JPH0718179B2 - Up and down bidirectional water supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an up-and-down bidirectional water supply device for buildings such as offices and condominiums having three or more floors.

(Prior Art) Conventionally, in a building on the second floor or lower, water is generally supplied to each floor by a water main system.

As typical water supply systems for buildings on the third floor and above, i) downward water supply system (elevated water tank system, gravity system) and ii) upward water supply system (pressure tank system, pressure system) are adopted.

In the former case, as shown in FIG. 3, a low-rise water receiving tank (a) and a water pump (b) connected to the water receiving tank (a).
, An elevated water tank (c) is installed on the roof, and the discharge side of the pumping pump (b) is connected to the elevated water tank (c),
And connecting the pumping pipe (e) with the check valve (d) interposed,
The bottom of the elevated water tank (c) is configured by connecting a vertical water supply pipe (f), and when the water level of the elevated water tank (c) is low, the elevated water tank is pumped by the pump (b) through the pumping pipe (e). (C)
Supply water to.

When the water level in the water tank (c) rises, the pump (b) is stopped, and water is supplied from the elevated water tank (c) to the faucets (g) on each floor via the water supply vertical pipe (f) by gravity.

Thus, the check valve (d) is open during the operation of the pump (b) and closed during the stop of the pump (b) to prevent the pumping pipe (e) from falling. In the latter, as shown in FIG. 4, a water receiving tank (h), a pressure pump (i), and a pressure tank (j) are installed in the lower layer, and the pressure tank (j) and the same tank (j) are connected, and The inside of the water supply pipe (l) whose upper end is connected to the end chamber (k) is constantly pressurized, and water is supplied to the faucet (m) on each floor through the water supply pipe (l). When the water pressure in the pipeline falls below a certain pressure, the pump (i) is activated and the pressure (j) on each floor
Water is supplied through the water supply pipe (1).

(Problems to be solved by the invention) However, the former requires two main vertical pipes, a pumping pipe and a water supply pipe, and lacks workability and ease of maintenance.
Large space for pipe shafts. Also, because all the water used in the building is pumped once on the roof, it is used.
It is a waste of energy.

In the latter case, water cannot be supplied at the time of power failure, failure, and maintenance, and water hammer prevention measures such as the above-mentioned eachimber are required. Further, the capacity of the water receiving tank is larger than that of the elevated water tank, pressure control is required to install the pressure tank, the equipment cost increases, and maintenance becomes complicated.

As described above, according to the conventional device, initial cost, maintenance cost, and running cost increase.

The present invention has been proposed in view of the above-mentioned problems of the prior art. It is possible to supply water even when there is a power failure or a pump failure, and only one main vertical pipe is used to simplify the configuration and pump water to an elevated water tank. The point is to provide both upper and lower water supply devices that can supply water to each floor.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the vertical bidirectional water supply device according to the present invention vertically penetrates a building with an elevated water tank as well as a water tank provided in each of the low-rise part and the rooftop. , And a water supply vertical pipe connected to the elevated water tank via an upward pipe protruding from the roof, a pumping pump interposed between the water supply vertical pipe and the water receiving tank, and the elevated water tank bottom and water supply It consists of a top water supply pipe connected between a vertical pipe, and a check valve for blocking the water supply pipe line is installed on the discharge side of the pump when the pump is stopped, and the top water supply pipe is A non-return valve that closes the pipeline during the pump operation is provided.

(Operation) Since the present invention is configured as described above, when water is used on each floor and the water level in the elevated water tank drops below a certain level, the pumping pump is activated and the water in the water receiving tank is supplied to the vertical water supply tank. The water is pumped to the elevated water tank through the pipe and the extension, and during this time, water can be used on each floor through the water supply vertical pipe.

At this time, the check valve of the top water supply pipe connected to the bottom of the elevated water tank is closed to prevent backflow of water in the elevated water tank.

Then, when water is pumped by the pump and the elevated water tank reaches a high water level, the pump is stopped, and water is supplied from the elevated water tank to the water supply vertical pipe through gravity from the top water supply pipe to the respective floors from the same water supply vertical pipe. Water is supplied.

At this time, the check valve on the discharge side of the pumping pump is closed to prevent backflow to the receiving tank, drop of water in the vertical pipe of the water supply, and mixing of air.

(Examples) The present invention will be described below with reference to illustrated examples.

An elevated water tank (2) is arranged along with a water tank (1) on the lower floors and the roof of the building (A), and a water supply vertical pipe (3) is arranged to penetrate each floor of the building (A). An extension pipe (4) extending above the rooftop is extended to the top of the pipe (3), and the tip of the extension pipe (4) is opened into the elevated water tank (2).

A pumping pump (5) is interposed between the water receiving tank (1) and the water supply vertical pipe (3), and a check valve (6) is provided at a discharge port connected to the water supply vertical pipe (3) of the pump (5). Is installed.

Between the bottom of the elevated water tank (2) and the top pipe (4),
A top water supply pipe (8) with a check valve (7) interposed is connected.

In the figure, (9) are faucets arranged on each floor and connected to the water supply vertical pipe (3).

Since the illustrated embodiment is configured as described above, water of each floor is used, and when the water level in the elevated water tank (2) drops below a predetermined water level, the pumping pump (5) is activated to supply water. Water is pumped through the vertical pipe (3) and stored in the elevated water tank (2) through the upright pipe (4). On the other hand, water is supplied to the faucets (9) on each floor from the water supply vertical pipe (3), and water can be used on each floor.

At this time, the check valve (7) of the top water supply pipe (8) connected to the lower portion of the elevated water tank (2) is closed to prevent backflow into the elevated water tank (2) (see FIG. 1). Water is pumped by the pump (5), the elevated water tank (2) reaches a high water level, and when the water level exceeds a predetermined level, the water pump of the elevated water tank (5) is stopped, and the water in the elevated water tank (2) is supplied by the top water supply pipe (8), The water supply vertical pipe (3) is dropped and water is supplied to the faucets (9) on each floor. (See FIG. 2) At this time, the check valve (6) on the discharge side of the pumping pump (5) was closed, and backflow to the water receiving tank (1), falling water in the water supply vertical pipe (3), and mixing of air were prevented. To be prevented.

If the water pressure in the water supply vertical pipe (3) is detected by a sensor and the pumping pump (5) is controlled by an inverter or the like, further pressure fluctuation can be added.

The present invention can be applied not only to buildings with three or more floors but also to buildings such as factories with high floors in a one-story building.

(Effects of the Invention) According to the present invention, as described above, an elevated water tank as well as a water tank provided in each of the low-rise portion and the rooftop are vertically connected to the upper pipe extending through the building and protruding from the rooftop. Connected by the installed water supply vertical pipe, water is stored in the elevated water tank by a pump pump installed between the same water supply vertical pipe and the water receiving tank, during which water is supplied to each floor from the water supply vertical pipe, Further, when the elevated water tank reaches a high water level, the pumping pump is stopped, and water is supplied from the elevated water tank to the top water supply pipe and the water supply vertical pipe connected to the bottom of the elevated water tank, and water is supplied to each floor from the same water supply vertical pipe. Thus, since the water is supplied to both the upper and lower sides, the pumping pipe and the water supplying pipe are provided by a single pipe, which improves the workability and ease of maintenance and saves the shaft space.

Further, according to the present invention, since the water is directly supplied during the operation of the pump, the energy-saving operation becomes effective and the running cost is reduced.

In addition, water can be supplied even when there is a power failure, failure, or maintenance if residual water is secured in the elevated water tank.

Furthermore, since the upright pipe at the upper end of the water supply vertical pipe is opened in the elevated water tank and communicates with the atmospheric pressure, the water hammer pressure is released to prevent the water hammer and reduce the pressure fluctuation.

Furthermore, according to the present invention, installation of a pressure tank and pressure control are not required, and the initial cost maintenance fee is reduced.

Further, a check valve provided on the discharge side of the pumping pump prevents backflow into the receiving tank, and a check valve provided in the top water supply pipe allows water to always flow from top to bottom. It is prevented from becoming accumulated water or dead water.

[Brief description of drawings]

1 and 2 are vertical cross-sectional views showing a state in which the pumping pump is operating and is stopped in an embodiment of the bidirectional water supply apparatus according to the present invention, and FIGS. It is a longitudinal cross-sectional view which shows an upward water supply apparatus as well as an upward water supply apparatus. (1) …… Water tank, (2) …… Elevated water tank, (3) …… Water supply vertical pipe, (4) …… Upper pipe, (5) …… Pump pump,
(6) …… Check valve, (7) …… Check valve, (8) …… Top water pipe.

Claims (1)

[Claims] 1. A water supply vertical pipe that is connected to the elevated water tank through an elevated water tank as well as a water receiving tank disposed in the low-rise part and a rooftop, and an extension pipe that penetrates through the building and projects from the rooftop. When,
A pumping pump installed between the same water supply vertical pipe and the water receiving tank, and a top water supply pipe connected between the bottom of the elevated water tank and the water supplying vertical pipe, and on the discharge side of the pumping pump. A check valve for blocking the water supply line while the pump is stopped is provided, and a check valve for blocking the same line is also provided at the top water supply pipe during the operation of the pump. Up and down bidirectional water supply device.