JP5555297B2 - Portable water purification kit - Google Patents

Description

  The present invention relates to a portable water purification kit.

  With the recent increase in disaster prevention awareness, there is a great interest in securing water in emergencies. The present applicants have been diligently pursuing water purification, and have developed a portable water purification kit that meets the above requirements. In this portable water purification kit, a manual water purifier that does not require a power source such as electric power is disassembled so as to be excellent in portability, and can be easily assembled at the time of use. As a specific configuration, a microfiltration (MF) membrane, an ultrafiltration (UF) membrane, or a reverse osmosis (RO) membrane was used, and water was supplied to these filtration membranes with a manual pump. Thus, it is suitable for various uses such as leisure purposes, military equipment as well as disasters (for example, Patent Document 1).

JP 2010-221206 A

The above-mentioned portable water purification kit is a kit configured so that a manual water purifier can be assembled and disassembled, and can be accommodated in a carrying case in a state where each component is separated. It can remove fine particles, dissolved organic matter, algae, and general bacteria contained as suspended substances in the water source to be purified, and it is difficult to clog activated carbon cylinders and membrane filters for a long time. And ease of maintenance. In addition, this portable water purification kit is provided with a sand filter cylinder for functioning so that the water load applied to the membrane filter or the like can be maintained substantially uniformly, thereby reducing the pulsation of the manual pump. In addition, a pretreatment device using a paper filter cartridge is provided, and by capturing small particles, it is possible to prevent a decrease in the filtration capacity of the sand filter cylinder and the membrane filtration device and to perform stable water filtration over a long period of time. ing. On the other hand, there is room for improvement in that the configuration of the pretreatment device is complicated, maintenance is not easy, and the cost increases.
The present invention is to further improve the usability of the portable water purification kit as described above. Another object of the present invention is to simplify the configuration of a pretreatment device using a paper filter cartridge while ensuring the filtration capacity necessary for a water purifier constituted by a portable water purification kit.

(Aspect of the Invention)
The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and some of the components of each section are replaced, deleted, or further while referring to the best mode for carrying out the invention. Those to which the above components are added can also be included in the technical scope of the present invention.

  (1) A water purifier comprising a paper filter, an activated carbon filter, a membrane filter, and a pump, and connected by piping connecting these components, is configured to be disassembled into the respective components, and the paper filtration The vessel has a porous cylindrical support member, an outer filter paper wound around the cylindrical support member, and a bottomed cylindrical cylindrical wall that can be stored in a state where the outer filter paper is wound around the cylindrical support member. A housing formed with a water passage slit, a lid that closes the opening of the housing and has an opening communicating with the inside of the housing at the center, and is detachably connected to the opening from the inside of the lid; A portable water purification kit including a water collecting pipe having a water passage slit formed in a pipe wall, which is inserted into a central hole of the cylindrical support member (Claim 1).

The portable water purification kit described in this section includes a paper filter, an activated carbon filter, a membrane filter, and a pump, and these are connected by piping to constitute a water purifier.
In the paper filter, outer filter paper is wound around the outer periphery of a cylindrical support member made of a porous material such as sponge, and these are stored in a bottomed cylindrical housing. In addition, a water collecting pipe that is detachably connected to the opening from the inside of the lid is inserted into the central hole of the cylindrical support member housed in the housing, and the opening of the housing is closed by the lid. A cylindrical support member, a water collection pipe and an outer filter paper covering these are held in the housing.

Further, since a water passage slit is also formed in the wall of the water collecting pipe of the paper filter, the paper filter itself is used as a water collecting port by submerging the paper filter directly in a water source. Then, relatively large foreign matters such as leaves, twigs, vinyl pieces and the like are removed from the water to be treated by the water passage slit of the housing.
The raw water that has entered the housing after removing contaminants by the water passage slit of the cylindrical wall of the housing is further filtered by the outer filter paper and passes through the cylindrical support member having excellent water permeability. And it collects water from a water collection pipe through the water flow slit of a water collection pipe. That is, the paper filter according to this section constitutes a multiple filtration structure with the water passage slit of the housing and the outer filter paper. Further, the outer shape of the outer filter paper is not inadvertently crushed or bent by the cylindrical support member, and a shape suitable for filtration is maintained in the housing.

Further, when replacing the filter paper of the paper filter, the lid is removed from the housing, and at this time, the water collecting pipe is pulled out from the cylindrical support member together with the lid.
Subsequently, the outer filter paper is taken out together with the cylindrical support member from the housing, the outer filter paper wound around the cylindrical support member is removed, and a new outer filter paper is wound.
And by reassembling each element, the desired filtration performance of the paper filter is recovered.

(2) In the above item (1), the outer filter paper wound around the cylindrical support member is longer than the length of the cylindrical support member and is folded from both ends of the cylindrical support member into the central hole. A portable water purification kit housed in the housing (Claim 2).
In the portable water purification kit described in this section, the outer filter paper longer than the length of the cylindrical support member is folded from both ends of the cylindrical support member into the central hole portion, so that the elasticity of the outer filter paper and the cylindrical support member can be reduced. And the frictional force generated between them, the outer filter paper is fixed to the cylindrical support member. In addition, the water collecting pipe is inserted into the central hole of the cylindrical support member housed in the housing and housed in the housing, so that the water collecting pipe and the outer filter paper come into contact with each other and a gentle seal is formed between them. Is. In particular, when the cylindrical support member is made of an elastic member such as a sponge, the outer filter paper and the water collecting pipe are more securely attached to the cylindrical support member by elastic deformation of the cylindrical support member. It will be fixed.

(3) A portable water purification kit according to (1) and (2) above, comprising an inner filter paper wound around the water collecting pipe (Claim 3).
The portable water purification kit described in this section includes an inner filter paper wound around a water collecting pipe as a filter paper for filtering raw water. The water collecting pipe around which the inner filter paper is wound is inserted into the central hole of the cylindrical support member housed in the housing, and the inner filter paper is in contact with the outer filter paper wound around the cylindrical support member. By being housed in the case, a gentle seal is formed between the inner filter paper and the outer filter paper. In particular, when the cylindrical support member is made of an elastic member such as a sponge, the inner filter paper, the outer filter paper, and the water collecting pipe are separated from the cylindrical support member by elastic deformation of the cylindrical support member. It will be fixed more reliably. When replacing the filter paper of the paper filter, the lid is removed from the housing, and at this time, the water collecting pipe is pulled out from the cylindrical support member together with the lid, and a new inner filter paper is wound around.
The raw water that has entered the housing after removing contaminants by the water passage slit of the cylindrical wall of the housing is filtered by the outer filter paper, and further filtered by the inner filter paper, through the water passage slit of the water collecting pipe. The water is collected from the water collecting pipe. That is, the paper filter which concerns on this term comprises a triple filtration structure with the water flow slit of a housing, and filter paper.

(4) In the above item (3), the inner filter paper is longer than the length of the water collecting pipe and is left at the end opposite to the end of the water collecting pipe connected to the opening of the lid. , Wound around the water collecting pipe, and inserted into the central hole of the cylindrical support member together with the water collecting pipe, in a state of being folded into the water collecting pipe from the opposite end of the water collecting pipe, and the inner side of the water collecting pipe A portable water purification kit in which an end portion into which the filter paper is folded abuts against the inner surface of the bottom of the housing (Claim 4).
In the portable water purification kit described in this section, the inner filter paper longer than the length of the water collection pipe is folded into the water collection pipe from the end opposite to the end of the water collection pipe connected to the opening of the lid. The inner filter paper is fixed to the water collecting pipe by the frictional force generated between the inner filter paper and the water collecting pipe. Further, the inner filter paper is interposed between the end portion of the water collecting pipe where the inner filter paper is folded and the inner surface of the bottom portion of the housing, thereby closing the end portion. The raw water that bypasses the outer filter paper is prevented from directly entering the water collecting pipe from this end.

(5) In the above items (3) and (4), the outer filter paper is wound between one layer and two layers on the cylindrical support member, and the inner filter paper is two layers on the water collecting pipe. A portable water purification kit wound between three layers (claim 5)
In the portable water purification kit described in this section, the outer filter paper is wound between one layer and two layers around the cylindrical support member (for example, one and a half turns) to ensure necessary and sufficient filtration capacity. In addition, the amount of filter paper used is minimized. In addition, when replacing the filter paper of the paper filter, the filter paper can be easily attached to and detached from the cylindrical support member. On the other hand, the inner filter paper is wound between two to three layers (for example, two and a half turns) around the water collecting pipe. This minimizes the amount of inner filter paper used while minimizing the apparent fineness of the inner filter paper by multiplying the inner filter paper and increasing the foreign matter capture rate by the inner filter paper. It is.

(6) In the above items (1) to (5), the outer filter paper and / or the inner filter paper is made of a mixed fiber of pulp and PET, heated and pressurized by a heat roller, and the thickness after the treatment Is a portable water purification kit having a surface of 30 to 70 [mu] m and no water-repellent treatment on the surface.
In the portable water purification kit described in this section, the outer filter paper and / or the inner filter paper of the paper filter is not made of 100% pulp, but is made of a mixed fiber of pulp and synthetic resin material such as PET. The strength is improved by including a synthetic resin material. In particular, in the case of a mixed fiber containing pulp and PET in a ratio of about 1: 1 (weight ratio), it is preferable in terms of increasing the cutting strength. Moreover, since heat welding can be performed by using a mixed fiber with a synthetic resin material such as PET, processing into a required shape is facilitated.

Moreover, it is preferable that the outer filter paper and / or the inner filter paper is subjected to a heating / pressurizing treatment with a hot roll. Since the outer filter paper and / or the inner filter paper is heated and pressurized with a hot roll, the fuzz of the mixed fiber that suppresses the filtration rate can be reduced, and thus the filtration rate can be improved. Furthermore, it is preferable that the thickness of the filter paper after the treatment with the hot roll is about 30 to 70 μm. Since the thickness of the outer filter paper and / or inner filter paper is in the above range, the paper filter can be made compact without being bulky, so it is convenient to carry and reduces filtration resistance while maintaining sufficient filtration capacity. Will be. The thinner the filter paper, the lower the filtration resistance and the water permeability.
The outer filter paper and / or the inner filter paper is a material that has not been subjected to water repellent treatment, so that the filtration rate can be improved as compared with a material that has undergone water repellent treatment. In addition, by setting the basis weight of the outer filter paper and / or the inner filter paper to be about 20 to 40 g / m ² , the balance between the filtration rate and the suspended matter removability is excellent.

(7) In the above items (1) to (6), an air inflow plug protrudes from the outer surface of the bottom of the housing, and the air inflow plug is located at least along the inner surface of the cylindrical wall of the housing. A portable water purification kit in which an air hole is formed to eject air introduced from the water (claim 7).
In the portable water purification kit described in this section, a pump (a pump different from the pump described in the above (1)) is connected to an air inflow plug protruding from the bottom outer surface of the housing, and air is fed into the housing. Is possible. The air fed into the housing from the air inflow plug is ejected from the ejection hole provided at least along the inner surface of the cylindrical wall of the housing on the inner surface of the bottom portion of the housing. Foreign matter clogged in the outer filter paper is removed and washed.

(8) A portable water purification kit according to (7) above, comprising a sub-pump comprising a sub-pump that is always connected to the air inflow plug (claim 8).
The portable water purification kit described in this section is configured to send air into the housing by a sub pump with respect to the air inflow plug protruding from the outer surface of the bottom of the housing. When using this portable water purification kit, the sub-pump is always connected to the air inflow plug to remove foreign matter clogged in the water filter slit and the outer filter paper of the paper filter housing, and to wash it at an appropriate timing. It is possible to do. Further, since the air inflow plug is always connected to the sub pump, raw water does not inadvertently flow into the housing from the air inflow plug.

(9) In the above items (1) to (8), the paper filter, the pump, the sand filter, the activated carbon filter, and the membrane filter are connected in series by the pipe in this order. A portable water purification kit comprising a water purifier (Claim 9).
In the portable water purification kit described in this section, a paper filter, a pump, an activated carbon filter, and a membrane filter are connected in series by a pipe in this order to constitute a water purifier. The treated water that can be purified by this water purifier is not particularly limited as long as it is water that can be used as drinking water in an emergency, for example, artificial ponds, pools, ponds, lakes, creeks, bathtub water, etc. .

(10) In the above items (1) to (9), a part or all of each of the components is stored separately in a carry case including at least one of a strap, a handle, and a caster. The portable water purification kit according to any one of claims 1 to 9, wherein the kit is a portable water purification kit (claim 10).
The portable water purification kit described in this section is configured so that part or all of each component can be separated, and each component is stored in a separated state in a carry case including a handle, a shoulder strap, and a caster. , Compact. And according to the situation at the time of carrying, it makes use of any of the carrying case's back strap, handle and caster to secure a high degree of freedom in carrying such as carrying, carrying, and pulling on the back.

(11) In the above items (1) to (10), a sand filter is provided as pretreatment means for the activated carbon filter, and each of the sand filter, the activated carbon filter, and the membrane filter is provided with a filter cylinder. , The lower end of the filtration cylinder is configured as a cartridge that can be attached to and detached from the base, and includes an inlet for introducing treated water into the lower end of each filtration cylinder, and an outlet for taking out treated water, A portable water purification kit that constitutes a filtration device assembly by connecting an introduction port and an extraction port in series by a pipe provided in the base.
The portable water purification kit described in this section is a sand filter, an activated carbon filter, and a membrane filter, each inlet and outlet provided at the lower end of each filter tube is connected by piping provided in the base By connecting in series and constituting a filtration device assembly, the handling of the filtration device group as the main part is improved. Moreover, the sand filter, the activated carbon filter, and the membrane filter are configured as a cartridge and are detachable from the base, so that the handling property and the replacement workability of each unit are improved.

(12) In the above item (11), a quartz sand layer is provided as a filtration layer of the sand filter, and the quartz sand layer is made of crushed quartz sand obtained by crushing natural host rock, and has a particle size of 500 to 850 μm. A portable water purification kit containing 50% or more, preferably 60 to 90% of the total diameter.
When a filter medium with a smooth surface such as general sea sand, river sand, or mountain sand is used as the filter layer of a sand filter, the simple configuration with almost the same flow path spacing of the entire filter layer Therefore, a relatively large suspended material is thinned at the surface layer portion above the filtration layer, and the fine suspended material passes through the filtration layer. On the other hand, the portable water purification kit described in this section has a quartz sand layer as a filtration layer of a sand filter, and the quartz sand layer is made of crushed quartz sand obtained by crushing a natural host rock. In other words, the crushed quartz sand obtained by artificially crushing and sieving natural mother rock (silica stone, etc.) has a rough surface. Thus, it is possible to supplement various sizes of suspension throughout the filtration layer. Therefore, when a sand filter and a filter located at a later stage are arranged, it is difficult to cause clogging of these membrane filters and the like. In addition, by containing 50% or more, preferably 60-90% of the crushed quartz sand having a particle size of 500 to 850 μm by weight, it is possible to efficiently remove suspended matters and clog the sand filter. Is difficult to occur.

(13) The portable water purification kit according to (11) and (12), wherein the turbidity after filtration by the sand filter is 1 degree or less.
The portable water purification kit described in this section is used when an activated carbon filter or membrane filter is placed downstream of the sand filter due to the filtered water turbidity after filtration by the sand filter being 1 degree or less. In addition, these clogging are less likely to occur, and a long-term filtration capacity can be ensured.

(14) In the above items (1) to (13), the pump is a pump that generates discharge pulsation, such as a reciprocating pump, and air is disposed above the filtration layer in the filtration cylinder constituting the sand filter. A portable water purification kit comprising a water supply line from the inlet for introducing the water to be treated, provided at the lower end of the filtration cylinder, to the air layer.
The portable water purification kit described in this section is provided with an air layer above the filtration layer in the filtration cylinder of the sand filter, and is fed from an inlet for introducing the water to be treated provided at the lower end of the filtration cylinder. To-be-processed water is sent to an air layer by a water pipe line. And by reducing the pulsation of the water to be treated sent by the pump in the air layer, when activated carbon filter or membrane filter is placed downstream from the sand filter, the load on these is reduced In addition, long-term filtration capacity can be ensured.

  Since this invention was comprised in this way, it becomes possible to aim at the further improvement of the usability of a portable water purification kit. Moreover, it becomes possible to simplify the structure of the pre-processing apparatus using a paper filter cartridge, ensuring the filtration capacity of the simple water purifier comprised with a portable water purifying kit.

It is a schematic diagram which shows the manual type water purifier comprised by assembling the portable water purifying kit which concerns on embodiment of this invention. It is a three-dimensional view which shows the carry case which stores the manual water purifier shown in FIG. 1 in a disassembled state from various directions, (a) is a front perspective view, and (b) is in a state where a shoulder strap is stored. FIG. 4 is a rear perspective view, (c) a bottom perspective view, and (d) a rear perspective view partially showing a state in which a shoulder strap is exposed. It is explanatory drawing which shows the replacement | exchange procedure of the filter paper of the paper filter which comprises the manual water purifier which concerns on embodiment of this invention, (a) is a mode of decomposition | disassembly start, (b) is the cylinder which wound filter paper (C) is a state in which the filter paper is removed from the cylindrical support member, (d) is a state in which a new filter paper is taken out from the paper filter cylinder, and (e) is a state in which the filter paper is removed from the cylindrical support member. (F) shows how the new filter paper is wound and fixed, and (f) shows how it is assembled. It is a schematic diagram which shows the manual type water purifier comprised by assembling the portable water purifying kit which concerns on another embodiment of this invention. FIG. 5 shows the sand filter and the sand filter cleaning means extracted according to the embodiment shown in FIG. 4. It is a perspective view which shows the structure of the bottom part of the sand filter shown by FIG. 5, (a) is a bottom part extract figure, (b) shows only the sealing plate which comprises a bottom part. It is a perspective view which shows the lid | cover and water collection pipe | tube of the sand filter shown by FIG. 5, (a) is the state which removed the water collection pipe | tube from the lid | cover, (b) is a state before winding inner filter paper around a water collection pipe | tube. (C) shows the state where the inner filter paper is wound around the water collecting pipe.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
A portable water purification kit according to an embodiment of the present invention is a kit in which a manual water purifier 10 as shown in FIG. 1 is configured to be assembled and disassembled, and includes a paper filter 12, a pump 14, and sand filtration. A filter 16, an activated carbon filter 18 and a membrane filter 20 are provided. The sand filter 16, the activated carbon filter 18, and the membrane filter 20 are each configured as a cartridge whose lower end is housed in a filter cylinder that is detachable from the base 22. Each lower end portion is provided with an introduction port for introducing treated water and a take-out port for taking out treated water, and each introduction port and take-out port are connected in series by a pipe provided in the base 22. Thus, the filtration device assembly 24 is configured. Further, an appropriate packing such as an O-ring is provided at the joint between the inlet and outlet of the sand filter 16, the activated carbon filter 18 and the membrane filter 20 and the pipe provided in the base 22. Each of the joints is provided with a water leakage preventing seal at the joint while being detachable from the base 22.

The paper filter 12, the pump 14, and the filtration device assembly 24 are connected by flexible pipes 30 and 32 such as a hose. One end of the pipe 30 communicates with a water collecting pipe 62 (see FIG. 2), which will be described later, of the paper filter 12, and the other end is detachable from the pump 14 so that a seal in the mounted state is secured. (For example, a tight fit by the elasticity of the hose, a detachable plug, etc., and so on). A float 28 is attached to the pipe 30 so that the position can be adjusted. For the float 28, for example, polystyrene foam or the like is used. The pipe 32 has an appropriate configuration in which one end is detachable from the pump 14 and the other end is detachable from the base 22 and a seal in the mounted state is secured.
The base 22 is provided with a pipe 26 as a faucet for discharging the purified water finally filtered by the membrane filter 20, and the pipe 26 can be changed in angle in consideration of convenience. 22 is fixed. Further, the cartridge constituting the membrane filter 20 is provided with an air vent pipe 34 and an air vent valve 36 which are used at the start of use and at the end of use.
In addition, although illustration is abbreviate | omitted, faults, such as clogging of each part, can be easily grasped | ascertained by arrange | positioning a pressure gauge suitably to piping between each element which comprises the water purifier 10, and monitoring water supply pressure. It is also possible to do so.

And the portable water purification kit which concerns on embodiment of this invention is for storing the paper filter 12, the pump 14, the filtration apparatus assembly 24, and the piping 32 which comprise the water purifier 10 in the state decomposed | disassembled in each. , A carry case 38 shown in FIG. 2 is provided.
The carry case 38 includes a shoulder strap 40, a handle 42 and a caster 44. Among these, the shoulder strap 40 is accommodated in a cover pocket 48 that can be freely opened and closed by a line fastener 46 shown in FIG. Then, by opening the wire fastener 46 and turning over the cover pocket 48 as shown in FIG. 2C, the back strap 40 is exposed and the back strap 40 can be used. Note that the cover pocket 48 can be fixed to the bottom surface of the carry case 38 by the hook-and-loop fastener 50 in a state of being turned over as shown in FIG. In addition, the cover pocket 48 includes a caster cover 52 that covers the caster 44 in this state.
The handle 42 is a retractable handle that can be extended and contracted. The casters 44 are provided at two locations on the bottom surface of the carry case 38 so that the casters 44 are grounded when the handle 42 is gripped and walked.

Then, each component which comprises the water purifier 10 of FIG. 1 is demonstrated in detail.
The paper filter 12 has a porous cylindrical support member 54 partially shown in FIGS. 3C and 3E, and is longer than the length of the cylindrical support member 54, and is wound around the outer periphery of the cylindrical support member 54. The filter paper (outer filter paper) 56 formed into a rectangle is provided. The filter paper 56 used here is not a 100% pulp material, but is composed of a mixed fiber of pulp and a synthetic resin material such as PET, and the strength is improved by including the synthetic resin material. is there. In particular, in the case of a mixed fiber containing pulp and PET in a ratio of about 1: 1 (weight ratio), it is preferable in terms of increasing the cutting strength. Moreover, since heat welding can be performed by using a mixed fiber with a synthetic resin material such as PET, processing into a required shape is facilitated.

In addition, since the filter paper 56 is heated / pressurized by a heat roll, the fuzz of the mixed fiber that suppresses the filtration rate can be reduced, and thus the filtration rate can be improved. Furthermore, since the thickness of the filter paper 56 after the treatment with the heat roll is about 30 to 70 μm, the paper filter 12 can be made compact without being bulky, so that it is convenient for carrying and sufficient filtration capacity. While maintaining, the filtration resistance is reduced.
Since the filter paper 56 is a material that has not been subjected to water repellent treatment, the filtration speed can be improved as compared with a material that has undergone water repellent treatment. In addition, by setting the basis weight of the filter paper 56 to about 20 to 40 g / m ² , the balance between the filtration speed and the suspended substance removal property is excellent.

As described above, the filter paper 56 is made of a mixed fiber of pulp and PET, heated and pressurized by a heat roller, the thickness after the treatment is 30 to 70 μm, and the surface is not subjected to water repellent treatment However, it is not limited to this as long as the filtration performance required for the paper filter 12 can be obtained.
In this example, the filter paper 56 has a thickness of 35 μm. Further, by setting the average pore diameter of the filter paper 56 to 28 μm, the turbidity removal performance is enhanced. Moreover, by setting the porosity to 51%, the filtration resistance is reduced and the water permeability is enhanced. Furthermore, the cost of the filter paper is reduced by making the basis weight approximately 15 g / m ² .
Also, in order to enable the use of filter paper for a long time, the linear velocity LV of the filter paper (calculated by dividing the flow rate by the cross-sectional area of the filter cylinder at the speed of water passing through the cross-sectional area of the filter cylinder per unit time) ) Is preferably about 5 to 15 m ³ / m ² / day in a bundle (LV) in Shimizu.

Further, as shown in FIGS. 3A and 3F, the paper filter 12 has a bottomed cylindrical housing 58 that can be accommodated in a state in which the filter paper 56 is wound around a cylindrical support member 54, and a housing 58. And a lid 60 for closing the opening. An internal thread is formed on the inner peripheral surface of the cylinder near the opening of the housing 58, and an external thread is formed on the outer peripheral surface of the cylinder of the lid 60 to be engaged with the internal thread of the housing 58. Screwed together.
Moreover, the water collecting pipe 62 (refer FIG.3 (b) (f)) connected detachably with respect to the opening part formed in the center part of the lid | cover 60 is included. The water collecting pipe 62 is inserted into the central hole 54a of the cylindrical support member 54 (see FIGS. 3B and 3E). The housing 58, the lid 60, and the water collecting pipe 62 are made of synthetic resin such as ABS resin or PVC resin, and can be integrally formed by blow molding, extrusion molding, or the like.

Furthermore, an oval water passage slit 58a is formed in at least the cylindrical outer wall portion of the housing 58 as shown in FIGS. 3 (a) and 3 (f). In the illustrated example, the outer diameter of the cylindrical housing 58 is 100 mm, the length is 200 mm, and the opening width of the water passage slit 58a is 3 to 5 mm.
Further, at least a portion of the water collecting pipe 62 inserted into the central hole portion 54a of the cylindrical support member 54 has a water passage slit 62a schematically shown in a linear shape in FIGS. Is formed. The opening width of the water passage slit 62a is 1 to 3 mm.

Then, as shown in FIG. 3 (e), the filter paper 56 is folded from the both end portions into the central hole portion 54a while being wound around the cylindrical support member 54, and is shown in FIG. 3 (f). As described above, the housing 58 is accommodated in a manner in contact with the water collecting pipe 62. If a member having elasticity such as sponge is used for the cylindrical support member 54 made of a porous material, the filter paper 56 is folded into the central hole 54a of the cylindrical support member 54, and the water collecting pipe 62 is further provided. By being inserted, a gradual seal structure is formed at the connecting portion of each member by utilizing the elasticity of the cylindrical support member 54 and the filter paper 56.
In addition, according to verification by the present inventors, the filter paper wound around the cylindrical support member 54 exhibits necessary and sufficient filtering ability by being wound in 1 to 3 layers, that is, in a double manner.

As for the filter paper 56 of the paper filter 12, when the filth increases on the surface or clogging or the like occurs to reduce the filtration capacity, the filter paper 56 is replaced to restore the desired filtration capacity. be able to. The replacement work of the filter paper 56 can be performed by the following procedure.
First, as shown in FIG. 3A, the housing 58 and the lid 60 screwed together are relatively rotated, and the lid 60 is removed from the housing 58. At this time, as shown in FIG. 3B, the cylindrical support member 54 around which the filter paper 56 is wound is pulled out from the housing 58, and the water collecting pipe 62 is further removed from the central hole 54 a of the cylindrical support member 54. Pull out. Alternatively, the lid 60 is removed from the housing 58, and at this time, the water collecting pipe 54 is pulled out from the central hole 54 a of the cylindrical support member 54 together with the lid 60, and then the cylindrical support member around which the filter paper 56 is wound from the housing 58. Pull 54 out.

Subsequently, as shown in FIG. 3C, the filter paper is taken out from the housing together with the cylindrical support member 54, and the filter paper 56 wound around the cylindrical support member 54 is removed. Then, as shown in FIG. 3 (d), a new filter paper 56 is taken out from the filter paper storage case 64 included in the carry case 38 as a set, and a cylindrical support is provided as shown in FIG. 3 (e). A new filter paper 56 is wound around the member 54. At this time, both end portions of the filter paper 56 longer than the length of the cylindrical support member 54 are folded and inserted into the central hole portion 54a with fingers.
Thereafter, as shown in FIG. 3 (f), the cylindrical support member 54 with the filter paper 56 wound thereon is inserted into a bottomed cylindrical housing 58, and the water collecting pipe 62 is further connected to the cylindrical support member 54. The lid 60 is attached to the opening of the housing 58 so as to be inserted into the central hole 54a. At this time, the filter paper 56 is exchanged by rotating the housing 58 and the lid 60 together by relatively rotating in the fixing direction.

Moreover, the pump which does not require power sources, such as a reciprocating manual pump, is used for the pump 14 of the water purifier 10 of FIG. A reciprocating pump (so-called reciprocating pump) is a pump having a structure in which a piston or plunger reciprocates in a cylinder (cylinder) to change the volume in the cylinder, thereby sucking and sending out liquid. Specifically, for example, a reciprocating pump described in Japanese Patent No. 3457301 can be used.
The pump 14 is not limited to a manual type, and naturally, an electric pump may be used when used in a place where a power source is secured. In the case of an electric pump, it is not limited to a reciprocating pump, and is not limited to a type as long as it can pump up and feed water to be treated.

As the sand filter 16 of the filter assembly 24 of the water purifier 10 of FIG. 1, the one having a quartz sand layer 16a (see FIG. 1) as a filtration layer in a cylindrical container is used. The quartz sand layer is made of crushed quartz sand obtained by crushing natural host rock, and contains 50 to 50%, preferably 60 to 90% of the total particle size of 500 to 850 μm. .
This sand filter 16 is used as a pretreatment means when the water to be treated (raw water) sent by the pump 14 is filtered by the activated carbon filter 18 and the membrane filter 20, and the sand filter 16 The filtered water turbidity after filtration by is desirably 1 degree or less.

The LV per water area of the sand filter 16 is preferably about ^{3 to} 6 m ³ / m ² / hour. The sand filter 16 has a water purification rate per volume, that is, a volume rate SV (represented by the reciprocal of the time during which the raw water contacts the filtration layer per unit time) of about ^{30 to} 50 m ³ / m ² / hour. It is desirable to be. When the LV and SV of the sand filter 16 are in such a range, it is excellent in removal of suspended matters, prevention of wave motion, and setting of appropriate setting conditions.
Furthermore, although illustration is abbreviate | omitted, the to-be-processed water provided in the lower end part of the filtration cylinder is provided with the air layer above the filtration layer 16a (refer FIG. 1) in the filtration cylinder which comprises the sand filter 16. It is preferable that a water supply pipe line from the introduction port to the air layer is provided, and water is passed from above to below during filtration.

The activated carbon filter 18 is a cylindrical container filled with activated carbon, and in particular, by making the filled activated carbon into a cartridge system, the ease of handling in an emergency such as a disaster is improved. .
The membrane filter 20 contains an ultrafiltration membrane (UF membrane) in a cylindrical container, which is a microfiltration membrane (MF membrane), nanofiltration membrane (NF membrane) or reverse osmosis membrane. It is good also as replacing with other filtration membranes.

  In addition, about the sand filter 16, a purification | cleaning function can be recovered | restored by taking out a quartz sand layer from the inside of a cylindrical container, and returning to a cylindrical container after wash | cleaning with purified water. On the other hand, the activated carbon filter 18 and the membrane filter 20 exhibit a predetermined purification function by replacing them with new ones after a certain period of use.

Then, the purification procedure of water by the water purifier 10 of FIG. 1 is illustrated below.
First, the paper filter 12 is put into the water source 66. At this time, if pollutants accumulate on the water surface or bottom of the water source 66, the position of the float 28 provided in the pipe 30 is adjusted so that the dirt is not absorbed, and the paper filtration is performed. The position of the vessel 12 in water is set appropriately. It should be noted that for a while after the paper filter 12 is immersed in the water source 66, it is desirable to leave the paper filter 12 without performing the filtering operation until the paper filter 12 becomes familiar with water.

Subsequently, the pipe 30 is connected to the pump 14. And after injecting priming water into the pump 14 and confirming that the water is surely pumped up, the pump 14 and the filter assembly 24 are connected by a pipe 32. And after confirming the connection of each connection part, the raw | natural water of the water source 66 is attracted | sucked from the paper filter 12 by operating a manual pump. At this time, the inflow of substances that cause clogging in the water purifier 10 is blocked by the filter paper 56 (see FIG. 1), and the desired filtration performance is maintained. In the sand filter 16, the flow of water changes due to the particles of the quartz sand layer 16 a having various shapes, and most suspended substances are captured by capturing impurities in the entire quartz sand layer 16 a. The Subsequently, in the activated carbon filter 18, the chromaticity component and the odor component are removed. Further, in the membrane filter 20, components (including general bacteria and E. coli) that could not be removed in the previous stage are removed and supplied as purified water from the pipe 26 of the base 22.

Now, according to the embodiment of the present invention configured as described above, the following operational effects can be obtained.
In the portable water purification kit according to the embodiment of the present invention, a paper filter 12, a pump 14, a sand filter 16, an activated carbon filter 18, and a membrane filter 20 are connected by pipes 30 and 32 in this order. Thus, the water purifier 10 is easily configured. Moreover, the water purifier 10 is configured to be disassembled into these components, and each component is housed in a disassembled state in a carry case 38 including a handle 42, a back strap 40, and a caster 44, so that the water purifier 10 is compact. It can be summarized. And according to the situation at the time of transportation, it is possible to ensure a high degree of freedom in carrying, such as carrying, carrying, pulling, etc., by using any of the carrying strap 38, the strap 40, the handle 42 and the caster 44. It becomes.

Further, the paper filter 12 wraps a filter paper 56 longer than the cylindrical support member 54 around a cylindrical support member 54 made of a porous material such as sponge, and these are accommodated in a bottomed cylindrical housing 58. The opening portion of the housing 58 is closed by a lid 60. Then, the water collecting pipe 62 fixed to the lid 60 is inserted into the central hole 54 a of the cylindrical support member 54 accommodated in the housing 58. With this configuration, water in the housing 58 is filtered by the filter paper 56, passes through the cylindrical support member 54 having excellent water permeability, and is collected from the water collecting pipe 62. At this time, the cylindrical support member 54 does not inadvertently crush or bend the filter paper 56, and a shape suitable for filtration is maintained, and filtration is performed over the entire filter paper 56 covering the surface of the cylindrical support member 54. Will be done.
When replacing the filter paper 56 of the paper filter 12, the cover 60 is removed from the housing 58, and at this time, the water collecting pipe 62 is pulled out from the cylindrical support member 54 together with the cover 60, and the filter paper is combined with the cylindrical support member 54. This can be done by taking 56 out of the housing 58, removing the filter paper 56 wound around the cylindrical support member 54, and winding a new filter paper 56.

  Further, the filter paper 56 is folded into the central hole portion 54a from the both ends of the cylindrical support member 54, so that the filter paper 56 is cylindrically supported by the frictional force generated between the filter paper 56 and the cylindrical support member 54. 54 is fixed. Further, the water collecting pipe 62 is inserted into the central hole 54 a of the cylindrical support member 54 housed in the housing 58, and is housed in the housing 58 in such a manner that it contacts the water collecting pipe 62. The filter paper 56 comes into contact with each other, and a gentle seal is made between them. In particular, when the cylindrical support member 54 is made of an elastic member such as a sponge, the filter paper 56 and the water collecting pipe 62 are separated from the cylindrical support member 56 by elastic deformation of the cylindrical support member 54. Thus, it will be more securely fixed.

Moreover, the filter paper 56 is wound in one to three layers around the cylindrical support member 54, so that necessary and sufficient filtration capacity can be secured and the amount of the filter paper 56 used can be minimized. Become. In addition, when the filter paper 56 of the paper filter 12 is replaced, the filter paper 56 can be easily attached to and detached from the cylindrical support member 54. The cylindrical support member 54 can maintain the shape suitable for the filtration of the filter paper 56, and can be easily and reliably attached to and detached from the housing 58.
Further, since the water passage slit 62a is formed at least in the portion of the water collecting pipe 62 inserted into the central hole portion 54a of the cylindrical support member 54, the water in the housing 58 is filtered by the filter paper 56 and passed. After passing through the cylindrical support member 54 excellent in water, water is collected in the water collecting pipe 62 through the water passage slit 62a.

  Further, the water purifier 10 constituted by the portable water purification kit according to the embodiment of the present invention has the water filtration slit 58a formed in the housing 58 of the paper filter 12, so that the paper filter 12 is connected to the water source 66. The paper filter 12 itself can be used as a water collection port by being submerged directly in the water. Then, it is possible to remove relatively large foreign substances such as leaves, twigs, vinyl pieces and the like from the water to be treated by the water passage slit 58a of the housing 58.

  Moreover, each inlet and outlet provided in the lower end of each filter cylinder of the sand filter 12, activated carbon filter 18 and membrane filter 20 are connected in series by a pipe provided in the base 22, By constituting the filtration device assembly 24, the handling properties of the filtration device groups 12, 18, and 20, which are the main parts, are enhanced. Further, the sand filter 12, the activated carbon filter 18, and the membrane filter 20 are configured as a cartridge and are detachable from the base 22, so that the filter devices 12, 18, and 20 can be handled individually. And the workability of replacement can be improved.

Moreover, the water purifier 10 comprised by the portable water purification kit which concerns on embodiment of this invention has a quartz sand layer as the filtration layer 16a of the sand filter 16, and this quartz sand layer crushes a natural mother rock. It is made of crushed quartz sand. In other words, the crushed quartz sand obtained by artificially crushing and sieving natural mother rock (silica stone, etc.) has a rough surface. Therefore, the suspension of various sizes can be supplemented throughout the filtration layer 16a. Therefore, when the sand filter 16 and the activated carbon filter 18 and the membrane filter 20 located in the latter stage are arranged, it is difficult to cause clogging of them. Further, by containing 50% or more, preferably 60-90% of the crushed quartz sand having a particle size of 500 to 850 μm by weight, it is possible to efficiently remove suspended matters and at the same time, the sand filter 16 Clogging is unlikely to occur.
And when the filtration water turbidity after filtration by the sand filter 16 is 1 degree or less, clogging of the activated carbon filter 18 and the membrane filter 20 which are located at a later stage than the sand filter 16 is less likely to occur, The long-term filtration capacity can be ensured.

Then, the water purifier 70 comprised by assembling the portable water purifying kit which concerns on the application example of embodiment of this invention is demonstrated, referring FIGS. 4-6. Here, about the same part as the water purifier 10 shown by FIG. 1, or a part corresponding, it shows with the same code | symbol and abbreviate | omits detailed description.
The manual water purifier 70 shown in FIG. 4 is different from the water purifier 10 shown in FIG. 1 in that the sand filter 16 is omitted. That is, without using the sand filter 16 used as a pretreatment means when the treated water that has passed through the paper filter 14 is filtered by the activated carbon filter 18 and the membrane filter 20 shown in FIG. Organic matter, chromaticity components, and the like are removed by the activated carbon filter 18, and solid-liquid separation is further performed by the membrane filter 20. Examples of the filtration membrane used in the membrane filter 20 include an MF membrane, a UF membrane, and an RO membrane.

In this application example, a cleaning means 72 for the paper filter 12 is provided. The cleaning means 72 is connected to a paper filter 12 by a hose 76, for example, a sub pump 74 such as a bicycle air pump, and air is sent from the sub pump 74 to the paper filter 12 so that the paper filter 12 is clogged. Is to eliminate. As with the pump 14, the sub pump 74 is not limited to a manual type, and naturally, an electric pump may be used when used in a place where a power source is secured.
The cleaning means 72 has the following configuration. As shown in FIGS. 5 and 6, an air inflow plug 80 projects from the outer surface of the bottom 78 of the housing 58 of the paper filter 12. In the illustrated example, the air inflow plug 80 is a metal tube having a male screw formed on the outer periphery, and is hermetically connected by screwing with a female screw of a connecting plug 76a provided at the tip of a hose 76 extending from the sub pump 74. Is.

The air inflow plug 80 is provided so as to penetrate the center of the disc-shaped sealing plate 82, and the inner cylinder wall of the air inflow plug 80 is exposed on the upper surface of the sealing plate 82. Yes. The sealing plate 82 is fixed from the outside with a slight gap with respect to the bottom plate 84 of the bottom 78 of the housing 58, whereby the bottom 78 of the housing 58 forms a double bottom structure.
A plurality of ejection holes 86 are formed at positions along the inner surface of the cylindrical wall of the housing 58 of the bottom plate 84 constituting the inner surface of the bottom portion 78 of the housing 58. For this reason, the inside of the housing 58 and the air inflow plug 80 communicate with each other through a slight gap formed between the sealing plate 82 and the bottom plate 84. In the illustrated example, the inner diameter of the air inflow plug 80 is 6 mm, the diameter of the ejection hole 86 is 2 to 3 mm, and is provided at 8 to 10 points in the circumferential direction along the peripheral edge of the bottom plate 84 at equal intervals. It has been.
The housing 58 and the bottom plate 78 are welded to each other, and the bottom plate 78 and the sealing plate 82 are also welded to each other. Therefore, the air introduced from the inflow plug 74 is ejected from the ejection hole 86, and the air ejected from the ejection term 86 is supplied into the housing 58 without leaking from the bottom portion 78. On the other hand, the raw water 66 does not enter the housing 58 via the bottom plate 78.

Further, as shown in FIG. 7A, the water collecting pipe 62 is also detachably connected from the inside of the lid 60 to the opening 60 a of the lid 60 of the housing 58 in this example. The opening 60a of the lid 60 of the housing 58 protrudes in a cylindrical shape, to which a flexible pipe 30 such as a hose is connected. The filter paper (inner filter paper) 56B is also wound around the water collecting pipe 62. At this time, as shown in FIG. 7B, the inner filter paper 56 </ b> B is also cut longer than the length of the water collection pipe 62. Then, the inner filter paper 56B is wound around the water collection pipe 62 so as to be left in the end 62c opposite to the end 62b of the water collection pipe 62 connected to the opening 60a of the lid 60. Furthermore, it is folded into the water collection pipe 62 from the opposite end 62c of the water collection pipe 62 (see FIG. 7C).

The water collection pipe 62 around which the inner filter paper 56 is wound is inserted into the central hole 54a of the cylindrical support member 54 in a state of being attached to the lid 60, as in the example of FIG. Then, the end portion 62 c into which the inner filter paper 56 </ b> B of the water collecting pipe 62 is folded contacts the bottom surface of the housing 58, that is, the bottom plate 84 of the bottom portion 78 of the housing 58.
Further, in this example, similarly to the example of FIG. 3, a filter paper (outer filter paper) 56 longer than the cylindrical support member 54 is wound around the cylindrical support member 54 and used. The outer filter paper 56 and the inner filter paper 56B have the same specifications. In this example, the outer filter paper 56 is wound around the cylindrical support member 54 by one and a half turns. On the other hand, the inner filter paper 56B is wound around the water collecting pipe 62 by two and a half turns.

Now, according to the embodiment of the application example of the present invention having the above-described configuration, the following operational effects can be obtained.
First, the raw water that has entered the housing 58 after removing contaminants by the water passage slit 58a in the cylindrical wall of the housing 58 is filtered by the outer filter paper 56 (see FIG. 3B), and has a cylindrical shape with excellent water permeability. It passes through the support member 54 (see FIG. 3E). Further, the water is further filtered by the inner filter paper 56 </ b> B (see FIG. 7C) and collected from the water collection pipe 62 through the water passage slit 62 a of the water collection pipe 62. That is, the water filtration slit 58a of the housing 58, the outer filter paper 56, and the inner filter paper 56B constitute a triple filtration structure.

  In addition, since the outer filter paper 56 is wound around the cylindrical support member 54 by one and a half turns, the necessary and sufficient filtration capacity can be ensured and the amount of filter paper used can be minimized. In addition, the outer filter paper 56 can be easily attached to and detached from the cylindrical support member 54 when the filter paper of the paper filter 12 is replaced. On the other hand, the inner filter paper 56B is wound around the collecting pipe 62 by two and a half turns, so that the inner filter paper 56B overlaps the inner filter paper 56B in a multiple manner while the amount of use of the inner filter paper 56B is minimized. It is possible to make the apparent fineness of the eyes finer and increase the capture rate of foreign matters by the inner filter paper 56B.

  Further, the inner filter paper 56B, which is longer than the length of the water collecting pipe 62, is folded into the water collecting pipe 62 from the end 62c opposite to the end 62b of the water collecting pipe 62 connected to the opening 60a of the lid 60. The inner filter paper 56 </ b> B is fixed to the water collection pipe 62 by the frictional force generated between the filter paper 56 </ b> B and the water collection pipe 62. Further, the inner filter paper 56B is interposed between the end 62c of the water collecting pipe 62 where the inner filter paper 56B is folded and the bottom plate 84 constituting the inner surface of the bottom of the housing 58, thereby closing the end 62c. Therefore, it is possible to prevent the raw water bypassing the outer filter paper 56 in the housing 58 from directly entering the water collecting pipe 62 from the end 62c.

  Further, a sub pump 74 is connected to an air inflow plug 80 protruding from the outer surface of the bottom of the housing 58 so that air can be fed into the housing 58. The air fed into the housing 58 from the air inflow plug 80 is ejected from an ejection hole 86 provided at a position along at least the inner surface of the cylindrical wall of the housing 58 of the bottom plate 84 constituting the bottom inner surface of the housing 58. By doing so, it becomes possible to remove and clean the foreign matter clogged in the water passage slit 58a of the housing 58 and the outer filter paper 56.

When the water purifier 70 is used, the sub-pump 74 is always connected to the air inflow plug 80 to remove and clean the foreign matter clogged in the water passage slit 58a of the housing 58 of the paper filter 12 and the outer filter paper 56. It is possible to always perform at an appropriate timing. Further, since the air inflow plug 80 is always connected to the sub pump 74, raw water does not inadvertently flow into the housing 58 from the air inflow plug 80. The timing of sending the air into the housing 58 of the paper filter 12 by the sub pump 74 is based on the turbidity of the raw water, but once every 2 to 3 hours and 1 to 2 minutes per time as a guide It becomes.
In addition, about the washing | cleaning means 72 of the paper filter 12, it is employable also in the example shown by FIGS. In addition, detailed description of the same functions and effects as those of the example of FIGS.

The present inventors use, as raw water, a mixture of various suspended substances such as diatomaceous earth and magnesium hydroxide, and river water, similar to the simulated raw water described in Patent Document 1, and uses the purified water according to the embodiment of the present invention. The filtration capacity of the vessel 10 was verified.
As for the amount of purified water, as in the example described in Patent Document 1, about 60 L / hour, the linear velocity (LV) of the paper filter 12 is 26 m ³ / m ² / day, and the LV per water area of the sand filter 16 is 4.5m ³ / ^{m 2} / time, volume rate of sand filter 16 (SV) was approximately ^{45m 3} / ^m 3 / h. The SV of the air layer inside the filter cylinder of the sand filter 16 was 90 m ³ / m ³ / hour.

Under the above conditions, the turbidity removal performance after 10 hours of continuous operation is as follows: pseudo raw water turbidity 102 °, paper filter 12 outlet turbidity 30 °, sand filter 16 outlet turbidity less than 1 °, membrane filter (UF membrane) The turbidity at the outlet of 20 was less than 1 degree, and the same filtration performance as the example described in Patent Document 1 was obtained.
Moreover, also about the stain | pollution | contamination of the filter paper 56 of the paper filter 12 at this time, a mode that the filtration surface supplemented the turbidity uniformly was observed. Further, it was confirmed that there was no trouble in replacing the filter paper 56 even after 10 hours of continuous operation.

10, 70: Water purifier, 12: Paper filter, 14: Pump, 16: Sand filter, 18: Activated carbon filter, 20: Membrane filter, 22: Base, 24: Filtration device assembly, 30, 32: Piping 38: Carrying case, 40: Back strap, 42: Handle, 44: Caster, 54: Cylindrical support member, 54a: Center hole, 56: Filter paper (outer filter paper), 56B: Inner filter paper, 58: Housing, 58a : Water passage slit, 60: Lid, 62: Water collecting pipe, 62a: Water passage slit, 62b, 62c: End, 72: Bottom of housing, 74: Sub pump, 76: Hose, 78: Bottom of housing, 80: Air Inflow plug, 82: sealing plate, 84: bottom plate, 86: ejection hole

Claims (10)

A water filter including a paper filter, an activated carbon filter, a membrane filter, and a pump, and connected by piping connecting these components, is configured to be disassembled into the respective components,
The paper filter includes a porous cylindrical support member;
An outer filter paper wound around the cylindrical support member;
A bottomed cylindrical housing that can be accommodated in a state where the outer filter paper is wound around the cylindrical support member, and a water passage slit formed in a cylindrical wall;
A lid that closes the opening of the housing and has an opening communicating with the interior of the housing at the center;
A water collecting pipe that is detachably connected to the opening from the inside of the lid and is inserted into a central hole of the cylindrical support member and having a water passage slit formed in a pipe wall. Portable water purification kit. The outer filter paper is accommodated in the housing in such a manner that the outer filter paper is longer than the length of the cylindrical support member and is folded from both ends of the cylindrical support member into a central hole. Portable water purification kit. The portable water purification kit according to claim 1 or 2, further comprising an inner filter paper wound around the water collecting pipe. The inner filter paper is wound around the water collection pipe so as to be left at the end opposite to the end of the water collection pipe that is longer than the length of the water collection pipe and connected to the opening of the lid. In an aspect that is folded into the water collecting pipe from the opposite end of the water pipe, the end of the water collecting pipe that is inserted into the central hole of the cylindrical support member and the inner filter paper of the water collecting pipe is folded is The portable water purification kit according to claim 3, wherein the portable water purification kit is in contact with a bottom surface of the housing. The outer filter paper is wound between 1 and 2 layers around the cylindrical support member, and the inner filter paper is wound between 2 and 3 layers around the water collecting pipe. The portable water purification kit according to claim 3 or 4. The outer filter paper and / or the inner filter paper is made of a mixed fiber of pulp and PET, heated and pressurized by a heat roller, the thickness after the treatment is 30 to 70 μm, and the surface is water-repellent. The portable water purification kit according to any one of claims 1 to 5, wherein the portable water purification kit is not provided. An air inflow plug protrudes from the bottom outer surface of the housing, and an ejection hole for ejecting air introduced from the air inflow plug is formed at a position along an inner surface of the bottom wall of the housing at least along the inner surface of the cylindrical wall of the housing. The portable water purification kit according to any one of claims 1 to 6, wherein the portable water purification kit is provided. The portable water purification kit according to claim 7, further comprising a sub pump that is always connected to the air inflow plug. The water filter is configured by connecting the paper filter, the pump, the activated carbon filter, and the membrane filter in this order in series by the pipe. The portable water purification kit according to claim 1. 10. A carry case including at least one of a back strap, a handle, and a caster is housed in a state where a part or all of each component is separated. Portable water purification kit.

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