JP2012035175A - Water purifying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device which can satisfactorily maintain long time purification efficiency, and has excellent maintainability.SOLUTION: On the upstream side of a wing pump 1, the device: a chlorine dioxide feed part 20 feeding chlorine dioxide performing the sterilization of water X introduced with an introduction tube 10; and a first filtering part 30 having a filter medium 31 filtering the water X fed with the chlorine dioxide. On the downstream side of the wing pump 1, the device is provided with a second filtering part 40 having a hollow fiber membrane 41 filtering water Y press-fed from the wing pump 1. Further, when obtaining purified water, the output side of the first filtering part 30 is connected to the suction side of the wing pump 1, and when making washing water flow, a freely switchable switching valve 80 for making the washing water flow from the discharge side of the wing pump 1 to the output side of the first filtering part is used, and further when obtaining purified water, the water is made to flow in the order of the first filtering part, the wing pump 1 and the second filtering part 40, and also in washing, water introduced with the wing pump 1 is made to flow back in the inside of the first filtering part.

Description

The present invention relates to a purification device that purifies water such as rivers, lakes, dams, reservoirs, rainwater, school pools, and irrigation water that cannot be used as drinking water and domestic water as it is to the quality of water that can be used as drinking water and domestic water. In particular, the present invention relates to a water purifier capable of maintaining good purification efficiency for a long time and having excellent maintainability.

When lifelines such as water supply or electricity are cut off due to an emergency such as a disaster, or when it is difficult to receive water supply from the local government, etc., each individual or household will supply drinking water and domestic water on their own. Must be secured.
Patent Document 1 discloses a river that is not suitable as a drink as it is by sterilizing water such as rivers and lakes sucked with a manual pump with calcium hypochlorite and filtering with activated carbon / microfilter. A purification device that purifies water from lakes and lakes to the extent that it can be used as drinking water is provided. The water purifier of this Patent Document 1 is a device in which a filter equipped with a manual pump and a sterilizer is attached to a portable frame, and can be carried by one person to water sources such as rivers and lakes. The pump can be driven even when there is no electric power. That is, Patent Document 1 discloses a technology that can secure drinking water using water from rivers, lakes and marshes even when lifelines such as water supply, electric power, and transportation are completely cut off. .

Japanese Patent Laid-Open No. 9-220567

However, in the water purification apparatus of Patent Document 1, a filter for removing small particulates / powder such as dust and sand contained in rivers and lakes is disposed downstream of the manual pump. For this reason, there is a problem in that the granular material / powdered material is sucked and adhered to the pump, and functions such as suction force and discharge force of the pump are reduced in a short time.
Moreover, in patent document 1, since the position of the sterilizer is not specified, the case where a sterilizer is arrange | positioned in the downstream of a membrane filtration apparatus is assumed, for example. In such a case, since a large burden is imposed on a membrane filtration device such as a hollow fiber membrane that removes bacteria by filtration, the membrane filtration device may be clogged in a short time, and the membrane filtration efficiency may be reduced.
That is, the water purification apparatus of Patent Document 1 is not practical because it tends to cause a reduction in purification efficiency and must be frequently maintained.

Then, this invention is made | formed in order to solve such a malfunction, and makes it a subject to provide the water purifier which can maintain purification efficiency favorably for a long time, and was excellent in maintainability.

The water purifier according to the invention of claim 1 introduces water from a water source by suction of the reciprocating pump to the upstream side of a manually driven reciprocating pump that sucks water and pumps the sucked water. And removing the impurities that reduce the load on the next filtration unit contained in the water supplied with chlorine dioxide, chlorine dioxide supply unit that supplies chlorine dioxide to sterilize the water introduced in the introduction unit, A first filtering section having a filtering material for reducing the chlorine dioxide content, and filtering the water pumped from the reciprocating pump downstream of the reciprocating pump. A second filtration that has a hollow fiber membrane that removes finer impurities than the filter material of the part, and removes impurities having a maximum length or diameter of 0.1 μm or more, for example, contained in water pumped from the reciprocating pump To obtain clean water At the time, the first filtration part, the reciprocating pump, and the second filtration part are supplied with water in this order, and at the time of cleaning, the first filtration part is used by the water guided to the reciprocating pump. The washing | cleaning means which reversely flows the inside of the filtration part of this is comprised.

By the way, the reciprocating pump is configured to suck a fluid such as water in the volume space by changing the volume of a fluid such as water in a fixed space volume by a reciprocating motion of a piston or a blade. The suctioned fluid such as water is pumped. The human-powered type means that the piston or the wing plate is reciprocated manually or by a stepping operation. As the human-powered reciprocating pump, a wing pump, a piston pump / plunger pump (hand pump), a diaphragm pump, or the like is usually employed.

The introduction part introduces water from a water source by suction of the reciprocating pump, and a tubular body such as a hose is usually used. In addition, the said pressure resistant body which can prevent the deformation | transformation by the suction | inhalation of the said human-powered reciprocating pump is used for the said pipe body.
Moreover, the said water source means the supply source of the water purified with the water purifier of this invention. In the event of an emergency such as a disaster, rivers, lakes, dams, reservoirs, pools, irrigation canals, sewers, rainwater, etc. are targeted as water sources.

The chlorine dioxide supply part supplies chlorine dioxide for sterilizing the water introduced in the introduction part to the water introduced in the introduction part, and the chlorine dioxide can be mixed into the water introduced in the introduction part. If possible, chlorine dioxide may be supplied in the form of a solution, or in the form of a solid containing powder, or for example, a chlorine dioxide generator that generates chlorine dioxide by dissolving in water.

The first filtration unit prevents impurities contained in the water supplied with the chlorine dioxide, for example, the passage of particulate matter / powder such as sand and dust. As long as the load of the hollow fiber membrane of the filtration part 2 can be reduced and the content of the chlorine dioxide can be reduced, usually granular activated carbon, fibrous activated carbon, ceramics, ion exchange resin, ion exchange Filter materials such as fibers and non-woven fabrics are used. Further, two or more kinds of filter media may be used in appropriate combination, and the filter media are usually used in a cartridge. In addition, when using multiple types of filter media of different types and shapes, in order to perform efficient filtration, water from the introduction section should pass in order from the filter media having a low filtration performance to the filter media having a high filtration performance. It is desirable to arrange the filter medium in

In addition, the second filtration unit includes at least a maximum length or an impurity having a diameter of 0.1 μm or more contained in water pumped from the reciprocating pump, mainly particulate harmful substances, bacteria, iron rust, turbidity In order to remove components and the like, a hollow fiber membrane which is a hollow fiber-like ultra-micro filter having a hole of about 0.1 μm formed on the outer peripheral surface is usually used. The hollow fiber membrane is an internal pressure type in which the inside of the hollow fiber membrane is the permeate side and the outside of the hollow fiber membrane is the permeate side, or the inside of the hollow fiber membrane is the permeate side and the outside of the hollow fiber membrane is the permeate liquid. Either of the external pressure type on the side may be used. The hollow fiber membrane is usually made of a material such as polyacrylonitrile, polyvinylidene fluoride, polyethylene, polysulfone, polyvinyl alcohol, or polyphenylene sulfone.

And the object of removing impurities contained in the water pumped from the reciprocating pump is the meaning that the maximum length or diameter is 0.1 μm or more because the object is the ability of the filter. The diameter is defined as 0.1 μm or more. Therefore, it does not mean the average particle diameter, but means the outer diameter of impurities that do not pass through pores having a diameter of less than 0.1 μm. Since the impurities are irregular, impurities smaller than 10% may not pass through holes having a diameter of less than 0.1 μm. Therefore, since the length of impurities that do not pass through holes with a diameter less than 0.1 μm is also a requirement, the maximum length or the removal of impurities with a diameter of 0.1 μm or more is defined as a rule when carrying out the present invention. It is. It is not a numerical value that accurately discusses 0.1 μm.

Further, when the cleaning means obtains purified water, the first filtration part, the reciprocating pump, and the second filtration part flow in the main order, and when cleaning, The inside of the first filtration unit is caused to flow backward with respect to the direction in which the purified water is obtained by the water guided to the reciprocating pump, and only the first filtration unit to be washed is caused to flow backward and is washed. .

The water purifier according to the invention of claim 2 introduces water from a water source by suction of the reciprocating pump to the upstream side of a manually driven reciprocating pump that sucks water and pumps the sucked water. And removing the impurities that reduce the load on the next filtration unit contained in the water supplied with chlorine dioxide, chlorine dioxide supply unit that supplies chlorine dioxide to sterilize the water introduced in the introduction unit, A first filtering section having a filtering material for reducing the chlorine dioxide content, and filtering the water pumped from the reciprocating pump downstream of the reciprocating pump. A second filtration unit that has a hollow fiber membrane that removes finer impurities than the filtration material of the part, and that removes at least a maximum length or a diameter of 0.1 μm or more contained in water pumped from the reciprocating pump Install and get purified water At the time, water flows in the order of the first filtering unit, the reciprocating pump, and the second filtering unit, and at the time of cleaning, the reciprocating pump guides the water to the second filtering unit. Washing means for backflowing the inside of the second filtration unit with the water that has been placed is provided.
Here, each component is the same as that of Claim 1. To explain only the different constituent elements, the cleaning means flows water in the order of the first filtration unit, the reciprocating pump, and the second filtration unit when obtaining purified water. In this case, the water led to the second filtration unit by the reciprocating pump causes the inside of the second filtration unit to flow backward in the direction in which the purified water is obtained.

The cleaning unit of the water purification apparatus according to the invention of claim 3 connects the output side of the first filtration unit to the suction side of the reciprocating pump when obtaining purified water, and the reciprocating motion when flowing the cleaning water. A switchable switching valve that flows from the discharge side of the pump to the output side of the first filtration unit is provided.
Here, the switching valve switches from a state in which purified water is obtained to a state in which washing water is flowed, that is, a state in which the water is flowed from the discharge side of the reciprocating pump to the output side of the first filtration unit. And even if the setting condition when flowing purified water or flowing wash water is unknown, it can be used without increasing the load of the reciprocating pump if the switching valve is set to any one. In addition, the switching is performed so that no human error is involved.
In addition, the said washing water means the water which wash | cleans a said 1st filtration part, and when implementing this invention, the obtained purified water can also be used as washing water.

When the cleaning means of the water purification apparatus according to the invention of claim 4 obtains purified water, the output side of the first filtration unit is connected to the suction side of the reciprocating pump, and the discharge side of the reciprocating pump is connected to the discharge side. When the input side of the second filtration unit is connected and the washing water is allowed to flow, the output side of the second filtration unit from the discharge side of the reciprocating pump and the output of the first filtration unit from the output side thereof A switchable switching valve that flows to the side is provided.
Here, the switching valve is in a state in which cleaning water flows from a state in which purified water is obtained, that is, from the discharge side of the reciprocating pump to the input side of the second filtration unit, and from the output side to the first filtration unit. Is switched to the state of flowing to the output side. And even if the setting condition when flowing purified water or flowing wash water is unknown, it can be used without increasing the load of the reciprocating pump if the switching valve is set to any one. In addition, the switching is performed so that no human error is involved.
In addition, the said washing water means the water which wash | cleans a said 1st filtration part, and when implementing this invention, the obtained purified water can also be used as washing water.

When the cleaning means of the water purification apparatus according to the invention of claim 5 obtains purified water, the output side of the first filtration unit is connected to the suction side of the reciprocating pump, and the discharge of the reciprocating pump is performed. When the washing water is made to flow, the suction side of the reciprocating pump is connected to the input side of the second filtration unit, and the reciprocation is performed. It connects to the output side of the said 1st filtration part from the discharge side of a dynamic pump, and flows washing water there.
Here, the cleaning means connects the input side of the second filtration unit to the suction side of the reciprocating pump and performs the cleaning from the discharge side of the manually driven reciprocating pump. It is connected to the output side of the first filtration unit and allows washing water to flow.
In addition, the said washing water means the water which wash | cleans a said 2nd filtration part and a 1st filtration part, and when implementing this invention, the obtained purified water is used as washing water. You can also

According to the water purifier of the first aspect of the present invention, the introduction of introducing water from the water source by suction of the reciprocating pump to the upstream side of the manually driven reciprocating pump that sucks water and pumps the sucked water. And removing impurities that reduce the load on the next filtration unit contained in the water supplied with chlorine dioxide, and a chlorine dioxide supply unit that supplies chlorine dioxide for sterilizing water introduced in the introduction unit Since the first filtering part having a filtering material for reducing the chlorine dioxide content is disposed, when the reciprocating pump is driven manually, the introduction part introduces water from the water source. The water introduced in the introduction part is sterilized with chlorine dioxide supplied in the chlorine dioxide supply part, and further, after removing relatively large impurities in the first filtration part, it is supplied to the reciprocating pump. Inhaled.
In addition, a hollow fiber membrane for removing impurities finer than the filter medium of the first filtration unit that filters water pumped from the reciprocating pump is provided downstream of the reciprocating pump, Since the second filtration unit that removes impurities having a maximum length or a diameter of 0.1 μm or more contained in the pumped water is disposed, the pumped water from the reciprocating pump is For example, impurities having a maximum length or a diameter of 0.1 μm or more are removed from the hollow fiber membrane of the filtration unit.

Therefore, particulate matter and sludge that cause clogging of the pump are removed by the first filtration unit, and particulate matter and sludge that cause clogging of the pump do not directly enter the reciprocating pump. Even when used for a long time, the reciprocating pump is not clogged, and functions such as suction force and discharge force of the reciprocating pump are maintained for a long time.

Further, prior to filtration by the hollow fiber membrane of the second filtration unit, that is, sterilization, supply of chlorine dioxide by the chlorine dioxide supply unit is performed, and from the water source at a stage before filtration of the second filtration unit. Since the bacteria contained in the water is reduced, the burden on the hollow fiber membrane of the second filtration part can be reduced. In addition, sterilization with chlorine dioxide can achieve high sterilization power and residual effect even at low concentrations compared to sterilization with hypochlorous acid, which is the mainstream of water sterilization. Compared with, the burden of the hollow fiber membrane of the 2nd filtration part can be reduced more.
In addition, chlorine dioxide is supplied by the chlorine dioxide supply unit prior to filtration by the filter medium of the first filtration unit, and the first filtration is performed as compared with the case of supplying chlorine dioxide after filtration. Since the adhesion of bacteria to the part is reduced, it is possible to reduce the growth of bacteria in the first filtration part when the water flow is stopped for several hours after use. Therefore, the increase in the burden of the hollow fiber membrane of the 2nd filtration part by the water containing the bacteria propagated by the 1st filtration part at the time of resuming water flow reaching | attaining a 2nd filtration part can be reduced.

In addition, the water purifier according to the first aspect of the present invention flows water in the order of the first filtration unit, the reciprocating pump, and the second filtration unit when obtaining purified water. Includes a cleaning means for backflowing the inside of the first filtration unit with water guided to the reciprocating pump, and the reciprocating operation is performed without removing the filter medium of the first filtration unit. The first filtration unit is cleaned using the pressure of the pump. Therefore, the filtration performance can be recovered easily and efficiently by reducing the clogging of the filtration material of the first filtration part. Furthermore, the apparatus can be reduced in weight because a pump dedicated to cleaning is not required.
Therefore, the filtration efficiency in the first filtration unit can be maintained well for a long time, and the filter medium of the first filtration unit can be made long lasting.

Thus, since the 1st filtration part is arrange | positioned in the upstream of the human-powered reciprocating pump, the water purifier of invention of Claim 1 does not clog a reciprocating pump. In addition, since a reciprocating pump excellent in suction and pushing-up force is used as a pump that sucks water and pumps the sucked water, the first filtration section that causes pressure loss is arranged upstream of the reciprocating pump. Even if installed, sufficient purification efficiency can be obtained. Furthermore, even when the pressure loss has increased due to clogging of the first filtration unit, the filtration performance of the first filtration unit can be recovered, and the filtration efficiency in the first filtration unit is maintained well for a long time. It is possible. In addition, since the burden on the second filtration unit is designed to be reduced, the filtration efficiency in the second filtration unit can be maintained well for a long time.
Therefore, according to the water purifier of the invention of the first aspect, the purification efficiency can be maintained well for a long time, and the maintainability can be improved.

According to the water purifier of the invention of claim 2, introduction of introducing water from a water source by suction of the reciprocating pump to the upstream side of a manually driven reciprocating pump that sucks water and pumps the sucked water. And removing impurities that reduce the load on the next filtration unit contained in the water supplied with chlorine dioxide, and a chlorine dioxide supply unit that supplies chlorine dioxide for sterilizing water introduced in the introduction unit Since the first filtering part having a filtering material for reducing the chlorine dioxide content is disposed, when the reciprocating pump is driven manually, the introduction part introduces water from the water source. The water introduced in the introduction part is sterilized with chlorine dioxide supplied in the chlorine dioxide supply part, and further, after removing relatively large impurities in the first filtration part, it is supplied to the reciprocating pump. Inhaled.
In addition, a hollow fiber membrane for removing impurities finer than the filter medium of the first filtration unit that filters water pumped from the reciprocating pump is provided downstream of the reciprocating pump, Since the second filtration unit that removes impurities having at least the maximum length or diameter of 0.1 μm or more contained in the pumped water is disposed, the pumped water is supplied from the reciprocating pump. For example, impurities having a maximum length or a diameter of 0.1 μm or more are removed from the hollow fiber membrane of the portion.

Therefore, particulate matter and sludge that cause clogging of the pump are removed by the first filtration unit, and particulate matter and sludge that cause clogging of the pump do not directly enter the reciprocating pump. Even when used for a long time, the reciprocating pump is not clogged, and functions such as suction force and discharge force of the reciprocating pump are maintained for a long time.

Further, prior to filtration by the hollow fiber membrane of the second filtration unit, that is, sterilization, supply of chlorine dioxide by the chlorine dioxide supply unit is performed, and from the water source at a stage before filtration of the second filtration unit. Since the bacteria contained in the water is reduced, the burden on the hollow fiber membrane of the second filtration part can be reduced. In addition, sterilization with chlorine dioxide can achieve high sterilization power and residual effect even at low concentrations compared to sterilization with hypochlorous acid, which is the mainstream of water sterilization. Compared with, the burden of the hollow fiber membrane of the 2nd filtration part can be reduced more.
In addition, chlorine dioxide is supplied by the chlorine dioxide supply unit prior to filtration by the filter medium of the first filtration unit, and the first filtration is performed as compared with the case of supplying chlorine dioxide after filtration. Since the adhesion of bacteria to the part is reduced, it is possible to reduce the growth of bacteria in the first filtration part when the water flow is stopped for several hours after use. Therefore, the increase in the burden of the hollow fiber membrane of the 2nd filtration part by the water containing the bacteria propagated by the 1st filtration part at the time of resuming water flow reaching | attaining a 2nd filtration part can be reduced.

In addition, the water purifier according to the invention of claim 2 flows water in the order of the first filtration unit, the reciprocating pump, and the second filtration unit when obtaining purified water. Comprises a cleaning means for backflowing the inside of the second filtration part by the water guided to the second filtration part by the reciprocating pump, and the hollow fiber membrane of the second filtration part The second filtration unit is cleaned using the pressure of the reciprocating pump without removing the filter. Therefore, the filtration performance can be recovered easily and efficiently by reducing clogging of the hollow fiber membrane of the second filtration part. Furthermore, the apparatus can be reduced in weight because a pump dedicated to cleaning is not required.
Therefore, the filtration efficiency in the second filtration part can be maintained well for a long time, and the hollow fiber membrane of the second filtration part can be prolonged.

Thus, since the 1st filtration part has been arrange | positioned in the upstream of the human-powered reciprocating pump, the water purifier of invention of Claim 2 does not clog a reciprocating pump. In addition, since a reciprocating pump excellent in suction and pushing-up force is used as a pump that sucks water and pumps the sucked water, the first filtration section that causes pressure loss is arranged upstream of the reciprocating pump. Even if installed, sufficient purification efficiency can be obtained. In addition, it is designed to reduce the burden on the second filtration unit, and further, the filtration performance of the second filtration unit can be recovered, so that the filtration efficiency in the second filtration unit is increased. Good time can be maintained.
Therefore, according to the water purifier of the invention of claim 2, the purification efficiency can be maintained well for a long time, and the maintainability can be improved.

According to the water purification apparatus of the third aspect of the invention, when the cleaning means obtains purified water, the output side of the first filtration unit is connected to the suction side of the reciprocating pump and the cleaning water flows. Is provided with a switching valve that can be switched from the discharge side of the reciprocating pump to the output side of the first filtration unit, and when obtaining purified water by switching operation of the switching valve, Water flows in the order of the first filtration unit, the reciprocating pump, and the second filtration unit, and the inside of the first filtration unit is washed by water guided to the reciprocating pump during cleaning. Is to reverse flow. Therefore, in addition to the effect of the first aspect, switching between water purification and washing can be performed with a simple operation. Further, if the switching valve is used, even if the entire operation is mistaken, the switching valve is not closed, so there is no possibility that the load on the reciprocating pump becomes excessive. Further, during cleaning, water guided to the reciprocating pump is allowed to flow from the discharge side of the reciprocating pump to the output side of the first filtering unit without passing through the second filtering unit. Therefore, it is possible to prevent the wasteful use of the second filtration unit because it can be made to flow back into the first filtration unit.

  According to the water purifier of the invention of claim 4, when the cleaning means obtains purified water, the output side of the first filtration unit is connected to the suction side of the reciprocating pump, and the reciprocating pump When the input side of the second filtration unit is connected to the discharge side and the washing water flows, the discharge side of the reciprocating pump is connected to the input side of the second filtration unit, and the output side is connected to the second side. The first switching unit, the reciprocating pump, the first reciprocating pump, and the second reciprocating pump are provided in order to obtain purified water by switching operation of the switching valve. Water is made to flow in the order of the two filtration units, and when washing, the inside of the first filtration unit is caused to flow backward by the water guided to the reciprocating pump. Therefore, in addition to the effect of the first aspect, switching between water purification and washing can be performed with a simple operation. Further, if the switching valve is used, even if the entire operation is mistaken, the switching valve is not closed, so there is no possibility that the load on the reciprocating pump becomes excessive.

According to the water purification apparatus of the fifth aspect of the present invention, when the cleaning means obtains purified water, the output side of the first filtration unit is connected to the suction side of the reciprocating pump, and the reciprocating motion is performed. By connecting the input side of the second filtration unit to the discharge side of the pump, water flows in the order of the first filtration unit, the reciprocating pump, and the second filtration unit, and the washing water flows. The suction side of the reciprocating pump is connected to the input side of the second filtration unit, and the discharge side of the reciprocating pump is connected to the output side of the first filtration unit, By flowing the washing water, the water guided to the second filtration unit by the reciprocating pump is caused to flow back into the second filtration unit and then back into the first filtration unit. Is. Therefore, in addition to the effect of the second aspect, it is possible to reduce the clogging of the filtering material of the first filtering unit and restore the filtering performance, and to maintain the purification efficiency better for a long time. it can. In addition, the filter medium of the first filter section can be made long lasting.

FIG. 1 is a fluid circuit diagram showing an overall schematic configuration of the water purifier according to Embodiment 1 of the present invention during water purification, and is a fluid circuit diagram for discharging purified water from a first discharge unit. FIG. 2 is a fluid circuit diagram showing an overall schematic configuration of the water purifier according to Embodiment 1 of the present invention during water purification, and is a fluid circuit diagram for discharging purified water from a second discharge part. FIG. 3 is a fluid circuit diagram showing an overall schematic configuration during cleaning of the first filtration unit of the water purifier according to Embodiment 1 of the present invention, and is a fluid circuit diagram through which cleaning water passes through the first discharge unit. . FIG. 4 is a fluid circuit diagram showing an overall schematic configuration during cleaning of the first filtration unit of the water purifier according to Embodiment 1 of the present invention, and is a fluid circuit diagram through which cleaning water passes through the second discharge unit. . FIG. 5 is a front view of the water purifier according to Embodiment 1 of the present invention. FIG. 6 is a right side view of the water purifier according to Embodiment 1 of the present invention. FIG. 7 is a front view of the strainer of the water purifier according to Embodiment 1 of the present invention. FIG. 8 is an enlarged cross-sectional view of a main part for explaining the chlorine dioxide supply part and the first filtration part of the water purifier according to Embodiment 1 of the present invention. FIG. 9 is an explanatory diagram for explaining the second filtration unit and its peripheral part of the water purifier according to Embodiment 1 of the present invention, (a) is a plan view of the second filtration part and its peripheral part, (B) is a front sectional view of the second filtration part and its peripheral part taken along the line AA of (a), and (c) is a second filtration part and its peripheral part taken along the line BB of (a). (D) is a left side cross-sectional view of the second filtration part and its peripheral part taken along the CC section of (a). FIG. 10 is an explanatory diagram for explaining the cleaning means of the water purification apparatus according to Embodiment 1 of the present invention. (A) Right side view of the appearance of the water purification apparatus according to Embodiment 1 of the present invention, (b) The right side sectional view of the switching valve at the time of water purification of the water purification apparatus according to Embodiment 1 of the invention, (c) is the right side view of the switching valve at the time of water purification of the water purification apparatus according to Embodiment 1 of the present invention, (d) is The right side sectional view of the switching valve at the time of washing the first filtration part of the water purification apparatus according to Embodiment 1 of the present invention, (e) is the washing of the first filtration part of the water purification apparatus according to Embodiment 1 of the present invention. It is a right view of the switching valve at the time. FIG. 11 is an explanatory view for explaining a modification of the switching valve as a cleaning means of the water purifier according to Embodiment 1 of the present invention, and (a) is a sectional view (b) of the switching valve at the time of water purification. It is sectional drawing of the switching valve at the time of washing | cleaning of a 1st filtration part. FIG. 12 is an explanatory diagram for describing a modification of the gantry frame of the water purifier according to Embodiment 1 of the present invention. FIG. 13: is a fluid circuit diagram which shows the whole schematic structure at the time of the water purification of the water purification apparatus of Embodiment 2 of this invention, and is a fluid circuit diagram which discharges purified water from a 1st discharge part. FIG. 14: is a fluid circuit diagram which shows the whole schematic structure at the time of water purification of the water purifier of Embodiment 2 of this invention, and is a fluid circuit diagram which discharges purified water from a 2nd discharge part. FIG. 15 is a fluid circuit diagram showing an overall schematic configuration during cleaning of the first filtration unit of the water purifier according to Embodiment 2 of the present invention, and is a fluid circuit diagram through which the cleaning water passes through the first discharge unit. . FIG. 16 is a fluid circuit diagram showing an overall schematic configuration during cleaning of the first filtration unit of the water purifier according to Embodiment 2 of the present invention, and is a fluid circuit diagram through which the cleaning water passes through the second discharge unit. . Fig. 17 (a) is a front sectional view of the switching valve when using the second filtration part of the water purification device according to the second embodiment of the present invention, and Fig. 17 (b) is a water purification device according to the second embodiment of the present invention. FIG. 17 (c) is a front view of the switching valve when using the second filtration part and its peripheral part, and FIG. 17 (c) shows the switching valve when not using the second filtration part of the water purifier according to Embodiment 2 of the present invention. FIG. 17 (d) is a front view of the switching valve and its surroundings when the second filtration unit of Embodiment 2 of the present invention is not used. FIG. 18 shows the operation part of the switching valve when the second filtration unit 40 of the water purification apparatus according to Embodiment 2 of the present invention is used and when it is not used, and the switching between the purification unit and the cleaning of the first filtration unit. It is a correspondence table | surface with the operation part (cleaning means) of a valve. FIG. 19 is a fluid circuit diagram showing an overall schematic configuration of the water purifier according to Embodiment 3 of the present invention during water purification, and is a fluid circuit diagram for discharging purified water from the first discharge unit. FIG. 20 is a fluid circuit diagram illustrating an overall schematic configuration of the water purifier according to Embodiment 3 of the present invention during water purification, and is a fluid circuit diagram for discharging purified water from the second discharge unit. FIG. 21 is a fluid circuit diagram showing an overall schematic configuration during cleaning of the first filtration unit of the water purifier according to Embodiment 3 of the present invention, and is a fluid circuit diagram in which the cleaning water flows backward from the first discharge unit. is there. FIG. 22 is a fluid circuit diagram showing an overall schematic configuration during cleaning of the first filtration unit of the water purifier according to Embodiment 3 of the present invention, and is a fluid circuit diagram in which the cleaning water flows backward from the second discharge unit. is there. FIG. 23 is an explanatory diagram for explaining the cleaning means according to the third embodiment of the present invention. (A) is a cross-sectional view of the switching valve at the time of water purification according to the third embodiment of the present invention, and (b) is the present figure. It is sectional drawing of the switching valve at the time of washing | cleaning of Embodiment 3 of invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In each embodiment, the same symbol and the same reference sign mean the same or corresponding functional part, and the same sign and the same reference sign in the respective embodiments are the functional parts common to those embodiments. Therefore, the detailed description which overlaps is abbreviate | omitted here.

[Embodiment 1]
First, a water purifier according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 12.
As shown in FIGS. 1 to 6, the water purifier of the first embodiment has a wing pump 1 as a human-powered reciprocating pump that sucks water W from a water source and pumps the sucked water W. is doing.
And the water purifier 1 of this Embodiment is connected to the introduction pipe 10 as an introduction part which introduces the water X from the water source by the suction of the wing pump 1 on the upstream side of the wing pump 1, and the introduction pipe 10. A chlorine dioxide supply unit 20 that supplies chlorine dioxide for sterilizing the water X introduced through the pipe 10 and a filter medium 31 that is disposed downstream of the chlorine dioxide supply unit 20 and filters the water X supplied with chlorine dioxide. The 1st filtration part 30 which has is provided.
1 to 4, the water source is a source of water W to be purified by the water purifier according to the first embodiment. In an emergency such as a disaster, a river, a lake, a dam, a reservoir, a pool, and a water channel Water W such as sewers and rainwater is used as a water source.

The wing pump 1 according to the first embodiment manually rotates a handle 1a attached to the front face in the direction of the arrow in FIG. 4 and reciprocates an internal blade (not shown) in a seesaw shape. The water W is sucked from the water or the sucked water W is pumped.
In addition, the introduction pipe 10 of the first embodiment is configured by a pressure-resistant hose for a pump.
The introduction pipe 10 is connected to the suction port side (the lower side in the figure) of the wing pump 1 through a chlorine dioxide supply unit 20, a first filtration unit 30, a pipe 34 and a switching valve 80 which will be described later. Yes.
Therefore, when the tip of the introduction pipe 10 is put into a water source and the handle 1a of the wing pump 1 is rotated, the water W as the water source is first introduced into the introduction pipe 10 by the suction of the wing pump 1.

Here, at the tip of the introduction pipe 10 of the first embodiment, mud, leaves of the tree included in the water W of the water source by separating the introduction port 10a (FIG. 7) of the introduction pipe 10 from the bottom of the water by a predetermined distance. A strainer 11 is attached to prevent relatively large foreign matters such as pebbles from being sucked into the inlet 10a (FIG. 7) of the inlet tube 10.
Specifically, the strainer 11 according to the first embodiment is provided with a bottomed cylindrical wire mesh rod 11a and an upper portion inside the wire mesh rod 11a as shown in FIG. And a metal scrubbing filter 11b formed and entangled with each other, and a bottomed cylindrical metal filter 11c having a large number of small holes disposed in the wire mesh rod 11a. It is fitted to the inlet 10a of the inlet pipe 10 through the inlet pipe attachment opening 11A formed in the above.
Therefore, in the water purifier of the first embodiment, relatively large foreign matters such as mud, leaves, pebbles and the like contained in the water W of the water source are clogged in the inlet 10a of the introduction pipe 10, and the purification efficiency is extremely reduced. Absent.
In addition, since the strainer 11 of this Embodiment 1 is immersed in the water W of a water source, it is comprised with a rust-resistant metal material, such as stainless steel, aluminum, and zinc, but when implementing this invention, It is only necessary to prevent relatively large foreign matter such as mud, leaves, pebbles and the like contained in the water W of the water source from being sucked into the introduction pipe 10, and may be formed by, for example, a cloth, a net, a sponge filter, or the like. A commercially available strainer for a pump may be used.

Further, the other end of the introduction tube 10, that is, the opposite side of the introduction port 10a (FIG. 7), as shown in FIG. 6, is a filter constituting the first filtration unit 30 via the introduction tube attachment port portion 33A. It is connected to a pipe 33 </ b> B disposed at the upper part of the housing 33.
The pipe 33 </ b> B connects the introduction pipe 10 and the chlorine dioxide supply unit 20 disposed near the center of the upper end in the filter housing 33 to guide the water X from the introduction pipe 10 into the chlorine dioxide supply unit 20. In Embodiment 1, after passing through the casing 22 constituting the chlorine dioxide supply unit 20 from the outside to the inside, the tip is bent upward in the chlorine dioxide supply unit 20.
Therefore, the water X introduced into the introduction pipe 10 is discharged upward in the chlorine dioxide supply unit 20 through the pipe 33B. In the first embodiment, the introduction pipe 10 is detachable from the filter housing 33 by being screwed into the introduction pipe attachment port portion 33A. Further, the pipe 33B and the filter housing 33, and the pipe 33B and the casing 22 are joined to each other without a gap by welding.

Here, as shown in FIG. 8, the chlorine dioxide supply unit 20 of the first embodiment includes a particulate chlorine dioxide generator 21 that generates chlorine dioxide by being dissolved in water X, and a chlorine dioxide generator 21. Is formed of a casing 22 having a substantially U-shaped cross-section formed so as to be able to accommodate the lid, and a lid body 23 that can be screwed to the casing 22.
The supply amount of the chlorine dioxide generating agent 21 is set according to the type of the water W as the water source. Moreover, as the chlorine dioxide generating agent 21 which generates chlorine dioxide by dissolving in water X, a commercially available drug (for example, Crawlin O2 tablet (trade name) manufactured by Saber Oxidation Technology) can be used.

The casing 22 accommodates the chlorine dioxide generating agent 21, and an opening 22 b serving as a supply port for supplying the chlorine dioxide generating agent 21 is formed in the upper part of the casing 22. In addition, a female screw portion 22c corresponding to a male screw portion 23a of the lid body 23 described later is formed around the opening 22b. And the bottom part 22a of the casing formed in the curved surface side with a substantially U-shaped cross section is a mesh in which many predetermined small holes are formed.
Note that the casing 22 of the first embodiment is joined to the upper surface portion of the filter housing 33 by welding. Moreover, when implementing this invention, if the casing 22 is a shape which can accommodate the chlorine dioxide generating agent 21, it will not be limited to the shape of the said Embodiment 1, For example, a bottomed cylindrical shape It can also be. Furthermore, when practicing the present invention, the bottom 22a of the casing 22 can be formed in a slit shape as long as it allows the passage of the water X inside and outside the casing 22.

  The lid body 23 covers the opening 22b of the casing 22, and is made of a synthetic resin material such as a transparent glass material or plastic. In addition, a male screw portion 23 a that can be screwed into the female screw portion of the casing 22 is formed in the lower portion of the lid body 23.

As shown in FIG. 8, in a normal use state, the male screw portion 23 a of the lid body 23 is screwed to the female screw portion 22 c of the casing 22, and the opening portion 22 b of the casing 22 is sealed by the lid body 23. It has become so. In particular, in the first embodiment, since a rubber packing (not shown) is interposed between the casing 22 and the lid 23 in a close contact state, the inside of the chlorine dioxide supply unit 20 is in a highly airtight state. can do.
In the case of carrying out the present invention, if the opening 22b of the casing 22 can be freely opened and closed by the lid 23, the invention is not limited to the screwing type of the lid 23 into the casing 22, for example, It can be a butterfly type or a fitting type.

  For this reason, the water X injected from the pipe 33B flows through the mesh of the bottom 22a of the casing 22 after flowing into contact with the chlorine dioxide generating agent 21 without leaking to the outside, and passes through the mesh of the mesh formed on the bottom 22a of the casing 22. It flows toward the cartridge 32. When the water X is in fluid contact with the chlorine dioxide generator 21, the chlorine dioxide generator 21 is dissolved in the water X, so that chlorine dioxide is supplied to the water X.

In particular, in the first embodiment, since the water X from the introduction pipe 10 is discharged upward by the pipe 33B, the water X injected from the pipe 33B has a large vortex in the chlorine dioxide supply unit 20. It flows while. Therefore, since the contact time between the water X and the chlorine dioxide generating agent 21 is longer and the contact degree is larger than when the water X from the introduction pipe 10 is discharged downward or sideways, a large amount of chlorine dioxide is contained in the water X. To be supplied.
In addition, as shown in FIG. 8, since the mesh-shaped bottom portion 22 a on which the chlorine dioxide generating agent 21 is installed is disposed in the filter housing 33 constituting the first filtration portion 30, the filter medium 31. The chlorine dioxide generator 21 is dissolved in the remaining water X before passing through the water, and more chlorine dioxide is supplied to the water X.
It should be noted that the mesh size is preferably set larger than the size of particles such as sand that are not removed by the strainer 11 so that the mesh applied to the bottom 22a of the casing 22 is not clogged. Further, in order to further dissolve the chlorine dioxide generator 21 in the water X staying in the filter housing 33, and in order to make the chlorine dioxide concentration in the filter housing 33 more uniform, the chlorine dioxide generator 20 is disposed in the vicinity of the chlorine dioxide supply unit 20. A stirrer may be provided.

  In the first embodiment, chlorine dioxide is supplied in the form of a tablet called the dioxide generator 21, but when the present invention is carried out, chlorine dioxide is supplied to the water X from the introduction pipe 10. If possible, for example, the chlorine dioxide supply unit 20 introduces the chlorine dioxide aqueous solution having a predetermined concentration, a casing made of a transparent material containing the chlorine dioxide aqueous solution, and the chlorine dioxide aqueous solution contained in the casing through the introduction pipe 10. It is also possible to supply chlorine dioxide in the form of an aqueous chlorine dioxide solution. This facilitates the adjustment of the concentration of supplied chlorine dioxide.

In addition, as shown in FIG. 8, the first filtration unit 30 of the first embodiment passes impurities contained in the water X from the introduction pipe 10, for example, particulate matter / powder such as sand and dust. The filter medium cartridge 32 stores the filter medium 31 that prevents the filter medium 33 and the filter housing 33 that stores the filter medium cartridge 32 and the casing 22.
The first filtration unit 30 includes at least impurities having a maximum length or a particle diameter of 1 to 10 μm or more contained in the water X from the introduction pipe 10, for example, particulate matter / powder such as sand and dust. In principle, it is desirable to remove those having a maximum length or diameter of about 0.1 μm, but may be 0.2 μm, 0.5 μm, or 1 μm. However, the first filtration unit 30 can extend the life of the second filtration unit 40 by removing at least impurities contained in the water X having a maximum particle diameter or a particle diameter of 1 μm or more. That is, the 1st filtration part 30 reduces the burden of the 2nd filtration part 40, and is set with the kind of the water W of the water source.

The filter cartridge 32 according to the first embodiment is formed by cylindrically forming a filter medium 31 made of any one or more of silver-impregnated activated carbon, ceramics, and ion exchange resin, and water X in the radial direction. A flow path 32a is formed in the interior of the flow passage 32a for allowing the water Y that has passed through the filter medium 31 to flow out from an outflow portion 33C formed at the lower end of the filter housing 33 described later. Yes. Further, end caps 32b and 32c are provided at both upper and lower ends of the filter cartridge 32, and the end caps 32b and 32c prevent water X from entering the flow path 32a from both end surfaces. Furthermore, the lower end of the end cap 32 c is formed with a male screw portion 32 d that is screwed with a female screw portion 33 D formed near the outflow portion 33 C of the filter housing 33, so that the filter cartridge 32 can be mounted on the filter housing 33. It has become.
Silver-impregnated activated carbon removes chlorine, musty odors, nonionic impurities, agricultural chemicals, etc., as long as silver is attached to give antibacterial properties, such as coconut husk, bone, wood, etc. Natural activated carbon or pitch-based, petroleum coke-based, resin / rubber-based synthetic activated carbon or the like with silver attached by plating or the like is used. Moreover, any form, such as a powder form, a granular form, and a fiber form, may be sufficient and you may use combining these two or more.
Furthermore, ceramics remove metal ions, and fluorite or synthetic fluorite ceramics, alumina ceramics, silica ceramics, etc. are usually used.
The ion exchange resin removes heavy metals, musty odors, nitrate nitrogen, and the like, and may be either a cation ion exchange resin or an anion ion exchange resin.
Here, the activated carbon normally decomposes and removes the chlorine adhering to the activated carbon, so that there is a possibility that germs may propagate after use. Since it is made by adhering some silver, the propagation of various bacteria after use can be suppressed. In addition, the filter medium 31 made of an ion exchange resin and ceramics does not have the ability to decompose and remove chlorine, and part of the chlorine dioxide from the chlorine dioxide supply unit 20 remains attached. However, the propagation of miscellaneous bacteria after use is suppressed.

  Further, the filter housing 33 includes a cylindrical main body portion 33a in which the casing 22 is joined to the upper end portion, and a mounting portion 33b to which the filter medium cartridge 32 is mounted. And this main-body part 33a is detachable with respect to the mounting part 33b by the screwing type to the mounting part 33b. Therefore, in the first embodiment, the filter medium cartridge 32 is detachably mounted on the mounting portion 33b by removing the main body portion 33a. In the case of carrying out the present invention, the filter medium 33 is not limited to the above screw-in type as long as the filter medium cartridge 32 can be mounted in the filter housing 33 in a replaceable manner. 33b can be hinged or fitted, and a joint such as a clamp band can also be used.

With such a configuration, the water X flowing out from the bottom 22a of the casing 22 permeates the filter medium 31 of the filter medium cartridge 32 configuring the first filter section 30 from the outside to the inside, and It flows out from the outflow part 33C of the filter housing 33 through the flow path 32a formed inside. And when the water X passes the 1st filtration part 30, impurities, such as sand and dust contained in the water X, are removed.
The filter housing 33 and the casing 22 are usually made of a synthetic resin that is highly resistant to chemicals. However, chlorine dioxide used for sterilization in the present invention is highly corrosive to iron and aluminum. Compared with sodium hypochlorite and calcium hypochlorite, the corrosiveness to metals is extremely low, so metallic materials with high pressure resistance can also be used.

Further, since the outflow portion 33C of the filter housing 33 is connected to the suction port of the wing pump 1 via the pipe 34 and a switching valve 80 described later, the water Y flowing out from the outflow portion 33C flows into the pipe 34 and the later described. It reaches the suction port of the wing pump 1 through the switching valve 80.
Specifically, as will be described later, at the time of water purification, the switching valve 80 is in a state where the first filtration unit 30 side and the wing pump 1 side are in communication with each other, as shown in FIG. Therefore, the water Y flowing out from the outflow portion 33C of the filter housing 33 reaches the port 34A of the switching valve 80 through the pipe 34, and is then guided to the passage 80a of the switching valve 80 and guided to the port 1A. Reach the suction port to the pump 1.
The water Y sucked into the suction port of the wing pump 1 is pressurized to a predetermined pressure in the wing pump 1 and is pumped from the discharge port.

  On the other hand, as shown in FIGS. 5 and 6, a substantially rectangular parallelepiped flow path forming member 70 is installed on the discharge port side (the upper side in the drawing) of the wing pump 1. The flow path forming member 70 has, on its side surface, a second filtration unit 40 that filters the water Y pumped from the wing pump 1 and a first filter Z that discharges the water Z filtered by the second filtration unit 40. And a second discharge portion 60 for discharging water Y before being filtered by the second filtration portion and fed from the wing pump 1. Then, the flow path forming member 70 is branched from the flow path 71, and a flow path 71 connecting the wing pump 1 and the second filtration unit 40, as shown in FIG. 9B. Then, a bypass path 72 that bypasses the flow path 71 and the second discharge section 60 is formed, and as shown in FIG. 9C, the second filtration section 40 and the first discharge section 50 are connected to each other. A flow path 73 to be connected is formed.

  That is, the water purifier of Embodiment 1 includes a second filtration unit 40 having a hollow fiber membrane 41 that filters the water Y pumped from the wing pump 1 on the downstream side of the wing pump 1, and a second filtration. A first discharge unit 50 that discharges the water Z filtered by the unit 40, and further branches from a flow path 71 between the wing pump 1 and the second filtration unit 40, It has the 2nd discharge part 60 which discharges the water Y pumped.

  Further, the water purifier of the first embodiment is configured so that the water Z pumped from the wing pump 1 is switched so that the first discharge part 50 or the water Y is discharged from either the second discharge part 60. 51 and a cock 61. In the first embodiment, the cock 51 is incorporated in the first discharge part 50 and the cock 61 is incorporated in the second discharge part 60.

  For this reason, when the cock 61 is closed and the second discharge part 60 is in a closed state, the water Y pumped from the discharge port of the wing pump 1 is guided to the second filtration part 40 via the flow path 71. It is burned.

As shown in FIG. 9 (d), the second filtration unit 40 of the first embodiment is configured with a large number of hollow fiber membranes 41 and a hollow fiber membrane cartridge 42 that accommodates the hollow fiber membranes 41.
The second filtration unit 40 includes at least impurities having a maximum length or a diameter of 0.1 μm or more, mainly particulate harmful substances, bacteria, iron rust, and turbidity components contained in the water Y pumped from the wing pump 1. Etc. are removed.
The hollow fiber membrane 41 is a hollow fiber-like ultra-micro filter made of polyethylene, polysulfone, etc., and is contained in water Y. At least the maximum length or the particulate harmful substance having a diameter of 0.1 μm or more, bacteria / mold In order to prevent the passage of impurities such as iron rust and turbid components, a hole of about 0.1 μm is formed on the outer peripheral surface thereof. In the first embodiment, the hollow fiber membrane 41 is fixed to the end cap 42c for guiding the water Y that has entered from the hole into the inside through an outflow portion 42b described later by a curable resin or the like. The hollow fiber membrane cartridge 42 is housed in a bundled state. Moreover, the hollow fiber membrane 41 of this Embodiment 1 is the state which the upper end side was sealed and the lower end side opened.
The hollow fiber membrane cartridge 42 that accommodates the hollow fiber membrane 41 is freely screwable to the upper surface portion of the flow path forming member 70, and an opening 70 a of the flow path forming member 70 is provided below the hollow fiber membrane cartridge 42. And an outflow portion 42b that fits into the opening 70b of the flow path forming member 70 and flows out the water Z filtered by the hollow fiber membrane 41. And are formed.
That is, the second filtration unit 40 of the first embodiment is an external pressure type in which the outside of the hollow fiber membrane 41 is permeated water and the inside of the hollow fiber membrane 41 is permeated water.

  Therefore, as shown in FIG. 9 (d), the water Y that has reached the second filtration part 40 flows in from the inflow part 42a of the hollow fiber membrane cartridge 42 constituting the second filtration part 40, and the hollow fiber membrane. It enters into the hollow fiber membrane 41 from the hole formed in the outer peripheral surface of 41, flows through the hollow fiber membrane 41, and then flows out from the outflow portion 42 b of the hollow fiber membrane cartridge 42. And when the water Y enters from the outside of the hollow fiber membrane 41 to the inside, particulate harmful substances, bacteria / mold, iron rust, turbidity components, etc. having a maximum length or a diameter of about 0.1 μm are contained in the water Y. Removed. In the first embodiment, as described above, the hollow fiber membrane cartridge 42 containing the hollow fiber membrane 41 is freely mountable to the flow path forming member 70. When greeted, the entire hollow fiber membrane cartridge 42 is replaced with a new one.

  And as above-mentioned, since the 2nd filtration part 40 is connected to the 1st discharge part 50 incorporating the cock 51 via the flow path 73 in the flow path formation member 70, the open state of the cock 51 is shown. , The water Z flowing out from the outflow portion 42b of the hollow fiber membrane cartridge 42 passes through the flow path 73 in the flow path forming member 70 as shown in FIG. It is discharged from the first discharge unit 50 installed in the. Note that the discharge amount of the first discharge portion 50 of the first embodiment can be adjusted by the cock 51.

On the other hand, in a state where the cock 51 is closed and the cock 61 is opened, the water Y pumped from the discharge port of the wing pump 1 is discharged from the second discharge portion 60 via the bypass path 72. Further, the discharge amount of the first discharge unit 60 of the first embodiment can be adjusted by the cock 61.
In addition, when the water purifier of the first embodiment is operated, it is necessary to open either the cock 51 or the cock 61 to prevent the pressure inside the apparatus from increasing.

Thus, the water purifier of this Embodiment 1 is the water purifying channel (1) in the order of the 1st filtration part 30, the wing pump 1, the 2nd filtration part 40, and the 1st discharge part 50 at the time of water purification ( 1) or a water purification path (FIG. 2) for obtaining purified water in the order of the first filtration unit 30, the wing pump 1, and the second discharge unit 60. Here, when the water W from the water source is purified for a long time with the water purifier according to the first embodiment, the pressure loss gradually increases due to clogging of the filter medium 31 of the first filtration unit 30, which hinders the operation state. Will come.
Therefore, in the water purifier according to Embodiment 1, the filter cartridge 32 having the filter medium 31 is removed from the first filter section 30 by the wing pump 1 without having to be removed and replaced or washed ( By allowing the wash water to pass from the output side) to the upstream side (input side), it is possible to easily reduce the clogging of the filter medium 31 of the first filtration unit 30 and restore the filtration performance. A switching valve 80 for switching the flow path between the wing pump 1 and the first filtration unit 30 is provided, and the water guided to the wing pump 1 is obtained in a direction in which purified water is obtained in the first filtration unit 30. A cleaning path (FIGS. 3 and 4) for backflow is also formed.

  That is, the water purifier of the first embodiment flows water in the order of the first filtration unit 30, the wing pump 1, and the second filtration unit 40 when obtaining purified water, and also when washing. When the purified water is obtained as a cleaning means for backflowing the inside of the first filtration unit 30 with the water guided to the wing pump 1, the output side of the first filtration unit 30 is connected to the suction side of the wing pump 1 In addition, when flowing the cleaning water, a switchable switching valve 80 that flows from the discharge side of the wing pump 1 to the output side of the first filtration unit 30 is provided.

Specifically, as shown in FIG. 10, the switching valve 80 according to the first embodiment is installed between the wing pump 1 and the pipe 34, and the operation unit 80c is rotated (arrow shown). A spherical valve body 80A to be operated and a substantially square casing 80B are configured.
The valve body 80A is rotatably disposed in the casing 80B and has a substantially L-shaped passage 80a and a passage 80b.
Further, the casing 80B has four ports, that is, a port 1A connected to the suction side of the wing pump 1, a port 34A connected to the pipe 34, a port 81A connected to a water intake hose 81 for taking in cleaning water, And the port 82A connected to the connection hose 82 connected with the 1st discharge part 50 or the 2nd discharge part 60 is formed.

Then, in the switching valve 80 of the first embodiment, when the operation unit 80c is in the position shown in FIG. 10C, as shown in FIG. 10B, the port 34A and the port 1A pass through the passage 80a. The port 82A and the port 81A communicate with each other through the passage 80b.
On the other hand, when the operation unit 80c is in the position shown in FIG. 10E, the port 81A and the port 1A communicate with each other through the passage 80a as shown in FIG. And the port 34A communicate with each other via a passage 80b.
In addition, both the intake hose 81 and the connection hose 82 are comprised with the pressure | voltage resistant hose for pumps. Of course, it is also possible to use the introduction pipe 10 used to introduce the water W from the water source into the intake hose 81.

  For this reason, in the water purifier of the first embodiment, the intake hose 81 is connected to the port 81A of the switching valve 80, and the connection hose 82 connected to the first discharge part or the second discharge part 60 is connected to the port 82A. When the operation part 80c of the switching valve 80 is operated to the position shown in FIG. 10C, the first filtration part 30 and the wing pump 1 communicate with each other, and the water intake hose 81 and the connection hose 82 communicate with each other. To do. On the other hand, when the operation part 80c of the switching valve 80 is switched to the position shown in FIG. 10 (e), the water intake hose 81 and the wing pump 1 communicate with each other, and the connection hose 82 and the first filtration part 30 communicate with each other.

  Therefore, when the wing pump 1 is driven in a state in which the operation portion 80c of the switching valve 80 is in the position shown in FIG. 10E, the washing water contained in a container such as a bucket as shown in FIGS. Reaches the port 81A of the switching valve 80 via the water intake hose 81. The wash water that has reached the port 81A of the switching valve 80 is guided to the passage 80a of the switching valve 80, led to the port 1A of the switching valve 80, and sucked into the suction port of the wing pump 1, and then discharged. Pumped from the outlet. When the connecting hose 82 is connected to the first discharge part 50 and the cock 61 is closed and the cock 51 is opened, the wash water pumped from the wing pump 1 is second filtered. After reaching the first discharge part 50 via the part 40, it is guided to the port 82A of the switching valve 80 via the connecting hose 82 (FIG. 3). On the other hand, when the connecting hose 82 is connected to the second discharge part 60 and the cock 51 is closed and the cock 61 is opened, the wash water pumped from the wing pump 1 After reaching the discharge part 60, it is led to the port 82A of the switching valve 80 via the connecting hose 82 (FIG. 4). In addition, in order to avoid useless use of the 2nd filtration part 40, it is preferable that the wash water pumped from the wing pump 1 passes the path | route as shown in FIG.

Then, as shown in FIGS. 3 and 4, the washing water guided to the port 82A of the switching valve 80 is guided to the port 34A by being guided by the passage 80b of the switching valve 80, and via the pipe 34, It reaches the first filtration unit 30 and flows through the first filtration unit 30 in the opposite direction to that during water purification. That is, the wash water that has reached the first filtration unit 30 flows from the outflow portion 33C of the first filtration unit 30 and then passes from the inside to the outside of the filtering material 31 of the first filtration unit 30, and thus the dioxide dioxide. It flows out from the introduction pipe attachment port 33A through the chlorine supply part 20. And when washing water passes from the inner side to the outer side of the filter medium 31, the pressure from the wing pump 1 removes impurities including particulate matter / powder such as sand and dust attached to the filter medium 31. It is.
In the first embodiment, the wash water that has passed from the inside to the outside of the filter medium 31, that is, the wash water after washing the filter medium 31 is supplied with chlorine dioxide as shown in FIGS. 3 and 4. It is designed to be discharged to the outside through the part 20, but when implementing the present invention, a drain with a valve is provided at the lower part of the filter housing 33 constituting the first filtration part 30, The washing water after washing the filter medium 31 from this drain may be discharged to the outside. As a result, the washing water after washing the filter medium 31 is discharged to the outside without passing through the chlorine dioxide supply unit 20, so that the chlorine dioxide generating agent 21 is removed from the casing 22 when washing the first filtration unit 30. Therefore, it is possible to easily prevent chlorine dioxide from being supplied to the washing water.

Therefore, in the water purifier according to the first embodiment, when the cleaning means obtains purified water, the water flows in the order of the first filtration unit 30, the wing pump 1, and the second filtration unit 40. In this case, it means a configuration in which the inside of the first filtration unit 30 is caused to flow backward by the water guided to the wing pump 1. In the present embodiment, specifically, when obtaining purified water, the output side of the first filtration unit 30 is connected to the suction side of the wing pump 1, and when flushing water is supplied, the wing The switching valve 80 is configured to be switchable from the discharge side of the pump 1 to the output side of the first filtration unit 30. In addition, as above-mentioned, when the water purifier of this Embodiment 1 obtains purified water without letting the 2nd filtration part 40 pass, the 1st filtration part 30, the wing pump 1, and 2nd discharge | emission. It is also possible to flow water in the order of the parts 60.

As described above, when the operation unit 80c is in the position shown in FIG. 10C, the switching valve 80 according to the first embodiment has a port 81A and a port 82A as shown in FIG. 10B. The passage 80b communicates. For this reason, at the time of water purification, as shown in FIGS. 1 and 2, the intake hose 81 is connected to the port 81 </ b> A of the switching valve 80, and the second discharge portion 60 or the first discharge is connected to the port 82 </ b> A of the switching valve 80. When the connecting hose 82 connected to the part 50 is connected and the wing pump 1 is driven in this state, the purified water from the second discharge part 60 or the first discharge part 50 is connected to the connection hose 82, the switching valve 80, and It is discharged to the outside through the water intake hose 81. At the time of washing, the washing water is sucked by the wing pump 1 through the water intake hose 81 and the switching valve 80 as shown in FIG. 3 and FIG. The wash water is pumped to the first filtering unit 30 in the opposite direction to that of the purified water through the second discharge unit 60 or the first discharge unit 50, the connecting hose 82, and the switching valve 80.
That is, according to the water purifier of the first embodiment, the intake hose 81 is switched to the port 81A of the switching valve 80, and the connection hose 82 connected to the second discharge part 60 or the first discharge part 50 is switched. Since the purified water and the first filtration unit 30 can be cleaned even when connected to the port 81A of the valve 80, the switching operation between the purified water and the first filtration unit 30 can be changed. Only one switching operation of the operation unit 80c can be performed.
Therefore, in the water purifier of the first embodiment, the switching operation at the time of water purification and the washing of the first filtration unit 30 is very easy to understand, and the switching between the water purification and the washing of the first filtration unit 30 is very easy. Can be performed very easily.

  However, when implementing the present invention, the port 1A connected to the wing pump 1, the port 34A connected to the pipe 34, the port 81A connected to the intake hose 81, and the port 82A connected to the connecting hose 82 are provided. And at least the port 1A and the port 34 can communicate with each other at the time of water purification, and the port 81A and the port 1A can communicate with each other at the time of cleaning the first filtration unit 30, and the port 82 and the port 34A. The position of each port, the valve body, the shape of the casing, and the like are not limited to the form of the switching valve 80 of the first embodiment. For example, FIG. It can also be set as the form of the switching valve 83 as shown.

As shown in FIG. 11, the switching valve 83 includes a spool-shaped valve body 83A and a substantially rectangular casing 83B.
The valve body 83A is slidably disposed in the casing 83B and has lands 83c and 83d for constituting the passages 83a and 83b.
The casing 83B has four ports, that is, a port 1A connected to the suction side of the wing pump 1, a port 34A connected to the pipe 34, a port 81A connected to the intake hose 81, and a second port. A port 82 </ b> A that can be connected to the connection hose 82 connected to the discharge unit 60 or the first discharge unit 50 is formed.
A packing (not shown) such as an O-ring is interposed between the lands 83c and 83d and the casing 83 in order to eliminate a gap.

As shown in FIG. 11A, the switching valve 83 is in a state in which the locking portion 83e of the valve body 83A is in contact with the casing 83B, that is, the valve body 83A cannot be pushed further into the casing 83B. When in the state, the port 34A and the port 1A communicate with each other through the passage 83a.
On the other hand, as shown in FIG. 11 (b), when the land 83c of the valve body 83A is in contact with the casing 83B, that is, when the valve body 83A cannot be pulled out from the casing 83B any more, 81A and port 1A communicate with each other through a passage 83b, and port 82A and port 34A communicate with each other through a passage 83a.

Therefore, the switching valve 83 connects the output side of the first filtration unit 30 to the suction side of the wing pump 1 when obtaining purified water, and from the discharge side of the wing pump 1 when flowing wash water. The switching valve 83 is a switchable switching valve that flows to the output side of the first filtration unit 30. When this switching valve 83 is used, the second switching valve is used every time the water is purified and the first filtration unit 30 is washed. An operation of attaching and detaching the connecting hose 82 connected to the discharge unit 60 to the port 82A of the switching valve 83 is necessary.
Furthermore, when obtaining purified water, water is flowed in the order of the first filtration unit 30, the wing pump 1, and the second filtration unit 40, and water that is guided to the wing pump 1 is used for cleaning. If the inside of the 1st filtration part 30 can be made to flow backward by this, a washing | cleaning means will not be limited to the form of the said switching valve 80 and the switching valve 83, For example, the 1st filtration part 30 and the wing pump 1 are included. The pipe 34 for connecting to the wing pump 1 is configured to be removable, the intake hose 81 is connected to the suction port of the wing pump 1, and the connecting hose 82 is connected to the outflow portion 33 </ b> C side of the first filtration unit 30. It is also possible to cause the inside of the first filtration unit 30 to flow backward by the water guided to 1.

By the way, since the water purifier of this Embodiment 1 drives the wing pump 1 by manual operation in this way, energy sources, such as electric power as a motive power source, are unnecessary. In addition, the chlorine dioxide generator 21 is disposed in the flow path of the water X from the water source toward the wing pump 1, and the chlorine dioxide generator 21 is dissolved in the water X so as to supply chlorine dioxide. Compared with the case of injecting an aqueous solution of chlorine dioxide, a device such as a pump for continuously injecting chlorine dioxide water is not required. Furthermore, even if sterilization with chlorine dioxide is insufficient, the bacteria and the like contained in the water Y are sufficiently removed by the second filtration unit 40, and even when there is a large amount of residual chlorine in the chlorine dioxide. Since excessive residual chlorine is adsorbed and removed by using activated carbon as the filter medium 31, an apparatus for adjusting the chlorine concentration of chlorine dioxide is also unnecessary.
That is, the water purifier according to the first embodiment simplifies the facility by providing only the minimum necessary facilities for securing water suitable for beverages. Therefore, it is lightweight and small, and can be carried alone to a water source such as a river.
As described above, chlorine dioxide used for sterilization in the present invention is more corrosive to metals than sodium hypochlorite and calcium hypochlorite, which are highly corrosive to iron and aluminum. Since it is very low, the water purifier of Embodiment 1 is not particularly limited in the material of its constituent parts, and has a high degree of design freedom.

Here, in the water purifier according to the first embodiment, the wing pump 1 is assembled to the gantry frame 90 as shown in FIGS.
The gantry frame 90 includes a pair of legs 91a and 91b made by bending a metal pipe such as stainless steel into a substantially U shape, and a metal pipe such as stainless steel. It is formed by bending into a letter shape and is composed of a vertical portion 92 erected substantially perpendicularly to the leg portions 91a and 91b.

Further, as shown in FIG. 6, the legs 91a and 91b are erected substantially perpendicular to the ground as shown in FIG. 6, so that the legs 91a and 91b can be erected in a stable state on the ground. The ground plane is configured to be flat. And in order to restrict | limit the movement between the leg parts 91a and 91b, to stabilize the standing-up, and to raise mechanical strength, these leg parts 91a and 91b are joined by the complement part 91c.
Further, an assembly portion 92a (FIG. 5) is provided below the vertical portion 92, and the wing pump 1 is assembled to the assembly portion 92a by welding. In the case of carrying out the present invention, if the wing pump 1 can be firmly assembled to the assembly portion 92a of the gantry frame 90, the joining method of both is not limited to the above-mentioned welding form. It can also be bolted.
And the horizontal upper end of the vertical part 92 becomes the holding part 92b which a user holds at the time of conveyance.

Therefore, according to the water purifier of the first embodiment, the water purifier can be carried while holding the grip portion 92b of the gantry frame 90, and the wing pump 1 can be prevented from being displaced or detached from the gantry frame 90. .
Moreover, even if the ground undulates due to a disaster or the like, the water purification apparatus of the first embodiment cannot be installed horizontally on the ground and the wing pump 1 cannot be driven, the water purification apparatus of the present embodiment The wing pump 1 can be driven because the gripping portion 92b is lifted and brought into a horizontal state.

  In the case of carrying out the present invention, the gantry frame 90 is not limited to the above form as long as it can stand on the ground and facilitates its transportation. For example, as shown in FIG. The casters 93 may be provided on the legs 91a and 91b (FIG. 5) of the gantry frame 90. Thereby, since it can be moved on the ground, it can be transported more easily. In addition, it is desirable to provide the caster 93 with a stopper so that the movement is restricted in the stationary state. Alternatively, it is desirable that the state changes depending on whether it is transported or used. Further, the gantry frame 90 can be provided with a backpack that is carried on the back during transportation. As a result, the user can carry the transport work on his / her back, and can also move the work by climbing stairs and ladders by making both hands free, so the movement is free. .

  Next, the operation | movement at the time of water purification of the water purifier of this Embodiment 1 comprised in this way is demonstrated.

First, in performing water purification using the water purification apparatus of the first embodiment, the water purification apparatus of the first embodiment is moved to the vicinity of the water source, and as shown in FIG. 1 and FIG. The strainer 11 attached to is put into the water W of the water source.
And after installing the chlorine dioxide generating agent 21 in the casing 22 which comprises the chlorine dioxide supply part 20, the cover body 23 is hinged to the casing 22. FIG.
Further, the operation portion 80c of the switching valve 80 installed between the wing pump 1 and the pipe 34 is set to the position shown in FIG. 10C, and the first switching valve 80 is used as shown in FIG. The filtration unit 30 side and the wing pump 1 side are in communication. Note that the water purifier of the first embodiment is small and lightweight as described above, and as shown in FIGS. 5 and 6. In addition, since the wing pump 1 is assembled to the gantry frame 90 having the gripping portion 91, transportation to the water source is easy.

  In this state, when the operation portion 1a of the wing pump 1 is rotated, the water W as the water source is sucked into the introduction pipe 10 as shown in FIGS. In the water purifier according to the first embodiment, since the strainer 11 is attached to the tip of the introduction pipe 10, relatively large foreign matters such as mud, leaves, and pebbles are sucked into the introduction pipe 10 and the purification efficiency is improved. There is no extreme decline.

Then, the water X sucked into the introduction pipe 10 has passed through a pipe 33B disposed on the upper part of the filter housing 33 constituting the first filtration part 30, as shown in FIGS. After that, it is released upward in the chlorine dioxide supply unit 20.
Here, as described above, the chlorine dioxide generating agent 21 is installed on the bottom 22a of the casing 22 constituting the chlorine dioxide supply unit 20, and the bottom 22a is a mesh.
For this reason, the water X released upward in the chlorine dioxide supply part 20 flows in fluid contact with the chlorine dioxide generator 21 and then flows from the mesh-shaped bottom part 22a toward the filter cartridge 32 in the filter housing 33. . When the water X is in fluid contact with the chlorine dioxide generator 21, the chlorine dioxide generator 21 is dissolved in the water X, so that chlorine dioxide is supplied to the water X.

In particular, in the first embodiment, the water X from the introduction pipe 10 is discharged upward in the chlorine dioxide supply unit 20, so that the water X from the introduction pipe 10 wraps a large vortex in the casing 22. Flowing. For this reason, compared with the case where the water X introduced by the introduction pipe 10 is discharged downward or sideways in the chlorine dioxide supply unit 20, the water X introduced by the introduction pipe 10 and the chlorine dioxide generating agent 21 are compared. The contact time with the water is long, and more chlorine dioxide is mixed into the water X.
Further, in the water purifier according to the first embodiment, the mesh-shaped bottom portion 22a on which the chlorine dioxide generating agent 21 is installed is disposed in the filter housing 33, so that the filter housing before being filtered by the filter medium 31 is used. The chlorine dioxide generator 21 is dissolved in the water X staying in the water 33, and chlorine dioxide is mixed into the staying water X. Therefore, when the chlorine dioxide supply part 20 is arranged independently of the filter housing 33 constituting the first filtration part 30, for example, the chlorine dioxide generator 21 does not contact the water X staying in the filter housing 33. In comparison, the sterilization rate of water X is improved.
In addition, sterilization with chlorine dioxide is more effective at low concentrations because it has stronger sterilization power (oxidation power) and persistence compared to sodium hypochlorite and calcium hypochlorite used in normal water sterilization. The bactericidal effect can be exhibited. Further, sterilization with chlorine dioxide is not easily influenced by the pH value of water, and does not generate harmful substances such as trihalomethane during the sterilization process. Furthermore, when purifying water containing a large amount of organic matter, sterilization with sodium hypochlorite or calcium hypochlorite results in poor sterilization efficiency because hypochlorous acid reacts with organic matter. Sterilization efficiency is good because it does not react with organic matter.

  Further, as shown in FIGS. 1, 2, and 8, the water that has flowed toward the filter medium cartridge 32 passes from the outside to the inside of the filter medium 31 and is formed in the filter medium 31. It flows out from the outflow part 33C of the filter housing 33 through 32a. And when the water X passes the 1st filtration part 30, the impurity containing fine granular materials and powdery substances, such as sand and dust which could not be removed with the strainer 11, is removed. In particular, when silver impregnated activated carbon is used as the filter medium 31, chlorine, mold odor, nonionic impurities, agricultural chemicals, etc. are removed, and when ceramic is used as the filter medium 31, When metal ions are removed and an ion exchange resin is used as the filter medium 31, heavy metals, mold odor, and nitrate nitrogen are removed.

  Further, as shown in FIGS. 1, 2, and 10 (b), the water Y flowing out from the outflow portion 33 </ b> C passes through the pipe 34, reaches the port 34 </ b> A of the switching valve 80, and enters the passage 80 a of the switching valve 80. After being guided to the port 1A of the switching valve 80, it is sucked into the suction port of the wing pump 1. The water Y sucked into the wing pump 1 is pressurized to a predetermined pressure inside the wing pump 1 and then pumped from the discharge port to the flow path forming member 70.

  Here, when the cock 61 incorporated in the second discharge part 60 is in a closed state, the water Y pumped from the discharge port of the wing pump 1 to the flow path forming member 70 is shown in FIG. As shown in FIG. 6, the air flows into the hollow fiber membrane cartridge 42 from the inflow portion 42 a of the hollow fiber membrane cartridge 42 constituting the second filtration unit 40 through the flow channel 71 in the flow channel forming member 70.

  The water Y that has flowed into the hollow fiber membrane cartridge 42 enters the hollow fiber membrane 41 through a small hole formed in the surface of the hollow fiber membrane 41 and flows out from the outflow portion 42b of the hollow fiber membrane cartridge 42. To do. And when water Y passes the 2nd filtration part 40, at least maximum length contained in water Y or a particulate harmful substance with a diameter of 0.1 micrometer or more, bacteria, mold, iron rust, a cloudy component, etc. Impurities are removed. The membrane filtration by the hollow fiber membrane 41 can increase the surface area as compared with the membrane filtration by the ceramic membrane as an ultra-micro filter, so that the hollow fiber membrane 41 can be extended.

And the water Z which flowed out from the outflow part 42b of the hollow fiber membrane cartridge 42 passes the flow path 73 formed in the flow path formation member 70 as shown in FIG.9 (c) in the open state of the cock 51, It is discharged from the first discharge unit 50.
At the time of water purification, as shown in FIG. 1, the first discharge portion 50 and the port 82 </ b> A of the switching valve 80 are connected by the connecting hose 82, and the water intake hose 81 is connected to the port 81 </ b> A of the switching valve 80. In the case where the purified water from the first discharge section 50 reaches the port 82A of the switching valve 80 via the connecting hose 82, the purified water is guided to the passage 80b of the switching valve 80 to the port 81 of the switching valve 80. And is discharged to the outside through the water intake hose 81.

On the other hand, when the cock 51 is closed and the cock 61 is in an open state, the water Y pumped from the discharge port of the wing pump 1 passes through the bypass path 72 in the flow path forming member 70 to It is discharged from the second discharge unit 60.
During water purification, as shown in FIG. 2, the second discharge portion 60 and the port 82 </ b> A of the switching valve 80 are connected by the connecting hose 82, and the water intake hose 81 is connected to the port 81 </ b> A of the switching valve 80. In the case where the purified water from the second discharge section 60 reaches the port 82A of the switching valve 80 via the connecting hose 82, the purified water is guided to the passage 80b of the switching valve 80 to the port 81 of the switching valve 80. And is discharged to the outside through the water intake hose 81.

  Thus, in the water purifier of the first embodiment, the first filtration unit 30 is disposed on the upstream side of the wing pump 1, and the water Y filtered by the first filtration unit 30, that is, the wing Since the water Y from which particulate matter, sludge, etc. causing clogging of the pump 1 are removed is sucked into the suction port of the wing pump 1, the wing pump 1 can be clogged even if it is used for a long time. Absent.

  Here, in the water purifier according to the first embodiment, the first filtration unit 30 that causes a pressure loss is disposed on the upstream side of the wing pump 1, and the purification efficiency due to the pressure loss in the first filtration unit 30. However, the wing pump 1 is used as a pump for sucking the water Y and pumping the sucked water Y. The wing pump 1 is composed of a reciprocating pump excellent in suction and pushing-up force. Even if the 1st filtration part 30 is arrange | positioned in the upstream of 1, sufficient purification efficiency is obtained.

By the way, when the chlorine dioxide supply part 20 and the 2nd filtration part 40 which sterilize and disinfect bacteria are provided after the 1st filtration part 30, the water X containing many bacteria is 1st filtration. Since it passes through the section 30, many bacteria adhere to the first filtration section 30, and there is a risk that the bacteria will proliferate on the first filtration section 30 when the passage of water is stopped for several hours after use. is there. In such a case, the water Y containing many bacteria at the time of resuming the water flow reaches the chlorine dioxide supply unit 20 and the second filtration unit 40, and in particular increases the burden on the second filtration unit 40. In addition, there is a possibility of degrading maintainability.
Moreover, when the chlorine dioxide supply part 20 which supplies the chlorine dioxide which performs sterilization is provided after the 2nd filtration part 40 which disinfects, many bacteria in the hollow fiber membrane 41 of the 2nd filtration part 40 Therefore, there is a possibility that the purification efficiency is lowered in a short time, and the hollow fiber membrane 41 cannot be prolonged.

However, in the water purifier according to the first embodiment, chlorine dioxide is supplied by the chlorine dioxide supply unit 20 prior to filtration by the first filtration unit 30 and filtration by the second filtration unit 40. Since bacteria contained in the water Y are reduced in the previous stage of the second filtration unit 40, the burden on the second filtration unit 40 is reduced.
In addition, sterilization with chlorine dioxide provides high sterilization power and residual effect even at low concentrations compared to sterilization with sodium hypochlorite, which is the mainstream of water sterilization. Compared with the case where it does, the burden of the 2nd filtration part 40 is reduced more.
Therefore, in the water purifier of the first embodiment, the filtration efficiency in the second filtration unit 40 is maintained well for a long time. Further, the hollow fiber membrane 41 can be made long lasting.

Then, the operation | movement at the time of the washing | cleaning of the 1st filtration part 30 which concerns on the water purifier of this Embodiment 1 is demonstrated.
First, when cleaning the first filtration unit 30, a water intake hose 81 that takes in the cleaning water contained in a container such as a bucket is connected to the port 81A, and the first discharge unit 50 (FIG. 3). Or the 2nd discharge part 60 (Drawing 4) and port 82A are connected with connecting hose 82 beforehand. In addition, in order to avoid useless use of the 2nd filtration part 40, it is preferable to connect the connection hose 82 to the 2nd discharge part 60 (FIG. 4).
Then, the operation portion 80c of the switching valve 80 is switched to the position shown in FIG. 10 (e), and as shown in FIG. 10 (c), the intake hose 81 side and the wing pump 1 side are communicated by the switching valve 80, The connection hose 82 side and the 1st filtration part 30 side are connected.
In the first embodiment, as shown in FIGS. 1 to 4, the purified water from the first discharge part 50 or the second discharge part 60 is passed through the connecting hose 82, the switching valve 80 and the intake hose 81. The water is stored in a bucket or the like, and the stored water is used as cleaning water for the first filtration unit 30.

When the wing pump 1 is driven in this state, the wash water is sucked from the water intake hose 81 as shown in FIGS. Then, this washing water reaches the port 81A of the switching valve 80, is guided by the passage 80a of the switching valve 80, is guided to the port 1A, and is sucked into the suction port of the wing pump 1. The washing water sucked into the suction port of the wing pump 1 is pressurized to a predetermined pressure in the wing pump 1 and then pumped from the discharge port of the wing pump 1.
As shown in FIG. 3, when the connecting hose 82 is connected to the first discharge part 50 and the cock 61 is closed and the cock 51 is opened, the cleaning pumped by the wing pump 1 is used. The water reaches the second filtration unit 40 via the flow path 71, and then reaches the port 82 </ b> A of the switching valve 80 through the first discharge unit 50 and the connection hose 82.
On the other hand, as shown in FIG. 4, when the connecting hose 82 is connected to the second discharge part 60 and the cock 51 is closed and the cock 61 is opened, the pump is pumped from the wing pump 1. The wash water reaches the second discharge part 60 via the flow path 71 and FIG. 72, and then reaches the port 82 </ b> A of the switching valve 80 through the connection hose 82.

  As shown in FIGS. 3 and 4, the wash water that has reached the port 82A of the switching valve 80 is guided to the passage 34b and guided to the port 34A, and then the first filtration is performed via the pipe 34. Reach part 30. Further, the wash water that has reached the first filtration unit 30 flows in from the outflow portion 33C of the first filtration unit 30 and permeates from the inside to the outside of the filter material 31 and passes through the introduction pipe attachment port portion 33A. It is discharged outside. When the cleaning water permeates from the inside to the outside of the filter medium 31, impurities such as dust and sand attached to the filter medium 31 are removed by the pressure of the wing pump 1, and the impurities are discharged to the outside together with the cleaning water. Discharged.

  Thus, in this Embodiment 1, even when pressure loss has increased due to clogging of the filter medium 31 of the first filter section 30, the pressure of the wing pump 1 is increased without removing the filter medium 31. Since the cleaning water can be flowed through the first filtration unit 30 in the direction opposite to that at the time of water purification, the clogging of the filter medium 31 can be easily and efficiently reduced and the filtration performance can be recovered. That is, according to the water purifier of Embodiment 1, the filtration efficiency in the first filtration unit 30 can be maintained well for a long time. In addition, the filter medium 31 of the first filter unit 30 can be made long-lasting.

  Further, as described above, the water purifier according to the first embodiment is configured such that the water intake hose 81 is connected to the port 81A of the switching valve 80 at the time of water purification and when the first filtration unit 30 is washed, as shown in FIGS. And the connecting hose 82 connected to the second discharge part 60 or the first discharge part 50 is connected to the port 82A of the switching valve 80, so that one switching operation of the switching valve 80 is performed. Since it is possible to switch between clean water and washing the first filtration unit 30 with an easy-to-understand operation, switching between clean water and washing the first filtration unit 30 can be performed very easily. Good.

As described above, the water purifier according to the first embodiment is arranged on the upstream side of the wing pump 1 as a human-powered reciprocating pump that sucks the water W and pumps the sucked water W. And an introduction pipe 10 serving as an introduction section for introducing water Y sucked into the wing pump 1 from a water source, and disposed downstream of the introduction pipe 10 and upstream of the wing pump 1 and introduced through the introduction pipe 10. The chlorine dioxide supply unit 20 for supplying chlorine dioxide for sterilizing the water X, and the upstream side of the wing pump 1 on the downstream side of the chlorine dioxide supply unit 20 and included in the water X supplied with chlorine dioxide The first filtering unit 30 having the filtering material 31 for reducing impurities that reduce the load of the second filtering unit and reducing the content of chlorine dioxide and the wing pump 1 are disposed on the downstream side of the wing pump 1. Pressure from pump 1 A second filtration unit 40 having a hollow fiber membrane 41 for filtering the water Y, and removing impurities having a maximum length or diameter of 0.1 μm or more contained in the water Y pumped from the wing pump 1; When the purified water is obtained, water is flowed in the order of the first filtering unit 30, the wing pump 1, and the second filtering unit 40, and the first guided by the water guided to the wing pump 1 during the cleaning. As a cleaning means for backflowing the inside of the filtration unit 30, when obtaining purified water, the output side of the first filtration unit 30 is connected to the suction side of the wing pump 1, and when flowing the washing water, the wing pump A switching valve 80 that can be switched from one discharge side to the output side of the first filtration unit 30 is provided.

Here, when the inside of the first filtration unit 30 is caused to flow backward by the water guided to the wing pump 1, at least a path through which the water pressurized by the wing pump 1 flows backward to the first filtration unit 30 side. It does not mean that another switching valve 80 or pipe line is provided as long as it exists, and it is sufficient that a reverse flow can be formed.

Moreover, the water purifier of this Embodiment 1 is attached to the front-end | tip of the introductory pipe 10, and the strainer 11 which filters the water X introduce | transduced into the introductory pipe 10 is separated from the water bottom by the predetermined distance. It has.

Therefore, according to the water purifier of the first embodiment, the particulate matter and sludge that cause clogging of the wing pump 1 are removed by the strainer 11 and the first filtration unit 30, and the particulate matter and sludge are directly removed. Therefore, the wing pump 1 is not clogged even if it is used for a long time, and functions such as the suction force and the discharge force of the wing pump 1 are maintained for a long time. Further, since the strainer 11 prevents relatively large foreign substances such as mud, leaves, pebbles and the like contained in the water W of the water source from entering the introduction pipe 10, these large foreign substances are clogged in the introduction pipe 10 and the purification efficiency is improved. It can be prevented from becoming extremely bad. In addition, since the wing pump 1 having excellent suction and pushing-up force is used as a pump for sucking the water W from the water source and pumping the sucked water W, the first filtration unit 30 that causes pressure loss is used as the wing pump 1. Even if it is arranged upstream, sufficient purification efficiency can be obtained.

Moreover, according to the water purifier of this Embodiment 1, the chlorine dioxide supply by the chlorine dioxide supply part 20 is performed prior to the filtration by the hollow fiber membrane 41 of the second filtration part 40, that is, the sterilization. In addition, since bacteria contained in the water Y are reduced before the second filtration unit 40, the burden on the hollow fiber membrane 41 can be reduced. In addition, sterilization with chlorine dioxide can achieve high sterilization power and residual effect even at low concentrations compared to sterilization with hypochlorine, which is the mainstream of water sterilization. And the burden of the hollow fiber membrane 41 of the 2nd filtration part 40 can be reduced more.
Furthermore, prior to filtration in the first filtration unit 30, chlorine dioxide is supplied by the chlorine dioxide supply unit 20, compared with the case where the chlorine dioxide supply unit 20 is provided after the first filtration unit 30. Then, since the adhesion of bacteria in the first filtration unit 30 is reduced, it is possible to reduce the propagation of bacteria in the first filtration unit 30 when the water passage is stopped for several hours after use. it can. Therefore, the increase in the burden of the hollow fiber membrane 41 due to the water Y containing the bacteria propagated in the first filtration unit 30 at the time of resuming water flow reaching the second filtration unit 40 can be reduced.
Therefore, according to the water purifier of this Embodiment 1, the filtration efficiency in the 2nd filtration part 40 can be maintained favorable for a long time.

In addition, according to the water purifier of the first embodiment, the first filtering unit is cleaned using the pressure of the wing pump 1 without removing the filtering material 31 of the first filtering unit 30. The filtration performance can be recovered easily and efficiently by reducing the clogging of the filter medium 31 of the first filtration unit 30. Furthermore, the apparatus can be reduced in weight because a pump dedicated to cleaning is not required.
Therefore, the filtration efficiency in the 1st filtration part 30 can be maintained favorable for a long time, and the filter material of the 1st filtration part 30 can also be made 31 last longer.
Further, if the switching valve 80 is used, even if the entire operation is mistaken, the switching valve 80 is not closed, so there is no possibility that the load of the wing pump 1 becomes excessive. And since switching at the time of water purification and washing | cleaning can be performed by simple operation called switching operation of the switching valve 80, the switching is easy.

In this way, the purification efficiency can be maintained well for a long time, and the water purifier is excellent in maintainability.

Moreover, the water purifier of the first embodiment includes a second discharge unit 60 that branches from between the wing pump 1 and the second filtration unit 40 and discharges the water Y pumped from the wing pump 1. To do.
Therefore, according to the water purifier of the first embodiment, water having different degrees of purification can be obtained from the water W of the same water source.

Furthermore, the water purifier of the first embodiment is pumped from the wing pump 1 so that the water Y pumped from the wing pump 1 is discharged from either the first discharge unit 50 or the second discharge unit 60. The cock 51 and the cock 61 for switching the flow of the water Y are provided.
Therefore, according to the water purifier of the first embodiment, water having a different degree of purification can be efficiently obtained, and the degree of purification can be selected according to the quality of the water W as the water source. In particular, it is economical because it is possible to avoid useless use of the hollow fiber membrane 41 when filtration by the hollow fiber membrane 41 is not required, for example, when it is desired to obtain domestic water that does not require water quality as that of drinking water. In addition, it is possible to extend the life of the hollow fiber membrane 41 and maintain good filtration efficiency in the second filtration unit 40.
In addition, the use of the second filter unit is switched by operating the cock 51 and the cock 61 without attaching or detaching the second filter unit 40 or stopping the purification operation. The operation is easy, and the cock 51 and the cock 61 are incorporated in the first discharge part 50 and the second discharge part 60, respectively, so that the first discharge part 50 and the second discharge part 60 are discharged. The amount can also be adjusted.
In addition, since the water purifier of this Embodiment 1 has separate the place discharged | emitted by the water Y before passing through the 2nd filtration part 40, and the water Z after passing through, it is hygienic.

Furthermore, according to the water purifier of the first embodiment, the first filtering unit 30 is a filtering medium 31 made of any one of silver-impregnated activated carbon, ceramics, and ion exchange resin, and is stored in the filtering medium cartridge 32. Since it can be exchanged, the optimum filter medium 31 can be selected according to the water quality of the water source, which is excellent in convenience. In addition, the filter medium 31 made of silver-impregnated activated carbon has a chlorine decomposition removal ability, but since antibacterial silver is added, compared with a filter medium made of activated carbon not attached with silver, Proliferation of miscellaneous bacteria can be reduced. In addition, the filter medium 31 made of ceramics or ion exchange resin does not have the ability to decompose and remove chlorine, so that a part of the residual chlorine dioxide of chlorine dioxide from the chlorine dioxide supply unit 20 can remain in the filter medium 31. It is possible to reduce the propagation of germs after use, and to further improve the hygiene reliability.

Moreover, according to the water purifier of Embodiment 1, since chlorine dioxide is supplied by the chlorine dioxide generator 21 that generates chlorine dioxide by being dissolved in the water X introduced by the introduction pipe 10, the chlorine dioxide aqueous solution Compared with the case of supplying in a form, it is possible to reduce the solubility and supply chlorine dioxide with a simple configuration. Furthermore, since it is a tablet, handling such as replenishment and transportation is easy.
And since the bottom part 22a of the casing 22 in which the chlorine dioxide generating agent 21 is installed is comprised by mesh shape and is arrange | positioned in the filter housing 33 which comprises the 1st filtration part 30, 1st filtration When the water X before being filtered by the filtering material 31 of the part 30 stays in the filter housing 33 and the water level reaches the bottom 22a of the casing 22, the chlorine dioxide generating agent 21 is also contained in the staying water. Dissolves. Accordingly, since a large amount of chlorine dioxide can be generated and mixed in the water X in a short time, the sterilization rate of the water X can be further increased.
In addition, since the lid 23 that allows the opening 22b of the casing 22 to be opened and closed is made of a transparent material, the remaining amount and mixed state of the chlorine dioxide generating agent 21 can be visually recognized without removing the lid 23. In addition, as a transparent material which comprises the cover body 23, although synthetic resin materials, such as a transparent glass material or a plastic, are normally used, when implementing this invention, without removing the cover body 23, If the remaining amount and mixed state of the chlorine dioxide generating agent 21 in the casing 22 can be visually confirmed, the lid body 23 can be made of a translucent material.

And the water purifier of this Embodiment 1 comprises the gantry frame 90 which has the holding part 92b hold | gripped at the time of the conveyance which assemble | attaches the wing pump 1. As shown in FIG.
Therefore, the user can grip the grip portion 92b to perform the transport operation, and further, the wing pump 1 can be prevented from being displaced or detached from the gantry frame 90 during the transport. Transport work can be facilitated.

[Embodiment 2]
Next, a water purifier according to Embodiment 2 of the present invention will be described with reference to FIGS. In the second embodiment of the present invention, the difference from the first embodiment is that the water pumped from the wing pump 1 in the first embodiment is either the first discharge portion 50 or the second discharge portion 60. Instead, the switching valve 100 is used in place of the cock 51 and the cock 62 which are switched so as to be discharged from one of them. Since other configurations are the same as those of the first embodiment, the description thereof is omitted.

  That is, as shown in FIGS. 13 to 16, in the water purifier of the second embodiment, water pumped from the wing pump 1 is discharged from either the first discharge unit 50 or the second discharge unit 60. In order to switch the water Y pumped from the wing pump 1 as described above, the wing pump 1 side is selectively set to either the second filtration unit 40 side or the wing pump 1 side is set to the second discharge unit 60 side. And a switchable switching valve 100 connected to the.

Specifically, the switching valve 100 of the second embodiment is disposed at a branch point between the flow path 71 and the bypass path 72 formed in the flow path forming member 70 as shown in FIG. As shown in FIGS. 17C and 17E, the wing pump 1 can be operated by the rotation operation (arrow shown) of the operation unit 100a disposed on the front surface of the flow path forming member 70. The flow of the pumped water Y is switched.
That is, this switching valve 100 is a rotary type direction switching valve, and by operating the operating portion 100a to the position shown in FIG. 17C, the wing pump 1 side is operated as shown in FIG. And the second filtration unit 40 side, while the operation unit 100a is switched to the position shown in FIG. 17D, so that the wing pump 1 side and the second discharge unit 60 side are connected. It has become.

For this reason, in the water purifier of the second embodiment, when the wing pump 1 is driven in a state where the operation unit 100a of the switching valve 100 is in the position shown in FIG. Y is guided to the second filtration unit 40 side by the switching valve 100, passes through the second filtration unit 40, and is then discharged from the first discharge unit 50.
On the other hand, when the wing pump 1 is driven in a state where the operation unit 100a of the switching valve 100 is at the position shown in FIG. 17E, the water Y pumped from the wing pump 1 is discharged by the switching valve 100 to the second discharge. Guided to the portion 60 side and discharged from the second discharge portion 60.

As described above, the water purifier according to the second embodiment is configured so that the water from the wing pump 1 can be obtained by simply switching the switching valve 100 without attaching or detaching the second filtration unit 40 or stopping the purification operation. Since Y is discharged from either the first discharge unit 50 or the second discharge unit 60, water having different degrees of purification can be obtained easily and efficiently.
In addition, it is economical because it is possible to avoid useless use of the hollow fiber membrane 41 when filtration by the second filtration unit 40 is not required, for example, when it is desired to obtain domestic water that does not require the water quality as that of drinking water.
Furthermore, it is possible to extend the life of the hollow fiber membrane 41 and maintain good filtration efficiency in the second filtration unit 40.

In addition, the water purifier of Embodiment 2 can select the degree of purification by one operation of switching the operation unit 100a of the switching valve 100, that is, whether or not the second filtration unit 40 is used. The switching operation is very easy to understand and extremely easy.
In addition, when the switching valve 100 is switched as shown in FIGS. 17D and 17E, the water Y pumped from the wing pump 1 does not reach the second filtration unit 40. It is also possible to minimize the use of the hollow fiber membrane 41 of the second filtration unit 40.
Furthermore, if the switching valve 100 is used, even if the entire operation is mistaken, the switching valve 100 is not closed, so there is no possibility that the load of the wing pump 1 becomes excessive.

By the way, as shown in FIGS. 13 to 16, the water purifier of the second embodiment is also at the time of water purification by the switching operation of the operation portion 80 c of the switching valve 80 shown in FIG. 10, as in the first embodiment. Switching at the time of cleaning of the first filtration unit 30 is performed.
Therefore, the water purifier according to the second embodiment can switch whether or not the second filtration unit 40 is used by one switching operation of the switching valve 83, and furthermore, one switching operation of the switching valve 100. Thus, it is possible to switch between water purification and cleaning of the first filtration unit 30 (see FIG. 18).
That is, in the water purifier of Embodiment 2, these switching operations are very easy for the user to understand and extremely easy. For this reason, it is very easy to use, and as a result, it can be expected to improve work efficiency.

In addition, although the water purification apparatus of this Embodiment 2 has the switching valve 80 as a washing | cleaning means, and the switching valve 100 which switches the presence or absence of use of the 2nd filtration part, it implements this invention. In order to obtain purified water, the first filtration unit 30, the wing pump 1, and the second filtration unit 40 are flowed through the water in this order. If the inside of the 1st filtration part 30 can be made to reversely flow with the water, the switching valve 80 and the switching valve 100 are integrated, and when the cleaning means obtains purified water, the first side is placed on the suction side of the wing pump 1. The output side of the filter unit 30 is connected, the input side of the second filter unit 40 is connected to the discharge side of the wing pump 1, and the second side is supplied from the discharge side of the wing pump 1 when flushing water flows. From the input side of the filter unit 40 and the output side thereof to the output side of the first filter unit 30 It may be a conversion freely switching valve.

[Embodiment 3]
Next, a water purifier according to Embodiment 3 of the present invention will be described with reference to FIGS. The third embodiment of the present invention is different from the first embodiment in that a switching valve 110 is used instead of the switching valve 80. Since other configurations are the same as those of the first embodiment, the description thereof is omitted. In addition, in order to make the switching valve 110 easy to understand, the switching valve 110 is enlarged and displayed in FIGS. 19 to 22.

As shown in FIG. 23, the switching valve 110 according to the third embodiment includes a spool-shaped valve body 111 and a substantially rectangular casing 112.
The valve body 111 is slidably disposed in the casing 112, and has three lands 111a, 111b, and 111c for constituting the three passages 110a, 110b, and 110c.
Further, the casing 112 has five ports, that is, a port 35A connected to the output side of the first filtration unit 30, a port 1A and a port 1D connected to the suction side of the wing pump 1, and a discharge of the wing pump 1. A port 1B connected to the side, a port 1C connected to the input side of the second filtration unit 40 or the second discharge unit 60 side is formed.
A packing (not shown) such as an O-ring is interposed between the lands 111a, 111b and 111c and the casing 112 to eliminate a gap.

Then, as shown in FIG. 23A, the switching valve 110 is in a state where the locking portion 111d of the valve body 111 is in contact with the casing 112, that is, in a state where the valve body 111 cannot be pushed into the casing 112 any more. The port 35A and the port 1A communicate with each other through the passage 110c, and the port 1B and the port 1C communicate with each other through the passage 110b.
On the other hand, as shown in FIG. 23B, when the land 111a of the valve body 111 is in contact with the casing 112, that is, when the valve body 111 cannot be pulled out from the casing 112 any more, 1C and port 1D communicate with each other through passage 110c, and port 1B and port 35A communicate with each other through passage 110b.

Therefore, in the water purifier of the third embodiment, when the valve body 111 of the switching valve 110 is pushed into a state where it cannot be pushed into the casing 112 any more and the wing pump 1 is driven, as shown in FIGS. 19 and 20. In addition, water W is introduced into the introduction pipe 10 from a water source. The water introduced into the introduction pipe 10 passes through the first filtration unit 30 via the chlorine dioxide supply unit 20, and then reaches the port 35A of the switching valve 110 and is guided to the port 1A by the passage 110a. After that, it is sucked into the suction port of the wing pump 1 and is pumped from the discharge port. Further, the water pumped from the wing pump 1 reaches the port 1B of the switching valve 110 and is guided to the port 1C through the passage 110b. When the cock 61 is closed and the cock 51 is opened, the water from the port 1C of the switching valve 110 passes through the second filtration unit 40 and is then discharged from the first discharge unit 50 (FIG. 19). On the other hand, when the cock 51 is closed and the cock 61 is opened, water from the port 1C of the switching valve 110 is discharged from the second discharge portion 60 (FIG. 20).
That is, in the water purifier 3 of the present embodiment, at the time of water purification, a water purification path (FIG. 1) for obtaining purified water in the order of the first filtration unit 30, the wing pump 1, the second filtration unit 40, and the first discharge unit 50. 19) Or the water purification path (FIG. 20) which obtains purified water in the order of the 1st filtration part 30, the wing pump 1, and the 2nd discharge part 60 is formed.

On the other hand, in the water purifier of the third embodiment, when the valve body 111 of the switching valve 110 is pulled out to a state where it can no longer be pulled out from the casing 112 and the wing pump 1 is driven, as shown in FIG. When the cock 51 is closed and the cock 61 is opened, the washing water stored in the bucket or the like is sucked from the second discharge part 60 and flows backward, and reaches the port 1C of the switching valve 110. The wash water that has reached the port 1C of the switching valve 110 is guided to the port 1D by the passage 110c, and then is sucked into the suction port of the wing pump 1 and is pumped from the discharge port. Further, the wash water pumped from the wing pump 1 reaches the port 1 </ b> B of the switching valve 110, is guided to the port 35 </ b> A by the passage 110 b, and then reaches the first filtration unit 30. Furthermore, the wash water that has reached the first filtration unit 30 flows from the outflow part 33C of the first filtration unit 30 and permeates from the inside to the outside of the filter medium 31 of the first filtration unit 30, and then the introduction pipe It flows out of the attachment port 33A and is discharged to the outside.
And when washing water permeate | transmits from the inner side of the filter medium 31 to the outer side, impurities, such as dust and sand which adhered to the filter medium 31 by the pressure of the wing pump 1, are removed.
That is, in the water purifier of the third embodiment, at the time of cleaning, a cleaning path (FIG. 22) is formed that causes the water guided to the wing pump 1 to flow backward to the first filtering unit 30 in the direction in which the purified water is obtained. It has become so.

In addition, as shown in FIG. 21, when the cock 61 is closed and the cock 51 is opened, the second filtration unit after the cleaning water stored in the bucket or the like is sucked from the first discharge unit 50 40 flows in the direction opposite to that during water purification, and reaches port 1C of switching valve 110. The wash water that has reached the port 1C of the switching valve 110 is guided to the port 1D by the passage 110c, and then is sucked into the suction port of the wing pump 1 and is pumped from the discharge port. Further, the wash water pumped from the wing pump 1 reaches the port 1 </ b> B of the switching valve 110, is guided to the port 35 </ b> A by the passage 110 b, and then reaches the first filtration unit 30. Furthermore, the wash water that has reached the first filtration unit 30 flows from the outflow part 33C of the first filtration unit 30 and permeates from the inside to the outside of the filter medium 31 of the first filtration unit 30, and then the introduction pipe It flows out of the attachment port 33A and is discharged to the outside.
When the washing water permeates from the inside of the hollow fiber membrane 41 of the second filtration unit 40 to the outside by the pressure of the wing pump 1, fine impurities adhering to the hollow fiber membrane 41 are removed, and the washing water When passing through from the inside to the outside of the filter medium 31 of the first filter section 30, impurities such as dust and sand attached to the filter medium 31 are removed.
That is, according to the water purification apparatus of the third embodiment, the water guided to the second filtration unit 40 by the wing pump 1 is obtained in the direction in which the purified water is obtained in the second filtration unit and the first filtration unit 30. Thus, a cleaning path (FIG. 21) for backflow is also formed, so that the first filtering unit 30 and the second filtering unit 40 can be cleaned.

  Therefore, the water purifier of the third embodiment flows water in the order of the first filter 30, the wing pump 1, and the second filter 40 when obtaining purified water, and at the time of washing. When the purified water is obtained as a cleaning means for backflowing the inside of the first filtration unit 30 with the water guided to the wing pump 1, the output side of the first filtration unit 30 is connected to the suction side of the wing pump 1 In addition, when flowing the cleaning water, a switchable switching valve 80 that flows from the discharge side of the wing pump 1 to the output side of the first filtration unit 30 is provided.

  Here, when the water guided to the wing pump 1 is caused to flow backward in the direction in which the purified water is obtained in the first filtration unit 30, at least the water pressurized by the wing pump 1 is on the first filtration unit 30 side. However, it does not mean that another switching valve 110 or a pipe line is provided, and it is sufficient that a reverse flow can be formed.

  Similarly, the water purifier of the third embodiment flows water in the order of the first filtering unit 30, the wing pump 1, and the second filtering unit 40 when obtaining purified water. In this case, a cleaning unit is provided that reversely flows the inside of the second filtration unit 30 with the water guided to the second filtration unit 40 by the wing pump 1, and the cleaning unit is provided with a wing when obtaining purified water. When the suction side of the pump 1 is connected to the output side of the first filtration unit 30 and the discharge side is connected to the input side of the second filtration unit 40, It connects to the input side of the 2nd filtration part 40 to the side, and connects from the discharge side of the wing pump 1 to the output side of the 1st filtration part 30, and flows washing water there.

  Similarly, when the inside of the second filtration unit 30 is caused to flow backward by the water guided to the second filtration unit 40 by the wing pump 1, at least the water pressurized by the wing pump 1 is supplied to the second filtration unit 30. It is sufficient that there is a path that flows backward on the filtration unit 40 side, and it does not mean that another switching valve 110 or a pipe line is provided, and it is only necessary to form a reverse flow.

Therefore, the water purifier according to the third embodiment cleans the first filtration unit 30 in the direction opposite to that during the water purification even when the pressure loss has increased due to clogging of the filtering material 31 of the first filtration unit 30. By flowing water, clogging of the filter medium 31 can be reduced and the filtration performance can be recovered, and furthermore, pressure loss has increased due to clogging of the hollow fiber membrane 41 of the second filtration unit 40 However, it is possible to reduce the clogging of the hollow fiber membrane 41 of the second filtration unit 40 and restore the filterability.
That is, according to the water purifier of the third embodiment, the filtration efficiency in the first filtration unit 30 can be maintained well for a long time, and the filter medium 31 of the first filtration unit 30 is made long lasting. You can also In addition, it is possible to maintain the filtration efficiency in the second filtration unit 40 well for a long time, and it is also possible to extend the hollow fiber membrane 41 of the second filtration unit.
Furthermore, the water purifier of the third embodiment uses the pressure of the wing pump 1 to clean the first filtering unit 30 and the second filtering unit 40 without removing the filtering material 31 and the hollow fiber membrane 41. Therefore, the filtration performance of the filter medium 31 and the hollow fiber membrane 41 can be recovered easily and efficiently. In addition, since a dedicated pump for cleaning is not required, the weight of the apparatus can be reduced.

In addition, as shown in FIG. 23 (a), the switching valve 80 of the third embodiment is configured such that communication between the port 1D and the port 1C is blocked by the land 111c during water purification. As shown in FIG. 23B, at the time of cleaning, the communication between the port 1A and the port 35A is blocked by the land 111b.
For this reason, according to the water purifier of this Embodiment 3, as shown in FIG. 19 thru | or FIG. 22, switching at the time of water purification and washing | cleaning can be performed only by one operation of switching the switching valve 110. FIG.
That is, in the water purifier of Embodiment 3, the switching operation between the purified water and the cleaning is very easy to understand, and the switching between the purified water and the cleaning can be performed very easily. Therefore, the water purifier according to Embodiment 3 is easy to use.
When carrying out the present invention, the port 35A connected to the output side of the first filtration unit 30, the port 1A and port 1D connected to the suction side of the wing pump 1, and the discharge side of the wing pump 1 are used. The port 1B to be connected and the port 1C to be connected to the input side of the second filtration unit 40 or the second discharge unit 60 side, and at the time of water purification, the port 35A and the port 1A are the port 1B and the port 1C. If the switching valve is such that the port 1C and the port 1D communicate with each other and the port 1B and the port 35A communicate with each other at the time of cleaning, the position of each port, the valve body, the shape of the casing, etc. The mode is not limited to the mode of the switching valve 110 of the third embodiment, and may be a mode of a switching valve in which a passage communicating between the ports is formed in the cylindrical valve body 111, for example. .

The water purifier of each of the above embodiments is assumed to be used in the event of a disaster such as an earthquake or outdoors, and water W such as rivers, lakes, dams, reservoirs, rainwater, school pools, irrigation water, etc. In the case of using water as a water source, using water supply as a water source and using a filter medium 31 such as silver impregnated activated carbon, ceramics, ion exchange resin, etc. It can also be used as a water purifier for obtaining delicious water.
Moreover, when implementing this invention, about arrangement | positioning, a shape, a magnitude | size, a connection relationship, etc. of each equipment which comprises a water purifier, it is not limited to said each embodiment.

1 Wing pump 10 Introduction pipe (introduction part)
11 Strainer 20 Chlorine dioxide supply part 21 Chlorine dioxide generator 22 Casing 22a Bottom part 22b Opening part (supply port)
23 Lid 30 First filter part 31 Filter medium 32 Filter medium cartridge 40 Second filter part 41 Hollow fiber membrane 50 First discharge part 51, 61 Cock 60 Second discharge part 80, 83, 100, 110 Switching Valve 90 Mounting frame 92b Grip part 93 Caster

Claims (5)

A human-powered reciprocating pump that sucks water and pumps the sucked water;
An introduction part that is disposed upstream of the reciprocating pump and introduces water from a water source by suction of the reciprocating pump;
A chlorine dioxide supply section that is disposed on the upstream side of the reciprocating pump on the downstream side of the introduction section and supplies chlorine dioxide for sterilizing water introduced in the introduction section;
At the downstream side of the chlorine dioxide supply unit, disposed on the upstream side of the reciprocating pump, removes impurities that reduce the load on the next filtration unit contained in the water supplied with the chlorine dioxide, and removes the dioxide dioxide. A first filtration part having a filter medium for reducing the chlorine content;
The reciprocating pump has a hollow fiber membrane that is disposed downstream of the reciprocating pump and removes finer impurities than the filtering material of the first filtration unit that filters water pumped from the reciprocating pump. A second filtration unit for removing impurities having a maximum length or diameter of 0.1 μm or more contained in water pumped from
When obtaining purified water, water is flowed in the order of the first filtration unit, the reciprocating pump, and the second filtration unit, and at the time of cleaning, water is introduced into the reciprocating pump. A water purifier comprising a cleaning means for backflowing the inside of the first filtration unit. A human-powered reciprocating pump that sucks water and pumps the sucked water;
An introduction part that is disposed upstream of the reciprocating pump and introduces water from a water source by suction of the reciprocating pump;
A chlorine dioxide supply section that is disposed downstream of the introduction section and upstream of the human-powered reciprocating pump, and supplies chlorine dioxide for sterilizing water introduced in the introduction section;
The chlorine dioxide is disposed downstream of the chlorine dioxide supply unit and upstream of the reciprocating pump, and removes impurities that reduce the load of the next filtration unit contained in the water supplied with the chlorine dioxide, and the chlorine dioxide. A first filtration part having a filter medium for reducing the content of
The reciprocating pump has a hollow fiber membrane that is disposed downstream of the reciprocating pump and removes finer impurities than the filtering material of the first filtration unit that filters water pumped from the reciprocating pump. A second filtration unit for removing impurities having a maximum length or diameter of 0.1 μm or more contained in water pumped from
When obtaining purified water, water is flowed in the order of the first filtration unit, the reciprocating pump, and the second filtration unit, and when cleaning, the second filtration is performed by the reciprocating pump. A water purifier comprising: cleaning means for causing the inside of the second filtration part to flow backward with water guided to the part. The cleaning means connects the output side of the first filtration unit to the suction side of the reciprocating pump when obtaining purified water, and from the discharge side of the reciprocating pump when flowing the cleaning water. The water purifier according to claim 1, further comprising a switchable switching valve that flows to an output side of the first filtration unit. When the cleaning means obtains purified water, the output side of the first filtration unit is connected to the suction side of the reciprocating pump, and the input side of the second filtration unit is connected to the discharge side of the reciprocating pump. In addition, when washing water is allowed to flow, the flow can be freely switched from the discharge side of the reciprocating pump to the input side of the second filtration unit and from the output side to the output side of the first filtration unit. The water purifier according to claim 1, further comprising a switching valve. When the cleaning means obtains purified water, the output side of the first filtration unit is connected to the suction side of the reciprocating pump, and the second filtration unit is connected to the discharge side of the reciprocating pump. When the input side is connected and the washing water flows, the input side of the second filtration unit is connected to the suction side of the reciprocating pump, and the first filtration is performed from the discharge side of the reciprocating pump. The water purifier according to claim 2, wherein the water purifier is connected to the output side of the unit and the washing water flows therethrough.

Images