JPH0696084B2 - Wet dust remover with outside air introduction hole - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a dust removing device that uses a vertical swirl flow and a horizontal swirl flow in combination to enhance the dust removal effect, and that easily stirs and discharges dust accumulated in a tank by the introduced outside air.

[Prior art]

Conventionally, various types of dust removers have been used in various fields, a method of utilizing centrifugal force by a swirling flow, a method of spraying water from a nozzle to humidify and agglomerate dust and the like,
A typical example is a method of removing dust with a filter.As shown in the present invention, the water in the tank is wound up by a vertical swirling flow to humidify the dust-containing gas, and further, a horizontal direction generated by a cyclone. At the same time, dust is removed by the centrifugal force of the swirling flow, and at the same time, the accumulated dust is agitated by the outside air introduced, and no dust remover is currently found.

[Problems to be Solved by the Invention]

The above-mentioned conventional dust remover has its own characteristics,
It is selected and used according to the purpose of use. For example, in a method using a centrifugal force represented by a cyclone, the amount of dust-containing gas processed is relatively large, but the outer diameter of particles that can be collected is only about 5 microns, and even smaller particles can be collected. Not suitable for collection. Further, in the humidification cleaning method by spraying water from the nozzle, particles of about 1 micron can be efficiently collected depending on the apparatus, but the apparatus itself becomes large-scaled, and a problem of running cost arises. The method that uses a filter has a high collection effect, but it causes a problem of clogging, and it is necessary to remove dust that has accumulated periodically to eliminate clogging, and compared to other methods. The amount of processing is also reduced. The present invention was invented in order to solve the problems associated with the conventional method as described above, it is possible to remove dust with a relatively simple device, and measure the increase in the processing amount by the thrust force,
It was developed for the purpose of providing a dust removing device that can easily discharge accumulated dust.

[Means for Solving the Problems]

In the sealed tank body (1), the inflow pipe (2) is attached so that the outlet port is located obliquely to the bottom surface through the wall surface, and the inner surface of the tank body (1) opposite to the outlet port is attached. , A shield plate (3) having a large number of small holes (3 ') inscribed therein is attached, and a conical inclined surface is provided in the middle of a cylindrical body having an opening at the bottom to reduce the diameter by one step. A cylinder (4) is formed, and the outer cylinder (4) is provided between the shield plate (3) and the side surface of the tank main body (1) so as to penetrate the wall surface of the tank main body. ) Are provided so as to penetrate through the wall surface of the tank body (1) and the outer cylinder (4) near the outer peripheral portion, respectively, and the outside air introduction hole (17) is provided in the bottom portion of the tank body (1). The present invention is a wet type dust remover having an outside air introduction hole having the above configuration.

[Work]

The present invention relates to an inflow pipe (2) for generating a vertical swirl flow.
A tank main body (1), a shield plate (3) for separating the swirl chamber (A) and the collection chamber (B), and a cyclone device section (C) for removing dust by a centrifugal force effect by a lateral swirling flow. It is a dust removing device which is attached to a tank and stores a proper amount of water inside the tank body (1) for use. To use this device, first connect the discharge pipe (6) to the suction device, position the attachment connected to the inflow pipe (2) near the dust generation source, and place an appropriate amount inside the tank body (1). Store water. When the suction device is operated, air is sucked from the inflow pipe (2) through the attachment, and at the same time dust generated is also sucked. The discharge side end of the inflow pipe (2) is located obliquely with respect to the bottom surface of the tank body (1), so air containing dust hits the water surface and water is scattered by the blown air. It becomes fine water splashes and scatters in the tank, and swirls in the swirl chamber (A) together with the air flow. Most of the water in the swirl chamber scatters and becomes a mixed state of dust-containing air and a suitable amount of water, and the dust is humidified, aggregated, and easily collected. Next, the air in the swirl chamber passes through a small hole (3 ') provided in the shield plate (3) and moves into the collection chamber (B), and a communication pipe provided on the wall surface of the tank body (1). (5) is sucked from one end and flows from the wall surface near the outer peripheral portion of the outer cylinder (4) into a swirling flow, and due to the centrifugal force effect, the dust moves to the vicinity of the inner wall surface of the outer cylinder (4) and falls, and is trapped. Collect at the bottom of the collection chamber (B). Since the discharge pipe (6) is located at the center of the upper part of the outer cylinder (4), the dust-free air is discharged to the outside through the suction device through the discharge pipe (6). Since the swirl chamber (A) and the collection chamber (B) are partitioned by the shield plate (3), the vertical swirling flow is generated only between this shield plate and the inner surface of the tank, and the collection chamber is affected. It has no effect. The above-mentioned piled dust is discharged to the outside through the piled dust discharge pipe (12), and the piled state of dust is related to the discharge efficiency. As the dust is removed, the dust collected on the inner bottom of the tank body (1) gradually accumulates, but cement may be included in the dust when the wall material is peeled off and solidified during the accumulation. Therefore, in this case, the dust removal work must be stopped, the inspection hatch (9) must be opened, and the accumulated dust must be stirred before being discharged. In order to prevent this in the present proposal, an outside air introduction hole (17) is provided at the bottom of the tank body (1), and the negative pressure inside the tank is used to take in the outside air from this outside air introduction hole to form bubbles and move to the water surface. As a result, it is possible to stir the accumulated dust and prevent it from solidifying. As described above, since the present apparatus has the humidifying and aggregating function by the vertical swirl flow generated by the inflow pipe (2) and the dust removing function by the horizontal swirl flow generated by the cyclone device section (C), efficient dust removal is achieved. Can be effective,
Moreover, the accumulated dust can be easily discharged.

【Example】

(A) In the metallic sealed tank body (1),
The inflow pipe (2) whose lower end is curved is attached by penetrating through the center of the upper part of the tank body (1) with its tip positioned below. (B) A large number of small holes (3 ') are formed in a part of the plate body having a shape that fits the inner wall surface of the tank body (1) to form the shield plate (3). (C) An outer cylinder (4) is formed by providing an inclined surface in the middle of the cylindrical body and further narrowing the diameter, and a discharge pipe (6) penetrating the center is attached to the upper part of the outer cylinder (4) to attach the cyclone. It constitutes a device section (C). (D) A shield plate (3) is attached to the right side of the inflow pipe (2) in contact with the wall surface of the tank body (1), and a discharge pipe (6) is attached to the right side of the shield plate (3). The outer cylinder (4) is attached through the upper part of the tank body (1), and the U-shaped communication pipe (5) is attached with one end thereof penetrating the side wall surface of the tank body (1) and the other end. Outer cylinder (4)
Attach by penetrating near the outer periphery of the upper part. (E) Attach the manhole (8) to the upper part of the tank body (1), the hatch (9) and the viewing windows (10) and (11) to the lower part, and the accumulated dust discharge pipe (12). (F) A bowl-shaped recess (18) and a plurality of outside air introducing holes (17) located at the bottom of the recess are provided in the center of the bottom of the tank body (1), and the outside air introducing hole is provided at one end. A flow rate adjusting valve (19) is provided at the other end, and the other end is connected to the cleaning drain pipe (20). The above is one embodiment of the present invention. The procedure for using this example is as described in the section of "Operation", but the amount of water to be put in the tank body (1) is a little at the lower end of the shield plate (3) and the lower end of the outer cylinder (4). It is important that it be submerged in water. In this example, the shield plate (3) provided with a large number of small holes (3 ') is used, but the present invention is not limited to this, and a plate having a mesh portion may be used, for example. Further, depending on the situation, it is possible to further enhance the dust removal effect by using the present device in multiple stages. Manholes (8) and hatches (9) are provided for the purpose of cleaning the inside of the tank after work, and visual windows (10) (11)
Is provided to check the amount of water storage. Since this apparatus removes the humidified and agglomerated dust by the effect of centrifugal force, it can exert a great power especially for removing asbestos, rock wool, and the like. Further, since the outside air introducing hole (17) communicating with the cleaning drain pipe (20) having the flow rate adjusting valve (19) is provided,
The introduced outside air becomes bubbles and rises in the water, whereby the accumulated dust can be stirred, and the accumulated dust in the tank can be prevented from solidifying, and the dust can be easily discharged. Furthermore, since the amount of introduced outside air can be adjusted by the flow rate adjusting valve (19), it is possible to respond according to the amount and nature of dust. Also, although one end of the cleaning drain pipe (20) is closed, by connecting it to the dust discharge pump (14),
Dust can be easily discharged after the work is completed. The accumulated dust discharge pipe (12) provided in the lower part of the tank body of this example is provided to discharge dust during dust removal work, and is used by connecting to the dust discharge pump (14). is there. In this example, the outside air introduction hole (17) is provided at the bottom of the recess (18), but it is provided so as to make the bubble a certain size when the introduced outside air becomes bubbles and rises in the water. , The stirring effect is enhanced. The results of the dust removal test by this device are shown below. Test date: July 30, 1988 Test location: Garage on the premises of Union Service Co., Ltd. Removal target: Rock wool Removal method: Attach an attachment to the end of the flexible hose connected to the inflow pipe of this device, The rock wool sprayed on the wall was crushed and sucked. Used device: Shape 970 × 1500L Internal volume: 1.19m ³ Water storage: 300 Suction device: Negative pressure of about 200mmHg (vacuum pump) Suction air volume: 30m ³ / min Measurement result: Sampling amount 200 Rock wool concentration 0.001 fiber / cm ³ or more As described above, the superiority of the present invention could be confirmed.

【The invention's effect】

The present invention has the following effects. (A) Since the humidification and aggregation of dust by the vertical swirl flow and the collection utilizing the centrifugal force effect by the horizontal swirl flow are used, the range of collected particles and the dust removal effect can be increased. (B) The water is stored in the tank, and the water is scattered by the swirling flow of air to moisten the dust, so that the dust removing effect is large, and the device is simplified as compared with the conventional nozzle injection, and the running cost is reduced. It is also advantageous in terms. (C) Since the dust removed in the tank accumulates under the water surface, it can be discharged by a pump or the like, and the dust removal and the dust discharge at the bottom are performed in parallel without stopping the operation of this device. be able to. (D) Since the outside air that has flowed in through the outside air introduction hole provided at the bottom of the tank stirs the accumulated dust, it is possible to prevent the dust from solidifying and efficiently discharge the dust. As described above, according to the present invention, a dust removing effect is enhanced, a dust removing function and a dust discharging function can be simultaneously exhibited, and a relatively simple structure provides a dust removing apparatus that is also advantageous in terms of cost. It is profitable.

[Brief description of drawings]

Fig. 1 is a front view of the present invention. Fig. 2 is a right side view of the present invention. Fig. 3 is a sectional view taken along the line D-D. Fig. 4 is an explanatory view of a dust removing function. Fig. 5 is a front view of a shield plate. Connection pipe system diagram (1) …… Tank body, (2) …… Inflow pipe (3) …… Shield plate, (3 ′) …… Small hole (4) …… Outer cylinder, (5) …… Communication pipe (6) …… Exhaust pipe, (7) …… Water (8) …… Manhole, (9) …… Hatch (10) (11) …… Visual window, (12) …… Deposit dust exhaust pipe (13) …… Vacuum pump, (14) …… Dust discharge pump (15) …… Attachment (16) …… Flexible hose (17) …… Outside air introduction hole, (18) …… Concave (19) …… Flow rate control valve, (20) …… Cleaning drain pipe (A) …… Vortex chamber, (B) …… Collection chamber (C) …… Cyclone device

Claims (1)

[Claims] 1. A sealed tank body (1) having an inflow pipe (2) penetrating its wall surface so that the outlet is located obliquely to the bottom surface, and the tank body opposite to the outlet. A shield plate (3) having a large number of small holes (3 ') formed in the lower portion is inscribed and attached to the inner surface, and a conical inclined surface is provided in the middle of a cylindrical body having an opening below. An outer cylinder (4) with a narrower diameter is formed, and the outer cylinder is attached between the shield plate and the side surface of the tank main body by penetrating the upper wall surface of the tank main body and penetrating the upper surface of the outer cylinder to discharge the pipe. (6) is provided, the substantially U-shaped communication pipe (5) is provided so as to penetrate through the wall surface of the tank main body and near the outer peripheral portion of the upper portion of the outer cylinder, and the bowl-shaped recess (18) is provided at the bottom of the tank main body. When the outside air introduction hole (17) is provided, and the accumulated dust discharge pipe (12) is provided at an appropriate place under the tank. , The shielding plate and the external air introducing hole with the wet dust removing apparatus characterized by using the lower end of the outer tube and is positioned below the water surface.