KR100789390B1 - Monitoring unit for fixed quantity supplier - Google Patents

Abstract

An apparatus for monitoring the input of chemicals is provided to improve the stability in supply of the chemicals, by using a water wheel rotated by weight of the chemicals so as to check whether the chemicals are supply in a normal state or in an abnormal state. A water wheel(10) is rotated by weight of chemicals. A detection unit(20) converts a variation of rotational rate of the water wheel into an electric signal. A central process unit analyzes the signal transferred from the detection unit to check whether the chemicals are supplied in a normal state or in an abnormal state. The detection unit includes a tachometer, an optical sensor, or a rotary encoder, which is connected to a rotary shaft of the water wheel. The tachometer converts the rotational operation of the rotary shaft into a pulse signal. The optical sensor analyzes the measurement light, which is applied to the rotary shaft and reflected from the rotary shaft. The rotary encoder converts the rotational operation of the rotary shaft into a digital signal.

Description

Chemical input monitoring device {monitoring unit for fixed quantity supplier}

1 is a perspective view showing the structure of a drug injection monitoring apparatus according to an embodiment of the present invention.

2 and 3 are exemplary views showing an operating state of the drug injection monitoring device according to an embodiment of the present invention.

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

10: water wheel 12: side circular plate

14: wing plate 16: axis of rotation

20: detection means 30: case

32: collecting plate 34: level measuring space

36: discharge space 38: partition

40: water gauge 401: measuring rod

402: medium measuring rod 403: short measuring rod

The present invention relates to a drug injection monitoring device, and more particularly, to a drug injection monitoring device for maintaining a stable quantitative of the drug supply.

In general, the water purification process for supplying tap water is to take raw water, such as river water, from the intake station, and then, by mixing chemicals mixed with a flocculant and a pH adjustment in a mixed paper, and then mixing the fine sludge. It consists of a series of stages of flocculation, flocculation of sludge, etc. in the sedimentation basin and removal of the sediment, which is sent to the metal filter paper and the purified water.

The chemicals used in the water purification process must be continuously metered, so a metering device is usually used.

The metering supply device is divided into pump type and water wheel (watermill) type according to the principle of operation.The pump type is a metering pump such as a reciprocating pump, a cam pump and a single screw pump. Although there is a difference, it is basically operated in a manner in which a rotor (plunger, cam) is driven in a stator which forms a volume by having an operating principle of changing the volume in the stator.

Therefore, in the case of a liquid medicine in which a liquid and a solid (precipitable solid material) component are mixed, a solid material is introduced and rubbed between the driving parts of the pump to be rubbed, so that parts such as the stator and the rotor are easily worn out, and thus, The problem arises in that the quantitative sharply deteriorates.

The water wheel type metering device is designed to solve the problem of the metering pump. The water tank is divided into a chemical inlet compartment and a chemical outlet compartment by a partition of a certain height, and above the reservoir. And a water wheel rotatably supported by the rotating shaft.

The drug inlet pipe is connected to the drug inlet pipe connected to the drug tank (not shown), and the drug outlet box is connected to the drug outlet pipe.

According to the conventional water wheel type metering supply device, the water wheel is rotated by the driving motor, the drug stored in the chemical inlet compartment is pumped up by the water wheel to flow down to the chemical outlet compartment.

Therefore, if the rotational speed of the water wheel is constant, the amount of the chemicals delivered from the chemical inlet compartment to the chemical outlet compartment for a predetermined time is also constant. Therefore, it can be seen that the quantitative property of the drug flowing out through the drug outlet pipe in the drug outlet compartment is maintained.

Therefore, according to the conventional water wheel type metering supply device, the phenomenon that the quantitativeity is not changed due to the wear of the parts like the metering pump does not occur.

On the other hand, the water treatment process begins with the introduction of chemicals from the mixed paper as described above, and proceeds a series of steps such as flocculation, sedimentation, sand filtration, and disinfecting chemicals. If not done, the water is contaminated up to the later stage.

Therefore, it is very important to stably inject chemicals for water treatment, and in order to monitor the state of chemical injection, the method of monitoring the flow of chemicals is also used. The following is the description.

First, the method of detecting the operation of the metering device is based on the characteristic that the metering pump or the water wheel type metering device is operated by a drive motor, which is connected to a separate control panel and electrically connected to the drive motor. It is equipped with an alarm device to notify the manager when the drive motor is not working so that immediate action can be taken.

And, the method of directly monitoring the flow state of the drug, by installing a CCTV to visually detect the discharge of the drug at a long distance, or by installing a flow meter in the chemical pipe to determine the flow rate of the drug changes.

However, in the case of the method of detecting the operation of the metering device, even if the drug stored in the drug storage tank is exhausted, or the pipes leading from the drug storage tank to the metering device are blocked, the drug is not supplied. The operation is made, there is a problem that may not detect the actual supply state of the drug.

In the method of directly monitoring the flow of chemicals, in the CCTV method, the manager must always grasp the flow of the chemical through a monitor, which is difficult to manage. In the case of the flow meter method, the chemical contains a lot of bubbles. If the sediment is tangled in the sensor portion, there is a problem such as difficult to accurately detect.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to provide a drug input monitoring device that the risk of malfunction is largely solved by grasping the supply state of the drug using the water wheel rotated by the load of the drug discharged It is done.

Drug injection monitoring device provided to achieve the above object, the water wheel is installed to rotate up and down, and receives the medicine falling from the top and rotated by the load of the drug; Detecting means for detecting a change in rotational speed of the water wheel and converting the water wheel into an electrical signal; It comprises a central processing unit for analyzing the signal transmitted from the detection means to determine the abnormal state of the drug supply state and perform an alarm operation.

The water wheel is a shape in which a plurality of wing plates are radially interposed between a pair of side circle plates, and the diameter of the side circle plates is longer than the length of the wing plate.

Each vane is made of different colors to visually easily identify the rotation of the water wheel.

The water wheel is rotatably supported by a rotating shaft which is mounted at the center thereof and rotates together with the water wheel, and the rotating shaft has a cantilever shape in which the diameter of the center portion is larger than the diameter of both ends.

The detection means may be connected to a rotation axis of the water wheel and a tachometer that pulses the rotation operation of the rotation axis, or a measurement light connected to the rotation axis of the water wheel to scan measurement light and reflected on the rotation axis. A light sensor for analyzing or a rotary encoder connected to the rotating shaft of the water wheel to digitally signal the rotation operation of the rotating shaft.

The drug input monitoring apparatus according to the present invention, the water level measurement space by the water level measurement space having a lower surface than the space in which the water wheel is arranged so that the medicines dropped through the water wheel is collected, and the bottom of the communication hole formed in the partition is measured Partly blocked with the space and partitioned into a discharge space formed with a discharge hole on the bottom, includes a case in which the water wheel is installed.

Drug injection monitoring device according to the present invention is installed in the water level measurement space of the case comprises a water level meter for measuring the water level of the medicine collected through the water wheel.

The level gauge is a structure in which a plurality of measuring rods having different lengths are combined, and the lower ends of each measuring rod are arranged to have different heights to determine the level of the medicine according to whether the chemical and the specific measuring rod are in contact with each other.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3.

Drug injection monitoring device according to the present embodiment, as shown in Figure 1 is installed to rotate up and down as shown in Figure 1 waterwheel 10 is rotated by the load of the medicine to receive the medicine falling from the top down, and the waterwheel ( Detecting the change in the rotational speed of 10) and converting it into an electrical signal, and by analyzing the signal transmitted from the detection means 20 to determine the abnormality of the drug supply state and to perform an alarm operation It comprises a central processing unit (not shown).

The water wheel 10 has a shape in which a plurality of wing plates 14 are radially interposed between a pair of side circle plates 12, and the diameter of the side circle plates 12 is greater than the length of the wing plate 14. It is made of a long structure, each wing plate 14 is made of different colors to visually easily grasp the rotation operation of the water wheel (10).

The water wheel 10 is rotatably supported by a rotation shaft 16 mounted at the center thereof, and is formed in the case 30 as described below. The rotation shaft 16 includes a case ( 30 is a cantilever structure that supports the water wheel 10 by penetrating one side of the water wheel 10 and rotates with the water wheel 10, and is supported by the bearing 181 in the support bracket 18 attached to the outside of the case 30. It is rotatably supported.

In addition, the rotating shaft 16 has a diameter of the central portion is the largest, the diameter gradually decreases while going to both edges.

The detection means 20 is connected to the rotary shaft 16 of the water wheel 10, the tachometer (tachometer) to pulse the rotation operation of the rotary shaft 16, or the rotary shaft 16 of the water wheel 10 A light sensor that scans the measurement light with respect to the rotating shaft 16 and analyzes the reflected measurement light, or a rotary that is connected to the rotating shaft 16 to digitalize the rotation operation of the rotating shaft 16. It consists of an encoder (rotary encoder) or the like.

The detecting means can be used as long as it can be connected to the rotating shaft 16 to measure its speed and to signal it.

In addition, the case 30 has a water level measuring space 34 having a lower surface than a space in which the water wheel 10 is disposed so that medicines separated by the water wheel 10 are collected, and the water level measuring space ( It is partially blocked by 34 and partition 38, and is divided into discharge space 36 in which discharge hole 36a is formed at the bottom thereof.

Here, a notch groove 38a is formed at an upper end of the partition 38, and a communication hole 38b having a predetermined diameter communicating with the water level measurement space 34 and the discharge space 36 is formed at the lower end.

The bottom surface 301 of the space in which the water wheel 10 of the case 30 is disposed has a shape that is gently inclined toward the water level measurement space 34.

In addition, the height of the case 30 is formed higher than the lower end of the water wheel 10, the upper side of the case 30 collects the drug discharged from the drug transport pipe 5 to the water wheel 10 to flow out A water collecting plate 32 is provided.

In addition, the drug input monitoring device according to the present embodiment, the water level meter 40 which is installed in the water level measurement space 34 of the case 30 and can measure the water level of the medicine collected through the water wheel 10 It is made to include.

The water level gauge 40 is a structure in which a plurality of measuring rods having different lengths are combined, specifically, the long measuring rod 401 having the longest length, the medium measuring rod 402 having the medium length, and the short measuring length shortest. It is preferable that the rods 403 are combined, and the lower ends of each measuring rods are differently arranged at different heights so as to determine the level of the medicines depending on whether the chemicals are in contact with the specific measuring rods.

Referring to the operation of the drug injection monitoring device according to the present embodiment configured as described above are as follows.

First, as shown in FIG. 2, the medicine flowing through the chemical transport pipe 5 connected to the metering supply device is discharged and collected in the water collecting plate 32, and flows down from the water collecting plate 32 to the water wheel 10. It will hit the wing plate (14).

Therefore, the water wheel 10 is rotated by the downward pressure of the wing plate 14 by the load of the chemicals falling, and the rotary shaft 16 for supporting the water wheel 10 also waterwheel 10 Will rotate together.

The detecting means 20 connected to the rotating shaft 16 measures the rotating speed (rotating speed of the water wheel) of the rotating shaft 16 and transmits a signal according to the central processing unit, and the detecting unit 20 in the central processing unit. By analyzing the signal transmitted from the continuous determination of the normal dosage of the drug input.

That is, in the central processing unit, when the rotation speed of the water wheel 10 becomes slower or faster, it is determined that the amount of chemicals supplied per unit time is changed, and the rotation speed variation of the water wheel 10 is set to a predetermined standard. In case of deviation, alarm signal and so on will be activated by the administrator.

Therefore, according to this embodiment, since the final discharge amount of the chemical is measured, the abnormal state of any case including the abnormality of the fixed-quantity supply device, the clogging of the pipe, and the like is not missed.

In addition, according to the present embodiment, due to the structure of the water wheel 10 having a larger diameter of the side circular plate 12 than the length of the wing plate 14, a large amount of chemicals are supplied at a time so that the chemicals are supplied to each wing plate 14. Even if it overflows from one catchment compartment partitioned by the medicine, the medicine does not overflow outside of the side circular plate 12, and moves to the next catchment compartment along the rotational direction of the water wheel 10, so that all chemicals transferred are not missed. It is to be used as the rotational power of (10).

Therefore, the chemical supply amount change and the rotational speed change of the water wheel 10 more accurately match.

According to the present embodiment, the water wheel 10 can be easily separated and maintained from the case 30 due to the characteristics of the cantilever-shaped rotating shaft 16, and the diameter of the middle portion of the rotating shaft is larger than the edge, so that the water wheel 10 The detection means 20 is protected from the medicine because the drug passing through) cannot move toward the detection means 20 on the rotating shaft 16.

Further, due to the shape characteristic of the case bottom surface 301, since the medicine dropped down through the water wheel 10 flows down to the water level measurement space 34 side, the phenomenon such as stagnation and accumulation on the case bottom surface 301 is caused. Is prevented.

On the other hand, in using the chemical injection monitoring apparatus according to the present embodiment, by directly installing above the water purification tank, the chemicals collected in the water level measurement space 34 via the water wheel 10 is notched groove of the partition 38. It is most preferable to flow into the discharge space 36 through the 38a or the communication hole 38b, and then discharged below the discharge space 36 through the discharge hole 36a to be directly introduced into the water treatment tank. Depending on the structure, it may be necessary to be installed at a position spaced apart from the water purification tank, in which case it is necessary to connect the connection pipe 50 to the discharge space 36 of the case 30 so that the chemicals are transferred to the water purification tank.

Therefore, even in this case, even if the state of the chemical input determined through the operation of the water wheel 10 is normal, a situation in which the chemical input state is substantially not smooth due to the connection pipe 50 being blocked. Although this may occur, the present embodiment can also grasp such a situation, which will be described below.

The chemicals dropped through the water wheel 10 are first introduced into the discharge space 36 through the water level measurement space 34 and then discharged, and in the normal state in which the connection pipe 50 is not blocked, the chemicals are moved to the water level measurement space 34. Since the ratio of the amount of chemicals introduced and the amount of chemicals exiting the discharge space 38 through the communication hole 38b of the partition 38 is appropriate, the water level measurement space 34 maintains a constant low water level, and the water level gauge 40 Drugs are simultaneously detected by the long measuring rod 401 and the medium measuring rod 402. Therefore, it is determined that the medicine is normally supplied.

And, in the abnormal state in which the drug is not properly discharged from the discharge space 36 due to clogged transfer pipes, the amount of chemicals going out into the discharge space 36 is small compared to the amount of chemicals flowing into the water level measurement space 34. The amount of chemicals stored in the space 34 increases, and the chemicals are also detected by the measuring rod 403 of the water gauge 40. Therefore, it is determined that the drug supply is not normal, and the manager takes action.

Finally, when the amount of chemicals introduced into the level measurement space 34 is less than the normal value, the discharge space 36 through the communication hole 38b of the partition 38 compared to the amount of the chemicals introduced into the level measurement space 34. Because of the large amount of chemicals exiting, the amount of chemicals stored in the water level measuring space 34 is reduced, and the chemicals are detected only by the long measuring rods 401 of the water level gauge 40.

Of course, if the drug supply amount is less than the normal because the speed of the water wheel 10 in the process of passing through the water wheel 10, this problem through the speed change of the water wheel 10 prior to the water gauge 40 It is generally understood that the water level gauge 40 is utilized in consideration of the case where the speed change of the water wheel 10 is not accurately detected due to a malfunction of the detection means 20.

In addition, according to the present embodiment, as described above, since the height of the case 30 is configured to be higher than the lower position of the water wheel 10, an excessively large amount of chemical is discharged through the discharge space 36. In the case where the water level measurement space 34 is supplied to the water level measuring space 34, the water level of the stored medicine exceeds the lower end of the water wheel 10 as shown in FIG. 3 so that the lower portion of the water wheel 10 is locked under the stored medicine. do.

Therefore, the water wheel 10 is not rotated by the resistance of the drug, it is also quickly grasp the abnormal state in which the drug is excessively supplied.

On the other hand, the situation in which the operation of the water wheel 10 is stopped is normal to be detected by the detection means, but sometimes the abnormality of the detection means 20 occurs to properly grasp the operation of the water wheel 10 It can also be expected, but at this time, because the wing plate 14 of the water wheel 10 has a different color, the water wheel 10 can be easily visually checked because the water wheel 10 is rotated. 10) By using a method such as installing a CCTV camera near the water wheel 10 can be more sure whether the normal rotation.

According to the present invention as described above, by using the water wheel rotated by the load of the drug discharged has the advantage that the supply of the drug is more reliably grasped to increase the stability of the drug supply.

Claims (10)

A plurality of wing plates are radially interposed between a pair of side circular plates, and the diameter of the side circular plates is longer than that of the wing plates. Each wing plate is made of different colors to visually easily identify the rotation of the water wheel, The diameter of the center portion is rotatably supported by a rotating shaft formed in a cantilever shape larger than the diameter of both ends. A water wheel installed to rotate up and down and rotated by a load of the medicine to receive the medicine falling from above; Detecting means for detecting a change in the rotational speed of the water wheel and converting it into an electrical signal; A central processing unit analyzing the signal transmitted from the detecting unit to determine whether there is an abnormal state of the medicine supply state and to perform an alarm operation; Drug injection monitoring device comprising a. delete delete delete The method of claim 1, wherein the detecting means It is made of a tachometer (tachometer) is connected to the rotary shaft of the water wheel to pulse the rotation operation of the rotary shaft Drug injection monitoring device characterized in that. The method of claim 1, wherein the detecting means It is made of a light sensor connected to the axis of rotation of the water wheel to scan the measurement light on the axis of rotation and to analyze the reflected measurement light Drug injection monitoring device characterized in that. The method of claim 1, wherein the detecting means A rotary encoder connected to the rotary shaft of the water wheel to digitalize the rotary operation of the rotary shaft; Drug injection monitoring device characterized in that. The method of claim 1, A water level measurement space having a bottom surface lower than a space in which the water wheel is disposed so that the medicines dropped through the water wheel are collected; A discharge space in which a communication hole is formed at the bottom and partially blocked from the water level measurement space, and a discharge hole is formed at the bottom thereof. As a structure divided into Drug injection monitoring device comprising a case in which the water wheel is installed. The method of claim 8, And a water level meter installed in the water level measuring space of the case and measuring the level of the medicine collected through the water wheel. 10. The method of claim 9, wherein the level gauge Combination of a plurality of measuring rods of different lengths, The lower ends of each measuring rod are arranged at different heights to determine the level of the medicine depending on whether the chemical is in contact with the specific measuring rod. Drug injection monitoring device characterized in that.

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