) are opened, and the hot air in the circulating air duct is discharged.
10. The method of claim 8, wherein when the tank is provided with a temperature sensor, further comprising: and when the temperature detected by the temperature sensor reaches a temperature set value, closing the heat source (2), keeping the fan (3) to continue working, and keeping the lifting driving mechanism in a closed state, so that hot air circulates in the circulating air duct.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112414030A (en) * | 2020-11-25 | 2021-02-26 | 湖南省农友盛泰农业科技有限公司 | Hot air circulation type grain drying machine |
CN112432446A (en) * | 2020-11-25 | 2021-03-02 | 湖南省农友盛泰农业科技有限公司 | Control method and system of hot air circulation type grain dryer |
CN114152043A (en) * | 2021-12-31 | 2022-03-08 | 湖南省农友机械集团有限公司 | Multifunctional dryer |
CN114166006A (en) * | 2021-12-31 | 2022-03-11 | 湖南省农友农业装备股份有限公司 | Positive pressure type temperature and humidity control drying system |
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