JP3299619B2 - Wet dust collector for exhaust of grain processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cereal receiving, drying,
Wet dust collectors for exhaust from a co-drying preparation facility equipped with grain handling facilities such as hulling, preparation and shipping, and cereal processing equipment used for handling cereals such as receiving, drying, hulling, preparing or shipping cereals Regarding the wet dust collector for exhaust,
In particular, the present invention relates to a wet dust collector for low-pressure exhaust including dust generated in each grain processing facility such as drying and sorting hulling of grains and the like.

[0002]

2. Description of the Related Art For example, dusts discharged from a co-drying preparation facility range from grains having a large particle size, such as rice and barley straw, to fine particles such as paddy tender, and even several microns. It exists in a very wide range, even to minute dust, and has a large amount of dust.Since its apparent specific gravity is light, it is difficult to remove dust and wet dust collectors such as dry filters such as bag filters and spray towers. Is used.
However, a wet dust collector such as a spray tower has a simple spray structure, but does not provide the desired dust removal efficiency, so that a preliminary dust collector is further required. This causes problems such as clogging and dust accumulation, resulting in an increase in pressure loss. Therefore, a dust collector is used in which a large number of spray nozzles are provided at an exhaust inlet of the dust collection chamber and a mist separator is provided above the dust collection chamber.

[0003]

The exhaust gas sent from the co-drying preparation facility into the exhaust pipe enters the dust collection chamber with the noise of the exhaust fan, but is collected by the shower and passes through the dust collection chamber. Therefore, the noise of the exhaust fan is discharged as it is together with the exhaust gas, and the noise from the dust collector is regarded as a problem. An object of the present invention is to solve the noise of a blower in a wet dust collector for exhaust of a cereal processing device such as a co-drying preparation facility.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a wet-type dust collecting apparatus for exhausting a cereal processing apparatus such as a co-drying preparation facility.
It is an object of the present invention to provide a wet dust collector which can operate quietly by eliminating noise of an exhaust fan, and can prevent backflow due to pressure fluctuation without providing a backflow prevention damper.

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

[0006] The wet dust collector of the present invention, like the conventional wet dust collector, removes dust generated from a co-drying and preparing facility, for example, grain receiving, hulling, rough screening, drying, preparation, and other facilities. Can be used to
It can be used for dryers and other cereal processing devices with large fluctuations in the amount of exhaust gas, and is particularly useful as a low-pressure exhaust wet dust collector used in communication with the exhaust ports of a plurality of cereal processing facilities.

[0007] In the present invention, the wet dust collector for exhaust of a grain processing apparatus is provided with an exhaust inlet pipe and an exhaust outlet provided with a mist separator formed of a sound absorbing material. A shower room having a fountain nozzle, a water spray nozzle, a spray nozzle, or the like is provided in the exhaust gas introduction pipe portion. Suction is introduced. The shower room of the exhaust introduction pipe section adjusts the size of the opening of the shower room, for example, the opening of the venturi section of the exhaust introduction pipe section, and when the blowing pressure of the inflowing exhaust gas is lower than a predetermined value, the exhaust pressure is reduced. It is preferable to be able to increase.

In the present invention, a sound absorbing material or a sound insulating material is provided at an exhaust outlet formed above the dust collecting chamber in order to absorb or shield noise of an exhaust fan accompanying exhaust air from an exhaust introducing pipe portion. Is provided. The mist separator has a corrugated cross section formed of a sound absorbing material such as a porous material, a square mist separation plate is 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 insulating material, a double wall structure, for example, a double wall structure of stainless steel, or a composite wall structure, for example, a composite wall structure of stainless steel and a porous material or a plastic material It is preferable to use a sound insulation structure.

[0009]

According to the present invention, there is provided a wet dust collector for exhausting a grain processing apparatus, wherein a spray chamber is provided in an exhaust inlet pipe of the dust collecting chamber, and a mist formed of a sound absorbing material is provided in an exhaust outlet above the dust collecting chamber. Since the separator is provided, even if a shower room for spraying or spraying the washing water, for example, a venturi scrubber is provided in the exhaust introduction pipe portion, the sound of spraying or spraying the washing water does not come out of the dust collector. It can obstruct and can perform wet dust collection quietly. According to the present invention, since the shower room for spraying or spraying the cleaning water is provided in the conduit opening to the dust collection chamber, the amount of mist entering the dust collection chamber can be reduced, so that the mist formed by the sound absorbing material in the dust collection chamber can be reduced. By arranging the separators in multiple stages, it is possible to muffle the noise of the exhaust fan accompanying the exhaust and the impact sound 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 by the following examples and descriptions. FIG. 1 is a schematic longitudinal sectional view of a wet dust collecting apparatus according to one embodiment of the present invention.

In the embodiment shown in FIG. 1, a dust collecting apparatus main body 1 for wet exhaust has a dust collecting chamber 2 formed therein. The dust collection chamber 2 has a tubular exhaust introduction section 3 formed on one side, and an exhaust outlet section 5 having a mist separator 4 formed on the other side. Tubular exhaust introduction section 3 of the main body 1
Is provided with an exhaust introduction pipe section 6 and an exhaust suction pipe section 7 therebelow. In this example, the opposed side wall 8 of the exhaust gas introduction pipe section 6 is provided in a posture 9 (indicated by a dashed line) inclined downward and inward, and when the exhaust air pressure is reduced, the side wall 8 is further inward. Is fixed to the posture 10 (shown by a solid line) inclined at a right angle. In this example, the opposed side walls 11 of the exhaust suction pipe section 7 are formed so as to be inclined downward and outward, and the side walls 11 are provided with injection nozzles 12 respectively downward. .

In the present embodiment, the mist separator 4 provided at the exhaust outlet 5 is formed by arranging an umbrella-shaped plate 14 formed of a stainless steel plate in a double structure 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 at the upper stage are positioned above gaps 15 formed in the row of umbrella-shaped plates 14 immediately below. It is located and provided. Therefore, the air current containing mist accompanied by noise rising from below hits the umbrella-shaped plate 14 and its direction is changed, thereby removing the mist and performing sound absorption and sound insulation.

In the present embodiment, the above configuration is adopted. When all the co-drying preparation facilities (not shown) are operated, the exhaust air blowing pressure is maximum. The side wall 8 of the introduction pipe section 6 is fixed to the position 9 so that the opening area of the outlet 13 of the exhaust introduction pipe section 6 is maximized, and from the injection nozzle 12 of the exhaust suction pipe section 7 as a spray tower. The water stream is sprayed in a mist state with an injection amount sufficient to remove dust. The dust that has been sprayed and wet becomes heavy,
Separated from air in exhaust. The mist sprayed in the form of a mist moves to the exhaust outlet 5 together with the separated air, and strikes the mist separator 4 formed of a stainless steel double structure umbrella-shaped plate, whereby the mist is separated and removed. At the same time, the sound is shielded and flows out from the exhaust outlet 5.

When some of the facilities of the co-drying preparation facility (not shown) are not operated, the air blowing pressure of the exhaust is reduced. The opening area of the outlet 13 is fixed and narrowed, for example, at the position 10 so as to correspond to the blowing pressure of the exhaust gas. Further, from the injection nozzle 12 of the exhaust suction pipe section 7, in addition to removing dust for dust collection, a water stream is sprayed in a mist state with an injection amount capable of positively sucking exhaust gas. Due to the jet of the water stream, the exhaust gas is sucked in the direction in which the water stream is jetted, and is introduced into the dust collection chamber 2. Dust wet by the jetted mist-like water flow becomes heavier and is separated from air in the exhaust. In this case, the mist sprayed in the form of a 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 without being separated moves to the exhaust outlet 5 with the noise of the exhaust fan, etc., and strikes the mist separator 4 formed of a stainless steel double-structured umbrella-shaped plate. The mist is separated and removed, is sound-insulated, and flows out of the exhaust outlet 5.

[0015]

According to the present invention, there is provided a wet dust collecting apparatus for exhausting a grain processing apparatus, wherein a spray chamber is provided in an exhaust introducing pipe portion of the dust collecting chamber, and a sound absorbing material is formed in an exhaust outlet above the dust collecting chamber. A mist separator is provided, so that even if the exhaust air pressure fluctuates, compared to the conventional wet-type dust collector for exhaust air at a co-drying preparation facility, the exhaust air pressure is adjusted and the exhaust air Noise can be reduced and dust can be collected quietly. The present invention
Since the shower room for spraying or spraying the washing water is provided in the conduit opening to the dust collection room, the amount of mist entering the dust collection room is reduced, and a sound absorbing material or a sound insulating material is formed at the exhaust outlet of the dust collection room. The mist separator is arranged in multiple stages, so that the noise generated by the exhaust fan can be reduced as compared with the conventional wet-type dust collector for exhaust air. It is easy to mute the noise of the exhaust fan by adjusting the air blowing pressure.

The present invention has a simple structure in which a mist separator is formed of a sound absorbing material or a sound insulating material, and separates and silences mist. Therefore, dust collection can be performed at a lower cost as compared with a conventional wet dust collector. At the same time, it is possible to reduce noise generated by an exhaust fan or the like, which is economical. Further, according to the present invention, the shower chamber is provided in the exhaust gas introduction pipe of the dust collection chamber, and the mist separator 4 is formed of a sound absorbing material or a sound insulating material at the exhaust outlet of the dust collection chamber. Is simplified, dust accumulation is easily avoided, and longer-term operation is possible.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a wet dust collecting apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION 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 Opposed side wall of exhaust introduction pipe part 9 Side wall of exhaust introduction pipe part inclined DESCRIPTION OF SYMBOLS 10 The further inclined attitude | position of the side wall of an exhaust introduction pipe part 11 The opposite side wall of an exhaust suction pipe part 12 Injection nozzle 13 Exhaust introduction pipe part exit 14 Double-walled umbrella-shaped board 15 Double-walled umbrella-shaped board Gap between

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01F 12/54 B01D 47/06

Claims (1)

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