JPH0629617U - Grain dust treatment equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] A grain dust processing device that can reduce the pressure loss due to the net installed in the dust collection chamber. [Structure] Dust-containing air is sent from the duct 1 to the dust collecting chamber 1a, passes through the net 4, and is discharged to the outside of the main body box 1. At that time, dust is collected by water droplets dropped from the net 4. In the grain dust processing apparatus adapted to be dusty, the net 4 has a chevron shape. Therefore, net 4
Area becomes large, air easily passes through the net 4, and due to the cleaning action of the water flowing down the net 4,
The clogging of the net 4 can be eliminated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 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]

[Prior art]

 The present applicant has previously proposed a treatment device for grain dust generated in agricultural facilities, grain treatment devices, etc. (Japanese Utility Model Publication No. 2-1216). In this device, dust is sent to the dust collection chamber through a duct, water is impregnated by the water sprinkler installed above and dropped onto a sloping plate, and the water-containing dust flowing down the sloping plate is filtered by a screen. It is then collected in the collection section.

[0003]

[Problems to be solved by the device]

 In this dust treatment device, the dust-containing air is pressure-fed from the duct to below the net of the dust collection chamber by the fan, and the air pressure-fed to the dust collection chamber passes through the net as an updraft. It is designed to flow out from the eliminator on the ceiling of the main unit box. 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 collecting chamber. There is a problem that the dust collection efficiency decreases. Moreover, since the net is easily clogged with dust, the pressure loss becomes larger and the dust collection efficiency is likely to decrease significantly.

Of course, if the air volume of the fan for sending the dust-containing air to the dust collecting chamber is increased or the main body box is increased, such a problem can be remedied considerably. However, if this is done, a new problem arises in that the device becomes large and the cost increases. Therefore, an object of the present invention is to provide a grain dust processing apparatus capable of reducing pressure loss of an air flow by a simple means and efficiently collecting dust.

[0005]

[Means for Solving the Problems]

 Therefore, in the present invention, the area of the net 4 arranged in the dust collecting chamber 1a is increased by forming the net 4 into a mountain shape.

[0006]

[Action]

 In the above structure, the dust sent into the dust collecting chamber 1a comes into contact with water drops or mist drops dripping from the net 4, falls on the inclined plates 6a, 6b by gravity, and flows down on the inclined plates 6a, 6b. , Reaches the opening 16, is filtered by the screen 20, and is collected in the collection unit 15. The air from which the dust has been removed becomes an updraft, passes through the net 4, is separated into air 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 due to the net 4 is small, and the air can smoothly pass through the net 4, so that the dust collection efficiency can be avoided. Moreover, 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. Reference numeral 1 denotes a box-shaped main body box, an upper part of which is a dust collecting chamber 1a, and an eliminator 2 for separating air 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. ing. 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 disposed at the bottom of the dust collecting chamber 1a, which are obliquely installed at a downward slope toward the central portion and have an opening 16 at the lower end thereof. Has been secured. Reference numeral 8 denotes a rotating body disposed below the opening 16, which has a plurality of flexible vane plates 8a to 8d (four in this embodiment), and a motor (see FIG. It is driven by (outside) and rotates slowly at low speed. The rotating body 8 is arranged in close contact with the opening 16 so as to close the opening 16.

A screen 20 for filtration is arranged along the lower side of the rotating body 8 along the rotating body 8, and a water tank portion 21 is provided below the screen 20. The water tank portion 21 is partitioned by partition plates 22 and 23 into a first water tank 24, a second water tank 25, and a third water tank 26, and the water is submerged and overflowed while dust is allowed to settle and purified. The purified water is sucked up by the pump 9 provided in the third water tank 26 and is returned to the water discharge means 3 through the pipe 10. 27 is a water supply pipe to the water tank 21. Below the other end of the lower side of the rotating body 8, a collecting unit 15 composed of a bucket is arranged. Reference numeral 12 is an arc-shaped partition plate arranged on the upper side of the rotating body 8 along the same, 13 is an opening for taking in and out of the collecting portion 15, 11 is a drain gutter, and 14 is a drain pipe.

2 and 3 are a cross-sectional view and a perspective view of a main part. 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 angle of inclination of the net 4 is 45 °, and therefore the area thereof is about √2 times the area of the horizontal net described in the above-mentioned 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 ports 3a are opened on the lower surface thereof at a number of intervals. 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, falls on the net 4, and flows 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 and slowly flows down the water collecting gutter 33 to incline the above from the tip thereof. It falls on the plate 6a (see the arrow (a) in FIG. 1). This device is constructed as described above, and its operation will be described below.

The dust sent from the duct 5 into the dust collecting chamber 1 a becomes an upward airflow, passes through the net 4, 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 overflows the uneven portion 32 and drops onto the net 4. The water dropped on the net 4 flows down on the net 4 toward the water collecting gutter 33, but a part of the water drops as water drops from the net 4. Dust in the dust-containing air sent from the duct 5 below the net 4 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 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. Moisture 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 when 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 ascending airflow, passes through the net 4, and flows out of the main body box 1 from the eliminator 2. Since it is bent in a chevron shape to increase its 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 dust-containing air is smoothly discharged from the duct 5. Can be sent.

Further, dust is easily attached to the mesh of the net 4 to easily cause a pressure loss, but the water dropped from the gutter 31 travels along the net 4 toward the water collecting gutter 33. Since the water flows down, the net 4 is constantly washed by this 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 it. The sprinkling means 3a 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]

[Effect of device]

 As described above, according to the present invention, since the net 4 arranged in the dust collecting chamber 1a is formed in a chevron shape to increase the area thereof, the pressure loss due to the net 4 is small, and the duct 5 to the dust collecting chamber is reduced. The dust-containing air can be smoothly fed into the la 1a, and the reduction of the dust collection efficiency due to the net 4 can be avoided. Moreover, since the water supplied from the water discharge means 3 flows down on the net 4, the cleaning action does not cause the net 4 to be clogged, and the deterioration of the 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 collecting chamber 1a provided at an upper portion of a main body box 1 is vertically divided by a net 4, a 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 arranged above the water discharge means 3, and downwardly inclined sloped plates 6a and 6b are obliquely provided at the bottom of the dust collecting chamber 1a. The opening 16 is secured, a filtration screen 20 is provided in the opening 16, and a grain dust collecting portion 15 and a water tank portion 21 filtered by the screen 20 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.