JP2002273140A - Dust collector for grain drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust collector for a grain drying machine capable of being constituted to a simple and small size even in a wet type device, lessening an amount of water used by circulating and using water in a dust-collecting water storage chamber and outstandingly enhancing a removal rate of a dust, particularly a fine dust. SOLUTION: The dust collector 1 for the grain drying machine is constituted of an atomization/dust removal chamber 2 provided at an upper stage, and the dust-collecting water storage chamber provided at a lower stage. A mist film producing plate 5 is arranged in the atomization/dust removal chamber 2 in opposed to an introduction port 4 of a discharge air press-fed from the grain drying machine. Water pumped from the dust collecting water storage chamber 3 by an underwater pump 7 is blown to the mist film producing plate 5 to form a mist film for shielding the introduction port 4 of the discharge air in the atomization/dust removal chamber 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cereal which is used in combination with a cereal dryer to separate and collect fine dust in the exhaust air discharged from the exhaust port of the cereal dryer or the exhaust port of the dust extractor. The present invention relates to a dust collector for a dryer.

[0002]

2. Description of the Related Art In a grain dryer for drying and drying a grain through air, the exhaust air that passes through a layer to be dried and is discharged from an air outlet includes straw chips, grain shells, spikelets, wool mushrooms, mud or dust. Contains a lot of dust. In addition, the grain dryer may be provided with a dust collector that removes dust mixed with the grain to be dried. Is discharged.

Conventionally, in a general farm or a small-scale grain drying facility, a duct connected to an exhaust port of a grain dryer is taken out, and exhaust air containing dust is exhausted from the exhaust port to the outside as it is. That is the fact.

[0004]

By the way, if the exhaust air discharged from the exhaust port of the grain dryer is guided outside by a duct and discharged, it is inevitable that the surrounding environment will be deteriorated due to dust. Demand for dust collectors used in conjunction with grain dryers is also increasing, and various wet or dry dust collectors have been developed to meet the demand.

[0005] For example, in a drying facility,
This is a shower-type wet dust collector such as 73133. However, in this shower-type wet dust collector, it is necessary to increase the area of the shower room in order to increase the dust collection efficiency. It takes space. As a compact dust collector for general farmers, a wet dust collector as disclosed in JP-A-8-303951 is also known, but such a small wet dust collector has a small area. The circulating water is sprayed from the nozzle to increase the dust collection efficiency. The sprayed circulating water gradually contains the dust and debris from the grain dryer, so the nozzle that sprays the circulating water eventually reduces the dust collection efficiency. ing.

[0006] The dry cyclone type dust collector can be easily installed in a general farm or a small-scale grain drying facility because it can be configured simply and relatively small.
In particular, since the removal rate of fine dust is low, it has been regarded as a problem that the surrounding environment cannot be sufficiently maintained.

Therefore, the present invention provides a simple and compact structure in which the spray dust removing chamber and the dust collecting and storing chamber are integrated into a single unit at the top and bottom, and the water in the dust collecting and storing chamber is circulated and used. This reduces the amount of water used, does not use a nozzle for spraying water, and forms a mist film that blocks the inlet of exhaust air pressure-fed from the grain dryer in the spray dust chamber. In particular, an object of the present invention is to provide a dust collector for a grain dryer that can greatly improve the removal rate of fine dust.

[0008]

According to a first aspect of the present invention, there is provided a dust collecting apparatus for a grain dryer, comprising: an exhaust port of the grain dryer or a dust collector attached to the grain dryer. A dust collector connected to a dust outlet to separate and collect fine dust in the exhaust air discharged from an exhaust outlet of a grain dryer or a dust outlet of a dust extractor, and a spray provided in an upper stage. It consists of a dust removal chamber and a dust collection and storage chamber provided in the lower stage, and in the upper spray dust removal chamber, a fog film generating plate is arranged opposite to the inlet of the exhaust air pressure-fed from the grain dryer, Water pumped from a lower dust collecting water chamber is sprayed on the mist film generating plate to form a mist film that blocks an exhaust air introduction port in the spray dust removing chamber.

According to a second aspect of the present invention, there is provided a dust collecting apparatus for a grain dryer according to the first aspect, wherein the spray film generating plate has a gentle conical surface as a spray surface of the water. is there.

According to a third aspect of the present invention, in the dust collecting apparatus for a grain dryer according to the first or second aspect, the fog film generating plate is configured to vibrate or swing back and forth by the spray pressure of water. It is characterized by having been done.

According to a fourth aspect of the present invention, there is provided a dust collector for a grain dryer according to the first, second or third aspect, wherein the fog film generating plate rotates at a high speed. is there.

According to a fifth aspect of the present invention, there is provided a dust collecting apparatus for a grain dryer according to the first, second, third, or fourth aspect, wherein a submersible pump is provided in a lower dust collecting storage chamber. It is characterized in that the pumped water is sprayed on the mist film generating plate in the upper-stage spray dust removing chamber.

According to a sixth aspect of the present invention, there is provided the dust collecting apparatus for a grain dryer according to the fifth aspect, wherein the submerged pump side of the water supply pipe for supplying water sprayed from the submerged pump to the fog film generating plate is flexible. As a pipe, the distal end side of the flexible pipe is made detachable with respect to a connection destination thereof, and the flexible pipe can be used for drainage of a dust collecting storage chamber. is there.

[0014]

FIG. 1 is a sectional view showing an embodiment of a dust collecting apparatus for drying a grain according to the present invention, FIG. 2 is a sectional view showing an embodiment in which water is drained from a dust collecting water storage chamber, and FIG. It is sectional drawing which shows the aspect which uses the dust collection device for grain drying which concerns on this invention connected to the exhaust port of a grain dryer.

FIG. 4 is a cross-sectional view showing another embodiment of the grain drying dust collecting apparatus according to the present invention, FIG. 5 is a cross-sectional view of the same main part, and FIG. 6 shows the operation of the same main part. Sectional drawing, FIG. 7: is sectional drawing which shows another embodiment of the dust collector for grain drying which concerns on this invention.

In FIGS. 1 and 2, reference numeral 1 denotes a dust collecting apparatus for drying a grain. The grain drying dust collecting apparatus 1 is provided with a spray dust removing chamber 2 in an upper stage and a dust collecting and storing chamber 3 in a lower stage. A spray film generating plate 5 for forming a spray film is disposed in the spray dust removing chamber 2 in the upper stage so as to face the exhaust air inlet 4 fed from the grain dryer. A fountain nozzle 6 is closely opposed to the front side of the nozzle. A submersible pump 7 is arranged in the lower dust collecting and storing chamber 3, and a water pipe 8 of the submersible pump 7 is connected to the fountain nozzle 6. The water pipe 8 is a flexible pipe,
The tip is detachable from the base end of the fountain nozzle 6. 9,
10 is the connection cock. An exhaust port 12 provided with a filter 11 is opened on the upper surface of the spray dust chamber 2. 13
Is an outlet of the water pipe 8.

The dust collector 1 for a grain dryer according to the present invention comprises:
As shown in FIG. 3, an exhaust air inlet 4 is connected to an exhaust air outlet 15 of a grain dryer 14 via a duct 16 for use. 1
7 is a hot air chamber, 18 is a burner, 19 is a grain drying layer, 20 is an exhaust air chamber, and 21 is a suction blower.

From the exhaust port 15 of the grain dryer 14, the exhaust air is introduced into the dust removing chamber 2 from the exhaust air inlet 4 into the dust collector 1 for the grain dryer as a compressed air by the suction blower 21. In the spray dust removing chamber 2, water pumped from the dust collecting water storage chamber 3 by the submersible pump 7 is sprayed onto the mist film generating plate 5 arranged opposite to the exhaust air introduction port 4, and the spray dust removing chamber 2 is sprayed.
Inside, a fog film is formed so as to block the exhaust air introduction port 4.
For this reason, the dust in the exhaust air to be introduced is efficiently removed by the fog film up to the fine dust. However, even if there is dust passing through the fog film, the dust remains in the spray dust removal chamber 2 due to the fog filling the dust removal chamber 2. The clean exhaust air from which dust has been removed is
2 to the outside.

The dust removed in the spray dust removing chamber 2 as described above is collected in the lower dust collecting storage chamber 3 together with the mist film and the water droplets caused by the mist. The water in the dust collecting and storing chamber 3 is circulated and used to form the fog film.

When dust accumulates up to a predetermined amount in the dust collecting and storing chamber 3, or when dust is discharged or drained as required, the distal end of the water supply pipe 8 at the base end of the fountain nozzle 6. 2 and the connecting cocks 9 and 10 are removed.
As shown in the figure, the water pipe 8 connected to the submersible pump 7
Can be drawn out from the outlet 13 and the water and dust in the dust collecting and storing chamber 3 can be efficiently and easily discharged by the submersible pump 7.

In the dust collecting apparatus 1 for a grain dryer according to the present invention, the fog film forming plate 5 is, as shown in FIGS.
If the water spray surface 5a is a gentle conical surface, as shown in FIG. 6, the mist film can be diffused rearward in the spray dust removal chamber 2, and by increasing the surface area of the mist film,
The dust removal action efficiency can be further improved. Further, since the mist film moves at a high speed from the front to the rear of the spray dust removing chamber 2, a wind flow from the front to the rear is formed in the spray dust removing chamber 2, and the grain dryer 14 is provided with a grain dryer. The dust collecting device 1 can function to reduce the resistance of the flow of the generated wind.

Also, as shown in FIG. 7, the mist film generating plate 5 is supported by an elastic body 5b, and is configured to vibrate or swing back and forth by the spray pressure of water, thereby providing a variety of mist. By forming a film, dust removal efficiency can be further improved.

In the illustrated embodiment, the fog film generating plate 5
By rotating at a high speed, the fog film to be formed can be further changed, whereby the efficiency of dust removal can be improved. The illustration of the configuration is omitted.

In the illustrated embodiment, the dust collector 1 for a grain dryer according to the present invention is connected to an exhaust port 15 of a grain dryer 14.
Although the embodiment used by connecting to a grain dryer is illustrated, the dust collector 1 for a grain dryer according to the present invention can be used by being connected to a dust outlet of a duster attached to the grain dryer 1. Further, in addition to the dust collector 1 for a grain dryer according to the present invention, it can be used as a dust collector for other grain preparation machines.

[0025]

According to the present invention, a dust removing chamber provided in the upper stage and a dust collecting and storing chamber provided in the lower stage are provided. A fog film generating plate is placed facing the wind inlet, and water pumped up from the lower dust collecting storage chamber is sprayed on the fog film generating plate to form a fog film that blocks the exhaust air inlet in the spray dust removal chamber. With this configuration, the spray dust removal chamber and the dust collection and storage chamber can be integrated into one at the top and bottom, and can be configured simply and compactly even in a wet type, and the water in the dust collection and storage chamber is circulated and used. As a result, the amount of water used can be reduced, and the effect of significantly improving the removal rate of dust, particularly fine dust, can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a grain drying dust collecting apparatus according to the present invention.

FIG. 2 is a cross-sectional view showing a mode of draining water from the dust collecting water storage chamber.

FIG. 3 is a cross-sectional view showing an embodiment in which the dust collecting apparatus for drying a grain according to the present invention is connected to an exhaust port of a grain dryer and used.

FIG. 4 is a cross-sectional view illustrating another embodiment of the grain drying dust collecting apparatus according to the present invention.

FIG. 5 is a sectional view of a main part of the above.

FIG. 6 is a sectional view showing the operation of the essential part of the above.

FIG. 7 is a sectional view showing still another embodiment of the grain drying dust collecting apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dust collection apparatus for grain drying 2 Spray and dust removal chamber 3 Dust collection water storage chamber 4 Inlet for exhaust air 5 Fog film generation plate 5a Water spray surface 5b Elastic body 6 Fountain nozzle 7 Submersible pump 8 Water pipe 9, 10 Connection cock 11 Filter 12 Outlet 13 Outlet of water pipe 14 Grain dryer 15 Outlet 16 Duct 17 Hot air chamber 18 Burner 19 Grain dry layer 20 Exhaust chamber 21 Suction blower

Claims (6)

[Claims] 1. An exhaust air discharged from an exhaust port of a grain dryer or an exhaust port of a dust extractor connected to an exhaust port of a grain dryer or an exhaust port of a dust extractor attached to the grain dryer. This is a dust collection device that separates and collects fine dust inside, and consists of a spray dust removal chamber provided in the upper stage and a dust collection water storage room provided in the lower stage. A fog film generating plate is arranged opposite to the inlet of the exhaust air that is pressure-fed from the machine, and the water pumped up from the lower dust collecting water chamber is sprayed on the fog film generating plate to introduce the exhaust air into the spray dust removing chamber. A dust collecting apparatus for a grain dryer, wherein the dust collecting apparatus is configured to form a mist film that shields the mist. 2. The dust collecting apparatus for a grain dryer according to claim 1, wherein the spray surface of the fog film forming plate has a gentle conical surface. 3. The dust collecting apparatus for a grain dryer according to claim 1, wherein the fog film generating plate is configured to vibrate or swing back and forth by a spray pressure of water. 4. The dust collector for a grain dryer according to claim 1, wherein the fog film generating plate rotates at a high speed. 5. A submersible pump is provided in the lower dust collecting and storing chamber, and the water pumped by the submersible pump is sprayed on the mist film generating plate in the upper spray dust removing chamber. 5. The dust collector for a grain dryer according to 2, 3, or 4. 6. A submersible pump side of a water supply pipe for supplying water sprayed from the submersible pump to the fog film generating plate is a flexible pipe,
6. The flexible tube according to claim 5, wherein a distal end side of the flexible tube is detachably attached to a connection destination thereof, and the flexible tube can be used for drainage of a dust collecting storage chamber. Dust collector for grain dryer.