KR100585490B1 - Apparatus of filtering and backward washing with electromagnetic power - Google Patents

Abstract

The present invention is capable of filtering suspended solids contained in a fluid with a high degree of precision, and having an electromagnet and a permanent magnet installed at a specific part of a cylindrical body of a filtration device having a variable filter layer during backwashing using air pressure and fresh water, thereby providing uniform uniformity under constant conditions. The present invention relates to a filtration and a backwashable precision filtration device for obtaining a treated water. The filtration is performed by compressing the variable filter layer by the water pressure of the inflowing raw water. The filter position is fixed. It is formed and is not affected by other conditions such as water pressure and always forms a constant compressed layer to provide uniform water quality filtered water.In case of backwashing, when the backwash water is injected through the filtered water outlet, the compressed filter layer rises upwards in the cylindrical body. At this time, the air is injected to form turbulence by the air bubble, and the magnetic force of the electromagnet attached to the upper part is used. The electromagnet which discharges the pollutants caught between the filters by repeating the back and forth process is completely discharged. To provide a filtration and backwashable precision filtration using.

Filtration

Description

Filtration and backwashing method using an electromagnet and its apparatus {Apparatus of filtering and backward washing with electromagnetic power}

1 is a perspective view of a filtration and backwashing device using the electromagnet of the present invention.

2 is a cross-sectional view of FIG.

Figure 3 is an operating state showing the filtration operation of the filtration device.

Figure 4 is an operating state showing the backwash operation of the backwashing device.

5 is a use of the present invention applied to a general water purifier.

6 is a schematic cross-sectional view showing a conventional filtration device.

※ Explanation of code for main part of drawing

10: filter device having a variable filter layer

11: electromagnet A 12: electromagnet B

13: electromagnet C 21: raw water and concentrated water piping

22: upper holder portion 23: band portion A

24 filter layer 25 flow path forming plate

26: band portion B 27: lower holder portion

28: lower hole support portion 29: discharge hole

30: treated water and backwash water piping

The present invention is capable of filtering suspended solids contained in a fluid to a high degree and providing an electromagnet at a specific part of a cylindrical body of a filtration device having a variable filter layer during backwashing using air pressure and fresh water, so that the treated water is uniformly maintained under constant conditions. The present invention relates to a precision filtration device capable of providing filtration and backwashing, wherein filtration is performed by pressurized water of raw water inlet water, and the filter position is fixed by magnetic force when it reaches a specific part of the lower part. It is formed to be able to provide uniform water quality by always forming a constant pressing layer without being influenced by other conditions such as water pressure, and when backwashing water is injected through the filtered water outlet during backwashing, the compressed filter layer is directed upward. In this case, air is injected to form turbulence by air bubbles, and up and down vibrations are generated by the magnetic force of the electromagnet attached to the upper part, thereby filtration and backwashing using an electromagnet to completely discharge the pollutants caught between the filters. The aim is to provide a precision filtration device.

Filtration of suspended solids in the water treatment process of water treatment plant, pretreatment before advanced treatment of various wastewaters (ie activated carbon, ozone, photocatalyst, membrane separation treatment) or flotation contained in fluid (especially water) for water treatment for recycling purposes. Micro filters are used to filter solids.

In addition, various filtration devices are used in general household water purifiers.

The precision filtration device used for this purpose is manufactured to a certain size of the pore structure of the filter to perform the filtration, after a certain period of time, if the pores are blocked by the filtered contaminants, backwashing is impossible or the rate of backwash recovery is extremely low. Therefore, most microfiltration devices have to replace the filter at regular intervals.

In addition, in the past, there have been attempts to develop a method and a filtration apparatus which are intended to be performed in a reaction tank that has been partially filtered and backwashed, but as shown in the diagram of FIG. In the initial inflow, the suspended solids may flow out unfiltered to the outlet 4 before the filter layer made of fibers or wefts is sufficiently compressed. a) When the supply stops while maintaining the state, the filter layer is injured again with elasticity and buoyancy. If the use is stopped for a long time in the state of FIG. 5 (b), the filter layer is injured to the state of FIG. If the discharge environment changes from time to time depending on the surrounding conditions in the state (b) of FIG. 5 or (a) depending on the water pressure, the initial and intermediate water quality Is discharged properly has resulted in failing to homogenize and stabilize the water quality.

In addition, if you want to backwash, because the pores of the filter layer only changes by aerodynamics, there is no effect of vibration, etc., the efficiency of removing foreign matters is lowered, resulting in a faster backwashing cycle, resulting in a higher consumption of fresh water. Applicants have made various devices and tried various methods to solve this problem. Among them, the result of the test using electromagnets or permanent magnets was obtained to obtain the best results and completed the present invention.

Accordingly, the present invention has been made in view of the problems of the prior art, and its object is to provide an electromagnet and a permanent magnet in a filtration device at the time of filtration or backwashing of a fluid to provide a constant treated water at all times, and during filtration Compression is performed by inflow water pressure in the inlet direction. When arriving at the lower part, the position of the filter layer is fixed by the magnetic force of the 13th position of the electromagnet. It is formed to form a certain compressed layer without being affected by the water pressure to always obtain a certain quality of the filtered water under the same conditions, and when backwashing water is injected through the filtered water outlet during backwashing, the compressed filter is raised upward At this time, the air is injected to form turbulence by air bubbles, and up and down vibrations are formed between the electromagnet 11 and the electromagnet 12 by the magnetic force attached to the upper end, so as to completely discharge the contaminants caught between the filters. The present invention provides a filtration and backwashable precision filtration device.

In addition, since the filtration device of the present application uses an electromagnet to be applied as a pretreatment device to a household water purifier, it is intended to provide a filtration device that always provides uniformly stable water purification.

In order to achieve the above object, the present invention forms a tubular shape and the raw water inlet pipe is connected to the upper side and the treated water discharge pipe is connected to discharge the filtered raw water on the lower side to quickly and cleanly filter the suspended solids contained in the fluid with high accuracy. In case of backwashing with air pressure and fresh water, a variable filter layer can be applied to specific areas for good backwashing. It is characterized in that the electromagnet is installed to the outside of the filter device container so as to be applied, and the upper roller part for guiding the variable filter layer inside the container has a corresponding magnetic force to achieve the object of the present application.

Detailed description by the drawings presented in order to describe the invention in the raw water and the backwash water is discharged through the raw water and the concentrated water pipe 21 to the filtration device 10 having a variable filter layer shown in FIG. And an upper holder portion 22 which leads the variable filtering portion 24. The upper holder portion has a function of stabilizing the flow of water by uniformly dispersing the flow of inflowing raw water and corresponding to an electromagnet installed outside the filtering device. Permanent magnet is installed on the outer periphery of the upper holder portion and installed to correspond to the external electromagnet.

Between the upper holder portion 22 and the lower holder portion 27 is connected to the variable filtering portion 24 made of fibers or weft yarns due to the band A (23), the band B (26), The flow path forming plate is installed to increase the diffusion efficiency of the air bubble. The flow path forming plate has a taper angle of 3 to 10 degrees to increase the diffusion force, and the discharge hole is installed to diffuse evenly in each direction to increase the diffusion force.

As described in the drawings and the detailed description of the present invention, when the raw water is filtered, raw water is introduced through the raw water inlet pipe 21 so as to be dispersed at a constant pressure through the upper holder portion 22 of the upper portion of the cylinder, thereby promoting water flow stabilization. Pressing is performed through the fiber or weft filter layer 24 by the water pressure of the inflow water, and when the upper holder portion reaches the lower end electromagnet 13, a position fixing is formed by the magnetic force response, thereby forming a constant pressing layer without being affected by the water pressure. When the backwash is applied through the filtrate outlet 30, the compressed filter layer is raised upward and the flow-forming plate 25 is about 3 to 10 degrees. The injection rate is increased by giving a taper angle, and air is injected to form turbulence by air bubbles, and the filter layer is raised to the upper part. Between the attached electromagnets 11 and 12, the backwash water flows in and out for a certain period of time and repeats the vibration up and down by magnetic force. It is the principle that backwashing is performed to form and discharge the pollutants stuck between the filters completely out.

Hereinafter, the present invention will be specifically described in various aspects.

5 is a cross-sectional view of an embodiment of the present invention using the filtration device as a pretreatment device for domestic or industrial water purifiers to pretreatment facilities such as UF (ultra filter), NF (nano filter), reverse osmosis (RO) filter, etc. It can be usefully used.

Hereinafter, preferred embodiments will be presented and the results thereof will be presented to further embody the spirit of the present invention.

Example 1

-Raw water quality conditions: A sample containing 100 ppp of kaolin was sampled and tested under the following conditions.

-Experimental condition:

 1. 6000 G electromagnets were mounted on the top and 4000 G electromagnets were mounted on the bottom to feed raw water to the module.

 2. Filtration was carried out to measure the water quality of the treated water by repeating the supply and interruption of raw water at intervals of 20 seconds with respect to the time of the third party product having a filtration and backwashing function without an electromagnet installation.

 3. In case of backwashing, 5 second stop after 10 second inflow and 5 second stop after 10 second inflow were repeated five times, followed by filtration again to compare the results.

(Experimental results by the method of 2: ppm in water quality).

Operating conditions                                                 division 1 minute after starting filtration 5 minutes after starting filtration 10 minutes after starting filtration Restart 20 seconds after shutdown Restart 1 minute after shutdown Comparative Example (Third Party Products) 5.4 3.2 3.0 3.5 3.8 Product 2.8 2.8 2.8 2.8 2.8

(Experimental results of the method of 3: ppm in water quality).

Condition                                              Water quality (ppm) 1 minute after starting filtration 5 minutes after starting filtration 10 minutes after starting filtration Restart 20 seconds after shutdown Restart 1 minute after shutdown Comparative Example (Third Party Products) 5.6 3.2 3.1 3.8 4.0 Product 2.9 2.8 2.8 2.8 2.8

As an effect of using the electromagnet filter of the present application, when the initial raw water filtration is desired, the raw water is introduced after the filter layer is formed at a compressed position (electromagnet 13) having sufficient conditions necessary for filtration using an electromagnet in advance. Can be effectively filtered and the electromagnet holds the filter so that the filtering cotton yarn or fiber filter layer does not rise even if the supply of raw water is stopped, so that the water quality can be stably obtained and the water purification effect is stable even when backwashing. Since the fiber or cotton yarn is held at the desired backwash position, the buoyancy of cotton yarn does not occur, and the backwash water flows in between the electromagnet 11 and the electromagnet 12 for a few seconds, stops for a few seconds, and forms a vertical vibration movement by the magnetic band to be sandwiched between the filters. To completely discharge any contaminants As you would expect a backwash effect, resulting in constant pressure by the enemy, without any change in the amount and quality of integers you will always want to help you reliably perform quality constant feature.

Claims (4)

In the filtration and backwashing method for filtering the suspended solids contained in the fluid, if necessary, the raw water inlet pipe is connected to the upper side and the treated water discharge pipe is connected to the lower side to form a cylindrical shape, Filtration and backwashing device An electromagnet is installed in a specific external part of the container, and a corresponding magnet is installed in the upper holder part connected to the filter layer inside the container. When performing filtration, the fiber filter layer is fixed to a desired position (electromagnet 13). It is always unaffected by the flow of the fluid to form a constant pressure layer to provide a certain quality of filtered water, if you want backwashing backwash water is injected through the filtrate outlet 30 and when the variable filter layer is raised to the top of the container Between the attached electromagnets 11 and 12, the backwash water is repeatedly introduced and stopped for a predetermined time, and the up and down vibrations are formed by magnetic force to completely discharge the pollutants caught between the filters. Filtration and Backwashing Methods. In the filtration method of forming a cylindrical shape, the raw water inlet pipe is connected to the upper side and the treated water discharge pipe is connected to the lower side to filter the suspended solids contained in the fluid, One electromagnet is arranged and installed in the middle and two upper and lower parts outside the container, and the corresponding magnet is installed in the upper holder part connected with the filter layer inside the container, so that weft or fiber filter layer is desired when performing filtration. Filtration method using an electromagnet, characterized in that to form a certain compressed layer at all times without being affected by the water pressure or the flow of the fluid fixed to a position to obtain a purified water of a certain quality. In the filtration and backwashing device for filtering the suspended solids contained in the fluid by the raw water inlet pipe is connected to the upper side and the treatment water discharge pipe is connected to the lower side in the shape of a cylinder, Electromagnets (11, 12, 13) are installed in the outer specific part of the container of the filtration device, and a permanent magnet is inserted in the upper holder part connected to the filter layer in the container, so that the filter layer is fixed to a desired position when performing filtration or backwashing. Filtration and backwashing apparatus using an electromagnet, characterized in that to form a constant compressed layer at all times without being affected by the flow of the fluid to obtain a certain quality of filtered water or backwashing The method of claim 3, wherein Filtration and backwashing device using an electromagnet, characterized in that to increase the diffusion speed of the fluid by giving a taper angle of 3 to 10 degrees to the bottom flow path forming plate of the filtration and backwashing device.

Images