JP2537759B2 - Sewage removal device in hopper for sewer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage removal device in a hopper for sewerage, which removes sewage contained in settling sand and residue collected in a sand basin.

[0002]

2. Description of the Related Art As shown in FIG. 9, a sewer system draws sewer water from households into a sand basin 1, separates the sand in the sand basin 1, and separates the sand by a sand scouring machine 2. It collects in the hopper 3a of the equipment 3. On the other hand, in the sand basin 1, dust removal is performed by the dust remover 4 together with the sedimentation of the sand,
This is collected in the hopper 5a of the residue processing equipment 5. still,
A relay pumping station 7 is installed in the preceding stage of the sand basin 1, and the sand sediment and the residue are collected here and stored in the hoppers 3a and 5a.

Set sand collected in each hopper 3a, 5a,
The screen residue contains sewage, and the sand and screen residue are removed from the hopper 3
When stored in a and 5a, the sewage contained in the stored material leaks from the hopper gate port, causing harmful effects such as odor and pollution.

Conventionally, as an example of a mechanism for removing this dirty water, as shown in FIGS. 6 to 8, the VP pipes 6, 6 ... Bundled like a saw are attached to the corners of the hoppers 3a, 5a.
Only the sewage that permeates through the gap between the P pipes 6 and 6 is fed into the hopper 3
There is a structure in which water is collected and drained to the bottom drainage ports 3b and 5b of a and 5a.

When the insides of the hoppers 3a and 5a are filled with sand and residue, they are transported from the hoppers 3a and 5a and disposed of at the disposal site.

[0006]

However, since the sand and residue contain sludge-like fine particles, fibrous substances, etc., the gaps in the VP pipe 6 are clogged and the drainage effect is reduced. . In order to regenerate the drainage effect, it is necessary to frequently clean the gaps in the VP pipe 6, which makes maintenance and inspection difficult.

The object of the present invention is to separate sewage from sediments and residue by utilizing the property that sediments and residues containing sludge-like fine particles and fibrous substances tend to be lumpy. An object of the present invention is to provide a device for removing sewage contained in a hopper for sewerage.

[0008]

In order to achieve the above-mentioned object, a sewage removal device for sewage in a hopper for sewerage according to the present invention has a hopper, a water collecting tray, and a shielding plate, and is installed in at least a sand basin. In the sewage hopper-containing sewage removal device for sewerage, the sand basin is for separating and separating the sediment from the sewage water to prevent dust, and the hopper has an inlet at the top and an opening / closing at the bottom. It has a discharge port with a gate part for temporarily storing the settling sand and residue from the input port, and a water collecting tray is provided between the input port and the discharge port in the hopper. It collects sewage that has leached from the settling sand and residue in the hopper and discharges it to the outside of the hopper.The shield plate is directed from the top input port to the bottom discharge port in the hopper. It is installed in an inclined posture that leans forward and soaks from the sand and residue on the bottom side. A passage leading to the sewage in the water collecting tray and forms between the hopper inner wall.

Further, the shielding plate is arranged at a corner portion of the hopper or at a position facing the hopper.

Further, the hopper has a bottom discharge port equipped with a transport mechanism for transporting the settled sand and residue left inside the hopper when the opening / closing gate is opened.

[0011]

[Operation] The settled sand and residue stored in the hopper contain sludge-like fine particles, fibrous substances, etc., and are likely to be aggregated. This means that even if the sediment and residue are collected and supplied to the central part of the bottom of the hopper, they do not spread evenly over the entire bottom and are stored in a medium-high form, and the sand is partially deposited in the hopper. Also, it is possible to collect the sewage leached from the residue.

In view of the above, the present invention collects and stores sand and residue on the bottom of the hopper by means of a shielding plate, and collects the sewage leached from the sand and residue in the space between the hopper and the shielding plate. , The wastewater is discharged to the outside of the hopper.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.
1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof.

In the figure, the apparatus for removing sewage contained in the hopper for sewerage according to the present invention has a hopper 8, a water collecting tray 9 and a shield plate 10. The sand basin 1 or the sand basin 1 shown in FIG. And the relay pump station 7. At the sand basin 1 and the relay pumping station 7, it is necessary to collect the sand settled or the residue contained in the sewer water and dispose of them, as described above.

The hopper 8 has a charging port 8a at the top and a discharging port 8c at the bottom having an opening / closing gate 8b.
The settled sand or residue 11 from a is temporarily stored. Hereinafter, only the sedimentation will be described, but the same can be applied to the residue. The inner space of the hopper 8 of the illustrated embodiment has an inverted quadrangular pyramidal funnel shape, and the discharge port 8 is provided at the lowermost end thereof.
c is formed. In addition, the hopper 8 is provided with a transport mechanism 8e that carries out the settled sand and residue stored inside when the opening / closing gate portion 8b is opened to the outside of the hopper. Alternatively, the transport mechanism 8e may be removed and the gate portion 8b may be opened to directly discharge the sand and the like to the transport truck.

The water collecting tray 9 is provided on the side wall between the input port 8a and the discharge port 8c of the hopper 8, collects the dirty water 12 leached from the settling sand 11 in the hopper 8, and collects this.
It is discharged to the outside. The water collecting tray 9 of the illustrated embodiment has a gutter portion 9a in which a side wall of the hopper 8 is bent in a semicircular shape.
And a weir 9b closing one side of the gutter 9a. Overflowing sewage 12 beyond the height of the weir 9b flows into the gutter 9a and is discharged to the outside of the hopper through the gutter 9a. It has become so. A pipe 13 is connected to the gutter portion 9a.

The shield plate 10 is provided in the hopper 8 with an upper charging port 8
The passages L ₁ and L ₂ that are provided in an inclined posture inclining forward from a toward the bottom discharge port 8c and that guide the wastewater 12 leached from the bottom settling sand and residue to the water collecting tray 9 are provided on the inner wall of the hopper 8. It is formed between and. Shielding plate 10 of the illustrated embodiment
Are arranged in parallel with the four inclined side surfaces 8d forming the inverted quadrangular pyramid shape of the hopper 8, and the bottom edge 10a thereof projects obliquely from the height of the water collecting tray 9 downwardly, and the sand settling 11
Are accumulated in the central portion of the bottom of the hopper 8 so that the settling sand 11 on the bottom side of the hopper rises to a medium height, and the passages L ₁ and L ₂ for the dirty water 12 reaching the water collecting tray 9 are provided on the side surface (inner wall) of the hopper 8. It is secured between 8d.

Further, sewage leaking from the bottom of the hopper 8 is also received by the pipe 13 and drained.

In the embodiment, when the sand is stored in the hopper 8, the gate 8b is closed to close the discharge port 8c of the hopper 8. In this state, the sand in the relay pump station and the sand basin is conveyed by a belt conveyor or a jib crane. It is charged into the hopper 8 from the charging port 8a by a transport mechanism such as.

The settling sand 11 thrown into the hopper 8 travels along the shielding plate 10 and is gathered at the center of the bottom of the hopper 8.
As described above, since the sand set 11 has the property of becoming a lump,
The settling sand 11 on the bottom side of the hopper 8 does not spread evenly over the entire bottom surface, but rises in a middle-height shape.

The sewage 12 contained in the settling sand 11 is
Passages L ₁ and L ₂ secured between the shielding plate 10 and the hopper 8.
Soak in.

When the amount of settling sand 11 stored in the hopper 8 increases and the sewage 12 overflows over the weir 9b of the water collecting tray 9 and flows into the trough 9a, the sewage 12 travels along the trough 9a.
Is drained out of the hopper 8.

Further, the amount of wastewater 12 that does not reach the height of the water collecting tray 9 gradually permeates the settling sand 11, permeates from the bottom side of the hopper 8 and is drained from the pipe 13.

When the inside of the hopper 8 is filled with the sand sediment 11, the gate portion 8b is opened, and the sand sediment 11 is carried out by the carry-out mechanism 8e such as a belt conveyor.

In the embodiment shown in FIG. 1, the shield plate 10
4 are provided corresponding to the four inclined side surfaces forming the inverted quadrangular pyramid shape of the hopper 8, but as shown in FIG.
Two sheets may be provided so as to correspond to the side surfaces, and a shielding plate 10 may be provided at the corner portion C of the hopper 8 as shown in FIG.
Further, the hopper 8 has an inverted quadrangular pyramid funnel shape, but may have an inverted polygonal pyramid shape or an inverted conical shape.

[0026]

As described above, according to the present invention, by utilizing the property that the sand settled sand residue is aggregated, the sand settled sand residue is piled up on the bottom of the hopper while being accumulated, and the sand settled is permeated. Since the collected sewage is overflowed and collected in the water collection tray and drained, it is possible to separate the sewage from sedimentation etc. in a maintenance-free state without causing clogging as in the conventional case.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a plan view showing an installation example of a shielding plate according to the present invention.

FIG. 5 is a plan view showing an installation example of a shielding plate according to the present invention.

FIG. 6 is a plan view showing a conventional example.

FIG. 7 is a side view showing a conventional example.

FIG. 8 is a diagram showing a discharge port of a conventional example.

FIG. 9 is a flowchart showing treatment of sewer water.

[Explanation of symbols]

 8 Hopper 8a Input port 8b Gate part 8c Discharge port 8e Carrying out mechanism 9 Water collection tray 10 Shielding plate 11 Settling sand, Screen residue 12 Waste water

Front page continuation (72) Inventor Seiichi Ueda 2-11-3 Ginza, Chuo-ku, Tokyo Nikki Plantech Co., Ltd.

Claims (3)

(57) [Claims] 1. A sewage treatment device for sewage contained in a hopper for sewerage, which comprises at least a hopper, a water collecting tray, and a shielding plate, wherein the sand basin sediments and separates sediment from sewer water. The hopper has an inlet at the top and an outlet with a gate for opening and closing at the bottom, and the settling sand and residue from the inlet is temporarily removed. The water collecting tray is provided between the input port and the discharge port in the hopper, collects the sewage leached from the settling sand and the residue in the hopper, and collects it from the outside of the hopper. The shielding plate is installed in an inclined posture in which the shielding plate is inclined forward from the upper inlet to the bottom outlet in the hopper, and collects the sewage leached from the sedimentation and residue on the bottom side. Characterized by forming a passage leading to the water tray between the inner wall of the hopper Sewer hoppers in containing sewage removal apparatus. 2. The sewage removal device in the hopper for sewerage according to claim 1, wherein the shielding plate is arranged at a corner portion of the hopper or at a position facing the hopper. 3. The hopper has a bottom discharge port equipped with a transport mechanism for carrying out the settled sand and residue stored inside the hopper when the opening / closing gate is opened. The sewage removal device in the hopper for sewerage according to claim 1.