JPH0985258A - Emergency water purifying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure drinking water even in an emergency. SOLUTION: An engine pump 12 sucking water of a water source to allow the same to flow downstream, a flocculant introducing pipe 14 guiding a flocculant to water under the negative pressure caused by the suction of the engine pump 12 and a filter 20 filtering water allowed to flow by the engine pump 12 are provided. Further, a sterilizing apparatus 50 wherein solid sodium hypochlorite is arranged in the passage of the water allowed to flow by the engine pump 12 and gradually dissolved by the flowing water to be mixed with the water is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency water purification device.

[0002]

2. Description of the Related Art There is a conventional water purifier as shown in FIG. That is, the well water is pumped up by the electric pump 100, and the coagulant (liquid) in the coagulant container 102 is guided by the electric pump 106 and mixed therewith,
It is filtered by the filter 110. Then, the chlorine storage unit 112
Electric pump 1 for liquid chlorine (sodium hypochlorite)
It is led at 14 and mixed to make it drinkable.

[0003]

By the way, recently, the importance of preparation for an emergency such as a large earthquake has been recognized.
Further, it is extremely important to secure drinking water in such an emergency, and it is necessary to regularly secure an apparatus for that purpose. However, since the above-mentioned conventional water purifier uses an electric pump, it is completely useless when the supply of electricity is stopped in an emergency and does not serve as a means for securing drinking water in an emergency. .

Therefore, it is an object of the present invention to provide a water purifying device which can secure drinking water even in an emergency.

[0005]

In order to solve the above problems, an invention according to claim 1 is provided with an engine pump that sucks water from a water source and flows it to a downstream side, and an upstream side of the engine pump. A coagulant introduction path that guides a coagulant to the water by negative pressure due to suction of the engine pump, and a filter that is provided on the downstream side of the engine pump and filters water that is flowed by the engine pump. Characterize. Here, examples of the "filter" include those using a reverse osmosis membrane, those using an ultrafiltration membrane, and those using a microfiltration membrane.

In the present invention, the water from the water source is sucked by the engine pump, and the negative pressure at the time of suction by the engine pump causes the coagulant to join the water through the coagulant introduction path. Then, the water in a condensed state is filtered by a filter. As described above, in the present invention, the water of the water source can be used for drinking without using electricity, and it is also suitable for emergency use in which the supply of electricity is stopped. In addition, since the coagulant is also supplied by the engine pump, there is an advantage in that no electricity is used. Also, in order to both suck water from the water source and mix the coagulant with the engine pump,
The equipment can be simplified. Further, when the water mixed with the coagulant is strongly stirred when flowing through the inside of the engine pump, the subsequent filtration is effectively performed. By vigorously and rapidly stirring, it is possible to shorten the piping for the subsequent slow stirring, and the device can be made compact.

The invention according to claim 2 is the invention according to claim 1, wherein solid hypochlorous acid is provided in the flow path of water which is provided on the downstream side of the engine pump and is flowed by the engine pump. It is characterized in that it has a sterilizing apparatus in which sodium is installed, and the solid sodium hypochlorite is gradually dissolved by the flowing water and mixed into the water.

The present invention has the following advantages over the case of mixing an aqueous solution of sodium hypochlorite. That is, in the case of mixing an aqueous solution of sodium hypochlorite, a special device for mixing the solution may be required. For example, it is a container that stores an aqueous solution of sodium hypochlorite, a pipe that communicates with the container, and a pump that joins water through the pipe. However, in the present invention, a sterilizer is installed in the water flow path, and the flowing water gradually dissolves and mixes solid sodium hypochlorite in the sterilizer. No complicated device is required, and the device can be simplified.

The invention according to claim 3 is the invention according to claim 1 or claim 2, wherein a backwashing mechanism for flowing water in the inside of the filter in a direction opposite to a normal direction is added. It is characterized by

After long-term use, filtered impurities accumulate in the filter. As a result, the filtration performance will decrease. However, in the present invention, since the backwashing mechanism is added, the backwashing mechanism causes water to flow in the filter in the direction opposite to the normal direction, thereby removing the accumulated impurities. Therefore, the filtration performance of the filter can be maintained high. And it becomes possible to use it for a long time.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. This water purification device can also use considerably dirty water such as ponds and pools. An engine pump 12 is provided downstream of the raw water introduction pipe 10 installed in a water source such as a pond. The engine pump 12 burns gasoline or the like as a fuel, sucks raw water by the energy of the burning and sends it to the downstream side.

A coagulant introducing pipe (coagulant introducing passage) 16 is joined to the raw water introducing pipe 10 (upstream of the engine pump 12). The coagulant introducing pipe 16 guides the coagulant accommodated in the coagulant accommodating portion 14 to the raw water introducing pipe 16.
However, no special mechanism (power) for guiding the coagulant to the raw water introduction pipe 16 is provided. Then, the coagulant is guided to the raw water introduction pipe 16 by the negative pressure generated when the raw water is sucked by the engine pump 12 described above.

A main conduit 22 on the downstream side of the engine pump 12.
Is equipped with a filter 20. The filter 20 is for filtering water through various membranes. An activated carbon filter 40 is provided on the downstream side of the filter 20. The downstream side is branched into two, and one side is provided with a throttle valve 58,
A flow rate adjusting valve 56 and a sterilizing device 50 are provided on the other side, and they are combined on the downstream side and used as drinking water.

In the vicinity of the filter 20, the following piping is provided. As shown in FIG. 2, a main pipe line (upstream side) 22 a on the downstream side of the engine pump 12 is divided into a first pipe line 31 and a second pipe line 32 via a switching valve 24. The first conduit 31 is divided into the third conduit 33 and the drain conduit 37 via the switching valve 25. Third conduit 33
Is connected to the inflow portion 21a of the filter 20. The second pipeline 32 is a main pipeline (downstream side) 22b at the confluence portion 26.
The main conduit (downstream side) 22b is led to the activated carbon filter 40 as described above. Filter 20
The fourth pipeline 34 is connected to the outflow portion 21b of the fourth pipeline 34, and the fourth pipeline 34 merges with the second pipeline 32 and the main pipeline (downstream side) 22b at the merge section 26, and also the fifth pipeline. Three
It is connected to the drainage pipeline 37 via 5. An on-off valve 27 is provided in the middle of the main pipeline (downstream side) 22b. An opening / closing valve 28 is also provided in the middle of the fifth pipe 35.

As shown in FIG. 3, the sterilizer 50 has a substantially cylindrical casing 51, and an inflow portion 52a is formed on one side of the casing 51 and an outflow portion 52b on the other side.
Are formed. Inside the casing 51, a medicine cylinder 53 formed of a cylindrical wire mesh is housed, and in the medicine cylinder 53, solid sodium hypochlorite (NaOC) is contained.
l) is stored. Then, sodium hypochlorite is dissolved and mixed in the water flowing into the casing 51 from the inflow portion 52a, and the water mixed with the sodium hypochlorite is allowed to flow out from the outflow portion 52b.

Next, the operation of this device will be described.
As shown in FIG. 1, raw water such as pond water is used as the engine pump 1.
It is sucked by 2, and the negative pressure at that time causes the coagulant in the coagulant storage portion 14 to be guided to the raw water introduction pipe 10 through the coagulant introduction pipe 16. Then, the raw water sucked from the pond and the like in the engine pump 12 and the coagulant are rapidly stirred, and are slowly stirred in the main pipe line on the downstream side of the engine pump 12 to promote the formation of flocs. The water in which the flocs are formed is filtered by the filter 20 and further filtered by the activated carbon filter 40. On the downstream side, part of the water is sterilizer 50.
Sodium hypochlorite is dissolved and sterilized by flowing through, and it is served for drinking. At that time, by operating the throttle valve 58 and the flow rate adjusting valve 56, the ratio of the water flowing to the sterilization device 50 is adjusted, and the concentration of sodium hypochlorite in the water supplied for drinking is made appropriate. Can be adjusted.

In the vicinity of the filter 20 (see FIG. 2), there are the following actions. During normal operation, the switching valves 24 and 25 and the opening / closing valves 27 and 28 are switched so that FIG.
As shown in, the water flowing through the main pipeline (upstream side) 22a flows into the filter 20 from the inflow portion 21a of the filter 20 via the first pipeline 31 and the third pipeline 33, and then, It flows out from the outflow portion 21b of the filter 20 and flows from the fourth pipe 34 to the main pipe (downstream side) 22b. On the other hand, when impurities are accumulated in the filter 20 after being used for a long time, the switching valves 24, 2
5, the on-off valves 27, 28 are switched to the backwash state shown in FIG. 4 (b). That is, the water flowing through the main pipe line (upstream side) 22 a flows into the filter 20 from the outflow portion 21 b of the filter 20 via the second pipe line 32 and the fourth pipe line 34, and flows inside the filter 20. Flows in the opposite direction to normal. Then, it flows out from the inflow portion 21 a, is discharged from the drainage pipe 37 through the third pipe 33. By doing so, the filter 2
The impurities accumulated in 0 are floated and removed. After the backwashing state, the switching valves 24 and 25 and the open / close valve 2 are temporarily
By switching 7 and 28, the washing state shown in FIG. Water from the main pipeline (upstream side) 22a is supplied to the first pipeline 3
1, through the third conduit 33 from the inflow portion 21a into the filter 20, flows in the same direction as in the normal time, flows out from the outflow portion 21b, the fourth conduit 34, the fifth conduit The water is drained from the drainage pipeline 37 via 35. As a result, the impurities floating due to the backwashing state are washed away. Then, after that, the normal use described above is performed. Then, the performance of the filter 20 is restored again, and the appropriately purified water flows to the downstream side. In this way, in this water purifier, the performance of the filter 20 can be kept high by the backwash mechanism and the water washing mechanism, and the purifying action of the raw water can be kept high.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing an embodiment of the present invention.

FIG. 2 is a diagram showing the vicinity of the filter in FIG.

FIG. 3 is an enlarged view of the sterilizer in FIG.

FIG. 4 is a diagram showing the operation of the mechanism of FIG.

FIG. 5 is a block diagram showing a conventional water purifier.

[Explanation of symbols]

 12 engine pump 14 coagulant introduction pipe 20 filter

Claims (3)

[Claims] 1. An engine pump that sucks water from a water source and flows it downstream, and a coagulant introduction path that is provided on the upstream side of the engine pump and that guides the coagulant to the water by negative pressure generated by the suction of the engine pump. And a filter provided downstream of the engine pump for filtering water flowing by the engine pump. 2. The emergency water purifier according to claim 1, wherein solid sodium hypochlorite is installed in a flow path of water which is provided on the downstream side of the engine pump and is flowed by the engine pump. An emergency water purification apparatus having a sterilizing device for gradually dissolving the solid sodium hypochlorite by the flowing water and mixing it into the water. 3. The emergency water purifier according to claim 1 or 2, further comprising a backwashing mechanism for flowing water in the filter in a direction opposite to a normal direction. Emergency water purifier.