Filter module for water-purifying device using gravity and water-purifying device including the same

Abstract

A filter module for a gravity-type water purification device is provided. A filter module for a gravity-type water purification device according to one embodiment of the present invention comprises: a filter section including a plate-shaped filtration member having a predetermined area and a plurality of flat-plate filters arranged parallel along one direction such that one surface of the filtration member faces each other at a distance; a filtered water collection section for collecting filtered water produced from each of the plurality of flat-plate filters; and a case section arranged to surround the front, rear, and top surfaces of the filter section while having both sides of the filter section open, and includes a plurality of through holes through which raw water passes so as to smoothly supply raw water toward the filter section, and fixes both ends of a fastening bar that fastens the plurality of flat-plate filters. The case section comprises: a front plate having a plurality of first through holes formed through it and covering the front surface of the filter section; a rear plate having a plurality of second through holes formed through it and covering the rear surface of the filter section; and a top plate connecting the front plate and the rear plate and covering the top surface of the filter section. and a pair of extension plates extending outward from each end of the front plate and rear plate and in contact with the bottom surface of the storage tank; wherein the case portion can perform a first role of covering the filter portion to protect the plurality of flat-plate filters, a second role of increasing the total weight of the filter module for the gravity-type water purification device so that the filter module for the gravity-type water purification device can sink in the raw water by its own weight, and a third role of separating the filter member by a certain height from the bottom surface of the storage tank in which a certain amount of raw water is stored.

Description

Technology Field

[0001] The present invention relates to a filter module for a gravity-type water purification device and a gravity-type water purification device including the same. Background Technology

[0002] Conventional water purifiers produce clean water by passing raw water through a filter to remove impurities. These purifiers use electrical energy to provide a constant water pressure to the raw water.

[0003] Accordingly, conventional water purifiers require a pump facility to apply a constant water pressure to the raw water, and must also be equipped with an electrical facility to supply electricity to the pump facility.

[0004] As a result, there are limitations in producing clean water in poor environments where facilities such as pumps or electrical systems are unavailable. The problem to be solved

[0005] The present invention has been devised in consideration of the above points, and aims to provide a filter module for a gravity-type water purification device and a gravity-type water purification device including the same, which can easily produce filtered water using gravity while improving maintainability. means of solving the problem

[0006] To achieve the above objectives, the present invention comprises: a filter section including a plate-shaped filter member having a predetermined area and a plurality of flat-plate filters arranged parallel along one direction such that one surface of the filter member faces each other at a distance; a filtered water collection section for collecting filtered water produced from each of the plurality of flat-plate filters; and a case section arranged to surround the front, rear, and top surfaces of the filter section with both sides of the filter section open, and includes a plurality of through holes through which raw water passes to smoothly supply raw water toward the filter section, and fixes both ends of a fastening bar that fastens the plurality of flat-plate filters; wherein the case section comprises: a front plate covering the front surface of the filter section with a plurality of first through holes formed through it; a rear plate covering the rear surface of the filter section with a plurality of second through holes formed through it; and a top plate covering the top surface of the filter section while connecting the front plate and the rear plate. The present invention provides a filter module for a gravity water purification device comprising: a pair of extension plates extending outward from each end of the front plate and the rear plate and contacting the bottom surface of the storage tank; wherein the case portion performs a first role of covering the filter portion to protect the plurality of flat-plate filters, a second role of increasing the total weight of the filter module for a gravity water purification device so that the filter module for a gravity water purification device may sink in raw water by its own weight, and a third role of separating the filtration member by a certain height from the bottom surface of the storage tank in which a certain amount of raw water is stored.

[0007] delete

[0008] delete

[0009] The above fastening bar can have both ends fixed to the front plate and the rear plate, respectively, so that the filter member is positioned on the upper side above the pair of extension plates when the plurality of flat-plate filters are fastened.

[0010] Additionally, the flat plate filter may include: a filtration member formed as a plate having a predetermined area; a support frame coupled to the edge side of the filtration member to support the filtration member, and having a flow path formed therein for filtered water produced through the filtration member to flow; and a connecting member coupled to one side of the support frame and coupled to the fastening bar.

[0011] Additionally, the connecting member may include a first part that surrounds the support frame and a second part extending from the first part, wherein the second part may include a body having a wider width than the first part and having a through hole formed therethrough so that the fastening bar can pass through, a hollow protrusion formed protruding from a first surface of the body while defining the edge of the through hole, and a hollow groove formed inward on the second surface of the body opposite to the first surface while surrounding the edge of the through hole.

[0012] In such a case, the through hole may be formed in the body to penetrate both the protrusion and the groove.

[0013] Through this, two flat filters arranged parallel to each other can be fixed by inserting the protrusion formed on one flat filter into the groove formed on the other flat filter as the fastening bar passes through the through hole formed on each of the two flat filters.

[0014] In addition, the above case part may be made of stainless steel.

[0015] Meanwhile, the present invention provides a gravity-type water purification device comprising: a storage tank having an internal space in which raw water is stored; and a filter module for the gravity-type water purification device described above disposed in the internal space to filter out foreign substances contained in the raw water, wherein the raw water is sucked toward the flat plate filter side by gravity to filter out foreign substances and produce filtered water. Effects of the invention

[0016] According to the present invention, by preventing damage to the filtration element for producing filtered water through the case portion and preventing re-contamination of the filtration element by foreign substances, clean filtered water can be obtained using gravity even under poor conditions where there is no power supply such as electricity.

[0017] In addition, according to the present invention, maintainability can be improved by allowing the filter module to be easily assembled and disassembled. Brief explanation of the drawing

[0018] FIG. 1 is a drawing showing a filter module for a gravity-type water purification device according to one embodiment of the present invention. Figure 2 is an exploded view of Figure 1, FIG. 3 is a cross-sectional view in the AA direction of FIG. 1, FIG. 4 is a cross-sectional view in the BB direction of FIG. 1, FIG. 5 is a diagram showing the coupling relationship between two connecting members in a filter module for a gravity-type water purification device according to one embodiment of the present invention. FIG. 6 is a drawing showing one form of a flat plate filter that can be applied to a filter module for a gravity-type water purification device according to one embodiment of the present invention. Fig. 7 is a separated view of Fig. 6, FIG. 8 is a cross-sectional view of a frame that can be applied to FIG. 6, FIG. 9 is a drawing showing a connecting member that can be applied to FIG. 6. FIG. 10 is a drawing showing the connection relationship between the connecting member and the support frame in FIG. 6, and, FIG. 11 is a schematic diagram showing a gravity water purification device to which a filter module for a gravity water purification device according to one embodiment of the present invention is applied. Specific details for implementing the invention

[0019] Hereinafter, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. In the drawings, parts unrelated to the explanation have been omitted to clearly explain the present invention, and the same reference numerals are assigned to identical or similar components throughout the specification.

[0020] In this specification, the front and rear surfaces may refer to surfaces perpendicular to the x-axis in FIG. 1, the side surface may refer to surfaces perpendicular to the y-axis, and the top and bottom surfaces may refer to surfaces perpendicular to the z-axis. Additionally, the width direction may refer to a direction parallel to the x-axis.

[0021] A filter module (100) for a gravity-type water purification device according to one embodiment of the present invention can produce filtered water by removing foreign substances from raw water through water pressure caused by gravity or potential energy while submerged in raw water.

[0022] In addition, a filter module (100) for a gravity-type water purification device according to one embodiment of the present invention can be placed in a storage tank (200) where raw water is stored, and can be placed in a state where it sinks to the bottom surface of the storage tank (200) by its own weight without using a separate fixing member.

[0023] In addition, in a filter module (100) for a gravity-type water purification device according to one embodiment of the present invention, a filter member (111) may be arranged at a certain distance from the bottom surface of a storage tank (200).

[0024] That is, when the amount of raw water stored in the storage tank (200) is sufficient, the filter module (100) for a gravity-type water purification device according to one embodiment of the present invention can be placed in the storage tank (200) in a state where it is completely submerged in the raw water, and even when the amount of raw water stored in the storage tank (200) is small, the filter module (100) for a gravity-type water purification device according to one embodiment of the present invention can maintain a state of being settled on the bottom surface of the storage tank (200) to maximize the amount of raw water in contact with the filtration member (111).

[0025] To this end, a filter module (100) for a gravity water purification device according to one embodiment of the present invention includes a filter section, a filtered water collection section (120), and a case section (130) as shown in FIGS. 1 to 4.

[0026] The above filter unit can produce filtered water by removing foreign substances from raw water.

[0027] Such a filter section can be configured to increase the contact area with raw water while also increasing the production volume of filtered water.

[0028] To this end, the filter section may include a plurality of flat-plate filters (110) arranged parallel along one direction as shown in FIG. 2, and each of the plurality of flat-plate filters (110) may include a plate-shaped filter member (111) having a predetermined area.

[0029] In this case, the plurality of flat filters (110) may be arranged parallel along one direction such that one side of the filter member (111) faces each other at a distance, as shown in FIGS. 3 and 4, and the plurality of flat filters (110) may be integrated through a fastening bar (140).

[0030] Accordingly, even if the plurality of flat plate filters (110) are arranged in parallel along one direction, the filtration member (111) provided in each flat plate filter (110) can come into smooth contact with raw water, and each filtration member (111) can filter foreign substances from the raw water to produce filtered water.

[0031] Through this, the filter module (100) for a gravity water purification device according to one embodiment of the present invention can produce filtered water from each of the plurality of flat plate filters (110), thereby increasing the filtered water production yield.

[0032] To this end, each of the plurality of flat plate filters (110) may include a filtration member (111) formed as a plate having a predetermined area as shown in FIGS. 6 and 7, a support frame coupled to the edge side of the filtration member (111) to support the filtration member (111), a connecting member (113, 113', 113") coupled to one side of the support frame, and a receiving port (114) for discharging filtered water produced through the filtration member (111) to the outside.

[0033] The above filter member (111) can filter foreign substances contained in raw water. As shown in the enlarged view of FIG. 7, such a filter member (111) may include a pair of nanofiber webs (111c) attached to both sides of a support (111a) via an adhesive layer (111b).

[0034] In this case, the nanofiber web (111c) may serve to filter out foreign substances contained in the raw water, and the support (111a) may serve as a passageway that supports the nanofiber web (111c) and moves the filtered water produced by the nanofiber web (111c).

[0035] For example, the support (111a) may be a porous substrate so as to serve as a passageway for the filtered water produced by the nanofiber web (111c). As a non-limiting example, the support (111a) may be any one of a woven fabric, a knitted fabric, or a nonwoven fabric.

[0036] Additionally, the nanofiber web (111c) may be formed through nanofibers, and the nanofibers may include a fiber-forming component comprising polyacrylonitrile (PAN) and / or polyvinylidene fluoride (PVDF) and an emulsifying agent that improves the miscibility of the fiber-forming component.

[0037] However, the above filter member (111) is not limited to this, and any known filter member used for water treatment can be used as long as it is in the form of a plate having a predetermined area.

[0038] The support frame can support the edge of the filter member (111) and can maintain the filter member (111) in a plate shape.

[0039] Such a support frame may be made of a single member to support the edge of the filter member (111), but as shown in FIG. 7, it may include a plurality of frames (112) that are coupled to the edge of the filter member (111).

[0040] For example, each of the plurality of frames (112) may be positioned on the edge side of the filter member (111) such that one end contacts the other end as shown in FIG. 10, and two adjacent frames (112) may be fixed through the connecting member (113, 113', 113") while wrapping around the edge of the filter member (111).

[0041] At this time, each frame (112) constituting the support frame may be provided in a roughly 'C' shape with one side open, as shown in FIG. 8.

[0042] Accordingly, the support frame may include a channel (112c) on the inside that can move filtered water produced through the filter member (111).

[0043] As a result, the support frame can perform the role of supporting the filter member (111) and also serve as a flow path for moving the filtered water produced by the filter member (111) toward the receiving port (114).

[0044] Specifically, the plurality of frames (112) may include a plate-shaped first plate (112a) as shown in FIG. 8 and a pair of second plates (112b) extending a certain length from both ends of the first plate (112a), and the flow path (112c) may be defined by a pair of second plates (112b) facing each other and the first plate (112a).

[0045] In such a case, a restraining member (112d) that limits the insertion depth of the filter member (111) may be provided on the opposing surfaces of a pair of second plates (112b) facing each other. Through this, even if the rim of the filter member (111) is fastened to the frame (112), the insertion depth of the filter member (111) can be limited through the restraining member (112d), and the flow path (112c) formed inside the frame (112) can be maintained as a predetermined space.

[0046] The above connecting member (113, 113', 113") can be connected to the corner side of the support frame. Such connecting member (113, 113', 113") may be provided in multiple numbers and, as described above, can be connected to the corner side of the support frame to fix the ends of two adjacent frames (112).

[0047] To this end, the connecting member (113, 113', 113") may include a first portion (113a) that wraps around the corner of the support frame (see FIG. 9 and FIG. 10).

[0048] At this time, some of the connecting members (113', 113") among the plurality of connecting members (113, 113', 113") can function as fasteners that are coupled with the fastening bar (140) while fixing the ends of two adjacent frames (112).

[0049] To this end, the connecting member (113', 113") may include a first part (113a) that wraps around the corner of the support frame as shown in FIG. 9 and FIG. 10, and a second part (113b) that extends from the first part (113a) and has a through hole (113d) formed therein.

[0050] In this case, the first part (113a) may be formed with one side open so as to wrap around the support frame, and the second part (113b) may be extended a certain length from the first part (113a).

[0051] Accordingly, among the plurality of frames (112) constituting the support frame, two adjacent frames (112) can be fixed by inserting their end sides into the first part (113a), and a plurality of flat filters (110) arranged parallel to each other can be joined together through a fastening bar (140) passing through the through hole (113d) of the second part (113b) as shown in FIG. 5.

[0052] Through this, multiple flat filters (110) arranged parallel to each other can be integrated with each other through a fastening bar (140) passing through a through hole (113d) of the second part (113b).

[0053] At this time, the second part (113b) can serve as a fastening member to which the fastening bar (140) is fastened, and also as a spacing member to maintain the spacing between the filtration members (111) provided on each of the two flat plate filters (110) arranged parallel to each other.

[0054] In addition, the second part (113b) can also serve as a connecting member that combines two flat filters (110) arranged parallel to each other.

[0055] To this end, the second part (113b) may include a body (113c) having a wider width than the first part (113a) as shown in FIGS. 3 to 5 and having a through hole (113d) formed through it so that the fastening bar (140) can pass through, a hollow protrusion (113e) formed protruding from the first surface of the body (113c) while defining the edge of the through hole (113d), and a hollow groove (113e) formed in the second surface of the body opposite to the first surface while surrounding the edge of the through hole (113d).

[0056] In this case, the through hole (113d) may be formed in the body (113c) to penetrate both the protrusion (113e) and the groove (113e).

[0057] Accordingly, the fastening bar (140) can pass through both through holes (113d) formed in each of the two flat filters (110) arranged parallel to each other, and a protrusion (113e) formed in one of the two flat filters (110) arranged parallel to each other can be inserted into a groove (113e) formed in the other flat filter (110).

[0058] That is, the plurality of flat filters (110) can be fixed through a primary connection via the fastening bar (140) and a secondary connection via the mutual connection of the protrusion (113e) and the groove (113e).

[0059] Accordingly, when a plurality of flat plate filters (110) arranged parallel to each other are fixed to each other through a fastening bar (140), even if each flat plate filter (110) is completely in close contact, two filtration members (111) arranged so that one side faces each other can be maintained at a certain distance from each other through the second part (113b).

[0060] As a result, each of the plurality of flat-plate filters (110) can produce filtered water by allowing both sides of the filtration member (111) to come into contact with the raw water.

[0061] In addition, when multiple flat filters (110) arranged parallel to each other are brought into close contact, a protrusion (113e) formed on one of the two flat filters (110) arranged parallel to each other is inserted into a groove (113e) formed on the other flat filter (110) and joined together, thereby further increasing the joining force.

[0062] Meanwhile, at least one of the above connecting members (113, 113', 113") may include a receiving port (114) for discharging filtered water moving along the above flow path (112c) to the outside.

[0063] For example, as shown in FIG. 10, the receiving port (114) may be provided in the first part (113a) of the connecting member (113) so as to be in communication with the flow path (112c).

[0064] However, the formation location of the above-mentioned receiving port (114) is not limited to this, and it can be formed to be located at various positions depending on the design conditions as long as it is in communication with the above-mentioned flow path (112c).

[0065] As shown in FIG. 2, the receiving port (114) can be connected to the filtered water collection unit (120) via the first connecting pipe (123). Accordingly, the filtered water produced from each of the plurality of flat plate filters (110) can be moved to the filtered water collection unit (120) through the receiving port (114).

[0066] The above filtered water collection unit (120) can collect filtered water produced from each flat plate filter (110). That is, the above filtered water collection unit (120) can be connected to a receiving port (114) formed in each of the plurality of flat plate filters (110).

[0067] Through this, the filtered water collection unit (120) can collect filtered water produced individually from each flat plate filter (110) into one space.

[0068] To this end, the filtered water collection unit (120) may include a plurality of inlets (121) each connected to the receiving port (114) via a first connecting pipe (123) as shown in FIG. 1, and an outlet (122) for discharging the filtered water introduced through the plurality of inlets (121) to the outside.

[0069] Accordingly, the filtered water produced individually from each of the plurality of flat-plate filters (110) can be integrated through the filtered water collection unit (120) and then discharged through the outlet (122).

[0070] The above case part (130) can smoothly allow raw water for producing filtered water to flow into the filter part, while protecting the filter part to prevent damage to the filter member (111) of the flat plate filter (110).

[0071] Additionally, the case portion (130) can fix both ends of the fastening bar (140) that fastens the plurality of flat plate filters (110). That is, the fastening bar (140) can have both ends fixed to the fastening holes (138) formed in the case portion (130) while fastening the plurality of flat plate filters (110) arranged parallel to each other.

[0072] Accordingly, the plurality of flat filters (110) can be fixed to the case part (130) side through the fastening bar (140), and when both ends of the fastening bar (140) are fixed to the case part (130), they can be integrated together with the case part (130) through the fastening bar (140).

[0073] By doing so, when the fastening bar (140) is separated from the case part (130), the operator can selectively replace any one of the multiple flat filters (110).

[0074] As a result, even if the filter module (100) for a gravity-type water purification device according to one embodiment of the present invention includes a plurality of flat plate filters (110) arranged parallel to each other, it can be easily assembled and separated through the fastening bar (140), thereby improving maintainability.

[0075] In such a case, the case part (130) may be provided with a handle (137) so that the worker can easily attach it.

[0076] Accordingly, the operator can easily move the filter module (100) for a gravity-type water purification device according to one embodiment of the present invention using the handle (137) while the plurality of flat filters (110) and the case part (130) are interconnected through the connecting bar (140).

[0077] To this end, the case portion (130) may be arranged to surround the front, rear, and top surfaces of the filter portion while both sides of the filter portion are open, and may include a plurality of through holes (134, 135) through which the raw water passes so that the raw water can be smoothly supplied to the filter portion, and may fix both ends of the fastening bar (140) that fastens the plurality of flat plate filters (110).

[0078] For example, the case portion (130) may include a front plate (131) that covers the front of the filter portion and has a plurality of first through holes (134) formed through it as shown in FIGS. 1 and 2, a rear plate (132) that covers the rear of the filter portion and has a plurality of second through holes (135) formed through it, and a top plate (133) that covers the upper surface of the filter portion while connecting the front plate (131) and the rear plate (132).

[0079] Accordingly, the case portion (130) can protect the filter portion by being arranged to surround the front, rear, and top surfaces of the filter portion, and raw water can smoothly move from the outside of the case portion (130) to the filter portion side through the open sides of the filter portion, the first through hole (134), and the second through hole (135).

[0080] At this time, the case part (130) may be made of a metal material with a specific gravity higher than that of water.

[0081] For example, the above case part (130) may be made of stainless steel.

[0082] Accordingly, the case portion (130) can increase the total weight of the filter module (100) for a gravity-type water purification device according to one embodiment of the present invention.

[0083] That is, the filter module (100) for a gravity-type water purification device according to the present invention can sink to the bottom surface of a storage tank (200) filled with raw water without using a separate restraining member, as the total weight is increased through the case part (130).

[0084] Through this, as illustrated in FIG. 11, when the amount of raw water stored in the storage tank (200) is sufficient, the filter module (100) for a gravity water purification device according to one embodiment of the present invention can be placed in the storage tank (200) in a state where it is completely submerged in the raw water, and even when the amount of raw water stored in the storage tank (200) is small, the filter module (100) for a gravity water purification device according to one embodiment of the present invention can maintain a state of being submerged on the bottom surface of the storage tank (200) to maximize the amount of raw water in contact with the filtration member (111).

[0085] Through this, the case portion (130) can perform both the first role of covering the filter portion to protect the plurality of flat-plate filters (110) and the second role of increasing the total weight of the filter module (100) for the gravity water purification device so that the filter module (100) for the gravity water purification device can be smoothly immersed in raw water by its own weight.

[0086] In this case, the case portion (130) may include a pair of extension plates (136a, 136b) extending in one direction from each end of the front plate (131) and the rear plate (132).

[0087] For example, the pair of extension plates (136a, 136b) may extend in a direction perpendicular to the front plate (131) and the rear plate (132). As a non-limiting example, when a filter module (100) for a gravity water purification device according to one embodiment of the present invention is placed on the bottom surface of a storage tank (200), the pair of extension plates (136a, 136b) may extend in a direction parallel to the bottom surface of the storage tank (200).

[0088] Accordingly, when the filter module (100) for a gravity water purification device according to one embodiment of the present invention sinks to the bottom surface of the storage tank (200) through the case part (130), the filter module (100) for a gravity water purification device can maintain a stable upright state on the bottom surface of the storage tank (200) through the pair of extension plates (136a, 136b) as shown in FIG. 11.

[0089] At this time, the first through hole (134) and the second through hole (135) formed in the front plate (131) and the rear plate (132), respectively, may be formed as elongated holes having a predetermined length, and may be formed long in a direction parallel to the height direction of the front plate (131) and the rear plate (132) so as to minimize the generation of buoyancy when the filter module (100) sinks.

[0090] Meanwhile, as shown in FIGS. 3 and 4, the above-mentioned fastening bar (140) can have both ends fixed to the front plate (131) and the rear plate (132) respectively, so that the lower end of the flat plate filter (110) is positioned on the upper side than the pair of extension plates (136a, 136b).

[0091] Accordingly, when a filter module (100) for a gravity-type water purification device according to one embodiment of the present invention is installed on the bottom surface of a storage tank (200), the lower end of each flat plate filter (110) constituting the filter section may be positioned at a certain height apart from the bottom surface of the storage tank (200).

[0092] In other words, when the amount of raw water stored in the storage tank (200) is greater than a certain amount, the filter module (100) can be maintained in a state of being completely immersed in the raw water, and as shown in FIG. 4, the filter member (111) in each flat plate filter (110) can always be maintained at a certain height away from the bottom surface of the storage tank (200).

[0093] To this end, the fastening hole (138) may be formed in the front plate (131) and the rear plate (132), respectively, so as to be spaced a certain height apart from the pair of extension plates (136a, 136b).

[0094] Accordingly, when a plurality of flat filters (110) integrated through the above-mentioned fastening bar (140) are coupled to the case portion (130), the plurality of flat filters (110) can be maintained at a certain height apart from the pair of extension plates (136a, 136b).

[0095] Through this, the filter member (111) in each flat plate filter (110) can always be maintained at a certain height away from the bottom surface of the storage tank (200).

[0096] Accordingly, a sedimentation space (S) in which foreign substances are deposited may be formed between the filter section and a pair of extension plates (136a, 136b), and foreign substances separated from the raw water may be deposited in the foreign substance sedimentation space (S) during the process of producing filtered water from the raw water.

[0097] As a result, in the filter module (100) for a gravity water purification device according to one embodiment of the present invention, since a foreign substance deposition space (S) can be formed between the filter part and a pair of extension plates (136a, 136b), foreign substances separated from the raw water during the process of producing filtered water through the filtration member (111) can be deposited in the foreign substance deposition space (S).

[0098] Through this, the possibility of the filter member (111) coming into contact with foreign substances accumulated in the foreign substance sedimentation space (S) after being separated from the raw water is fundamentally prevented, thereby preventing contamination by foreign substances separated from the raw water.

[0099] Accordingly, the filter module (100) for a gravity water purification device according to one embodiment of the present invention can minimize contact between foreign substances separated from raw water and a filter member (111) for producing filtered water from raw water, thereby reducing the cleaning cycle of the filter member (111) to facilitate maintenance and ensuring water quality stability.

[0100] In this way, in a filter module (100) for a gravity-type water purification device according to one embodiment of the present invention, the case portion (130) can perform all three roles: a first role of covering the filter portion to protect the plurality of flat-plate filters (110); a second role of increasing the total weight of the filter module (100) so that the filter module (100) for a gravity-type water purification device can be smoothly immersed in raw water by its own weight; and a third role of separating the filter member (111) by a certain height from the bottom surface of a storage tank (200) in which a certain amount of raw water is stored.

[0101] Meanwhile, the filter module (100) for the gravity-type water purification device described above can be implemented as a gravity-type water purification device (1000) that produces filtered water using gravity.

[0102] For example, a gravity water purification device (1000) according to one embodiment of the present invention may include a storage tank (200) and a filter module (100) as shown in FIG. 11.

[0103] The above storage tank (200) can store a certain amount of raw water, which is the liquid to be treated, and a filter module (100) for producing filtered water from the raw water can be placed inside. To this end, the above storage tank (200) can be formed in the shape of an enclosure having a predetermined internal space.

[0104] Here, the filter module (100) may be the aforementioned filter module (100) for a gravity-type water purification device, and the filter module (100) may be positioned in the internal space so as to be located on the bottom surface of the storage tank (200).

[0105] That is, the filter module (100) can be positioned in the internal space such that the aforementioned pair of extension plates (136a, 136b) come into contact with the bottom surface of the storage tank (200).

[0106] In this case, a filtered water discharge port (210) connected to a filter module (100) disposed in the internal space may be provided on one side of the storage tank (200), and a known opening / closing valve (300) may be installed on the side of the filtered water discharge port (210).

[0107] For example, the filtered water discharge port (210) can be connected to the discharge port (122) of the filtered water collection unit (120) via the second connecting pipe (220).

[0108] Accordingly, the filtered water produced in the filter module (100) can be moved to the filtered water discharge port (210) through the filtered water collection unit (120) and the second connecting pipe (220).

[0109] Through this, when the filtered water discharge port (210) is opened by operating the above-mentioned opening / closing valve (300), the filtered water produced in the filter module (100) is discharged through the above-mentioned filtered water discharge port (210), and water pressure due to gravity or potential energy may be generated in the internal space.

[0110] As a result, the raw water stored in the internal space can be changed into filtered water by penetrating into the filter member (111) of the filter module (100) by water pressure and filtering out foreign substances, and the filtered water produced in the filter module (100) can be moved toward the filtered water discharge port (210).

[0111] Thus, a gravity-type water purification device (1000) according to one embodiment of the present invention can produce filtered water from raw water by utilizing water pressure resulting from gravity or potential energy. Through this, since the gravity-type water purification device (1000) according to one embodiment of the present invention can produce filtered water without using additional power such as electricity, it is possible to conveniently produce the necessary filtered water even in harsh environments where infrastructure such as electricity is not installed or where it is difficult to supply electricity.

[0112] Although an embodiment of the present invention has been described above, the concept of the present invention is not limited to the embodiments presented in this specification. Those skilled in the art who understand the concept of the present invention may easily propose other embodiments within the scope of the same concept by adding, changing, deleting, or adding components, and such embodiments shall also be considered to fall within the scope of the concept of the present invention. Explanation of the symbols

[0113] 100: Filter module for gravity-type water purification system 110: Flat plate filter 111 : Filter member 111a : Support 111b: Adhesive layer 111c: Nanofiber web 112 : Frame 112a : 1st edition 112b : 2nd edition 112c : Euro 112d : Restraint member 113,113',113" : Connecting member 113a : Part 1 113b : Part 2 113c : Body 113d : Through hole 113e : Protrusion 113f : Groove 114: Receiver 120: Filtered water collection unit 121 : Inlet 122 : Outlet 123 : First connector 130 : Case section 131 : Front panel 132 : Back panel 133 : Top plate 134 : First through hole 135 : Second through hole 136a, 136b : Extension plate 137 : Handle 138 : Fastening hole 140 : Connecting bar 1000 : Gravity-type water purifier 200 : Storage tank 210 : Filtered water discharge outlet 220 : Second connecting pipe 300 : Shut-off valve

Claims

Claim 1 A filter module for a gravity-type water purification device comprises: a filter section including a plate-shaped filtration member having a predetermined area and a plurality of flat-plate filters arranged parallel along one direction such that one surface of the filtration member faces each other at a distance; a filtered water collection section for collecting filtered water produced from each of the plurality of flat-plate filters; and a case section arranged to surround the front, rear, and top surfaces of the filter section with both sides of the filter section open, and including a plurality of through holes through which raw water passes so as to smoothly supply raw water toward the filter section, and fixing both ends of a fastening bar that fastens the plurality of flat-plate filters; wherein the case section comprises: a front plate covering the front surface of the filter section with a plurality of first through holes formed through it; a rear plate covering the rear surface of the filter section with a plurality of second through holes formed through it; and a top plate covering the top surface of the filter section while connecting the front plate and the rear plate. A filter module for a gravity-type water purification device comprising: a pair of extension plates extending outward from each end of the front plate and the rear plate and contacting the bottom surface of the storage tank; wherein the case portion performs a first role of covering the filter portion to protect the plurality of flat-plate filters, a second role of increasing the total weight of the filter module so that the filter module can sink in the raw water by its own weight, and a third role of separating the filter member by a certain height from the bottom surface of the storage tank in which a certain amount of raw water is stored. Claim 2 delete Claim 3 delete Claim 4 A filter module for a gravity-type water purification device according to claim 1, wherein the fastening bar has both ends fixed to the front plate and the rear plate, respectively, so that the filtration member is positioned on the upper side above the pair of extension plates while the plurality of flat-plate filters are fastened. Claim 5 In claim 1, the flat plate filter comprises: a filtration member formed in a plate shape having a predetermined area; a support frame coupled to the edge side of the filtration member to support the filtration member, and having a flow path formed therein for filtered water produced through the filtration member to flow; and a connecting member coupled to one side of the support frame and coupled to the fastening bar; a filter module for a gravity-type water purification device. Claim 6 In claim 5, the connecting member comprises a first part that surrounds the support frame and a second part that extends from the first part, wherein the second part has a wider width than the first part and includes a body formed with a through hole so that the fastening bar can pass through, a hollow protrusion formed protruding from the first surface of the body while defining the edge of the through hole, and a hollow groove formed in the second surface of the body opposite to the first surface while surrounding the edge of the through hole, wherein the through hole is formed in the body to penetrate both the protrusion and the groove, and two flat filters arranged parallel to each other are a filter module for a gravity-type water purification device in which the fastening bar passes through the through hole formed in each of the two flat filters, and the protrusion formed in one flat filter is inserted into the groove formed in the other flat filter and fixed. Claim 7 In claim 1, the case portion is a filter module for a gravity-type water purification device made of stainless steel. Claim 8 A gravity water purification device comprising: a storage tank having an internal space in which raw water is stored; and a filter module for a gravity water purification device as described in any one of claims 1, 4 to 7 disposed in the internal space to filter out foreign substances contained in the raw water, wherein the raw water is sucked toward the flat plate filter side by gravity to filter out foreign substances and produce filtered water.

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