KR101271089B1 - Automatic backwash filter - Google Patents

Abstract

PURPOSE: A porous plating apparatus of an automatic backwashing filter is provided to uniformly implement a backwashing operation without leaking filtering media to the outside. CONSTITUTION: A porous plating apparatus of an automatic backwashing filter includes regularly arranged filtering basins. A treating water inflow path and a filtered water discharging path are arranged at one side and another side of the apparatus, respectively. Treating water introducing holes and backwashing water introducing and treated water discharging holes are formed among the inflow path, the discharging path, and the filtering basins. Filtering layers filled with filtering media, porous plates(19), and filtering baths are arranged on the bottom of the filtering basins. A porous plate includes a frame(31), a coarse net(33), and a fine net(35). A through-hole(32) is arranged in the front side of the coarse net. The fine net forms a hexagonal frame on the external side of the frame and the coarse net.

Description

Porous plate device of automatic backwash filter {AUTOMATIC BACKWASH FILTER}

The present invention relates to a porous plate device of an automatic backwash filter,

It is mounted on the filter paper of automatic backwash filter for filtering and separating various organic and inorganic contaminants contained in various sewage, sewage, wastewater and mine wastewater, and stably supports the filter layer containing the filter material and attaches it inside. The present invention relates to a porous plate apparatus of an automatic backwash filter for easily washing and removing inorganic materials and maintaining a uniform porosity to enable uniform backwashing during backwashing.

In general, since various sewage, wastewater, and mine wastewater contain a large amount of minerals with various pollutants, the wastewater is usually filtered through an automatic backwash filter before being discharged. have.

This automatic backwash filter registered by the Applicant of the Patent No. 689855, as shown in Figure 1,

Each filter paper 1 is partitioned at regular intervals in the longitudinal direction of the longitudinal filter paper, and at the same time performing a filtration process in the filter layer 3 formed inside the filter paper 1,

Backwash water was sequentially flowed up to each filter paper 1 with a backwash pump 4 to separate and fluidize the contaminants blocked by the filter medium 5,

The moving bridge 6 moves on the rail 7 on the top of the filter paper 1, and the floating contaminants mixed with the backwash water are collected by the backwash pump 8 to be separated and discharged.

The contaminant-free filter medium 5 is again submerged in the filtration layer 3 so that it can be used repeatedly as the filter medium 5,

In addition to the filtration process, the cleaning process of the filter medium (5) can be performed simultaneously in parallel to maximize the water treatment efficiency, and to reduce the installation area, cost and operating cost of the water treatment equipment.

And at the bottom of each filter paper 1 of the automatic backwash filter, a porous plate 9 is installed to prevent the filter medium 5 from being lost, and the filter medium 5 is filled thereon.

The porous plate 9 is prepared by compression molding a non-metallic plastic fillet and aluminum oxide of PE or ABS material to a predetermined thickness or more, as shown in FIG. 5, in order to smooth the flow of backwashing water during backwashing. It is becoming.

However, since the porous plate 9 is made of a plastic molding by compression molding, it is difficult to maintain uniform porosity,

The strength is relatively weak, so it is easily broken by the impact, the filter medium 5 is not only a disadvantage that outflow,

As the raw water is filtered, the inorganic material that has passed through the filtration layer 3 among the inorganic materials contained in the raw water is stuck to the inside of the porous plate 9 so that the pores of the porous plate 9 become clogged and blockage. Results in deterioration,

In order to remove contaminants such as inorganic substances attached to the pores, high pressure washing is mainly performed.

Only the surface of the porous plate 9 is only partially washed, and the inside of the porous plate 9 having a predetermined thickness is hardly washed, and thus, the porous plate 9 is frequently replaced and installed, and the automatic backwash filter There was a problem that the maintenance cost of the house significantly increased.

The present invention has been studied in view of the problems of the porous plate of the conventional automatic backwash filter,

It is an object of the present invention to efficiently improve the structure of a porous plate, to provide a porous plate device of an automatic backwash filter which maintains better strength and is easier to clean.

Another object of the present invention is to provide a porous plate apparatus of an automatic backwash filter, which maintains the porosity of the porous plate more uniformly, so that the filter medium is not easily lost and can be used for a longer period of time.

To this end,

Automatic backwash filter porous plate device,

A frame in which the metal supports are divided into grids,

A through hole is provided in the front and the barbed net installed in the upper end of the frame,

A fine mesh net formed of a mesh net and forming a hexahedron frame on the outside of the frame and the barbed net,

By configuring

The plate filled with the filter material at the top can be maintained in sufficient strength by a frame composed of a grid of metal supports,

The wooden net installed between the frame and the wooden net prevents the weak net from being damaged by friction with the frame and receives an equal load, as the net is made of a mesh net that is relatively weaker than the frame.

The net mesh has a uniform porosity due to the uniformly formed mesh net, so that the backwash can be uniformly backwashed without flowing out of the filter material, and the inorganic matter attached to the inside of the plate can be more easily washed. By making it possible to prevent the pores of the plate from being blocked,

When the automatic backwash filter is operated, it is characterized in that the maintenance by the plate is facilitated and the operation cost can be greatly reduced accordingly.

Porous plate device of the automatic backwash filter of the present invention,

Can maintain sufficient strength,

To prevent the mesh net from breaking and to receive an equal load,

During backwashing, the filter medium does not spill out and the backwashing is uniform.

By making it easier to clean the inorganic material attached to the inside of the porous plate, it is possible to prevent the pores of the plate to blockage,

When the automatic backwash filter is operated, there is an effect of facilitating the maintenance by the porous plate, thereby significantly reducing the operating cost.

1 is a partially cutaway perspective view of an automatic backwash filter paper to which the present invention is applied;
Fig. 2 is a vertical cross-
Figure 3 is a partial excerpt perspective view showing the configuration of one embodiment of the porous plate of the present invention,
4 is a copper exploded perspective view,
5 is a partial excerpt perspective view of a conventional porous plate.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a partially cutaway perspective view of an automatic backwash filter paper to which the present invention is applied;

2 is a longitudinal cross-sectional view,

The automatic backwash filtration device in which the present invention is installed is continuously disposed by separating the filter paper 1 into the cell sheets 2 at regular intervals, and the treated water inflow passage 12 on one side thereof and the filtered water on the other side of the opposite side. Each of the discharge channels 13 is formed.

Further, a treated water inlet 14 and a backwash water inlet and a filtered water outlet 15 are formed between the treated water inlet 12 and the filtered water outlet 13 and the filter paper 1.

The bottom of each filter paper 1 is provided with a filtration layer 3 containing a filter medium 5, a porous plate 9, and a filtration tank 10.

And a rail (7) (7 ') is provided on the upper portion of the filter paper (1), a moving bridge (6) connected to the drive motor is mounted on the upper portion, and a hood having a backwash water collecting pipe attached to the lower end thereof. (16) and a backwash pump (8) are mounted, and a backwash water discharge pipe is connected to the backwash pump (8) and connected to the trough (20) and the pollutant discharge pipe, respectively.

In addition, a backwash valve and a chamber 21 are mounted at the end of the filtrate discharge channel 13 so that a backwash pipe 22 communicating with the backwash water inlet and the filtrate outlet 15 is connected to a backwash pump 4 so that It is attached to the bottom face of the movable bridge 6.

On the other hand, the filter layer (3) is composed of one U-shaped compartment for each of the backwash water inlet and the filtered water outlet (15), and the filter medium (5) is composed of a combination of sand and anthracite, and granular activated carbon In addition, the efficiency can be improved.

Figure 3 is a partial excerpt perspective view showing the configuration of one embodiment of the porous plate of the present invention,

4 is an exploded perspective view of the

Porous plate 19 of the present invention is a frame 31, the metal support 30 is partitioned in a grid, and

A through hole 32 is provided in the front and the barbed wire 33 is installed on the upper end of the frame 31,

It is formed of a mesh net 34 is composed of a fine mesh 35 to form a hexahedral frame on the outside of the frame 31 and the rough wood 33.

The porous plate device of the automatic backwash filter of the present invention configured as described above,

When the treated water containing contaminants enters the filter paper 1 through the treated water inlet 12 and the treated water inlet 14, the contaminants contained in the treated water are filtered through the filter media 5 in the filter bed 3. After filtration process,

The filtered water from which the contaminants have been removed is discharged to the filtered water discharge path 13 through the porous plate 19, the filter tank 10, and the backwash water inlet and the filtered water outlet 15, and then sent to the treatment apparatus of the next stage.

At this time, a part of the filtrate discharged into the filtrate discharge channel 13 remains as backwash water in the filtrate discharge channel 13 to maintain a constant level, and when the cleaning cycle of the filter layer 3 arrives,

The backwash pump (4) is operated and the backwash water flows through the backwash water inlet and the filtered water outlet (15), and the backwashing process proceeds, and the surrounding two backwash water inlet and the filtered water outlet (15) are stopped, and all other stations The washing water inlet and the filtrate outlet 15 are filtered.

In this order, the backwash pump 4 operates so that the backwash water flows back through the backwash pipe 22 and the backwash valve and the chamber 21 into the filtration tank 10 through the backwash water inlet and the filtered water outlet 15. This causes the filter medium 5 on the upper portion of the porous plate 19 to rise while being upflowed again to separate the contaminants blocked by the filter medium 5 with washing.

At this time, the porous plate 19 filled with the filter medium 5 on the upper side is maintained in sufficient strength by the frame 31 composed of a grid-shaped metal support 30,

The mesh net 35 made of a mesh net 34 having a relatively weak strength compared to the frame 31 by the crude mesh 33 installed between the frame 31 and the fine mesh 35 is friction with the frame 31. While the weak strength of the fine mesh 35 is prevented from being damaged and can receive an even load,

The net mesh 35 is maintained with a uniform porosity by the mesh net 34 formed uniformly, and at the time of backwashing, the filter medium 5 is uniformly backwashed without flowing out to the outside, and the porous plate 19 It is possible to more easily wash the inorganic matter attached to the inside, it is possible to prevent the pores of the porous plate 19 is blocked,

When operating the automatic backwash filter, it is possible to facilitate the maintenance by the porous plate 19, thereby significantly reducing the operating cost.

On the other hand, the contaminant separated from the filter medium (5) is caused by the expansion of the volume of the backwash water caused by the pressure and flow rate of the backwash water in which the filter medium (5) above the filter layer (3) in the fluidized state mixed with the backwash water, Sand is distributed at the center and separated contaminants are distributed at the outside, and the separated contaminants are in a state of being prevented from being diffused around by the hood 16. At this time, the backwash pump 8 operates to suck back pollutants together with the pollutants through the backwash water collecting nozzle mounted on the hood 16, and the pollutants are discharged and collected by the pollutant discharge pipe, and the pollutants are separated. The treated water rises upward and is discharged to the outside through the trough 20.

In this process, the process of filtration of the treated water in each filter paper 1 and the washing process of the filter medium 5 by the backwashing water are carried out continuously, so that the treated water is continuously filtered by the clean filter medium 5 at all times. It can be processed.

Therefore, according to such a porous plate apparatus of the automatic backwash filter of the present invention,

Backwash water was sequentially flowed up to each unit filter paper 1 by the backwash pump 4 to separate and fluidize the contaminants blocked by the filter medium 5,

The moving bridge 6 moves on the rails 7 and 7 'on the top of the filter paper 1, and the floating contaminants mixed with the backwash water are collected by the backwash pump 8 to be separated and discharged.

The contaminant-free filter medium 5 is again submerged in the filtration layer 3 so that it can be used repeatedly as the filter medium 5,

In addition to the filtration process, not only can the cleaning process of the filter medium 5 be performed in parallel and simultaneously,

The strength of the porous plate 19 can be sufficiently maintained,

To prevent the fine mesh 35 of the porous plate 19 from being damaged and to receive an even load,

When backwashing, the filter medium (5) does not spill to the outside is uniform backwashing,

By making it easier to wash the inorganic material attached to the inside of the porous plate 19, it is possible to prevent the pores of the porous plate 19 is blocked,

When operating the automatic backwash filter, there is an advantage that can be more easily maintained by the porous plate 19, thereby significantly reducing the operating cost.

In the above, the present invention has been described based on specific embodiments. However, the present invention may be modified in various ways within the technical idea of the present invention, and the technical scope of the present invention is not limited to the above embodiments.

1: filter paper
2: Cell Sheet
3: filtration layer
4: backwash pump
5: filter medium
6: moving bridge
7, 7 ': rail
8: backwash pump
9, 19: porous plate
10: filtration tank
12: treated water inflow channel
13: filtered water discharge
14: treated water inlet
15: backwash water inlet and filtered water outlet
16: hood
17: pollutant discharge pipe
20: Trough
21: chamber
22: backwash pipe
30: metal support
31: frame
32: through-hole
33: barbed wire
34: mesh network
35: network

Claims (1)

Filter paper is continuously installed at a predetermined interval, and the treated water inflow channel is formed at one side thereof, and the filtered water discharge channel is formed at the other side of the opposite side,
A treatment water inlet and a backwash water inlet and a filter water outlet are formed between the treated water inlet and the filtered water outlet and the filter paper, and a filter layer, a porous plate, and a filter tank containing the filter material are provided at the bottom of the filter paper.
The upper part of the filter paper is equipped with a moving bridge connected to the drive motor, the lower end is equipped with a hood and a washing pump is attached to the backwash water collection pipe, the backwash water discharge pipe is connected to the cleaning pump and the trough and pollutant discharge pipe Connected to the
In the backwash valve and the chamber is mounted at the end of the filtered water discharge channel, a backwash pipe communicating with the filtered water outlet is connected to a backwash pump and mounted on the bottom of the moving bridge, the porous plate apparatus of the automatic backwash filter,
The porous plate is a frame in which the metal support is partitioned in a grid,
A through hole is provided in the front and the barbed net installed in the upper end of the frame,
Porous plate apparatus of the automatic backwash filter, characterized in that made of a mesh net formed of a fine mesh to form a hexahedral frame on the outside of the frame and wood.

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