JPH0559762A - Structure of soil water basin unit - Google Patents

Abstract

PURPOSE:To make execution of installation work easy, and to prevent soil water from scattering out of a soil water basin. CONSTITUTION:Soil water from a plurality of houses is collected through soil pipes 11 to a soil water basin 16. The soil water collected in the soil water basin 16 is sucked by opening a vacuum valve 30 and the sucked soil water is let flow to a vacuum sewer pipe 13. In a soil water basin unit constructed as mentioned above, a soil water catch basin 20 is installed between the soil pipe 11 and the soil water basin 16 for collecting temporarily the soil water from the soil pipe 11. An outlet of the soil water catch basin 20 is connected to a position near the bottom of the soil water basin 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a wastewater treatment unit used in a vacuum sewer system, which is one of the methods for collecting wastewater from a plurality of houses.

[0002]

2. Description of the Related Art Conventionally, as this type of sewage masu unit, a sewage masu unit having a structure shown in FIG. 3 has been provided (Japanese Patent Laid-Open No. 3-76945).

The wastewater treatment unit U shown in FIG. 3 is generally used in the vacuum sewer system shown in FIG. Sewage drained from a plurality of houses 31 is directly collected into underground sewage basin 2 through natural flow-type sewage pipe 1, and when a certain amount of sewage is accumulated in sewage basin 2, vacuum valve 3 opens and suction pipe The sewage is sucked from 4 and the sucked sewage is flown to the vacuum sewer pipe 5. The sewage flowing into the vacuum sewage pipe 5 is sent to a water collection tank at a vacuum pump station provided in that area, and from there, it is collected at a sewage treatment plant by a pressure pump and treated.

By the way, in the conventional sewage masu unit shown in FIG. 3, when installing it, after the sewage masu 2 of the unit is installed in the ground, the side wall of the sewage masu 2 is opened at the site and each The sewage pipe 1 from the home is connected to the sewage pipe 2. Generally, if there is only one vacuum valve, up to 5 household sewage pipes will be connected to the sewage sump unit. Moreover, since the location of the sewage pipe 2 differs depending on the pipe distance and direction of the sewage pipe 1 from each household, the connection of the sewage pipe 1 and the opening of the sewage pipe 2 should be made on-site. I am trying to connect.

[0005]

However, in the above-mentioned conventional sewage masu unit, as described above, the connection part of the sewage pipe 1 and the side wall opening part of the sewage masu 2 are put together at the site for connection work. Therefore, there is a problem that the construction becomes complicated and the quality is deteriorated. In particular, the opening work of the opening portion of the dirty water masu 2 requires a special technique and a jig, and the number of connection ports of the dirty water pipe 1 is large, which makes the construction difficult. Furthermore, when the position of the sewage pipe 1 is shallower than the surface of the earth, the momentum when the sewage flows into the sewage masu 2 is strong, and the sewage may be widely scattered in the sewage masu 2. In this case, the scattered sewage will be sewage. There was also a problem that it accumulates near the bottom of No. 2 and causes a bad odor.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a structure of a sewage mist unit which is easy to construct and does not scatter sewage in the sewage mist. ..

[0007]

[Means for Solving the Problems] Therefore, in the invention according to claim 1, in a plurality of houses, the sewage is collected through a sewage pipe into a sewage mister, and the sewage collected in the sewage mist is sucked by opening a vacuum valve, In addition, in the structure of the sewage masu unit that causes the inhaled sewage to flow into the vacuum sewer pipe, it is necessary to interpose a sewage collection tank that temporarily collects sewage from the sewage pipe between the sewage pipe and the sewage masu. It was a means.

According to the second aspect of the invention, the outlet of the sewage collecting tank is connected to the vicinity of the bottom of the sewage tank.

[0009]

In the invention according to claim 1, the sewage collecting chamber temporarily collects the sewage from the sewage pipe so that the side wall opening portion of the sewage collecting chamber collects the sewage. There is only one place to connect the outlet of masu water. Further, since the position of the side wall opening portion of the sewage mast is determined by the relative positional relationship with the sewage collecting sac, it can be fixed at a specific position, and the opening work can be performed during its manufacturing.

Further, in the invention of claim 2, by connecting the outlet of the sewage collecting basin to the vicinity of the bottom of the sewage mast, the momentum of the sewage flowing into the sewage mast is weakened and the sewage may be scattered into the sewage masu. Is less.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In the figure, the symbol U indicates a wastewater treatment unit according to the present invention.

The sewage masu unit U is a hollow sewage masu unit body 10 installed underground, and a sewage mist 20 for temporarily collecting sewage discharged from each household on the ground through an underground sewage pipe 11. Sewage masu unit body 10
The vacuum valve 30 sucks up the sewage collected in the sewage tank 16 into the suction pipe 12 and flows it to the vacuum sewer pipe 13.

The sewage masu unit body 10 has a cylindrical side wall 10a made of concrete or the like so as to withstand surrounding earth pressure, and an upper lid 10b made of concrete or the like for closing upper and lower openings of the side wall 10a. It is a hollow skeleton composed of the bottom lid 10c. The inside of the main body 10 of such a sewage mist is a valve for installing equipment such as a vacuum valve 30 by means of a partition plate 14 provided almost in the center.
It is divided into 5 and sewage masu 16 vertically. At the bottom of the lower sewage basin 16, a fixed amount of sewage sump 17 for collecting the sewage collected inside is formed by a mortar 18. The upper lid 10b has an opening 1 for working.
0d is provided, and the heat insulating plate 4 is provided in this opening 10d.
0 is provided, and a lid 41 such as an iron plate is provided above the opening 10d.

The sewage collecting tank 20 includes a straight pipe 21 which is located near the side wall 10a of the sewage mist unit body 10 and vertically buried in the ground, and a curved pipe connected to the lower end of the straight pipe 21. 22 is a cylindrical member made of synthetic resin or the like. The tip of the curved pipe 22 is connected to a hole 19 provided at a lower portion of the side wall 10a of the sewage mist unit main body 10 and above the sewage sump 17, and the inside of the sewage collection basin 20 and the sewage mist 16 Communicates with the interior of the. The downstream end of the sewage pipe 11 from each household is connected to the side wall of the straight pipe 21 of the sewage water collection basin 20, and the upper end opening of the sewage water collection basin 20 is closed by a lid 43.

The suction pipe 12 and a sensor pipe 12a for detecting a certain amount of waste water accumulated in the waste water sump 17 are connected to the upstream side of the vacuum valve 30 installed in the valve stem 15. The lower end opening of the suction pipe 12 reaches the vicinity of the bottom lid 10c of the waste water sump 17. In addition,
The internal structures of the vacuum valve 30 and the sensor tube 12a are, for example,
The structure described in WO90 / 503128 is used. The vacuum waste water pipe 13 is connected to the downstream side of the vacuum valve 30. A water collecting tank (not shown) at a vacuum pumping station is provided downstream of the vacuum sewer pipe 13, and the waste water is finally collected in this water collecting tank.

Next, the operation of the sewage treatment unit U having the above structure will be described.

Once the sewage flows from the sewage pipe 11 into the sewage collection tank 20, the momentum is weakened and the sewage flows from the sewage collection tank 20 through the hole 19 of the sewage collection tank 16 into the sewage sump 17 immediately below. When the sewage accumulated in the sewage sump 17 reaches a predetermined amount, the sensor pipe 12a detects this and the vacuum valve 30 is activated and opened by this detection data. When the vacuum valve 30 is opened, the vacuum sewer pipe 13 in a vacuum state and the suction pipe 12 communicate with each other, and the waste water accumulated in the waste water sump 17 is sucked up by the suction pipe 12 and flowed to the vacuum sewer pipe 13, and the downstream It is sent to the vacuum pumping station.

According to this embodiment, the following effects can be obtained.

(B) In addition to the unit main body 10 for sewage,
Since the sewage collecting tank 20 for collecting sewage once is provided, the sewage inlet of the sewage tank 16 can be provided at only one place instead of a large number of places as in the past. Therefore, the side wall 10a of the sewage masu unit body 10 made of concrete or the like needs only one opening, and the connection work to the sewage masu unit body 10 collects the sewage.
All that is required is to connect the tip of the bent tube 22 of the above to the hole 19. Moreover, since the position of the hole 19 provided on the side wall 10a of the sewage mist unit body 10 is determined only by the relative positional relationship with the sewage collection basin 20, the position of the hole 19 can be fixed in advance, and the sewage mist unit body 10 Incorporating an opening step into the manufacturing step of (1), it is possible to eliminate the need to open the sewage mist unit body 10 on site. Therefore, the sewage pipe 1
It is possible to rationalize on-site construction in addition to eliminating the need for on-site alignment of the first connection part.

(B) Since the sewage collection basin 20 does not require the pressure resistance performance of the sewage sewage unit main body 10, it can be sufficiently manufactured with synthetic resin, FRP, etc., and the opening work of the hole for connecting the sewage pipe 11 becomes easy. At the same time, the connection work of the dirty water pipe 11 becomes easy. Further, since the sewage pipe 11 is connected to the sewage collecting basin 20 in this manner, it is possible to connect a large number of places along the circumferential direction and the axial direction of the straight pipe 21 of the sewage collecting sac 20 and thus the flexibility is high. In addition, the unit body 1 will be used for sewage even if additional sewage pipes 11 are installed after construction.
Expansion work can be done regardless of 0.

(C) Since the lower end of the sewage collecting basin 20 is connected to a position corresponding to the bottom level of the unit body 10 so that the sewage flowing into the sewage basin 16 will flow down the upper surface of the sewage sump 17. The sewage can be weakened to prevent its scattering.

FIG. 2 shows another embodiment of the present invention.
This is an example in which the sewage collection mast 20 is installed in the ground while lying sideways. Also in this embodiment, the same effect as described above can be obtained.

[0023]

[Effects of the Invention] As described above, according to the structure of the sewage masu unit of the present invention, the sewage masu unit is arranged between the sewage masu and the sewage pipe. 1 side wall with an opening to connect the sewage outlet of
It suffices to provide it only at the place, and the opening portion of the sewage mist can be provided in advance to eliminate the need for the on-site opening work, thereby facilitating the on-site construction. Further, since the sewage pipe is connected to the sewage collection tank, it is possible to cope with the expansion of the sewage pipe regardless of the main body of the sewage masu unit. Further, the height of the inflow port of the sewage into the sewage basin can be located near the bottom of the sewage sewage, which has the effect of preventing the sewage from scattering.

[Brief description of drawings]

FIG. 1 is an installation state diagram of a wastewater treatment unit showing an embodiment of the present invention.

FIG. 2 is an installation state diagram of a wastewater treatment unit showing another embodiment of the present invention.

FIG. 3 is a diagram showing an installation state of a conventional wastewater treatment unit.

FIG. 4 is a conceptual perspective view showing a vacuum sewer system.

[Explanation of symbols] 10 sewage masu unit main body, 11 sewage pipe, 12 suction pipe, 13 vacuum sewer pipe, 20 sewage collection, 30 vacuum valve, 31 house, U sewage masu unit.

Claims (2)

[Claims] 1. A sewage masu unit that collects sewage from a plurality of houses into a sewage pipe through a sewage pipe, inhales the sewage collected in the sewage masu by opening a vacuum valve, and flows the sucked sewage to a vacuum sewer pipe. In the structure, a structure of a sewage masu unit, characterized in that a sewage collection tank for once collecting sewage from the sewage pipe is interposed between the sewage pipe and the sewage masu. 2. The structure of a sewage masu unit, characterized in that the outlet of the sewage masu is connected near the bottom of the sewage masu.