KR101644519B1 - Apparatus for filtering water - Google Patents

Abstract

The present invention relates to a continuous filtration apparatus for filtering wastewater containing organic matter such as a farm site. A rotary drum having a filter net formed on its outer circumferential surface to filter a foreign matter, and a power unit for rotating the rotary drum, And an inlet port through which wastewater to be treated flows into the rotary drum is formed in the housing in contact with the tip of the rotary drum.

Description

[0001] Apparatus for filtering water [0002]

The present invention relates to a continuous filtration apparatus for filtering wastewater containing organic matter such as a farm site.

The continuous filtration device is a device for filtering wastewater containing organic matter by using a drum surrounded by a net. The performance of the filtering network is better as the mesh of the mesh becomes closer, but the mesh is easily clogged by the dirt. Therefore, there is a technique of mounting the net on the outer circumferential surface of the rotating drum so as to eliminate clogging of the mesh, and spraying high pressure water toward the mesh to eliminate clogging.

One of the typical prior arts is Korean Patent No. 10-1009439. A rotating drum having a mesh on its outer circumferential surface is rotated at a constant speed, and wastewater to be treated is introduced into the rotating drum. As it passes through the net of the rotating drum, the filtered water enters the simple water tank which surrounds the rotating drum, and the water in the simple water tank is sent to the intended place of use by using the fluid pump.

On the other hand, a water spray nozzle is installed on the upper part of the rotary drum to spray high-pressure water from the outside toward the net of the rotary drum, and the dirt falling from the net is collected through the water receiver installed in the rotary drum and finally sent to the waste treatment facility. Therefore, continuous sewage filtration is possible without clogging of mesh.

Such conventional techniques are used in facilities requiring a large-scale water purification capability such as a farm. Accordingly, the throughput per hour of the filtration apparatus is considerable, and the soundness of the mechanical element due to the flow of the treated water is a problem. Particularly, on the contact surface between the rotating drum and the simple water tank enclosing the rotating drum, the abrasion due to the friction proceeds according to the rotation of the rotating drum. There is a problem that the wastewater in the rotary drum flows out into the clearance of the contact surface rather than the net due to the pressure gradient between the inside and the outside of the rotary drum and the wear due to use and the unfiltered wastewater flows into the simple water tank.

In addition, the conventional technique forms the inlet of the wastewater to be treated at the end of the hollow rotary shaft of the rotary drum. Since the diameter of the rotating shaft can not be increased arbitrarily, there is a limit to the amount of water to be introduced at one time, and the contamination, clogging There is a problem of.

Korean Registered Patent No. 10-1009439 (Jan. 12, 2011)

SUMMARY OF THE INVENTION [0005] The present invention intends to solve the structural weakness of the conventional filtration apparatus so that continuous filtration can be smoothly performed.

Other objects and advantages of the present invention will become apparent to those skilled in the art from the following detailed description.

According to an embodiment of the present invention, there is provided a rotary drum having a housing having an inner space, a rotary drum having a filter net rotating while its open end contacts the inner wall of the housing, And an inlet for introducing wastewater to be processed into the rotary drum is formed in the housing where the front end of the rotary drum is in contact with the rotary drum.

In this case, a ring-shaped sliding block is provided to protrude from the distal end of the rotary drum, and an inner wall of the housing may be provided with a mounting portion which contacts the sliding block and supports the distal end of the rotary drum. And a supporting block provided in the receiving groove and in surface contact with the sliding block, and a supporting block provided in the receiving groove and in contact with the supporting block and the supporting block, wherein the supporting block is fixed to the inner wall of the housing at one end thereof, And an elastic member interposed between the support bracket and the support bracket and elastically pressing the support block toward the slide block.

According to another embodiment of the present invention, a ring-shaped sliding block protrudes from the tip of the rotary drum and includes a pressing portion for elastically pushing the tip of the rotary drum forward toward the wall surface of the housing, A mounting bracket for supporting a front end portion of the rotary drum in contact with the sliding block, the mounting portion being fixed to an inner wall of the housing at one end thereof and a receiving groove for receiving a part of the sliding block at the other end thereof; And a support block provided in the receiving groove and in surface contact with the sliding block.

Further, a sealing ring may be interposed between the support block and the wall surface of the receiving groove.

On the other hand, the mounting bracket may be a semicircle supporting the lower end of the rotary drum.

Further, the bottom of the inner space of the housing is semicircular corresponding to the shape of the rotary drum, and can communicate with the drain pipe at the bottom end of the inner space.

According to the embodiment of the present invention, the wastewater to be treated is immediately introduced into the rotary drum in the filtration apparatus, thereby avoiding the possibility of mixing with the filtration treated wastewater in the filtration apparatus, unlike the conventional technique.

The improved sealing structure between the rotating drum with the tip open and the inner surface of the housing ensures that no wastewater escapes between the tip of the rotary drum and the housing, rather than through the filter net, due to the operating load, . Accordingly, the sewage filtration performance can be prevented from deteriorating as the use period is increased, and the maintenance cycle can be increased.

The effects of the present invention will be clearly understood and understood by those skilled in the art, either through the specific details described below, or during the course of practicing the present invention.

1 is a schematic perspective view of a continuous filtration apparatus according to an embodiment of the present invention;
Figure 2 is a schematic side cross-sectional view of the embodiment shown in Figure 1;
3 is a schematic front cross-sectional view of the embodiment shown in Fig.
FIG. 4 is a perspective view showing a contact portion between the rotary drum and the housing of FIG. 1; FIG.
5 is an enlarged view of a portion A shown in Fig.
6 is a schematic side cross-sectional view of another embodiment of the present invention.
FIG. 7 is a perspective view showing the injection nozzle employed in the embodiment shown in FIG. 1; FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the configuration, function, and operation of a continuous filtration apparatus according to the present invention will be described with reference to the accompanying drawings. It should be noted, however, that the same reference numerals are used for the same or similar components throughout the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, therefore, are not to be construed as limiting the technical spirit of the invention. It is to be understood that the invention is not to be limited by any of the details of the description to those skilled in the art from the standpoint of a person skilled in the art that any or all of the drawings shown in the drawings are not necessarily the shape,

1 to 3 relate to a filtration apparatus according to an embodiment of the present invention.

The filtration apparatus 100 according to the embodiment of the present invention includes a housing 10 forming an outer shape, a rotary drum 20 for filtering wastewater, and a power unit 30 for rotating the rotary drum. And may further include a washing unit 40.

The housing 10 has an inner space in which the rotary drum 20 is mounted in a substantially box shape. The upper portion of the housing 10 is open, and the cover 11 is detachably mounted. The cover 11 is formed with a transparent window 111 for observing a rotary drum located in a space inside the housing. The user can visually confirm the filter network 21 of the rotary drum 20 through the transparent window 111. [

The rotary drum 20 has a cylindrical shape and a filter net 21 for filtering foreign matter contained in wastewater is mounted on the outer circumferential surface. The filter net 21 is divided into a plurality of portions so as to facilitate repairing and replacement at the time of damage, and is detachably fixed to the frame 22 of the rotary drum 20 individually.

The housing (10) is provided with a central shaft (13) passing through the front and rear. The end of the central shaft 13 is fixed to the front and rear surfaces of the housing 10, and the inside of the central shaft 13 is hollow. The rotary drum 20 is rotatably coupled to the central shaft 13 by bearings. The distal end portion of the rotary drum 20 is opened, and the opened distal end portion is provided so as to be in contact with the inner wall of the housing 10.

The power unit 30 is configured to rotate the rotary drum 20 and includes a rotary motor 31 fixed to the rear upper portion of the housing, a sprocket 32 coupled to the rear of the rotary drum 20, And a chain 33 connecting the output shaft of the motor 31 and the sprocket 32. [ Accordingly, the rotary drum 20 can rotate based on the rotation axis 31 as the rotary shaft 31 rotates.

Here, the power unit can be replaced with a known rotational movement transmission means such as a pulley, a belt, gears, etc. in addition to a chain connection system.

An inlet 12 through which waste water to be treated flows into the rotary drum 20 is formed on one surface of the housing where the tip of the rotary drum 20 contacts. The wastewater flowing into the housing 10 through the inlet 12 flows directly into the interior of the rotary drum 20 through the tip of the rotary drum 20. [

At this time, a fluid pump (not shown) for introducing wastewater can be connected to the inflow pipe connected to the inlet 12. If the filtration device is installed at a low height and the wastewater flows naturally into the filtration device, the fluid pump may be omitted.

It is possible to simplify the structure of the pipe into which the wastewater flows into the housing 10 by forming the inlet 12 for allowing the wastewater to flow directly into the rotary drum 20 at the front end of the housing 10. In the conventional art, there is a disadvantage in that there is a limitation on the amount of inflow according to the diameter of the central shaft which is not free to change the size, by adopting the method of introducing the wastewater to be processed through the central axis of the rotary drum. In the embodiment of the present invention, Can be greatly expanded according to the design intention.

The water collected in the space between the housing 10 and the rotary drum 20 is filtered while passing through the filter net 21 of the rotary drum 20 because the wastewater to be treated flows straight into the rotary drum 20, And the wastewater before the filtration treatment can not be mixed.

Also, since the introduced wastewater enters the rotating drum 20, there is no problem that the wastewater flows through the complicated internal pipeline and clogs the pipeline or increases pollution as in the conventional technique.

The distal end of the rotary drum 20 and the inner wall surface of the housing 10 are structurally weak due to friction with the inner wall of the housing as the rotary drum 20 rotates. Further, since the external force is received by the pressure gradient formed inside and outside the rotary drum during operation of the filtration apparatus, the fragility is further increased. To overcome this, the present invention presents an improved vault structure.

4 and 5 relate to the airtight structure between the leading end of the rotary drum and the inner wall of the housing.

An inner wall of the housing 10 in contact with the distal end of the rotary drum 20 is provided with a mounting portion 50 for supporting the tip end of the rotary drum 20 and maintaining the airtightness between the rotary drum 20 and the rotating rotary drum 20.

The mounting portion 50 includes a mounting bracket 51 having one end fixed to the inner wall of the housing and the other end formed with a receiving groove H opened toward the rotary drum.

In the illustrated embodiment, the mounting bracket 51 is divided into a first part 512 and a second part 513. One part 512 includes a connecting piece 512a connected to the inner wall of the housing, a supporting piece 512b extended from the connecting piece 512a toward the inner space of the housing, and a connecting piece 512a at the middle of the supporting piece 512b. And a middle piece 512c extending in parallel with the intermediate piece 512c.

Two parts 513 are formed so as to cover the upper part of the first part 512. The one part 512 and the two parts 513 are bent in a semicircular shape corresponding to the tip of the rotary drum 20. [ That is, the mounting bracket 51 has a shape corresponding to the lower half circle of the circular cross section of the tip of the rotary drum 20. [

The mounting bracket 51 and the support block 52 and the elastic member 53 to be described later can be formed into a ring shape corresponding to the tip of the rotary drum 20. [

The connecting piece 512a is a part fixed to the rotary drum 20 and is configured to firmly fix the one part 512 to the inner wall of the housing by bolts and nuts or the like through welding or sealing. The end of the support piece 512b is wrapped around the tip of the rotary drum 20 to support it.

Two parts 513 are assembled to one part 512 to form receiving grooves H at the end of the mounting bracket 51. [ The receiving groove (H) also becomes semi-circular as the one or two parts are made to be bent into a semicircular shape.

The supporting block (52) is located in the receiving groove (H). The support block 52 is made of a synthetic resin material such as POM resistant to abrasion, and has a smooth surface facing the rotary drum 20.

A seal 521 for airtightness is interposed between the support block 52 and the support piece 512b or between the support block 52 and the two parts. This sealing ring 521 prevents sewage from passing through between the mounting bracket 51 and the support block 52. Although the seal 521 is shown as being provided on both the top and bottom of the support block 52 in the illustrated embodiment, the seal 521 may be provided on either side or may be omitted.

Between the intermediate piece 512c and the support block 52, an elastic member 53 for elastically supporting the support block 52 toward the entrance of the receiving groove is interposed. The elastic member 53 may be a coil spring, and the support block 52 and the intermediate piece 512c form a groove into which an end of the coil spring is positioned.

In another embodiment (not shown), the one or two parts forming the receiving groove may further include a lattice piece for partitioning the receiving groove along the longitudinal direction of the receiving bracket. The support block and the elastic member described above are mounted in the respective receiving grooves divided according to the lattice. The supporting block is provided in each of the receiving grooves divided by the lattice, so that the supporting block can be prevented from moving in the longitudinal direction of the receiving groove by unidirectional rotation of the rotating drum.

On the other hand, a sliding block 54, which is a ring-shaped slider, protrudes from the tip of the rotary drum 20. The slide block 54 is similar to the support block 52 and has a smooth surface.

The sliding block 54 is partially inserted into the receiving groove H. The end of the slide block 54 is in surface contact with the support block 52 elastically supported by the elastic member 53. [ As the rotary drum rotates, the slide block 54 rotates while frictionally abrading the support block 52.

Wear is progressed at the contact surface of the sliding block 54 and the supporting block 52 according to the long use of the filtration apparatus 100. [ The support block 52 is urged toward the slide block 54 by the elastic member 53 so that even if the thickness of the slide block 54 or the support block 52 is slightly reduced by abrasion, The surface contact of the block 52 remains unchanged. After the filtering device has been operated for a considerable period of time, the supporting block and the sliding block are replaced after the wear has progressed greatly.

Figure 6, on the other hand, relates to a filtration apparatus according to another embodiment of the present invention. The filtration apparatus according to another embodiment may include the technical features of the above-described embodiment as it is within the range not to be conflicted with the following description.

The mounting portion according to another embodiment includes a mounting bracket 51 and a support block 52. [ The mounting bracket 51 has a receiving groove facing the front end of the housing 10, and the supporting block 52 is mounted inside the receiving groove. Unlike the above-described embodiment, the elastic member is not interposed.

A ring-shaped slide block 54 protrudes from the rotary drum 20, and a part of the slide block 54 protruding into the receiving groove is inserted. The leading end of the sliding block 54 is in surface contact with the supporting block 54. [

And a pressing portion 17 for urging the front end portion of the rotary drum 20 forward toward the wall surface of the housing. In the illustrated embodiment, the pressing portion 17 includes a fixing block 171 which is coupled to the rear side of the center shaft 13, and a fixing block 171 which is interposed between the fixing block 171 and the rear side of the rotary drum 20, And a spring 172 for urging the drum 20 forward (leftward in Fig. 6) toward the wall surface of the housing. The fixed block 171 is detachably fixed to the central shaft 13 so as to release the urging of the spring 172 when the sliding block 20 or the supporting block 52 is repaired or replaced.

Compared with the above embodiment, although the elastic member is omitted in the mounting portion, even if the abrasion progresses between the sliding block 54 and the supporting block 52 as the pressing portion elastically supports the rotary drum forward, The slidable block and the support block are in surface contact with each other to maintain airtightness.

Referring back to FIG. 3, the bottom of the inner space of the housing 10 is formed into a semicircular section corresponding to the cylindrical shape of the rotary drum 20. As shown in FIG. Further, a drain pipe 14 used for cleaning the internal water of the filtration apparatus 100 is connected to the bottom of the bottom of the internal space.

The filtration apparatus 100 used in the filtration system is used to filter the organic sludge contained in wastewater, and some sludge has a property of sinking in water. Such immersion sludge adheres to the bottom and the wall of the filtration apparatus 100. Also, according to the prior art, since the housing is formed as a cube, there are angled corners formed by the wall surface and the bottom surface, so that the immersion sludge is easily accumulated in these corners. Feeding the sludge in the corner causes microbes and parasites to multiply rapidly, which causes the water quality in the filtration apparatus to deteriorate.

In the present invention, the bottom of the inner space of the housing 10 is formed to have a semicircular shape in order to solve the organic sludge stacked like this, thereby minimizing the space for accumulating the organic sludge.

On the other hand, after the filtration apparatus 100 is operated for a predetermined time, the cover 11 is opened and the inside of the filtration apparatus 100 is washed with high pressure water. At this time, the sludge and water that have stuck inside the housing 10 and fall off are collected in the drain pipe 14 by gravity, and then discharged to the outside of the housing by a fluid pump or the like. Accordingly, the inside of the filtration device can be easily cleaned, thereby improving convenience.

On the other hand, the washing unit 40 is for removing the clogging of the filter net 21 of the rotary drum 20 during use of the filtration apparatus 100. The washing unit 40 injects high-pressure water into the rotary drum 20, A water injection member 41 for separating the foreign material adhered to the rotary drum, and a water receiving member 42 for receiving the foreign material falling inside the rotary drum and discharging the foreign material to the outside.

Specifically, the water injection member 41 is spaced apart from the upper side of the rotary drum 20 and has a nozzle 411a for discharging high-pressure water toward the filter net 21 of the rotary drum 20, (411), and a fluid pump (413) for supplying high-pressure water to the water injection pipe (411).

On the other hand, the water receiving member 42 includes a hopper 421 which receives water sprayed from the water spray nozzle 411a and receives foreign substances separated and separated from the filter net 21, a hopper 421 and a hollow center shaft 13, And a connection pipe 422 that communicates with each other. The foreign matter and water flowing to the outside of the filtration apparatus via the central shaft 13 are discharged to the outside or treated in a separate water treatment apparatus outside the filtration apparatus and then returned to the outside.

FIG. 7 shows a water injection pipe 411 applied to the embodiment of the present invention. The nozzle 411a of the water injection pipe 411 has a long slit shape along the longitudinal direction of the rotary drum toward the outer peripheral surface of the rotary drum. The slit-shaped nozzle 411a increases the pressure of water sprayed on the rotary drum, thereby making it possible to more reliably separate the foreign substances adhered to the filter net.

Referring again to FIG. 2, a pump 15 and a pipe 16 for discharging water filtered through the filter net 21 of the rotary drum 20 to the outside of the housing are provided in the housing 10. If the filtering device is installed at a position higher than the water level of the facility where the filtered water is to be returned (for example, the water level of ten thousand or more), the pump 15 or the pipe 16 may be omitted and the drain pipe may be connected to the return pipe You can do it.

Hereinafter, the operation of the filtration apparatus will be described with reference to the accompanying drawings.

The wastewater containing the sludge flows directly into the interior of the rotary drum 20 through the inlet 12. The rotary drum 20 is gradually rotated by the power section 30 and the wastewater from the rotary drum 20 passes through the filter net 21 and is discharged into the space between the housing 10 and the rotary drum 20 .

At this time, as the rotary drum 20 rotates, the sliding block 54 is maintained in surface contact with the supporting block 52 and is slid. The supporting block 52 is strongly in surface contact with the sliding block 54 by the elastic member 53 and sealingly interposed between the supporting block 52 and the mounting bracket 51, So that it does not escape between the housing 10 and the distal end portion of the rotary drum 20.

On the other hand, the foreign matters filtered by the rotary drum 20 often block the mesh of the filter net 21 and are moved downwardly of the water injection pipe 411 by the rotation of the rotary drum 20. [ The foreign matter is dropped from the filter net 21 by the water pressure of the water sprayed from the slit nozzle 411a of the water injection pipe 411 and the separated foreign matter passes through the water receiving member 42 and the hollow central shaft 13 And is discharged to the outside of the filtration apparatus 100. The discharged foreign matter and water can be recovered through separate treatment.

The filtered water passing through the filter net of the rotary drum 20 is discharged to the outside of the housing 10 through the pump 15 placed on the rear side of the inner space of the rotary drum and is moved to the desired water returning place.

According to the present invention, the filter mesh clogging due to the high pressure of the slit-type nozzle is solved while a portion structurally weak in leakage between the housing and the rotating rotary drum is compensated. This makes it possible to use a filter network that is finer than the prior art.

100: Filtration device
10: Housing
11: cover 111: transparent window 12: inlet 13: central axis
14: drain pipe 15: pump 16: piping
17: pressing portion 171: fixed block 172: spring
20: rotary drum 21: filter net 22: frame
30: power section 31: rotation motor 32: sprocket 33: chain
40:
41: water injection member 411: water injection pipe 411a: nozzle 413: fluid pump
42: water receiving member 421: hopper 422: connecting pipe
50:
51: mounting bracket 512: 1 part 512a: connecting piece
512b: supporting piece 512c: intermediate piece H: receiving groove 513: two parts
52: support block 521: sealing 53: elastic member 54: sliding block

Claims (6)

A housing having an inner space,
A rotary drum having a filter net formed on its outer circumferential surface to filter out foreign matter while the open end of the rotary drum contacts the inner wall of the housing,
And a power portion for rotating the rotary drum,

An inlet port through which wastewater to be processed into the rotary drum flows is formed in the housing in contact with the tip of the rotary drum,

A ring-shaped sliding block is provided to protrude from the tip of the rotary drum,
Wherein an inner wall of the housing is provided with a mounting portion which contacts the sliding block and supports a front end portion of the rotary drum,

The mounting portion
One end portion is fixed to the inner wall of the housing and the other end portion is formed with a mounting bracket for forming a receiving groove for partially accommodating the sliding block,
A supporting block provided in the receiving groove and in surface contact with the sliding block,
And an elastic member interposed between the support block and the mounting bracket and elastically pressing the support block toward the slide block.
delete A housing having an inner space,
A rotary drum having a filter net formed on its outer circumferential surface to filter out foreign matter while the open end of the rotary drum contacts the inner wall of the housing,
And a power portion for rotating the rotary drum,

An inlet port through which wastewater to be processed into the rotary drum flows is formed in the housing in contact with the tip of the rotary drum,

A ring-shaped sliding block protruding from the front end of the rotary drum and having a pressing portion for elastically pushing the front end of the rotary drum forward toward the wall surface of the housing,

And an inner wall of the housing is provided with a mounting portion for contacting the sliding block and supporting a front end portion of the rotary drum,
The mounting portion
A mounting bracket having one end fixed to an inner wall of the housing and the other end forming a receiving groove for partially receiving the sliding block,
And a support block provided in the receiving groove and in surface contact with the sliding block. The method according to claim 1 or 3,
And a seal is interposed between the support block and the wall surface of the receiving groove. The method according to claim 1 or 3,
Wherein the mounting bracket is a semicircle supporting the lower end of the distal end of the rotary drum. The method according to claim 1 or 3,
Wherein the bottom of the inner space of the housing is semicircular corresponding to the shape of the rotary drum and is in communication with the drain pipe at the bottom of the inner space.

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