JPH031114Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is a suitable scale for water supply pipes that is mainly used for removing scale from the walls of water supply pipes in high-rise buildings, so-called buildings and condominiums, and for preventing the production of scale. This invention relates to a removal device.

(Prior art) In the above-mentioned high-rise buildings, tap water is usually stored in an underground water tank and pumped to an elevated tank on the roof.
Water is supplied to various places from this elevated tank through water supply pipes installed at various points, but the main water pipes from the outside to the water receiving tank are oxidized due to the addition of chlorine for sterilization. The produced iron oxide is peeled off by the water stream and contained in fine powder, and when this fine powder flows into the water supply pipe and sticks to the pipe wall,
Using this as a nucleus, salts crystallize and form a scale. Although this scale build-up is not considered harmful to drinking water, it is necessary to remove the scale because the inner diameter of the pipe gradually decreases, reducing the water supply capacity and further corroding the pipe. The most common method is to stop the water supply and mechanically scrape off the scale that has already adhered, or to wash it off with chemicals, but there are other ways to gradually remove the scale that has adhered and to suppress the formation of scale. As a new method, permanent magnets are installed in the pipes, and when water passes through a strong magnetic field, water molecules and ions of inorganic substances in the water are magnetically induced and oxidized, resulting in carbon dioxide, the main component of scale. It is known to utilize a magnetic treatment effect that removes calcium and iron hydroxide by precipitating calcium carbonate as crystals and dispersing iron hydroxide in colloidal form. In this magnetic method, the water to be further treated is prepared in advance from a special rock, that is, a porous rock whose main components are alkali feldspar and quartz, and whose main constituents are silicic anhydride and aluminum oxide. It has been found that by passing water through a layer of rock called "Maifanseki", it is possible to improve efficiency by keeping the change in magnetic susceptibility of water almost constant due to fluctuations in the flow velocity as it passes between the magnetic poles of a magnet. A device has been developed that interconnects a tank containing a magnet and a tank incorporating a magnet.

(Problem that the invention aims to solve) However, installing the above-mentioned layer tank and magnet tank separately requires a large amount of installation space, and requires labor such as piping work. Water is only in contact with a small portion of the layer being immersed, so if water contains a lot of inorganic substances, which is a characteristic of this layer, it will elute the missing components and remove the excess components. The effect of adsorption to adjust water quality is not fully utilized, and the inorganic substances that should be magnetized become uneven, which has the disadvantage that the water that enters the magnet tank is not activated by magnetism. .

(Means for solving the problem) In order to solve this problem, the entire device should be constructed so that the layer tank and the magnet tank are integrally formed, and the water flow passing through the layer always contacts the entire layer at the same time. This idea was developed focusing on the above points.

(Embodiment) An embodiment of the device of this invention will be described with reference to the drawings.The entire structure consists of an outer box 1 made of stainless steel and shaped like a closed cylindrical container, in which cylindrical weir plates 2, 3 and an inner cylinder 4 are concentrically provided. The inner cylinder 4 has its top projecting outward, and is formed by arranging a large number of plate-shaped permanent magnets in two stages, upper and lower, with magnets 5 juxtaposed inside the inner cylinder 4, and the lower end is connected to the outer box 1. It protrudes outward from the water outlet 8 and is connected to the water outlet 8. Between the inner surface of the outer box 1 and the sheath plate 2, and between the sheath plate 3 and the inner cylinder 4, layers 7, 7 made of crushed stones of the above-mentioned rock are placed and accommodated via ring-shaped perforated plates 6, 6. There is. Note that 9 is an automatic air vent valve provided on the top surface of the outer box, 10 is a drain valve provided on the bottom of the outer box, and 11 is a water inlet.

(Function) The above device is usually installed by connecting the water inlet 11 to an elevated water tank on the roof of a building and connecting the water outlet 8 to a water supply pipe. The water flowing in from the water inlet 11 is sent to the outer box 1.
It rises through the layer 7 between the inner surface and the weir plate 2, descends between the weir plates 2 and 3, and forms the weir plate 3 and the inner cylinder 4.
The water rises through the layer 7 between the holes, passes over the upper edge of the inner cylinder 4, enters the inner cylinder 4, and heads from the water outlet 8 to the water supply pipe.
Since the water surface height is lower than that of the elevated water tank, the inside of the outer box 1 is always filled with water, and this water is constantly subjected to magnetic treatment by the magnet 5. In this example, the magnet has a magnetic flux density of 3800 to 4100 Gauss, and the weight of the rock layer is 300 kg.

(Effects) With the above-described structure, the water flowing in through the water inlet 11 passes through the layers 7, 7 sandwiched between the narrow passages partitioned by the weir plates 2, 3.
Since the inflow water reaches the upper end of the inner cylinder 4 while fully contacting the inner cylinder 4, and evenly flows into the inner cylinder 4 over the upper edge thereof and comes into contact with the magnet 5, the inflow water can always be uniformly subjected to magnetic treatment.

In this way, this invention differs from the one in which only layers and magnets are provided, in addition to being able to reliably remove scale, the entire device can be made compact and easy to install.
There are many advantages.

[Brief explanation of drawings]

The drawings show an embodiment of the invention, with FIG. 1 being a longitudinal cross-sectional view and FIG. 2 being a cross-sectional view taken along line A--A in FIG. In the figure, 1 is the outer box, 2 and 3 are the weir plates, 4 is the inner cylinder,
5 is a magnet, 7 is a layer, 8 is a water outlet, and 11 is a water inlet.

Claims (1)

[Scope of utility model registration request] Inside the outer box 1, which is in the form of a closed cylindrical container and has a water inlet 11 at the lower part of the periphery, a porous material whose main constituents are anhydrous silicic acid and aluminum oxide, and an inorganic material depending on the water quality are placed along the inner periphery of the outer box. A cylindrical layer 7 made of rocks that elutes and adsorbs substances is provided, a magnet 5 is installed at the upper end of the center of the outer box, and the lower end is a water outlet 8 that protrudes laterally from the outer box 1. A water supply pipe scale removal device comprising a protruding inner cylinder 4.