JPS61205781A - Preheated air blasting device for 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] Industrial applications The present invention relates to a preheating air blowing device for a grain dryer.

2. Description of the Related Art Conventionally, during drying work, there has been a device in which outside air directly passes through the burner section without blowing preheated air to the burner section, regardless of the outside air temperature.

Problems to be Solved by the Invention By sucking and exhausting the hot air generated by the front burner with the rear exhaust fan, this hot air is ventilated into the drying chamber, and the grains flowing down in this drying chamber are removed. In a dryer that dries by exposing it to hot air, during drying work when the outside air temperature is low, this low outside air passes through the burner section, and the burner is cooled by this low outside air and is used for combustion. The vaporization of the fuel deteriorates, and as a result, more carbon is generated, which may result in poor combustion conditions in the burner.

Means for Solving the Problems This invention is designed to vent hot air generated from a burner (1) at the front to a drying chamber (2) and suck and exhaust it with an exhaust fan (3) at the rear. A preheated air blowing device for a grain dryer is configured to blow the heat storage air stored in the heat storage device (4) to the burner (1) section when the temperature falls below a predetermined temperature. composition.

Functions and Effects of the Invention While the grains flow down inside the drying chamber (2), the hot air generated from the burner (1) and the outside air passing through the burner (1) section are sucked by the exhaust fan (3). As a result, the two are mixed and ventilated to the drying chamber (2), where they are exposed to this hot air and dried. However, if the outside air temperature falls below a predetermined temperature during this drying operation, the heat storage device (4) Thermal storage air that has stored heat inside is blown from the heat storage device (4) to the burner (1), and the blown heat storage air and the hot air generated from the burner (1) are sent to the drying room (2). The grains are dried by ventilation.

Conventionally, even during drying work when the outside air temperature was low, the intake air sucked into the burner (1) was this low outside air, but with the present invention, the outside air temperature is lower than a predetermined temperature. Then, the heat storage air stored in the heat storage device (4) is blown to the burner (1), so that the burner (1) is not exposed to low outside air and cooled. Therefore, this burner (1) always burns in a stable state.

Embodiment In the illustrated example, the model of the dryer (5) has a rectangular shape in plan view, which is long in the front and back direction, and consists of front and rear wall plates (6), (6) and left and right wall plates (7), (7). Ceiling plates (8), (8) are provided on the upper part of the model, and an operating device (9) is detachably attached to the front wall plate (6).

Located in the center of the lower part of the model and extending in the front and back direction, there is a lower transfer gutter (11) with a spiral shape (11) in the front view.
), and above this lower transfer gutter (11) is provided a grain collection chamber (12) which is V-shaped in front view and communicates with the grain collection chamber (12).
) On the top, drying chambers (2), (2) are vertically formed and communicated between the left and right ventilation mesh plates, and at the bottom of these drying chambers (2), (2), there is a rotatable delivery valve (13). ), (13).

An inclined plate is provided at the upper part of each ventilation mesh plate, and a partition plate is provided at the lower part, and a hot air chamber (14) is formed between the inner ventilation mesh plates, and the burner provided in the front wall plate (6) is provided. It communicates with a burner (1) built into the case (15). A ventilation chamber (
1B), (18) and the rear wall plate (6).
A motor (40) is provided at the bottom of the rear wall plate (6) to connect the exhaust fan (3).
3) It is configured to rotationally drive the delivery valve (13), the helix (10), etc.

A storage chamber (17) is formed above the drying chamber (2), (2), and the ceiling plate (8), (
Upper transfer gutter (1) with spiral (18) installed along
9), a supply port for supplying the transferred grains into the storage chamber (17) is opened in the center of the upper transfer gutter (19),
A diffusion plate (20) is provided at the bottom of this supply port, and the structure is such that the grains are uniformly diffused and returned into the storage chamber (17) by this diffusion plate (20).

The grain raising machine (21) is detachably attached to the front part of the front wall plate (6), and inside the grain elevator (21), a bucket conveyor (22) belt is stretched between the upper and lower pulleys, and the upper end and the upper transfer gutter ( 19)
A dispensing tube (23) is provided between the starting end and the lower transfer gutter (11) for communication, and a supply gutter (24) is provided between the lower end and the terminal end of the lower transfer gutter (11) for communication. A motor (41) is provided on the 1st part side of the machine (21), and this motor (41) moves the bucket conveyor (22) belt and the helix (18).
) etc. is configured to rotate.

A heat storage device (4) is provided at the front of the dryer (5), and this heat storage device (4) takes in outside air, heats the outside air, converts it into hot air, stores heat, and blows out the stored heat air. The upper part is equipped with a heat storage fan (25) and a heat storage fan motor (26), the lower part is equipped with a blower tube (27), and inside this blower tube (27) is a rotatable shaft ( 28) are supported vertically, and a blower valve (29) is fixed to this shaft (28).
A blower valve opening/closing motor (30) is provided above the blower tube (27), and the shaft of this blower valve opening/closing motor (30) and the shaft (28
) are connected to each other, and the rotation of the blower valve opening/closing motor (30) opens and closes the blower valve (28) to blow the heat stored air in the heat storage device (4).

The operating device (9) is box-shaped and has a start switch (31), a stop switch (32) and various holes (3) on the surface.
3) etc., and an outside air temperature detection sensor (34
), and has a control device (35) inside, and the control device (35) is connected to the outside air temperature detection sensor (3
An A-D converter (3B) converts the outside air temperature value detected by 4), and the outside air temperature value A-D converted by this A-D converter (36) may be manually input or switch (3
1), (32), and an input circuit (37) into which the operations of the various arcs (33) are input; a CPU ( 38), and an output circuit (39) that outputs in response to various commands from this CPU (38), and this control device (35) controls the heat storage blower motor (2El) and the blower valve opening/closing motor (30). ) and the motors (40), (41), etc. are controlled to start, stop, etc.

When the outside air temperature detection sensor (34) detects a temperature below a predetermined temperature, this detection causes the control device (35) of the operating device (9) to control the heat storage blower motor (26) and the blower valve opening/closing motor (30). The burner case (15) is configured to rotate and blow the heat storage air stored in the heat storage device (4) into the burner case (15).

By operating the operating device (9), hot air generated from the burner (1) provided on the front wall plate (6) is directed to the rear wall plate (6).
The air is sucked and exhausted by the exhaust fan (3) installed in the hot air chamber (14).
), the grains stored in the dryer (5) are exposed to this hot air and dried while flowing down inside the drying chamber (2), and the grains are dried by passing through the delivery valve (13). The grain is fed out to the lower part by the helix (10) and the lower transfer gutter (11) and discharged into the supply gutter (24). ) and the upper transfer gutter (18) onto the diffusion m (20), and this diffusion plate (20)
The grains are evenly diffused and reduced into the storage chamber (17), circulated and dried, and when the grains reach the specified moisture content, the dryer (5) is automatically stopped under automatic control using the operating device (9). When the outside air temperature falls below a predetermined temperature during work, the outside air temperature detection sensor (34) detects the outside air temperature that has become below the predetermined temperature, and in conjunction with this detection, the control device (9) of the operating device (9) is activated. 35) of the heat storage fan motor (2B) of the heat storage device (4).
) and the blower valve opening/closing motor (30) rotate, and the heat storage device (
The blower valve (28) in the blower tube (27) of 4) is opened, and the heat storage air stored in the heat storage device (4) is blown into the burner case (15) through the blower tube (27). ,
The stored heat air and the hot air generated from the burner (1) are mixed and passed through the drying chamber (2) to dry the grains.

When the outside temperature drops below a predetermined temperature, the burner (1)
Since the heat storage air is blown from the heat storage device (4) to the burner (1), the burner (1) is not cooled by outside air, so it always burns in a normal state.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a block diagram, Fig. 2 is a side view, Fig. 3 is an enlarged sectional view taken along line A-A in Fig. 2, and Fig. 4 is a part thereof. FIG. In the figure, reference numeral (1) indicates a burner, (2) a drying chamber, (3) an exhaust fan, and (4) a heat storage device.

Claims (1)

[Claims] The hot air generated from the burner (1) at the front is ventilated to the drying room (2) and is sucked and exhausted by the exhaust fan (3) at the rear.
A preheating air blowing device for a grain dryer configured to blow heat storage air stored in the burner (1) to the burner (1) using the heat storage (4).