KR101939963B1 - Non-powered Filtration Apparatus easy to Back-wash - Google Patents

Abstract

The present invention relates to a filter medium for filtering a water to be treated by filtration in a filter having a complex filter medium layer for a predetermined period of time and then filtering the filter media for removing impurities collected in the filter medium layer, And a microfluidic device composed of an injection nozzle and an impeller to uniformly distribute the microbubbles and uniformly flow into the filter net connected to the lower support plate, thereby ultimately forming a multi-layered filtration layer formed on the lower support plate And more particularly, to a non-powered filter that facilitates backwashing for cleaning the filtration layer by causing an expansion flow.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a non-powered filtration apparatus,

The present invention relates to a filter for filtering suspended solids and fine solid substances contained in a water to be treated, filtering the filter media for a predetermined period of time in a filter provided with a composite filter medium layer, periodically washing the impurities collected between the filter media, . And more particularly, to a filter material cleaning apparatus that more easily separates solid matter accumulated in a filter medium layer from filter media and a filter material layer to improve backwash efficiency of the filter.

Generally, a filtration process is a process of introducing water to be treated containing a suspended substance into a filtration device to discharge clean treated water from which suspended substances have been removed. The suspended substance in the treated water is sieved , Precipitation, inertial collision, blocking, adsorption, aggregation, etc., and discharging only clean water to the treated water.

When the filtration process is continued, the air gaps in the filtration layer are gradually filled with floating substances and the filtration resistance is increased, so that the filtration process can no longer be continued. In this case, washing water and air are injected, A washing process is required to exclude it.

In general, the filter used in the water treatment process can be classified into simple filtration treatment and adsorption filtration treatment. It is divided into a downflow system that flows from the top to the bottom according to the flow direction of the fluid flowing into the filter and an upward flow system that flows from the bottom to the top, and can be classified into gravity type and pressure type depending on the pressure.

Generally, in the cleaning method for cleaning the filtration layer filled in the filter, it is common to set a predetermined time interval and perform the cleaning according to the interval. However, when the cleaning period is set short, the consumption amount of the washing water is increased, There is a problem that the amount of the filtering material is large and the washing can not be performed cleanly.

Korea Registered Utility Model No. 20-0437511 Korea Registered Utility Model No. 20-0410182

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems described above, and it is an object of the present invention to provide a filtration apparatus capable of cleaning a suspended particulate matter remaining between complex filtration layers by expanding and flowing a composite filtration layer in a filter using fine bubbles supplied from a non- In order to provide a filter capable of being cleaned using a non-powered micro-bubble supplying device that improves filtration performance and reduces the consumption of washing water, the micro-bubbles supplied are not uniformly distributed in the filter, There is a problem that the efficiency of cleaning is not remarkably improved due to flocculation, so that the problem has to be solved. Therefore, it is aimed to improve the efficiency of backwashing by installing the spray nozzle for water flow so that the supplied fine bubbles can be supplied uniformly without being biased and allowing the impeller to rotate simultaneously with the rotation of the water stream.

In order to accomplish the above object, the present invention provides a method of cleaning an upper filtration membrane, comprising the steps of: selecting an upflow type cleaning method; expanding and flowing a complex filtration layer in a filter using fine bubbles supplied from a non- The present invention is to provide a filter capable of backwashing by using a non-powered micro-bubble supplying device that improves filtration performance through washing of suspended matters and reduces consumption of backwash water.

In addition, a water-circulation type spray nozzle and an impeller are installed so that the supplied micro-bubbles can be uniformly dispersed in the lower portion of the filter, so that the minute bubbles supplied from the injection nozzle rotate simultaneously with the rotation of the water, And to improve the backwashing efficiency of the filter material layer by providing a structure for uniformly distributing and supplying the filter material.

As described above, according to the present invention, the microbubbles supplied from the non-powered micro-bubble supplying device during backwashing are used to inflate and flow the composite filtration layer in the filter, thereby effectively cleaning the suspended particulate matter remaining between the composite filtration layers in a short time. The filtration performance can be improved and the amount of backwash water consumed can be reduced. In addition, the operator can easily handle and operate the apparatus, and the power consumption can be reduced.

1 is a perspective view of a non-powered filter easy to back wash according to an embodiment of the present invention.
2 is a partial cut-away side view of a non-powered filter easy to back wash according to an embodiment of the present invention.
3 is an enlarged perspective view of a bubble dispensing apparatus according to an embodiment of the present invention.
4 is an enlarged perspective view of the filter net shown in Fig.

The non-powered fine bubble supplying device 240, which is applied to the non-powered filter for easy backwashing according to the present invention, includes a venturi tube inlet 241, a venturi tube outlet 243 and a solenoid valve 244 for controlling the venturi pipe central intake port 242 for ventilating the outside air and the venturi pipe 244 for supplying the backwash water to the venturi pipe 244, A bubble distributor 400 is installed in the lower end plate 130 and a filter net 500 of a cylindrical mesh structure is installed in the lower support plate 500. In order to effectively distribute the fine bubbles 245, And a composite filtration layer 520 is stacked on the lower support plate 500.

Hereinafter, preferred embodiments of a non-powered filter capable of easily backwashing according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a non-powered filter easily backwashable according to an embodiment of the present invention, FIG. 2 is a partial cutaway side view of a non-powered filter easy to backwash according to an embodiment of the present invention, FIG. 4 is an enlarged perspective view of the filter net shown in FIG. 2; FIG.

As shown in FIGS. 1 and 2, a front pipeline 200 installed outside the non-powered filter 100, which is easy to back wash according to the present invention, And is configured to be able to control the flow by the solenoid valves 1 to 5 (310, 320, 330, 340, 350), and includes a water inlet port 210 to be treated and an outlet port 250 of the treated water There is a discharge port 260 for discharging the treated water inside the filter 100 and the object water or the backwash water to the outside during the backwashing or the backwashing to generate the minute bubbles 245 in the backwash, The micro bubble supplying device 240 for supplying the micro bubble supplying device 240 is branched downward at the middle portion of the connection pipe between the object water inlet port 210 and the solenoid valve 1 310 to supply the backwashing water inlet port 230, A solenoid valve 3 (183) is provided at the rear end of the bubble supplying device (240). The fine bubble supplying device 240 includes a venturi tube inlet 241, a venturi tube outlet 243, and a venturi tube central inlet 242 for venting the outside air, the outlet of the backwashing water inlet and the inlet of the outlet being in the form of a venturi tube. And a solenoid valve 244 for controlling the venturi tube central intake port 242. When the solenoid valve 244 is opened and the object water flowing through the backwash water inlet 230 and the venturi tube central intake port 242 are opened, The micro bubbles 245 are generated by being mixed with the external air supplied through the filter 100 and introduced into the filter 100 through the center of the bottom surface of the filter 100. The electromagnetic valve 2 320 is installed through the electromagnetic valve 1 310 and the branch pipe 320 is connected to the inside of the filter 100 by branching at the middle of the connection pipe between the electromagnetic valve 1 310 and the electromagnetic valve 320, A hopper 220 is coupled to an end of the hopper 220 at an end thereof and a hopper filtering net 221 is attached to an upper end of the hopper 220. The hopper filter network 221 functions to prevent the filter media from being mixed with the washing water during backwashing, thereby preventing loss of filter media. A solenoid valve 4 340 is installed through the solenoid valve 3 330 and a pipe for the drain is branched down in the middle of the connection pipe between the solenoid valve 3 330 and the solenoid valve 4 340, And the end of the pipe extending through the solenoid valve 5 (350) becomes the discharge port 260. The solenoid valve 5 (350) An air vent 270 for discharging the internal air of the filter 100 is installed on the upper side of the filter 100 and a pipe connected to the inside of the filter 100 is connected to the end of the filter 100. In the filter 100, The pipe extending from the elongated pipe and the air vent 270 and extending to a predetermined length and bent downward is connected to the pipe extending through the electromagnetic valve 2 320 in a T- And is installed in branch connection between the valve 5 (350) and the discharge port (160). Also, a pipe connected to and connected to the center bottom surface of the lower end plate 130 is installed and branched at the front end of the solenoid valve 5 (350).

An observation window 140 is installed on the outer surface of the main body 110 of the filter 100 so that the inside of the filter 100 can be seen and a manhole 150 is installed on one side of the outer surface of the upper end plate 120 A manhole 170 is provided on one side of the outer lower side of the main body 110 and a manhole 160 is provided on one side of the outer surface of the lower rigid plate 130 so as to be utilized when necessary for internal work.

The lower end plate 130 is provided with an injection nozzle 410 rotated by water pressure and air bubbles flowing through the minute bubble supplying device 240 and the injection nozzle 410 The bubble dispenser 400 includes a bubble dispenser 400 coupled to the upper side of the main body 110 and configured to rotate by a force applied from the injection nozzle 410, And a plurality of filtering nets 510 are coupled to the lower supporting plate 500. The upper supporting plate 500 is provided with a composite filtration layer A sand layer 523 is formed on the gravel layer 524, an anthracite layer 522 is formed on the sand layer 523, and an activated carbon 523 is formed on the anthracite layer 522, Layers 521 are stacked and configured.

The solenoid valve 1 (310) and the solenoid valve 4 (340) are in the open state, and the solenoid valve 2 (320) and the solenoid valve 3 The solenoid valve 330 and the solenoid valve 5 350 are kept closed. When the water to be treated flows in through the water inlet 210 to be treated, the water passes through the electromagnetic valve 1 (310) and passes through the hopper inlet / outlet 222 at the upper end of the hopper 220, And is stored in the upper space of the filtration layer 520. The treated water flowing into the filter 100 is filtered while passing through the activated carbon layer 521, the anthracite layer 522, the sand layer 523 and the gravel layer 524, The filtration process is completed through the filter network 510 through the dividing hole 515 and the outer mesh network 511, the horizontal spray hole 513 and the inner mesh network 512 formed in the body, And is discharged to the outside through a pipe connected to the center of the bottom surface of the lower end plate 130, and is discharged to the outside through the open solenoid valve 4 (340) and the outflow port (250). If the filtration process is continued, the filtration performance of the complex filtration layer 520 is lowered due to the contaminants flowing into the complex filtration layer 520. The process for recovering the reduced filtration performance is a cleaning process of the composite filtration layer 520, For this purpose, an upflow type washing method is adopted, which is called backwashing or backwashing.

The solenoid valve 2 (320) and the solenoid valve 3 (330) are in the open state and the solenoid valve 1 (310), the solenoid valve 4 (340), and the solenoid valve 5 State. A large number of minute bubbles are contained in the processing object water as the number of processing objects flowing through the processing object water inlet 210 passes through the minute bubble supplying device 240, 130 to the inside of the filter 100 through the bubble dispensing apparatus 400 installed at the center bottom. In this process, the injection nozzle 410 of the bubble dispensing apparatus 400 is rotated by the inflow pressure and rotates the impeller 420 while spraying the object bubble and the minute bubbles 245, and the impeller 420 Is uniformly distributed to the central holes of the large number of the filtering nets 510 installed on the lower supporting plate 500. The object water containing the large amount of microbubbles 245 introduced therein flows through the filtration net 510 and sweeps and flows the complex filtration layer 520 while simultaneously discharging foreign matter accumulated in the complex filtration layer 520 The backwash water containing the foreign substances generated in the process flows through the hopper inlet / outlet port 222 of the hopper 220 located at the upper side of the filter 100 and discharged to the outside through the outlet port 260 of the front pipe 200 do. At this time, in the process of backwashing and returning to the normal filtration state, the filter material constituting the composite filtration layer 520 has a specific gravity The gravel layer 524 is first lowered to the bottom of the lower support plate 500 and then the sand layer 523, the anthracite layer 522 and the activated carbon layer 521 are successively deposited in order to form a normal composite filtration layer 520 The suspended solids remaining in the filter 100 are discharged to the outside through the outlet 260 by opening the solenoid valve 5 350 to complete the cleaning of the complex filtration layer 520.

In the backwashing process, the bubble dispensing apparatus 400 according to the present invention is characterized in that, due to the centralized phenomenon of the bubbles generated in the conventional method of supplying only the fine bubbles 245 to the bottom of the filter 100, To solve the problem of filter material cleaning which is caused due to the fact that the filter media constituting the complex filter layer 520 can not be expanded due to the inflow of the filter media 520, As shown in FIG. 3, by rotating the injection nozzle 410 using the pressure to which the water to be treated containing a large amount of the minute bubbles 245 flows, it is possible to perform non-operation, The water to be treated containing the bubbles 245 can be uniformly sprayed on the lower side of the lower support plate and the water sprayed on the upper side of the spray nozzle 410 The impeller (420), which is rotated, is also configured to complement the role of distributing the micro bubbles (245) over the entire surface without rotating.

In addition, in the conventional technique, the filtering net 510 is coupled to the socket attached to the lower supporting plate 500, which causes the fine bubbles 245 to flow into the filtering net 510 as interference or impediment. In order to solve this problem, as shown in FIG. 4, the socket on the lower side of the lower support plate 500 is removed, and the filter base 516 is brought into close contact with the upper surface of the lower support plate 500 And is fixed by the filter net bracket 517. The filter base 516 may be inserted into the filter base 516 to have a size enough to be inserted with the fixing protrusion of the filter base bracket 517. The filter base 516 may be rotated after passing through the filter base bracket 517.

In addition, if the filter net hopper 530 is installed so as not to overlap with the adjacent filter net hopper 530 such that a wide portion thereof faces downward in the corresponding holes of the lower support plate 500 coupled with the filter net 510, Effective additional configuration is possible.

The above description is only an example based on the technical idea of the present invention. Those skilled in the art will recognize that various modifications may be made by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims. For example, all embodiments described above may be freely combined and practiced by those skilled in the art, and any combination thereof should be construed as being included within the scope of the present invention.

100: filter 110:
120: upper end plate 130: lower end plate
140: observation window 150: manhole statue
160: Manhole 170: Manhole
200: front piping 210: target water inlet
220: hopper 221: hopper filter net
222: hopper inlet / outlet 230: backwash water inlet
240: fine bubble supplying device 241: Venturi tube inlet
242: Venturi tube central intake port 243: Venturi tube outlet
244: solenoid valve 245: fine bubble
250: outlet 260: outlet
270: Air vent 310: Solenoid valve 1
320: Solenoid valve 2 330: Solenoid valve 3
340: Solenoid valve 4 350: Solenoid valve 5
400: bubble distributor 410: injection nozzle
420: Impeller 500: Lower support plate
510: filter net 511: filtration mesh net
512: internal mesh network 513: horizontal split ball
514: Filter cover 515: Vertical split ball
516: filter base 517: filter net bracket
518: filter net assembler 520: composite filter layer
521: activated carbon layer 522: anthracite layer
523: Sand layer 524: Gravel layer
530: Filter net hopper

Claims (3)

A non-powered filter for easily washing back the filter material constituting the complex filtration layer (520) for filtering the filter (100)
A fine bubble supplying device 240 having a venturi tube inlet 242 and a solenoid valve 244 controlling the venturi tube inlet 242 and the venturi tube inlet 241 and 243 branched from the inlet 210 to be treated;
At least one filtering net 510 coupled to the filter net base 516 by a filter net bracket 517 so as to be in close contact with an upper surface of a lower support plate 500 installed at a lower end of the filter 110 main body 110;
A composite filtration layer 520 formed by stacking filter media having different specific gravity on the upper side of the lower support plate 500 in the order of specific gravity to form at least one layer;
The micro bubble supplying device 240 is connected to the micro bubble supplying device 240 and is installed in a space formed between the lower end plate 130 and the lower supporting plate 500 in the filter 100, A plurality of injection nozzles 410 arranged to be rotatably inclined by the pressure inflow from the minute bubble supplying device 240 so as to be dispersed in the space and a plurality of impellers 420 which are coaxial with the injection nozzles 410 and are rotatable on the upper side A bubble distributing device 400 including the bubble distributing device 400;
And a filtering net hopper (530) downwardly corresponding to a hole of the filtering net (510) coupled to the lower supporting plate (500). The method according to claim 1,
A filter net assembler 518 having a size capable of penetrating the fixing protrusion of the filter net bracket 517 is formed in the filter net base 516 and the filter net assembler 518 of the filter net base 516 passes through the filter room bracket 517 Wherein at least one filter network (510) is provided which is rotatable and can be coupled to the lower support plate (500). delete

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