KR200237785Y1 - water meter preventing break with freeze - Google Patents

Abstract

The present invention relates to a water meter for measuring the amount of water used, and specifically, the glass part 150 for protecting the instrument panel 140 of the meter by volume expansion due to the solidification of water remaining in the water meter in winter when the temperature drops sharply. The present invention relates to a technique for preventing damage, for this purpose, the present invention is a hollow cylindrical shape, the upper surface is completely opened, the upper inner surface is formed with a fastening portion 210 and the lower surface of the shaft hole 220 is formed only An inner side of the air chamber 200 having a bent portion 230; A support plate 310 is formed therein to allow the instrument panel 140 and a plurality of gears (not shown) to be installed therein, a central portion of the support plate 310 penetrates, and a fastening portion formed in the air chamber 200 at a lower portion thereof. A gear chamber 300 in which a protrusion 320 that can be coupled to 210 is formed; The fluid is coupled between the upper surface of the bent portion 230 of the air chamber 200 and the lower surface of the protrusion 320 of the gear chamber 300 through the coupling surface of the air chamber 200 and the gear chamber 300 Sealing pack 250 to prevent the leakage of the; as a technical gist to include a glass part 150 due to volume expansion due to the solidification of the fluid and at the same time to prevent the inflow of tap water and air directly into the gear chamber 300 And to prevent the bursting of the gear chamber 300 relates to a freeze-prevention water meter that can prevent economic losses due to replacement and loss due to leakage of tap water.

Description

Water meter preventing break with freeze

The present invention relates to a freeze-prevention water meter that prevents the glass protecting the water meter instrument panel from falling due to a sudden drop in temperature in winter, and more particularly, prevents the fluid from directly entering the gear chamber and occurs when the fluid solidifies. The present invention relates to a freeze-preventing water meter which attempts to prevent freezing of the water meter even when the fluid is solidified by forming a space to cope with the volume expansion.

When the temperature suddenly falls in winter, freezing of the water meter is common. To prevent this, many people try to prevent freezing by inserting insulation or fabric into the meter protection tank where the water meter is installed. Although this method may have a freezing effect to some extent, it is not suitable as a fundamental measure and has a lot of trouble.

Hereinafter, a structure of a general water meter will be briefly described with reference to FIG. 1. The water meter has a structure in which the inlet 10 of the fluid is formed on one side and the outlet 11 for supplying water to each home is formed on the other side, and the instrument panel 12 for accumulating and recording the flow rate therebetween is installed. And a rotor 20 is rotated as the fluid flows is formed inside the water meter, a gear (not shown) is formed at the upper end of the rotor 20, the gear is a plurality of operating the instrument panel 12 Combination with the gears (not shown), as the rotor 20 is rotated, the numerical value appears on the instrument panel 12, thereby forming a structure that can check the water consumption. In the general water meter shown in FIG. 1, the gear chamber 30 is in direct contact with the rotor support 25, so that the fluid flows directly into the gear chamber 30. 30 also has a problem of being deposited in the fluid. In winter, there is a problem that the fluid in the water meter solidifies due to a sudden drop in temperature and volume expansion of approximately 10 percent occurs, which causes the glass part 15 to be damaged if the gear chamber is damaged and the water level rises further. .

In order to cope with the problems as described above, the water meter cap for freeze protection and frequency manipulation prevention of Korea Patent Office Registration No. 1989-0002134 has been registered, and another one is the capital of registration number Thread 1989-0007824 There was a meter freeze protection.

The prior art will be described with reference to FIGS. 2 and 3 attached as follows.

First, Figure 2 is a vertical cross-sectional configuration of the water meter cap for preventing freezing and tampering, and the left and right split type synthetic resin cap (1) (1), which can surround both the body of the meter, the side of the cover and the connection portion of the water pipe. '), But the stone wall (2) (3) is formed on the inner side of the cap, and the hard synthetic resin (6) on the outer surface of the heat insulating material (4) filling space (5), the side of the lid and the outer surface of the connection of the water pipe (6) It is characterized in that it comprises a synthetic resin solution filling space (7) and (9), each of which is hardened with a), and is provided with a side lid assembled with screws and fitted on a water pipe on the outer surface of the space (9). With the above configuration, the prior art is in a state in which the cover of the meter or the connection part of the water pipe cannot be separated without destroying part or all of the cap, thereby preventing manipulation of the water and the meter being kept warm as the cap and the heat insulating material. It prevents freezing even in winter.

The water meter cap for the freeze protection and the manipulator prevention according to the prior art requires a separate cap, and the installation work is complicated, and once installed, there is a problem in that it is not easy to separate and difficult to maintain and maintain.

Next, a water meter freezing prevention apparatus according to the prior art will be described with reference to FIG. 3. The water meter freeze protection device is installed in the insulating wire 4, the insulated sheathed heating wire (4) in the water meter main body (1), the water supply pipe (2) and the water supply pipe (3) is operated below 0 ℃ It is characterized in that the thermoelectric element 5 is connected. The prior art using the thermoelectric element has many problems such as electric shock accidents and short-circuits to be installed and used in a water meter which has high humidity and is likely to come into contact with tap water. Have In addition, when there is a problem with the electrical device, there is a problem that the water meter may freeze and freeze as the temperature decreases.

Accordingly, an object of the present invention is to provide a freeze-prevention water meter that is simple, easy to install, and does not have a malfunction of the device.

1-A partial cutaway cross-sectional view of a typical water meter.

Figure 2-Longitudinal cross-sectional assembly diagram of the water meter cap for freeze protection and tampering prevention according to the prior art.

Figure 3-Partial cutaway perspective view of a water meter freeze protection device according to the prior art.

Figure 4 is a partial cut-away cross-sectional view of the water meter for preventing the freezing showing an embodiment of the present invention.

5 is a view showing the flow of fluid in the freeze-preventing water meter showing an embodiment of the present invention.

<Description of Major Symbols Used in Drawings>

100: main body 110: entrance

120: exit 130: rotor

140: instrument panel 150: glass

200: air chamber 210: fastening portion

220: shaft hole 230: bent portion

250: Sealing Pack 300: gear room

310: support plate 320: protrusion

The present invention for achieving the above object, the hollow inside the upper surface is completely opened, the upper inner surface is formed with a fastening portion, the lower surface is formed only the shaft portion of the central shaft hole and the inner surface is provided with a bent portion, and The instrument panel and the support plate for installing a plurality of gears on the upper portion is formed therein, the center of the support plate is penetrated and the lower portion of the gear chamber formed with a protrusion that can be coupled to the fastening portion formed in the air chamber, the bent portion of the air chamber And a sealing pack coupled between the upper surface and the lower surface of the protrusion of the gear chamber to prevent the leakage of fluid through the coupling surface of the air chamber and the gear chamber, thereby preventing tap water and air from directly entering the gear chamber. Freeze-preventing water whose technical point is to prevent rupture of the glass part and gear chamber by volume expansion due to coagulation of tap water. It is about a meter.

The freeze-prevention water meter according to the present invention is easy to install, repair, and the like in terms of cost, and also has the advantage of being able to adjust the height of the air chamber according to water pressure.

On the other hand, the air chamber and the gear chamber is preferably coupled to the screw coupling method.

Hereinafter, the overall configuration of the freeze-prevention water meter according to the present invention will be described.

4 is a cross-sectional view of a partially cut freezing water meter for an embodiment of the present invention, the main body 100, the rotor 130, the rotor support 135, the air chamber 200, the gear chamber 300, the instrument panel 140, the protective glass 150, and the cover 160.

The main body 100 has the inlet 110 and the outlet 120 of the fluid is formed on the left and right sides, and the circular opening is formed in the center of the upper surface of the rotor 130, the rotor support 135, the air chamber ( 200), the gear chamber 300, the instrument panel 140 is configured to be internal. On the other hand, a protective glass 150 for protecting the instrument panel 140 is formed on the top of the main body 100, the cover 160 is coupled.

The rotor 130 and the rotor support 135 rotated according to the flow of the fluid are configured to be applied to a general water meter together with the main body 100, the protective glass 150, the instrument panel 140, and the cover 160. The detailed description will be omitted.

The air chamber 200 has a cylindrical shape, the upper portion of which is completely opened, and a shaft hole 220 penetrating the center portion thereof is formed, and a fastening portion 210 to which the gear chamber 300 is coupled is provided on the upper inner surface thereof. And the bent portion 230 is provided with a sealing pack 250 is installed to prevent the leakage of the fluid through the coupling surface with the protrusion 320 of the gear chamber 300 to be described later. The sealing pack 250 is installed on the upper edge of the bent portion 230 and the lower end of the protrusion 320 of the gear chamber 300 is located on the upper portion of the air chamber 200 and the gear chamber 300 and Leakage of air and water through the threaded portion of the In one embodiment of the present invention, the coupling of the air chamber 200 and the gear chamber 300 to the screw coupling method, but not limited to this, it turns out that other coupling methods are possible.

The lower surface of the air chamber 200 is positioned on the upper surface of the rotor support 135.

Protruding portion 320 formed on the lower portion of the gear chamber 300 is fastened to the fastening portion 210 formed on the upper inner surface of the air chamber 200 by screwing, and the upper portion of the gear chamber 300 is opened. And there is formed a support plate 310 in which a plurality of gears (not shown) can be installed and the central portion is opened so that the shaft of the rotor can be inserted.

And a sealing pack 250 is installed on the lower surface of the protrusion 320 of the gear chamber 300, which is the air or fluid flowing in the air chamber 200 is coupled to the gear chamber 300 and the air chamber 200 It is preferable to use a sealing pack 250 having a function of preventing leakage through the surface and having elasticity of a rubber material.

The instrument panel 140 is formed on the upper surface of the gear chamber 300, the numerical value of the instrument panel 140 changes due to the rotation of the rotor 130, and a protective glass 150 is installed on the upper portion of the instrument panel. do. And the instrument panel 140 and the glass portion 150 formed on the upper surface of the gear chamber 300 is preferably manufactured so as to be completely sealed after assembly, so that the air in the air chamber 200 does not leak to the outside Therefore, the air contained in a certain volume is to expand or compress according to the water pressure to suppress the rise of the water level.

5 is a flow diagram illustrating a fluid flow in the freeze protection water meter according to an embodiment of the present invention, and the operation principle of the freeze protection water meter according to the present invention will be described.

As shown, fluid is introduced through the inlet 110 and fluid flows into the rotor support 135 through a plurality of lower guide holes a formed in the lower portion of the rotor support 135. At the same time as rotating the rotor 130 installed inside the electronic support 135, the fluid moves to the outlet 120 through the upper guide hole (b) formed in the upper portion of the rotor support (135). In the above process, the fluid is leaked to the upper through the shaft hole 220 formed in the air chamber 200, and the water level is increased when the water pressure is higher. Therefore, the air chamber 200 having a free space is installed to prevent the fluid leaking through the shaft hole 220 directly into the gear chamber 300 is installed, especially in the winter through the shaft hole 220 The leaked fluid freezes due to a sharp drop in temperature, which causes a volume expansion equivalent to 10 percent of the fluid volume. Even in such a case, it is possible to cope with volume expansion by the space part of the air chamber 200.

In addition, the air present in the air chamber 200 having a constant volume can maintain a proper balance with the water pressure in the water meter. When the water pressure is high, the air in the air chamber 200 is compressed and the pressure is increased to increase the water level rapidly. To prevent it.

The use of the freeze-prevention water meter according to the present invention has an effect of preventing the breakage of the gear chamber and the protective glass by forming a space to cope with the volume expansion even when the residual fluid in the water meter is frozen even in winter when the temperature drops sharply.

In addition, by increasing the height of the air chamber there is also an effect that can be used in the place where high water pressure acts.

Claims (2)

The main body 100 having the inlet 110 and the outlet 120 of the fluid and a rotor 130 rotated according to the flow of the fluid are provided in the main body 100 to be formed on the top surface of the main body 100. In the water meter in which the flow rate of the fluid is accumulated on the instrument panel 140, The upper surface is completely open in a hollow cylindrical shape, the fastening portion 210 is formed on the upper inner surface and the shaft hole 220 is formed only on the lower portion of the lower surface, and the bent portion 230 is bent on the inner surface. Thread 200; A support plate 310 is formed therein to allow the instrument panel 140 and a plurality of gears (not shown) to be installed therein, a central portion of the support plate 310 penetrates, and a fastening portion formed in the air chamber 200 at a lower portion thereof. A gear chamber 300 in which a protrusion 320 that can be coupled to 210 is formed; And a sealing pack 250 coupled between the upper surface of the bent portion of the air chamber and the lower surface of the protrusion of the gear chamber to prevent leakage of fluid through the coupling surface of the air chamber and the gear chamber. A water meter for preventing freezing, characterized in that it prevents the inflow into the gear chamber 300 and prevents the gear chamber 300 from rupturing due to volume expansion due to coagulation of tap water. The method of claim 1, wherein the air chamber A freeze-preventing water meter, characterized in that the screw coupling method for coupling with the gear chamber.