JPH0232018B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a grain tempering device that serves as a grain dryer, a grain humidifier, and a grain tank.

Conventional technology When storing grain, especially raw paddy, it is often necessary to ventilate the stored grain, and in conventional grain tanks, ventilation is performed from the bottom to the top of the tank, and the grain is large vertically. Because it was stored so thick, it required a lot of wind pressure to ventilate it.

In order to improve this drawback, a perforated wall ventilation pipe is installed in the center of the ventilated body with an external adjustment chamber, and the inlet and outlet between the body and the perforated wall ventilation pipe are connected to buckets. An air conditioner and a humidifier are connected to the outlet and inlet of the elevator, and the base end of the introduction tube is connected to the air conditioner and the humidifier, and the other end is connected to the porous wall ventilation tube. A brown rice conditioning device was developed in 1973 that discharged the air in the conditioning chamber to the outside and replaced it with fresh, temperature-controlled, humid air.
- Proposed as Publication No. 5220.

In addition, a heating device and a blower are provided in a wheat tank in which a plurality of air guide boxes each having a ventilation wall are housed in parallel, and the base end of the air conduit is connected to the heating device and the blower, and the base end of the air conduit is connected to the heating device and the blower. One of the branch pipes is connected to the first air guide box and the other to the second air guide box via air passages, and the base end of the exhaust pipe is connected to the heating device and the blower. At the same time, one of the branch pipes of the exhaust pipe is connected to the second air guide box and the other to the first air guide box via air passages, and the air feed pipe is connected to the second air guide box. a switching valve that selectively switches the exhaust pipe line to communicate with the first air guide box and the second air guide box; A switching valve is provided for switching the air supply line to communicate with the first air guide box, and when the air supply line communicates with the first air guide box, the exhaust line communicates with the second air guide box, and when the exhaust line communicates with the first air guide box, the exhaust line communicates with the first air guide box. Utility Model Publication No. 35-22687 proposes a wheat temperature conditioning device in which these switching valves are alternately switchable so that the air supply pipe line communicates with the second air guide box when it is connected to the second air guide box. has been done.

Problems to be Solved by the Invention The present invention utilizes first and second switching valves that alternately switch the ventilation supplied to the ventilation chamber outside the porous-walled cylinder and the porous-walled ventilation tube inside. The grain is constantly supplied with fresh conditioned air to clean the grain, and the direction of ventilation to the grain is reversed to prevent uneven tempering, and this operation is performed using only two switching valves. It is an object of the present invention to provide a grain tempering device that is easy to operate and has a reduced number of parts.

Means for Solving the Problems In order to solve the above problems, the grain tempering device of the present invention includes a porous wall ventilation pipe erected in the center of the inside of a porous wall cylinder provided with a ventilation chamber on the outside, and A grain tank is formed by using a grain layer between the wall cylinder and the porous wall ventilation pipe, and the grain feeding port and discharge port of this grain tank are connected to the discharge port and supply portion of the grain lifting machine to complete the grain circulation process. A tempered air generation device consisting of a heat generator and a humidifier is provided, a proximal end of a branched feed pipe is connected to the tempered air generation device, and one of the branched feed pipes is connected to the ventilation chamber. , a ventilation path having a second exhaust port communicating with the atmosphere between the other side of the branch pipe and the inside of the porous wall ventilation pipe, and communicating with each other via a ventilation path having a first exhaust port communicating with the atmosphere; The ventilation chamber communicates with the ventilation passage via a first exhaust port and has a first exhaust port.
A first switching valve that selectively communicates with one of the exhaust port and the branch pipe is provided in the ventilation passage having the second exhaust port, and the inside of the porous wall ventilation pipe is connected to the second switching valve.
A second switching valve is provided that selectively communicates with either the exhaust port of the ventilator or the branch pipe, and when the ventilation chamber and the tempered air generator communicate with each other, the inside of the porous wall ventilation pipe and the branch pipe are connected to each other. When the ventilation chamber and the first exhaust port communicate with each other, and the inside of the porous wall ventilation tube communicates with the tempered air generator, the first and second switching ports communicate with the ventilation chamber and the first exhaust port. The operation is characterized in that the valves are configured to be freely switchable alternately. Raw grain is supplied to the grain tank via the grain frying machine to fill it, and the second ventilation passage of the other side is connected to the tempered air generator. Operate the switching valve to close the other branch pipe side, operate the first switching valve of one ventilation path to open one branch pipe side, and connect the tempered air generator to the tempered air generator. The generated drying hot air flows into the ventilation chamber from one branch pipe through one ventilation path, and from the annular ventilation chamber passes through the peripheral wall surface of the porous wall cylinder to the cylinder wall surface of the porous wall ventilation tube provided in the center. The grain layer formed inside the porous-wall cylinder is ventilated and dried, and the exhaust air is discharged into the atmosphere outside the machine from the second exhaust port through one of the ventilation channels.

Next, the switching valve is switched to the opposite side, and the drying hot air from the tempered air generator flows into the porous wall ventilation pipe through the other branch pipe and ventilation path, and passes through the wall surface of the ventilation pipe. The grains flow out radially and uniformly onto the peripheral wall surface of the porous-walled cylinder, and each grain inside the porous-walled cylinder is ventilated and dried.

Embodiments Examples of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 denotes a grain tank, and the tank 1 has a ventilation chamber 3 provided outside a porous wall cylinder 2, and a porous wall ventilation pipe 4 erected in the center of the cylinder.
In addition, a grain lifting machine 5 is attached to one side of the tank 1, and its discharge port is connected to a grain feeding port 6 at the top of the tank through a flow pipe 7, and the feeding section and a discharge port at the bottom of the tank 1 are connected. 8 are connected by a conveyor 9 to form a grain circulation process. A is a grain layer formed inside the porous wall cylinder 2. In addition, a tempered air generation device 15 consisting of a heat generator 10, a humidifier 11, and an air blower 12 is provided separately, and a control device 16 is attached thereto, and the base ends of the branching pipes 13 and 14 are connected to generate tempered air. It connects to the device 15 and connects one 13 side of the branching pipes 13 and 14 to the porous wall ventilation tube 4 via a ventilation passage 18 with a flow rate control valve 17, and connects the other 14 side to the ventilation chamber 3. A second exhaust port 21 communicating with the atmosphere is provided at the end of the ventilation path 18, which communicates through a ventilation path 20 with a flow rate control valve 19.
A second switching valve 22 is provided at the branch port, and
A first exhaust port 23 communicating with the atmosphere is provided at the terminal end of the ventilation path 20, and a first switching valve 24 is provided at the branch port thereof. 25 is a humidifier 11 and a blower 1
This is a conduit that connects the two.

The control device 16 is provided with a timer 26 so as to be able to adjust the ventilation time of the ventilation fan 12, and the control device 16 also controls the temperature adjustment section 27 of the heat generator 10 and the humidity adjustment section 28 of the humidifier 11. You can contact us to change the wind temperature and wind humidity as appropriate, or
It is formed so that the ratio can be changed, and it is also formed so that the air volume can be appropriately adjusted by communicating with the air volume adjustment section 29 of the blower 12.

In the above configuration, the second switching valve 2 of the ventilation passage 18 supplies raw grain to the grain tank 1 via the grain frying machine 5 to fill it and communicates with the tempered air generator 15.
2 to close the branching flue pipe 13 side, operate the first switching valve 24 of the ventilation path 20 to open the branching flue pipe 14 side, and start the hot air generator 10 and blower 12. Then, drying hot air at a predetermined temperature is generated in the tempered air generator 15, and the hot air flows from the branching flue pipe 14 into the ventilation chamber 3 via the ventilation path 20.
The hot air from the annular ventilation chamber 3 passes through the peripheral wall surface of the porous wall cylinder 2 to the cylinder wall surface of the porous wall ventilation cylinder 4 provided at the center, and the grain layer formed in the cylinder body 2 is ventilated and dried. The exhaust air is exhausted from the second exhaust port 21 through the ventilation passage 18 into the atmosphere outside the machine. Then, the grains in the grain layer are circulated through the grain layer A in the grain tank 1 and dried by a grain circulation process.

A timer 26 provided in the control device 16 causes each of the switching valves 22 and 24 provided in each of the ventilation passages 18 and 20 to switch to the opposite side after a predetermined period of time between switching of the second and first switching valves 22 and 24 has elapsed. Since the control device 16 is set to operate, when the predetermined time has elapsed, the switching valves 22 and 24 are switched to the opposite side by the signal from the timer 26, and the drying hot air from the tempered air generator 15 is switched to the opposite side. are branch pipe 13, ventilation passage 1
8 into the porous wall ventilation tube 4, and the ventilation tube 4
The grains flow out radially and uniformly through the cylinder wall surface onto the peripheral wall surface of the porous-wall cylinder 2, and each grain in the cylinder 2 is ventilated and dried. Then, the alternating ventilation is continuously performed several times over a predetermined period of time.

Further, when humidifying the grain, the heat generator 10 is stopped by operating the adjustment units 27 and 28 of the control device 16, and the humidifier 11 and the blower 1 are
2, and also the aforementioned switching valves 22 and 24.
By performing the switching operation, ventilation by humidification effect and alternate ventilation can be appropriately selected and implemented. Further, by operating the air volume adjustment section 29, the air volume of each wind can be adjusted to an arbitrary ratio.

Effects of the Invention As described above, according to the grain conditioning device of the present invention, the first and second switching modes alternately switch the ventilation supplied to the ventilation chamber outside the porous wall cylinder and the porous wall ventilation tube inside. A valve is used to exhaust the exhaust gas into the atmosphere, constantly supplying fresh tempered air to the grain to clean the grain, and reverse the direction of ventilation to the grain to prevent patchy tempering. Since only two switching valves are used, the operation is simple and the number of parts can be reduced.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, with FIG. 1 being a partially cutaway side view of the device, and FIG. 2 being a partially cutaway plan view thereof. DESCRIPTION OF SYMBOLS 1... Grain tank, 2... Porous wall cylinder, 3... Ventilation chamber, 4... Porous wall ventilation tube, 5... Grain lifting machine, 6... Grain feeding port, 7... Flow pipe, 8... Discharge port, 9... Conveyor ,
10... Heat generator, 11... Humidifier, 12... Air blower,
13... Branching flue pipe, 14... Branching flue pipe, 15... Refined air generator, 16... Control device, 17... Flow rate control valve, 18... Ventilation path, 19... Flow rate control valve, 20... Ventilation path, 21 ...Second exhaust port, 22...Second switching valve, 23...Second exhaust port, 24...First switching valve,
25... Feed pipe, 26... Timer, 27... Temperature control section, 28... Humidity control section, A... Grain layer.

Claims (1)

[Scope of Claims] 1. A grain tank in which a porous wall ventilation tube is erected at the center of the interior of a porous wall cylinder provided with a ventilation chamber on the outside, and a grain layer is formed between the porous wall cylinder and the porous wall ventilation tube. At the same time, the grain feeding port and discharge port of this grain tank are connected to the discharge port and supply part of the grain frying machine to form a grain circulation process, and a tempered air generation system consisting of a heat generator and a humidifier is formed. A device is provided, the proximal end of the branch pipe is connected to the tempered air generator, and one of the branch pipes and the ventilation chamber are connected through a ventilation passage having a first exhaust port communicating with the atmosphere. and a second pipe that communicates the other side of the branch pipe and the inside of the porous wall ventilation pipe with the atmosphere.
The ventilation passage having the first exhaust port has a first exhaust port that communicates with the first exhaust port and the branch pipe, and the ventilation chamber has a first exhaust port that communicates with either the first exhaust port or the branch pipe. A second ventilation passage provided in the first switching valve and having a second exhaust port is provided with a second ventilation pipe in which the inside of the porous wall ventilation pipe selectively communicates with either the second exhaust port or the branch pipe. A switching valve is provided, and when the ventilation chamber and the tempered air generator communicate with each other, the interior of the porous wall ventilation tube and the second exhaust port communicate with each other, and the interior of the porous wall ventilation tube and the tempered air generator communicate with each other. The grain tempering device is characterized in that the first and second switching valves are formed to be able to be switched alternately so that when the ventilation chamber and the first exhaust port communicate with each other, the ventilation chamber and the first exhaust port communicate with each other. 2. The grain tempering device according to claim 1, wherein the tempered air generating device has a control device that changes the ratio of ventilation time, wind temperature, wind humidity, air volume, etc.