KR200373667Y1 - Water supply measuring instrument for preventing a breakage by freezing - Google Patents

Abstract

The present invention relates to a freeze-preventing water meter, and in particular, to improve the structure of the water meter to accommodate the volume expansion receiving part separately provided to the outside to expand the volume when freezing tap water inside to prevent the freezing of the water meter in winter The device relates to a measuring unit 100 having an impeller 110 formed thereon, and an indication unit 200 which receives the rotational force of the impeller 110 of the measuring unit 100 and indicates a current usage amount and a cumulative usage amount through a plurality of gears 210. ), A casing 300 seated in a state in which the measurement unit 100 and the indicator unit 200 are stacked, and an inlet 310 and an outlet 320 are formed, and a transparent window 510 and a cap 520. In the water meter consisting of a cover 500 is fastened to the upper end of the casing (300); A fastener 410 formed through the outlet 320 of the casing 300 and having a screw groove formed at an inner circumference thereof; A volume expansion accommodating part 420 is additionally fastened from the outside through the screw groove of the fastener 410, and a closed space is formed to accommodate air, thereby eliminating inconvenience and economic loss of the user and the manager. To make it possible.

Description

Water supply measuring instrument for preventing a breakage by freezing}

The present invention relates to a freeze-preventing water meter, and in particular, an apparatus for preventing the freezing of the water meter in winter by improving the structure of the water meter to accommodate a volume expansion receiving part separately provided to the outside to expand the volume when freezing the tap water inside. As a result, the present invention relates to a device capable of relieving inconvenience and economic loss of users and administrators.

In general, the water meter is used to measure the amount of water used in the water supply pipe connected to the stop connected to the water supply pipe from the water supply pipe.

1 is an exploded perspective view showing a general water meter, Figure 2 is a longitudinal cross-sectional view showing a general water meter.

As shown in FIGS. 1 and 2, a general water meter is provided with a measuring unit 10 having an impeller 11 and a rotating force of the impeller 11 of the measuring unit 10. An indicator 20 for indicating the amount of usage and the cumulative amount of usage, the casing 30 having the inlet 31 and the outlet 32 formed in a state where the measurement unit 10 and the indicator 20 are stacked, and a transparent window ( 51 and a cap 52, the cover 50 is fastened to the upper end of the casing 30.

As shown in FIG. 1 and FIG. 2, the general water meter configured as described above includes a casing 30 and a cover 50 that measure the volume of the flowing water and indicate the amount of use thereof. It is provided inside, and this water meter is connected to the water pipe stop.

Accordingly, when water is introduced through the inlet 31 of the casing 30, the introduced water rotates the impeller 11 of the measuring unit 10 in the casing 30, and then through the outlet 32. It is supplied to the use tool.

At this time, the impeller 11 rotating by the flow of water as described above may be instructed to the current amount of use through the rotatable instructions 22 meshing with a plurality of gears 21 provided in the indicating unit 20, metaset ( 23 may be used to indicate the accumulated amount of usage.

Accordingly, the amount of water indicated by the indicator 20 of the water meter can be easily read through the transparent window 51 by opening the cap 52 of the cover 50.

However, such a general water meter has a casing 30 is sealed to prevent water leakage to the outside while the water meter is exposed to the outside to stop the water pipes usually buried so that the amount of water can be metered through the indicator 20. Therefore, if the water meter is exposed to freezing temperatures below zero in winter, the water inside the water meter expands due to the water freezing inside, and thus freezing occurs in the water meter. Will accompany.

Various types of freeze-prevention water meters have been developed to compensate for the shortcomings of the freezing-wave water meters as described above, and various examples are disclosed in the inside of the freeze-prevention water meters which can flexibly accommodate a volume that expands due to water freezing. It is.

In such a freeze-preventing water meter, an additional air cushion is inserted into the casing to allow the air cushion to contract by external pressure when water freezes, or an additional elastic body is inserted between the indicator and the cover to elastically lift the indicator according to volume expansion. The point is to make it possible.

However, since the conventional freeze protection water meter only accommodates volume expansion due to freezing of water inside the casing, it does not elastically absorb the expansion of volume due to freezing of water, and thus does not effectively prevent freezing and its structure. There is a technical problem that is not very widely applied to the actual water meter due to the high complexity and high production cost.

The present invention is to solve the above problems, by adding a simple structure to the water meter to accommodate the volume expansion receiving unit separately provided to the outside to expand the volume when freezing the tap water inside, effectively prevent the freezing of the water meter in winter To prevent the inconvenience and economic loss of users and administrators to provide a freeze-prevention water meter.

The present invention has a measuring unit formed with an impeller, the indicator for indicating the current usage and cumulative usage through a plurality of gears received impeller rotational force of the measuring unit, and the inlet and outlet formed in the stacking state of the measuring unit and the indicator A water meter comprising a casing, a cover fastened to an upper end of the casing, including a transparent window and a cap; A fastener formed through the outlet of the casing and having a screw groove formed at an inner circumference thereof; It is achieved by additionally provided with a volume expansion receiving portion fastened from the outside through the screw groove of the fastener, the closed space is formed to accommodate the air.

1 is an exploded perspective view showing a general water meter,

2 is a longitudinal sectional view showing a general water meter;

Figure 3 shows an embodiment of the freeze protection water meter of the present invention

Cross Section,

Figure 4 shows another embodiment of the freeze protection water meter of the present invention

Cross Section,

5 is an enlarged view of a portion A of FIG. 4.

<Explanation of symbols for the main parts of the drawings>

100: measuring unit 110: impeller

200: indicator 210: gear

300: casing 310: inlet

320: outlet 410: fastener

420: volume expansion container 421: piston

422: elastomer 423: thermal insulation paint

500: cover 510: transparent window

520 cap

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a longitudinal sectional view showing an embodiment of the freeze protection water meter of the present invention, Figure 4 is a longitudinal sectional view showing another embodiment of the freeze protection water meter of the present invention, Figure 5 is This is an enlarged view of part A.

As the freeze protection water meter of the present invention, as shown in Figure 3, the impeller 110 is formed through the measurement unit 100, the impeller 110 of the measuring unit 100 receives the rotational force through a plurality of gears 210 Indication unit 200 for indicating the current usage and cumulative usage, the casing 300, the inlet 310 and the outlet 320 is seated in a state in which the measurement unit 100 and the indicator 200 are stacked, transparent window In the water meter comprising a cover 500 is fastened to the upper end of the casing 300, including the 510 and the cap (520); A fastener 410 formed through the outlet 320 of the casing 300 and having a screw groove formed at an inner circumference thereof; It is a basic feature of the technology that the volume expansion receiving portion 420 is fastened from the outside through the screw groove of the fastener 410 and is provided with a sealed space to accommodate air.

Hereinafter, the operation of the present invention with reference to Figure 3 as follows.

The freeze protection water meter of the present invention configured as described above, as shown in Figure 3, in the existing water meter consisting of the measuring unit 100, the indicating unit 200, the casing 300, and the cover 500, A volume expansion accommodating part 420 connected to one side of the casing 300 is additionally configured, and the volume expansion accommodating part 420 is generally accommodated with a predetermined amount of air to expand when water freezes in the casing 300. It will flexibly accommodate the volume.

Here, the impeller 110 is rotatably provided at the center of the measuring unit 100 so as to rotate according to the flow of water, and the axis of the impeller 110 extends upward and is assembled to the upper side of the measuring unit 100. The rotation force is transmitted to the indicating unit 200.

In addition, the instruction unit 200 may be rotated by a plurality of gears 210 according to the rotational force of the impeller 110 to indicate the current amount of water used, and the rotational force is also transmitted to the metaset. The cumulative amount of water can also be indicated.

Glycerin is usually filled in the indicator 200 to prevent the freezing of the indicator 200 together with lubrication between the gears 210.

The casing 300 for accommodating the measurement unit 100 and the indication unit 200 by assembling the upper and lower parts is usually formed by casting. The inlet 310 is formed at one side and the outlet 320 is formed at the other side, so that the water pipe is By being connected to the inlet 310 and the outlet 320, respectively, the water enters into the casing 300 through the inlet 310 on the left side of the drawing, rotates the impeller 110, and then exits through the outlet 320 on the right side. do.

At this time, the inlet 310, the inner periphery is provided with a filtration filter 311 to filter the foreign matter mixed in the water.

In addition, the upper opening of the casing 300 has a cover 500 including the transparent window 510 and the cap 520 after the assembling of the measuring unit 100 and the indicating unit 200 is fastened to seal the casing 300. The leak from the casing 300 is prevented, and the cap 520 is hinged to one side of the cover 500 to open and close the transparent window 510.

The most characteristic feature of the present invention is the volume expansion receiving portion 420 that can elastically accommodate the volume to expand when the water freezes on one side of the existing water meter configured as described above is added to the outside of the interruption of the casing 300 It is provided with.

At this time, the volume expansion receiving portion 420 is to be able to relax by inducing the volume expansion inside the casing to the expanded space outside, the fastener for fixing the volume expansion receiving portion 420 to the casing 300 310 is formed through.

In addition, a screw groove is formed in the inner circumferential surface of the fastener 310, and a thread is formed at one outer circumference of the volume expansion accommodating part 420 to correspond to the screw groove, thereby making the volume outside the casing 300. It is desirable to be able to easily fasten the expansion receiving portion 420.

The volume-expansion accommodating part 420 is molded into a sealed accommodating shape and is simply filled with air as it is fastened and assembled to the fastener 410 formed in the casing 300 during manufacture of the water meter. In addition, even when the water meter is connected to the stop of the water supply pipe, predetermined air remains continuously in the volume expansion accommodating part 420.

Accordingly, when water in the casing 300 of the water meter freezes, the expanding volume is elastically relaxed by the air remaining in the volume expansion receiving portion 420, thereby effectively preventing the freezing phenomenon of the water meter. It is.

The fastener 410 supporting the volume expansion receiving part 420 is formed to have a predetermined inclination from the casing 300 as shown in FIG. 3 to form an inlet of the volume expansion receiving part 420. Not only can be installed adjacent to the center (300), as shown in Figure 4 but slightly spaced apart from the center of the casing 300, the fastener 410 may be formed in a vertical direction.

In addition, the volume expansion receiving portion 420 in the piston as shown in Figures 4 and 5; An elastic body 422 gripping the piston 421 downward may be further configured. In this way, by adding the elastic body 422 and the piston 421 in the volume expansion receiving part 420, the volume expansion when the water freezes. The receiving portion 420 may further relieve the volume expansion in a limited space.

At this time, in order to insert the elastic body 422 and the piston 421 into the volume expansion portion 420, as shown in Figures 4 and 5, by turning the top of the volume expansion portion 420, the lid It is desirable to be able to open in form.

In addition, it is preferable in the present invention that the heat-insulating paint 423 is colored on the outer surface of the volume-expansion accommodating part 420, and thus, when the water meter is exposed to sub-zero outside air temperature. The volume-expansion accommodating part 420 may maintain a somewhat higher temperature than the casing 300 for a predetermined time, even though the casing 300 itself is preferentially frozen due to sub-zero outside temperature, thus still freezing inside the casing 300. Since no flowable water can be smoothly guided to the volumetric expansion receiving portion 420, all the pressure in the casing is concentrated in the volumetric expansion receiving portion.

At this time, the heat-insulating paint 423 is a paint so that the object to be painted during painting is hardly influenced by the outside temperature, such a heat-insulating paint 423 is well known and applied to the freeze-preventing water meter, further description will be omitted. .

Referring to the operation of the freeze protection water meter of the present invention as described above in detail as follows.

First, when the freeze-preventing water meter of the present invention is connected to the stop of the water pipe in a state of being exposed to the outside, at this time, the casing 300 is filled with water, but air is contained in the volume expansion receiving part 420. The water in the casing 300 is not frozen if the flow of water through the water meter is continued even in winter.

However, if the flow of water does not continue, it starts to freeze from the casing 300 of the water meter by the sub-zero outside temperature, and accordingly, the water inside the casing 300 is also centered from the outer portion which is in contact with the casing 300. Gradually begin to freeze.

At this time, since the outer surface of the volume-expansion accommodating portion 420 is painted with a heat-insulating paint 423, the fastener 410 surrounding the volume-expansion accommodating portion 420 is maintained in an unfrozen state. .

Accordingly, water that is not yet frozen in the center of the casing 300 is collected around the inlet of the fastener 410, and the volume expansion caused by the water freezing inside the casing 300 is the volume expansion accommodating portion 420. To be concentrated.

Thereafter, the volume expands as the water freezes, and the pressure applied to the volume expansion receiving portion 420 gradually increases, and this pressure acts on the air remaining in the volume expansion receiving portion 420, and the volume expansion Air in the receiving portion 420 is to be able to elastically accommodate the expansion of the volume as shown in Figure 3 as the volume is contracted proportionally according to the pressure.

In addition, when the elastic body 422 and the piston 421 are further provided in the volume expansion accommodating part 420, the piston 421 may be subjected to concentrated pressure surface pressure. As it rises upwards, the elastic body 422 elastically supports this pressure together with the pressure of air, so that the volume expansion receiving part 420 can more smoothly mitigate volume expansion due to freezing of water.

Therefore, the volume expansion caused by water freezing inside the casing 300 can be effectively alleviated by the volume expansion receiving portion 420 having a simple structure, thereby effectively preventing freezing of the water meter during the winter season.

In addition, the indicator provided inside the casing 300 as well as external damage such as the indicator 200 or the cover 500 which are visually observed by the ice inside the water meter according to the action of the volume expansion receiving part 420. Since the damage of the invisible gear 210 due to the freezing of the 200 can also be prevented, there is an excellent effect of ensuring accurate water metering even when the water meter is thawed without external damage. .

The freeze-proof water meter of the present invention as described above can effectively induce and mitigate the volume expansion caused by water freezing in the casing 300 to the volume expansion accommodating portion 420 added to the casing 300 as a separate material, Since it is possible to prevent the freezing of the water meter which occurs frequently in the winter, it is an innovative design that can significantly reduce the economic loss caused by the freezing of the water meter.

The present invention as described above, by adding a simple structure to the water meter to accommodate the volume expansion receiving unit separately provided to the outside to expand the volume when freezing the tap water inside, it is possible to effectively prevent the freezing of the water meter in winter, users and managers It is designed to solve the inconvenience and economic loss.

Claims (3)

A measuring unit having an impeller formed therein, an indicator for indicating the current and cumulative amount of usage through a plurality of gears by receiving the impeller rotational force of the measuring unit, a casing in which the inlet and the outlet are formed and seated in a state in which the measuring unit and the indicator are stacked; A water meter comprising a cover fastened to the top of the casing, including a window and a cap; A fastener formed through the outlet of the casing and having a screw groove formed at an inner circumference thereof; The freeze-proof water meter, which is fastened from the outside through the screw groove of the fastener and has a volume expansion accommodating part in which a closed space is formed to accommodate air. 2. The apparatus of claim 1, further comprising: a piston in the volume expansion receiving portion; An anti-freeze water meter, characterized in that the elastic body further supports the piston downwardly configured. 3. The freeze-preventing water meter according to claim 2, wherein a heat-insulating paint is colored on the outer surface of the volume-expansion accommodating portion.