KR100883774B1 - A water meter for the prevention of breakdown by frozen - Google Patents

Abstract

The present invention relates to a freeze-preventing meter, the freeze-prevention meter of the present invention includes a wing portion through which water passes, an operating portion having a plurality of gears rotating in accordance with the rotation of the blade, and a display portion numerically indicating the flow rate by the rotating gear. In the freeze protection water meter consisting of, the absorbing member is formed to absorb the expanded volume when the water is frozen inside the operating unit case constituting the operating unit.

With the above-mentioned freeze-proof meter, the elastic absorbing member absorbs the volume expansion generated when water freezes to prevent breakage of the meter, and by using the elastic absorbing member made of rubber material, due to rapid temperature change and external impact. It is possible to reduce the breakage of the absorbing member itself.

Meter, freeze protection, absorption member.

Description

Freeze protection meter {A WATER METER FOR THE PREVENTION OF BREAKDOWN BY FROZEN}

1 is a view showing a freeze protection meter according to the prior art,

2 is a view showing the internal structure of a freeze protection meter according to the present invention,

3 is a perspective view showing a freeze protection meter according to the present invention;

4 is an exploded view showing a freeze protection meter according to the present invention;

5 is a view showing a cross section of the freeze protection meter according to the present invention,

6 is a view showing another embodiment of a freeze protection meter according to the present invention.

Explanation of symbols on the main parts of the drawings

200: display unit

300: operating part

320: gear

340: elastic member

350: auxiliary elastic member

400: wing

410: rotation axis

420: wings

The present invention relates to a meter, and more particularly, to a freeze-preventing meter that prevents the meter from being damaged by expanding its volume while freezing water remaining inside the water meter in winter.

In general, the meter indicates, directly or indirectly, how many times the physical quantity is based on the promised weighing unit, respectively. Among them, the water meter is used to measure the amount of water used and is installed outdoors in single-family homes, villas and apartments.

However, because the water meter is installed outdoors, the water meter is easily frozen due to the winter temperature drop. While there is no water use, the water remaining inside the water meter freezes and expands in volume, and there is a limit to the space for this volume expansion inside, which causes water meter breakage.

Accordingly, in winter, the old water meter, styrofoam, vinyl, etc. was used to wrap and insulate the water meter, but the appearance was not good and the insulation was not effective.

Therefore, in order to solve the above problems, install a heating wire around the water meter to insulate or install an air bag cushion inside the water meter, or to absorb the increased volume by using a relaxation member such as PVC to alleviate the volume expansion. There have been many attempts.

Accordingly, many prior art technologies for protecting water meters from winter freezing are disclosed.

However, in order to install a heating wire around the water meter, power is supplied to the meter and the volume of the water meter is increased, so additional consumption is large, and when the airbag cushion is installed, it is easily damaged by external shocks or scratches, The phenomenon that the relaxation member was broken by the temperature change occurred.

In addition, the prior art for protecting the water meter as described above is disclosed in the Republic of Korea Patent Application Publication No. 10-2004-0053631.

An outer space 10 having an inner space, a lower inner shell 20 inserted into the inner space of the outer shell, an impeller 30 inserted into the lower inner shell and supported by the shaft 31 so as to be rotatable, and an upper portion of the lower inner shell The upper inner shell 40 is formed to be in contact with the inner space of the outer shell.

Reduction gear 50 that is engaged with the shaft 31 of the impeller 30 and is inserted above the upper inner shell 40, and is rotated by the reduction gear 50, the indicator needle 60 to display the water consumption And, having a display window 70 to check the indicator needle 60 from the outside, the space between the bottom surface of the lower inner shell 20 and the bottom surface of the outer shell 10 and the lower portion of the upper inner shell 40, respectively The volume absorbing elastic members 80 and 90 are arranged.

The volume absorbing elastic members 80 and 90 have a cylindrical shape having a low height, and the center of one of the volume absorbing elastic members 90 is bored to allow the shaft 31 to pass therethrough. The external shape of the volume absorbing elastic members 80 and 90 is an elastic base material 81 formed of an elastic material, and the plurality of elastic particles 82 filled with air inside the ball-shaped shell inside the elastic base material. ) Are distributed.

However, the method of protecting the water meter of the prior art from freezing air must be filled with each of the plurality of elastic particles disposed inside the elastic base material 81, and after producing a plurality of elastic particles and placing them inside the injection mold, the elastic Since the injection molding of the raw material of the material is made by molding the elastic base material, the process is complicated and the manufacturing time, cost, and manpower consumption are large.

In addition, when the elastic particles are not evenly distributed, the absorption of the increased volume due to the frozen tap water was not smooth.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems as described above, to provide a freeze-preventing meter that can smoothly absorb the increased volume to prevent freezing.

Another object of the present invention is to provide a freeze-preventing meter which is simple in construction and reduces manufacturing time, cost, and manpower consumption for making the meter.

In order to achieve the above object, the freeze protection meter of the present invention includes a wing portion through which water passes, an operating portion provided with a plurality of gears rotating according to the rotation of the blade, an operating portion case surrounding the operating portion, and rotation of the gear. In the freeze-prevention water meter including a display unit for displaying the flow rate, an elastic member is installed between the operating unit and the operating unit case, an operating unit cover is installed at the lower end of the operating unit, the elastic member is the operating unit case And it is provided spaced apart from the operation unit cover, respectively, the absorbing member is made of a cylindrical shape having a bottom surface, the upper portion is provided with a flange protruding outward on the upper outer peripheral surface so as to be caught by the upper edge of the operation unit case The flange absorbs an expanded volume of water between the actuator case and the actuator cover, St. member is formed by a two-layer bottom surface, there is an air layer between the bottom surface of the two layers is formed, characterized in that formed in the bottom surface constituting the elastic members have a secondary resilient member protrudes.

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Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in the following description the same reference numerals are attached to the same parts in the drawings, and repeated description thereof will be omitted.

Figure 2 is a view showing the internal structure of the freeze protection meter according to the invention, Figure 3 is a view showing a freeze protection meter according to the invention in a perspective view, Figure 4 is a view showing a developed view of the freeze protection meter according to the invention 5 is a view showing a cross section of the freeze protection meter according to the present invention, Figure 6 is a view showing another embodiment of the freeze protection meter according to the present invention.

Meter according to an embodiment of the present invention is composed of a meter (2) for measuring and displaying the flow rate and the body (1) formed with a pipe connecting portion 100 connected to the pipe surrounding the meter (2), the metering The unit 2 is composed of a display unit 200 showing a numerical value, an operating unit 300 having a plurality of gears, and a wing unit 400 rotating according to the flow rate.

The display unit 200 includes a display panel 210 indicating a measured value and a lid 230 protecting the display panel 210. In this case, the display panel 210 may be displayed to the count wheel 220 is displayed, the count wheel 220 is connected to the gear 320 to be described later, the count wheel 220 is operated as the gear 320 rotates To measure the amount of water used.

An operating unit 300 is connected to the lower side of the display unit 200, and the operating unit 300 includes an operating unit case 310 and a plurality of gears 320 installed therein.

Gears 320 installed in the operation unit 300 are connected to each other is formed to be engaged, the lower side is connected to the rotary shaft 410 formed in the center of the wing unit 400 to be described later rotates the gears 320 according to the blade rotation And to the upper side is configured to be able to operate the count wheel 220 in accordance with the rotation of the gear (320).

In addition, the lower portion of the gear 320, the operation part cover 330 is installed to block the access of foreign matter and to prevent the foreign matter caught between the meshing gears 320, the water is not inserted into the gear 320 is formed Don't let that happen.

Holes are formed in the operating part case 310 and the operating part cover 330 at the bottom of the operating part case 310 and the center of the operating part cover 330 so that the rotating shaft 410 to be described later can pass therethrough.

Meanwhile, an elastic member 340 is inserted between the operating part case 310 and the operating part cover 330, and the elastic member 340 has a hollow cylindrical shape in the center of the bottom surface 342. A shaft hole 343 is formed to allow the rotation shaft 410 to pass therethrough.
In addition, a flange 344 protruding outward from an outer circumferential surface of the cylinder 341 is formed at an upper end of the elastic member 340, and the flange 344 is caught by an upper edge of the operation part case 310 to operate. The airtightness is maintained between the 310 and the display unit 200.
In addition, the elastic member 340 is formed of a rubber material having elasticity and elasticity to be expanded toward the space when the water is frozen and expanded.

Here, the bottom surface of the elastic member 340 is spaced apart from the operation unit case 310 and the operation cover 330, respectively, so that the space is formed in the upper and lower sides of the bottom surface of the elastic member 340. In addition, the inner circumference of the operating unit case 310 and the outer circumference of the elastic member 340 are also spaced apart to form a space.

In addition, the shaft hole 343 is formed so that the tolerance with the rotating shaft 410 is minimized so that water passing through the wing 400 does not rise toward the operating unit 300. Here, the circumference of the shaft hole (343) is formed to form a projection that is repeated in the circumferential direction and the concave it is good to minimize the inflow of water to the operating unit 300 side.

On the other hand, the bottom surface 342 of the elastic member 340 is formed to protrude at least one auxiliary elastic member 250 at regular intervals. Here, the auxiliary elastic member 250 is a rectangular shape and formed of a soft rubber material. In addition, the auxiliary elastic member 250 may be formed on the upper surface or the lower surface of the bottom surface 342 or both surfaces.

In addition, as shown in FIG. 6, the elastic member 340 ′ may be formed as a bottom surface 342 ′ having a double structure. In this case, the elastic member 340 'has a bottom surface 342' formed in two layers under the hollow cylinder 341 ', and a space is spaced between the two layers of the bottom surface 342'. So that there is air inside.

In addition, each of the two-ply bottom surfaces 342 'is formed with a shaft hole 342' through which the rotational shaft 410 of the wing 400 passes, and two layers with a shaft hole 343 'formed therein. The shielding wall 345 is formed between the bottom surface 342 'of the water so that water does not flow between the two-ply bottom surface 342'. The shielding wall 345 is formed at an end portion of the two-ply bottom surface 342 'contacting the shaft hole 343' and a portion entering inward from the end.
Accordingly, even if water flows in between the elastic member 340 'and the operating part cover 330, the bottom surface 342' is inflated toward the air layer formed between the two layers of the bottom surface 342 ', respectively. To prevent breakage.

The wing unit 400 is formed at the lower side of the operating unit 300, and a rotation shaft 410 is formed at the center of the wing unit 400, and a plurality of wings 420 is formed around the rotation shaft 410. The connecting pin 430 of the steel material is formed to protrude from the upper center of the rotating shaft 410 to be connected to the gear of the operating unit 300.

In addition, an inlet 441 is formed at one side of the wing case 440 surrounding the wing 420 of the wing unit 400, and an outlet 442 is formed at the opposite side thereof, and the inlet 441 is provided. The outlets 442 are each formed in communication with the pipe connection 100 (see FIG. 5).

Here, the support pin 443 of the steel material is formed in the inner center of the wing case 440, the lower end of the rotary shaft 410 is inserted into the support pin 443 flows when the rotary shaft 410 rotates There is no support so that the rotation of the rotating shaft 410 is smooth.

Referring to the assembly structure and the operating state of the freeze protection meter of the present invention configured as described above are as follows.

The display unit 200 formed so that the count wheel 220 is visible at the top of the center is formed on the body 1 having a pipe connection 100 at both sides and a cylindrical space in which the metering unit 2 can be inserted at the center. The lid 230 of the material is assembled to cover and protrude.

Here, a display panel 210 having a hole formed to expose the count wheel 220 is provided below the lid 230, and an operation unit 300 is installed below the display panel 210. The operation unit 300 is provided so that the plurality of gears 320 mesh with each other, and the gear 320 is connected to the count wheel 220.

In addition, a circular operating part cover 330 is installed below the gears 320. A hole in which the rotating shaft 410 is inserted is formed in the center of the operation part cover 330 and protects the gear 320 by blocking foreign substances and water from being inserted into the gears 320.

In addition, the operation part cover 330 and the gear 320 are wrapped by the operation part case 310, and an elastic member 340 is installed inside the operation part case 310.

The elastic member 340 has a hollow cylindrical shape 341 having a bottom surface 342, and protrudes outwardly on an outer circumferential surface of the cylinder 341 so that the upper side thereof is caught by the upper edge of the operating part case 310. Flange 344 is formed. In addition, the shaft hole 343 is formed in the center of the bottom surface 342 and the auxiliary elastic member 350 is installed in the bottom surface 342 so as to be primarily pressed when the water is frozen and expanded.

The lower side of the operating unit case 310 is provided with a wing 400 having a plurality of wings 420 around the rotation axis. The wing unit 400 is protected by the wing case 440, the inlet 441 and the outlet 442 is formed in the wing case 440, the support pin 443 is formed in the center to the The rotating shaft 410 of the wing 400 to rotate without flow. The rotating shaft 410 is formed through the hole of the operating part case 310, the shaft hole 343 of the elastic member 340, the hole of the operating part cover 330, the connecting pin formed on the upper end of the rotating shaft 410 430 is connected to the gear 320.

The freeze protection meter of the present invention configured as described above, water introduced from one side of the body 1 is introduced into the wing 400 through the inlet 441, and moves through the outlet 442 on the opposite side, The wing 420 and the rotating shaft 410 is rotated by the moving water. The rotation of the rotation shaft 410 causes the gears 320 connected to the upper end of the rotation shaft 410 to operate, so that the count wheel 220 connected to the gear 320 operates.

At this time, the moving water of the elastic member 340 and the operating part cover 330 is prevented from rising, and if water is introduced into the space between the operating part case 310 and the elastic member 340, the rapid temperature change. Even when the water freezes and expands in volume, the elastic member 340 is expanded while being pushed to the space side between the elastic member 340 and the operating part cover 330 by its elasticity and elasticity.
In addition, when the auxiliary elastic member 350 is formed on the elastic member 340, when water freezes and expands, the soft auxiliary elastic member 350 pressed by the expanded volume is primarily pressed to absorb a constant volume expansion. Then, the elastic member 340 is expanded while pushing toward the operating unit cover 330 side.
When two layers of bottom surface 342 'are formed, water flows between the elastic member 340' and the operating part cover 330 and freezes between two layers of bottom surface 342 '. Each bottom surface 342 'expands towards the formed air layer to prevent breakage of the meter.
Then, when the frozen water is dissolved, the elastic member 340 is returned to its original shape by the restoring force of the material characteristic.

As described above, according to the freeze protection meter according to the present invention, by providing a space between the elastic member and the operation unit case and the operation unit and the operation cover, the elastic member is pushed into the space and expands when the water freezes and the volume expands. It is possible to prevent damage to the meter.

In addition, according to the freeze protection meter according to the present invention, it is possible to reduce the breakage of the elastic member due to the rapid temperature change and external impact by using the elastic member of the elastic rubber material.

In addition, according to the freeze protection meter according to the present invention, the operating part cover for protecting the gears is formed to prevent the foreign material and water is inserted between the gears to protect the gears.

In addition, according to the freeze protection meter according to the present invention, it is possible to reduce the manufacturing cost and labor cost through the elastic member formed in a simple structure.

Claims (6)

Wing through which water passes, Actuator with a plurality of gears that rotate in accordance with the rotation of the blade, An operation part case surrounding the operation part, In the freeze-prevention water meter including a display unit for displaying the flow rate by the rotation of the gear, An elastic member is installed between the operating part and the operating part case, An operating part cover is installed at a lower end of the operating part, and the elastic member is installed to be spaced apart from the operating part case and the operating part cover, respectively. The absorbing member is formed in a cylindrical shape having a bottom surface, the upper portion is provided with a flange protruding outward on the upper outer peripheral surface so as to catch the upper edge of the operating part case, the flange is the operating part case and the operating part Absorb the expanded volume of water between the covers, The elastic member has a bottom surface formed in two layers, an air layer is formed between the bottom surface of the two layers, Meter for preventing freeze, characterized in that the auxiliary elastic member protrudes on the bottom surface constituting the elastic member. delete delete delete delete delete

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