KR100718547B1 - Apparatus for filtering sludge from water for purification - Google Patents

Abstract

The present invention is a housing in which an inlet is formed at the bottom and an opening is formed at an upper surface thereof; A cover closing the opening of the housing; Cylindrical filtration assembly including a filtration membrane is installed vertically to separate the space inside the filter case; And spraying means rotatably installed in the filter assembly to remove contaminants adsorbed on the outer surface of the filtration membrane by spraying a portion of the filtered water toward the filtration membrane, wherein the contaminated water flows into the housing through the inlet. It is filtered while passing through the filtration membrane horizontally and is discharged through the circulating pipe, and during the discharge of pollutants relates to a water quality filtration device that is discharged to the outside through the inlet through the inlet accumulated in the filter assembly.

Water filtration device, filtration membrane

Description

Rotary upflow water filtering device {Apparatus for filtering sludge from water for purification}

1 is a view showing a schematic configuration of a water purification system employing a water filtration device according to a preferred embodiment of the present invention.

2 is a cross-sectional view showing a schematic configuration of a water filtration device according to a preferred embodiment of the present invention.

Figure 3 is a perspective view schematically showing the configuration of the filter assembly of the water filtration apparatus according to a preferred embodiment of the present invention.

Figure 4 is an exploded perspective view schematically showing the injection pipe assembly and the rotary connection means of the water filtering apparatus according to a preferred embodiment of the present invention.

5 is a cross-sectional view schematically showing the injection pipe assembly and the rotary connection means of the water filtering device according to a preferred embodiment of the present invention.

6 is a cross-sectional view showing a schematic configuration of a water filtration device according to another preferred embodiment of the present invention.

The present invention relates to a water filtration device, and more particularly, it is possible to effectively remove sediment sludge or sedimentation sludge, etc. existing in the water body of a closed water body such as a pond, and a vertical filtration membrane type, which is easy to assemble and disassemble the device. An upflow water quality filtration device.

In general, closed water bodies, such as natural or artificially-dried reservoirs or ponds, are mostly lacking or almost no influent. In such closed water bodies, water quality is severely contaminated if the rate of increase of naturally occurring and unspecified contaminants from outside exceeds the natural self-cleaning capacity, causing sedimentary sludge or sludge to be deposited on the bottom of the pond. .

The accumulated contaminants decay over time or rise above the water, causing odors, polluting water quality, and at the same time being a major cause of damage to the landscape. Therefore, the necessity of continuously removing such settling sludge or sedimentary sludge is absolutely required.

Conventionally, the general method for removing the sediment sludge or sedimentation sludge as described above was a method of draining all the water in the water body and dredging or discharging it using suction equipment. However, this method requires enormous manpower, time, and cost, and furthermore, as the pollutant increases again over time, it is inconvenient to repeat the pollutant removal operation periodically.

As another method of the related art, there is an attempt to inject a chemical into water or inject air to float a precipitate to remove it. However, when the body of water is very large, the removal efficiency is very low, it is very uneconomical to add the medicine and air injector and the removal of the injuries.

In view of the above, a system for constantly filtering sludge in order to purify the water quality of the closed water is proposed. According to this system, a plurality of inlets are formed at the bottom of a closed body such as a pond, and sludge is sucked through these inlets and then introduced into a separate purified water body through underground pipelines. Water introduced into the purified water is filtered through contaminants such as sludge while passing through the bottom filtration layer, and the purified water is again supplied to the original water along a separate pipeline.

However, such a system employs a so-called 'top-down' filtration method in which contaminated water seeps into the bottom layer, so that filtered contaminants or sludge will be deposited on the bottom sand layer. Therefore, the bottom of the purified water is severely polluted, causing odor or inhibiting the hydraulic tube. Furthermore, in order to periodically remove the sediment contaminants, when the water flows in the reverse direction to backwash the filtration layer, the sediment contaminants or sludge floats on the surface of the pond, increasing the pollution of the purified water, and further, In order to send and remove a large amount of water must be flowed, so the removal efficiency is not only low but also very economical.

As another conventional example, an automatic multilayer pressure filter is used. According to the operation of the filter, when the contaminated water sucked by the pump flows into the upper part of the filter, the contaminant is filtered by the filter layer while the water moves to the lower part of the filter layer by pressure. In this case, as the filtration continues, the filtration layer is blocked by contaminants, and the filtration efficiency is lowered. In order to remove the filtration layer, water is required to flow in the reverse direction.

In addition, the filtration device as described above cannot clean the filtration layer while filtering water. Therefore, when the filtration layer is blocked by contaminants such as sludge, the filtration layer must be stopped and then the filtration layer must be washed by a backwash operation.

In particular, the conventional water quality filtration apparatus has a large size and complicated assembly and disassembly of each component including a filtration membrane, which makes construction and maintenance difficult.

The present invention was devised in view of the above problems, and by adopting a rotary multilayer membrane upflow filtration method, it is possible to provide a water filtration device that can effectively remove sludge or contaminants contained in water without contaminating water quality of purified water. Its purpose is to.

It is still another object of the present invention to provide a rotary upflow water filtration device which can prevent the filtration membrane frame from being blocked by contaminants such as sludge by continuously and simultaneously cleaning the filtration membrane frame during filtration of water.

It is still another object of the present invention to provide a rotary upflow water filtration device that is easy to assemble and disassemble of each component by employing a vertically arranged filtration membrane frame.

In order to achieve the above object, there is provided a water filtering device according to a preferred embodiment of the present invention, a housing having an inlet formed at a bottom thereof and an opening formed at an upper surface thereof; A cover closing the opening of the housing; Cylindrical filtration assembly including a filtration membrane is installed vertically to separate the space inside the filter case; And spraying means rotatably installed in the filter assembly to remove contaminants adsorbed on the outer surface of the filtration membrane by spraying a portion of the filtered water toward the filtration membrane, wherein the contaminated water flows into the housing through the inlet. The filter is filtered while passing horizontally through the filtration membrane and is discharged through the circulation pipe. In the pollutant discharge operation, the pollutants accumulated under the filter assembly are discharged to the outside through the inlet.

Preferably, the filtration assembly, the upper rim member and the lower rim member and a plurality of vertical connecting members connected between them and the bottom of the cylindrical filter membrane frame is closed; And a filtration membrane detachably mounted to the filtration membrane frame.

Here, the filtration membrane may be coupled to the filtration membrane frame while interposed between a pair of filtration membrane supports.

Preferably, a flange is formed radially on the upper rim member of the filtration membrane frame, and the flange may be coupled to an annular fixing bracket formed on the housing.

The filtration assembly may include a first filtration assembly installed at a lower portion of the housing, and a second filtration assembly installed at an upper portion of the first filtration assembly to filter the water filtered by the first filtration assembly again. The filtration membrane provided in the second filtration assembly has pores that are finer than the filtration membrane in the first filtration assembly.

More preferably, the first and second filter assemblies include first and second filter membrane frames each having a radial flange formed on the upper rim member, and the flange of the first filter membrane frame is formed on the inner wall of the housing. It is coupled to the fixing bracket, the flange of the second filter membrane frame is coupled to the second fixing bracket formed around the upper opening of the housing.

According to the present invention, it further comprises an auxiliary drain pipe for discharging the contaminants concentrated in the space between the first filter assembly and the second filter assembly to the outside.

Preferably, the injection means, the filtered water supply pipe for supplying a portion of the water filtered by the filtration assembly into the housing by the driving force of the pump; And a plurality of injection pipe assemblies rotatably installed at an end of the filtrate water supply pipe by a rotary connection unit to inject the supplied filtrate water toward the filter membrane.

In addition, the injection pipe assembly, the body portion is in communication with the filtered water supply pipe and coupled to be relatively rotatable; A spray pipe installed vertically to be parallel to the filtration membrane and having a plurality of spray holes for spraying water toward the filtration membrane and rotating spray holes in one direction on a side surface thereof; And a connection part connecting the body part and the injection pipe.

The present invention further includes a universal joint means for coupling the filtered water supply pipe and the injection pipe assembly, which do not coincide with each other.

Preferably, the universal joint means, the spherical surface formed at the end of the filtered water supply pipe; A universal bush having a curved surface having a curvature corresponding to the spherical surface formed on an inner surface thereof; And a fixing nut for fixing the universal bush to an end portion of the filtered water supply pipe.

Preferably, the rotary connecting means, the coupling bush is fixed to the end of the filtered water supply pipe; A support bush fixed to the bottom of the filtration assembly; A first bearing interposed between the coupling bush and the body of the spray tube assembly; And a second bearing interposed between the support bush and the body of the spray tube assembly. In this case, the coupling bush is coupled to the universal bush.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Figure 1 shows a schematic configuration of a water purification system employing a rotary upflow water filtering device according to a preferred embodiment of the present invention.

Referring to the drawings, the water quality filtration device of the present invention may be installed in a pond, for example, a closed water body. The pond may be divided into a lower body of water (100) that accommodates most water and has a relatively low water surface, and an upper body of water or a purified water body (200) of a portion of which the surface of water is relatively higher than the lower body of water (100). have. The purified water 200 is a region where contaminated water is ejected after being filtered and purified. These purified water bodies 200 and lower water bodies 100 are connected by step water bodies 300 therebetween, and water flows from the purified water bodies 200 to the lower water bodies 100. In this embodiment, the pond is divided into the upper body and the lower body, but the present invention is not limited to this, it is a matter of course that can be applied to a pond consisting of a single body of water.

The water purification system of the present embodiment includes a plurality of sludge suction means 10 installed in the lower water body 100.

The sludge suction means 10 is to suck the contaminants, such as sludge precipitated on the bottom of the pond with water, they can be installed in a plurality of spaced apart from each other, the interval and the number of the water pollution and midnight ability, etc. Accordingly. Such sludge suction means 10 includes, but is not limited to, the apparatus disclosed in Applicant's Patent Registration No. 0524641, various configurations for sucking water and contaminants may be applied.

The sludge suction means 10 is connected to the first pump (see 30 in FIG. 2) by the suction pipe 20, the first pump 30 sucks water and sludge and at the same time high concentration as will be described later It provides the driving force to suction and discharge the separated sludge and contaminants.

The water and the sludge mixture introduced into the first pump 30 along the suction pipe 20 flows to the water filtration device 400 along the transfer pipe 22 connected to the first pump 30. The water filtration device of the present invention can be installed and used in the cab just below the purified water 200 as shown in FIG. In this case, various aquatic plants in the purified water 200 may be formed on the water filtration apparatus, thereby maintaining a natural landscape.

Referring to FIG. 2 in which the configuration of the water filtration device 400 according to the present invention is shown in more detail, the water filtration device includes a housing 410 having an inlet formed at a bottom thereof. Preferably, the housing 410 may be integrally manufactured with a cylindrical stainless steel container, but is not limited thereto.

An inlet is formed at the bottom of the housing 410, and an end of the transfer pipe 22 connected to the first pump 30 is connected thereto. In addition, the upper end of the housing 410 is open, the cover 411 is detachably installed at the open upper end.

An outlet is formed at the top or the cover 411 of the housing 410, the outlet is connected to the circulation pipe 40. Therefore, the water filtered in the housing 410 is supplied to the purified water region 200 along the circulation pipe (40).

In addition, the housing 410 is provided with at least one inspection window (410a, 410b), it is possible to grasp the state inside the housing 410 and take necessary measures.

According to the present invention, at least one filter assembly 420 or 430 is installed in the housing 410 to filter contaminated water. The configuration of the filter assembly 420, 430 is shown in more detail in FIG.

Referring to FIG. 3, the filtration assembly 420 includes a cylindrical filtration membrane frame 421 and a filtration membrane 422 detachably mounted to the filtration membrane frame 421.

The filtration membrane frame 421 is composed of an upper rim member 423 and a lower rim member 424 and a plurality of vertical connection members 425 connected therebetween, so that the filtration membrane 422 is coupled therebetween. The opening 421a is formed.

The filtration membrane 422 is coupled to the opening 421a. Specifically, as shown in FIG. 3, the filtration membrane 422 is interposed between a pair of filtration membrane supports 431 'and 432', and coupled to each other. A plurality of openings 431a are formed in the filtration membrane supports 431 'and 432', and a plurality of fastening holes 431b for fastening the filtration membrane 422 are formed. In addition, a plurality of through holes 422a corresponding to the fastening holes 431b are formed in the filtration membrane 422. Therefore, the filtration membrane 422 is placed between the filtration membrane supports 431 'and 432', and a fastening member such as a bolt (not shown) is inserted and fixed through the fastening hole 431b and the through hole 422a. 422 may be coupled to the filtration membrane supports 431 'and 432'.

The bottom of the filtration membrane frame is in a closed state, and as will be described later, when the multiple filtration method is employed, a center hole may be formed for installation of the injection means. That is, when two filtration assemblies 420 and 430 are employed as in the embodiment shown in FIG. 2, the bottom 436 of the first filtration membrane frame 431 is in a closed state, while the second filtration membrane frame is closed. A center hole 426a is formed at the bottom 426 of 421 to install the injection means. However, since the center hole 426a is also sealed with the installation of the injection means, the inner and outer spaces of the filter assemblies 420 and 430 are separated from each other. Preferably, the bottom 436 of the first filtration membrane frame 431 has a shape recessed inward to secure a buffer space for the incoming water and to facilitate the flow.

The assembled filtration membrane 422 is coupled to the filtration membrane frame 421. For example, the combination of the filtration membrane 422 and the filtration membrane supports 431 'and 432' may be formed in the opening 421a inside the filtration membrane frame 421. ) Can be fixed to close. Preferably, coupling holes 423a, 424a, 425a are formed in the upper rim member 423, the lower rim member 424, and the vertical connection member 425 of the filtration membrane frame 421, where the fastening bolt By inserting the filter assembly can be fixed. However, this coupling method is not limited by this embodiment and various coupling methods that can be modified may be employed.

The filtration membrane 422 may be configured by combining a plurality of meshes having fine holes formed in several layers. Typically, the filtration membrane 422 may be made of stainless steel or synthetic resin or fiber. However, the configuration or material of the filtration membrane is not limited by the present invention, and existing filtration membranes of various materials capable of filtering water may be employed in various structures.

Referring back to FIG. 2, the filter assemblies 420 and 430 may be installed in plural in the housing 410 to filter the water introduced therein in multiple numbers. In this case, the filtration membrane 422 is vertically arranged inside the housing 410 to allow the water to be filtered while flowing horizontally.

A flange 427 is formed radially on the upper rim member 423 of the housing 410, and the flange 427 is coupled to the annular fixing brackets 441 and 442 formed in the housing 410. Specifically, the first fixing bracket 441 is formed on the inner wall of the housing 410, and the second fixing bracket 442 is formed around the upper opening of the housing 410. The first filtration membrane frame 431 is installed on the first fixing bracket 441, and the second filtration membrane frame 421 is fixed to the second fixing bracket 442.

The outermost diameter of the first filtration membrane frame 431, that is, the diameter of the upper flange, is smaller than the diameter of the upper opening of the housing 410, so that the first filtration membrane frame 431 is disposed through the upper opening of the housing 410. After inserting into the 410, the upper flange is coupled to the first fixing bracket 441 formed on the inner wall of the housing 410.

According to the above combination, a plurality of spaces are formed in the housing 410. That is, a first concentration region S1 is formed between the bottom of the housing 410 and the outer surface of the first filtration assembly 430, and the inner surface of the first filtration assembly 430 and the second filtration assembly 420. A second concentrated region S2 is formed between the outer side surfaces of the second purified region S2, and a purified water completion region S3 is formed between the inner surface of the second filtration assembly 420 and the upper end of the housing 410. As will be described later, the contaminated water is purified after flowing into the first concentrated region S1 and sequentially flowing toward the second concentrated region S2 and the purified water complete region S3.

Preferably, the filtration membrane downstream of the direction in which the water flows, i. It is configured to. Therefore, when contaminated water is filtered while passing through the first and second filtration membranes sequentially, the region upstream (that is, the first concentrated region S1) contains larger particles of sludge or contaminants, and contaminants are filtered. The clean water flows upward through the purified water completion region S3 downstream and flows into the purified water region 200.

According to the present invention, the filter assembly 420, 430 is provided with a spray means for injecting water to remove the sludge or contaminants adsorbed on the filter membrane 422. The injection means, the filter water supply pipe 50 for supplying a portion of the filtered water back to the housing 410 while passing through the filter assembly (420, 430), and rotatable to the end of the filtered water supply pipe 50 And a plurality of spray tube assemblies 450 and 460 for spraying the supplied filtered water.

Preferably, the filtered water supply pipe 50 is branched from the circulation pipe 40 for supplying the water filtered by the water filtration device 400 back to the pond extends to the center of the interior of the housing 410. The second pump 60 is installed on the path of the filtered water supply pipe 50 to provide a driving force for sucking a part of the filtered water.

Injection pipe assembly 450, 460 is rotatably installed at the end of the filtered water supply pipe 50, the configuration of each part will be described with reference to Figures 4 and 5 shown in more detail.

Referring to the drawings, a plurality of injection pipe assembly (450, 460) is in communication with the filtered water supply pipe 50 is supplied with water therefrom, rotatably connected around the coupling portion with the filtered water supply pipe (50) do.

The injection tube assembly 450 is preferably parallel to the filtration membrane 422 of the filtration assembly 420 and the body portion 451 which is in communication with the filtrate supply pipe 50 and coupled to be rotatable relative thereto. , A vertically installed injection pipe 452 for injecting water toward the filtration membrane 422, and a connecting portion 453 for connecting the body 451 and the injection pipe 452 to each other. The body 451, the injection pipe 452, and the connection portion 453 have a pipe shape in which all of the hollows are formed.

The injection pipe 452 is formed with a plurality of injection holes 452a toward the filtration membrane 422. The injection hole 452a may be formed in front to face the filtration membrane 422 or may be formed obliquely at an angle with respect to the filtration membrane 422. In addition, the injection hole 452b for rotation in one direction may be further formed on a side surface of the injection pipe 452 so that the injection pipe assembly 450 may rotate. This is to allow the injection tube assembly 450 to rotate in response to spraying water through the rotary injection hole 452b as described below. The number and size of formation of the injection hole 452a may be appropriately set in consideration of the size of the filtration membrane, the processing capacity and the efficiency. In addition, the injection hole 452a may be formed as a conventional through hole or may be configured in the form of a nozzle.

In this embodiment, two pairs of injection tube assemblies 450 and 460 are provided, and the injection tube assembly 460 below also includes a body portion 461, an injection hole 462a, and a rotary injection hole 462b. This injection pipe 462 and the connection part 463 which connects these are included. Here, the body portion 461 is connected to the body portion 451 of the injection tube assembly 450 at the top.

As described above, the injection tube assembly 450 is rotatably coupled around the coupling portion with the filtrate water supply pipe 50, which is made through the rotation connection means.

The rotary connecting means is a coupling part 471 fixed to the end of the filtered water supply pipe 50, the support bush 472 is fixed to the filtration assembly 420, the coupling bush 471 and the support bush Bearings 473 and 474 interposed between the 472 and the body 451 of the injection tube assembly 450.

The coupling bush 471 is fixed to an end portion of the filtered water supply pipe 50 extending to the center portion of the housing 410. The body 451 of the injection pipe assembly 450 is inserted into the coupling bush 471, and a ball bearing 473 is installed therebetween. Preferably, a ring bracket 475 may be installed to fix the ball bearing 473, and a lidena 476 may be additionally installed to prevent inflow of foreign substances and to seal the ball bearing 473.

In addition, the support bush 472 is fixed to the center hole 426a formed at the bottom (426 of FIG. 3) of the filtration assembly 420, and the body 451 of the injection pipe assembly 450 is supported by the support bush 472. ) Is inserted. In this case, a support rib 477 is formed in the body 451 of the injection pipe assembly 450, and a thrust bearing 474 is interposed between the support rib 477 and the support bush 472. Additionally, a lidena 478 may be further installed between the support bush 472 and the body 451 of the injection pipe assembly 450 to prevent foreign matter from entering and sealing. By the above combination, the injection tube assembly 450 may be installed to be rotatable inside the housing 410.

Although specifically described the coupling between the injection pipe assembly 450 and the filtrate water supply pipe 50 in the present embodiment, it should be understood that the present invention is not limited by this embodiment, the injection pipe assembly is Any configuration employing a conventional bearing may be applied as long as it can be rotatably coupled to the filtered water supply pipe.

According to the present invention, a universal joint means is interposed between the filtered water supply pipe 50 and the injection pipe assembly 450. Universal joint means in this specification is to enable mutual assembly and coupling even when the central axis of the filtered water supply pipe 50 and the central rotation axis of the body portion 451 of the injection pipe assembly 450 does not coincide on the same line. . Such discrepancies often occur during installation and assembly. That is, the filtered water supply pipe 50 is inserted through a hole formed in the center of the cover 411, the body portion 451 of the injection pipe assembly 450 is the center of the injection pipe 452, that is, the filter frame ( It is located on the center line of the 421. Therefore, the position of both is often inconsistent due to design error, manufacturing error, assembly and construction error, etc. In this case, a means for easily assembling the both while eliminating such inconsistency is needed.

To this end, the universal joint means has a spherical surface 481 formed at the end of the filtered water supply pipe 50, a universal bush 483 formed on the inner surface of the curved surface 482 corresponding to the spherical surface 481, and And a fixing nut 484 that fixes the universal bush 483 to the end of the filtered water supply pipe 50.

The spherical surface 481 imposes a degree of freedom to arrange the filtrate water supply pipe 50 in any direction within a predetermined range. A curved surface 482 having a curvature corresponding to the spherical surface 481 is formed on an inner surface of the universal bush 483 so as to receive and support an end portion of the filtered water supply pipe 50 and to be slidable on a mutual curved surface. . The fixing nut 484 is formed on the inner circumferential surface of the pressing flange portion 485 for pressing and fixing the spherical surface 481 of the filtered water supply pipe 50, for example, the screw portion formed on the outer surface of the universal bush 483 By screwing it is fixed to the filtered water supply pipe (50).

The universal bush 483 coupled in this manner is coupled with the coupling bush 471 described above. Therefore, even though the centers of the filtration water supply pipe 50 and the body 451 of the injection pipe assembly 450 do not coincide with each other, the universal joint means enables a smooth coupling.

Meanwhile, the contaminants concentrated in the housing 410 are discharged along the transfer pipe (22 of FIG. 2) connected to the lower end thereof, and the transfer pipe 22 is connected to the first pump 30. Connected with Therefore, the contaminants sucked through the transfer pipe 22 by the driving force of the first pump 30 flow along the main drain pipe 24 and are discharged to the outside through the external drain pipe 26.

In addition, according to the present invention includes an auxiliary drain pipe 28 for discharging the contaminants concentrated in the second concentration region (S2) between the filter assembly (420, 430) to the outside. The auxiliary drain pipe 28 is connected between the second concentration region (S2) formed between the filter assembly (420, 430) and the main drain pipe 24 to discharge the contaminants by the driving force of the first pump (30). Done.

The configuration of the illustrated drain pipe is merely an embodiment for simply configuring a pipe, and the present invention is not limited to this configuration, and the drain pipe may be configured as a separate path from the suction pipe and the transfer pipe.

Further, preferably, pressure sensors 29a, 29b and 29c are installed to determine the appropriate drainage time by measuring the pressure inside the regions S1, S2 and S3 and measuring the concentration of accumulated contaminants. Can be.

Reference numerals 71, 72, 73, 74, 75 which are not described in FIG. 2 indicate valves, respectively. These valves selectively open or close each conduit to establish the flow path of water for filtration and the flow path of water for contaminant discharge.

Although the pipes between the suction means, the pump and the water filtration device have been described in detail in the present specification and the drawings, the pipes between them may be modified within the scope of the technical idea of the present invention. For example, a plurality of pumps may be employed to be distinguished for each use.

The characteristic structure of the water filtration device according to the invention is very advantageous for assembly and disassembly. Specifically, as described above, the outermost diameter of the first filtration membrane frame 431, that is, the diameter of the upper flange is smaller than the diameter of the upper opening of the housing 410, so that the first filtration membrane frame 431 may be connected to the housing 410. After insertion into the housing 410 through the upper opening of the upper flange is assembled by coupling to the first fixing bracket 441 formed on the inner wall of the housing 410.

The second filtration assembly 420 is integrally coupled with the injection pipe assemblies 450 and 460 and then inserted into the housing 410 through the opening at the top of the housing 410, and then The upper flange 427 may be assembled by engaging the outer circumferential portion of the upper opening of the housing 410 or the second fixing bracket 442.

The coupling between the injection pipe assembly 450 and the filtrate water supply pipe 50 can be easily made by the universal joint means as described above. That is, after coupling the universal bush 483 to the injection pipe assembly 450 by the coupling bush 471, the spherical surface 481 and the curved surface 482 of the universal bush 483 formed at the end of the filtered water supply pipe 50 ) To each other and then fixed with a fixing nut (484).

Even when dismantling or repairing, opening the cover 411 and disassembling the upper flange 427 of the second filtration frame 421 allows the injection pipe assembly 450 and the filtration assembly 420 to be easily out of the housing 410. I can pull it out.

Then, the operation of the rotary upflow water filtering device according to a preferred embodiment of the present invention having the configuration as described above will be described.

In the operation of the water filtration apparatus according to the present invention, first, the first pump 30 is driven to suck the sludge and contaminants together with water from the lower body 100 through the suction means 10 and the suction pipe 20. . At this time, the valves 71 and 73 are in an open state, and the valves 72, 74 and 75 are in a closed state.

The contaminated water introduced into the first pump 30 through the suction pipe 20 is introduced into the housing 410 of the water filtration device 400 along the transfer pipe 22.

Subsequently, the contaminated water introduced through the inlet of the lower end of the housing 410 is filtered while passing through the first filtration assembly 430. That is, the introduced contaminated water hits the bottom 436 of the first filtration membrane frame 431 to be buffered and then rises along the side of the housing 410 to pass through the first filtration membrane 422 placed vertically. .

At this time, the filtered sludge contaminants adhere to the outer surface of the first filtration membrane 422, and water passes through the first filtration membrane 422 to the second filtration assembly 420. Preferably, in the first filtration membrane 422, pollutant particles having a relatively large size are filtered out.

Next, the finer contaminants are filtered while the contaminated water flows upward in the horizontal direction through the second filtration membrane 422 disposed vertically.

The clean water purified while passing through the plurality of filter assemblies in the same manner as described above is discharged to the purified water completion region S3 and spouted into the purified water region (200 in FIG. 1) through the circulation pipe 40, and then the stepped water region 300. Follow the flow to the lower body (100). As another alternative, the purified water may be directly supplied to the bottom of the lower body 100 of the pond through the circulation pipe 40.

According to the present invention, while the water is filtered and purified as described above, the filtration membrane is cleaned while the injection means are simultaneously operated.

Specifically, a part of the water purified by the plurality of filter assemblies 430 and 420 and re-supplied to the pond through the circulation pipe 40 is connected to the filtered water supply pipe 50 by the driving force of the second pump 60. Accordingly supplied into the housing 410.

Water supplied through the filtrate water supply pipe 50 is introduced into the injection pipe assembly 450 rotatably connected to an end thereof and sprayed through the injection hole 452a. At this time, the water injected from the injection hole (452a) hits the filtration membrane 422, so that the sludge contaminants adsorbed on the outer surface of the filtration membrane 422 is dropped by the injected water to descend downward do.

In addition, as the water is injected through the rotary injection hole 452b formed in one direction in the injection pipe assembly 450, the injection pipe assembly 450 in one direction (clockwise or counterclockwise) in response to the injection pressure of water. Will rotate. Accordingly, the injection pipe 452 of the injection pipe assembly 450 rotates while being adjacent to the filtration membrane 422, thereby spraying water, thereby allowing sludge adsorbed on the outer surface of the filtration membrane 422 to be easily dropped. have.

When the filtration process of the contaminated water is continued, more contaminants are accumulated and concentrated in the first and second concentration regions S1 and S2. The higher the concentration of contaminants present in the first and second concentration regions S1 and S2, the more contaminants will be constantly adsorbed onto the filtration membrane 422, and thus the first and second concentration regions S1 and S2. The internal pressure will gradually increase. The pressure sensor 29a or 29b causes the drainage operation to be performed manually or automatically when the resultant values of the pressures in the concentrated regions S1 and S2 exceed the predetermined reference values.

In the drainage operation, the valves 72, 74, 75 are opened, and the valves 71, 73 are closed.

In this state, when the first pump 30 is driven, the water flows back and the water inside the housing 410 is discharged to the external drain pipe 26 through the transfer pipe 22 and the main drain pipe 24. Then, the contaminants accumulated in the first concentrated region S1 are discharged through the transfer pipe 22 together with water, and the contaminants accumulated in the second concentrated region S2 between the filter assemblies 420 and 430 are supplemented. It is discharged to the main drain pipe 24 through the drain pipe (28). At this time, since the injection means continues to operate for a predetermined time, some contaminants adsorbed on the outer surface of the filtration membrane 422 are also dropped by the sprayed water, thereby further facilitating the discharge.

Although the drainage is made through the transfer pipe 22 in this embodiment, the present invention is not limited thereto. For example, a separate drain pipe (not shown) is installed at the bottom of the housing 410, and the transfer pipe 22 is closed. Sludge and contaminants may be discharged through the drain pipe.

A rotary upflow water filtration device according to another preferred embodiment of the present invention is shown in FIG. 5. Here, the same reference numerals as in the above-described drawings indicate the same members.

A single filtration assembly 510 is provided in the housing 410 of the water filtering apparatus according to this embodiment. The filtration assembly 510 also includes a cylindrical filtration membrane frame 511 as described above, and a filtration membrane 512 detachably mounted to the filtration membrane frame 511.

The bottom 513 of the filtration membrane frame 511 is hermetically sealed to form a concave recessed shape to secure a buffer space for the incoming water and to facilitate the flow.

The injection tube assembly 450 is rotatably supported on the bottom 513 of the filtration membrane frame 511. That is, a thrust bearing 530 is interposed between the bottom 513 of the filtration membrane frame 511 and the body 521 of the injection pipe assembly 450.

As described above, the configuration of the present embodiment can be said to be a state in which the first filtration assembly 430 is removed in the embodiment shown in FIG. Functions and coupling states of the other components are the same as in the above-described embodiment, and thus detailed descriptions thereof will be omitted. This embodiment is identical to the embodiment described above in operation, except that a single filter assembly is employed.

According to the rotary upflow water filtration device of the present invention, the filter assembly is installed in stages and the water is filtered upwards, and at the same time the sludge and contaminants are eliminated through the injection means, so that the filtration membrane is blocked over time and thus The fall of filtration efficiency can be prevented. In addition, since the filtration membrane cleaning proceeds simultaneously while water is purified, there is no need to stop the operation of the apparatus for filtration membrane cleaning.

Furthermore, the water filtration device of the present invention facilitates assembly and disassembly of components by vertically aligning the filtration assembly and the filtration membrane, and in particular, by providing a universal joint means between the filtration water supply pipe and the injection pipe assembly, even if the center of gravity does not coincide with the device. Easy assembly and construction of the.

Claims (13)

A housing having an inlet formed at a bottom thereof and an opening formed at an upper surface thereof; A cover closing the opening of the housing; A cylindrical filtration assembly including a filtration membrane vertically installed to separate a space inside the housing; And And spraying means rotatably installed in the filtration assembly to eject contaminants adsorbed on the outer surface of the filtration membrane by spraying a portion of the filtered water toward the filtration membrane. The contaminated water flows into the housing through the inlet and is filtered while passing horizontally through the filtration membrane, and then discharged through the circulation pipe. In the pollutant discharge operation, the pollutant accumulated in the lower part of the filter assembly is discharged to the outside through the inlet. The method of claim 1, The filtration assembly, A cylindrical filtration membrane frame having an upper rim member and a lower rim member and a plurality of vertical connection members connected therebetween, the bottom of which is closed; And And a filtration membrane detachably mounted to the filtration membrane frame. The method of claim 2, And the filtration membrane is coupled to the filtration membrane frame while interposed between a pair of filtration membrane supports. The method of claim 2, A flange is formed radially on the upper rim member of the filter membrane frame, and the flange is coupled to an annular fixing bracket formed on the housing. The method of claim 2, The filtration assembly, A first filtration assembly installed under the housing; A second filtration assembly installed on an upper portion of the first filtration assembly and filtering the water filtered by the first filtration assembly again; The water filtering device, characterized in that the filtration membrane provided in the second filtration assembly has a finer hole than the filtration membrane in the first filtration assembly. The method of claim 5, The first and second filtration assembly includes first and second filtration membrane frame, each of which is radially flanged to the upper rim member, The flange of the first filtration membrane frame is coupled to the first fixing bracket formed on the inner wall of the housing, The flange of the second filtration membrane frame is coupled to the second fixing bracket formed around the upper opening of the housing. The method of claim 5, Water filtering device further comprises a secondary drain pipe for discharging the contaminants concentrated in the space between the first filter assembly and the second filter assembly to the outside. The method according to any one of claims 1 to 7, The injection means, A filtered water supply pipe for supplying a part of the water filtered by the filter assembly to the inside of the housing by a driving force of a pump; And And a plurality of spray pipe assemblies rotatably installed at an end of the filtered water supply pipe by a rotary connection unit to spray the supplied filtered water toward the filter membrane. The method of claim 8, The injection pipe assembly, A body part connected to the filtrate supply pipe and coupled to be relatively rotatable; A spray pipe installed vertically to be parallel to the filtration membrane and having a plurality of spray holes for spraying water toward the filtration membrane and rotating spray holes in one direction on a side surface thereof; And Water filtering device, characterized in that consisting of a connecting portion for connecting the body portion and the injection pipe. The method of claim 8, Water filtering apparatus further comprises a universal joint means for coupling the filtered water supply pipe and the injection pipe assembly does not coincide with each other. The method of claim 10, The universal joint means, A spherical surface formed at an end of the filtered water supply pipe; A universal bush having a curved surface having a curvature corresponding to the spherical surface formed on an inner surface thereof; And And a fixing nut for fixing the universal bush to an end portion of the filtered water supply pipe. The method of claim 8, The rotary connection means, A coupling bush fixed to an end of the filtered water supply pipe; A support bush fixed to the bottom of the filtration assembly; A first bearing interposed between the coupling bush and the body of the spray tube assembly; And And a second bearing interposed between the support bush and the body of the injection tube assembly. The method of claim 12, It further comprises a universal joint means for coupling the filtered water supply pipe and the injection pipe assembly does not coincide with each other central axis, The universal joint means, A spherical surface formed at an end of the filtered water supply pipe; A universal bush having a curved surface having a curvature corresponding to the spherical surface formed on an inner surface thereof; And And a fixing nut for fixing the universal bush to an end of the filtered water supply pipe. The coupling bush is water filtering device, characterized in that coupled to the universal bush.

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