JPS6118388Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement of a dust removal device in a cylindrical grain ventilation drying device in which the grain vat (or drying chamber) into which grains to be dried are filled is formed into a polygonal or cylindrical shape. It is.

In the case of the above-mentioned cylindrical grain ventilation drying device, as described in, for example, Japanese Utility Model Publication No. 56-29665, the drying air drying device that has been sent to the grain layer is collected and dried in the grain tank. The exhaust pipe installed to guide the air to the upper part of the grain tank is provided only for that purpose, and a separate suction exhaust pipe is used to remove dust and straw floating in the grain tank. A dust machine had to be installed.

The present invention was devised to effectively utilize the exhaust air from the exhaust pipe located in the center of the grain tank and to remove straw debris in the grain from the circulation path. , using the exhaust air from the exhaust pipe,
A new method has been developed to separate and remove coarse waste such as straw that is mixed into the grain and interferes with the transportation of the grain to circulate and flow the grain. The purpose is to provide.

In the present invention, as a means to achieve this objective, the grain is fed from below the floor plate of the grain tank to the internal axis of the grain tank formed in a cylindrical shape, and is deposited on the floor board. An exhaust pipe is installed to collect the exhaust air of drying wind blowing up into the grain layer and guide it to the upper part of the inner cavity of the grain tank. A dust removal device for a cylindrical grain ventilation drying device, characterized in that the exhaust air is opened in a direction in which a vortex flow is formed around the exhaust pipe, and dust exhaust ports are installed at appropriate locations on the peripheral wall of the grain tank. This is to raise the following.

Next, an example of implementation will be specifically explained according to the drawings. In FIG. 1, 1 is formed into a cylindrical shape and the base 2 is
This is a grain tank that can be constructed on top of the grain tank, and a floor plate 3 formed to be breathable is installed in the inner cavity at a position slightly elevated from the floor surface of the base 2, and the upper surface of the floor plate 3 is placed on a shelf. It is designed to be a substantial grain tank, and the lower surface side of the floor plate 3 is formed into an air guide path 5 that guides drying air sent by a blower device 4 to the grain layer G deposited on the upper surface of the floor plate 3. It has been done.

6 is a grain tank 1 for loading grains into the grain tank 1.
This is a grain lifting machine consisting of a known bucket elevator installed adjacent to a conveyor 8, and an exhaust duct is installed at the top of the roof of the grain tank 1, with the terminal end of the conveyor 8 communicating with the discharge cylinder 7 at the top. It is communicated with the inner cavity of the grain tank 1 by projecting into the top of the inner cavity of the grain tank 1 through the hole 9.

10 is used to circulate and flow the grains loaded into the grain tank 1 by the grain lifting machine 6 during the drying process, and to take them out of the machine when drying is completed; This is an auger for discharging grains disposed on the upper surface of the floor plate 3, and is rotatably supported by a gear case 12 supported by a vertical shaft 11 at the central axis of the floor plate 3, and the vertical shaft 11 of the gear case 12 It revolves around the rotation of the center.

13 is arranged in the air guide path 5 below the floor plate 3 so as to convey the grains that the auger 10 has conveyed toward the outlet 14 provided at the axial center of the floor plate 3 to the outside of the grain tank 1. This is a conveyor for carrying out that is installed in a horizontal position, and the terminal end in the conveying direction is communicated with the lower end of the grain lifting machine 1 described above.

Reference numeral 20 denotes an exhaust pipe that is installed upright at the axial center of the inner cavity of the grain tank 1, and is formed so as to rise higher than the stacking height of grains that are normally placed in the grain tank 1. ... is suspended in the grain tank 1, and the drying wind blown up from below the floorboard 3 at the part of its trunk wall 22 that is buried in the grain layer G stretched into the grain tank 1. At the height you reach,
Air guide rods 30 having a chevron-shaped cross section and open at the bottom are provided radially protruding, and the inner cavity of the air guide rods 30 is connected to the exhaust pipe 20.
As shown by the arrow W in FIG. are collected in the exhaust pipe 20, and the exhaust pipe 20
The air is discharged into the space above the grain layer from the exhaust port 23 formed at the upper end projecting above the grain layer.
It is the same as the previous exhaust pipe in that the air is discharged from the machine to outside the machine, but the above-mentioned exhaust port 23 formed at the top of the exhaust pipe 20 is
As shown in the figure and FIG.
The exhaust air blown from the grain tank 1 reaches the top of the inner cavity of the grain tank 1.
In order to generate a vortex Y centered on the exhaust pipe 20, the opening is made along a vertical plane, and the opening surface is arranged in a plane and substantially perpendicular to the outer surface of the body peripheral wall 22 of the exhaust pipe 20. It has been done. 40 is a dust outlet installed in the upper part of the peripheral wall 1a of the grain tank 1, and is provided with a notched hole at a height above the upper surface of the grain layer deposited in the grain tank 1. A window hole 41 is made, and a funnel wall 42 that slopes upward and projects into the grain tank 1 is provided at the lower edge of the window hole 41.
A guide wall 43 that protrudes outward from the grain tank 1 and bends downward is provided on the upper edge of the grain tank 1 in the form of a cover, and below the guide wall 43, a dust receiving case 44 with a bottom plate 44a that can be opened and closed is installed. Although the dust receiving case 44 and the funnel wall 42 may be omitted, they may be formed as appropriate.

The embodiment device constructed as described above operates as follows.

Dry air (exhaust air) that is fed from below the floorboard 3, passes through the grain layer G, and is collected in the exhaust pipe 20 as exhaust by the air guide bars 30...
3 into the upper space of the inner cavity of the grain tank 1, a vortex Y around the exhaust pipe 20 is generated in the upper space of the inner cavity of the grain tank 1. The grains fried by the grain lifting machine 6 and thrown into the grain tank 1 are thrown into the vortex Y of the exhaust gas. Therefore, the straw and dust mixed in the grains rotate in the inner cavity of the grain tank 1 riding on the vortex Y of the exhaust air, and the centrifugal force caused by the rotation moves the large debris that is shaken out from the surrounding wall. The liquid is discharged to the outside of the machine from the discharge port 40 opened at the top of 1a.

As explained above, the dust removal device in the cylindrical grain ventilation drying device according to the present invention is supplied from below the floorboard of the grain tank to the axial center of the inner cavity of the grain tank formed in a cylindrical shape. An exhaust pipe is installed to collect the exhaust air of the dry wind blowing up to the grain layer deposited on the floorboard and guide it to the upper part of the inner cavity of the grain tank. The exhaust air blown out from the exhaust port opens in the direction of a vortex flow centered on the exhaust pipe, and the grain tank is configured with dust exhaust ports installed at appropriate locations on the peripheral wall of the grain tank. The dry air discharged from the exhaust pipe installed in the center becomes a swirling flow centered on the exhaust pipe, and the straw and dust floating in the grain tank are moved around the grain tank. Since the grains are transported and discharged outside the machine from the outlet on the peripheral wall, there is no need to install a special suction dust remover, and the straw waste that is mixed in with the grains and gets in the way when the grains are transported can be removed. Separation and removal can be effectively performed by exhausting air from the exhaust pipe.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of an embodiment of the device of the present invention;
The figure is a cross-sectional view taken along the line A--A in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line B--B in FIG. 1. Explanation of drawing symbols: 1... Grain tank, 1a... Peripheral wall as above, 3... Floor board, 20... Exhaust pipe, 23... Air exhaust port, 40... Dust outlet.

Claims (1)

[Scope of utility model registration request] At the inner axial center of the grain tank, which is formed into a cylindrical shape,
An exhaust pipe is provided to collect the exhaust air from the dry wind that is sent from below the floorboard of the grain tank and blow up onto the grain layer deposited on the floorboard and guide it to the upper part of the inner cavity of the grain tank. The exhaust port formed at the top of the wind pipe is opened in the direction in which the exhaust air blown out from the exhaust port forms a vortex flow centered on the exhaust pipe, and dust exhaust ports are installed at appropriate locations on the peripheral wall of the grain tank. A dust removal device in a cylindrical grain ventilation drying device characterized by a dust removal device.