KR100726246B1 - Waterwheel type fixed quantity supply instrument - Google Patents

Abstract

A waterwheel type fixed quantity supply device which minimizes precipitation of solid materials onto the bottom of a chemical inflow chamber due to shape characteristics of a reservoir, and can use aeration means stably and economically is provided. A waterwheel type fixed quantity supply device comprises: a reservoir(60) of which an inner space is vertically divided into an overflow chamber(601), a chemical inflow chamber(602), and a chemical discharge chamber(603); a waterwheel(30) mounted on the reservoir; and a drive motor(44) for rotating the waterwheel. The overflow chamber and the chemical discharge chamber are disposed at left and right sides of the chemical inflow chamber, a chemical return pipe(604) is connected to the bottom of the overflow chamber, a chemical inflow pipe(605) is connected to the bottom(63) of the chemical inflow chamber, and a chemical discharge pipe(606) is connected to the bottom of the chemical discharge chamber. The chemical return pipe and the chemical inflow pipe are connected to a chemical tank to circulate overflown chemicals, and an overflow hole(62a) is formed in a partition(62) that divides the overflow chamber and the chemical inflow chamber such that the overflow chamber and the chemical inflow chamber are in communication with each other.

Description

Waterwheel type fixed quantity supply instrument

1 is a block diagram showing a water wheel type fixed amount supply device according to the prior art.

Figure 2 is an exemplary view showing the structure and operation of the waterwheel applied to the prior art.

3 is a plan view showing the structure of a water wheel type fixed amount supply device according to an embodiment of the present invention.

Figure 4 is a side cross-sectional view of Figure 3 showing the structure of the water wheel type fixed amount supply device according to this embodiment.

FIG. 5 is a cross-sectional view of FIG. 3 showing the structure of a fixed amount supply device based on a medicine supply compartment in this embodiment.

Figure 6 is an exemplary view showing the operating principle of the venturi tube constituting the non-powered aeration means in the present embodiment.

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

30: waterwheel 32: bucket

44: drive motor 46: reducer

60: reservoir 601: overflow compartment

602: drug inlet compartment 603: drug outlet compartment

604: chemical return piping 605: chemical inflow piping

606: chemical outflow pipe 62a: overflow hole

63: bottom 64: blocking plate

70: venturi tube 72: intake pipe

80: brush 90: water gauge

The present invention relates to a metering supply device, and more particularly, to a water wheel type metering supply device in which the metering of drug supply is stably maintained.

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 mix and mix chemicals in the mixed paper, and then to aggregate the fine sludge in the flocculation paper, and the sludge aggregated in the sedimentation basin. It is composed of a series of steps to precipitate the back and remove the precipitate to be sent to the metal filter paper and purified water.

Since the chemicals used in the water purification process must be continuously metered, for this purpose, quantitative pumps such as reciprocating type, cam type and single screw type have been used.

On the other hand, such a metering pump has a structural difference, but basically has a working principle of changing the volume in the case, the rotor (plunger, cam) is operated in a stator (case) to form a volume.

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, There arises a problem that the quantitative sharply deteriorates.

In order to solve this problem of the metering pump, the applicant has been devised a water wheel type metering supply device (Utility Model Registration No. 0369153).

In the conventional water wheel type metering supply device, as shown in FIG. 1, the water storage tank 10 having an inner space divided into a chemical inlet compartment 101 and a chemical outlet compartment 102 by a partition 12 having a predetermined height. ) And a water wheel 30 rotatably supported by a rotation shaft 20 disposed across the medicine inlet compartment 101 and the medicine outlet compartment 102 above the reservoir 10. Is done.

The drug inlet compartment 101 is connected to a drug inlet pipe 16 connected to a drug tank (not shown), and the drug outlet compartment 102 is connected to a drug outlet pipe 18.

The water wheel 30 is disposed in the chemical inlet compartment 101 is supported by the rotating shaft 20 and a plurality of buckets (32) having the same volume disposed equally spaced in the circumferential direction as shown in FIG. It is composed of a plurality of guide plates 34 provided on each side of the bucket (32).

The bucket 32 has a structure in which the upper surface is open so as to immerse liquid into the inside when it is rotated up and down in one direction, and one side surface of each bucket 32, the chemical outflow close to the rotation axis 20, that is, the center of rotation An opening 32a is formed toward the compartment 102, and the guide plate 34 is connected to the opening 32a to be connected to the drug outlet compartment 102 beyond the compartment 12 to open the opening 32a. The drug flowing out is configured to guide discharge into the drug outlet compartment (102).

The rotary shaft 20 is connected to each other by a drive transmission means such as a drive motor 40 and a chain 42 provided below the reservoir (10).

In addition, the conventional water wheel type metering device is provided in the bottom of the reservoir 10 through the chemical inlet compartment 101 and the chemical outlet compartment 102, the air having a plurality of air nozzles 501 at one end Aeration means comprising a pipe (50) and an air compressor (not shown) for supplying compressed air to the air pipe (50).

The operation of the conventional water wheel type metering feeder configured as described above is as follows.

First, the chemicals for water treatment are supplied in large quantities to the chemical inlet compartment 101 of the reservoir 10 through the chemical inlet pipe 16 using a water pump or the like.

The medicine stored in the medicine inlet compartment 101 is spun up by the bucket 32 of the water wheel 30 by the water wheel 30 is rotated by the drive motor 40, the drug is spun up As the bucket 32 rotates up, it flows down to the center of the bucket 32.

The chemical flowing into the center of the bucket 32 is leaked to the outside through the opening 32a formed on one side of the bucket 32 to flow down to the drug outlet compartment 102 through the guide plate 34.

Since each of the buckets 32 has the same capacity, theoretically, if the rotation speed of the water wheel 30 is constant, the amount of chemicals delivered from the drug inlet compartment 101 to the drug outlet compartment 102 for a predetermined time is constant. Done. Therefore, it can be seen that the quantitative property of the drug flowing out through the drug outlet pipe 18 in the drug outlet compartment 102 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.

In addition, according to the conventional water wheel type fixed amount supply device, since the compressed air is supplied through the air pipe 50 constituting the aeration means and injected through the nozzle 501, the chemical inlet compartment 101 and the chemicals of the reservoir 10 are provided. By continuously mixing the medicine in the outlet compartment 102, it is possible to prevent the phenomenon in which the solid matter contained in the medicine is precipitated to some extent.

However, according to the related art, although a phenomenon in which solid matter is deposited on the bottom of the reservoir by the aeration means is prevented to some extent, the volume of the chemical inlet compartment 101 is excessive compared to the area where the chemical is pumped up by the water wheel 30. Because of the large size of the drug is concentrated only in the area close to the water wheel (30).

In addition, since the reservoir 10 is a hexahedral shape forming the corners, the medicine is circulated evenly in the entire interior space of the chemical inlet compartment 101 and is not sprung by the water wheel 30, but the chemicals are accumulated at the corners so that the smoothness is smooth. There is no circulation.

Therefore, according to the prior art, a solid substance is precipitated and solidified at the bottom, in particular, the corner of the chemical inlet compartment 101 spaced apart from the water wheel 30 by a predetermined range or more, over time. If it is stopped, there is a problem that the drug introduced into the drug inlet compartment 101 is left without being completely discharged through the drug inlet pipe 16 to solidify at the bottom surface.

In the initial supply of the medicine, the medicine inlet compartment 101 is empty, and since there is no means for blocking the medicine that strongly rises upward from the medicine inlet pipe 16, the medicine is scattered to the outside of the reservoir 10 so that the surroundings are scattered. Messy problems can occur.

In addition, according to the prior art, the air pipe 50 and the air nozzle 501 constituting the aeration means are normally immersed in chemicals, and the air nozzle 501 is blocked by the solid material that is precipitated, and thus cannot function properly. There is also a concern that the air compressor must be operated to supply air, which causes a problem of high power consumption.

The present invention has been made to solve the above-mentioned conventional problems, and minimizes the precipitation of solid matter at the bottom of the drug inlet compartment due to the shape characteristics of the water tank, the water wheel type metering supply device capable of stable and economical use of aeration means It is for the purpose of providing.

Water wheel type fixed-quantity supply device is provided to achieve the above object, the internal space is divided into an overflow compartment, a drug inlet compartment, a drug outlet compartment, the drug return pipe is connected to the overflow compartment, the drug inlet compartment An inlet pipe is connected, and the drug outlet unit has a reservoir connected with a drug outlet pipe; A water wheel rotatably installed in the medicine inlet compartment and quantitatively transferring the medicine stored in the medicine inlet compartment to the medicine outlet compartment; It includes a drive motor for rotating the water wheel.

The bottom surface of the chemical inlet compartment of the reservoir is made of a curved shape with the same curvature and a large radius as the water wheel, and the chemical inlet pipe is connected to the center of the bottom surface of the chemical inlet compartment.

The chemical inlet compartment of the reservoir is provided with a blocking plate for preventing the chemicals discharged from the chemical inlet pipes from excessively soaring up and scattering, the bottom of the chemical inlet compartment is provided with a plurality of collision blocks to amplify the mixed state of the chemicals. .

And the present invention is interposed in the chemical inlet pipe, the diameter of the longitudinal central portion is gently reduced to become the minimum diameter and the diameter is gradually expanded to its original size, and is attached to the minimum diameter portion of the venturi tube Consists of the intake pipe communicating with the outside air, it comprises a non-powered aeration means for performing the aeration of the drug in the chemical inlet pipe using the pressure change in the venturi tube according to the flow of the chemical.

In another aspect, the present invention comprises a brush provided in the chemical inlet of the water tank, the brush to prevent the solid material is adhered to the water wheel by brushing its outer surface as the water wheel is rotated.

The brush is attached to one side of the reservoir and formed in a substantially "c" shape, the frame surrounding the leading edge and both side edges of the waterwheel, and a hair planted in the frame and in contact with the waterwheel.

The present invention, the water level meter is provided in the drug inlet compartment of the reservoir tank and measures the level of the drug stored in the drug inlet compartment, and connected to the water level and the level of the drug identified by the water level alarm is below or above the appropriate level alarm And a water level monitoring means composed of an alarm that emits a signal and a power circuit breaker that cuts off the power supply to stop the operation of the chemical supply pump when the level of the chemical exceeds an appropriate level.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 3 to 6. Like reference numerals refer to like elements throughout the art and detailed descriptions thereof will be omitted.

In the water wheel type metering supply device according to the embodiment of the present invention, as shown in Figure 3 and 4, the inner space is vertical to the overflow compartment 601, the drug inlet compartment 602, the drug outlet compartment 603 It comprises a divided reservoir 60, a water wheel 30 mounted on the reservoir 60, a drive motor 44 for rotating the water wheel (30).

The overflow compartment 601 and the drug outlet compartment 603 of the reservoir 60 are disposed on the left and right sides thereof with the drug inlet compartment 602 interposed therebetween, and a chemical return pipe on the bottom surface of the overflow compartment 601. 604 is connected, the drug inlet pipe 605 is connected to the bottom surface 63 of the drug inlet compartment 602, the drug outlet pipe 606 is connected to the bottom surface of the drug outlet compartment 603. .

The drug return pipe 604 is connected to a medicine tank (not shown) like the drug inflow pipe 605 so that the overflowed drug is circulated, and divides the overflow compartment 601 and the drug inlet compartment 602. An overflow hole 62a is formed at 62 for communicating the overflow compartment 601 and the medicine inflow compartment 602.

The drive motor 44 is preferably configured to be connected to the rotating shaft 20 of the water wheel 30 via the speed reducer 46.

And, as shown in Figure 5 the drug inlet compartment bottom surface 63 of the reservoir 60 is the same as the water wheel 30 and the curvature is made of a large radius curved surface, the drug inlet pipe 605 It is connected to the center of the chemical inlet compartment bottom surface (63).

The chemical inlet compartment 602 is provided with a blocking plate 64 for preventing the drug discharged from the chemical inlet pipe 605 to excessively rise up, the chemical inlet compartment bottom 63 of the water wheel 30 A plurality of collision blocks 65 for amplifying the mixed state of the drug is provided.

The blocking plate 64 is installed in such a manner that the side end is attached to the partition 62 separating the overflow compartment 601 and the drug inlet compartment 602, and is spaced apart from the discharge port of the drug inlet pipe 605. It is preferably disposed above, and the front and rear ends are preferably curved downward.

The collision blocks 65 are disposed in front and rear sides of the blocking plate 64, respectively, and have a triangular shape protruding from the bottom surface.

In the case of the overflow compartment 601, since it does not need to occupy a lot of space, the upper surface is opened so as to communicate with the chemical inlet compartment 602 only at a predetermined area centering on a portion connected to the chemical return pipe 604. It is preferable that the remaining part has a closed structure.

The water wheel 30 has a structure in which a plurality of buckets 32 and guide plates 34 are combined as in the related art (see FIG. 2).

In addition, the metering supply device according to the present embodiment performs the aeration of the drug in the chemical inlet pipe 605, and comprises a non-powered aeration means that does not require a separate power source for its operation.

The non-powered aeration means is interposed in the chemical inlet pipe 605, as shown in Figure 5, the diameter of the longitudinal central portion is gently reduced to become the minimum diameter and the diameter is gently expanded back to the original diameter 70 And an intake pipe 72 mounted at the minimum diameter portion of the venturi tube 70 to communicate with the outside air.

And the metering supply device according to the present embodiment further comprises a brush 80 for brushing the outer surface of the water wheel 30, the brush 80 is attached to one side in the reservoir 60 is approximately "c" It consists of a frame (82) (see Fig. 3) and the hair 84 (see Fig. 3) planted in the frame 82 to surround the front and both side edges of the water wheel 30, the hair 84 It is in contact with the wheel 30.

Referring to the operation of the metering device according to the present embodiment as described above are as follows.

First, the drug is supplied to the drug inlet 602 of the reservoir 60 through the drug inlet pipe 605, the bottom surface 63 of the drug inlet 602 in the form of a curved shape, the drug is stagnant Since there is no portion, such as a corner, the introduced medicine is circulated evenly by the water wheel 30 in the medicine inlet compartment 602 and is pumped up.

In addition, the introduced chemical flows in the chemical inlet compartment 602 by the rotation operation of the water wheel 30, while hitting the blocking plate 64 and the collision block 65 provided on the bottom surface 63 locally. Since the vortex is strongly formed, the medicine is stagnated in the medicine inlet compartment 602, and the phenomenon of solid matter contained in the medicine is greatly reduced in the medicine inlet compartment 602.

In this case, the collision block 65 has a triangular characteristic, and thus the mixing effect of the drug is improved because the drug does not form a corner space.

When the drug is initially introduced while the drug inlet compartment 602 is empty, the drug discharged from the drug inlet pipe 605 is blocked by the blocking plate 64 so as not to rise upward and scatter, and to both sides. It is dispersed and discharged so that it does not escape out of the reservoir. In addition, the chemicals dispersed by the blocking plate 64 again collide with the collision block 65 to be strongly mixed.

Then, when the supply of the drug is stopped, the drug remaining in the drug inlet compartment 602 is gathered to the center of the curved bottom surface 63 is neatly discharged through the drug inlet pipe 605.

In addition, when an excessively large amount of the drug is temporarily supplied and the level of the drug in the drug inlet compartment 602 becomes higher than a predetermined value, the drug supplied to the drug inlet compartment 602 overflows formed in the partition 62. It flows into the overflow compartment 601 through the hole 62a and is supplied back to the chemical tank through the chemical return pipe 604.

Therefore, the phenomenon that the quantitative quality of the medicine supplied to the water purification plant does not occur because the over-supplied medicine does not pass through the chemical outlet compartment 603 without passing through the water wheel 30.

In addition, according to the present embodiment, before the drug is introduced into the drug inlet compartment 602, it is aerated by the non-powered aeration means in the drug inlet pipe 605, which will be described below.

First, the chemical flowing through the chemical inlet pipe 605 is passed through the venturi tube 70, the flow rate is increased in the small diameter center of the venturi tube 70, accordingly the pressure in the venturi tube 70 Will be lowered (see Figure 6).

In addition, the outside air is sucked into the venturi tube 70 through the intake pipe 72 connected to the venturi tube 70 by such a pressure difference, and the aspirated action is performed by mixing the sucked air into the flowing chemical. will be.

In addition, according to the present embodiment, the water wheel 30 is brushed by the brush 80, thereby preventing the solid matter from adhering to the outer surface of the water wheel 30.

That is, when the water wheel 30 rotates, the hair 84 continuously sweeps the outer surfaces of both side plates and the bottom plate of the water wheel 30 so that the solid material contained in the chemical is contained on the outer surface of the water wheel 30. It will not adhere to (outer surface of each bucket).

The metering device according to the present embodiment is provided in the medicine inlet compartment 602, the water level meter 90 for measuring the level of the drug stored in the drug inlet compartment 602, and is connected to the water level meter (90) An alarm (not shown) that emits an alarm signal when the level of the medicine determined by 90) is below or above the appropriate level, and the drug supplying the medicine to the drug inlet compartment 602 when the level of the drug exceeds the appropriate level. It comprises a water level monitoring means composed of a power circuit breaker (not shown) to cut off the power supply to stop the operation of the supply pump (not shown).

The level gauge 90 of the water level monitoring means is a combination of a long measuring rod 901 having a long length, a medium measuring rod 902 having a medium length, and a short measuring rod 903 having a short length. 902 and 903 are mounted in the chemical inlet compartment 602 with the tip facing down.

Referring to the operation of the water level monitoring means is as follows.

First, when the detection of the medicine in the medicine inlet compartment 602 is made only by the long measuring rod 901, the low water quantity of the medicine is less than the appropriate value, the alarm connected to the water gauge 90 is operated, the manager The medicine inflow pipe 605 is blocked, or it is determined that an abnormality has occurred in the chemical supply pump for supplying the chemical, and then take action.

In the case where the detection of the medicine is performed by the long measuring rod 901 and the medium measuring rod 902 together in the medicine inlet compartment 602, the medicine is normally stored in a state where the low water quantity of the medicine is maintained within an appropriate value. It is judged that it is supplied.

If the detection of the medicine in the medicine inlet compartment 602 is also performed by the short measuring rod 903, the amount of the medicine has exceeded an appropriate value, and the medicine return pipe 604 is blocked, causing an overflow function. It's also not working properly.

In this case, a power circuit breaker (not shown) connected to the water level meter 90 is operated to cut off the power supplied to the chemical supply pump, thereby stopping the operation of the chemical supply pump, and the alarm is also actuated to take action by the administrator.

According to the present invention as described above, first, in the case of excessive supply of medicine to the drug inlet compartment in the nature of the overflow compartment and the drug return pipe is provided that the drug is overflowed through the water without the drug wheel It overflows to prevent the phenomenon that quantitation is impaired.

In addition, the bottom surface of the chemical inlet compartment is formed in a curved shape, the blocking plate and the collision block is provided on the bottom surface, the solids contained in the chemicals by strengthening the mixing phenomenon of the drug due to the rotation of the water circle Minimize the precipitation.

In addition, due to the nature of performing the aeration in the chemical inlet pipe using a venturi-type non-powered aeration means, the air nozzle is clogged as in the prior art does not occur, the aeration does not occur, the cost for aeration It does not take

Then, by continuously brushing the outer surface of the water wheel through the brush to prevent the solid material is adhered to the outer surface of the water wheel to suppress the phenomenon that the rotation speed of the water wheel is changed.

Claims (7)

The internal space is divided into an overflow compartment, a drug inlet compartment, and a drug outlet compartment.The overflow compartment is connected to the drug return pipe, the drug inlet compartment is connected to the drug inlet pipe, and the drug outlet compartment is connected to the drug outlet pipe. ; A water wheel rotatably installed in the medicine inlet compartment to quantitatively transfer the medicine stored in the medicine inlet compartment to the medicine outlet compartment; A driving motor for rotating the water wheel; Water wheel type metering supply device comprising a. The method of claim 1, The bottom surface of the chemical inlet compartment of the reservoir is made of a curved surface having the same curvature and a large radius as the water wheel, The drug inlet pipe is connected to the center of the bottom surface of the drug inlet compartment Water wheel type metering supply device characterized in that. The method of claim 2, The chemical inlet compartment of the reservoir is provided with a blocking plate to prevent the chemicals discharged from the chemical inlet pipe to rise up excessively to scatter. The bottom of the chemical inlet compartment is provided with a plurality of collision blocks to amplify the mixed state of the drug Water wheel type metering supply device characterized in that. The method of claim 1, It is interposed in the chemical inlet pipe, the diameter of the longitudinal central portion is gradually reduced to the minimum diameter and the diameter of the venturi tube is gradually expanded to the original again, Intake pipe which is mounted on the minimum diameter of the venturi tube and communicates with the outside air Consist of Including a non-powered aeration means for aeration of the drug in the chemical inlet pipe by using the pressure change in the venturi pipe according to the flow of the drug Water wheel type metering supply device characterized in that. The method of claim 1, Is provided in the medicine inlet compartment of the reservoir, Brush that prevents solid matter from adhering to the water wheel by brushing its outer surface as the water wheel is rotated Consists of including Water wheel type metering supply device characterized in that. The method of claim 5, The brush It is attached to one side of the reservoir and consists of “c” shape and consists of a frame surrounding the tip and both side edges of the water wheel, and a hair planted in the frame to contact the water wheel. Water wheel type metering supply device characterized in that. The method of claim 1, A water level meter provided in the medicine inlet compartment of the reservoir to measure the level of the medicine stored in the medicine inlet compartment, An alarm that is connected to the water level meter and emits an alarm signal when the level of the chemicals identified by the water level is below or above an appropriate level; Power breaker to cut off the power supply to stop the operation of the chemical supply pump when the level of the chemical exceeds the appropriate level Comprising water level monitoring means Water wheel type metering supply device characterized in that.

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