JPH07194240A - Wet-type dust collector for exhaust air in grain treater - Google Patents

Abstract

PURPOSE:To provide a wet-type dust collector which works quietly without noise and can prevent back flow caused by pressure fluctuation without setting a damper for a cereal grain processing facilities such as a cooperative grains- drying and processing installations. CONSTITUTION:In a wet-type dust collector for processing cereal grains equipped with an exhaust outlet above the dust-collecting chamber 2, the inlet pipe 6 connecting to the dust-collecting chamber 2 is equipped with a showering chamber and a mist separator made of a sound-absorbing or sound-insulating materials is set to the exhaust outlet above the dust-collecting chamber. The noise from the blower or the like is absorbed or insulated by the materials used at the exhaust outlet 5 above the dust-collecting chamber. Thus, the noise can be controlled from the wet-type dust collector for the exhaust.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to receiving, drying, and
Wet dust collector for exhaust of co-drying preparation facility equipped with grain handling facilities such as hulling, preparation and shipping, and grain processing equipment used for handling grains such as receiving, drying, hulling, preparing or shipping grains. Regarding wet type dust collector for exhaust,
In particular, the present invention relates to a wet dust collecting apparatus for low-pressure exhaust containing dust generated in each grain processing facility such as drying of grains and sorting and hulling.

[0002]

2. Description of the Related Art For example, dusts discharged from a joint drying and preparation facility range from grains having a large particle size such as straw debris of rice and wheat, to fine particles such as rice bran and even several microns. Even minute dusts are present in a very wide range, the amount of dust is large, and the apparent specific gravity is light on top of it, so it is difficult to remove dust, and a wet dust collector such as a dry dust collector such as a bag filter or a spray tower. Is used.
However, a wet dust collector such as a spray tower has a simple spray structure, but since the desired dust removal efficiency cannot be obtained, a preliminary dust collector is further required, and during long-term use. However, there were problems such as clogging and dust accumulation on the surface and increased pressure loss. Therefore, a dust collector is used in which a large number of spray nozzles are provided at the exhaust inlet of the dust collection chamber and a mist separator is provided on the dust collection chamber.

[0003]

Exhaust gas sent through the exhaust pipe from the co-drying and preparation facility enters the dust collecting chamber due to the noise of the exhaust fan, but is collected by the shower and flows into the dust collecting chamber. Since the noise is emitted, the noise of the exhaust fan is exhausted along with the exhaust air, and the noise from the dust collector is a problem. An object of the present invention is to solve the noise of the air blower in the exhaust type wet dust collector of a grain processing apparatus such as a joint drying and preparation facility.

[0004]

The present invention provides a wet dust collector for exhaust of a grain processing apparatus such as a joint drying and preparation facility,
An object of the present invention is to provide a wet dust collecting apparatus that can eliminate noise from an exhaust fan, operate quietly, and prevent backflow due to pressure fluctuations without providing a backflow prevention damper.

That is, according to the present invention, in the exhaust type wet dust collector of the grain processing apparatus having the exhaust outlet portion above the dust collecting chamber, the shower chamber is provided in the exhaust introducing pipe portion communicating with the dust collecting chamber. In addition, a mist separator made of a sound absorbing material or a sound insulating material is provided at an exhaust outlet portion above the dust collecting chamber, and the wet dust collecting apparatus for exhaust of a grain processing apparatus is characterized.

Like the conventional wet dust collector, the wet dust collector of the present invention removes dust generated from a joint drying preparation facility such as grain receiving, hulling, rough selection, drying, preparation and other facilities. Can also be used to
Although it can be used in a dryer or other grain processing apparatus having a large variation in exhaust amount, it is particularly useful as a low pressure exhaust wet dust collector used in communication with exhaust ports of a plurality of grain processing facilities.

In the present invention, the exhaust type wet dust collector of the grain processing apparatus is provided with an exhaust introduction pipe section and an exhaust outlet section provided with a mist separator formed of a sound absorbing material. A shower room equipped with a fountain nozzle, sprinkling nozzle, spray nozzle, etc. is provided in the exhaust introduction pipe section, and the exhaust action accompanied by the noise of the exhaust fan is collected by the suction action of the fountain flow, sprinkling flow or spray. Suction into. The shower chamber of the exhaust gas introducing pipe section adjusts the size of the opening of the shower chamber, for example, the opening of the venturi section of the exhaust gas introducing pipe unit, so that the exhaust gas pressure is adjusted when the blowing pressure of the inflowing exhaust gas is lower than a predetermined value. It is preferable to be able to raise it.

In the present invention, in order to absorb or shield the noise of the exhaust fan accompanying the exhaust gas from the exhaust gas introducing pipe portion, the sound absorbing material or the sound insulating material is provided at the exhaust outlet portion formed above the dust collecting chamber. The mist separator formed in 1. is provided. The mist separator is a mist separator having a corrugated or rectangular cross section formed of a sound absorbing material such as a porous material and arranged in one or more stages, or a honeycomb-shaped separator is arranged in one or more stages. Can be formed. When the mist separator is formed of a sound insulation material, a double wall structure, for example, a double wall structure of stainless material, or a composite wall structure, for example, a composite wall structure of stainless steel and porous material or plastic material, etc. A sound insulation structure is preferable.

[0009]

According to the present invention, in a wet dust collecting apparatus for exhaust of a grain processing apparatus, a mist formed of a sound absorbing material is provided at an exhaust outlet portion above the dust collecting chamber by providing a spray chamber in the exhaust introducing pipe portion of the dust collecting chamber. Since the separator is provided, even if a shower room for spraying or spraying the wash water, for example, a venturi scrubber is provided on the exhaust gas introducing pipe, the sound of spraying or spraying the wash water does not come out of the dust collector. It can hinder and can perform wet dust collection quietly. Since the present invention provides the shower chamber for spraying or spraying the cleaning water in the conduit opening to the dust collecting chamber, the amount of mist entering the dust collecting chamber can be reduced, so that the mist formed of the sound absorbing material in the dust collecting chamber. By disposing the separators in multiple stages, it is possible to muffle the noise of the exhaust fan accompanying the exhaust and the impact noise of the shower generated in the shower room.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings, but the present invention is not limited to the following examples and description. FIG. 1 is a schematic vertical sectional view of a wet dust collecting apparatus according to an embodiment of the present invention.

In the embodiment shown in FIG. 1, a wet exhaust dust collector main body 1 has a dust collecting chamber 2 formed therein. The dust collection chamber 2 has a tubular exhaust gas introducing portion 3 formed on one side and an exhaust gas outlet portion 5 provided with a mist separator 4 on the other side. Tubular exhaust introduction part 3 of the main body 1
The exhaust introduction pipe portion 6 and the exhaust suction pipe portion 7 are provided below the exhaust introduction pipe portion 6. In this example, the opposing side walls 8 of the exhaust gas introducing pipe portion 6 are provided in a posture 9 (indicated by a chain line) that is inclined inwardly downward, and further inside when the blower pressure of the exhaust gas decreases. It is fixed in a posture 10 (shown by the solid line) that is inclined to. In the present example, the opposed side walls 11 of the exhaust suction pipe portion 7 are formed in a posture inclining outward toward the lower side, and the side wall 11 is provided with the injection nozzles 12 directed downward respectively. .

In the present embodiment, the mist separator 4 provided at the exhaust outlet 5 is made up of umbrella-shaped plates 14 formed of a stainless steel plate in a double structure and arranged in parallel with a gap 15 in the horizontal direction. Are provided in multiple stages. When the mist separator 4 is configured by providing umbrella-shaped plates in multiple stages, the umbrella-shaped plates 14 located on the upper stage are located above the gaps 15 formed in the rows of the umbrella-shaped plates 14 immediately below. It is located and provided. Therefore, the airflow including mist accompanied by noise rising from below hits the umbrella-shaped plate 14 and the direction is changed, the mist is removed, and sound absorption and sound insulation are performed.

Since this example is constructed as described above, when all the facilities of the joint drying and preparation facility (not shown) are operated, the blast pressure of the exhaust gas is the maximum, so the exhaust gas is the maximum. The side wall 8 of the introduction pipe portion 6 is fixed to the position of the posture 9 so that the opening area of the outlet 13 of the exhaust introduction pipe portion 6 is maximized, and the injection nozzle 12 of the exhaust suction pipe portion 7 serves as a spray tower. The water stream is sprayed in a mist with a spraying quantity sufficient to remove dust. The dust that is sprayed and gets wet becomes heavy,
Separated from the air in the exhaust. The mist atomized in the form of mist moves to the exhaust outlet 5 together with the separated air, hits the mist separator 4 made of a stainless steel double structure umbrella-shaped plate, and the mist is separated and removed. At the same time, it is insulated and flows out from the exhaust outlet 5.

When a part of the communal drying / preparation facility (not shown) is not operated, the blast pressure of the exhaust gas decreases, so that the side wall 8 of the exhaust gas introducing pipe part 6 is exhausted from the exhaust gas introducing pipe part 6. The opening area of the outlet 13 is fixed and narrowed, for example, at the position of the posture 10 so as to correspond to the blowing pressure of the exhaust gas. Further, from the injection nozzle 12 of the exhaust suction pipe portion 7, in addition to removing dust for collecting dust, a water flow is sprayed in a mist form with an injection amount that can positively suck exhaust gas. By the jet of the water stream, the exhaust gas is sucked in the jet direction of the water stream and introduced into the dust collecting chamber 2. The dust that has become wet due to the jetted water stream becomes heavier and is separated from the air in the exhaust. In this case, the mist sprayed in the form of mist slightly increases due to the increase in the water flow, but the mist enters the dust collection chamber 2 and is separated. The air containing some mist, which is not separated, moves to the exhaust outlet 5 along with the noise of the exhaust fan, hits the mist separator 4 made of a double-structured umbrella-shaped plate made of stainless steel, The mist is separated and removed, and at the same time, it is sound-insulated and flows out from the exhaust outlet 5.

[0015]

INDUSTRIAL APPLICABILITY According to the present invention, in a wet dust collector for exhaust of a grain processing apparatus, a spray chamber is provided in an exhaust introduction pipe portion of a dust collecting chamber, and a sound absorbing material is formed in an exhaust outlet portion above the dust collecting chamber. Since a mist separator is provided, compared to the conventional wet type dust collector for exhaust of the common co-drying and preparation facility, even if the exhaust air blow pressure fluctuates, the exhaust air blow pressure is adjusted and the exhaust fan Noise can be silenced and dust can be collected quietly. The present invention is
A shower room for spraying or spraying cleaning water is provided inside the duct that opens into the dust collection chamber, so the amount of mist that enters the dust collection chamber is reduced and a sound absorbing or insulating material is formed at the exhaust outlet of the dust collection chamber. Since the mist separators are arranged in multiple stages, compared to the conventional exhaust type wet dust collector, the noise generated by the exhaust fan can be silenced, and even if fluctuations in the exhaust blow pressure occur, It is easy to muffle the noise of the exhaust fan by adjusting the blowing pressure of.

The present invention has a simple structure in which a mist separator is formed of a sound absorbing material or a sound insulating material to separate mist and muffle sound. Therefore, dust collection can be performed at a lower cost than that of a conventional wet dust collecting apparatus. It is economical because it is possible to reduce the noise generated by the blower and the like. Further, according to the present invention, since the shower chamber is provided in the exhaust gas introducing pipe portion of the dust collecting chamber and the mist separator 4 is formed of the sound absorbing material or the sound insulating material in the exhaust outlet portion of the dust collecting chamber, the structure of the wet dust collecting apparatus is provided. It becomes easier to avoid dust accumulation, and it is possible to operate for a longer period of time.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a wet dust collector according to an embodiment of the present invention.

[Explanation of symbols]

 1 Dust collector main body 2 Dust collection chamber 3 Exhaust inlet part 4 Mist separator 5 Exhaust outlet part 6 Exhaust introduction pipe part 7 Exhaust suction pipe part 8 Side walls of exhaust introduction pipe part facing each other 9 Inclination of side wall of exhaust introduction pipe part 10 Inclination of Side Walls of Exhaust Gas Intake Pipe Part 11 Side Walls of Exhaust Suction Pipe Part 12 Injection Nozzle 13 Exhaust Gas Inlet Port Outlet 14 Umbrella Plate with Double Wall Structure 15 Umbrella Plate with Double Wall Structure Gap between

Claims (1)

[Claims] 1. A wet dust collector for exhaust of a grain processing device, comprising an exhaust outlet above a dust collecting chamber, wherein a shower chamber is provided in an exhaust introducing pipe portion communicating with the dust collecting chamber,
A wet dust collecting apparatus for exhaust of a grain processing apparatus, wherein a mist separator formed of a sound absorbing material or a sound insulating material is provided at an exhaust outlet portion above the dust collecting chamber.