JPH10288460A - Exhauster of grain dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the installation adaptability of a dryer to a workshop by a method wherein the shape of the section of an exhaust duct fitted to the fore end part of a centrifugal fan is made square or rectangular from the base part to a discharge port in the fore end thereof. SOLUTION: The shape of the section of an exhaust duct 17 fitted to a centrifugal fan 16 is formed to be square or rectangular longitudinally from the base part 18a to the discharge port part 18 in the fore end thereof and the external shape is formed like a letter L in either case. Fitting is made by fitting the base part 18a in the fore end part 16b of a fan case of the centrifugal fan 16. Herein the cross-sectional area of the external shape of a plate of the fore end part of the fan case and those of the internal shapes of plates of the base part 18a and the discharge port part 18 of the exhaust duct 17 are made identical practically and exhaustion in upward, lateral and rearward directions is enabled by replacement of the exhaust duct 17. According to this constitution, it is possible to increase the freedom in the layout of installation and to improve installation adaptability on the occasion when a dryer is installed in a workshop.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal fan, which blows dry hot air from a burner to a grain drying chamber and sucks and discharges the air, thereby forming a discharge port at the end of a discharge duct in a square or rectangular shape. Related to the exhaust fan.

[0002]

2. Description of the Related Art Grains in a grain drying chamber of a grain dryer are sucked by a centrifugal fan provided on a rear machine wall, for example, of hot dry air generated from a burner provided on a front machine wall of the dryer. When the air is exhausted, the air passes through the drying chamber, and is exposed to the hot dry air to be dried. The air exhaust duct of the centrifugal fan that sucks and exhausts air changes from a square shape at the base to a discharge port at the distal end in a circular shape, and is formed into an L-shape. Exhaust air.

[0003]

The air exhaust duct of the centrifugal fan is changed from a square shape to a circular shape in order, and is further formed into an L-shape. The dimension to the discharge port at the tip is long, and therefore, the overall length of the dryer is lengthened, and the adaptability of installing the dryer to a work place has been reduced. The goal is to improve

[0004]

For this purpose, the present invention is directed to a centrifugal fan 16 for sucking and discharging the dry hot air generated from the burner 3 provided on one side of the machine wall 4 to the grain drying chamber 8. In the grain dryer provided on the other side of the machine wall 4, the exhaust duct 17 attached to the tip of the centrifugal fan 16 is
The cross-sectional shape from the base 18a to the discharge port 18 at the tip is formed in a square shape (a) or a rectangular shape (b).

[0005]

The grains in the grain drying chamber 8 of the grain dryer are as follows:
For example, the hot dry air generated from the burner 3 provided on the front machine wall 4 of the dryer is supplied to the centrifugal fan 1 provided on the rear machine wall 4.
In step 6, the air is sucked and exhausted, so that the air is dried by being exposed to the passing dry hot air. The air exhaust duct 17 of the centrifugal fan 16 that sucks and exhausts air flows from the base 18 b to the discharge port 18 at the distal end.
The exhaust duct 17 has a rectangular (a) or rectangular (b) cross-sectional shape and an L-shape.
Air is exhausted from the discharge port 18 at the distal end.

[0006]

The air discharge duct 17 of the centrifugal fan 16 has a square (a) or rectangular (b) cross section from the base 18b to the discharge port 18 at the tip.
The dimension from the mounting portion of the centrifugal fan 16 to the discharge port 18 can be shortened, so that the overall length of the dryer becomes shorter, and the adaptability of the dryer to a work place is improved. In addition, the exhaust position was also exhausted from a low position.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. The figure shows a circulation type grain dryer 1 for drying grains.
1 shows a state in which a moisture sensor 2 for detecting moisture in a grain and a burner 3 for generating hot air are mounted. The dryer 1 is provided with a transfer trough 5 having a transfer spiral rotatably mounted therein and a ceiling plate 6 on the upper portion of the machine wall 4 in a rectangular shape elongated in the front-rear direction. Is formed.

[0008] The grain drying chambers 8, 8 are provided below the storage chamber 7 between the left and right exhaust chambers 9, 9 and the central blowing chamber 10, and below the drying chambers 8, 8, Discharge valves 11 for distributing and flowing down the grains are rotatably supported on respective shafts. The collecting gutter 12 rotatably supports a transfer spiral and is provided below each of the drying chambers 8 and 8 so as to communicate with each other.

The burner 3 is provided inside a burner case 13, and the burner case 13 is detachably attached to the outside of the front machine wall 4 in front of the front machine wall 4 so as to correspond to the inlet side of the blower chamber 10. And an operation device 14 for starting and stopping the dryer 1, the moisture sensor 2, the burner 3 and the like for each of the operations of filling, drying, and discharging, is attached to and detached from the outer surface of the front side machine wall 4. It is provided freely.

The air blower has a configuration using a centrifugal fan 16 that suctions and exhausts air by a centrifugal method. The centrifugal fan 16 is formed on the rear side machine wall 4 at a central rear side of an outer wall plate 17c of a box-shaped exhaust path chamber case 17b forming an exhaust path chamber 17a provided to communicate with the left and right exhaust chambers 9,9. The centrifugal fan 1 is detachably mounted on the centrifugal fan 1 with bolts and nuts.
Reference numeral 6 denotes a rotatable configuration that can change the exhaust air direction. The fan case 16 of the centrifugal fan 16
In a, a fan blade 16e, a bell mouth 63 and the like are provided rotatably inside, and an inlet 16d is provided in an inner wall plate 16c of the fan case 16a. By the rotational driving of the fan blades 16e, the used dry hot air that has passed across the drying chambers 8, 8 is sucked and discharged. The centrifugal fan 16 is configured to be driven to rotate by an exhaust motor 20.

The exhaust duct 17 mounted on the centrifugal fan 16 has a square cross section (a) as shown in FIGS. 1 and 2 from the base 18a to the discharge port 18 at the tip, or As shown in FIGS. 3 and 4, a vertically long rectangular shape (b) is formed, and the external shape is both L-shaped. The base portion 18a is fitted into the fan case 16a tip end portion 16b of the centrifugal fan 16 and mounted. It is a configuration to do. A discharge pipe 19 is fitted into and attached to the outer diameter of the discharge port 18 at the end of the exhaust duct 17, and the suction air sucked by the centrifugal fan 16 passes through the exhaust pipe 19 and is dried. 1 is a configuration in which air is exhausted to the outside of a work place where a drying operation is performed by installing the air conditioner 1. The base of the exhaust pipe 19 attached to the tip of the exhaust duct 17 is connected to the discharge port 18 at the tip of the exhaust duct 17.
The same shape as the part, and the tip part is formed in a circular shape,
It is an extensible structure and is made of a resin sheet material or the like.

As shown in FIG. 1, the cross-sectional area of the outer shape of the plate at the tip 16b of the fan case 16a of the centrifugal fan 16
The cross-sectional area of the internal shape of the plate at the base 18a of the exhaust duct 17 and the discharge port 18 at the tip is substantially the same.
7 is configured such that air can be discharged upward, laterally, and rearward. Thereby, when the dryer 1 was installed in a work place, the freedom of the installation layout was increased, and the installation adaptability was able to be improved.

[0013] As shown in FIG.
The air outlet duct case 17b is attached to the center rear side of the outer wall plate 17c, the discharge port 18 at the tip of the air discharge duct 17 is positioned downward, and the air discharged from the discharge port 18 is positioned lower. It is configured to be located. Thereby, the exhaust pipe 19
Is in the low position, and the exhaust pipe 19 is twisted,
And bending and the like could be prevented.

The valve motor 21 is provided with the delivery valves 11, 1
1 is driven to rotate via a speed reduction mechanism. The fuel pump 22 has a fuel valve and is provided outside the lower plate of the burner case 13. By opening and closing the fuel valve, the fuel pump 22 sucks the fuel in the fuel tank 23 and the burner 3.
To supply. The blower 24 is provided on the outer side of the upper plate, and is driven to rotate at a variable speed by a blower motor 25 for speed change.
It is blown by. The hot air generated from the burner 3 and the outside air passing through the burner case 13 are mixed to form dry hot air.

The diffusion board 26 is provided at the center in the front-rear direction of the bottom plate of the transfer gutter 5 and below the supply port for supplying the transfer kernels to the storage chamber 7, and uniformly diffuses and reduces the kernels to the storage chamber 7. ing.
The grain raising machine 27 is provided on the outer side of the front side machine wall 4 and has a belt with a bucket conveyor 28 stretched inside. The upper end is provided with a discharge tube 29 between the starter of the transfer gutter 5. The lower end portion is provided with a supply gutter 30 between the end portion of the grain collecting gutter 12 and communicates therewith.

The grain raising machine motor 31 is connected to the bucket conveyor 2.
The belt with 8, the transfer spiral in the transfer gutter 5, the diffusion plate 26, the transfer spiral in the grain collecting gutter 12, and the like are driven to rotate. The moisture sensor 2 is provided substantially at the center of the grain raising machine 27 in the vertical direction. The moisture sensor 2 is driven by the transmission of an electrical measurement signal from the operating device 14 to rotate the moisture motor 32 to rotate and drive various parts of the moisture sensor 2. In response to this, the moisture in the crushed grains is detected while crushing and compressing the grains.

The operation device 14 has a box-like shape, and a display section 33 for displaying various items in, for example, a liquid crystal format on a surface plate of the box body. ON with multiple push button methods to set functions
OFF switch function setting means 34a, 34b, 34
c, 34d and a stopping means 35 for stopping the operation are provided. Various functions set by operating these function setting means 34a, 34b, 34c, 34d are displayed on the display unit 33.

These function setting means 34a, 34b, 34c, 34 before the start of each of the work of filling, drying, discharging and ventilation.
As shown in FIG. 7, the function display of d is displayed on the display unit 33 such as intrusion, drying, discharge, and ventilation. Also, grain type,
The function display of these function setting means 34a, 34b, 34c, 34d when setting the drying mode and the like is as shown in FIG.
Is displayed.

The control device 36 is provided in the operating device 14,
A digital input circuit 38 to which the detection input of the paddy flow sensor 37, the input of digital information, the operation of each of the function setting means 34a, 34b, 34c, 34d, and the stop means 35 are input;
Input of analog sensor information, analog input circuit 40 to which detection values detected by moisture sensor 2 and hot air temperature sensor 39 are input, A / D conversion circuit 41, serial data reception circuit 42, and digital to which memory clear 43 is input An input circuit 44, each of these input circuits 38, 40, 41, 42, 4
A microcomputer 45 for performing arithmetic and logical operations and comparison operations on the input from the microcomputer 4 and a memory 46, and a blower motor 2 via an output circuit 47 in response to a command from the microcomputer 45 for control.
0, start and stop control, start and stop control of the valve motor 21 and the grain raising motor 31 through the output circuit 48, and start, stop, and start the fuel valve and the fuel pump 22 through the output circuit 49. It controls and controls the blower motor 25 through the output circuit 50, and controls the start and stop of the moisture motor 32 through the output circuit 51. The display unit 52 displays various items on the display unit 33. The display is controlled, and the serial data transmission circuit 53, the nonvolatile memory 54, and the like are provided.

As shown in FIG. 11, an intake port 17e is provided at the center of the outer wall plate 17c of the exhaust path chamber case 17b in the left, right, up and down directions, and an axial fan as an exhaust fan is provided outside the intake port 17e. When the fan 55 is used, a plurality of mounting holes 56 for mounting the axial fan 55 are provided.
6, the axial fan 55 is mounted on the outer wall plate 17c of the exhaust path chamber case 17b with bolts, nuts and the like.

Further, in order to enable both the centrifugal fan 16 and the axial fan 55 to be mounted on the exhaust path chamber case 17b, as shown in FIGS. , A U-shaped intermediate mounting frame 57 is provided, and the intermediate mounting frame 57 is provided with an intake port 58, and the upper and lower bent portions 60 are provided with L-shaped mounting notches 6 in plan view.
1, 61, and the mounting notches 61, 61 are bolted to the upper and lower wall plates 17d, 17d of the exhaust path chamber case 17b.
And a nut or the like.

The centrifugal fan 16 is provided with a rotating plate 62 formed in two stages of large and small circular shapes, a plurality of mounting holes 62a provided in the small circular portion, and an outer peripheral portion of the large circular portion. Has a plurality of notches 62b. In addition, a bell mouth 63 having a conical tip cut off is provided. A plurality of mounting holes 63 b are provided in a bent portion 63 a of the bell mouth 63 base. The fan blades 16e are rotatably mounted.

The fan case 16a includes a bell mouth 6
3 is attached to the mounting hole 62a of the rotating plate 62 with a bolt and a nut via the mounting hole 63b of the fan blade 16
e, and a bell mouth 63 are housed in the fan case 16a. When the centrifugal fan 16 is rotated, the fan is inserted into the cutout portion 62b of the rotating plate 62 and bolts or the like are used. The centrifugal fan 1 is removed by removing the L-shaped stopper 64 inserted into the upper wall plate 17d of the intermediate mounting frame 57 and inserted into the insertion hole 57a of the intermediate mounting frame 57.
6, the stopper 64 can be inserted into a predetermined position, and the exhaust direction can be changed to an arbitrary position.

Thus, any one of the centrifugal fan 16 and the axial fan 55 can be attached to one dryer 1 as a blower.

[Brief description of the drawings]

FIG. 1 is an enlarged rear view of a main part.

FIG. 2 is an enlarged side view of a main part.

FIG. 3 is an enlarged rear view of a main part.

FIG. 4 is an enlarged side view of a main part.

FIG. 5 is an overall side view of a grain dryer partially sectioned.

FIG. 6 is an enlarged sectional view taken along line AA of FIG. 5;

FIG. 7 is an enlarged front view of the operating device that can be partially broken;

FIG. 8 is an enlarged front view of an operation device for partially breaking the operation device.

FIG. 9 is a block diagram.

FIG. 10 is a view showing another embodiment, and is an entire side view showing a grain dryer partially in section;

FIG. 11 is a view showing another embodiment, and is an enlarged side view of an axial flow fan mounting portion which can be partially broken.

FIG. 12 is a view showing another embodiment, and is an enlarged side sectional view of a centrifugal fan mounting portion which can be partially broken.

FIG. 13 is a view showing another embodiment, and is an enlarged plan view of an intermediate mounting frame that can be partially broken, and an exhaust path chamber case.

FIG. 14 is a view showing another embodiment, and is an enlarged side perspective view of a centrifugal fan unit.

[Explanation of symbols]

 3 Burner 4 Machine wall 8 Kernel drying room 16 Centrifugal fan 17 Air exhaust duct 18 Discharge port 18a Base

Claims (1)

[Claims] 1. A centrifugal fan (16) provided on the other side of the machine wall (4) for supplying hot dry air generated from a burner (3) provided on one side of the machine wall (4) to the grain drying chamber (8) for suction and exhaust. In the granule dryer, the exhaust duct 17 attached to the distal end of the centrifugal fan 16 has a rectangular (b) or rectangular (b) cross-sectional shape from the base 18a to the discharge port 18 at the distal end. The exhaust of the grain dryer.