JP2832431B2 - Dust removal method in non-circulating, cumulative stirring and mixing type vertical cylindrical grain storage and drying equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing dust in a grain drying apparatus in which grains to be dried are charged into a grain tank and drying air is supplied thereto to dry the grains.

[0002] More specifically, a grain tank (bottle) into which grains to be dried are loaded is formed in a vertical cylindrical shape whose vertical direction is the axial direction, and its floor plate is made air-permeable. The bottom of the floorboard is formed as an air duct, so that the supply of dry air to the grains loaded in the grain tank is transmitted vertically through the layer of grains deposited on the floorboard. In the grain drying apparatus in the form to be carried out in the form, the inside of the grain tank is equipped with a vertical auger for vertically stirring and mixing the grains piled up and deposited is a non-circulating In the operation of drying grains by a vertical cylindrical grain storage and drying device of a cumulative stirring and mixing system, the grains are generated in the grain tank when the grains are put into the grain tank, and are discharged to the outside together with exhaust gas. The present invention relates to an improvement in means for removing dust.

[0003]

2. Description of the Related Art A vertical cylindrical grain storage and drying apparatus of the above-mentioned type is disclosed in JP-B-63-37874.
It is configured as in the publication. That is, as shown in FIG. 1, a foundation 1 is laid by placing concrete in an appropriate place outdoors adjacent to a building H such as a grain processing facility or a barn, and an axis is vertically set on the foundation 1. A vertical cylindrical bottle body 2 having an orientation is constructed, and the bottom of the lumen of the bottle body 2 is located at a position slightly elevated from the upper surface of the foundation 1.
An air-permeable floor plate 20 having countless through holes such as a perforated plate or a mesh body is provided on a shelf, and the bin body 2 above the floor plate 20 is provided.
Is a grain tank a into which grains to be dried are put. In the center of the floor plate 20, a discharge port 21 for discharging the grains inserted into the grain tank a is opened, and the discharge port 21 is provided.
Is disposed in a space formed between the floor plate 20 and the upper surface of the foundation 1, and communicates with the outside of the bin body 2 via a discharge conveyor 22 whose end side projects outside the bin body 2. In addition, on the upper surface of the floor plate 20, a discharge auger 3 for rotating and rotating around the discharge port 21 and conveying the grains on the floor plate 20 toward the discharge port 21 is provided. A supporting frame 40 that revolves around the axis of the bottle body 2 is mounted on the ceiling of the bore of the vessel a, and a vertical auger 41 for stirring and mixing the grains in the vertical direction. …
Are supported so as to rotate while reciprocating along the longitudinal direction of the supporting machine frame 40, and the lower ends of the vertical augers 41 revolve around the discharge auger 3 described above. It is set to the hanging length located above the trajectory.

[0004] Further, on the upper part of the bin main body 2, the end side in the conveying direction of the conveyor 5 for embedding grain is attached to the bin main body 2.
The air outlet of the pressure blower 6 for passing dry air through the roof 23 surrounding the upper surface of the bin and communicating with the inner space of the grain tank a and the wind guide path b formed by the space under the floor plate 20 of the bin body 2. 6
0, which is connected to the conveyor 5 for grain filling.
In the state where a predetermined amount of grains are spread in the grain tank a, the vertical augers 41 are operated to stir and mix the grains.
As shown by a double-line arrow in FIG. 1, the drying air is pressure-fed to the air guide path b by the pressure blowing blower 6, and the drying air passes through the grain layer and is exhausted at the top of the bottle main body 2 through the exhaust port 24. It is configured such that the grains stuck in the grain tank a are dried by being discharged from the outside.

However, the above-mentioned JP-B-63-3787
The means disclosed in Japanese Patent Application Publication No. 4 (1999) -1995 discloses that, when a grain drying operation is performed using the grain storage / drying device configured as described above, the grain initially loaded into the grain basin a is the full volume of the grain basin a. First, the grain is dried, and when the grain has dried to a certain extent, undried grains are added so as to be added. Proceed with the drying process while stirring and mixing with the grains whose drying is in progress.Additionally, successively adding undried grains so that the drying process proceeds, and perform the cumulative stirring. This is a means for drying the undried grains while storing the dried grains in the grain tank a by performing drying.

[0006]

In the grain storage and drying apparatus constructed as described above, one fifth of the total volume of the grain tank a is filled into the grain tank a and the grain is dried. Time drying process, and for the next 5 days, 1/5 every 24 hours
As shown in Fig. 2, when additional grains are added one after another and the drying operation is performed, the drying rate slightly decreases, but the drying capacity is reduced by drying the first one-fifth. The advantage is that the ability to dry the whole grain is maintained, while keeping it almost unchanged from its ability to do so.

However, the action of the vertical augers 41 for stirring and mixing the grains sequentially loaded in the grain tank a is limited to the area W above the lower end of the vertical augers 41, and Auger 3 below the lower end of the auger 41.
Area Y just above the floor plate 20 within the range of the rotation locus of
Therefore, the area Y is a non-stirring area where the stirring and mixing of the grains are not performed, and the grains that are immovably deposited in the area Y are indicated by a dashed line in FIG. As shown in (1), there is a problem that it is excessively dried to a remarkably low moisture value, and that the whole is uniformly dried to a predetermined moisture value.

Further, while drying the grains stuck in the grain tank a, the undried grains are successively added so as to be added and accumulated, and then blown up from the lower surface of the floor plate 20 of the grain tank a. Since the drying is promoted by the drying air, every time the grains are put into the grain tank a so that the undried grains are added,
The dust mixed in the grain rises into the grain tank a and becomes full, so that the exhaust discharged to the outside from the exhaust port 24 contains a large amount of dust, and is discharged together with the exhaust. There is a problem that processing of a large amount of dust is troublesome.

The present invention has been made to solve this problem which has occurred in the conventional means. The present invention is directed to a discharge auger 3 disposed on a floor plate 20 below the lower end of a vertical auger 41. Since the grains in the area Y just above the floor plate 20 located in the orbit of the orbital rotation are kept in the stationary state during the drying process, the grains in the area Y are effectively removed. By using the new method, a large amount of dust that rises and fills the grain tank a every time the grains are added to the grain tank a so as to be added thereto can be removed from the exhaust gas. It is intended to provide a means.

[0010]

According to the present invention, as a means for achieving the above-mentioned object, a central portion is provided on the bottom side of the inner cavity of the cylindrical bottle main body 2 whose axial direction is the vertical direction. Shelving a permeable floorboard 20 having an outlet 21,
A grain basin a into which grains are inserted is formed above the floor plate 20 and an air guide path b is formed below the floor plate 20, and the grain basin a
A vertical auger 41 for vertically stirring and flowing the stuffed grains is arranged in the vertical auger 4.
1 and the upper surface of the floor plate 20, the outlet 21
At the center, a discharge auger 3 for rotating and revolving along the upper surface of the floor plate 20 and transferring the grains toward the discharge port 21 is provided, and dry air is supplied to the upper part of the inner cavity of the bottle body 2. The suction port 70 of the suction blower 7 is connected to the air guide path b below the floor plate 20, and the grains are sequentially added and accumulated in the grain tank a, Vertical auger 41 ...
The dry air blown from the blowing port c at the upper part of the inner cavity of the bottle main body 2 flows from above the grain layer in the grain tank a toward the wind guide path b below the floor plate 20 while stirring and mixing up and down. A non-circulating / cumulative stirring / mixing type vertical cylinder characterized in that dust generated in the grain basin (a) at the time of feeding the grains is removed from the exhaust air by drying the grains. The present invention proposes a method of removing dust in a grain storage and drying apparatus.

[0011]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 3 is a partially cutaway front view of a vertical cylindrical grain storage and drying apparatus A for carrying out the present invention, wherein H is a building of a grain processing facility such as a rice center, and 1 is its building. A foundation laid by pouring concrete at a position close to the building H, a vertical cylindrical bottle body 2 formed into a cylindrical or polygonal cylindrical shape and constructed on the foundation 1, and a breathable 20 is formed. A floor plate shelved at the bottom of the bin body 2, a discharge opening 21 formed at the center of the floor plate 20, a start end 22 in the transport direction connected to the discharge opening 21, and a termination end protruding outside the bin main body 2. The discharge conveyor 23 is a roof that surrounds the upper part of the bin body 2, and 3 is a revolving orbiting centered on a transmission case 30 that arranges the upper surface of the floor plate 20 at the center of the discharge port 21 and supports the bin body 2. Floor plate 20
The discharge auger 40 is provided so as to dredge the grains on the upper surface toward the discharge port 21. The discharge auger 40 revolves around a transmission case 42 supported on an axial portion of the ceiling portion of the lumen of the bottle body 2. The supporting machine frame 41, which is bridged between the conductive machine housing 42 and an annular rail 43 provided on the upper inner surface of the machine wall 2a of the bin body 2, reciprocates on the supporting machine frame 40 in the longitudinal direction thereof. A vertical auger that can be mounted to rotate while rotating
Reference numeral 5 denotes a conveyer for penetration in which the end side in the transport direction passes through the top of the roof 23 of the bin main body 2 and communicates with the lumen of the bin main body 2. A grain tank formed by the upper space, b is an air guide path formed by the space below the floor plate 20 at the bottom of the lumen of the bottle main body 2, and these are the conventional vertical channel shown in FIG. It is the same as that of the grain storage and drying unit with a cylindrical shape.

However, the suction port 70 of the suction blower 7 provided outside the bottle body 2 is provided in the air guide path b below the floor plate 20.
Are in communication. The top of the roof 23 of the bottle body 2 is connected to the tip end of a blower tube 80 connected to the blowout port of the blower 8 provided outside the bottle body 2, and the suction port of the blower 8 is dehumidified. The hot air discharge port of the air blower 81 or the burner device (not shown) is connected, so that the drying air adjusted by the dehumidifier 81 or the burner device can be used as the air outlet c with the opening at the tip end of the blower tube 80 as the blower outlet c. It can be supplied to the ceiling of the inner cavity of the tank a. Further, instead of the supply of the drying air adjusted by the dehumidifier 81 or the burner device, the drying air by natural outside air is applied to the top of the roof 23 of the bottle body 2 by the ceiling of the inner cavity of the grain tank a. A blower opening c for supplying air to the hopper is opened and closed by an opening / closing lid 25.

The vertical cylindrical grain storage and drying apparatus A according to the present invention having the above-described structure is provided with a predetermined amount of grains smaller than the total capacity of the grain basin a in the grain basin a by the conveyer 5. , And the grains are dried by feeding dry air or natural outside air into the grain tank a while stirring and mixing by the operation of the vertical auger 41. At the point where the process has progressed, the drying process is continued by adding the undried kernels so as to be added, and by repeating the process, all of the kernels introduced into the cereal tank a by the cumulative stirring and mixing method are subjected to a predetermined process. With respect to the use of the grains dried to the moisture content and then dried out by the operation of the discharge conveyor 22 and the discharge auger 3, the conventional vertical cylindrical shape shown in FIG. Is the same as the grain storage and drying unit A But, it is opposite to the direction of the drying air or natural of the outside air flow feeds for Zhang elaborate grain in the Kokuso a.

That is, the drying air supplied from the blowing port c to the upper part of the inner cavity of the grain tank a is supplied to the suction port 7 under the air guide path b below the floor plate 20.
By the operation of the suction blower 7 connected to 0, the grain layer deposited on the floor plate 20 and inserted into the grain tank a is first transmitted through the area W to be stirred and mixed by the vertical augers 41. Then, through the area Y just above the floor plate 20 where there is no movement of the grain, and flow out to the air guide passage b below the floor plate 20,
The light is transmitted downward from above.

[0016] With this, every time a grain is supplied so as to be added to the grain tank a, a large amount of dust soaring up and filling the grain tank a floats in the dry wind, and the grain rises. When it is discharged to the outside together with the exhaust air of the dry air that has passed through the grain layer, by passing through the grain layer in the immovable area Y,
The grain layer in this section Y is used as a filter, filtered and removed from the exhaust air, and the exhaust air discharged from the air guide path b to the outside is kept in a dust-free state.

[0017]

As described above, in the means of the present invention, the grain layer in the area Y just above the floor plate 20 which is not moved without being subjected to the stirring / mixing action is stored in the grain tank a. Each time a grain is thrown in, the dust generated in the grain tank a becomes a filter that adsorbs and separates, so that the exhaust air of the dry wind discharged to the outside through the air guide path b below the floor plate 20 removes the dust. As a result, the dust discharged to the outside together with the exhausted air can be effectively removed, and the processing of the dust and the exhausted air is significantly facilitated.

[Brief description of the drawings]

FIG. 1 is a partially broken front view of a conventional vertical cylindrical grain storage and drying apparatus.

FIG. 2 is a table illustrating the operation of the above.

FIG. 3 is a partially broken front view of a vertical cylindrical grain storage and drying apparatus embodying the present invention.

[Explanation of symbols]

A: grain storage and drying device, H: building, WY area, a ...
Grain tank, b ... air duct, c ... air outlet, 1 ... foundation, 2 ... bottle body, 2a ... machine wall, 20 ... floor plate, 21 ... outlet, 22 ... outlet conveyor, 23 ... roof, 24 ... exhaust outlet , 25 ... Opening / closing lid, 3 ... Discharge auger, 30 ... Conductor casing, 40 ... Supporting machine frame, 41 ... Vertical auger, 42 ... Conductor casing, 43 ... Rail, 5 ... Conveyor for staking, 6 ... Pressure feeding Blower, 60 ...
Outlet, 7: suction blower, 70: suction port, 8: blower, 80: blower cylinder, 81: dehumidifier.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F26B 11/16 F26B 21/00

Claims (1)

(57) [Claims] 1. An air-permeable floor plate 20 having a discharge port 21 at a center portion is provided on the bottom side of a lumen of a cylindrical bottle main body 2 whose axial direction is a vertical direction. A vertical auger that forms a grain trough a into which grains are inserted upward, and also forms an air guide path b below the floor plate 20, and agitates and flows the inserted grains vertically in the grain trough a. And the lower end of the vertical auger 41 and the floor plate 20
A discharge auger 3 is mounted between the upper surface of the bottle main body 2 for revolving and rotating around the upper surface of the floor plate 20 around the upper surface of the floor 21 to transfer the grains toward the discharge port 21. An air outlet c for supplying dry air is provided at the upper part of the inner cavity, and a suction port 70 of the suction blower 7 is connected to an air guide path b below the floor plate 20, so that the kernels are put into the grain tank a. The dry air supplied from the air supply port c at the top of the inner cavity of the bottle main body 2 is fed into the grain tank a while being stirred and mixed vertically by the vertical augers 41. Floor plate 20 from above the grain layer
Non-circulation characterized in that dust generated in the grain basin (a) at the time of grain input is removed from the exhaust air by flowing the grain toward the lower air guide path (b) to dry the grain. -A dust removal method in a vertical cylindrical grain storage and drying device of a cumulative stirring and mixing system.