KR100984529B1 - Apparatus for continuous inflow filtering using the fiber and filtration filter with back washing function - Google Patents

Abstract

PURPOSE: A continuous inflow type filtering device using fiber and a filter with a reverse washing function are provided to improve filtering efficiency by continuously performing filtering processes. CONSTITUTION: A filtering process tub(10) includes a first outlet(12), a second outlet(13), and a suspended solid outlet(14). A first porous pipe is installed inside the filtering process tub to be connected to the first outlet. A first filter(20) has a fiber bundle(22) comprised of a plurality of yarns to surround the outer wall of the first porous pipe. A second porous pipe is installed inside the filtering process tub to be connected to the second outlet. A second filter(30) has fiber bundle comprised of a plurality of yarns to surround the outer wall of the second porous pipe. A flow path switching unit(40) selectively switches the discharge direction of the filtered water and the entry direction of the raw water.

Description

Continuous inlet filtration device using a fiber yarn and a filtration filter having a backwash function {APPARATUS FOR CONTINUOUS INFLOW FILTERING USING THE FIBER AND FILTRATION FILTER WITH BACK WASHING FUNCTION}

The present invention relates to a filtration device using a fiber yarn, and more particularly, to a filtration filter having a continuous inflow filtration device using a fiber yarn capable of continuously performing the filtration process and a backwashing function.

Wastewater generated in a general household or industrial site contains various sludges containing fine suspended substances, and is recycled or discharged after the first filtration treatment. The first filtered water is discharged after being filtered through an additional filtration process because the remaining suspended solids remaining in the filtration process remain.

The operation of the filtration apparatus to remove residual suspended matter in the primary filtration treated water is divided into a filtration process and a washing process. The filtration process is a process in which raw water containing suspended solids or treated water subjected to primary filtration is introduced into a filtration apparatus to discharge clean water from which suspended solids have been removed. In other words, only the clean water from which the suspended matter is removed is discharged.

If this filtration process continues, the voids in the filtration layer are gradually filled with suspended solids and the filtration resistance increases, leading to a state in which the filtration process can no longer continue. In this case, a washing process is required to exclude suspended solids trapped in the pores by injecting washing water and air. Therefore, the performance of the filtration device is determined by the removal efficiency of the suspended solids, filtration rate, filtration duration, washing water consumption, washing frequency and cleaning time.

On the other hand, as a filter medium for filling the filter layer, an inorganic granular material such as sand, anthracite, anthracite or the like has been mainly used. These media have the advantage of being easily available and the ability to remove particles smaller than the size of the voids formed by them, but the filter layer formed of such media has a limited space near the surface layer to capture suspended matter Since it causes a rapid increase in filtration resistance due to the occlusion of the pores, there was a problem that should be frequently washed.

In order to solve the disadvantage that the suspended matter is mainly captured in the vicinity of the surface of the filtration layer and frequent washing, a filtration device using fiber yarn as a medium has been proposed to further improve the performance of the filtration device.

Filtration apparatus using fiber yarns presses the fiber yarns with a piston to increase the density of the fiber yarns, and then the liquid component passes through the pores of the fiber yarns and is filtered while the treated water passes through the fiber yarns. Allow them to be captured.

In the filtration process using the fiber yarns, when the suspended matter accumulates in the pores of the fiber yarns, the liquid does not pass well. Thus, after moving the piston pressurizing the fiber yarn in the opposite direction to lower the density of the fiber yarn, it is washed to remove the accumulated suspended matter through the so-called backwashing process to allow the backwash water to flow in the opposite direction to the flow of the water to be treated. When the backwashing process is completed, the original filtration process is performed again.

However, in such a filtration method, a cylinder for pressurizing the fiber yarn in the washing tank and a power means for driving the cylinder must be separately provided, and thus, there are disadvantages in structure complexity and power consumption.

On the other hand, as a filtration device using fiber yarns, a method in which a plurality of fiber yarns are provided to surround the outer circumferential surface of the porous cylinder is used. In this method, by rotating the porous cylinder to one side by using the rotational force of the cylinder rod connected to one side of the porous cylinder, twisting the fiber yarn to increase the density of the fiber yarn, and then perform a filtration process. Then, when the suspended matter accumulates in the fiber yarn, the porous cylinder is rotated to the other side to loosen the twist of the fiber yarn, and the backwash water flows to perform the backwash process.

By the way, this porous cylinder rotation method has a problem that the fiber yarn is damaged by the twisting and unwinding of the fiber yarn, there is a disadvantage that requires a separate power device for driving the cylinder rod and the cylinder rod for rotating the porous cylinder. .

In addition, in the conventional method, since the backwashing process is performed by supplying the filtration tank through the filtered water discharge pipe discharged for the backwashing process, the filtration process for the raw water must be stopped during the backwashing process. .

SUMMARY OF THE INVENTION An object of the present invention for solving the problems of the background art is to form a plurality of entrances in the filtration treatment tank, and selectively control the inflow direction and the filtered water discharge direction of the raw water so that the raw water inlet and the filtered water discharge alternately to each entrance. The present invention provides a filtration filter having a continuous inflow filtration device using a fiber yarn and a backwashing function capable of simultaneously performing a filtration process and a suspended matter desorption process without stopping the filtration process for a backwashing process.

It is also an object of the present invention to provide a continuous inlet filtration apparatus using a fiber yarn to increase the filtration throughput by arranging the filtration filters in multiple rows in multiple stages.

Continuous inflow filtration device using a fiber yarn according to an aspect of the present invention for improving the problems of the background art, the first and second filtration treatment tank formed with a float discharge outlet at the bottom, the first entrance and A first filtration filter having a first porous tube installed inside the filtration tank so as to communicate with each other, a fiber bundle comprising a plurality of fiber yarns surrounding the outer wall surface of the first porous tube, and a second entrance to communicate with the second entrance; A second filtration filter having a second porous tube to be installed, a fiber yarn bundle composed of a plurality of fiber yarns surrounding the outer wall surface of the second porous tube, and installed at a front end of the first and second entrances, the first and second entrances; And a flow path switching means for selectively switching the raw water inflow direction and the filtrate discharge direction so that the raw water inflow and the filtered water discharge of the entrance and exit are alternately made.

Here, the flow path switching means is formed so that the raw water inlet and the filtered water discharge portion is formed and the first flow pipe connected to the first entrance and the raw water inlet or filtered water discharge alternately between the raw water inlet and the filtered water discharge portion. A first three-way valve to control, a second flow pipe formed with a filtrate discharge part and connected to a second inlet, and controlling raw water inflow or filtrate discharge into the second inlet between the raw water inlet and the filtrate discharge part alternately. And a second three-way valve.

And, it may be detachably fixed around one side of the porous tube, it may include a fiber yarn bundle fixing means for fixing one end of the fiber yarn bundle around one side of the porous tube.

In addition, the fiber yarn bundle can increase the filtration capacity as it is installed in a multi-stage structure in the first porous tube and the second porous tube.

In addition, a scattering prevention plate may be further provided at the center of the upper end of the float discharge port to prevent re-splashing of the float.

On the other hand, a filtration filter having a backwashing function according to an aspect of the present invention for improving the problems of the background art, a porous tube, a fiber yarn fixing means which is detachably fixed to the upper end of the porous tube, and fiber yarn fixing means It includes a fiber yarn bundle consisting of a plurality of fibers that one end is fixed and the other end is stretched to the bottom of the porous tube, the other end of the plurality of fibers in the filtration process in which fluid flows from the outside of the porous tube Is closely adhered to the outer wall of the porous tube, and in the backwashing process in which fluid flows from the inside of the porous tube to the outside, a plurality of fiber yarn other ends are spaced apart from the outer wall of the porous tube.

According to an embodiment of the present invention, the filtration process is continuously performed by performing a filtration process continuously by simultaneously performing a filtration process and a desorption process for removing suspended matter adhering to the fiber yarn, without stopping the filtration process for the raw water for the backwash process. There is an advantage to increase the efficiency.

1 is a block diagram of a continuous inlet filtration device using a fiber yarn according to an aspect of the present invention, Figure 2 is an exploded view showing in detail the first and second filtration filter of Figure 1, the floating of the incoming raw water Removes the suspended solids and the filtrate from which the suspended solids have been removed.

Referring to FIG. 1, the continuous inflow filtration apparatus using the fiber yarn according to one aspect of the present invention includes a filtration treatment tank 10, a first filtration filter 20, a second filtration filter 30, and And a flow path switching means 40.

The filtration tank 10 has a process chamber 11 in which a filtration process and a desorption process are performed, and a first entrance 12 and a second entrance 13 are formed at an upper portion of the processing chamber 11, and a floating material at the lower end thereof. An outlet 14 is formed. Here, each of the first and second entrances 12 and 13 may have one or more openings.

The treatment chamber 11 preferably has a conical shape in which the diameter decreases from the predetermined height toward the lower end so that the suspended matter can be accumulated in the float discharge port 14 side. Due to this conical shape, the separated floating material is lowered by the gravity action to accumulate on the floating water outlet 14 side along the lower side of the processing chamber 11. At this time, the floating floating material has a property to rise to the upper side according to the flow of raw water or filtered water inside the treatment chamber. Accordingly, in one aspect of the present invention, a scattering prevention plate 15 is further provided in the center of the upper end portion of the float discharge port 14 to prevent the float from re-flying above the processing chamber. In addition, the float discharge port 14 is provided with a float discharge control valve 16 for controlling the discharge of the float generated in the filtration process.

In addition, the upper end of the processing chamber 11 is formed with an air discharge port 17 for discharging the air generated inside the processing chamber 11 to the outside, the air discharge control valve for controlling the discharge of air to the outside of the air outlet (17) 18).

The first filtration filter 20 includes a first porous tube 21 and a fiber yarn bundle 22 and a fiber yarn bundle fixing means 23, and the second filtration filter 30 includes a second porous tube 31. And a fiber yarn bundle 22 and a fiber yarn bundle fixing means 23. At this time, in order to process a large amount of flow rate, a plurality of first entrances 12 and second entrances 13 above the processing chamber 11 are formed, and the first filtration filter 20 is formed at each entrance 12 and 13. By using the multiple arrangement type which installs and the 2nd filtration filter 30, respectively, a large amount of flow volume can be processed and filtration efficiency can be improved.

The first porous tube 21 is installed inside the filtration treatment tank 10, that is, the processing chamber 11 so as to communicate with the first entrance 12, and the second porous tube 31 communicates with the second entrance 13. It is provided in the filtration process chamber 11 so that it may be. Here, the first porous tube 21 and the second porous tube 31 is a plurality of through-holes 211 are regularly arranged, it may be made of synthetic resin or stainless steel.

The fiber yarn bundle 22 is installed to surround the outer wall surfaces of the first porous tube 21 and the second porous tube 31, and may be formed of a plurality of fiber yarns. At this time, the fiber yarn may be prepared by spinning the synthetic polymer PVA (Polyvinyl Alcohol) which is a hydrophilic material. For example, it contains more than 50% of Tow of 1-5 denier-thick Mono Filament Yarn in multiple strands, and any one of nylon / polyester / polyamide / acrylic Synthetic fibers in which spun 1-5 denier-thick mono filament yarns are mixed within 50% may be used.

Here, the fiber yarn bundle 22 may be installed in the first porous tube 21 and the second porous tube 31 in a two-stage or more vertical multistage structure when the flow rate is high in one stage or a treatment flow rate, thereby increasing the treatment flow rate. .

The fiber bundle bundle fixing means 23 is detachably fixed to the upper circumference of each of the first porous tube 21 and the second porous tube 31, and one end of the fiber yarn bundle 22 is disposed in the first porous tube ( 21) and the upper periphery of the second porous tube 31 serves to fix. At this time, the fiber bundle bundle fixing means 23 is a support member 231, the insertion hole 231a is formed so that one end of the fiber yarn bundle 22 is inserted, as shown in Figure 2, the insertion of the support member 231 A fixing ring 232 inserted into the hole 231a to fix the fiber bundle 22, and a cover for fixing the one end of the fiber bundle 22 to the support member 232 at an upper side of the support member 231; And a member 233.

As such, as one end of the fiber yarn bundle 22 is assembled to the fiber yarn bundle fixing means 23 on the upper side of each of the porous tubes 21 and 31, when the filtrate is discharged, the fiber yarn bundle 22 is angled. In close contact with the periphery of the porous tubes 21 and 31, when raw water is introduced, the other end of the fiber yarn bundle 22 is spaced apart from the outer wall surfaces of the first porous tube 21 and the second porous tube 31.

On the other hand, the flow path switching means 40 is provided at the front end of the first entrance 12 and the second entrance 13, so that the raw water inflow and filtered water discharge of the first entrance 12 and the second entrance 13 is alternately To achieve this, the raw water inflow direction and the filtrate discharge direction are selectively switched.

The flow path switching means 40 includes a first flow path pipe 41, a first three-way valve 42, a second flow path pipe 43, and a second three-way valve 44. The first flow pipe 41 has a first raw water inlet 411 and a first filtered water outlet 412 connected to the first entrance 12. The first three-way valve 42 is provided between the first raw water inlet 411 and the first filtered water outlet 412 to control the raw water inlet or discharge of the filtrate to the first outlet 12 alternately. The second flow path tube 43 has a second raw water inlet 431 and a second filtered water outlet 432 connected to the second entrance 13. The second three-way valve 44 is provided between the second raw water inlet 431 and the second filtrate discharge 432 to control the raw water inlet or filtered water discharge to the second inlet (13) alternately.

Hereinafter, the operation of the continuous inlet filtration device using the fiber yarn according to an embodiment of the present invention will be described with reference to FIGS.

Referring to FIGS. 3 and 4, the filtration treatment tank 10 is connected to and installed with a raw water storage tank 50 for supplying raw water to the first raw water inlet 411 and the second raw water inlet 431. A filtrate tank 60 for storing filtrate water discharged from the filtrate discharge part 412 and the second filtrate discharge part 432 is provided.

First, as shown in FIG. 3, the filtration process is performed by the first filtration filter 20, and the desorption process is performed by the second filtration filter 30.

Specifically, the first three-way valve 42 and the first inlet 12 is in communication with the first filtered water outlet 412, the second inlet 13 is in communication with the second raw water inlet 431 The direction of the second three-way valve 44 is controlled.

As a result, a desorption process is performed in the second filtration filter 30. That is, the raw water introduced through the second entrance 13 is introduced into the second porous tube 31. The raw water introduced into the second porous tube 31 is discharged into the process chamber 11 through the through hole formed around the second porous tube 31. Accordingly, the other end of the fiber yarn bundle 22 surrounding the outside of the second porous tube 31 is poured away from the outer wall surface of the second porous tube 31. In this process, the float adhering to the fiber yarn bundle 22 is detached and descends by gravity to accumulate toward the float outlet 14.

Conversely, the filtration process takes place in the first filtration filter 20. That is, the raw water discharged from the second porous tube 31 is introduced to the first porous tube 21 side, the fiber bundle 22 is in close contact with the outer wall surface of the first porous tube 21 by the introduction of raw water. , The fibers are denser. As the fibers are densified in this way, the suspended matter is trapped in the fiber bundle 22, and the filtered water from which the suspended matter is removed is introduced into the first porous tube 21. In addition, the filtered water introduced into the first porous tube 21 is discharged to the filtered water tank 60 through the first filtered water discharge part 412.

When such a filtration process by the first filtration filter 20 and the desorption process by the second filtration filter 30 progress for a predetermined time, a large amount of suspended matter accumulates in the first filtration filter 20 and the filtration efficiency is lowered. do.

Therefore, after a predetermined time, the desorption process is performed by the first filtration filter 20, and the filtration process is performed by the second filtration filter 30.

Specifically, the first three-way valve 42 and the first inlet 12 is in communication with the first raw water inlet 411, the second inlet 13 is in communication with the second filtered water outlet 432 The direction of the second three-way valve 44 is controlled.

As a result, a desorption process is performed in the first filtration filter 20. That is, the raw water introduced through the first entrance 12 is introduced into the first porous tube 21. The raw water introduced into the first porous tube 21 is discharged into the process chamber 11 through the through hole formed around the first porous tube 21. Accordingly, the other end of the fiber yarn bundle 22 surrounding the outer side of the first porous tube 21 is poured away from the outer wall surface of the first porous tube 21. In this process, the float adhering to the fiber yarn bundle 22 is detached and descends by gravity to accumulate toward the float outlet 14.

On the contrary, the filtration process is performed in the 2nd filtration filter 30 side. That is, the raw water discharged from the first porous tube 21 is introduced into the second porous tube 31 side, the fiber bundle 22 is in close contact with the outer wall surface of the second porous tube 31 by the introduction of raw water. , The fibers are denser. As the fiber yarns are densified in this way, the suspended matter is trapped in the fiber bundle 22, and the filtered water from which the suspended matter is removed is introduced into the second porous tube 31. The filtered water introduced into the second porous tube 31 is discharged to the filtered water tank 60 through the second filtered water discharge part 432.

When the filtration and desorption processes of the first filtration filter 20 and the second filtration filter 30 are alternately performed, a large amount of suspended matter accumulates on the suspended matter discharge port 14 side. Thus, by controlling the float discharge control valve 16 to properly open the float discharge port 14, the accumulated float is discharged to the float concentration tank 70.

In addition, if the state inside the filtration chamber 11 is filled with air, the efficiency of filtration or floating matter desorption is lowered. Therefore, the air discharge control valve 18 is opened to discharge the air in the filtration chamber 11 to the outside.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims are intended to cover such modifications or changes as fall within the scope of the invention.

1 is a block diagram of a continuous inlet filtration device using a fiber yarn in an embodiment of the present invention.

FIG. 2 is an exploded view specifically showing the first and second filtration filters of FIG. 1. FIG.

3 and 4 is a diagram illustrating the operation of the continuous inlet filtration device using a fiber yarn according to an embodiment of the present invention.

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

10 filtration treatment tank 11 treatment chamber

12: 1st doorway 13: 2nd doorway

14 float floating outlet 15 scattering plate

16: float discharge control valve 17: air outlet

18: air discharge control valve 20: first filtration filter

21: first porous tube 22: fiber yarn bundle

23: fiber yarn bundle fixing means 30: second filtration filter

40: flow path switching means 41: the first flow pipe

42: first three-way valve 43: second flow pipe

44: second three-way valve

Claims (6)

A filtration treatment tank having a first entrance and a second entrance and a float discharge outlet formed at a lower end thereof; A first filtration filter having a first porous tube installed inside the filtration tank so as to communicate with the first entrance, and a fiber yarn bundle comprising a plurality of fiber yarns surrounding the outer wall surface of the first porous tube; A second filtration filter having a second porous tube installed inside the filtration tank so as to communicate with the second entrance, and a fiber yarn bundle comprising a plurality of fiber yarns surrounding the outer wall surface of the second porous tube; And Flow passage switching means installed at a front end of the first entrance and the second entrance to selectively switch the raw water inflow direction and the filtrate discharge direction such that raw water inflow and filtrate discharge of the first entrance and the second entrance are alternately formed; Continuous inlet filtration device using a fiber yarn comprising a. The method of claim 1, The flow path switching means; A first flow pipe formed with a raw water inlet and a filtered water outlet and connected to the first entrance; A first three-way valve controlling alternately the raw water inlet or the filtered water discharge to the first entrance between the raw water inlet and the filtered water outlet; A second flow path tube formed with a filtered water discharge part and connected to the second entrance; And And a second three-way valve controlling alternately the raw water inlet or the filtered water discharge to the second entrance between the raw water inlet and the filtered water outlet. The method of claim 1, Removably fixed around one side of each of the first porous tube and the second porous tube, the fiber yarn bundle fixing means for fixing one end of the fiber yarn bundle around the one side of the first porous tube and the second porous tube Continuous inlet filtration device using a fiber yarn characterized in that it comprises a. The method of claim 1, The fiber yarn bundle is a continuous inlet filtration device using a fiber yarn, characterized in that the first porous tube and the second porous tube is assembled in a multi-stage structure. The method of claim 1, Continuous inlet filtration device using a fiber yarn, characterized in that the scattering prevention plate is installed in the center of the upper end of the float discharge port to prevent the scattering of suspended matter. delete

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