JPH08141326A - Dust removing device using swirling flow - Google Patents

Abstract

PURPOSE: To provide a dust removing device of high dust removing efficiency which swirls and flows soil water containing dust along the screen inner face of a cylindrical dust removing machine. CONSTITUTION: A soil water inflow pipe 2 is opened in the tangential direction of an upper wide wall of a cylindrical separation tank 1, and a dust removing machine 3 with a screen 3a spread on a peripheral section below the opening of the inflow pipe 2 is hung on, and a water outlet 4 for dust removing water is formed on a lower side wall of the separation tank 1. Drain flows as a swirling flow along the inner face of the dust removing machine 3 to remove the dust, and the dust-removing water can be taken out from the water outlet 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a dust removing device used for separating dust such as hair contained in domestic wastewater discharged from general households.

[0002]

2. Description of the Related Art As a conventional dust remover of this type, there is one shown in FIGS. In the case of FIG. 1, a dust eliminator 3 having a screen wound in a cylindrical shape is suspended in a separation tank 1 and sewage is introduced into the dust eliminator to capture dust, and the dust removal water is placed on the bottom side of the separation tank 1. I try to take it out from.

Further, in the structure shown in FIG. 2, a dust remover 3 having a screen wound in a cylindrical shape is erected in the separation tank 1, and sewage is supplied to the outside of the dust remover while swirling the dust remover. Is taken out from the upper surface of the separation tank 1.

[0004]

However, in the conventional apparatus shown in FIG. 1, the sewage supplied into the separation tank 1 flows from the dust remover 2 toward the take-out section, and the main flow section has a high flow velocity, so that the screen is There is a problem that large dust particles pass through, and the screen other than that part becomes a dead space, and there is a problem that the function of removing dust is not fulfilled sufficiently.

Further, in the conventional apparatus shown in FIG. 2, the drainage turns into a swirling flow to remove dust, and the entire screen can be effectively used, but it takes time to treat the separated dust.

[0006]

The present invention can solve the above-mentioned problems, and the gist of the present invention is to provide a tangential direction to the upper side wall of a cylindrical separation tank. The opening of the inflow pipe toward, and in the separation tank, a cylindrical dust remover, which is positioned below the opening of the inflow pipe and has a screen stretched around the periphery, is suspended. On the side wall of the separation tank located on the side of the bottom of
This is an opening for the dust removal water.

[0007]

The dust remover according to the present invention is constructed as described above, and the sewage supplied from the inflow pipe to the separation tank flows down in the dust remover while swirling, and dust is removed by the screen of the dust remover. The captured dedusted water can be taken out from the lower outlet of the separation tank.

That is, according to the present invention, the sewage containing the supplied dust flows down while flowing along the inner surface of the screen of the dust remover, while flowing down the dust contained in the inner surface of the screen to separate only water. In addition, it is possible to prevent the clogging of the screen from being clogged with dust and to make effective use of the entire screen for efficient separation.

When dust is piled up on the bottom of the dust remover during such a separation operation, the dust remover may be pulled up from the separation tank and discarded, and the operation is extremely simple. At this time, if the screen on the peripheral wall of the bottom of the dust remover on which dust is accumulated is made blind, it is possible to prevent the accumulated dust to flow to the outlet for continuous operation, and to continue for a long time. It is possible to operate, and more efficient dust removal operation can be performed. Hereinafter, the present invention will be specifically described with reference to the drawings.

[0010]

FIG. 3 is a cross-sectional view of a dust removing apparatus according to the present invention, in which reference numeral 1 is a cylindrical separation tank, 2 is an inflow pipe for wastewater containing dust, and an upper wall portion of the separation tank 1 is shown. It is attached in the tangential direction. Reference numeral 3 denotes a dust remover suspended in the separation tank 1, which is configured by winding a screen 3a in a cylindrical shape, and a ring-shaped brim 3b at an upper edge thereof is provided on a support edge 1a on an inner surface of the separation tank 1. It is suspended, and its bottom 3c is hung so as to be located at the portion 4 of the dust removal water outlet. Reference numeral 5 is a detachably provided lid, and 6 is an air vent.

The apparatus according to the present invention is configured as described above, and the dirty water supplied from the inflow pipe 2 becomes a swirling flow along the inner surface of the separating tank 1 and enters the dust remover 3 to remove the dust remover. Even within 3, the water flows down while swirling along the screen 3a. Then, during this time, dust in the dirty water is captured by the screen 3a, and the dust-removed water can be taken out from the outlet 4.

In the dust removing operation in the dust remover 3, since the sewage turns into a swirling flow in the tangential direction on the inner surface of the screen 3a, the dust contained in the sewage is the same as the conventional one (see FIG. 1). Since it is not pressed against 3a, the screen is unlikely to be clogged. In addition, the dust that gets out of sight can also be reduced.

That is, as shown in FIG. 1, in the case where sewage simply flows down in the dust remover 3, the sewage is absorbed by the screen 3a.
Since the dust flows in a direction perpendicular to the screen, dust in the dirty water is pressed against the screen 3a to be clogged, and at the same time, there are many dusts that are skipped. However, according to the device according to the present invention, the dust in FIGS. As shown in Fig. 5, the dust that is attached to the screen 3a is swept away by the swirling flow and is deposited on the bottom, so that the screen surface is clean and a large amount of filtered water can be obtained, and dust can be efficiently captured. is there. Regarding this point, when a dust catching test was performed using a conventional dust remover as shown in FIG. 5 and a dust remover according to the present invention as shown in FIG. 6, the amount of dust in the dust removing water after passing through the dust remover according to the present invention Was 1/13 of the amount of dust collected by the conventional dust remover.

In the dust-removed water thus obtained, dust does not pass through the eyes of the screen because the dust does not pass through the dust-removed water, and the dust is evenly distributed over the entire surface of the screen 3a. Since it flows and separates as a whole, dust can be separated efficiently. This operating state is shown in comparison with FIG. 7 and FIG. That is,
In FIG. 7, inflowing sewage is unevenly distributed, and there are a fast flow portion and a slow flow portion, and dust S is clogged in the screen 3a,
The large dust particles S are pushed out, and in FIG. 8, the swirling water swirling on the screen surface uniformly flows, and the wastewater passing through has a very small particle size.

Further, as described above, the dust S separated from the wastewater is deposited on the bottom of the dust remover 3, and when a predetermined amount is accumulated, the dust remover 3 is pulled up and discarded. As shown in FIG. 10, the amount of dust S flowing out into the dust removal water can be further reduced by making the portion of the separation tank 1 facing the outlet 4 blind as shown in FIG.

That is, in the dust remover 3 having the structure shown in FIG. 9, when the amount of dust S deposited on the bottom increases, the dust S is pressed against the screen by the swirling flow to cause blind spots.
If the screen at the bottom of the dust remover 3 is left blind as shown in FIG. 3, the dust S accumulated in this portion will not get out of sight. As shown in FIG. 10, the bottom of the dust remover 3 was tested as a blind shape, and as a result, the amount of dust S skipped was found in FIG.
The dust removal amount of the dust remover 3 was about 1/2. The length of the blind portion 3 of the screen of the dust remover 3 used in the above test was ⅓ of its height. Further, in the above-mentioned test, it was found that the dust S accumulated on the bottom of the dust remover 3 has a conical shape, and therefore it is considered effective to form the bottom plate of the dust remover into a bowl shape.

[0017]

As is apparent from the above description, the dust remover according to the present invention is
Since the wastewater can be received on the entire screen of the dust remover to efficiently separate the dust, the dust is separated while the screen surface is updated by the swirling flow of the wastewater,
The dust can be prevented from being pushed into the eyes of the screen, clogging of the screen can be prevented, and at the same time, large particles of dust cannot be missed.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a conventional dust remover of this type.

FIG. 2 is a vertical cross-sectional view of another example of the conventional dust remover of this type.

FIG. 3 is a schematic vertical sectional view of a dust remover according to the present invention.

4 is a cross-sectional view taken along the line AA in FIG.

FIG. 5 is a vertical cross-sectional view of a dust remover, which is an explanatory view of a conventional dust separating device in the dust remover.

FIG. 6 is a vertical cross-sectional view of a dust remover, which illustrates the separating action of dust in the dust remover according to the present invention.

FIG. 7 is a vertical cross-sectional view of the dust remover, which illustrates the separated state of dust in the conventional dust remover.

FIG. 8 is a vertical cross-sectional view of a dust remover showing a separated state of dust of the dust remover according to the present invention.

FIG. 9 is a schematic vertical cross-sectional view of a dust remover according to the present invention.

FIG. 10 is a vertical cross-sectional view of another example of the dust remover according to the present invention.

[Explanation of symbols]

 1 Separation tank 2 Inflow pipe 3 Dust remover 3a Screen 4 Outlet

Claims (2)

[Claims] 1. An inflow pipe 2 is opened in the upper part of the side wall of a cylindrical separation tank 1 in the tangential direction of the cylindrical side wall, and in the separation tank 1 below the opening of the inflow pipe 2. A cylindrical dust remover 3 having a screen 3a stretched around the periphery of the dust remover 4 is suspended on the side wall of the separation tank 1 located on the side of the lower bottom of the dust remover 3. A dust removal device using a swirl flow. 2. The bottom part of the dust remover 3 according to claim 1 is hung down to the side of the dust removal water outlet 4, and the peripheral screen 3a of the dust remover 3 located on the side of the dust removal outlet 4 is made blind. Dust removal device using swirling flow.