KR101236963B1 - Water filtering apparatus having advanced filtering function - Google Patents

Abstract

The present invention relates to a water filtration device with improved filtration function, the water filtration device according to the present invention can completely filter the finer contaminants through the sponge, squeezing the contaminants filtered by the sponge in the backwashing process to remove There is a number.

Description

Water filtering apparatus having advanced filtering function

The present invention relates to a water filtration device, and more particularly to a water filtration device with an improved filtration function that can completely filter out even fine contaminants.

A water filter, generally called a strainer, is a device for filtering organic suspended matter, which is introduced and generated in various equipment systems, using a mesh, and is widely used for purifying agricultural and industrial water. In addition, water filters are installed in factories to filter contaminated cooling water, and a large amount of contaminated water is filtered. The filtered water is used to cool steel and other products.

Most water filters use crevices to screen contaminants. However, since the process of forming the screen gap is very difficult, the screen itself is expensive, and furthermore, there is a limit to making the gap formed on the screen small, so that it is not possible to filter out fine contaminants of particle size. .

The present invention has been made to solve the problems of the prior art as described above, by further filtering the contaminants using a sponge (sponge-type filter), the filtration function that can completely filter out the fine contaminants of the particle size The purpose is to provide this improved water filtration device.

In addition, by placing a sponge between the screen and the perforated plate, by placing an expandable tube by air between the outside of the sponge, that is, between the sponge and the perforated plate to compress the sponge by the expansion of the tube, contaminated by the sponge during backwashing Another object is to provide a water filtration device with improved filtration to allow material to escape.

Water filtering device with improved filtration function according to the present invention for achieving the above object, the inflow path is supplied contaminated water; Filtering means for filtering contaminants contained in the contaminated water introduced into the inflow path; A discharge path for discharging filtered water filtered out of contaminants from the filtering means; A drain path for discharging backwash water including contaminants filtered by the filtration means; And backwashing means for directing backwashing water including contaminants filtered by the filtering means toward the drain path side, wherein the filtering means comprises a fixed filter that primarily filters contaminants from the contaminated water introduced from the inside. ; And a sponge-type filter wrapped around the fixed filter and filtering the contaminants secondary from the contaminated water passing through the fixed filter.

Here, the filtering means is wrapped around the sponge-type filter, the tube is expandable by the air supplied from the outside; And a perforated plate installed to surround the fixed filter, the sponge-type filter, and the tube, the perforated plate having a plurality of perforations formed therein for passing the filtered water filtered by the contaminant in the fixed filter and the sponge-type filter. Air supply means for supplying air to the tube of the filtering means to expand the tube when the backwash water is discharged into the fixed filter by the; The contaminants filtered by the sponge-type filter may be deflated to escape.

In addition, the filtration means is composed of two or more, the backwashing means further comprises a switch for inducing the two or more filtration means to discharge the backwash water sequentially, the position of the backwashing means; The means may supply air to the tube of the filtering means corresponding to the position of the backwashing means as sensed by the switch.

The present invention has the following effects.

First, relatively large contaminants are primarily filtered out through fixed filters such as screens and perforated plates, and fine contaminants at the particle level can be completely filtered out through sponges (sponge type filters).

Second, when contaminants accumulate on the fixed filter and sponge, air is filled in the tube surrounding the sponge to expand and exert the effect of squeezing the sponge, thereby removing foreign substances from the sponge in the backwashing process. Therefore, even if the filtration process is repeated for a long time, it is possible to prevent deterioration of the filtration efficiency by leaving the foreign matter filtered from the sponge.

1 is a schematic side cross-sectional view for explaining a water filtration device with improved filtration according to an embodiment of the present invention.
Figure 2 is a view for explaining the filtering means and the packing means in the water filtration device shown in FIG.
Figure 3 is a plan sectional view for explaining the configuration of the filtration means in the water filtration device shown in FIG.
4 is a plan view for explaining the air supply means in the water filtration device shown in FIG.
Figure 5 is a view for explaining the expansion of the tube (membrane type tube) of the filtration means in the water filtration device shown in FIG.
FIG. 6A is a view for explaining the application of another type of tube (hose tube) in the water filtration device shown in FIG. 1; FIG.
Fig. 6B is a view for explaining how the tube (hose type tube) of another form of Fig. 6A is inflated.
Figure 7 is a schematic cross-sectional view for explaining the water filtering device with improved filtration function according to another embodiment of the present invention.
8 is a plan view for explaining the air supply means in the water filtration device shown in FIG.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described. However, some components irrelevant to the gist of the present invention will be omitted or compressed, but the omitted elements are not necessarily required in the present invention, and may be combined and used by those skilled in the art. Can be.

Figure 1 is a schematic side cross-sectional view for explaining the water filtration device 1 (hereinafter referred to as 'water filtration device 1') with improved filtration according to an embodiment of the present invention, Figure 2 is shown in FIG. Figure for explaining the filtration means 20 and the packing means 30 in the water filtration device (1). 1 and 2, the water filtration device 1 according to the embodiment of the present invention is the main body 10, the filtration means 20, the packing means 30, the air supply means 40 and backwash Means 50.

The main body 10 includes an inflow path I through which contaminated water supplied by a pump (not shown) flows in, and contaminants contained in the contaminated water introduced through the inflow path I are filtered by the filtration means 20. And a discharge path O for discharging the filtered water contaminated with contaminants, and a drain path R for discharging the backwash water including a part of the contaminant and the contaminated water filtered by the filtering means 20.

Referring to FIG. 1, the inside of the main body 10 is divided into upper and lower portions by the partition wall 14. The partition 14 has a contaminated water through hole penetrating the upper and lower portions of the main body 10 corresponding to the number of the filter means 20, and the filter means 20 is installed on the contaminated water through hole. Therefore, when the contaminated water flows through the inflow path I on the left side of the drawing, the contaminated water flows into the filtration means 20 through the contaminated water passage through the lower portion of the partition 14. Therefore, the polluted water is filtered through the filtering means 20, and the filtered water filtered by the pollutant is discharged through the discharge path O connected to the upper portion of the main body 10.

A plurality of filtering means 20 is installed on the partition 14 of the main body 10. Referring to FIG. 4 for a while, eight filtration means 20 are installed along an approximately central circumference of the main body 10, and packing means 30 is installed at an upper portion of each filtration means 20 so that the main body 10 is inside the main body 10. Of contaminated water out of the body 10 is prevented.

2 and 3, the filtration means 20 includes a stationary filter 21, a perforated plate 22, a sponge 23 (sponge type filter) and a tube 24. As shown in FIG.

The substantially cylindrical fixed filter 21 is for filtering relatively large contaminants, and FIG. 2 illustrates a screen 21 having a minute gap (gap) through which contaminated water can pass. Of course, since a relatively large contaminant may be filtered in the sponge 23 which is a sponge-type filter, a perforated plate having a large perforated hole may be used as the fixed filter 21 instead of the screen 21. That is, what is necessary is just a structure which can support both sides of the sponge 23.

The perforated plate 22 is installed outside the screen 21 in a cylindrical shape having a larger inner diameter than the screen 21. In the space between the screen 21 and the perforated plate 22, a sponge 23 is installed to surround the screen 21, and a tube 24 is installed along the outer circumference of the sponge 23.

Therefore, the contaminated water introduced into the screen 21 passes through the screen 21 and the sponge 23 sequentially, so that the large sized contaminant is filtered out of the screen 21, and the screen 21 is screened. The contaminated water passes through the sponge 23 and is completely filtered to fine contaminants of particle size.

The tube 24 wrapped around the sponge 23 is a membrane-shaped tube in which a plurality of filtered water passage holes are formed to allow the filtered water passing through the sponge 23 to pass therethrough, or a hose type spirally wrapped around the sponge 23. It may be a tube. 2, 3 and 5 of the tube 24 is a membrane-type tube, Figure 6a and 6b shows that the hose-type tube is applied. In addition, the tube 24 is provided in a state in which the filling space that can be filled with air as a whole. The function of the tube 24 will be described later.

The filtering means 20 is fixed and sealed by the packing means 30. That is, a lower end ring 37 is provided to support the lower portion of the screen 21 along the upper portion of the contaminated water passage formed in the partition 14, and the sponge 23 and the tube are formed along the circumference of the lower end ring 37. An end cap 38 on which the 24 and the perforated plate 22 are supported is provided.

In addition, the upper portion of the main body 10 is covered with an upper flange 15, the upper flange 15 is also formed with a filter means mounting hole for mounting the filter means 20. An upper end ring 36 on which the screen 21, the sponge 23, the tube 24, and the perforated plate 22 are supported is installed along the inner side of the filtering means mounting hole of the upper flange 15, and the upper end ring 36 is provided. The packing plate 31 is positioned with the packing L 32L interposed therebetween. In addition, the packing plate 31 is pressed by the pusher 33 to which the bolt 34 is fastened, thereby increasing the packing efficiency of the upper part of the main body 10. This pusher 33 is prevented from being pushed up by being caught by the pusher support part 35 fixed to the upper flange 15. That is, when the packing plate 31 and the presser 33 are sequentially positioned on the packing L 32L, and the bolt 34 is tightened, the presser 33 is lifted up while being caught by the presser support part 35. This action, the packing plate 31 is a downward force is to act to increase the packing efficiency.

On the other hand, the tube 24 of the filtering means 20 is expandable by the air injected through the upper end ring 36 and the packing plate 31. That is, the air supply means 40 may be connected to the tube 24 via the upper end ring 36 and the packing plate 31 to supply air.

An air supply hole is formed at one point of the upper end ring 36 and the packing L 32L and the packing plate 31 corresponding thereto. As the air supply hole formed in the packing plate 31, an air supply nozzle 43 to which external air is supplied is connected, one end of the air supply nozzle 43 is connected to the coupler 44, and the other side of the coupler 44. By connecting with the air connecting portion 25 of the tube 24, the inner filling space of the tube 24 is connected to the external air supply means 40. At this time, the coupler 44 is seated between the packings 32s in the upper groove of the upper end ring 36.

In this embodiment, the tube 24 of the filtration means 20 receives air from the far side from the center of the main body 10. That is, referring to Figure 4, it can be seen that the air supply hole is formed from the packing plate (31a ~ 31h) to a point far from the center of the body 10 and the air supply nozzle 43 is connected. Therefore, in this case, the air supply line 41 is installed along the outer circumference of the packing plates 31a to 31h, and the three-way solenoid valve (at the point close to each packing plate 31a to 31h) in the air supply line 41. 42a to 42h are installed, and air can be supplied to the tubes 24 of the filtering means 20 by the control of the three-way solenoid valves 42a to 42h, respectively.

The operation of the air supply means 40 will be repeated after the description of the backwashing means 50.

Referring to FIG. 1, a shaft 51 that is rotated by a motor 61 is installed at the center of the main body 10, and a reverse path for backwash water discharged from the filtration means 20 is disposed at the lower portion of the shaft 51. A backstone 52 which leads to (R) is provided. Therefore, when the shaft 51 rotates, one end of the bitumen 52 faces the filtration means 20 while contacting the contaminated water passage at the bottom of the partition wall 14. A strong hydraulic pressure is applied to the inside of the main body 10, and the outside of the main body 10 connected by the drain path R is atmospheric pressure. Therefore, when the backwashed stone 52 is in contact with the lower part of the filtering means 20, the filtered water in the upper portion of the main body 10 passes through the perforated plate 22, tube 24, sponge 23 and the screen 21 in sequence At the same time, the contaminants trapped on the sponge 23 and the screen 21 are separated to be discharged to the drain path R through the backwash rock 52.

Thus, the process of discharging the backwash water facing one of the filtering means 20 may be referred to as 'backwashing process'. In the backwashing process, air is supplied to the tube 24 to expand and expand the sponge ( 23 may be shrunk so that foreign substances filtered from the sponge 23 are more effectively released. At this time, when the air is supplied to the tube 24 by recognizing the backwashing process, the backwashing position display unit 53 provided on the shaft 51, the switch 62, and the three-way solenoid valve 42 are formed.

Referring to Fig. 4, the upper portion of the shaft 51 is provided with a blade-shaped backstone position display portion 53a to 53h corresponding to the number of filtration means 20, and close to the backstone position display portion 53. 62 is provided. Therefore, when the shaft 51 rotates, the counterclockwise position display parts 53a to 53h also rotate together, and each vane sequentially approaches the switch 62. Accordingly, by recognizing that the wings of the backstone position display unit 53a to 53h are approaching through the switch 62, the controller (not shown) can determine which filtering means 20 is currently located in the backstone rock 52. do.

That is, if the backstone 52 is located in the filtering means 20 corresponding to the packing plate 31b in the 9 o'clock direction as shown in FIG. 4, the corresponding backstone position display part 53b is close to the switch 62. . Therefore, the controller (not shown) operates the three-way solenoid valve 42b in the 9 o'clock direction to supply air to the tube 24 of the filtering means 20 corresponding to the packing plate 31b in the 9 o'clock direction. Therefore, the air injected along the air supply line 41 is supplied to the tube 24 of the filtering means 20 in the 9 o'clock direction by the operation of the three-way solenoid valve 42b in the 9 o'clock direction. Thus, as shown in FIG. 5, the tube 24 expands to deflate the sponge 23. As the sponge 23 shrinks, the fine foreign matter buried in the sponge 23 is easily detached, and the foreign matter penetrates the screen 21 and passes through the screen 21 and the backwashed stone 52 through the drain path ( Exit to R).

Of course, if the backstone 52 continues to rotate and the backstone position display portion 53b rotates, the three-way solenoid valve 42b at the 9 o'clock position deflates the sponge 23 by bleeding the air from the tube 24 again. Loosen This expansion and contraction of the tube 24 may be repeated several times during the backwashing process.

Fig. 6a shows that another type of filtering means 20 'is mounted in the water filtration apparatus. That is, as shown in Fig. 6A, a hose-type tube 24 'spirally wrapped along the circumference of the sponge 23 is provided, and at one end of the hose-type tube 24', the air connection 25 ' The connection with the coupler 44 of the air supply means 40 is shown. When air is supplied to the hose-like tube 24 ', the sponge 23 is contracted by the expansion of the tube 24' as shown in FIG. 6B. In other words, the snake is a form that can press the sponge 23 in the form of grabbing the prey.

7 and 8 are views for explaining the water filtration device according to another embodiment of the present invention. 7 and 8 show that the point where the air supply means 40 '' is connected at the filtering means 20 '' and the packing means 30 '' is close to the center of the main body. It is. In this case, therefore, an air supply line 41 '' and a three-way solenoid valve 42 '' are installed inside the filtering means 20 '' to supply air to the tube 24 of the filtering means 20 ''. I can supply it.

On the other hand, the sponge-type filter applied to the filtering means in the embodiment of the present invention means that it is possible to filter through the pores or gaps, such as sponge, and at the same time recoverable. That is, when an external force is applied, a shrinkable material that can be returned to its original size when the external force is contracted is removed. In general, a foamable synthetic resin material may be used. That is, the size of the fine pores of the sponge determines the filtration level, it can be selected from among a variety of sponges having a variety of pore sizes depending on the intended use.

As described in detail above, according to the water filtration device with improved filtration function according to an embodiment of the present invention, by filtering a relatively large contaminant through a fixed filter, such as the screen 21, a perforated plate, Particle level fine contaminants can be completely filtered through the sponge 23 (sponge type filter).

In addition, when contaminants accumulate on the fixed filter 21 and the sponge 23, the air is filled in the tube 24 surrounding the sponge 23 and expands to exert an effect of squeezing the sponge 23 while expanding the sponge 23. Foreign matter on the can be removed during backwashing. Therefore, even if the filtration process is repeated for a long time, it is possible to prevent deterioration of the filtration efficiency by leaving the foreign matter filtered from the sponge (23).

Preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art will be able to make various modifications, changes and additions within the spirit and scope of the present invention. And additions should be considered to be within the scope of the claims of the present invention.

1: Water filtration device
10: Body
I: funnel
O: discharge path
R: drain path
14: bulkhead
15: upper flange
20,20 ', 20'': Filtration means
21: Screen
22: punched plate
23: sponge
24,24 ': Tube
25,25 ': Air connection
30,30 '': Packing means
31,31a ~ 31h, 31 '': Packing plate
32L: Packing L
32s: Packings
33: push button
34 bolt
35: pressing support
36: upper end ring
37: lower end ring
38: end cap
40,40 '': Air supply means
41,41 '': Air Supply Line
42,42a ~ 42h, 42 '': 3-way solenoid valve
43: air supply nozzle
44: coupler
50: backwashing means
51: shaft
52: backwash
53, 53a ~ 53h: backstone position display
61: motor
62: switch

Claims (3)

An inflow path through which contaminated water is supplied;
Filtering means for filtering contaminants contained in the contaminated water introduced into the inflow path;
A discharge path for discharging filtered water filtered out of contaminants from the filtering means;
A drain path for discharging backwash water including contaminants filtered by the filtration means; And
A backwashing means for directing backwashing water containing contaminants filtered by the filtering means toward the drain path,
The filtration means,
A stationary filter primarily filtering contaminants from the contaminated water introduced from the inside;
A sponge-type filter wrapped around the fixed filter and configured to secondarily filter contaminants from the contaminated water passing through the fixed filter;
A tube wrapped around the sponge-type filter and expandable by air supplied from the outside; And
Installed to surround the stationary filter, sponge-type filter and tube, and comprises a perforated plate formed with a plurality of perforations through which filtered water filtered contaminants in the fixed filter and sponge-type filter,
When the backwash water is discharged to the inside of the fixed filter by the backwashing means, by supplying air to the tube of the filtration means further comprises an air supply means for expanding the tube,
The sponge filter is contracted by the expansion of the tube of the filter means water filtering device characterized in that the filtration function, characterized in that the contaminants filtered by the sponge filter is released.

delete The method of claim 1,
The filtration means is composed of two or more,
The backwashing means induces the two or more filtering means to sequentially discharge the backwashing water,
Further comprising: a switch for sensing the position of the backwashing means,
And the air supply means supplies air to the tube of the filtering means corresponding to the position of the backwashing means as detected by the switch.

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