KR20230041528A - Digital water meter meter reading system using the same - Google Patents

Abstract

The present invention relates to a digital water meter and a meter reading system using the same, and more specifically, to a digital water meter and a meter reading system using the same, which may measure the used amount of tap water by means of a digital method which is a dry method without water exposure. To this end, the present invention comprises: a lower outer shell of which one side has an inlet to introduce fluid, and the other side has an outlet to discharge fluid respectively; a lower inner shell installed in the lower outer shell, and having a plurality of introduction holes and discharge holes formed at the circumference; an impeller which is rotationally coupled to the inside of the lower inner shell, and has a plurality of wings formed to be rotated by means of the pressure of the fluid; an upper inner shell which is installed at the upper portion of the lower inner shell, is made of a transparent material, and blocks the introduction of water; a PCB installed in the upper inner shell; a laser sensor which is connected to the PCB in the upper inner shell to detect the rotation of the impeller; a measuring unit which is formed at the PCB to be connected to the laser sensor to measure the revolution of the impeller; an LCD panel which is installed at the upper portion of the PCB, and is connected to the measurement unit to output the measurement amount; a cover which is formed at the upper side of the upper inner shell to cover the upper side of the upper inner shell; and an upper outer shell which is coupled to the lower outer shell to close the opening portion of the lower outer shell. A reflection plate is provided at the upper surface of a plurality of wings of the impellers. A first debris removing member is formed at the upper surface of the wing at which the reflection plate is not provided among the plurality of wings of the impeller. Therefore, precision in measurement may be significantly increased.

Description

Digital water meter and meter reading system using the same {Digital water meter meter reading system using the same}

The present invention relates to a digital water meter and a meter reading system using the same, and more particularly, to a digital water meter capable of measuring tap water consumption by a dry digital method that is not exposed to water, and a meter reading system using the same.

In general, a water meter measures and measures the amount of water used so that an appropriate rate according to water consumption can be charged by detecting the amount of tap water consumed in houses or various buildings.

These water meters are classified into analog type water meters and digital type water meters.

Among them, the digital type water meter displays various information such as error and operation status, display item classification, unit measured amount, whether or not usage is measured, and since there is no gear part formed in the analog type water meter, the gear It has the advantage of high precision because there is no load acting on it.

As such a digital water meter, Korean Patent Registration No. 10-1790326 "Electronic Water Meter" is disclosed.

In the prior art, an inlet and an outlet to which water pipes are connected are formed on both sides, and an upper surface has an opening formed therein, a support case provided inside the housing, an impeller rotatably coupled to the inside of the support case, and the impeller. A permanent magnet coupled to the upper end of the support case, a weighing means provided on the upper surface of the support case and equipped with a sensor for detecting rotation of the permanent magnet on the lower surface, and a sealing member coupled to the housing to seal the opening of the housing. In the electronic water meter comprising a, the impeller extends in the vertical direction, a support body with an open upper surface, a plurality of blades radially extending from the circumference of the support body, and an upper side from the inner bottom surface of the support body The permanent magnet extends in the vertical direction and is configured in a cylindrical shape with a through hole formed in the center thereof to be fitted to the outer side of the upper end of the rotation shaft, and the outer diameter of the rotation shaft is greater than the inner diameter of the support cylinder. It is configured small, and is configured to form a gap between the outer circumferential surface of the rotating shaft and the inner circumferential surface of the support cylinder, is composed of an elastic rubber material, and is fitted to the outside of the rotary shaft so that the outer circumferential surface is in close contact with the inner circumferential surface of the supporting cylinder, so that the gap is formed. Disclosed is an electronic water meter further comprising an elastic ring body for sealing an inlet portion of the water meter.

However, in the prior art, slip occurs in the permanent magnet when the impeller rotates at a high speed, and an error occurs when measuring the rotation of the permanent magnet, so that accurate metering cannot be achieved due to omission of the amount of tap water used.

Therefore, there is a need to develop a digital water meter that does not generate measurement errors even when the impeller rotates at high speed.

Republic of Korea Patent Registration No. 10-1790326 (2017.10.19. Notice)

The present invention has been made to solve the above problems, and by measuring the number of rotations of the impeller by means of a laser sensor and a reflector provided in the impeller, a digital water meter capable of measuring more precise water consumption by greatly improving the measurement accuracy of tap water consumption. And it is an object to provide a meter reading system using the same.

In addition, the laser sensor is prevented from being damaged by water by maintaining the inner space of the upper inner case where the laser sensor is formed in a watertight state to block the inflow of water, and the durability of the water meter is secured by preventing freezing in the winter season. The purpose of the present invention is to provide a digital water meter capable of accurately measuring water consumption and a meter reading system using the same.

In addition, an object of the present invention is to provide a digital water meter capable of reading the water meter reading value in an outdoor meter reading unit and remotely reading the water meter based on the Internet of Things and a meter reading system using the same.

In order to achieve the above object to be solved, the digital water meter of the present invention has an inlet 110 formed to allow fluid to flow in on one side and an outlet 120 to discharge fluid on the other side, respectively. 100), is installed inside the lower outer armor 100, and has a plurality of inlet holes 210 and outlet holes 220 formed around the lower inner armor 200, which is rotatable inside the lower outer armor 200 The impeller 300 is installed on the upper part of the lower inner armor 200 and is formed of a transparent material and blocks the inflow of water. A PCB 500 installed inside the inner armor 400, a laser sensor 600 connected to the PCB 500 inside the upper inner armor 400 to detect rotation of the impeller 300, the PCB ( 500) and connected to the laser sensor 600 to measure the number of rotations of the impeller 300, an LCD panel installed on the PCB 500 and connected to the measurement unit to output a measurement amount ( 700), a cover 800 formed on the upper side of the upper inner armor 400 and covering the upper side of the upper inner armor 400, and an upper outer armor coupled to the lower outer armor 100 to seal the opening of the lower outer armor 100 (900); including,

A reflector 330 is provided on the upper surface of the plurality of wings 320 of the impeller 300,

It is characterized in that the first foreign material removal member 340 is formed on the upper surface of the plurality of wings 320 of the impeller 300, the reflection plate 330 is not provided.

In addition, a strainer 130 whose diameter decreases from one side to the other side is installed at the inlet 110 of the lower outer shell 100, and is inserted into the strainer 130, and the cross-sectional area widens from one side to the other side It is characterized in that the flowing water area variable member 140 is installed.

In addition, the laser sensor 600 includes a laser reflected by a light emitting unit for irradiating laser to the upper side of the impeller 300 and a reflector 330 provided on the upper side of the plurality of wings 320 of the impeller 300. and a light receiving unit for transmitting a light receiving signal to the measuring unit whenever light is received.

In addition, the measurement unit sets a measurement reference value, and increases the measurement amount output to the LCD panel 700 by one whenever the number of light reception signals transmitted from the light receiver meets the measurement reference value. .

In addition, the outlet 120 of the lower outer shell 100 is characterized in that a backflow prevention cartridge 1000 is provided to prevent water from flowing back.

In addition, a second foreign matter removing member 410 is formed on one side of the lower part of the upper inner armor 400, so that when the impeller 300 is rotated, the upper surface of the impeller 300 and the reflector 330 are rubbed to the reflector It is characterized in that foreign substances stacked on the upper surface of (330) are removed.

In addition, it is characterized in that a waterproof coating agent is applied to the lower part of the upper inner armor 400.

In addition, the meter reading system using the digital water meter according to the present invention is connected to the digital water meter (1) and the digital water meter (1) by wire or wirelessly to obtain meter reading data on the amount of tap water used by the digital water meter (1). An outdoor meter reader 10 that acquires, a repeater 20 that receives meter reading data from the outdoor meter reader 10 and transmits it wirelessly, and a collector 30 that receives meter reading data from the repeater 20 and transmits it wirelessly , and a management server 40 that receives meter reading data from the collector 30 and stores and manages the data in a database.

According to the present invention according to the configuration described above, by measuring the number of revolutions of the impeller by means of the laser sensor and the reflector provided in the impeller, the precision of measurement of tap water consumption is greatly improved, thereby enabling more accurate measurement of water consumption.

In addition, the laser sensor is prevented from being damaged by water by maintaining the inner space of the upper inner case where the laser sensor is formed in a watertight state to block the inflow of water, and the durability of the water meter is secured by preventing freezing in the winter season. It also has the effect of enabling precise measurement of water consumption.

In addition, the reading value of the water meter can be read by the outdoor meter reading unit, and the water meter can be read remotely based on the Internet of Things.

1 is a perspective view showing a digital water meter according to the present invention;
2 is an exploded perspective view showing a digital water meter according to the present invention;
3 is a cross-sectional view showing a digital water meter according to the present invention.
4 is an enlarged view showing a portion where a second foreign material removing member according to the present invention is installed;
Figure 5 is a perspective view showing a lower inner glove according to the present invention.
Figure 6 is an enlarged perspective view showing an enlarged impeller according to the present invention.
7 is an enlarged perspective view showing a PCB and a laser sensor according to the present invention in an enlarged manner;
8 is a diagram showing another embodiment of a digital water meter according to the present invention.
Figure 9 is a perspective view showing a strainer and a variable flow area member according to the present invention.
10 is a configuration diagram showing a meter reading system using a digital water meter according to the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

It is understood that when an element is referred to as being “connected” or “connected” to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings. Since the accompanying drawings are only examples shown to explain the technical idea of the present invention in more detail, the technical idea of the present invention is not limited to the form of the accompanying drawings.

Hereinafter, a digital water meter according to an example of the present invention will be described in detail with reference to FIGS. 1 to 9 .

1 is a perspective view showing a digital water meter according to the present invention.

The digital water meter according to the present invention measures the number of revolutions of the impeller by means of the laser sensor 600 and the reflector 330 provided in the impeller so that the dry type digital water meter greatly improves the accuracy of measuring the amount of tap water used, thereby providing more precise measurement. It may be possible to measure water consumption.

In addition, by keeping the inner space of the upper inner sleeve 400 where the laser sensor 600 is formed in a watertight state to block the inflow of water, the laser sensor 600 is prevented from being damaged by water, and freezing in winter is prevented. By securing the durability of the water meter, there is an effect of enabling precise measurement of water consumption even in winter.

This digital water meter includes a lower outer shell 100, a lower inner shell 200, an impeller 300, an upper inner shell 400, a PCB 500, a laser sensor 600, a measurement unit (not shown), and an LCD panel 700. , A cover 800, and an upper outer armor 900 may be included.

Hereinafter, with reference to FIGS. 1 to 9, components and operational effects of a digital water meter according to an example of the present invention will be described in detail.

The lower outer shell 100 is connected to the tap water supply line, and an inlet 110 is formed on one side so that fluid flows in and an outlet 120 is formed on the other side so that the fluid is discharged.

Tap water introduced through the inlet 110 rotates the impeller 300 provided inside the lower outer shell 100 installed inside the lower outer shell 100.

On the other hand, a backflow prevention cartridge 1000 may be installed on the outlet 120 side of the lower outer shell 100 to prevent water from flowing back into the water pipe.

When the cartridge 1000 for preventing backflow is forced by the pressure of supplied tap water, the elastic spring and the opening provided inside the case maintain a compressed state, so that tap water flows smoothly. In addition, when a water cutoff occurs, the opening and closing opening blocks the flow path while returning due to the restoring force of the elastic spring and the pressure of the tap water to flow backward, thereby preventing tap water from flowing backward. The cartridge 1000 for preventing backflow is a known technology, and a detailed description thereof will be omitted.

As shown in Figure 5, the lower inner armor 200 is installed on the inner lower part of the lower outer armor 100, and a plurality of inlet holes 210 and outlet holes 220 are formed around it. In addition, a support shaft 230 into which the lower end of the rotating shaft 310 of the impeller 300 is inserted is vertically protruded from the inner center of the lower inner armor 200.

This lower inner glove 200 has a first lower inner glove (200a) connected directly to the lower part of the upper inner glove (400) and a second lower inner glove (200b) having a smaller outer diameter than the first lower inner glove (200a) and extending downward. made up of

A plurality of discharge holes 220 are formed at regular intervals in the first lower inner armor (200a).

The first lower inner glove (200a) includes an inclined region in which the outer diameter decreases toward the upper direction, and at this time, the discharge hole 220 may be formed in the inclined region of the first lower inner glove (200a).

In other words, the discharge hole 220 is not formed in the vertical extension of the first lower inner armor 200a, which is formed to be spaced apart at a predetermined interval from the inlet hole 210 formed in the second lower inner armor 200b to be described later. By doing so, it is configured to move at a uniform speed when water is introduced into and discharged into the lower inner armor 200.

A plurality of inlet holes 210 are formed in the second lower inner armor 200b, and the inlet holes 210 are also formed to have a predetermined angle and are formed at regular intervals along the outer circumference of the second lower inner armor 200b. .

This inlet hole 210 may be formed at the same height as the height of the second lower inner armor (200b), but may also be formed at a height smaller than the height of the second lower inner armor (200b).

At this time, both the discharge hole 220 and the inlet hole 210 are formed to open in one direction other than the direction in which water flows.

In other words, in the case of the discharge hole 220, the uppermost direction of the first lower inner armor 200a is formed to be open, and the inlet hole 210 is formed to open the lowermost direction of the second lower inner armor 200b.

However, in the case of the discharge hole 220, the open area may be partially blocked while being combined with the upper inner armor 400, and in the case of the inlet hole 210, the area opened by being interviewed on the inner surface of the lower outer armor 100 is partially blocked. Unlike the hole structure of the conventional housing, which does not have an open area from the beginning, it creates a space in which water with delayed inflow can flow, contributing to enabling uniform movement of water.

In addition, the inlet hole 210 and the outlet hole 220 have mutually opposite directions, so that the inflow and discharge of water is smooth.

In particular, the inlet hole 210 is a hole through which water is introduced, and an angle is formed to have the same direction as the direction in which the impeller installed inside the lower inner armor 200 rotates, and the outlet hole 220 is a hole through which water is discharged. As a hole, it may be formed in the opposite direction to the inlet hole 210 described above.

That is, after the water introduced into the lower outer glove 100 flows into the lower inner glove 200 through the inlet hole 210 of the lower inner glove 200, it is smoothly again through the discharge hole 220 of the lower inner glove 200. An inlet hole 210 and an outlet hole 220 are formed so as to be discharged.

Therefore, the impeller 300 is rotated by the flow of water inside the lower inner case 200, and the water discharged through the discharge hole 220 of the lower inner case 200 is discharged through the outlet 120 of the lower outer case 100 is discharged to the outside through

The impeller 300 is rotatably coupled to the inside of the lower inner armor 200 and rotates through the pressure of the fluid.

The impeller 300 is inserted into the support shaft 230 protruding vertically from the inner center of the lower inner armor 200 and freely rotates on the support shaft 230, and is proportional to the flow rate of water introduced into the lower inner armor 200. is rotated by

A plurality of wings 320 are radially formed on the body of the impeller 300 .

A reflector 330 is provided on the upper surface of the plurality of wings 320 of the impeller 300 .

When the reflector 330 is provided to the plurality of wings 320, if one wing is provided, the adjacent wing may be skipped and the next adjacent wing may be provided. That is, the plurality of wings 320 may be radially formed by sequentially crossing wings with the reflector 330 and wings without the reflector 330 .

The reflector 330 may reflect laser light emitted from a light emitting unit of the laser sensor 600 to be described later so that the light receiving unit of the laser sensor 600 to be described later receives the reflected laser light.

In addition, a first foreign material removal member 340 may be formed on the upper surface of the plurality of wings 320 .

That is, the first foreign material removing member 340 may be formed on the upper surface of the plurality of wings 320 on which the reflector 330 is not formed.

As a result, the impeller 300 may be alternately formed with wings provided with the reflector 330 and wings provided with the first foreign matter removal member 340 .

The first foreign matter removal member 340 is rubbed with the lower part of the upper inner armor 400 to be described later to prevent scale from being caught by foreign substances on the lower part of the upper inner armor 400 so that the transmission of the laser is made constant so that the laser described later The sensor 600 may enable more precise rotation speed measurement.

The upper inner glove 400 is installed on the upper part of the lower inner glove 200 and is not in communication with the lower inner glove 200 so that water does not flow into the upper inner glove 400.

The upper inner glove 400 is made of a structure with an open top, and a PCB 500 and a laser sensor 600 to be described later may be installed on the inside.

In addition, the upper inner glove 400 may be formed of a transparent material. Therefore, the laser emitted from the laser sensor 600 to be described later can be easily irradiated to the impeller 300 through the upper inner armor 400.

In addition, a waterproof coating agent may be applied to the lower portion of the upper inner armor 400.

Therefore, by applying a waterproof coating to the lower part of the upper inner armor 400, water scale is prevented from being caught by foreign substances, etc., so that the transmission of the laser is made constant, so that the laser sensor 600 described later can measure the number of revolutions more precisely. there is.

In addition, a second foreign material removal member 410 may be formed on one lower side of the upper inner glove 400 .

The second foreign material removal member 410 may be formed on a portion symmetrical to the laser sensor 600 .

The second foreign material removal member 410 is installed through one side of the lower part of the upper inner armor 400 and is sealed by a rubber ring, O-ring, etc., thereby blocking water from entering the upper inner armor 400 .

The second foreign matter removing member 410 rubs against the upper surface of the impeller 300 to be described later, thereby preventing water stains from being accumulated on the reflector 330 formed on the upper side of the impeller 300 by foreign substances, and thus the laser can be accurately reflected. By doing so, the laser sensor 600 to be described later can measure the number of revolutions more precisely.

This upper inner sleeve 400 is composed of a first upper inner sleeve 400a and a second upper inner sleeve 400b extending downward with a smaller diameter than the first upper inner sleeve 400a, in particular, the inner sleeve of the first upper inner sleeve 400a. By forming a step along the inner diameter of the side, an O-ring may be provided on the step.

The PCB 500 may use a commonly used circuit board.

The PCB 500 may be electrically connected to the laser sensor 600, the measuring unit, and the LCD panel 700.

Therefore, measurements, calculations, and outputs can be performed through the PCB 500 .

A laser sensor 600 may be installed inside the upper inner armor 400.

The laser sensor 600 may detect rotation of the impeller 300 .

Since the laser sensor 600 is connected to and installed with the PCB 500, a light receiving signal can be transmitted to a measuring unit which will be described later connected to and installed in the same manner as the PCB 500.

The laser sensor 600 may include a light emitting unit and a light receiving unit.

The light emitting unit may irradiate a laser to the upper side of the impeller 300 .

The light receiving unit may receive laser light reflected by the reflector 330 provided on the upper side of the plurality of wings 320 of the impeller 300 .

The light receiving unit may transmit a light receiving signal to a measurement unit to be described later whenever laser light is received.

A measurement unit may be formed by being connected to the PCB 500 . The measurement unit is formed to be connected to the laser sensor 600 and receives a light receiving signal from the light receiving unit of the laser sensor 600 to measure the number of revolutions of the impeller 300 .

Hereinafter, the rotation speed measurement by the laser sensor 600 and the measuring unit according to the present invention will be described.

When the light emitting part of the laser sensor 600 installed on the upper inner sleeve 400 continuously irradiates the laser to the upper side of the impeller 300 and the impeller 300 is rotated by the water flowing into the lower inner sleeve, the impeller 300 The reflecting plate 330 provided on the upper surface of the plurality of wings 320 reflects the irradiated laser, and whenever the light receiving unit of the laser sensor 600 receives the reflected laser, the light receiving signal is transmitted to the measuring unit. will be sent to

The measurement unit that receives the light reception signal sets the measurement reference value before measurement, and increases the measurement amount output to the LCD panel 700 by one each time the number of light reception signals received from the light reception unit meets the measurement reference value. Measurements can be output.

For example, when the number of reflectors 330 provided on the upper surface of the plurality of wings 320 of the impeller 300 is 4, the measurement reference value set in the measurement unit is set to 4, and the light reception signal received by the measurement unit from the light receiver is 4. When reaching the turn, one rotation of the impeller 300 can be sensed. Therefore, water consumption can be measured by outputting one revolution of the impeller 300 to an LCB panel described later.

An LCD panel 700 may be installed on the PCB 500. The LCD panel 700 is connected to the measuring unit and outputs the measured amount by the measuring unit so that a manager can intuitively read the measured amount with the naked eye.

A cover 800 may be formed on the upper side of the upper inner armor 400. The cover 800 may seal the opening of the upper inner armor 400 to protect the PCB 500 and the laser sensor 600.

A seating groove in which the LCD panel 700 can be seated may be formed in the cover 800, and the upper surface of the seating groove is made of a transparent material so that the measurement amount output from the LCD panel 700 can be visually confirmed. can do.

The upper outer shell 900 is coupled to the lower outer shell 100 to seal the opening of the lower outer shell 100.

An outer cover made of a transparent material may be installed to open and close the top of the upper outer shell 900.

As shown in FIGS. 8 and 9 , a strainer 130 whose diameter decreases from one side to the other may be installed at the inlet 110 of the lower outer shell 100 . In addition, a water flow area variable member 140 may be installed that is inserted into the strainer 130 and whose cross-sectional area increases from one side to the other.

The strainer 130 is inserted into the inlet 11 of the lower outer shell 100, and is a means for filtering foreign substances and the like contained in tap water, and its shape can be variously changed.

The inner surface of the flowing water area variable member 140 is a portion in direct contact with the source of the introduced water, which is curved to minimize the pressure loss of the water. Also, the outer surface of the variable flow area member 140 should be formed similarly to the surface of a cylinder to correspond to the size and shape of the inner surface of the strainer 130. By inducing the direction of tap water by the flowing water area variable member 140, the accuracy of flow meter reading is improved.

The water flow area variable member 140 is inserted into the strainer 130, but the water flow area variable member 140 increases the cross-sectional area from one side to the other, so that the tap water introduced into the inlet side of the strainer 130 is gradually reduced After moving along the cross-sectional area, it is finally discharged to the outlet side of the strainer 130.

As shown in FIG. 10, the meter reading system using a digital water meter according to the present invention includes a digital water meter 1, an outdoor meter reader 10, a repeater 20, a collector 30, and a management server 40. do.

Since the digital water meter 1 has already been described above, a detailed description thereof will be omitted.

The outdoor meter reader 10 is connected to the digital water meter 1 by wire or wirelessly to obtain meter reading data on the amount of tap water used by the digital water meter 1 .

The outdoor meter reader 10 receives meter reading data from the digital water meter 1 through wired or wireless communication, stores the received meter reading data in a memory, and then transmits the meter reading data to the repeater 20 and the collector 30 through a wireless communication module. It is transmitted to the management server 40 through.

The repeater 20 receives meter reading data from the outdoor meter reader 10 and transmits it wirelessly.

The repeater 20 is a device that expands the communication range by eliminating the shadow area between the outdoor meter reader 10 and the collector 30, and serves to transmit the meter reading data of the outdoor meter reader 10 to the collector 30. .

The collector 30 receives meter reading data from the repeater 20 and transmits it to the management server 40 wirelessly.

The collector 30 receives meter reading data of the outdoor meter reader 10 through the repeater 20 and collects and stores the data.

The management server 40 receives meter reading data from the collector 30 and stores and manages the data in a database.

The management server 40 may receive meter reading data transmitted from the collector 30 through a communication module, store it in a database, and then provide related data to a place where it is needed.

Through such a meter reading system using a digital water meter, a meter reader can remotely read a water meter without going around and manually reading the water meter, and the inconvenience of having to manually input meter reading results into a computer can be solved.

The present invention is not limited to the above embodiments, and the scope of application is diverse, and various modifications and implementations are possible without departing from the gist of the present invention claimed in the claims.

100: lower outer shell 110: inlet
120: outlet 130: strainer
140: flow area variable member 200: lower inner armor
200a: first lower inner armor 200b: second lower inner armor
210: inlet hole 220: discharge hole
230: support shaft 300: impeller
310: axis of rotation 320: wing
330: reflector 340: first foreign matter removal member
400: upper inner armor
400a: first upper inner sleeve 400b: second upper inner shell
410: second foreign matter removal member
500: PCB
600: laser sensor
700: LCD panel
800: cover
900: upper outer shell
1000: Cartridge for preventing backflow

Claims (8)

A lower outer shell 100 having an inlet 110 formed on one side so that the fluid flows in and an outlet 120 formed on the other side so that the fluid is discharged;
A lower inner armor 200 installed inside the lower outer armor 100 and having a plurality of inlet holes 210 and outlet holes 220 formed around the periphery;
An impeller 300 that is rotatably coupled to the inside of the lower inner armor 200 and has a plurality of wings formed to rotate through the pressure of the fluid;
An upper inner glove 400 installed on top of the lower inner glove 200 and formed of a transparent material to block the inflow of water;
PCB (500) installed inside the upper inner armor (400);
A laser sensor 600 connected to the PCB 500 inside the upper inner armor 400 to detect rotation of the impeller 300;
a measuring unit 500 formed on the PCB 500 and connected to the laser sensor 600 to measure the number of revolutions of the impeller 300;
an LCD panel 700 installed on the PCB 500 and connected to the measurement unit to output a measurement amount;
A cover 800 formed on the upper side of the upper inner glove 400 and covering the upper side of the upper inner glove 400;
An upper outer shell 900 coupled to the lower outer shell 100 to seal the opening of the lower outer shell 100;
A reflector 330 is provided on the upper surface of the plurality of wings 320 of the impeller 300,
Digital water meter, characterized in that the first foreign material removal member 340 is formed on the upper surface of the plurality of wings 320 of the impeller 300, the reflector 330 is not provided.
The method of claim 1,
A strainer 130 whose diameter decreases from one side to the other side is installed at the inlet 110 of the lower outer shell 100, and is inserted into the strainer 130, and flowing water whose cross-sectional area widens from one side to the other side A digital water meter, characterized in that the area variable member 140 is installed.
The method of claim 1,
The laser sensor 600,
A light emitting unit for irradiating a laser to the upper side of the impeller 300;
A light receiving unit that transmits a light receiving signal to the measurement unit whenever the laser reflected by the reflector 330 provided on the upper side of the plurality of wings 320 of the impeller 300 is received meter.
The method of claim 3,
The measuring unit,
Set the measurement reference value,
The digital water meter, characterized in that increasing the measurement amount output to the LCD panel (700) by 1 whenever the number of light reception signals transmitted from the light receiver meets the measurement reference value.
The method of claim 1,
A digital water meter, characterized in that the discharge port 120 of the lower outer shell 100 is provided with a cartridge 1000 for preventing backflow of water.
The method of claim 1,
On one side of the lower part of the upper inner armor 400,
When the second foreign matter removal member 410 is formed and the impeller 300 rotates, the upper surface of the impeller 300 and the reflector 330 are rubbed to remove foreign substances stacked on the upper surface of the reflector 330 A digital water meter, characterized in that.
The method of claim 1,
A digital water meter, characterized in that a waterproof coating agent is applied to the lower part of the upper inner case (400).
The digital water meter (1) according to any one of claims 1 to 7;
an outdoor meter reader (10) that is connected to the digital water meter (1) by wire or wirelessly and obtains meter reading data on tap water usage of the digital water meter (1);
a repeater 20 that receives meter reading data from the outdoor meter reader 10 and transmits the meter reading data wirelessly;
a collector 30 that receives meter reading data from the repeater 20 and wirelessly transmits it; and
An inspection system using a digital water meter, characterized in that it includes a; management server 40 that receives meter reading data from the collector 30 and stores and manages the meter reading data in a database.

Images