Micro filtration device that makes it easy to clean the filter

Abstract

The present invention relates to a microfiltration device that facilitates easy filter cleaning. To realize this, the present invention is characterized by comprising: a housing having an inlet formed on one side and an outlet formed on the other side, with an internal space formed therein; a cylindrical housing rotatably installed in the space of the housing, having a first flange formed at an end with an open center on one side and a second flange formed at an end with a closed center on the other side, with a plurality of installation holes formed along the outer circumference in the central part between them; a filter unit installed in each of the installation holes; a cleaning unit composed of a cleaning water pump, a cleaning water transfer pipe for moving cleaning water, and a plurality of spray nozzles installed at regular intervals along the cleaning water transfer pipe to spray cleaning water; and a cleaning water recovery unit composed of a receiving member installed inside the housing for receiving cleaning water and a discharge pipe for discharging cleaning water to the outside.

Description

Technology Field

[0001] The present invention relates to a microfiltration device for the advanced treatment of various types of contaminated water, and more specifically, to a microfiltration device that facilitates easy filter cleaning, capable of effectively cleaning the filter used in the microfiltration device for the advanced treatment of contaminated water. Background Technology

[0002] In general, treatment facilities for domestic wastewater, industrial wastewater, livestock wastewater, and other sources of pollution are scattered across cities, counties, and villages nationwide, and in the future, there are plans to promote the use of gray water systems in buildings to conserve water resources.

[0003] As the treated water generated from the above treatment facility is severely contaminated due to chemical treatment, fish and algae inhabiting the river become contaminated with heavy metals, producing deformed fish and algae, and as eutrophication occurs in the river, red tide, cyanobacteria, diatoms, and phytoplankton occur.

[0004] The aforementioned eutrophication is caused by an increase in the amount of pollutants containing nitrogen and phosphorus flowing into rivers, and such pollutants cause severe algal blooms in the rivers; in particular, these pollutants contaminate drinking water, causing serious harm to the human body.

[0005] Therefore, although various measures to ecologically treat pollutants flowing into rivers are being attempted in the field of water purification, conventional ecological treatment technologies for such pollutants have been limited to chemical treatment methods such as microbial coagulants. Consequently, these methods are not sustainable and are limited to one-time, short-term, or annual treatments, resulting in reduced effectiveness in water quality improvement.

[0006] Furthermore, large, medium, and small-sized wastewater treatment plants face limitations in proactively responding to fluctuations in wastewater treatment volume, and there are many difficulties in the filtration treatment of recycled water (graywater), the separation of filtered suspended solids, and the treatment of separated water.

[0007] Meanwhile, contaminated water transported from the source of discharge to a treatment facility, such as a sewage treatment plant, is highly treated through each purification process at the plant and discharged into public water bodies.

[0008] These wastewater treatment plants typically purify contaminated water through tertiary treatment. Primary treatment is a process of physically separating solids and liquids, and the organic sludge generated by primary treatment can be disposed of through incineration or landfill, or used as fertilizer or soil conditioner. Organic substances not treated in the primary treatment process undergo a secondary treatment process using various biological treatment methods, and then in tertiary treatment, suspended fine particles are removed based on advanced treatment technologies such as filtration devices.

[0009] However, conventional sand filters installed in filtration devices to remove suspended fine particles from wastewater require periodic backwashing, but they have problems such as difficulty in cleaning, high usage of backwash water, and inconvenient replacement.

[0010] Furthermore, while fibrous disc filters used in conventional filtration devices are relatively easier to clean and replace compared to sand filters, they still require a large amount of backwash water and have low cleaning efficiency during backwashing, resulting in high costs due to frequent replacements and significant difficulties in maintenance. Prior art literature

[0011] Republic of Korea Registered Utility Model Publication No. 20-0337564 (Date of publication: January 7, 2004) The problem to be solved

[0012] The present invention is devised to solve the aforementioned problems and aims to provide a microfiltration device with an easy-to-clean filter that improves backwashing efficiency and minimizes the amount of backwash water used by improving the filter used in the filtration device, while extending the filter replacement cycle and facilitating maintenance.

[0013] The technical problems that the present invention aims to solve are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0014] A microfiltration device with easy filter cleaning according to one embodiment of the present invention for realizing the purpose described above,

[0015] An enclosure having an inlet formed on one side to allow wastewater to flow in, an outlet formed on the other side facing it to allow filtered wastewater to be discharged, and a space of a predetermined size formed inside, and

[0016] A cylindrical housing that is installed to be rotatable in place within the space of the above-mentioned housing, wherein a first flange is formed at an end with an open center on one side and a second flange is formed at an end with a closed center on the other side, and a plurality of installation holes are formed at regular intervals along the outer circumference in the central part between the first and second flanges;

[0017] A filter unit installed in each of the above-mentioned installation holes, which filters wastewater flowing into the interior of the housing and discharged through the installation holes, and

[0018] A washing unit comprising a washing water pump, a washing water transfer pipe arranged along the longitudinal direction of the housing at the upper part of the axial center of the housing and moving washing water supplied through the washing water pump, and a plurality of spray nozzles installed at regular intervals along the washing water transfer pipe and spraying washing water onto a filter unit located at the upper part of the axial center of the housing, and

[0019] The device comprises a washing water recovery unit installed inside the housing and configured to receive washing water generated during the process of washing the filter unit by the washing water, and a discharge pipe connected at one end to the receiving member and extended to the outside of the housing at the other end to discharge the washing water received in the receiving member to the outside.

[0020] More preferably, the upper surface of the above-mentioned housing may be configured to be opened and closed by a cover while in an open state.

[0021] More preferably, a first bulkhead and a second bulkhead are formed on opposite sides facing each other in the space of the above-mentioned housing, with a through hole formed in the center, and the first flange of the housing is installed by being rotatably fitted into the through hole of the first bulkhead, and the second flange of the housing is installed by being rotatably fitted into the through hole of the second bulkhead, and brackets are installed on the first and second bulkheads from all sides centered on the through hole, and rollers are installed at the ends of the brackets so as to be in contact with the inner circumference of the first and second flanges of the housing, and the outer circumference of the second flange may be configured to be connected to a belt that rotates according to the operation of a pulley driven by a drive motor.

[0022] More preferably, an annular guide ring is installed at a point spaced inward from the ends of the first and second flanges, and a plurality of support rollers may be installed on the inner surface of the first and second partitions to contact the front surface of the guide ring.

[0023] More preferably, the filter portion may be composed of a filter frame having a lower portion open in the installation hole that is detachably installed, and a filter member installed in a plurality of through holes formed on the upper portion of the filter frame.

[0024] More preferably, the upper part of the filter frame may be configured in any one of the following shapes: semicircular, arc-shaped, triangular, square, pentagonal, hexagonal, or trapezoidal.

[0025] More preferably, the upper part of the filter frame is configured in a trapezoidal shape, and a filter member may be installed in each of the through holes formed on the upper surface and the inclined surfaces on both sides.

[0026] More preferably, an auxiliary filter member may be installed in the open lower part of the filter frame.

[0027] More preferably, the filter member may be composed of a mesh made of polyester material or a mesh made of SUS316 material.

[0028] More preferably, the auxiliary filter member may be composed of a mesh made of polyester material or a mesh made of SUS316 material, and may be configured to have pores larger in size than the pores of the filter member.

[0029] More preferably, the washing water transfer pipes are arranged along the longitudinal direction of the housing above the axial center of the housing and are composed of at least one pair spaced horizontally apart from each other, and a spray nozzle installed in the washing water transfer pipe located above the axial center of the housing may be rotatably installed from the washing water transfer pipe so that the spraying direction can be adjusted.

[0030] More preferably, the washing water transfer pipe is branched into an auxiliary transfer pipe, the auxiliary transfer pipe is introduced into the interior of the housing and arranged along the longitudinal direction of the housing, and a plurality of auxiliary spray nozzles may be installed at regular intervals in the auxiliary transfer pipe located inside the housing.

[0031] More preferably, the auxiliary injection nozzle may be rotatably installed from the auxiliary transfer pipe so that the injection direction can be adjusted.

[0032] More preferably, the discharge pipe drawn out to the outside of the enclosure is divided at one point and connected to each other through an overflow box, and the overflow hole formed on the surface of the enclosure can be configured to communicate with the overflow box.

[0033] More preferably, an ultrasonic level sensor is installed inside the housing to detect the water level filling the housing, and if the water level exceeds a set level, the control unit can be configured to drive the driving motor of the housing to rotate the housing and drive the washing water pump of the washing unit so that the filter unit is washed by the washing water sprayed through the spray nozzle. Effects of the invention

[0034] The microfiltration device according to the present invention, which is easy to clean, has the following effects.

[0035] In other words, a cylindrical housing with a filter installed along its outer circumference is installed inside the filtration device. When wastewater flows into the housing and passes through the filter before being discharged to the outside, and the filter becomes contaminated and clogged, the filter is cleaned by rotating the housing and spraying cleaning water from the top of the housing toward the filter to remove the source of contamination. This minimizes the amount of cleaning water used, extends the filter replacement cycle, and allows for easy replacement of the filter when necessary, thereby enabling more effective maintenance and management of the filter.

[0036] Since the effects of the present invention described as described above are naturally exerted by the composition of the described content regardless of whether the inventor is aware of them, the aforementioned effects are merely a few effects based on the described content and should not be recognized as describing all effects perceived or actually existing by the inventor.

[0037] In addition, the effects of the present invention should be further understood from the overall description in the specification, and even if not explicitly stated, if an effect can be recognized as such by a person of ordinary knowledge in the technical field to which the described content belongs through the present specification, it should be considered as an effect described in the present specification. Brief explanation of the drawing

[0038] FIG. 1 is a perspective view showing a filtration device according to one embodiment of the present invention. FIG. 2 is another perspective view showing a filtration device according to one embodiment of the present invention. FIG. 3 is a perspective view showing the housing of a filtration device according to one embodiment of the present invention. FIG. 4 (a) and (b) are perspective views showing the housing of a filtration device according to one embodiment of the present invention. FIG. 5 is a perspective view showing a housing installed inside a housing in a filtration device according to one embodiment of the present invention. FIG. 6 is another perspective view showing a housing installed inside an enclosure in a filtration device according to one embodiment of the present invention. FIG. 7 is a perspective view showing the configuration of a filter in a filtration device according to one embodiment of the present invention. FIG. 8 is another perspective view showing the configuration of a filter in a filtration device according to one embodiment of the present invention. FIG. 9 is a perspective view showing a filter installed in a housing in a filtration device according to one embodiment of the present invention. FIG. 10 is a perspective view showing the configuration of a washing unit in a filtration device according to one embodiment of the present invention. FIG. 11 is another perspective view showing the configuration of a washing unit in a filtration device according to one embodiment of the present invention. FIG. 12 is a perspective view showing the configuration of a spray nozzle in a filtration device according to one embodiment of the present invention. FIG. 13 is a perspective view showing a wash treatment water recovery unit in a filtration device according to one embodiment of the present invention. FIG. 14 is another perspective view showing a wash treatment water recovery unit in a filtration device according to one embodiment of the present invention. Specific details for implementing the invention

[0039] The configuration and operation according to a preferred embodiment of the present invention will be described in detail below with reference to the attached drawings.

[0040] This is intended to provide a detailed explanation sufficient for a person skilled in the art to easily implement the contents of the present invention, and does not imply that the technical concept and scope of the present invention are limited thereby.

[0041] In addition, it should be noted that when assigning reference numerals to the components of each drawing, identical components are denoted by the same numeral whenever possible, even if they are shown in different drawings; furthermore, terms specifically defined in consideration of the structure and operation of the present invention may vary according to the intent or convention of the user or operator, and the definition of such terms should be determined based on the content throughout this specification.

[0042] First, the configuration of a microfiltration device for easy filter cleaning according to one embodiment of the present invention can be broadly divided into a housing into which wastewater flows in on one side and filtered wastewater is discharged on the other side, a housing into which a filter is installed and which is rotatably installed inside the housing, a filter section installed on the outer perimeter of the housing, a cleaning section for cleaning the filter section, and a cleaning water recovery section for recovering the cleaning water discharged during the filter cleaning process. Each component is examined in detail through the illustrated drawings as follows.

[0043] First, the hull (100) is,

[0044] As illustrated in FIGS. 1 to 3, wastewater can be introduced on one side and discharged through the other side in a filtered state. It can be configured in the shape of a roughly rectangular prism with a space of a predetermined size formed inside, and an inlet (110) can be formed on one side so that wastewater can be introduced, and an outlet (120) can be formed on the other side so that filtered wastewater can be discharged.

[0045] Here, the inlet section (110) and the outlet section (120) are configured in the form of pipes equipped with flanges and can be connected to other pipes to be connected to a desired point.

[0046] Preferably, the bottom surface of the housing (100) is configured to gradually narrow toward the bottom, so that the filtered wastewater naturally collects at the bottom surface of the housing (100), and the filtered wastewater can be discharged through a discharge section (120) located at the bottom on the other side of the housing (100).

[0047] The space of the enclosure (100) can accommodate a filter section (300), a washing section (400), and a washing treatment water recovery section (500), which will be described in detail later.

[0048] The upper surface of the housing (100) may be configured in a closed form, but may also be configured in a form that is opened and closed through a cover (130) while the upper surface is open.

[0049] In this way, when the upper surface of the housing (100) is configured to be opened and closed through the cover (130), the spray nozzle (430) of the cleaning unit (400), which is located on the upper side of the space of the housing (100), can be exposed to the outside by opening the cover (130), thereby facilitating the adjustment of the position and angle of the spray nozzle (430) as well as inspection and maintenance.

[0050] By providing a viewing window in the cover (130) as needed, the condition of the spray nozzle (430) can be visually inspected without opening the cover (130).

[0051] The housing (100) may be raised to a predetermined height from the installation surface by having legs installed on all four sides of its bottom surface, and at least one drain section may be installed on the bottom surface of the housing (100) so that sediment or treated water used for cleaning inside the housing (100) can be drained.

[0052] The housing (200) is,

[0053] It is installed in the space of the previously described enclosure (100), and the outer perimeter is installed in a manner that wraps around the filter section (300), which will be described in detail later.

[0054] The housing (200) may be configured to be approximately cylindrical with one side open and the other side closed, as illustrated in FIGS. 4 to 6, and may be installed in a position where the open side faces the inlet (110) of the housing (100) and the closed side faces the outlet (120).

[0055] Additionally, the central part (230) of the housing (200) has a plurality of installation holes (231) formed along the outer circumference, and a filter unit (300), which will be described in detail later, is installed in these installation holes (231), so that wastewater flowing in through the inlet part (110) of the enclosure (100) flows into the interior through one open side of the housing (200), passes through the filter unit (300) installed in the installation hole (231) and is filtered, then discharged to the outside of the housing (200) and then discharged through the discharge part (120) of the enclosure (100).

[0056] Meanwhile, the housing (200) may be installed in a fixed form when installed in the space of the enclosure (100), and may be configured to rotate in place for cleaning the filter part (300) installed along the outer circumference of the housing (200) as in the embodiment of the present invention.

[0057] Accordingly, as the housing (200) rotates, the filter unit (300) installed on the outer circumference of the housing (200) comes close to the spray nozzle (430) of the cleaning unit (400) located vertically upward from the axis center of the housing (200), and thus the cleaning of the filter unit (300) is performed.

[0058] Specifically, the housing (200) has a first flange (210) formed on one side in the longitudinal direction with an open center, and a second flange (220) formed on the other side in the longitudinal direction with a closed center. In the central part (230) between the first flange (210) and the second flange (220), multiple frames are installed at regular intervals along the circumferential direction of the first flange (210) and the second flange (220), and installation holes (231) are formed between the frames. A filter part (300), which will be described in detail later, can be installed in each of these installation holes (231).

[0059] Meanwhile, in order for the housing (200) to rotate in place within the enclosure (100), the first flange (210) and the second flange (220) of the housing (200) may be installed so as to be rotatable through the first bulkhead (150) and the second bulkhead (160) which are erected and installed on both sides facing each other in the space of the enclosure (100).

[0060] That is, a through hole (151) is formed in the center of the first partition (150), and the first flange (210) of the housing (200) can be rotatably fitted and installed through this through hole (151), and the second partition (160) can also be rotatably fitted and installed through this through hole (161), and the second flange (220) of the housing (200) can be rotatably fitted and installed through this through hole (161).

[0061] Here, a bearing may be installed around the inner circumference of the through hole (151)(161) to assist in the rotation of the first and second flanges (210)(220) that pass through the through hole (151)(161).

[0062] And a belt (260) is installed wrapped around the outer circumference of the second flange (220), and this belt (260) is connected to a pulley (250) located inside the second bulkhead (160), and the pulley (250) is connected to a drive motor (240) located outside the housing (100), so that the housing (200) can rotate in place by the operation of the pulley (250) and the belt (260) according to the drive of the drive motor (240).

[0063] In addition, a tension control roller may be installed adjacent to the pulley (250) on the inside of the second partition (160), and the tension of the belt (260) may be controlled through this tension control roller.

[0064] Meanwhile, as a means to assist the rotation of the housing (200), brackets (152) (162) are installed on both sides or all sides facing the through hole (151) (161) outside the first and second partitions (150) (160), and rollers (153) (163) are installed at the ends of such brackets (152) (162) and configured so as to be in contact with the inner circumference of the first and second flanges (210) (220).

[0065] Additionally, as another means to assist the rotation of the housing (200), an annular guide ring (211) (221) is formed protrudingly at a point spaced inward toward the center from the ends of the first flange (210) and the second flange (220) of the housing (200), and support rollers (154) (164) capable of rolling by contacting the front of the annular guide ring (211) (221) may be installed on the inner surfaces of the first partition (150) and the second partition (160), respectively, and the support rollers (154) (164) may be formed in a pair facing each other along the outer circumference of the housing (200) or in four facing directions.

[0066] The filter section (300) is,

[0067] It is installed in the installation hole (231) of the previously described housing (200) and serves to filter wastewater that flows into the interior of the housing (200) and is discharged to the outside of the housing (200).

[0068] The filter unit (300) may be configured such that a filter member (320) is directly installed in the installation hole (231) so that wastewater passing through the installation hole (231) is filtered by the filter member (320). Preferably, the filter unit (300) may be composed of a filter frame (310) installed in each of the installation holes (231) of the housing (200) as illustrated in FIGS. 7 and 8, and a filter member (320) installed in a plurality of through holes (311) formed on the surface of the filter frame (310).

[0069] Here, the filter frame (310) does not need to be fixed in any one shape, for example, the lower side of the filter frame (310) is connected directly or indirectly through a fastening means so that the outer edge of the installation hole (231) matches the outer edge of the installation hole (231), so that wastewater flowing out through the installation hole (231) enters the interior of the filter frame (310) and passes through the filter member (320) installed in the through hole (311) on the surface and flows out, and the upper side of the filter frame (310) may be configured as a thin, flat plate or a curved plate, and at least one through hole (311) may be formed on the surface, and a filter member (320) may be installed in such through hole (311).

[0070] In another example, the lower outer edge of the filter frame (310) is connected to the outer edge of the installation hole (231), and the upper edge may be composed of various polygons such as a semicircle or arc, as well as a triangle, square, pentagon, hexagon, or trapezoid.

[0071] Here, as shown in FIGS. 7 and 8, if the upper side of the filter frame (310) is configured in a trapezoidal shape, through holes (311) can be formed on the inclined surfaces on both sides and on the upper surface, and as filter members (320) are installed in each through hole (311), when the housing (200) is viewed from the side as a whole, the filter part (300) becomes a gear shape or a star shape as shown in FIG. 9, and the surface area of ​​the filter member (320) can be used as widely as possible.

[0072] Additionally, when the housing (200) is rotated and cleaning water is sprayed through the spray nozzle (430) of the cleaning unit (400) located vertically above the axis center of the housing (200), the cleaning water of the spray nozzle (430) can effectively clean the filter member (320) located on the inclined surface and upper surface of the filter frame (310).

[0073] Meanwhile, the lower side of the filter frame (310) is configured in an open shape so that wastewater flows into the interior through the lower side of the filter frame (310) from the installation hole of the housing (200) and then passes through the filter member (320) provided in the through hole (311) on the upper side of the filter frame (310) and is discharged. At this time, there is no major problem if the wastewater is organic wastewater, but if it is inorganic wastewater such as, for example, iron ore plant wastewater or mine wastewater, the filter member (320) installed in the through hole (311) may easily become clogged or damaged due to inorganic matter.

[0074] Accordingly, an auxiliary filter member (330) may be further included on the lower side of the filter frame (310), and when the auxiliary filter member (330) is installed on the lower side of the filter frame (310) in this manner, wastewater flowing into the lower side of the filter frame (310) through the installation hole (231) of the housing (200) is first filtered by the auxiliary filter member (330) to remove large particles of contaminants first, and then passes through the filter member (320) provided in the through hole (311) of the filter frame (310) to be secondarily filtered, thereby removing small particles of contaminants as well.

[0075] Here, the filter member (320) may be composed of a mesh made of synthetic resin or metal having pores of approximately 10 microns to approximately 20 microns, and the material of the mesh may be, for example, polyester or SUS316.

[0076] And the auxiliary filter member (330) may be composed of a mesh having a pore size of approximately 100 microns, and this may also be composed of a mesh made of synthetic resin or metal, and specifically, the material of the mesh may be composed of polyester or SUS316.

[0077] The washing unit (400) is,

[0078] It serves to remove contaminants from the filter section (300) installed along the outer circumference of the housing (200) and positioned vertically above the axis center of the housing (200).

[0079] The washing unit (400) may be composed of a washing water pump (410) that supplies washing water, as exemplified in FIGS. 10 to 12, a washing water transfer pipe (420) that moves the washing water supplied through the washing water pump (410), and a plurality of spray nozzles (430) installed along the washing water transfer pipe (420) located vertically above the axis center of the housing (200).

[0080] Here, a washing water pump (410) is installed on one side of the housing (100), and the washing water pump (410) draws up filtered wastewater that is collected at the bottom of the housing (100) before being discharged to the discharge section (120) of the housing (100) after being filtered through the filter section (300). The filtered wastewater drawn up by the washing water pump (410) moves through the washing water transfer pipe (420) and is then sprayed through a plurality of spray nozzles (430) spaced apart along the longitudinal direction of one or at least one pair of spaced-apart washing water transfer pipes (420) arranged in the longitudinal direction of the housing (200) at the upper part of the axis center of the housing (200).

[0081] Here, the spray nozzle (430) can be configured so that the spray angle spreads downward, and can be rotatably installed on the wash water transfer pipe (420) to adjust the spray direction to a desired direction.

[0082] Additionally, when cleaning water is sprayed from the spray nozzle (430) according to the operation of the cleaning unit (400), the cleaning water is sprayed from vertically upward to downward from the axis center of the housing (200), so that the filter frame (310) and filter member (320) located vertically above the axis center of the housing (200) during the rotation process of the housing (200) can be cleaned.

[0083] Meanwhile, as explained above, if the wastewater flowing into the interior of the housing (200) and moving to the installation hole (231) is organic waste, the filter unit (300) can effectively filter the wastewater even if the filter member (320) is provided only on the upper side of the filter frame (310), and the filter unit (300) can be effectively maintained and managed by washing the filter member (320) provided on the upper side of the filter unit (300) through the washing unit (400).

[0084] However, if the wastewater is inorganic waste, an auxiliary filter member (330) may also be installed on the lower side of the filter frame (310) to prevent clogging and damage to the filter member (320) provided on the upper side of the filter frame (310), and in this case, the auxiliary filter member (330) installed on the lower side of the filter frame (310) cannot be cleaned by the spray nozzle (430) located on the upper side of the axis center of the housing (200).

[0085] Accordingly, as shown in FIG. 12, the cleaning unit (400) is provided with an auxiliary transfer pipe (440) branched from the cleaning water transfer pipe (420) and is introduced into the interior through one open side of the housing (200) and arranged along the longitudinal direction on the inner surface of the housing (200), and a plurality of auxiliary spray nozzles (450) are installed along the longitudinal direction on the auxiliary transfer pipe (440), so that the auxiliary filter member (330) installed on the lower side of the filter frame (310) can be cleaned through the cleaning water sprayed from these auxiliary spray nozzles (450).

[0086] Here, the spray angle of the auxiliary spray nozzle (450) can be configured to spread laterally toward the auxiliary filter member (300), and can be rotatably installed on the auxiliary transfer pipe (400) to adjust the spray direction to a desired direction.

[0087] Meanwhile, although the operation of the cleaning unit (400) may be always active, it is preferable that it be operated only when cleaning is required because the contamination of the filter unit (300) has exceeded a certain level. For example, by installing a water level detection means such as an ultrasonic level sensor inside the housing (200), when wastewater flowing into the housing (200) is filtered through the filter unit (300) and discharged to the outside of the housing (200), if the filter unit (300) becomes contaminated and clogged, the water level of the wastewater flowing into the housing (200) gradually rises. In this case, the water level of the wastewater inside the housing (200) is detected through the water level detection means, and when it reaches a set water level, the cleaning water pump (410) is automatically driven to clean the filter unit (300). Additionally, the cleaning unit (400) can be driven, and the driving motor (240) of the housing (200) is also driven to rotate the housing (200).

[0088] Here, a control unit (600) that receives a signal from a water level detection means and controls the operation of a washing water pump (410) and a driving motor (240) may be installed on one side of the outside of the housing (100), and may be connected to a manager's terminal via a wireless transceiver module to provide guidance on the washing progress time or washing status of the filter unit (300), and if necessary, the washing of the filter unit (300) may be carried out through the manager's terminal according to the water level of wastewater flowing into the housing (200) or regardless of the water level.

[0089] The wash treatment water recovery unit (500) is,

[0090] The washing treatment water generated while the filter unit (300) is being washed through the washing unit (400) described above is collected separately and discharged to the outside so that it does not mix with the wastewater flowing into the housing (200).

[0091] The configuration of the washing treatment water recovery unit (500) may be configured such that, for example as shown in FIG. 13 and FIG. 14, it is installed along the longitudinal direction of the housing (200) above the axial center inside the housing (200) and is configured in a channel shape that narrows toward the bottom to accommodate washing treatment water generated while the filter unit (300) is being washed, and a discharge pipe (520) connected to one side of the receiving member (510) and extending out of the housing (100) at the other side.

[0092] Here, the discharge pipe (520) may be installed in a tilted shape together with the receiving member (510), so that the washing treatment water received in the receiving member (510) naturally moves along the discharge pipe (520) and is discharged to the outside.

[0093] Additionally, the discharge pipe (520) that is drawn out to the outside of the enclosure (100) can be divided at one point as in FIG. 1 and connected to each other through an overflow box (530), and by configuring the overflow box (530) to communicate with an overflow hole (140) formed on one surface of the enclosure (100), the wastewater flowing into the enclosure (100) can be overflowed through the overflow box (530) and the discharge pipe (520) when the wastewater flowing into the enclosure (100) fills the space of the enclosure (100) more than necessary.

[0094] In the filtration device of the present invention configured as described above, wastewater flowing in through the inlet (110) of the enclosure (100) moves into the interior of the housing (200), then passes through a filter section (300) installed along the outer circumference of the housing (200) to be filtered, and then is discharged to the outside through the discharge section (120) of the enclosure (100).

[0095] And when the filter unit (300) becomes contaminated and clogged during the process of filtration of wastewater in this manner, the water level of the wastewater flowing into the housing (200) rises. When the water level rises, the washing water pump (410) is driven by the control unit (600) that receives a signal from the water level detection means, and the filter unit (300) is washed by the washing water. At the same time, the control unit (600) drives the driving motor (240) to rotate the housing (200), thereby allowing the filter unit (300) to be washed evenly throughout. The washing water generated while the filter unit (300) is being washed can be recovered through the washing water recovery unit (500) and discharged to the outside.

[0096] In addition, since the filtration device can be manufactured in a small, micro-sized form, production is facilitated, and it can be easily installed and used in small-scale water treatment facilities. Furthermore, by maximizing the filter replacement cycle, maintenance costs can be reduced.

[0097] As described above, the detailed description of the present invention has explained specific embodiments, but it is understood that various modifications are possible within the scope of the described content. Therefore, the scope of the described content does not need to be limited to the described embodiments, but should be defined by the claims set forth below as well as equivalents thereof. Explanation of the symbols

[0098] 100 : Hull 110 : Inlet 120 : Discharge section 130 : Cover 140 : Overflow hole 150 : First bulkhead 151, 161: Through hole 152, 162: Bracket 153, 163: Rollers 154, 164: Support Rollers 160 : Second bulkhead 200 : Housing 210: 1st flange 211, 221: Guide ring 220 : 2nd flange 230 : Center 231 : Installer 240 : Drive motor 250: Pulley 260: Belt 300 : Filter section 310 : Filter frame 311 : Through hole 320 : Filter element 330 : Auxiliary filter element 400 : Washing section 410: Wash water pump 420: Wash water transfer pipe 430: Spray nozzle 440: Auxiliary transfer pipe 450: Auxiliary spray nozzle 500: Washed water recovery unit 510 : Receiving member 520 : Discharge pipe 530 : Overflow box 600 : Control unit

Claims

Claim 1 A housing (100) having an inlet (110) formed on one side to allow wastewater to flow in, and an outlet (120) formed on the other side to allow filtered wastewater to be discharged, with a space of a predetermined size formed inside; a cylindrical housing (200) installed to be rotatable in place within the space of the housing (100), having a first flange (210) formed at the end with the center open on one side and a second flange (220) formed at the end with the center closed on the other side, and a plurality of installation holes (231) formed at regular intervals along the outer circumference in the central part (230) between the first and second flanges (210) (220); a filter unit (300) installed in each of the installation holes (231) and filtering wastewater that flows into the interior of the housing (200) and is discharged through the installation holes (231); a washing water pump (410), and the A washing unit (400) comprising a washing water transfer pipe (420) arranged along the longitudinal direction of the housing (200) at the upper axial center of the housing (200) and a plurality of spray nozzles (430) installed at regular intervals on the washing water transfer pipe (420) to spray washing water onto a filter unit (300) located at the upper axial center of the housing (200); The present invention includes a washing treatment water recovery unit (500) which is installed inside the housing (200) and comprises a receiving member (510) that receives washing treatment water generated during the process of washing the filter unit (300) by the washing water, and a discharge pipe (520) which is connected to the receiving member (510) at one end and extended to the outside of the housing (100) at the other end to discharge the washing treatment water received in the receiving member (510) to the outside; and a first partition wall (150) and a second partition wall (160) are formed on both sides facing each other in the space of the housing (100), with through holes (151) (161) formed in the center, and the first flange (210) of the housing (200) is installed by being rotatably fitted directly into the through hole (151) of the first partition wall (150).The second flange (220) of the housing (200) is installed by being rotatably fitted directly into the through hole (161) of the second partition (160), and the first flange (210) and the second flange (200) are installed rotatably with the help of a bearing installed on the inner circumference of the through hole (151)(161), and brackets (152)(162) are installed on the first and second partitions (150)(160) on all sides centered on the through hole (151)(161), and rollers (153)(163) are respectively installed at the ends of the brackets (152)(162) so as to be in contact with the inner circumference of the first and second flanges (210)(220) of the housing (200) to assist in the rotation of the housing (200), and the The outer circumference of the second flange (220) is connected to a belt (260) that rotates according to the operation of a pulley (250) driven by a drive motor (240), and the belt (260) is configured so that its tension is adjusted through a tension adjustment roller, and an annular guide ring (211) (221) is formed protrudingly at a point spaced inward from the ends of the first and second flanges (210) (220), respectively, and a support roller (154) (164) is installed on the inner surface of the first and second partition walls (150) (160) so as to assist the rotation of the housing (200) by making contact with the front surface of the guide ring (211) (221) and performing a rolling action, and the filter part (300) comprises a filter frame (310) in which the lower part open in the installation hole (231) is detachably installed, and the filter frame (310) It is configured to consist of a filter member (320) installed in a plurality of through holes (311) formed in the upper part, wherein an auxiliary filter member (330) having a larger pore than the filter member (320) is installed in the open lower part of the filter frame (310), so that large particles of pollutants in the wastewater are filtered first through the auxiliary filter member (330) and small particles of pollutants are filtered secondarily through the filter member (320), and the washing water transfer pipe (420) is arranged along the axial direction of the housing (200) outside the housing (200).A micro filtration device for easy filter cleaning, characterized in that it is composed of at least one pair of spray nozzles (430) that are horizontally spaced apart from each other and are installed along the longitudinal direction of the washing water transfer pipe (420) to clean the filter member (320), and are rotatably installed from the washing water transfer pipe (420) so that the spray angle can be freely adjusted, an auxiliary transfer pipe (440) is branched from the washing water transfer pipe (420), and the auxiliary transfer pipe (440) is introduced into the interior of the housing (200) to face the filter part (300) in the center and is arranged along the axial direction of the housing (200), and auxiliary spray nozzles (450) that are installed along the longitudinal direction of the auxiliary transfer pipe (440) to clean the auxiliary filter member (330) are rotatably installed from the auxiliary transfer pipe (440) so that the spray angle can be freely adjusted. Claim 2 A microfiltration device that facilitates easy filter cleaning, characterized in that, in claim 1, the upper surface of the housing (100) is configured to be opened and closed by a cover (130) while in an open state. Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A microfiltration device that facilitates easy filter cleaning, characterized in that, in claim 1, the upper part of the filter frame (310) is formed in any one of the shapes of a semicircle, an arc, a triangle, a square, a pentagon, a hexagon, or a trapezoid. Claim 7 A micro filtration device that facilitates easy filter cleaning, characterized in that, in claim 6, the upper part of the filter frame (310) is configured in a trapezoidal shape, and the filter member (320) is installed in each of the through holes (311) formed on the upper surface and on the inclined surfaces on both sides. Claim 8 delete Claim 9 A microfiltration device that is easy to clean, characterized in that, in claim 1, the filter member (320) is composed of a mesh made of polyester material or a mesh made of SUS316 material. Claim 10 A microfiltration device that facilitates easy filter cleaning, characterized in that, in claim 1, the auxiliary filter member (330) is composed of a mesh made of polyester material or a mesh made of SUS316 material, and is configured to have pores larger in size than the pores of the filter member (320). Claim 11 delete Claim 12 delete Claim 13 A microfiltration device that facilitates easy filter cleaning, characterized in that, in claim 1, the auxiliary spray nozzle (450) is rotatably installed from the auxiliary transfer pipe (440) and configured so that the spray direction can be adjusted. Claim 14 A microfiltration device that facilitates easy filter cleaning, characterized in that, in claim 1, a discharge pipe (520) drawn out to the outside of the housing (100) is divided at one point and connected to each other through an overflow box (530), and an overflow hole (140) formed on the surface of the housing (100) communicates with the overflow box (530). Claim 15 A micro filtration device for easy filter cleaning according to claim 1, wherein an ultrasonic level sensor is installed inside the housing (200) to detect the water level filling the inside of the housing (200), and when a water level above a set level is detected through the ultrasonic level sensor, the control unit (600) drives the driving motor (240) of the housing (200) to rotate the housing (200) while simultaneously driving the cleaning water pump (410) of the cleaning unit (400) so that the filter unit (300) can be cleaned.

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