JP3159356B2 - Dust reduction device using swirling flow - Google Patents

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 removing apparatus of this type, there is one as shown in FIGS. In the apparatus shown in FIG. 1, a dust remover having a screen wound in a cylindrical shape is suspended in a separation tank, sewage is introduced into the dust remover to capture dust, and the dust is removed from the bottom side of the separation tank. I have to.

[0003] In the apparatus shown in FIG. 2, a dust remover having a screen wound in a cylindrical shape is erected in a separation tank, and sewage is supplied to the outer side of the dust remover while being swirled to separate the dust remove water. It is'll be taking out Unishi from the top surface of the tank.

[0004]

However, in the conventional apparatus shown in FIG. 1, the sewage supplied into the separation tank flows from the dust remover to the take-out section, and the flow velocity is high in the main flow section, and the screen is large. There is a drawback that dust passes through, and a screen other than that part becomes a dead space, and there is a drawback that the function of dust removal is not sufficiently performed.

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

[0006]

SUMMARY OF THE INVENTION The present invention can solve the above-mentioned problems, and the gist of the present invention is that the tangential direction of the cylindrical side wall is placed on the upper part of the side wall of the cylindrical separation tank. In the separation tank, a cylindrical dust remover having a screen stretched around the periphery thereof is suspended in the separation tank, and the dust remover is further suspended in the separation tank. the side walls of the separation tank located on the side of the lower bottom portion of the dust removing device, which opened the outlet of dust water, dust
Hang the bottom of the container down to the side of the dust removal water outlet,
Outlet below the screen around the dust collector located on the side of
And the bottom and the bottom are blind.

[0007]

The dust removing apparatus according to the present invention is constructed as described above, and the sewage supplied to the separation tank from the inflow pipe flows down inside the dust remover while turning, and the dust is removed by the screen of the dust remover. captured by the dust water you can and score preparative <br/> out from the bottom of the outlet of the separating tank.

In other words, according to the present invention, the wastewater containing dust to be supplied flows down along the inner surface of the screen of the dust remover, and during this time, only the water is separated by flowing down the dust contained in the inner surface of the screen. It is possible to make efficient use of the entire screen while preventing clogging of the screen with dust.

When dust is deposited on the bottom of the dust remover by such a separating 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 at the bottom of the dust remover where the dust accumulates is made blind, the operation can be continued and the accumulated dust can be prevented from flowing to the outlet, and continuous operation for a long time can be performed. A possible 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 sectional view of a dust removing apparatus according to the present invention, wherein reference numeral 1 denotes a cylindrical separation tank, 2 denotes an inflow pipe of wastewater containing dust, and an upper wall portion of the separation tank 1. Tangentially. Reference numeral 3 denotes a dust remover suspended in the separation tank 1, which is configured by winding a screen 3 a into a cylindrical shape, and having a ring-shaped collar 3 b on the upper edge thereof on a support edge 1 a on the inner surface of the separation tank 1. It is suspended, and its bottom 3c is hung so as to be located at the outlet 4 of the dust removal water. Reference numeral 5 denotes a detachably provided lid, and reference numeral 6 denotes an air vent.

The apparatus according to the present invention is constructed as described above, and the sewage supplied from the inflow pipe 2 forms a swirling flow along the inner surface of the separation tank 1 and enters the dust remover 3 where the waste water is supplied. Also, it flows down while turning along the screen 3a. During this time, dust in the sewage is captured by the screen 3a, and the water from which dust has been removed can be taken out from the outlet 4.

In the dust removing action in the dust remover 3, since the sewage flows in a tangential direction on the inner surface of the screen 3a as a swirling flow, dust contained in the sewage is reduced to a screen like a conventional one (see FIG. 1). There is no pressing against the screen 3a, so that the screen 3a is not easily clogged. In addition, it is possible to reduce garbage that is missed.

That is, as shown in FIG. 1, when the sewage simply flows down in the dust remover 3, the sewage flows through the screen 3a.
Although the dust in the sewage was pressed against the surface of the screen 3a and clogged at the same time as the dust flowing in the direction perpendicular to the screen 3a, according to the apparatus according to the present invention, the dust according to the present invention was shown in FIGS. As shown in (1), the dust that adheres to the screen 3a is swept away by the swirling flow and is deposited on the bottom 3c. The screen surface is clean, a large amount of filtered water can be obtained, and the dust can be efficiently captured. It is. In this regard, a dust trapping test was performed using the conventional dust remover as shown in FIG. 5 and the dust remover according to the present invention as shown in FIG. 6, and the amount of dust in the dust water passed through the dust remover according to the present invention was determined. Was 1/13 of the amount of dust collected by the conventional dust remover.

In the dusty water obtained in this manner, dust does not pass through the eyes of the screen 3a because it is pushed out of the screen 3a, and the dust in the dusty water is fine. And the waste is separated as a whole, so that the dust can be efficiently separated. This operation state is shown in comparison with FIGS. That is, in FIG. 7, the inflowing sewage is deviated, and there is a fast flow portion and a slow flow portion. The dust S is clogged in the screen 3a or the large dust S is pushed out. In FIG. The sewage flowing through the sewage uniformly flows, and the sewage passing through has an extremely small particle size.

The dust S separated from the sewage as described above is deposited on the bottom 3c of the dust remover 3, and when a predetermined amount of the dust is collected, the dust remover 3 is lifted up and discarded. According to the present invention shown in FIG. 10 for the accumulation of dust S, the amount of dust S flowing into the dust removal water is reduced by making the portion of the separation tank 1 facing the outlet 4 blind. It can be further reduced.

That is, in the dust remover 3 having the structure shown in FIG. 9, when the amount of the dust S settled on the bottom 3c increases, the dust is pressed against the screen 3a by the swirling flow to cause a miss, but as shown in FIG. When the screen at the bottom 3c is blind, the dust S deposited on this portion does not pass through. As shown in FIG.
As a result of a test in which the bottom 3c of the dust remover was blind, the amount of the garbage S that passed through was approximately 1 / th of the amount of the dust removed by the dust remover 3 as shown in FIG.
It was 2. The length of the blind portion of the screen 3a of the dust remover 3 used in the above test was set to 1/3 of the height. Further, since the dust S deposited on the bottom 3c of the dust remover 3 has been found to be conical in the above test, it is considered effective to form the bottom plate of the dust remover in a bowl shape.

[0017]

As is apparent from the above description, the dust removing apparatus according to the present invention has a smaller size than the conventional dust removing apparatus.
Sewage is received on the entire surface of the screen of the dust remover, and the dust can be separated efficiently, and the dust is separated while the screen surface is updated by the swirling flow of the wastewater.
It is possible to eliminate all the conventional difficulties of this type of dust removing device, such as preventing dust from being pushed into the eyes of the screen, preventing clogging of the screen and preventing large dust from being missed.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a conventional dust removing apparatus of this type.

FIG. 2 is a longitudinal sectional view of another example of this type of conventional dust remover.

FIG. 3 is a schematic longitudinal sectional view of the dust removing apparatus according to the present invention.

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

FIG. 5 is a longitudinal sectional view of a dust remover for explaining a conventional dust separator in the dust remover.

FIG. 6 is a longitudinal sectional view of the dust remover for explaining the dust separating action of the dust remover according to the present invention.

FIG. 7 is a vertical cross-sectional view of a dust remover for explaining the state of separation of dust in the conventional dust remover.

FIG. 8 is a longitudinal sectional view of the dust remover showing a dust separation state of the dust remover according to the present invention.

FIG. 9 is a schematic longitudinal sectional view of a conventional dust removing device.

FIG. 10 shows a garbage accumulation state of the dust removing apparatus according to the present invention.
It is a longitudinal sectional view showing a.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Separation tank 2 Inflow pipe 3 Dust remover 3a Screen3c bottom  4 Exit

Claims (1)

(57) [Claims] 1. An inflow pipe 2 is opened in an upper part of a side wall of a cylindrical separation tank 1 in a tangential direction of the cylindrical side wall, and is provided in the separation tank 1 below an opening of the inflow pipe 2. A cylindrical dust remover 3 having a screen 3a stretched around the periphery of the dust remover 3 is suspended. Further, a side wall of the separation tank 1 located on the lower bottom side of the dust remover 3 has an outlet 4 for dust removal water. opened a
In the dust removing device, the bottom of the dust remover 3 is taken out of the dust removing water.
Dust to the side of 4 and dust removal located on the side of the outlet 4
Of the container 3 facing the outlet 4 below the peripheral screen 3a
Swirl flow characterized by blind position and bottom 3c
The dust remover used.