JPH0721212Y2 - Grain dust treatment equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain dust processing apparatus, and more particularly to a grain dust processing apparatus capable of efficiently collecting dust by preventing dust-containing air from leaking to the outside.

[0002]

2. Description of the Related Art The applicant of the present invention has previously proposed a device for treating grain dust generated in agricultural facilities, grain treatment devices, etc. (Japanese Utility Model Publication No. 2-1216). This device sends dust to the dust collection chamber through a duct, causes the water to be impregnated by the water sprinkler installed above and drops it on the inclined plate, and the impregnated water that has flowed down the inclined plate is filtered by a screen. It is then collected in the collection section.

[0003]

[Problems to be Solved by the Invention]
Dust-containing air is sent from the duct below the net in the dust collection chamber by a fan.The air that is sent to the dust collection chamber ascends and passes through the net, from the eliminator on the ceiling of the main box. It is designed to be leaked to the outside. However, since the area of the net is not so large, the pressure loss of the air flow when passing through the net is large, and as a result, the lower part of the net becomes extremely high pressure, and it becomes difficult to send the dust-containing air from the duct to the dust collection chamber. There is a problem that the dust efficiency decreases. Moreover, since the net is likely to be clogged with dust, the pressure loss is further increased, and the dust collection efficiency is likely to be significantly reduced.

Of course, such a problem can be remedied considerably by increasing the air volume of the fan for sending the dust-containing air into the dust collecting chamber or by enlarging the body box. However, this causes a new problem that the device becomes large and the cost increases. Therefore, the present invention reduces the pressure loss of the air flow by simple means,
An object of the present invention is to provide a grain dust processing device that can efficiently collect dust.

[0005]

To this end, the present invention is to increase the area of the net 4 arranged in the dust collecting chamber 1a by forming it into a mountain shape.

[0006]

In the above structure, the dust sent to the dust collecting chamber 1a comes into contact with water drops or mist drops dripping from the net 4, and falls on the inclined plates 6a, 6b by gravity and then on the inclined plates 6a, 6b. Flow down, reach the opening 16, are filtered by the screen 20, and are collected in the collecting unit 15. Further, the air from which dust has been removed becomes an upward airflow, passes through the net 4, is separated into water and water by the eliminator 2, and is discharged to the outside of the main body box 1. However, since the net 4 has a chevron shape, its area is large, Therefore, the pressure loss of the air flow by the net 4 is small, and the air can smoothly pass through the net 4, so that the dust collection efficiency is avoided. Further, the clogging of the net 4 can be eliminated by the washing action of the water flowing down the net 4.

[0007]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing the inside of the grain dust processing apparatus. 1 is a box-shaped main body box, the upper part of which is a dust collection chamber 1a, and an eliminator 2 for separating water and water is arranged on the ceiling. Reference numeral 4 denotes a net arranged substantially in the center of the dust collecting chamber 1a. The dust collecting chamber 1a is vertically divided by the net 4, and a water discharge means 3 is arranged above the net 4. There is. Further, a duct 5 communicating with a dust generating portion such as a grain drying chamber is connected to a wall portion below the net 4, and the grain dust is sent into the dust collecting chamber 1a through the duct 5.

Reference numerals 6a and 6b denote a pair of inclined plates arranged at the bottom of the dust collecting chamber 1a, which are obliquely installed at a downward slope toward the central portion, and an opening 16 is provided at the lower end thereof. Is secured. Reference numeral 8 denotes a rotating body disposed below the opening 16 and includes a plurality of flexible members (4 in this embodiment).
Motor blade (not shown).
It is driven by and rotates slowly at low speed. This rotating body 8
Are arranged in close contact with the opening 16 so as to close the opening 16.

On one lower side portion of the rotating body 8, the rotating body 8
A screen 20 for filtration is provided along the screen, and a water tank portion 21 is provided below the screen 20. The water tank portion 21 has a first partition plate 22 and a second partition plate 23.
It is divided into a water tank 24, a second water tank 25, and a third water tank 26, and the dust is sedimented and purified while the water is submerged or overflowed. The purified water is sucked up by the pump 9 arranged in the third water tank 26 and passed through the pipe 10 to the water discharge means 3
Reflux to. 27 is a water supply pipe to the water tank portion 21.
Below the other end of the lower side of the rotating body 8, a collecting unit 15 including a bucket is arranged. Reference numeral 12 is an arcuate partition plate arranged on the upper side of the rotating body 8 along the same, 13 is an opening / closing opening of the collecting portion 15, 11 is a drainage gutter, and 14 is a drainage pipe.

2 and 3 are a sectional view and a perspective view of a main portion. The net 4 is bent in a chevron shape, and the water discharge means 3 is provided above the top of the net 4. In this embodiment, the net 4 has an inclination angle of 45 °, and therefore its area is about √2 times the area of the horizontal net described in Japanese Utility Model Laid-Open No. 2-1216. Of course, the inclination angle is not limited to 45 °, but 45 ° is advantageous.

The water discharge means 3 is a pipe, which is connected to the pipe 10 and is arranged with its longitudinal direction along the top of the net 4. Discharge port 3 on the lower surface
a is opened at several places with a pitch. A gutter 31 is provided between the water discharger 3 and the net 4. The upper surface of the side wall of the gutter 31 has a concavo-convex portion 32 having a continuous chevron shape. Therefore, the water discharged from the discharge port 3a falls into the gutter 31, overflows the uneven portion 32, and falls onto the net 4,
Run down along the net 4. A water collecting gutter 33 is arranged in the lower part of the net 4, and the water flowing down on the net 4 enters the water collecting gutter 33, slowly flows down the water collecting gutter 33, and from the tip end thereof to the inclined plate. 6a (see the arrow (a) in FIG. 1). This device consists of the above configuration,
Next, the operation will be described.

The dust sent from the duct 5 into the dust collecting chamber 1a passes through the net 4 as an ascending airflow, and is discharged from the eliminator 2 to the outside of the main body box 1. Water is discharged from the discharge port 3a of the water discharge means 3, and this water falls into the gutter 31 and flows over the uneven portion 32 to fall onto the net 4. The water dropped on the net 4 flows down on the net 4 toward the water collecting trough 33, but a part of the water drops as water droplets from the net 4. Dust in the dust-containing air sent below the net 4 from the duct 5 comes into contact with the water droplets, becomes water-containing dust and falls on the inclined plates 6a, 6b by gravity and flows down on the inclined plates 6a, 6b. Then, the opening 16 is reached. The air from which the dust has been removed passes through the net 4, is separated into water and water by the eliminator 2, and is discharged to the outside of the box 1.

The rotating body 8 is slowly rotating at a low speed in the opening 16 and the water-containing dust reaching the opening 16 is scraped out by the blades 8a to 8d. The water content is filtered by the screen 20 and falls into the lower water tank portion 21, and the purified water is returned to the water discharge means 3 through the pipe 10. Further, the dust dusted off by the screen 20 is collected by the collecting unit 15 as the rotating body 8 further rotates.

As described above, the air sent from the duct 5 to the lower side of the net 4 becomes an upward airflow, passes through the net 4, and flows out from the eliminator 2 to the outside of the main body box 1. Since the shape is bent to increase the area, the pressure loss due to the net 4 is so small that the air pressure in the space below the net 4 does not become abnormally high, and the dust-containing air is smoothly fed from the duct 5. be able to.

Further, dust adheres to the mesh of the net 4 and is easily clogged to cause pressure loss.
Since the water dropped from 1 flows down along the net 4 toward the water collecting gutter 33, the net 4 is constantly washed by the flowing water, and clogging can be prevented.

[0016]

Second Embodiment FIG. 4 shows another embodiment of the present invention.
The net 4a is formed in a continuous mountain shape, and the sprinkling means 3a is provided above the net 4a. This sprinkling means 3a is
It is the same as that described in Japanese Utility Model Laid-Open No. 2-1216, and sprays water in a shower shape. Also in this case, since the net 4 has a chevron shape, its area is large, and the same effect as that of the first embodiment can be obtained.

[0017]

[Effects of the Invention] As described above, the present invention has the dust collecting chamber 1
Since the net 4 disposed in a is formed in a mountain shape to increase its area, the pressure loss due to the net 4 is small, and the dust-containing air can be smoothly sent from the duct 5 to the dust collecting chamber 1a. It is possible to avoid a decrease in dust collection efficiency due to the net 4. Moreover, since the water supplied from the water discharge means 3 flows down on the net 4, its cleaning action causes the net 4 to flow.
Is not clogged, and the decrease in dust collection efficiency due to the clogging of the net 4 can be eliminated.

[Brief description of drawings]

FIG. 1 is a sectional view of a grain dust processing apparatus according to an embodiment of the present invention.

FIG. 2 is a partial sectional view of a grain dust processing apparatus according to an embodiment of the present invention.

FIG. 3 is a perspective view of an essential part of a grain dust processing apparatus according to an embodiment of the present invention.

FIG. 4 is a partial sectional view of a grain dust processing apparatus according to another embodiment of the present invention.

[Explanation of symbols]

 1 Body Box 1a Dust Collection Chamber 2 Eliminator 3 Water Discharging Means 4 Net 5 Ducts 6a, 6b Inclined Plate 9 Pump 10 Pipe 15 Recovery Section 16 Opening 20 Screen 21 Water Tank Section

Claims (1)

[Scope of utility model registration request] 1. A dust collection chamber 1a provided in an upper portion of a main body box 1 is vertically divided by a net 4, water discharge means 3 is provided above the net 4, and grain dust is sent below the net 4. The duct 5 is connected, the eliminator 2 is provided above the water discharge means 3, and downwardly inclined slope plates 6a and 6b are obliquely provided at the bottom of the dust collecting chamber 1a. The opening 16 is secured, a filtering screen 20 is provided in the opening 16, and a grain dust collecting portion 15 filtered by the screen 20 and a water tank portion 21 are provided below the screen 20. In the grain dust processing apparatus in which the portion 21 and the water discharge means 3 are connected by the pipe 10 and the purified water in the water tank portion 21 is circulated by the pump 9, the net 4 is piled up. A grain dust processing device characterized in that its area is enlarged by making it a shape.