KR930004326Y1 - Particle separation apparatus - Google Patents

Abstract

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Description

Particle separator

1 is a schematic view of a water treatment apparatus employing a particle separation device according to the present invention.

2 is a partial cross-sectional view of the particle separation device of the present invention.

FIG. 3 is a schematic diagram showing high density and low density flow in the particle separation device of FIG. 2. FIG.

* Explanation of symbols for main parts of the drawings

6: (particle) supply pipe 8: particle separation device

9 tubular member 10 support member

12: head (downward) 13: head annular

The present invention relates to a particle separation device, and more particularly to a separation device that can effectively separate particles having different specific gravity.

Today, the increase in population and the development of various industries has caused serious environmental pollution due to the large discharge of domestic sewage and industrial wastewater. Therefore, as water and sewage, industrial water, and wastewater from various industries are required to be treated to strict standards, an economical and effective water treatment apparatus for installation and operation while meeting such standards is required. As one of the water treatment apparatuses that can meet such demands, it is a tank having a cylindrical structure including a filtration layer mainly made of sand and a filter water reservoir, and a tank to separate sludge agglomerated with sand particles from sand under the filtration layer. There is known an upflow water treatment device composed of an air lift pump and a conveying pipe for conveying to a particle separator installed at the top.

In this type of water treatment system, the particles of the filtration layer, for example, sand, should be treated continuously without stopping the operation so that the filtration layer is not contaminated. A particle separator for separating and washing the particles is provided in the water treatment apparatus.

As an example of a particle separation device, the invention of “A device and method for separating particles having different densities” filed in Korean Patent Application No. 84-8407 (published on July 11, 1986 to 86-4654) is a thread. A cam having a plurality of cams having a plurality of cams is disposed in a tubular pipe having the same shape in the inner wall to form a zigzag flow channel at a distance between the rod and the inner wall of the pipe. It provides a particle separation device in which the contaminated dirt falls and the sand continues to settle and return to the filtration layer, while the separated dirt is suspended and discharged.

However, the particle separation apparatus of the present invention has a density flow in the flow channel between the rod and the tubular pipe, that is, a high density downflow including sand and an upflow including relatively light pollutants separated from the sand particles. As the flows intersect each other, the separation of the separated pollutants and sand particles is not effective, and contaminants of relatively large particles settle together with the sand to contaminate the filter layer.

The object of the present invention is to provide a particle separation device that can effectively separate particles having different specific gravity without mutual interference between high density including relatively large specific particles and low density containing relatively small specific particles. It is.

Particle separator according to the present invention, the tubular member having an inlet in communication with the feed pipe outlet of the separated particles, and the particles having a relatively high specific gravity in the mixture of particles having different specific gravity introduced through the inlet is the Particles having a relatively low specific gravity while guiding to be discharged through the outlet include a dense flow guide member disposed in the tubular member to be discharged through the inlet of the tubular member.

Hereinafter, the present invention through the embodiments shown in the accompanying drawings will be described in more detail.

1 shows an upflow water treatment apparatus employing the particle separator of the present invention. Raw water to be treated, including contaminants, for example, water and sewage, industrial water or industrial wastewater, is supplied from the outside via a raw water inlet pipe (1) and is provided mainly at the bottom of the tank 20 of the water treatment apparatus, mainly composed of a sand filter layer ( 3) It is discharged through the raw water distribution pipe (2) to the bottom. The raw water discharged to the bottom of the filtration layer 3 moves upward and passes through the filtration layer 3, whereby contaminants contained in the raw water are aggregated and filtered by the sand particles. The filtered water thus collected is collected on the filtration layer (3) and used to be discharged to the outside through the outlet (5) when the water level in the tank (20).

In the filtration layer 3, a treatment chemical, which is usually selected according to the type of contaminant contained in the raw water and the purpose of the treated filtration water, is injected. The treatment chemical is combined with the contaminant and aggregated to the sand particles of the filtration layer. The filtration of contaminants from raw water is effectively performed. However, even in the filter layer into which the treatment chemical is added, after the pollutant is aggregated to the sand particles to some extent, the pollutant filtration capacity of the filter layer 3 is lowered, so that the desired water treatment is not performed. Therefore, after a certain period of water treatment, contaminants should be separated and washed from the sand particles of the filtration layer. To this end, it includes a sand particle supply pipe (6), wash water reservoir (7) and particle separation device (8).

The supply pipe 6 has air at its upper end in communication with the wash water reservoir 7 and at its lower end buried in the bottom of the filtration layer 3 below the distribution pipe 2 and installed outside the tank of the water treatment apparatus (not shown). Compressed air is supplied to the lower end of the supply pipe 6 by an air lift pump. Compressed air supplied to the lower part of the feed pipe (6) is raised upward, at which time sand particles and water of the filtration layer (3) are sucked together into the feed pipe (6) due to the pressure difference between the feed pipe and the outside. Enter the installed wash water reservoir (7). In the transport of such sand particles, some of the contaminants condensed on the particles are separated by severe movement and collision of the particles. The supply pipe 6 is located in the tank 20 in the drawing, but may be installed externally as needed.

2 and 3 show the particle separation device 8 according to the present invention in detail. Particle separation apparatus 8 is shown in detail. The particle separation device 8 includes a plurality of heads 12 and 13 attached to the upper end of the feed pipe 6 to guide the high-density flow including the sand particles, and surrounds the heads with the upper end of the washing water reservoir 7. And a tubular member 9 in communication with the particle outlet at the bottom. The heads 12 and 13 are the heads 12 inclined downward radially outward as shown in FIG. 2, and the annular heads inclined upwards radially outward and larger than the diameter of the heads 12. 13). In addition, the downward accompaniment 12 is directly fixed to the outer side of the supply pipe 6, while the upward annular accompaniment 13 has a larger inner diameter than the supply pipe diameter so as to be spaced apart from the conveying pipe 6 and to support member 10. ) Is fixed to the supply pipe (6). The plurality of accompaniments 12 and the annular accompaniment 13 are alternately attached in such a manner that the annular accompaniment 13 is arranged at a predetermined interval under the accompaniment 12. The top of the feed pipe 6 protrudes into the wash water reservoir 7, while a cap member 11 is provided thereon, so that the water and sand particles transferred to the wash water reservoir 7 by the feed pipe 6 are separated from the cap member ( 11) the movement is limited so that the sand particles settle down to flow down to the downward head (12). The sand particles are again separated radially inward into the upward annulus 13, which is wider than the downward annulus 12, and is disposed at the bottom through a gap between the inner diameter of the annular annulus 13 and the supply pipe 6. It falls back to the head 12 of the downward direction. In this way, as shown by the solid arrows in the figure, the sand particles settle and collide with the accompanying panels 12 and 13, so that the remaining contaminants adhered thereto are completely separated and washed, and then through the open lower end of the tubular member 9. Falls into the filtration layer (3). In addition, the upper end of the cap member 11 is provided with an air outlet for communicating with the atmosphere to discharge the air supplied by the supply pipe (6) to the atmosphere.

A relatively low density upward flow, including light contaminant particles separated from the particles, occurs with a high density downward flow, including sand particles (indicated by dashed lines in the figure), It flows upward through the bottom and vertically moves along the inner surface of the tubular member 9 through the gap between the outer periphery of the annular plate 13 and the outer tubular member 9 and enters the wash water reservoir 7 and then pollutants. The particles are suspended and discharged through the discharge pipe 4 together with the wash water.

The downward and upward accompaniments 12 and 13 guide the high density flows including the sand particles and the low density flows including the pollutant particles into the respective flow paths so as not to cross each other, so that the high density flows and the low density flows do not interfere with each other. Separation of sand particles and contaminants condensed therefrom is effectively performed.

In addition, the alternating arrangement of the descending heads 12 and the upward annular heads 13 makes the flow of sand particles in the liquid zigzag, so that even if the length of the particle separation politics 8 is short, While the contaminant contaminants are separated and the residence time for sand particles can be cleaned, the separated contaminant particles are guided in a different direction from the flow of the sand particles, so that the tubular member 9 Since it flows into the washing water storage tank 7 in a straight upward flow on the inner wall and is discharged, it is possible to separate and wash the sand particles of the filter layer in which the contaminants are aggregated during the operation of the water treatment apparatus.

In the particle separation device 8 according to the present invention, a configuration in which a plurality of downward heads 12 and upwardly annular heads 13 are alternately arranged in an inner space of the tubular member 9 includes a filtration layer in the water treatment apparatus of the aforementioned embodiment. In addition to the separation and washing of the contaminated contaminants from the sand particles of (3), it can be applied to the technical field of separating particles having different specific gravity or sedimentation rate in the liquid, such as flotation, which beneficiates minerals from rock. Since the present invention is obvious, the scope of protection of the present invention is not limited only to the above-described embodiments, but only by the scope of the claims.

Claims (3)

A particle separator for separating particles having different specific gravity, the tubular member (9) having an inlet in communication with the outlet of the feed pipe (6) of the separated particles and having an outlet for discharging the separated particles, The density flow guide member 12 disposed in the inner space of the tubular member 9 for guiding the high density flow, which is a flow of particles having a relatively large specific gravity, and the low density flow, which is a flow of particles having a relatively small specific gravity, to each channel so as not to cross each other. And 13). According to claim 1, The density flow guide member is a plurality of heads 12 inclined downward in the radially outer side directly attached to the outer surface of the particle feed pipe (6) located in the center of the inner space of the tubular member (9), A radially outer side attached to the outer surface of the upper end portion of the particle delivery pipe 6 by the support member 10 includes a plurality of annular heads 13 which are inclined upwardly, wherein the head 12 and the annular head 13 are Particle separation device, characterized in that arranged alternately spaced at equal intervals. The inner diameter of the annular disk 13 is larger than the diameter of the particle feed pipe 6 and smaller than the diameter of the disk 12, and the outer diameter of the annular disk 13 is larger than the diameter of the disk 12. Only the inner surface of the tubular member 9 is spaced apart, and the high density flows down into the zigzag downward passage along the inclination of the surfaces of the head 12 and the annular head 13, while the low density flow is annular member. Particle separators, characterized in that each flow passage is formed so that the high-density flow and the low-density flow do not intersect along the bottom surface of the tubular member (9), gathered toward the inner surface of the tubular member (9) and discharged upward.