JPS6196384A - Air flow regulator in cereal grain drier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to an air volume control device in a grain dryer.

Problem to be Solved by the Invention A method for drying grains by sucking and exhausting hot air generated by a burner through a hot air chamber, a drying chamber, and an exhaust chamber with an exhaust fan, and drying the grains flowing down in the drying chamber with the hot air. In the grain dryer,
For example, when the number of grain layers accommodated in the dryer is small, the temperature of the hot air flowing through the drying chamber must be lower than that of the hot air chamber, and unless the drying air deposition is reduced, the grains will become over-dried and the grains will become curly. or crushed particles may occur.

Means for Solving the Problem This invention provides a method for transferring hot air generated from a burner (1) to a hot air chamber (
2), drying room where grains can flow down (3), and ventilation room (4)
In a grain dryer that sucks and exhausts air through an exhaust fan (5) through a hot air chamber (2), a sensor (6) that detects a temperature below a predetermined temperature in this hot air chamber (2) draws outside air directly into the exhaust chamber (4). Wind Iil:r provided with an opening/closing port (7) that opens as much as possible
The configuration is an IR section device.

Functions and Effects of the Invention While the grains housed in the dryer flow down inside the drying chamber (3), the hot air generated by the burner (1) is passed through the drying chamber (3) from the hot air chamber (2). When the grain layer to be dried is small, when the sensor (6) detects that the hot air temperature in the hot air chamber (2) is below a predetermined temperature, the sensor (6) ) opens the opening/closing port (7) that draws outside air directly into the exhaust chamber (4), and the outside air is sucked in through this opening/closing opening (7).
Since the amount of hot air ventilated from the hot air chamber (2) to the drying chamber (3) decreases, a decrease in the temperature of the hot air is accurately detected and the temperature of the hot air in the drying chamber (3) is lowered, and the grains are can effectively prevent overdrying.

Embodiment In the illustrated example, the drying machine wall is 4 m long (8) The machine wall has a rectangular shape in a plan view long in the longitudinal direction and consists of 1 front and rear wall plates (9), (9) and left and right wall plates (10), (10), This a-wall E section has ceiling plates (11) and (11), and an operation box (12) is detachably attached to the front wall plate (9).

A lower helical transfer gutter (13) located in the left and right center of the m wall and extending in the front-back direction is provided, and above this lower helical transfer gutter (13) is an m9 chamber which is V-shaped in the front view. (14)
In this grain collecting room (14), vertical drying rooms (3), (3) are formed between the left and right ventilation mesh plates and communicated with each other, and these drying rooms (3), ( 3) Feeding rolls (+5) and (+5) are provided at the bottom. An inclined plate is provided above each of the ventilation net plates, a partition plate is provided below, a hot air chamber (2) is formed between the inner ventilation net plates, and the front wall plate (9) is provided.
The outer ventilation mesh plate and the left and right wall plates (10), (1G) communicate with the burner (1) provided in the burner case provided in the section.
A ventilation chamber (4) is formed between the rear wall plate (9) and a box-shaped ventilation box (17) attached to the rear wall plate (9). It communicates with an exhaust fan (5) provided in the exhaust box (17). The upper wall plate of the ventilation box (17) is provided with an opening (7) for directly sucking outside air into the ventilation chamber (4). The rear wall plate (9) has a sen? - (6) is provided, and this sensor (6) has a shaft (!9) fixed to a mouth-shaped case (18), and this case (18) is attached to the inner wall of the rear wall plate (9) in the hot air chamber. (2) Attach the shaft so that it protrudes inward.
8) has a spring-like temperature sensor (2G) made of a shape memory alloy, an L-shaped opening/closing plate (21) fixed to a cylindrical boss (16), and a resilient spring (22). When the hot air temperature in the nuclear hot air chamber (2) is higher than a predetermined temperature, the spring (22) springs and pushes the opening/closing plate (21).

This opening/closing plate (21) closes the opening/closing opening (7) of the upper wall plate portion of the exhaust air volume (17), and when the temperature of the hot air in the hot air chamber (2) falls below a predetermined temperature, the shape memory alloy The temperature sensor (20) extends and pushes the opening/closing plate (21) outward, causing the ventilation box (17) to close.
The opening/closing opening (7) of the earthen wall plate section is in an open state, and the outside air flows into the exhaust room (4) from the opening/closing opening (7) of the exhaust fan (5).
When the hot air temperature in the hot air chamber (2) exceeds a predetermined temperature, the opening/closing plate (21) is opened as described above.
This configuration restores the opening/closing opening (7) to a closed state.

A storage chamber (23) is formed above the drying chambers (3), (3), and the ceiling plates (11), (II) are formed above the storage chamber (23).
An upper helical transfer gutter (24) is provided along the upper helical transfer gutter (20), and the central part of the upper helical transfer gutter (20) transfers the transferred grains to this storage chamber (24).
23) Open a supply port for supplying the inside, and provide an enlarged plate (25) at the bottom of this supply port.

This diffusion plate (25) is configured to uniformly diffuse and return grains into the storage chamber (23).

The ascending F5141 (2B) is removably attached to the front part of the front wall plate (9), and there is a packet conveyor (27) inside.
A belt is stretched between the upper and lower pulleys, and a removable cable (28) is provided between the upper end and the starting end of the helical transfer gutter (24) for communication between the lower end and the lower part. A supply gutter (29) is provided between the terminal end of the helical transfer gutter (13) and communicated therewith.

Note that when the temperature of the hot air in the hot air chamber (2) is 1, for example, low temperature, standard temperature, and high temperature are detected in stages by the temperature sensor (20) made of the shape memory alloy of the sensor (6). As a configuration, the opening area of the opening/closing port (7) may be changed as appropriate, and a temperature sensor (20) made of the shape memory alloy may be provided outside the machine to monitor the outside air temperature and the hot air chamber ( It is also possible to detect both the hot air temperature in 2) and operate the opening/closing plate (2).

The hot air generated from the burner (1) installed in the front wall board (9) is sucked by the exhaust air 411 (5) installed in the ventilation box (17), and is drawn from the hot air chamber (2) to the drying chamber ( 3) and the exhaust chamber (4), and the grains stored in the dryer (8) are exposed to this hot air and dried while flowing down inside the drying chamber (3), and are then fed out. It is fed out to the lower part by the roll (15), transferred and discharged into the supply gutter (23) by the lower helical transfer gutter (13), conveyed to the upper part by the grain raising m (2B), and then transferred to the upper helical transfer gutter (24). Transferred and supplied onto the diffusion plate (25), diffused and reduced into the storage chamber (23) by the diffusion plate (25),
When the grains are circulated and dried and reach a specified moisture content, the dryer (8) is automatically stopped under automatic control from the operation box (12), but if the amount of shell grains accommodated in the dryer (8) is small. At this time, the hot air temperature is electrically controlled to a low temperature by operating the operation box (12), and the hot air volume is controlled by the sensor (6) installed in the hot air chamber (2).
2) When the temperature of the hot air inside is detected to be below a predetermined temperature, the ventilation box (17) that sucks outside air directly into the ventilation chamber (4) is held in a state where the opening (7) provided in the earthen wall panel is closed. The opening/closing plate (
21) operates outward, the opening/closing port (7) becomes open, and outside air is discharged from the opening/closing port (7) into the ventilation chamber (
4) The exhaust air 41 (5) is directly sucked into the dryer (8), and the intake of this outside air reduces the amount of hot air flowing from the hot air chamber (2) to the drying chamber (3). Even when the grains housed inside are small violet, grains can always be dried stably.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an enlarged side sectional view of a portion thereof, and FIG. 2 is a side view. FIG. 3 is a sectional view taken along the line AA in FIG. 2. In the figure, symbol (1) is a burner, and symbol (2) is a hot air chamber. (3) is a drying room, (4) is an exhaust room, (5) is an exhaust fan, (
6) indicates a sensor, and (7) indicates an opening/closing opening.

Claims (1)

[Claims] The hot air generated from the burner (1) is passed through the hot air chamber (2), the drying chamber (3) where the grains can flow down, and the exhaust chamber (4), and then through the exhaust fan (
In a grain dryer that sucks and exhausts air in 5), a sensor (6) that detects a temperature below a predetermined temperature in the hot air chamber (2) opens and closes the opening to directly draw outside air into the exhaust chamber (4). (7) An air volume adjustment device.