JP2001304757A - General-purpose drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a general-purpose drier of a flat shape in which uneven drying of to-be-dried matters is reduced, and also its operation is simplified by connecting a hot air generator of a circulation grain-drier to the general-purpose drier of a flat dryer shape. SOLUTION: The circulation drier 1 dries grains in circulation by blowing hot air. In the general-purpose drier, the exhaust part of the drier 1 is connected to a draft introduction part of the flat drier 35 to return exhaust of the flat drier to an aeration part. Further, a part for setting a matter to be dried is provided on an operator panel of the drier. When the setting part is selectively operated, a selective setting necessary for drying by the circulation drier is not accepted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general-purpose dryer in the form of a flat dryer connected to use a hot air generator of a circulating grain dryer, and to reduce drying unevenness of an object to be dried in the flat dryer. At the same time, we will try to simplify the operation.

[0002]

2. Description of the Related Art
Japanese Patent Application Laid-Open No. 11-287555 and Japanese Utility Model Application Laid-Open No. 1-153492 disclose general-purpose drying apparatuses in the form of a flat type drying apparatus using a circulation type grain drying apparatus. In each case, the suction type exhaust fan on the main body of the circulation type dryer is connected to a flat type dryer that dries grains, cigarettes, vegetables, etc. other than rice and wheat, and the flat type is made using the hot air generated by the circulation type grain dryer. It is intended to reduce the cost of introducing a dryer.

[0003] However, since the material to be dried placed on the drying shelf of the flat type dryer is in a stationary state, if the flowing hot air is biased, there are a portion where drying progresses locally and a portion where drying is delayed. There is a drawback that it is easy to be divided and therefore a uniform hot air flow structure must be adopted.

[0004]

SUMMARY OF THE INVENTION In view of the above, the present invention has taken the following technical measures while simplifying the operation. That is, the invention according to claim 1 is a general-purpose configuration having a configuration in which the exhaust portion of the circulating dryer 1 that is dried by being exposed to hot air while circulating grains and the ventilation introduction portion of the flat dryer 35 are connected. In the mold dryer, the exhaust air of the flat dryer is returned to the ventilation part of the circulation dryer.

According to a second aspect of the present invention, an exhaust portion of a circulation type grain dryer for drying by applying hot air while circulating grains and a ventilation introduction portion of a flat type dryer are connected. In a general-purpose drying apparatus, a drying-substance setting unit for processing with a flat-type dryer is provided in a drying-substance setting unit provided on an operation panel of a circulation-type drying machine. When the setting unit is selectively operated, the circulation-type drying machine is used. It is configured not to accept the selection setting required for drying the garbage.

[0006] As a material to be dried in the flat type dryer, for example, there is black soybean.

[0007]

According to the first aspect of the present invention, since the exhaust air in the upper space of the flat type dryer is returned to the exhaust chamber 10 of the circulation type dryer, the exhaust air with increased humidity is provided. Is again introduced into the flat dryer 35 while being mixed with new hot air. Therefore, conventionally, drying proceeds only in the portion where hot air acts, and it has been difficult to finish the drying state uniformly. However, by configuring as described above, the humidity can be increased,
Since high-temperature, high-humidity air can be supplied, it is possible to increase the grain temperature and promote the movement of internal moisture while suppressing the water removal power at high humidity, thereby finishing the drying state with less variation in moisture.

According to the second aspect of the present invention, when a drying object setting section to be processed by the flat type dryer is selected and operated, the selection setting necessary for drying of the circulation type drying machine which is a source of hot air is generated. Is not accepted, even if an operation is performed erroneously, the operation is not unexpectedly activated, the operation is facilitated, and safety can be ensured.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a grain dryer, in which a storage tank 2, a drying chamber 3, and a grain collecting chamber 4 are vertically installed in the machine frame from above, and the grain is circulated by driving an elevator 5 provided outside, and a drying chamber 3 is provided. In this case, the hot air generated by the combustion of the burner 6 and the suction fan 7 is dried by drying. The burner hot air flows from the hot air chamber 8 through the grain passage 9 to the exhaust air chamber 10, where the left and right exhaust air chambers 10, The air is exhausted from the exhaust wind tunnel 11 communicating with the air blower 11 to the outside of the apparatus with the suction fan 7.

Reference numeral 12 denotes a delivery valve, reference numeral 13 denotes a lower transfer spiral connected to the elevator 5, and reference numeral 14 denotes an upper transfer spiral connected to the upper side of the elevator 5, which can supply grains to a diffusion plate 15 above the storage tank 2. The burner 6, the grain circulation mechanism, and the like are performed by a computer including a memory that stores a control program necessary for drying control, various data, and the like. That is, the operation panel 16 is provided with various operation sections and is not provided with a drying object setting means. Specifically, switches 17 and 18 for selecting each of the operation modes of stuffing, drying, discharging and stopping are provided. 19 and 20 are provided, and a drying setting switch 21, a setting moisture switch 22, a filling amount setting switch 23, and a timer time increasing / decreasing switch 24 for determining a slow / fast drying speed in accordance with the setting of the grain type. , 25 are provided. Reference numeral 26 denotes an emergency stop switch for stopping the entire system in an emergency. Each time the drying setting switch 21, the setting moisture switch 22, and the indentation amount setting switch 23 are pressed once, they move sequentially (for example, to the right) in accordance with a predetermined numerical value or mode. If there is, the LEDs arranged in a row are turned on and displayed.

FIG. 6 shows a control block diagram. In addition to the setting information from the switches, the arithmetic control unit 28 of the computer built in the control box having the operation panel 16 detects the moisture meter 29 and the information of the elevator 5. Information of the grain flow detector 30 provided in the throwing part, hot air temperature detector 3
1 and temperature information of the exhaust air temperature detector 32 are input.
On the other hand, as the output information, a combustion system signal of the burner 6, for example, a fuel supply signal, a flow rate control signal thereof, or a motor control signal of a grain circulation system such as the vertical transfer spirals 13, 14, the elevator 5, the delivery valve 12, a suction fan motor control There are a signal, display of moisture on the display unit 33, display output of hot air temperature, exhaust air temperature, and the like.

The type of grain such as "paddy", "barley", and "wheat" is clearly indicated on the display of the drying setting switch 21. In the present embodiment, in addition to these, the material to be dried to be processed by the flat type dryer is used. There is a display of "black soybean" as a setting part. When selecting and setting this "black soybean", the control unit 28 performs the following functions and control. That is, the mode selection switch 1
Of the 7 to 20, each work mode of grain filling / discharging is not accepted, and when these are selected and set,
It is configured to warn of "switch receiving abnormality" with a buzzer or the like. In addition, when drying black soybeans, it is not necessary to display the set water content. Therefore, by setting the LED of the set water content display to be completely extinguished, an unsightly display is reduced as much as possible to prevent erroneous operation.

Reference numeral 35 denotes a box shape, and the inside thereof is a perforated mesh 36.
Is a flat type dryer having a configuration divided into upper and lower spaces, of which the exhaust duct 38 of the suction fan 7 is connected to the lower side space 37. For this reason, the exhaust air from the suction fan 7 reaches the lower space 37 in a compressed air state and is further dispersed to blow up the upper space 39. The above-mentioned net 3
On the upper surface of 6, an object to be dried, for example, black soybeans, can be bundled for each branch and placed in a vertical position.

The upper surface of the flat dryer 35 is covered with a mesh net 40. In the illustrated example, several arc-shaped net receiving aggregates 41, 41... Is stretched and supported. 42, 42 are rails for supporting the above-mentioned aggregates 41, 41 so as to be movable left and right;
It is intended to make the work easier.

One end of the reduction duct 43 is fixed to the ceiling of the flat type dryer 35 so as to look into the ceiling, and the other end of the duct 43 is fixed to the exhaust chamber 10 of the circulation type dryer 1. With this configuration, the suction action of the suction fan 7 also works in the upper space of the flat type dryer 35, and the air is returned to the circulation type dryer 1 side except for a part of the exhaust air that is opened to the outside through the mesh net 40. This is a configuration that can be supplied to the dryer 35.

The operation of the above example will be described. A bundle of black soybeans is placed upright on the flat type dryer 35. When the preparation work of the flat type dryer 35 is completed, the drying setting switch 21 of the operation panel 16 of the circulation type dryer 1 is operated to select and set “black soybean”. Next, when the drying switch 18 is turned on, the burner 6 burns, and the hot air passes through the empty circulation-type dryer 1 and enters the lower space 37 of the flat-type dryer 35 through the exhaust air duct 38, from which the hot air flows upward. Rises. It acts on black soybeans during this ascent process and dries it. By the way, in the above embodiment, the exhaust air temperature detector 32 is provided, and the amount of fuel supplied to the burner 6 is controlled so as to reach a preset temperature. The setting of this temperature is switched with the selection of "black soybean" and the setting of the filling amount to the exhaust air temperature setting.
It is set up and down by operating the insertion amount setting switch 23.

The hot air rising from the lower space of the flat type dryer 35 acts on the black soybean bundle in the standing posture to dry it. In the above embodiment, since the exhaust duct in the upper space is returned to the exhaust chamber 10 of the circulation type dryer by disposing the reduction duct 43, the exhaust wind with increased humidity mixes with the new hot air. Then, it is again introduced into the flat dryer 35.
Therefore, conventionally, drying proceeds only in a portion where hot air acts, and it has been difficult to finish the dried state uniformly.
With the above configuration, the humidity can be increased, and high-temperature, high-humidity air can be supplied. Therefore, the grain temperature is increased while suppressing the water removal power at the high humidity, and the internal moisture transfer is promoted. Therefore, it can be finished in a dry state with less variation in moisture.

It is assumed that the above-mentioned drying is completed when a predetermined drying time elapses.

[Brief description of the drawings]

FIG. 1 is an overall perspective view.

FIG. 2 is an overall side view partially sectioned.

FIG. 3 is a front sectional view of the circulation type dryer.

FIG. 4 is a plan sectional view thereof.

FIG. 5 is a front view of the operation plate.

FIG. 6 is a control block diagram.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Grain dryer, 2 ... Storage tank, 3 ... Drying room, 4 ... Grain collecting room, 5 ... Elevator, 6 ... Burner, 7 ... Suction fan, 8 ...
Hot air chamber, 9 ... grain passage, 10 ... exhaust air chamber, 11 ... exhaust air wind tunnel, 12 ... delivery valve, 13 ... lower transfer spiral, 14 ... upper transfer spiral, 15 ... diffusion board, 16 ... operation panel, 17 , 1
8, 19, 20 work mode switch, 21 drying setting switch 21, 22 setting moisture switch, 23 setting amount setting switch, 24, 25 increase / decrease switch, 26 emergency stop switch, 28 arithmetic control Part, 29 ... moisture meter, 3
0: grain flow detector, 31: hot air temperature detector, 32: exhaust air temperature detector, 33: display unit, 35: flat dryer, 36
… Cut net, 37… Lower space, 38… Exhaust air duct, 39
... upper space, 40 ... mesh net, 41 ... aggregate for net receiving, 42 ... rail, 43 ... reduction duct

Claims (3)

[Claims] 1. A general-purpose drying device having a configuration in which an exhaust portion of a type grain dryer for drying by applying hot air while circulating grains and a ventilation introduction portion of a flat type dryer is provided. A general-purpose dryer configured to reduce exhaust air from the dryer to the ventilation part of the circulation dryer. 2. A general-purpose drying apparatus having a configuration in which an exhaust portion of a circulation type grain dryer for drying by applying hot air while circulating grains and a ventilation introduction portion of a flat type dryer is provided. The drying object setting means provided on the operation panel of the mold dryer is provided with a drying object setting section for processing with a flat dryer, and when the setting section is selected and operated, the selection setting required for drying of the circulation drying machine is performed. General-purpose drying device with a configuration that does not accept refrigeration. 3. The general-purpose drying apparatus according to claim 1, wherein the material to be dried of the flat-type dryer is black soybean.