JPS6015800Y2 - Ground-mounted water metering device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ground-mounted water metering device, and relates to a freeze prevention structure for the water meter body.

Conventionally, water meters were buried underground, but underground type ones can be buried in the ring, making it difficult to locate them, pebbles or the like can get stuck in the lid, making it difficult to open and close the lid, and the workability of meter reading can become difficult. In recent years, ground-mounted water meters have come to be used due to poor water quality.

However, the biggest drawback of ground-mounted water meters is the problem of freezing in the winter.

In order to solve this problem, there is a method of filling the water meter housing with a heat insulating material that covers the entire water meter, and also covering the rising wood pipe with a heat insulating material, but if the outside air drops below 0°C for a long time, If the temperature inside the water meter drops below 0°C, it will freeze, and the insulation will not be effective enough to prevent freezing.

For this reason, it may be possible to wrap a heater around a water meter or a rising wooden pipe to keep it warm, but this would require running costs such as electricity, high equipment costs, and the risk of electrical leakage.

The present invention has been developed in view of the above-mentioned problems, and it is designed to provide a connection between the main body of the water meter, which is supported in communication between a pair of wooden pipes raised above the ground, and the above-ground part of the wooden pipes on the downstream side. A temperature-sensitive automatic drain valve that opens when the water temperature drops to near the freezing temperature is inserted, and the water in the meter body is removed just before the water in the meter body freezes, allowing water above the freezing temperature to flow from the ground. This is to prevent freezing inside the water meter body.

Next, the structure of an embodiment of the present invention will be explained with reference to the accompanying drawings FIGS. 1 and 2.

Reference numeral 1 denotes a water meter housing, which consists of a synthetic resin container 2 and a synthetic resin lid 3 screwed onto the container at one end so as to be openable and closable. It is supported by synthetic resin hollow supports 5 and 6.

Furthermore, water pipes 7 and 8 raised above the ground from underground are inserted into the hollow supports 5 and 6, respectively, by penetrating the base plate 4.

Reference numeral 9 denotes a water meter main body, which is housed in the casing 1 and connected to the water stop valve 11 housed in the casing 1 through a socket 10 on the upstream side. elbow 12
The upper end of one of the water pipes 7 is connected via the water pipe 7.

Furthermore, a connecting pipe 13 is connected to the downstream side of the water meter main body 9, and the upper end of the other water pipe 8 is connected to the downstream side of this connecting pipe 13 via an elbow 14. A water supply port 15 for supplying water is provided on the side.

Reference numeral 16 denotes a temperature-sensitive automatic drain valve, and the upper end of a drain pipe 19 constituting the valve chamber 18 is screwed to the English-Japanese 17 that protrudes downward from the middle of the connecting pipe 13, and the lower part is connected to the through hole of the container 2. 2
It protrudes below 0.

This drain pipe 19 has an end plate 22 formed at the upper end thereof with several through holes 21, and the upper surface of the end plate 22 is covered with a mesh plate 23.

Further, a bottom body 25 having a small hole 24 in the center is screwed to the lower end of the drain pipe 19.

The valve chamber B houses an axially expandable valve body 26 that is filled with a fluid that contracts when the temperature drops to around 0°C and expands when the temperature goes above 0°C.

In the valve body 26, a support shaft 28 of a projecting body 27 protruding from one end is fitted into the center of the end plate 22, and a spring 30 supported on the bottom body 25 is engaged with a spring receiver 29 fitted in the middle. An elastic body 3 made of rubber or the like is attached to the tip of the protruding body 31 which is fitted together and protrudes from the other end.
2 is provided protrudingly facing the small hole 24 of the bottom body 25.

Furthermore, the housing 1 is filled with a heat insulating material 33 made of foamed polyurethane resin, and the water meter body 9 and the water stop valve 11 are
, the socket 10, the elbows 12, 14, the connecting pipe 13, and the drain pipe 19, and the support 5.6 is covered with a wooden pipe 7.8, respectively.
Insulated tubes 34 and 35 made of foamed polyurethane resin are fitted.

Next, the operation of the above embodiment will be explained.

When water is used, water is supplied from the upstream water pipe 7 to the water stop valve 11, the water meter body 9, the connecting pipe 13, and the downstream water pipe 8 to the user side.

In this case, even if the outside air drops to 0°C or lower, the inside of the water meter body 9 will not freeze due to the passage of water at 0°C or higher from the wood pipes underground.

Next, when water is not used at night or the like, water remains in the water meter main body 9, the water stop valve 11, the connecting pipe 13, etc.

As the outside temperature drops, the temperature of the water stagnant also gradually drops.

Water is also introduced into the valve chamber 18 through the through hole 21, and since the valve body 26 is immersed in water, when the temperature of the water drops to near 0°C, the fluid in the valve body 26 contracts. When the valve body 26 shrinks, the elastic body 32 that had been blocking the small hole 24 is pulled up and opens the small hole 24, and the bottom part that has accumulated in the connecting pipe 13, water meter body 9, and water stop valve 11 is removed. The water is expelled to the outside through the small hole 24, and warm underground water flows through the water meter body 9 and valve seat 18 via the water pipe 7 and water stop valve 11 on the upstream side.

Then, the water temperature in the valve chamber 18 becomes 0° C. or higher, the fluid in the valve body 26 expands, the valve body 26 expands, and the elastic body 32 at the tip of the valve body 26 expands.
closes the small hole 24 and the outflow of water is stopped.

In this way, when the outside air temperature is 0° C. or lower, the above operations are repeated to prevent freezing.

Next, FIG. 3 shows another embodiment, in which a drain valve 16 is attached to the connection between the connecting pipe 13 and the water pipe 8.

The upper end of the water pipe 8 and the connecting pipe 13 are connected by a cheese 36, and a drain pipe 19 is connected to one end of the cheese 36, and this drain pipe 19 projects horizontally outward from the casing 1, and has a downward drain port at the tip. 37 is installed.

The internal structure of the drain valve 16 is similar to the previous embodiment.

Next, FIG. 4 shows another embodiment, in which a drain valve 16 is provided in the middle of the woodwind on the downstream side.

A cheese 36 is inserted and connected in the middle of the above-ground part of this water pipe 8, and a drain pipe 19 is connected to this cheese 38 and is horizontally protruded outward from the support 6, with a downward drain port 37 attached to the tip. ing.

The internal structure of the drain valve 16 is similar to the embodiment shown in FIG.

The other structures and functions of the embodiment shown in FIGS. 3 and 4 are the same as those of the embodiment shown in FIGS. 1 and 2 described above.

According to the present invention, when the water temperature drops to near the freezing temperature, the water meter main body is connected and supported between a pair of wooden pipes raised above the ground, and the above-ground part of the wooden pipes on the downstream side. A temperature-sensitive automatic drain valve that opens is installed, so when the water temperature drops to near the freezing temperature, the temperature-sensitive automatic drain valve opens, removing the low-temperature water that has accumulated in the water meter body, and draining water above the freezing temperature from underground. Since the water dispenser is allowed to flow through the water dispenser, damage to the dispenser body due to freezing of water accumulated inside the dispenser body can be prevented.

Furthermore, when the water temperature rises above the freezing temperature, the temperature-sensitive automatic drain valve closes and stops draining, which is effective in saving water.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a device showing an example of the implementation of the present invention, Fig. 2 is an enlarged longitudinal sectional side view of the same drain valve portion, Figs.
The figures are partially cutaway side views of devices showing other embodiments. 7. Death...Water pipe, 9...Water meter body, 1
6...Temperature-sensitive automatic drain valve.

Claims (1)

[Scope of utility model registration request] The temperature of the water inserted between the water meter body, which is connected and supported between a pair of wooden pipes raised above the ground, and the above-ground portion of the wood pipes on the downstream side of this water meter body, has fallen to near freezing temperature. A ground-mounted water metering device characterized by a temperature-sensitive automatic drain valve that opens when the valve is opened.