JP2003080243A - Method and apparatus for removing suspension - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clean a water surface and to maintain a waterside landscape by removing not only suspensions floating on the water surface but also contaminated froth incapable of being easily caught. SOLUTION: This suspension removing apparatus consists of a skimmer 2 which takes water from the water surface, an inducing pipe 3 which guides the suspensions 12 carried by the taken surface water 10 to the underside of the water surface, a filter case 5 in which a refuse collecting basket 4 is housed, a pump housing box 7 which is adapted to allow filtrate to be sucked by a submersible pump 8, etc. The suspended refuse rides on a main stream 14 and is caught in the refuse collecting basket 4. When the froth 12A is withdrawn into the filter case 5 sharply enlarged in its sectional area while the suction force of the pump is acted thereon, the froth is deviated from the main stream 14 by a secondary stream 15. The froth is repelled by the negative pressure in the space and the froth slag 12a produced by crushing of froth films is caught separately from the suspended refuse 12B. The cleaned water is returned to lake and not only the cleaning of the water surface but also the restoration of the water quality area achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for removing suspended solids, and more specifically, it sucks suspended solids floating on the surface of water together with surface water to filter the purified water and returns the purified water to the original state. The present invention relates to a water purification process that can be separately collected from other floating waste.

[0002]

2. Description of the Related Art In places where the flow tends to be stagnant, such as ponds, lakes, swamps, and reservoirs, it is important from the viewpoint of environmental protection and landscape maintenance to proactively conserve water quality more than rivers. There are several causes of water pollution, but it goes without saying that some are naturally occurring and others are related to human activities.
By the way, although artificial ponds such as gardens and golf courses are designed with flow, natural pollution is unavoidable and often makes it unattractive. The most visible thing is not only the transparency but also the
Water is polluted by suspended solids.

At the place where water accumulates, fallen leaves and lawn cuttings float, and a large amount of foam floats on the water surface depending on the season. The latter is a phenomenon often seen in the early spring in the stagnation part of the pond where the stream pours, but this is often the remains of microorganisms that abruptly generated in large numbers due to warming.

In any case, as a device for removing suspended matter polluting the surface layer, there is an example of using a commercially available skimmer for removing scum in a septic tank or the like. Such a skimmer is already well known as described in JP-A-5-113497.

[0005]

The skimmer is floated on the surface of the water, takes in floating floating substances together with surface water, pumps the intake water to the land by a pump, filters it through a filter, and then purifies the purified water to the original pond or the like. Waste will be collected and water quality will be maintained by following the process of pouring into.
Such an example is also disclosed in Japanese Patent Laid-Open No. 8-201212.

By the way, in this type of purifying device,
The components other than the skimmer floated on the surface of the water are mainly filters and pumps. These are often heavy,
Also, it will be installed on land considering the convenience of maintenance and inspection work. As a result, it is difficult to change the intake position and the return position easily, the purification range of the pond becomes partial, and it takes a long time for the entire purification. Further, as described in Japanese Patent Application Laid-Open No. 11-128916 and Japanese Patent Application Laid-Open No. 5-113497, a flotation device may be required.

On the other hand, in order to float the skimmer at a distance or change its position freely, a long hose or the like must be used between the skimmer and the pump or the filter. In that case, a high-pressure pump is required, measures are taken to prevent the water conveyance system from becoming clogged with dust, and this leads to increased power consumption and more complicated equipment.

In addition, in order to install the above-mentioned pumps and filters, a considerable amount of land construction is required. However, depending on the shape of the pond, ups and downs of the waterfront, and the condition of planting, it is often difficult to find a suitable spot for installing pumps. In addition, in golf courses and gardens, installing machinery, equipment, and devices on the shore of a pond will seriously damage the landscape. After all, land-based purification systems have little opportunity to use, especially in places where you want to preserve the natural landscape.

By the way, the above-mentioned foam easily causes clogging if the filter cloth has fine meshes, and if it is coarse like a wire mesh, it passes through and is returned to the pond as it is. Floating materials that can be collected are limited to relatively large refuse, such as those that do not easily lose their shape or that do not break or shatter when deformed. Therefore, it is difficult to remove fine suspended matter such as foam floating on the surface,
Purifying the water surface is not easy.

The present invention has been made in view of the above problems, and an object of the present invention is to remove not only dust such as floating lawn cutting wastes but also water surface polluted foam that is not easy to be caught, and the foam to other Make it possible to separate it from floating trash and capture it, to enable submersible installation of pumps and filters to avoid onshore construction, and not to disturb the landscape of the shore of a pond or lake. It is an object of the present invention to provide a method and an apparatus for removing suspended matter that realizes that the apparatus can be installed in a place or easily repositioned, and that energy saving and size reduction of the entire apparatus can be easily achieved.

[0011]

DISCLOSURE OF THE INVENTION The present invention is directed to a water purification method using a skimmer in which suspended matter floating on a water surface or the like is taken in together with surface water and filtered, and purified water from which suspended matter is removed is returned to the original state. Applied to. With respect to the feature, referring to FIG. 1, the foam 12A floating on the water surface 11 is taken in by the skimmer 2 together with the surface water 10 at atmospheric pressure. The suction force of the pump is applied to the water intake, and the water is drawn into the space 5 where the cross-sectional area rapidly expands. The secondary flow 15 generated there causes the foam to deviate from the main flow 14 towards the pump and to be repelled by the negative pressure created in the space. Then, the bubble slag 12a after the popping is adhered to the upper wall portion of the space so as to be captured.

The waste collection basket 4 for collecting the floating waste 12B is installed in the space 5 which is rapidly expanded, or the waste collection basket 4A is attached to the discharge port 6b of the submersible pump 6 as shown in FIG. The floating debris 12B taken by the skimmer 2 together with the foam 12A is collected.

The invention of the trapping device, referring to FIG. 1, is a suspended matter 12 that accompanies the surface water 10 taken in from the skimmer 2.
Pipe 3 that guides water below the surface of the water, a dust collection basket 4 that is opened on the side of the introduction pipe and extends in the flow direction and that is connected to the introduction pipe 3 in water, and filtered water that has passed through this filter case. To the submersible pump 6 so as to direct the submersible pump 6 to the submersible pump 6 and a pump housing which allows the submersible pump 6 to suck the filtered water supplied from the submerged pipe 8 and filled with water. It is provided with a box 7 and a purified water delivery pipe 18 for discharging the discharge water of the submersible pump 6 to the outside of the pump housing box.

The introduction pipe 3 is provided with an elbow portion 3a so that the filter case 5 can be installed substantially horizontally. Further, it is preferable to interpose an angle adjusting member 30 (see FIG. 5B) in the introduction pipe 3. In addition, a valve 9 (see FIG. 1) for adjusting the flow rate of the submersible pump 6 can be interposed before reaching the pump housing box 7.

The filter case 5 or the pump housing box 7 is provided with air vent holes 5a and 7a. The filter case 5 has a larger flow passage cross-sectional area than the introduction pipe 3.

As shown in FIG. 2, inside the filter case 5 or the pump housing box 7, there are provided nets 21 and 22 for adhering the foam slag 12a after it has been splashed by the negative pressure generated during the operation of the submersible pump 6. It is preferable to set. To the outlet of the purified water delivery pipe 18A, a fountain pipe 24 or a jet pipe 25 for generating a superficial flow on the water surface is connected.

The filter case 5 and the pump housing box 7
As shown in FIG. 4, the floats 27 and 28 may be attached to the above so that the entire apparatus can float in water.

As shown in FIG. 5 (a), the water guiding pipe 8 connected to the pump housing box 7 has a plurality of branch pipes 8a,
8a is provided so that filtered water from the filter case 5 connected to each branch pipe is guided to one pump storage box 7. Further, as shown in (b), a plurality of water guiding pipes 8A, 8A may be connected to the pump housing box 7 so that the filtered water from each water guiding pipe is guided to one pump housing box 7.

[0019]

In the method for removing suspended matter according to the present invention, the bubbles accompanying the surface water taken in at atmospheric pressure are guided to the space where negative pressure is applied, and the pressure difference acting inside and outside the bubble film is used. Make it pop. The light debris produced by the collapse of the foam film is deviated from the main stream by being placed on the secondary flow generated by the rapid expansion of the cross section.
By attaching this to the wall surface, etc., it is captured separately from other floating debris that has flown on the mainstream. By removing polluted foam from the water surface, the water quality can be maintained and restored, greatly contributing to the maintenance of the waterside landscape.

The floating debris taken in by the skimmer along with the foam can be collected by a debris collection basket installed in the space that expands rapidly. Apart from this, floating waste can also be collected with a waste collection cage attached to the outlet of the submersible pump.

The above-mentioned effects are also exhibited in the invention relating to the removing device. In addition, coarse floating debris other than foam rides on the main stream and can be collected in a garbage collection basket. The garbage collection basket easily passes bubbles and debris, but even in the downstream pump storage box, debris is attached to the ceiling wall surface where the flow is stagnant and the debris is captured. Both water polluted foam and floating dust can be reliably removed, and the submersible pump can return only the purified water in the pump storage box to the water source.

Most of the components of the apparatus are submerged in water, and only the top surface of the small skimmer is exposed to the eyes, so that the landscape of a garden or other pond is not adversely affected. Since there is nothing to install on land, there is no need for onshore construction, and it is easy to place the skimmer on the desired waterside or move it to any place. There is no need for a device that collects or scrapes suspended matter, and the trouble of setting it up is eliminated. Since the pump can always move with the skimmer, the distance between the two can be shortened as much as possible, pressure loss in the pipeline can be minimized, and the device can be downsized and shortened and power consumption can be reduced.

If an elbow portion is formed on the introduction pipe,
It is easy to install the filter case horizontally in water. If an angle adjusting member is interposed in the introduction pipe, the posture of the skimmer can be easily adjusted to the water surface. If the filter case is placed horizontally, it is easy to remove light foam and its debris from the mainstream and float it up, and it is possible to separate and collect the suspended solids collected in the garbage collection basket.

By interposing a valve for adjusting the flow rate of the submersible pump before reaching the pump housing box, the negative pressure generated in the filter case can be adjusted in advance to a pressure sufficient to cause the bubbles to burst. It is convenient to store.

If the filter case or the pump housing box is provided with an air vent hole, the air that has been blown up by bubbles and the air that has been trapped during water intake can be automatically removed when the submersible pump is stopped. If the pump is stopped at an appropriate time interval, it is possible to prevent the filter case and the pump housing box from floating due to excessively accumulated air, and to stabilize the operation of the device.

If the flow passage cross-sectional area of the filter case is made larger than that of the introduction pipe, the generation of a secondary flow accompanying the rapid expansion of the flow is promoted, and light substances such as foam, slag, and entrained air are discharged from the main stream. It is easy to deviate. If foam or debris becomes stagnant, it tends to adhere to the wall, increasing the capture rate.

If a net is provided above the inside of the filter case and the pump housing box, the trapping rate can be increased as compared with the case where the slag clinging to the net is attached and is directly attached to the wall. If you replace the net, you can remove all of the foam lumps at once, so you can save the trouble of cleaning the filter case and the pump housing box.

If a fountain pipe or a jet pipe is connected to the outlet of the purified water delivery pipe, not only the purified water is returned to the original source, but also the returned water is used to enable fountain aeration. Alternatively, the movement of surface water can be stimulated to promote the approach of suspended solids to the skimmer.

If the float is attached to the filter case, the pump housing box or the like so that the whole apparatus is separated from the water bottom, the whole apparatus can be easily moved underwater by simply pulling the rope. If the filter case is equipped with a small propeller such as a propeller, it can be moved by remote control in a large pond.

If the water guiding pipe connected to the pump housing box has a plurality of branch pipes, or if a plurality of water guiding pipes are themselves connected, the flow from each skimmer connected to each branch pipe or water guiding pipe is stored in one pump. Can lead to the box. In this case, since the number of movable devices is kept to a minimum, operation management becomes easy, and on the other hand, the suspended solid collection capability can be doubled.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a method and apparatus for removing suspended matter according to the present invention will be described in detail with reference to the drawings showing the embodiments thereof. FIG. 1 is an overall configuration diagram of an apparatus adapted to take floating substances floating on a water surface and the like together with surface water and filter the purified water from which the floating substances have been removed to return to the original water. This is for cleaning water surfaces such as ponds, lakes, swamps, and reservoirs that tend to stagnate, and at the same time for water quality conservation and landscape maintenance.

The underwater installation type skimmer type removing device 1 shown in the figure is an example of a device capable of capturing bubbles as well as dust floating on the water surface. This causes a skimmer 2 floated on the water surface, an introduction pipe 3 having an elbow portion, a filter case 5 in which a dust collection basket 4 is installed, a water flow for transporting dust, and a negative pressure is generated in the filter case. A submersible pump 6, a pump housing box 7 storing the submersible pump, a water pipe 8 connecting the box and the filter case, and a pump flow rate adjusting valve 9
It consists of

Next, the individual elements will be described in detail.
The skimmer 2 is a well-known one used for removing scum in a septic tank or the like, as described in the section of the prior art. It has a water intake lip 2a having a shape that makes it easy to take in the surface water 10, and even if the water level changes a little, the float 2b attached to the lower surface of the lip normally causes the water surface 11
The water intake device has a structure in which it can be floated near, and a floating margin H for that purpose is secured.

The introduction pipe 3 causes the surface water 10 taken in from the skimmer 2 and the suspended matter 12 flowing in along with the surface water 10 to flow down below the water surface. An elbow portion 3a is provided in the lower part of this, and surface water and suspended matter can be guided into the filter case 5 installed in a substantially horizontal posture without following a complicated path. Although air is also entrained during water intake, if the pipe is lengthened up and down, a considerable amount of air is levitated in the form of bubbles 13 before passing through the elbow portion 3a, and unnecessary air is brought in. You can keep the amount down.

The filter case 5 is connected to the above-mentioned introduction pipe 3 in water to form one room. this is,
It can collect relatively large floating debris, especially those that are not easily broken or shattered even when it loses its shape, and in addition to floating debris, it can also capture floating debris. Therefore, the cross-sectional area of the flow path is larger than that of the introduction pipe 3, and the waste collection basket 4 that opens in the introduction pipe side and extends in the flow direction therein.
It is housed so that it can be put in and taken out freely, and is normally placed on the bottom of the water during operation.

The filter case itself has, for example, a circular cross section, and a closed space is formed by covering the opening of the barrel 5A with a screw lid 5B. Garbage collection basket 4 shaped like a deep colander
After being fitted into the barrel 5A, the periphery of the opening is fixed by being pressed by the screw lid 5B. As can be seen from the figure, the cross section of the screw lid 5B is rapidly expanded toward the downstream side, and the shape is designed so that the secondary flow 15 based on the expansion of the flow path can be actively induced outside the main flow 14 toward the pump. Has become.

In the filter case 5, a negative pressure is created by the water absorption action of the submersible pump 6. Therefore, the foam 12A taken in from the skimmer 2 at atmospheric pressure can be easily repelled by the pressure difference between the inside and outside of the foam film when it reaches the filter case 5. The foam 12a formed by the broken foam and the collapse of the foam film is light, and deviates from the main stream 14 or flows backward along with the secondary flow 15 and accumulates in the upper space. If this is adhered to the upper wall surface, it can be captured separately from the other floating dust 12B that is caught on the mainstream by the dust collection basket 4.

By the way, the air 16 after the bubbles burst
Of the air trapped during the water intake by the skimmer 2, the air that could not be degassed by the introduction pipe 3 and stays in the upper space in the filter case 5 where the flow is not strong. If this accumulates too much, the filter case 5 will float, so an air vent hole 5a is provided to prevent this.

The air vent holes 5a may be scattered in various places on the upper part of the cylinder body 5A, but in the filter case 5, there is a tendency for them to accumulate in a relatively short time, so the air cylinders 5C for accumulating air. A proper number (one in the figure) is installed on the upper part of the barrel 5A. In this case, the air vent hole 5a may be opened in the upper lid 5D. By the way, since the air attached to the upper wall moves by being dragged by the flow to a greater or lesser extent, it is preferable to install the air cylinder 5C after the middle part of the filter case 5.

The water pipe 8 is the filter case 5
It is connected to the downstream side of the underwater in water, and is for directing the filtered water that has passed through the waste collection basket 4 to the pump storage box 7. The cross-sectional area of this pipe is much smaller than that of the filter case 5, and the debris 12a and the air 16 and the like that have deviated from the mainstream in the filter case 5 are contained in the pump housing box 7.
I try not to move as much as possible. In addition,
As shown in FIG. 2, if the water guide pipe 8 is connected at the lower portion of the filter case 5, the effect can be further enhanced.

Returning to FIG. 1, in this example, a valve 9 for adjusting the flow rate of the submersible pump is attached to this water guiding pipe 8. By adjusting the opening of this valve, the amount of the flow passing through the filter case 5 can be adjusted and the magnitude of the negative pressure to be generated can be changed. This valve may be installed anywhere from the submersible pump 6 to the filter case 5,
The location of the water guiding pipe 8 is most suitable from the viewpoints of wearability and adjusting effect.

A pump accommodating box 7 is connected to the downstream side of the water guiding pipe 8, and the submersible pump 6 is installed in the pump accommodating box 7 which is submerged by being left standing on the bottom of the water. The submersible pump does not directly suck the filtered water from the water guiding pipe 8, but sequentially sucks the purified water 17 once stored in the pump housing box 7 and feeds it to the purified water delivery pipe 18
The water is drained to the intake source via.

The pump accommodating box 7 has a large volume so that water can be stagnant and the submersible pump 6 can absorb water without interruption. The negative pressure in the pump housing box caused by this water absorption action induces a flow in the water guiding pipe 8 and the filter case 5, but in the end, a negative pressure is generated in the entire pipe line that is closed by the suction action of the pump. Let

The pump housing box 7 is a space where the flow is the slowest in the entire apparatus. Therefore, even if some of the slag and the entrained air come to the pump housing box along with the mainstream, the slag 12a and the air 16 can be floated and adhered or accumulated on the lower surface of the cover 7B. it can. By the way, as shown in the figure, the submersible pump 6
It is preferable that the suction port 6a of 1 is set as far as possible from the connecting portion of the water guiding pipe 8. An air vent hole 7a is also provided in the cover 7B that seals the main body 7A.

Next, the operation of the skimmer type removing device having the above-mentioned configuration will be described. When the skimmer 2 is floated and the surface water 10 is taken in, as shown in FIG. 1, the floating matter 12 floating on the water surface 11 due to the flow also enters and flows down the introduction pipe 3. At this time, some air may be entrained, but since the air does not reach the suction port 6a of the submersible pump 6 in the pump housing box 7, the pump operation is not hindered.

The intake water collected in the lower part of the introduction pipe 3 flows into the filter case 5 by the suction force of the pump. Immediately after the inlet of the filter case, the flow rapidly expands, so that backflow also occurs. This backflow is a secondary flow that is diverged from the mainstream or dragged by the mainstream, and light bubbles and entrained air are floated along with it. A negative pressure acts on the inside of the filter case 5, and the internal pressure of the foam taken in at atmospheric pressure becomes higher than the outside of the foam inside the filter case, and the foam spontaneously repels. When the foam is a carcass of microorganisms, etc., the foam film is a protein or a spoilage product thereof, so that most of it remains in the filter case 5 as a foam residue.

The floating dust 12B such as fallen leaves and lawn cuttings taken in together with the surface water 10 goes straight through the filter case 5 along with the main stream 14 and is collected by the dust collecting basket 4. At this time, since both the filter case 5 and the pump housing box 7 are under negative pressure, some water enters through the air vent holes 5a and 7a provided in each. However, the amount is small and not enough to change the flow path pressure.

If the amount of accumulated air in the filter case 5 increases while the operation is continued in this way, the pump is stopped at an appropriate timing. If the pressure returns before operation,
Not only in the filter case 5 but also in the pump housing box 7, fine air bubbles are accumulated from the air vent holes 5a, 7a, and the air 16 is discharged. When the pump is restarted, the collection of suspended matter is repeated. Floats are removed from the intake water and purified water is returned to the pond.

The operation is stopped in consideration of the amount of dust collected in the dust collection basket 4, and the suspended dust is removed by entering the water.
In some cases, raise the entire device. The dust collection basket 4 is taken out from the filter case 5 and replaced with a new one, and the foam residue 12a attached to the filter case 5 and the pump housing box 7 is scraped off. Floating refuse and slag are discarded or used for other purposes.

The organic substance which becomes bubbles and pollutes the water surface is
They are often small and do not stay in shape. In addition, since it is easy to ride the flow and is light, it is almost impossible to catch it together with the floating garbage that can be collected by a normal net basket or by the same principle. However, if the above-mentioned behavior or the phenomenon is utilized, it is possible to collect bubbles and debris by a principle different from that of collecting dust with a net basket or a filter cloth.

In the above-mentioned apparatus, not only the bubbles and debris can be captured, but also the floating debris can be collected at the same time. As a result, the purification of the water surface becomes quick and reliable, and it is also useful for water quality conservation. In addition, since the slag is separated from the floating dust and captured, it is easy to take out from the device and perform post-treatment.

Since most of this device is submerged, the landscape of the waterside in a garden or a pond of a golf course is maintained, and no land construction is required to install the device. In addition, the skimmer can be moved as long as the skimmer is placed at a desired position or the pump motor cord is lengthened.

There is no need for a device for gathering or scraping floating substances, and the installation and labor of auxiliary equipment are eliminated. Since the pump is not placed on land, the distance between the skimmer and the submersible pump can be shortened as much as possible. When the pressure loss of the pump is minimized, the size and the size of the device can be reduced and the cost of the device can be reduced. Power consumption can be reduced and operating costs can be reduced.

In the above description, it is explained that the slag is attached to the filter case 5 and the upper wall surface of the pump housing box 7. However, as shown in FIG. 2, in the filter case 5 in the space above the garbage collection basket 4, in the pump housing box 7 above the submersible pump 6, too, the fine mesh nets 21 and 2 are formed.
2 should be deployed.

The foam slag 12a tends to be entangled with the lines of the nets 21 and 22 and attached, and the trapping rate is higher than that when it is attached directly to the wall surface. Then, by simply replacing the net, the foam slags can be collected and taken out easily, and it is possible to avoid the troublesome work that the slags cannot be cleaned without disassembling the device.

The net may be made of metal or fiber, but the latter is suitable for incineration disposal. By the way, in the filter case 5, as shown in FIG. 3, a cylindrical frame 23 (not shown in FIG. 2) formed of, for example, a wire to cover the dust collecting basket 4 is prepared,
A replaceable net 21A may be attached to the upper surface thereof.

By the way, the purified water discharged from the submersible pump 6 is sufficient if it can be returned to the water intake source through the purified water delivery pipe 18. However, since the discharged water has a head, it can be used to perform fountain-type aeration or to cause a water flow.

In the former case, the fountain pipe 24 may be connected to the purified water delivery pipe 18A as shown in FIG. In the latter case, if a hose (pipe for jet flow) 25 is connected to the purified water delivery pipe and a float 26 is attached in the vicinity of the jet outlet and floated, the movement of the surface water 10 is stimulated and the suspended matter 12 on the skimmer 2 12 You can also encourage the approach of.

The device according to the present invention is characterized by being submerged in water such as being of a bottom-mounted type. Needless to say, this is to prevent direct contact with the public, but it does not mean that it must be left on the bottom of the water. Therefore, the floats 27 and 28 as shown in FIG. 4 are attached to large components such as the filter case 5 and the pump housing box 7,
The entire device can be kept away from the bottom of the water.

By pulling on the rope 29 shown in FIG. 1, the entire apparatus can be easily moved. if,
If a small propelling device such as a propeller can be installed on the left and right of the filter case 5 and the like, it can be moved by remote control in a wide pond.

In FIG. 5A, the water guiding pipe 8 connected to the pump housing box 7 is provided with a plurality of branch pipes 8a, 8a. In such a device, the flow from the skimmer 2 connected to the filter cases 5 connected to the respective branch pipes can be guided to one pump housing box 7. This is possible because the purified water 17 is stored in the pump housing box 7 and the collected water is sucked by the pump.

FIG. 5B has the same meaning as above, but a plurality of water pipes 8A, 8 are provided in the pump housing box 7.
This is an example in which A is connected. In any case, the floating object collection capacity can be doubled while the number of movable devices is kept to a minimum to simplify the operation and security management.
Therefore, if the device is placed leeward, the water surface can be cleaned in a few hours.

By the way, FIG. 5B shows an example in which the angle adjusting member 30 is interposed in the introduction pipe 3 below the skimmer 2. This is used for horizontal adjustment of the skimmer 2, and specifically, a universal joint may be adopted. By doing so, the posture of the skimmer can be easily adjusted to the water surface, and the function of the skimmer 2 can be normally maintained even if the installation posture of the introduction pipe 3 is not desired, which is convenient.

Although the removing device has been described with reference to some examples, all of them are placed horizontally. The same applies to (a) of FIG. 6, but is different in that the introduction pipe 3 is obliquely branched with respect to the filter case 5. In this case, if the screw lid 5B is removed, it becomes easy to pull out the dust collecting basket 4 in the filter case 5 as shown by the solid line.

Unlike this, the entire structure may be extended vertically. For example, a skimmer may be arranged directly above the filter case via an introduction pipe, but FIG. 6B shows an example in which the skimmer 2 is unevenly distributed from the filter case 5. In this case, there is no change in the mounting procedure of the dust collection basket 4, but the foam can be attached to the back surface of the screw lid 5B. Debris removal is straightforward if the screw lid is cleaned or replaced. Such an example is convenient when used for cleaning the water surface or the surface layer in a water tank or the like having a deep water but a narrow water surface.

In FIGS. 1 and 2, the floating dust 12B taken in by the skimmer 2 together with the foam 12A was collected by the dust collecting basket 4 installed in the filter case 5 in the space that rapidly expands. Fig. 7 is different from this, and foam 12A
The floating dust 12B taken in together with the above is collected by the dust collecting basket 4A attached to the discharge port 6b of the submersible pump 6 which is generating suction force.

In this example, the submersible pump 6 is directly connected to the water guiding pipe 8, and a collection basket equivalent product such as a cage or net is mounted on the discharge side. In this case, leaves and lawn cuttings pass through the submersible pump 6, but clogging will not easily occur if a pump for sewage and sludge is used. The slag 12a can be trapped in the filter case 5 not containing the dust collecting basket and can be captured as in the case of FIG.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an apparatus for removing suspended matter according to the present invention.

FIG. 2 is an overall configuration diagram of a removing device of a different example.

FIG. 3 is a diagram showing how to install a net for trapping foam in the filter case.

FIG. 4 is a simplified diagram of a floating type removing device.

FIG. 5 is an example in which one pump housing box is provided with a plurality of skimmers, (a) is an overall schematic view in which a plurality of branch pipes are provided in a water guiding pipe, and (b) is a plurality of water guiding pipes connected to each other. Schematic diagram of the whole case.

FIG. 6 shows another example of the device according to the present invention which adopts a different arrangement, (a) is a perspective view in which an introduction pipe is branched,
(B) is a perspective view of the filter case in a standing posture.

FIG. 7 is an overall configuration diagram of an example in which a garbage collection basket is provided on the downstream side of a submersible pump.

[Explanation of Codes] 1 ... Underwater installation type skimmer type removing device, 2 ... Skimmer,
3 ... Introduction pipe, 3a ... Elbow part, 4, 4A ... Garbage collection basket, 5 ... Filter case (space), 5a ... Air vent hole,
6 ... Submersible pump, 6b ... Discharge port, 7 ... Pump storage box, 7a ... Air vent hole, 8, 8A ... Water guide pipe, 8a ...
Branch pipe, 9 ... Valve for adjusting pump flow rate, 10 ... Surface water,
11 ... Water surface, 12 ... Floating matter, 12A ... Foam, 12B ... Floating refuse, 12a ... Foam slag, 14 ... Main stream, 15 ... Secondary flow,
17 ... Purified water, 18, 18A ... Purified water delivery pipe 21,
21A, 22 ... Net, 24 ... Fountain pipe, 25 ... Jet pipe (hose), 26, 27, 28 ... Float,
30 ... Angle adjusting member (universal joint).

Claims (14)

[Claims] 1. A water purification method using a skimmer in which suspended solids floating on a water surface and the like are taken in together with surface water and filtered, and purified water from which suspended solids are removed is returned to the original state. It is taken in by the skimmer at atmospheric pressure together with surface water, drawn into the space where the cross-sectional area expands rapidly while exerting the suction force of the pump on the taken water, and the secondary flow generated in the space causes the foam to deviate from the main flow toward the pump. At the same time, a method for removing suspended solids is characterized in that the negative pressure generated in the space causes the bubbles to pop, and the bubbles after the popping adhere to the upper wall of the space to trap them. 2. The floating material according to claim 1, wherein the floating waste taken in by the skimmer together with the foam is collected by the waste collecting basket installed in the space that rapidly expands. Removal method. 3. Floating dust taken in by a skimmer together with foam is collected by a dust collecting basket attached to a discharge port of a submersible pump generating a suction force. The method for removing suspended matter described in. 4. A water purification apparatus using a skimmer that takes in suspended matter floating on a water surface together with surface water and filters it to return purified water from which the suspended matter is removed to the water source. An introductory pipe that guides the suspended matter accompanying the underwater to the surface of the water; A submersible pump that is connected to the downstream side of the filter case in water and directs the filtered water that has passed through the filter case to an underwater pump; and a submersible pump that is connected to the water guiding pipe in water and that is filled with filtered water. A submersible pump storage box that can be sucked in and a purified water delivery pipe that discharges the water discharged from the submersible pump to the outside of the pump storage box. Water-premises suspended matter removing apparatus characterized by obtaining. 5. The underwater installation type floating substance removing apparatus according to claim 4, wherein the introduction pipe has an elbow portion so that the filter case can be installed substantially horizontally. 6. The underwater installation type suspended matter removing apparatus according to claim 4, wherein an angle adjusting member is interposed in the introduction pipe. 7. The valve according to claim 4, wherein a valve for adjusting a flow rate of the submersible pump is provided before reaching the pump housing box. Underwater installation type suspended matter removal device. 8. The submersible floating material according to claim 4, wherein the filter case or the pump housing box is provided with an air vent hole. Removal device. 9. The underwater installed floating material removal apparatus according to claim 4, wherein the filter case has a cross-sectional area larger than that of the introduction pipe. apparatus. 10. The filter case or the pump accommodating box is provided with a net for adhering the slag that has been splashed by the negative pressure generated during the operation of the submersible pump. 9. An underwater installation type suspended matter removing device described in any one of 9 above. 11. The jet pipe for jetting water or the jet pipe for generating a superficial flow is connected to the discharge port of the purified water delivery pipe, according to any one of claims 4 to 10. The underwater installation type suspended matter removal device described in. 12. A float is attached to the filter case, the pump housing box, etc., so that the entire apparatus can float in water.
The underwater-installed suspended matter removing device according to any one of claims 1 to 11. 13. A water guiding pipe connected to the pump housing box includes a plurality of branch pipes, and filtered water from a filter case connected to each branch pipe is guided to one pump housing box. 5. The method according to claim 4, wherein
The underwater-installed suspended matter removing apparatus according to any one of claims 1 to 12. 14. The pump receiving box is connected to a plurality of water guiding pipes, and the filtered water from each water guiding pipe is guided to one pump receiving box. 12. An underwater-installed suspended matter removing device described in any one of 12.