JPH0115919Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a discharge curved pipe that allows discharge water from a submersible pump to flow into the discharge pipe.

For example, in a sewer system, a relay pump facility is provided in the middle of a buried route of a sewer pipe, and a sewer relay pump unit has recently been used as this relay pump facility. This relay pump unit has a manhole buried in the middle of the buried route of the sewer pipe, connects the upstream sewer pipe to this manhole as an inflow pipe, and directs the sewage that flows into the manhole from this inflow pipe into the water installed in the manhole. The sewage is pumped up and discharged to the downstream sewer pipe, which is an outflow pipe connected above the inflow pipe, and the water level of the sewage is raised in the middle of the sewer pipe, which is buried over a long distance, and the sewage is drained. It was designed to promote the distribution of.

The sewer relay pump unit will be explained with reference to FIGS. 1 and 2. In the figure, reference numeral 1 indicates a frame block of a manhole buried underground, and this frame block 1 is made of concrete and has a cylindrical shape with a bottom. Such a frame block 1 is placed on a foundation 2 so that the upper opening of the frame block 1 is approximately equal to the ground surface. A metal receiving frame 3 is fixed to the edge of the upper opening of the main body block 1, and a disc-shaped lid 4 is placed on this receiving frame 3 to close the upper opening of the main body block 1. ing.

An upstream sewer pipe 7, which is an inflow pipe, is connected to the side peripheral wall of the main body block 1 so as to communicate with the inside of the main body block 1, so that sewage flows into the main body block 1 from the sewer pipe 7. There is. A mounting base 8 is provided at the bottom of the main body block 1, and a discharge pipe 9 is connected to the discharge bent pipe 9 on this mounting base 8.
It is attached via a. The discharge pipe 9 has an automatic attachment/detachment flange 12 at its end, a check valve 13 and an on-off valve 14 interposed in its middle part, and is connected to a downstream sewer pipe 15 which is an outflow pipe. The sewer pipe 15 is located above the sewer pipe 7 and extends outside through the side peripheral wall of the frame block 1. Further, in the figure, reference numeral 10 denotes a guide column, which is attached to the discharge bent pipe 9a, and the upper part of the guide column 10 is fixed to the front receiving frame 3 and reaches the upper opening of the frame block 1. Furthermore, numeral 11 in the figure is a water level gauge, and this water level gauge 11 includes a protection tube 16 formed of a porous tube and a water level detector 1.
7 and 17.

As shown in FIG. 2, two sets of the guide columns 10 are arranged in parallel, and each guide column 10 is provided with a submersible pump 20 via a guide fitting 19 so as to be movable up and down. And submersible pump 2
The discharge port 0 is connected to the automatic attachment/detachment flange 12 when the submersible pump 20 is lowered to the lower end of the guide column 10.
It is now connected to the These submersible pump 20, discharge bent pipe 9a, check valve 13, on-off valve 14
Two units are installed each, and the discharge pipe 9 is connected to the on-off valve 1.
4 are collected on the downstream side and connected to the sewer pipe 15. Therefore, one of the submersible pumps 20 is used regularly and the other is used as a backup, so that when the regular submersible pump 20 becomes inoperable, the backup submersible pump 20 is used. It's summery.

However, in such a sewerage relay pump unit, it is necessary to provide two discharge bent pipes 9a, two check valves 13, and two on-off valves 14, and these things occupy space within the frame unit 1, and the submersible pump 20
There was a problem in that it was difficult to make it larger.

This problem occurs because the discharge bent pipe 9a connects one submersible pump 20 and the discharge pipe 9.

The technical problem to be solved by the present invention is to connect a plurality of submersible pumps and one discharge pipe through a bent discharge pipe.

The technical means taken to solve this technical problem is to have a plurality of curved joint pipes to which each discharge port of a plurality of submersible pumps is joined, and to connect these joint pipes to one end of a single collecting pipe. A valve body is provided at the boundary between the collecting pipe and each joint pipe to be opened and closed by water flow from a submersible pump, and the other end of the collecting pipe is connected to a discharge pipe.

For this reason, each discharge port of a plurality of submersible pumps is connected to a joint pipe, and the joint pipes are collected into a single collecting pipe, thereby connecting a plurality of submersible pumps and one discharge pipe.

Therefore, the above technical problem is solved, and the plurality of submersible pumps and one discharge pipe are connected by a bent discharge pipe.

In this invention, a valve body is provided at the boundary between the joint pipe and the collecting pipe, which opens and closes using the water flow from the submersible pump, so that even if the operation of any submersible pump is stopped, water will not flow back. It can be done.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 3 to 6. In addition, Figures 1 and 2 in the figure
Items with the same reference numerals as those in the figures indicate the same or corresponding parts.

A discharge bent pipe 30 is attached to the mounting base 8 in FIG. 3, and a guide column 10 is fixed to this discharge pipe 30. The discharge bent pipe 30 has two opposing curved joint pipes 31a, 31b and a collecting pipe 32 that collects both the joint pipes 31a, 31b, and an automatic attachment/detachment flange is provided at the ends of the joint pipes 31a, 31b. 12 is fixed to the collecting pipe 32, and a flange 31a is formed at the end of the collecting pipe 32.

Submersible pumps 20a and 20b are supported on the guide column 10 via guide fittings 19 so as to be able to rise and fall freely, and a discharge port 33 is connected to the automatic attachment/detachment flange 12 at the lower end position of the guide column 10. The pumps 20a, 20b are arranged facing each other as shown in FIG.

As shown in FIG. 5, a valve seat 3 is provided at the boundary between the joint pipes 31a, 31b of the discharge bent pipe 30 and the collecting pipe 32.
4 is formed, and valve bodies 35a and 35b that are in close contact with the valve seat 34 are rotatably supported by a shaft 36. A stopper 37 is provided on the inner surface of the collecting pipe 32.
is provided protrudingly, and this stopper 37 closes the valve body 35.
The rotation range of a and 35b is limited.

As shown in FIG. 6, in such valve bodies 35a and 35b, the valve body 35b is pivotally supported at the center in the longitudinal direction of a shaft 36, and the valve body 35a is pivotally supported at both ends of the shaft 36.

In this embodiment, when the submersible pump 20b, which is a commonly used submersible pump, is operated, the valve body 35b is opened by the water flow from the submersible pump 20b, as shown by the solid line in FIG.
is in close contact with the valve seat 34 and closes. Next, when the regular submersible pump 20b becomes inoperable and the emergency submersible pump 20a is started, the valve body 35a,
35b rotates as shown by the two-dot chain line in FIG.
The valve body 35a operates to open, and the valve body 35b operates to close.

It should be noted that the present invention is not limited to the above-described embodiments, and can be applied not only to sewerage relay pump units, but also to all types of submersible pumps installed in pits. In addition, the joint pipes 31a and 31b are connected to the submersible pump 20a,
It is not limited to the case where the submersible pumps 20b are joined facing each other, but the angle between the two submersible pumps may be narrowed. In this case, the area of the upper opening of the frame block 1 can be reduced.

[Brief explanation of the drawing]

1 and 2 are views showing a sewer relay pump unit, FIG. 1 is a longitudinal sectional view, FIG. 2 is a plan view, and FIGS. 3 to 6 are views showing embodiments of the present invention. FIG. 3 is a side view of the entire device, FIG. 4 is a plan view thereof, FIG. 5 is a vertical sectional view of the discharge curved pipe 30, and FIG. 6 is a cross-sectional view taken from FIG. 5. 7...Discharge pipe, 20a, 20b...Submersible pump, 30...Discharge curved pipe, 31a, 31b...Joint pipe, 32...Collecting pipe, 35a, 35b...Valve body.

Claims (1)

[Scope of utility model registration request] It has a plurality of curved joint pipes to which the respective discharge ports of a plurality of submersible pumps are joined, and these joint pipes are gathered at one end of a single collecting pipe, and the boundary between this collecting pipe and each joint pipe is 1. A bent discharge pipe for a submersible pump, characterized in that a valve body is provided which opens and closes according to water flow from the submersible pump, and the other end of the collecting pipe is connected to a discharge pipe.