JPS60256601A - Feed water unit - Google Patents

Abstract

PURPOSE:To obtain a feed water device suitable to be set on the roof of an office building or the like, by providing a plurality of inner vessels inside a resin made outer vessel while a bag structure, consisting of soft elastic material, in the inner vessel and partitioning it into two chambers. CONSTITUTION:Four inner vessels 21-24 are integrally formed with an outer vessel 1 in its inside. A material 3 of asbestos or the like for both insulating heat and preventing permeation of sunshine, with which a space between the external wall of said inner vessel and the internal wall of said outer vessel is packed, isolates heat from the outside and prevents the sunshine from permeating. The inner vessel 21-24, air-tightly constituting each inside, holds a bag structure 41-44, consisting of soft elastic material of rubber or the like, placing its opening part in the upper side to be fixedly attached by a cover 5 of each inner vessel.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water supply system using a diaphragm pressure tank.

The conventionally known hollow pressure tank water supply system with an automatic air replenishment device is widely used, but it is being replaced by the diaphragm pressure tank water supply system because it has the following drawbacks.

1) Air supply is required because the book is in direct contact with the enclosed air.

2) Water supply sanitation problems due to contact with water held in the outside air tank and corrosion on the inside of the tank.

3) Air handling valve if equipped with automatic air supply device.

Problems with the maintenance of accessories such as excess air exhaust valves and air reduction level detection devices.

4) Clouding phenomenon caused by high-pressure air being entrained in water.

5) It is necessary to ensure a sufficient amount of residual water to prevent air outflow at low water levels, and the available capacity is small.

6> The problem is that the sealed air will come out if water is used when the engine is stopped.

The above problems can be solved by using a diaphragm pressure tank.
0704 and those disclosed in Japanese Unexamined Patent Publication No. 57-44034 are becoming popular.

These systems replace the conventional elevated water tank by installing a bag made of flexible elastic material inside the pressure tank, filling gas between the bag and the tank, and pumping water into the bag from a pump installed at the bottom. This system stores water under pressure and supplies water according to the use of the water supply equipment in the building, but it has the following problems.

1) In general, a large capacity pressure tank is required depending on the water supply capacity used in construction trends, and the tank body and the bag inside the tank need to have a large capacity. However, it is difficult to manufacture the bag body by laminating rubber plates together, and the strength of this laminated portion is a problem and there is a risk of breakage at this part.

2) In addition, as the volume of the bag increases, the behavior of the bag relative to the can body due to fluctuations in the water supply load becomes irregular, causing the bags to overlap and, in some cases, cracking in a short period of time at the bend. Phenomena such as cracking occurs, or the water supply port at the bottom of the tank is blocked, making it impossible to supply water.

3) After installing a pressure tank in a building, if the water supply capacity changes due to changes to the water supply equipment in the building or the construction of an extension, it is difficult and costly to change the capacity of the tank according to the water supply capacity. If no changes are made, excessive loads will be placed on pumps and tanks, shortening their lifespans.

4) Since it is installed on the roof, if water is not used for a long time due to an abnormal drop in water temperature in the winter or heating of the tank by outside air in the summer, the user may feel uncomfortable due to water cutoff due to freezing or an increase in the water temperature in the tank.

The present invention provides a water supply unit that solves the above-mentioned problems, and its gist consists of an outer container made of resin and a plurality of inner containers provided inside the outer container through a heat-insulating and sunlight-preventing material. A bag body made of a flexible elastic material is provided inside the inner container to divide it into two parts, the upper chamber is filled with gas from the air supply part, and the lower chamber is filled with gas from the water supply port at the bottom of the inner container. The water supply unit is characterized in that liquid is allowed to enter and exit the water supply unit, and the water supply ports of the plurality of inner containers are communicated with each other via valves.

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an embodiment of the water supply unit of the present invention, and FIG. 3 shows an embodiment of the water supply unit in which unit containers are combined. In FIGS. 1 and 2, the outer container 1 is a substantially hollow rectangular parallelepiped, and four inner containers 21, 22, 23, and 24 each having a cylindrical cross section are formed integrally with the outer container 1 inside. A heat insulating and sunlight transmission preventing material 3 such as asbestos is packed between the outer wall of the inner container and the inner wall of the outer container to cut off the transmission of heat and sunlight to the outside. Inner container 21
．． The inside of each of the containers 22, 23, and 24 is configured to be airtight, and a bag 41, 42, 43, 44 made of a flexible elastic material such as rubber is sandwiched between the lid 5 of each inner container with the opening above the bag 41, 42, 43, 44. Fixed. The opening of each bag may be directed downward. The upper chamber side of the inner container, that is, inside the bags 41, 42, 43, 44, is filled with gas such as air through the air supply ports 6 provided in each lid 5, and each bag and the inside are filled with gas such as air. The lower chamber 8 side between the outer containers accommodates water sent from the water supply chamber 7 provided at the lower part of the inner container. The water supply holes 7 of each inner container are connected to communicate with each other by pipes 9 via valves 10, and one side has a system connection port 91. The water supply unit A having such a structure is entirely made of a resin molded product, and even though it has a large capacity, it is relatively light and easy to transport, and can be carried to the roof of a building, etc.

The above system connection port is connected to a water pump installed at the bottom of the building and a water supply pipe that communicates with the building's water supply equipment.

The capacity of this unit container water supply unit A can be easily reduced by closing the pipe 9 connecting the water supply hole 7 with a valve 10. Furthermore, as shown in Figure 3, the water supply capacity can be doubled by fixing the water supply unit B of the same unit container and the side wall of the outer container with bolts, etc., and connecting the water supply ports 7 of each inner container with piping 9. can.

In this way, since this water supply unit is constructed entirely from a unit container with one or more inner containers, or a combination thereof, it requires only smaller individual containers and bags compared to conventional pressure tanks. Therefore, in particular, the bag body can be manufactured by integral injection molding or the like, and there is no connecting bonded part on the bag body, which prevents abnormal overlapping deformation and the like, and greatly improves durability.

In addition, in this embodiment, the opening of the bag body 41, 42, 43, 44 is placed in the upper part and is clamped with M5, so that water is stored in the lower chamber 8, and the stored water is supplied to expand and contract. Even if the bag body is deformed in a natural manner, the deformation stress is not locally concentrated.

In addition, since the inner container is a resin molded product, there is no corrosion and fresh water can be secured. Furthermore, the friction phenomenon caused by the expansion and contraction of the bags between each of the bags 41, 42, 43, 44 and the inner container 21, 22, 23, 24 causes the surface of the inner container to overlap with the relatively smooth surface. Since this can be done easily, there is no wear of the bag body due to this friction, and the life of the bag body is improved.

In addition, between each of the outer container 1 and the inner container 21, 22, 23, and 24, a composite material heat insulating and sunlight transmission prevention material 3 made of plated asbestos is housed to cut off heat from the outside air. Therefore, it is possible to prevent changes in water temperature in winter and summer and the resulting deterioration of the bag body 41, 42, 43, 44, and to maintain normal operation and extend the life of the bag body without generating organic matter due to sunlight transmission. can.

In addition, even if the water supply capacity changes due to changes in the water supply equipment in the building or due to extensions or renovations after installation in the building, it is easy to combine unit containers and adjust the inner container, so pressure vessels can be adjusted according to the water supply capacity of the building. It is possible to maintain proper water supply operation without putting an unreasonable load on the water pumps and equipment installed at the bottom of the building. In addition, since the water supply unit of the unit container is made of resin molded product, it is much lighter than conventional steel pressure vessels, and when installed on the roof of a building, the strength of the roof is approximately equal to that at the maximum water supply capacity. It is sufficient to have the strength to withstand the weight of the roof, which is advantageous in terms of building design, and is also safe since there is no need to put an extra load on the roof during actual installation.

As explained above, the water supply unit of the present invention is extremely excellent as a water supply device when installed on the roof of a building, etc., and it is possible to perform appropriate water supply operation according to the water supply load, and always maintain a fresh water supply for a long period of time. It is possible.

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing an embodiment of the present invention, Fig. 2 is a sectional view of Ero from Fig. 1, and Fig. 3 is a sectional view of two unit containers A, B, etc. in Fig. 2.・Unit container, 1...Outer container, 21.22
．． 23.24...Inner container, 3...Insulating material, 41.
42.43.44...bag body, 5...lid, 6...air supply hole, 7...water supply port, 8...lower chamber, 9...piping agent patent attorney Takaishi Tachibana

Claims (1)

[Claims] 1. Consisting of an outer container made of resin and a plurality of inner containers provided inside the outer container with a heat insulating/sunlight-preventing material interposed therein, and inside the inner container there is a bag made of a flexible elastic material. Each of the plurality of inner vessels is divided into two parts by providing a double compartment, the upper chamber is filled with gas from the air supply part, the lower chamber is made to allow liquid to enter and exit from the water supply port at the bottom of the inner container. A water supply unit characterized in that the water supply ports of the two are connected to each other via a valve. 2. Scope of Claims A water supply unit 3 according to claim 1, wherein a plurality of the water supply units are combined, and the water supply ports of the plurality of units are communicated with each other via a valve. 1. The water supply unit according to item 1, wherein liquid is allowed to enter and exit the upper chamber through a water supply port of a lid attached to the inner container, and the water supply ports of each of the plurality of lids are connected to each other via a valve. A water supply unit characterized by communicating with each other and filling a lower chamber with gas from an air supply section at the bottom of an inner container.