JP2012007524A - Floating matter collecting pump device and collecting ship - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reliably and efficiently take floating matter by enhancing a wide and stratified suction flow in the vicinity of a water surface for improving floating matter collecting technique, to provide a mobile cruising type while taking into account of emergency and in a case of oil-spill accident, and to solve the problem that reuse is required by direct collection.SOLUTION: The floating matter collecting pump device is set on a ship and integrated therewith so that it can be used as a cruising type floating matter collecting ship. The floating matter collecting pump device collects only the floating matter by using a specific gravity difference in a floating matter separation tank connected to a suction-ejection duct after widely taking the floating matter in the vicinity of a water surface. Spilled oil is reusable because of the direct collection using the specific gravity difference without using a treatment agent in a case of oil-spill collection.

Description

  The present invention relates to a device that takes in floating oil such as spilled oil, water scum, and dust floating on the water surface by a pump and collects the floating material in a separation tank.

Conventionally, when an oil spill accident occurs in the ocean, there is a method in which an oil fence is stretched and recovered with an oil adsorbent or dispersed and decomposed with an oil treatment agent or the like. As a spilled oil treatment device, a rotary impeller (water turbine) with its lower end submerged below the surface of the water is provided between the catamarans of the catamaran to promote the gelation of the oil substance by mixing and stirring with the gelling agent. Some devices (Patent Document 1) do, but the device is large, does not turn easily, and is difficult to reuse even if collected. In addition, there are a method (Patent Document 2) that collects suspended matter using a pump as a suction force and a method (Patent Document 3) that collects spilled oil with a vacuum pump, but the suction flow is unstable and uneven. Recovery efficiency is not good.

JP 59-156890 A JP 59-230887 A JP-A-4-266588

  In order to improve the technology for collecting suspended solids, the uniform and wide layered suction flow is strengthened near the surface of the water to ensure that the suspended matter is taken in. After the suspended matter is taken in, only the suspended matter is efficiently separated. Recover technology is required. In the case of a spilled oil accident, it is necessary to make a small turn in consideration of urgency and reuse it by direct recovery.

  In order to solve the problems of the prior art, the present invention is a relatively simple suspended matter collecting apparatus incorporating a pump that can directly take in suspended matter. An object of the present invention is to provide a suspended matter recovery apparatus that creates a wide and stratified suction flow in a wide range, efficiently takes in suspended matter through a pump, and can be recovered by a separation tank.

  The invention according to claim 1 provides an efficient floating substance recovery device that combines the characteristics of the internal flow of a once-through pump (cross flow pump) and combines the technique of collecting the floating substance by the pump and the technique of collecting the floating substance separation tank. To do. In other words, the pump body with the impeller shape cylindrical and the outer casing shape of the multi-blade once-through pump arranged for collecting suspended matter is installed so that the upper end of the impeller is submerged near the water surface. By creating a uniform, wide, laminar, stable suction flow characteristic of a once-through pump, a flow containing suspended solids is taken directly into the pump. The discharge flow is sent to the suspended matter separation tank while maintaining a laminar flow with little disturbance. This less turbulent flow characteristic facilitates the recovery of suspended matter in the tank by utilizing the specific gravity difference between water and suspended matter.

FIG. 1 shows a schematic view of the internal structure of a once-through pump 50 for sucking suspended matters. (A) is sectional drawing which arranged the outer casing shape of the once-through pump main body for floating matter suction, (b) is a YY arrow sectional view of (a). The main body of the once-through pump 50 is basically composed of a pump casing 30 containing a cylindrical multi-blade impeller 7 and a tongue portion 8 for controlling the flow. The impeller rotary shaft 2 drives the motor for driving. 12 is connected.

The flow passes through the blade 6 twice from the suction side 9 toward the discharge side 10 as shown in the pump sectional view of FIG. That is, the flow flows from the outside of the impeller 7 to the inside on the suction side 9 and flows out from the inside to the outside on the discharge side 10 to cross the impeller 7. The impeller 7 can be long in the width direction, and since the flow is two-dimensional and is discharged tangentially to the impeller, the discharge flow is wide sheet-like and less turbulent, unlike the prior art. Also, it can reach a long distance in a uniform flow without spreading. Therefore, unlike the conventional case, the suspended matter directly taken in by the pump is discharged without complicated turbidity of water and suspended matter, so it is easy to separate the suspended matter in the suspended matter separation tank installed on the discharge side. It is.

In addition, since the inlet and outlet on the suction side of each blade 6 are reversed on the discharge side, it is an excellent strength in collecting that the structure is less likely to cause clogging between the blades. For example, algae, small jellyfish and small garbage can be taken directly into the pump. By changing the number of blades, changing the blade pitch, or changing the inner / outer diameter ratio of the blades, it is possible to respond to the nature and size of the suspended matter.

The invention described in claim 2 constitutes a traveling-type floating substance recovery ship in which the floating substance recovery pump device according to claim 1 is set and integrated on the ship, and the floating substance separation tank of the traveling type The bottom opening is opened to the outside through the bottom of the ship or the outer wall on the stern side. Of the liquid containing floating matter taken in by the flow-through pump for sucking the floating matter, the liquid with high specific gravity is from the lower opening. It has a structure that naturally flows out and floats such as oil with a small specific gravity accumulate near the upper water surface in the tank container.

If the bottom opening of the floating substance separation tank is opened to the stern side, the discharge flow by the pump becomes the propulsive force, so that the propulsion by the screw can be made unnecessary.

  In the invention according to claim 3, the outer diameter dimension of the impeller 7 of the impeller 7 of the once-through pump 51 for floating substance suction in FIG. 2 protrudes slightly outside the impeller side plate 7b as shown by 6b, According to this, it is possible to reliably take in the suspended matter without depending on the type of the suspended matter. About 3 to 10% of the protrusion amount from the impeller side plate outer diameter of each blade outer diameter size is appropriate.

The invention according to claim 4 neutralizes the liquid by taking the toxic suspended liquid that has flowed out into the pump and ejecting the treatment liquid and fine bubbles from the air diffuser of the impeller hollow rotating shaft. The purpose is to detoxify or promote water purification and to clean the inside of the apparatus.

As shown in FIG. 2, the supply means for the refined bubbles and the processing liquid has a large number of diffused holes 5 formed on the outer peripheral surface of the hollow rotary shaft 3 in the impeller 7 or a porous material attached thereto. The air pump 11 and the liquid pump 11b connected to the hose 13 outside the impeller through 3 can be supplied in the form of fine particles from the air diffuser 5 into the flow in the impeller together with the treatment liquid alone or with air. .

The invention according to claim 5 is a state in which a guide vane inclined by about + 3 ° to + 10 ° with respect to the horizontal plane toward the suction port immediately before the impeller in the suction side channel of the once-through pump is submerged near the water surface. In this way, the flow in the vicinity of the water surface of the approaching flow to the pump is accelerated, and a micro wave without stagnation on the water surface is generated. As a result, an oil film-like curtain is not stretched on the water surface, and it becomes possible to easily take in floating substances.

The invention described in claim 6 provides a technique regarding the shape and structure of a floating substance separation tank for separating and collecting the floating substance taken in by a pump using a difference in specific gravity. Tanks are broadly divided into rectangular types and circular types. Cyclone type that gives a swirling flow to the flow in the tank, and rectangular type in the middle of the height direction in the rear of the tank so that the suspended matter can easily float. It has a structure in which a floating material separation guide for separating the floating material by controlling the flow is installed.

The invention according to claim 7 is a fixed type floating substance collection pump device, and provides a technique regarding the shape and installation method of the floating substance collection tank for collecting solid substances such as algae and floating dust. The suspended matter recovery tank may be connected to the suction side or the discharge side of the once-through pump. Floating substances are collected by installing a floating substance collection screen in the suction-side flow path and discharge-side flow path open to the outside sea or river.

  According to the present invention, spilled oil and various floating substances can be easily collected in the floating substance separation tank after being directly taken into the pump, so that the recovery efficiency is better than conventional techniques, and the recovered oil can be reused. Become. Moreover, it becomes possible to cope with harmful floating matters by ejecting the treatment liquid and the fine bubbles from the air diffusion holes 5 of the impeller hollow rotary shaft 3.

FIG. 1 shows a basic structure of a main body of a cross-flow pump (cross-flow pump) for taking in floating matter of the present invention. (A) is sectional drawing of a once-through pump, (b) is a YY arrow sectional drawing of (a). FIG. 2 shows the structure of a once-through pump for sucking a floating substance by adding a new technology inside the impeller and inlet casing of FIG. (A) is sectional drawing of a once-through pump, (b) is a YY arrow sectional drawing of (a). FIG. 3 shows the structure of a floating substance recovery ship integrated with a floating substance recovery pump device set on the ship. (A) is a top view, (b) is a side sectional view. Example 1 FIG. 4 shows the structure of a floating substance recovery ship when the structure of the floating substance separation tank is different from that of the first embodiment of FIG. (A) is a top view, (b) is a side sectional view. (Example 2) FIG. 5 shows the structure of a suspended matter recovery ship in the case where the shape of the opening on the rear wall side of the suspended matter separation tank is different from that of the second embodiment of FIG. (A) is a top view, (b) is a side sectional view. (Example 3) FIG. 6 is a plan view showing the structure of a suspended matter recovery ship in which the impeller of the second embodiment of FIG. Example 4 FIG. 7 shows the structure when the floating substance separation tank in the first embodiment of FIG. (A) is a top view, (b) is a side sectional view. (Example 5) FIG. 8 shows a suspended matter recovery ship when the once-through pump is a vertical type and the discharge duct of the pump is connected tangentially to the inlet of the circular suspended matter separation tank. (A) is a top view, (b) is a side sectional view. (Example 6) FIG. 9 shows the structure of a floating substance recovery ship when a rectangular floating substance separation tank different from the second embodiment of FIG. 4 is connected. (A) is a top view, (b) is a side sectional view. (Example 7) FIG. 10 shows an apparatus for collecting solid floating matters such as floating dust unlike the floating matter separation tank of the seventh embodiment of FIG. (A) is a top view, (b) is a side sectional view. (Example 8) FIG. 11 shows an installed state of the floating substance recovery pump device when a floating substance recovery tank is connected to the suction side of the longitudinal once-through pump. (A) is a top view, (b) is a side sectional view. Example 9 FIG. 12 shows a structure when a once-through pump for floating substance suction is attached to a ridge. (A) is a plane sectional view, (b) is a side sectional view. (Example 10)

Embodiments of the present invention will be described below with reference to FIGS.

FIG. 3 is a first embodiment of the present invention, and shows the form of the suspended matter recovery ship 40 when the entire floating matter recovery pump device according to claim 1 is set on a ship and integrated. Used for recovery. (A) is a top view, (b) is a side sectional view. The basic structure of the present invention is centered on the once-through pump, and on the suction side, an open / close type inflow guide 61 is installed at the intake port of the bow, and a floating material introduction guide vane 65 is installed in the intake channel 64 immediately before the pump, A floating substance separation tank 81 connected to the discharge duct 55 is installed on the discharge side. An opening 70 at the bottom of the tank opens to the outside through the ship bottom. The opening of the water intake 62 to the pump of the floating substance takes a wide flow on the water surface side where there is the floating substance, so that the depth direction is made into a horizontally long rectangle, and the pump suction side casing 15 moves toward the pump suction port. Connected gently.

In the recovery of suspended matter such as spilled oil according to this embodiment, first, the openable inflow guide 61 that also serves as the head of the ship 60 is opened, and the suspended matter such as spilled oil drifting near the surface of the water is led to the water inlet 62, A floating material introduction guide vane 65 installed on the path 64 immediately upstream of the impeller 7 of the once-through pump accelerates the flow near the water surface 14 and locally activates only the vicinity of the water surface. Generate a wave. By this method, floating substances such as oil can be easily taken into the pump without causing a curtain on the water surface.

Since the discharge flow of floating matter such as spilled oil taken together with water by the flow-through pump 51 for floating matter suction is less turbulent as described above, the water and the floating matter are not turbid and pass through the discharge duct 55 and become rectangular. It is carried into the mold floating matter separation tank 81. This floating substance separation tank 81 has a rectangular shape and is provided with a horizontal introduction guide 68 at the inlet, a floating substance separation guide 69 on the rear wall side, and a ship bottom opening 70 at the bottom.

In the floating substance separation tank 81, the inflow from the discharge duct 55 of the pump is directed in the horizontal direction by the horizontal introduction guide 68 at the inlet, so that the floating substance having a small specific gravity can easily float. On the tank rear wall side, a floating material separation guide 69 for controlling the flow to return only the floating material contained in the downward flow to the water surface side is installed, and only the floating material is directed upward using the specific gravity difference. . Excess water naturally flows out to the outside from the ship bottom opening 70, and the balance of the water level in the suspended matter separation tank 81 is maintained.

The floating substance such as oil collected on the water surface side of the floating substance separation tank 81 is collected in the floating substance collection container 73 through the floating substance collection introduction pipe 71. Since the floating substances are likely to gather on the inlet side of the floating substance separation tank 81, the position of the recovery container should be placed on the front side of the floating substance separation tank 81 if there is room. Or you may collect | recover to a collection container directly from the water surface side using the siphon effect | action by a flexible hose. According to the present invention, since the spilled oil can be directly recovered, there is an advantage that it can be reused.

The technique described in claim 4 can be used as means for promoting water purification and floating floating. The gas supplied to the hollow rotary shaft 3 by the air pump 11 is ejected as fine bubbles into the center of the impeller through the air diffusion holes 5 shown in FIG. 2, and the impeller 7 in a state where the fine bubbles are uniformly mixed. Supplied along with the pump discharge flow from the inside through the outside. The flow accompanied by the bubbles purifies the water quality and promotes the floating of the suspended matter at the discharge part, facilitating the recovery.

In the case of processing a toxic liquid or the like that cannot be recovered from the suspended matter that has flowed out, a processing liquid for making the harmful liquid harmless by the liquid pump 11b is passed through the hose 13 to the hollow rotary shaft 3 of the impeller of the once-through pump. It can be rendered harmless by supplying and spraying the atomized treatment liquid from the diffuser hole 5 with rotation into the impeller and uniformly mixing it into the taken-in harmful liquid or the like.

Maintenance and cleaning of the pump is performed by closing the suction side sluice 58 and the discharge side sluice 59. The apparatus is cleaned by supplying the cleaning liquid to the impeller hollow shaft diffuser 5 by the liquid pump 11b while the pump is idling.

FIG. 4 shows the form of a floating substance recovery ship 41 such as spilled oil according to the second embodiment of the present invention. (A) is a top view, (b) is a sectional side view. The structure of this apparatus is different from the first embodiment of FIG. 3 in that the opening at the bottom of the floating substance separation tank 82 is not on the ship bottom side, but from the floating wall separation tank rear wall side opening 74 to the outside through the stern opening 80. (Sea, river).

According to this embodiment, excess water separated due to the difference in specific gravity flows out from the stern opening 80 through the suspended matter separation guide 69 at the floating matter separation guide 69. The position of the opening to the outside of the ship may be on the bottom side or the stern side. However, if the opening is provided on the stern side, there is an advantage that the propulsive force of the ship can be obtained by the discharge speed.

The bar screen 63 at the bow entrance can be used to recover large solid suspended solids that cannot be taken directly into the once-through pump, and when it is better to collect upstream of the pump depending on the type of suspended solids. It is a thing.

FIG. 5 shows the form of the suspended matter recovery ship 42 of the third embodiment of the present invention. (A) is a top view, (b) is a side sectional view. Unlike the second embodiment of FIG. 4, the structure of this apparatus is provided with an electric discharge control valve 90 in the middle of a discharge pipe 91 connected from the floating wall separation tank rear wall side opening 74 to the stern opening 80. The amount of discharge from the tank and the discharge speed are changed by adjusting the valve opening, and the speed and direction of the ship can be changed by changing the left and right valve openings. This method does not require propulsion with a screw, and moves at a slow speed, so it is suitable for collecting suspended matter.

FIG. 6 is a plan view showing the form of the suspended matter recovery ship 43 of the fourth embodiment of the present invention. Since the flow of the once-through pump 52 is two-dimensional, in order to increase the suction inlet width, the axial length of the impeller 7 is simply increased. Alternatively, several impellers 7 may be connected in the width direction as shown in the figure. This embodiment is a case where three impellers 7 are connected, and the other configuration is the same as that of the second embodiment shown in FIG.

FIG. 7 is a plan view (a) and a side sectional view (b) showing the form of the suspended matter recovery ship 44 of the fifth embodiment of the present invention. In the present technology, the shape of the suspended matter separation tank 84 is not rectangular but cylindrical. The flow flowing into the cylindrical floating substance separation tank 84 from the discharge duct 55 is divided into left and right by the center separation wall 86, and the floating substance is collected on the water surface side due to the difference in specific gravity while generating a circulating flow along the cylinder. . The center separation wall 86 is bulged downward in order to promote the floating of floating substances such as oil. Excess water naturally flows out from the bottom opening, and the water level is balanced. The suspended matter collection container 73 b is divided into an oil chamber 78 and a water chamber 79 by a partition plate 77.

The floating material collection container 76 is divided into the oil chamber 78 and the water chamber 79 by the partition plate 77 for the following reason. The floating collection efficiency of this device is easily affected by the draft of the ship, which is related to the submergence depth of the once-through pump impeller 7, so that the amount of water in the water chamber is adjusted according to the amount of floating collected. This is to keep the draft in the optimum position.

As a method of making the once-through pump impeller 7 have an appropriate submerged depth, there is a method in which a part of the pump suction side casing 15 and the discharge duct 55 are made flexible hoses so that the pump body can be moved up and down. There is also a method of adjusting the front and rear flanges 25, 26 integral with the pump so that they can slide up and down.

FIG. 8 shows a form of a suspended matter collection ship 45 according to the sixth embodiment of the present invention. (A) is a top view, (b) is a side sectional view. Unlike the first to fifth embodiments, the present embodiment is characterized in that the flow-through pump 53 for floating matter suction is installed vertically. The pump casing shape 31 is arranged in consideration of the positional relationship between the pump and the separation tank. According to this embodiment, the cylindrical floating substance separation tank 85 has a structure in which the flow from the discharge duct 56 flows tangentially into the separation tank, and the flow is separated while swirling in the circular tank. It takes longer time to make it easier to separate suspended matter and water. Excess water naturally flows out from the ship bottom opening 70b, and the water level in the tank is maintained.

In the vertical installation, it cannot be taken long in the width direction as in the horizontal installation, but since the driving motor 12b can be installed on the water surface, installation and maintenance are easy. Vertical installation is effective for small-scale suspended matter collection. In addition, since only an inflow near the water surface can be obtained, suspended matters can be reliably taken in.

FIG. 9 shows the form of a suspended matter recovery ship 46 according to the seventh embodiment of the present invention. (A) is a plane sectional view, (b) is a side sectional view. In the present invention, as in the sixth embodiment, the flow-through suction flow-through pump 54 is installed vertically, but the float separation tank 83 is rectangular, and the stern side of the tank is fully open. And the river. The pump casing shape 32 is arranged so that the center positions of the pump and the separation tank substantially coincide.

According to this embodiment, the flow containing the suspended matter taken into the suspended matter separation tank 83 collects suspended matter such as oil having a small specific gravity by blocking the flow near the water surface by the suspended matter separation plate 92. The water having a large specific gravity passes under the suspended matter separating plate 92 and flows backward. The other configuration is basically the same as that of the sixth embodiment shown in FIG.

FIG. 10 shows the form of a suspended matter collection ship 47 according to the eighth embodiment of the present invention. (A) is a plane sectional view, (b) is a side sectional view. The present invention is mainly intended for small floating substances such as aquatic or floating dust, and is a simpler apparatus than an oil recovery apparatus. It is also suitable for the use of suspended matter collection in dam lakes.

In this embodiment, as in the seventh example of FIG. 9, the stern side of the suspended matter collection tank 87 is fully open and communicates with the open sea and rivers. The flow containing the suspended matter taken into the suspended matter collection tank 87 is collected only in the suspended matter collection screen 94 by the suspended matter collection screen 94.

FIG. 11 is a ninth embodiment of the present invention, and shows a state in which a vertically placed flow-through pump 54 for suctioning floating matter is installed in the pond 20. (A) is a plan sectional view, and (b) is a side sectional view of the pump vertical floating substance recovery device 47. In this embodiment, since it is a fixed installation type, a floating substance recovery tank 88 is connected to the suction side of the pump. Moreover, if a micro bubble is ejected from the diffuser hole 5 of an impeller hollow rotating shaft shown in FIG. 2, it will also purify water quality.

According to this embodiment, the flow of the once-through pump is less turbulent, and the circulation of the flow near the water surface of the entire pond can be activated by the characteristic that the discharge flow reaches far away, so that the water quality is purified and aquatic etc. Is less likely to occur. Floating matters such as algae such as blue seaweed and garbage can be collected by a floating matter collection screen 94 installed on the suction side of the pump. If the pond is large, it is better to increase the number of pumps. It can also be used for ponds located in golf courses.

FIG. 12 shows a tenth embodiment of the present invention, in which a trough 95 is provided with a once-through pump 54 for sucking a floating substance so as to be movable. In this case, after taking algae such as sea cucumbers and floating dust directly into the once-through pump, the floating hose connected to the pump discharge port 89 is used to collect the suspended matter in a separation tank or release it as it is. Indicates when to do.

According to this embodiment, since the once-through pump is installed in the reed, the suction port of the pump becomes constant regardless of the water level, so in places where the water level fluctuates greatly, such as a dam lake or the front pond of the pump station. Suitable for use. In addition, the pump is difficult to clog as described above, and the interval between the blades can be easily changed by changing the blade pitch of the impeller 7, so that it can cope with various and different floating matters. It is a feature. For example, measures against small jellyfish at the intake of a power plant can be considered.

Since the flow-through pump used for the suspended matter recovery pump device of the present invention is structurally resistant to clogging, the suspended matter can be directly taken into the pump and recovered. Suitable for collecting various suspended matters. In particular, a traveling float collection ship in which the present apparatus is integrated on a ship has an excellent merit in that the spilled oil can be directly recovered and reused.

2 Impeller rotating shaft
3 Impeller hollow rotating shaft with air diffuser holes 5 Air diffuser holes 6 Blades of once-through pump
6b A portion where the tip of the blade protrudes outside the outer diameter of the side plate of the impeller 7 Impeller 7b Side plate 8 of the once-through pump impeller 8 Casing tongue
9 Pump suction side 10 Pump discharge side
11 Air pump 11b Liquid pump 12 Motor for driving
12b Motor for vertical drive 13 hose
14 Water surface 14b Liquid surface 15 Pump suction side casing
20 Pond 25, 26 Flange
30, 31, 32, 33,
Pump casing 40, 41, 42, 43, 44, float collection vessel 45, 46, 47 Pump vertical type float collection vessel 48 Float collection tank 50, 51, 52 Cross flow pump 53, 54 Vertical flow through pump 55, 56, 57 Discharge duct 58 Suction side sluice 59 Discharge side sluice 60 Ship
61, 61b, 61C Open / close type inflow guide 62 Water intake
63 Bar screen
64 Intake channel
65 Floating material introduction guide van 68 Horizontal introduction guide
69 Floating material separation guides 70, 70b
71 Floating material collection introduction pipe 72 Valve
73, 73b Floating substance collection container 74 Floating substance separation tank rear wall side open port 77 Partition plate
78 Oil recovery room
79 Water chamber 80 Stern opening
81, 82, 83 Rectangular floating substance separation tank
84, 85 Cylindrical float separation tank
86 Center separation walls 87, 88 Floating substance recovery tank 89 Pump discharge port
90 Electric discharge control valve 91 Discharge pipe 92 Floating material separator
94 Floating material collection screen 95 筏
96 Flexible hose 97 Pump mount
B fine bubbles

Claims (7)

Install a pump with an impeller shape that is cylindrical and the outer casing of a multi-blade once-through pump (cross flow pump) arranged to collect suspended matter so that the upper end of the impeller is submerged near the water surface. After sucking floating oil or floating dust with a pump and taking it in, it is led to a separation tank for collecting floating matter connected to the discharge duct (there is an opening to the outside at the bottom), and the floating matter has a specific gravity difference from water Floating substance collection pump device characterized by separating using float and collecting only floating substances The suspended matter collecting pump device according to claim 1 is set integrally with a ship or a dredger, and the opening at the bottom of the floating matter collecting separation tank is opened to the outside through the bottom of the ship or the outer wall of the stern. Of the liquid containing suspended matter taken in by the once-through pump, excess liquid with a large specific gravity is allowed to flow out of the ship through the opening in the lower part of the tank. A floating floating recovery vessel (回収) that accumulates near the upper water surface in the separation tank and collects it in a floating recovery container. A pump for collecting floating matter, characterized in that each blade outer diameter of the once-through pump according to claim 1 has a structure projecting slightly outside the outer diameter of the impeller side plate, and the floating matter is easily scraped into the suction port. apparatus The impeller rotary shaft of the once-through pump according to claim 1 is a hollow rotary shaft having a large number of air diffusion holes, and processing liquid and cleaning liquid are supplied into the impeller from the outside of the impeller through the hollow rotary shaft, or air is also supplied simultaneously. Floating matter recovery, characterized by being able to purify water quality, clean the inside of the device, and promote the floating of floating matter by fine bubbles by atomizing them from the air holes and ejecting them into the flow Pump equipment A guide vane inclined by about + 3 ° to + 10 ° with respect to the horizontal plane toward the suction port immediately before the impeller in the suction side flow path of the once-through pump according to claim 1 or 2 in a state where the guide vane is immersed near the water surface. Floating matter collection pump device characterized by accelerating the flow in the vicinity of the water surface toward the suction port and facilitating uptake of suspended matter by installing The shape of the floating substance separation tank connected to the pump discharge casing according to claim 1 is roughly divided into a rectangular type and a circular type so that the floating substance can easily float by using a specific gravity difference. In the circular type, a cyclone type that gives a swirling flow in the tank, and in the rectangular type, a structure that installs a floating material separation guide to separate the floating material by controlling the flow at the middle position in the height direction on the tank rear wall side. Floating matter collection pump device characterized by A float collection tank is connected to the suction side or the discharge side of the once-through pump according to claim 1,
Floating matter collection, characterized by installing a screen to collect floating matter such as algae and garbage in the suction-side flow path and discharge-side flow path open to the sea and river outside the collection tank Pump equipment

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