JP5645141B2 - Water intake equipment - Google Patents

Description

  The present invention relates to a water intake device that can be installed without requiring civil engineering work, and has no problem of dust and sediment, and can also take water at a low water level.

  When water is taken from a water source such as a river, lake, or pond by a pump, it is necessary to perform civil engineering work on the bottom of the water. As a civil engineering work, as described in Patent Document 1, a box frame is formed by excavating the bottom of the water, a water intake pipe made of a perforated pipe is inserted into the box frame, and a filling material is packed around the water intake pipe. It is constructed by spreading net bags and constructing a filtration wall. The reason for installing the intake pipe at the bottom of the water is to ensure that the intake is stable even when the water level fluctuates up and down. However, construction on the bottom of the water requires civil engineering work, so it is a large-scale construction, and also requires a long period of time and a high construction cost.

  On the other hand, Patent Document 2 describes a water intake device that takes a water intake pipe in a floating state with the water intake pipe floating in water. This intake device is arranged on the surface of a lake or the like as a structure in which a float such as a buoy is attached around the intake pipe, and a strainer (filter) made of a mesh body is attached below the intake port of the intake pipe. is there. The intake pipe is connected to a land-based pump by a hose, and water is drawn into the intake pipe by driving the pump.

  When this water intake device is placed on the water surface, the water intake pipe floats in a vertical state from the water surface due to the buoyancy of the float, and water is taken in the vertical state. Such a structure can be easily installed without requiring large-scale civil engineering work.

JP 2004-124380 A Japanese Patent Laid-Open No. 10-15313

  However, in the water intake device described in Patent Document 2, since the strainer is positioned below the intake port of the intake pipe and the float is positioned above the intake port, the vertical direction (water depth direction) is long. For this reason, there is not only a problem that it is easy to suck in dust and sediment on the bottom of the water, but also a problem that it is difficult to take up water at a shallow depth because the standing state cannot be maintained at a shallow depth. In addition, cleaning maintenance for removing the sucked dust and sediment is frequently required.

  The present invention has been made in consideration of such conventional problems, and by making the structure floating in water and taking water, large-scale civil engineering work is unnecessary, and simple installation can be achieved. Moreover, an object of the present invention is to provide a water intake device that can suppress inhalation of dust and sediment during water intake, can take water at a shallow depth, and does not require frequent maintenance.

The water intake device of the present invention has a horizontally long intake pipe with one end in the length direction serving as a suction port and the other end as a water intake, and is connected to the intake port of this intake pipe via a connection hose. A pump that draws in water, a horizontally-long hollow holding tube into which the intake pipe is inserted along the longitudinal direction so that the intake port is located inside and the intake port is located outside, and the suction port is A float for imparting buoyancy in water to the holding tube so that the holding tube has a plurality of water-absorbing holes formed in a lower portion than the vertically divided position along the length direction. The holding tube is made of a cylindrical body that is open at both ends in the longitudinal direction, and is closed by covering the opening on one end side with a cap, and on the other end side. The opening is covered with the socket in the intake pipe insertion state. By being closed, water is sucked in only from the water suction holes in the lower part from the upper and lower divided positions, and the intake pipe is inserted into the holding pipe so as to be movable in the longitudinal direction within the holding pipe, In the inserted state, only the suction port is open in the holding tube, and a filter nozzle is attached to the suction port to prevent it from being removed from the socket, thereby preventing the retaining tube from coming off. To do.

  In this case, it is preferable that the intake pipe is inserted into the holding pipe in a state where the central axis in the longitudinal direction of the intake pipe and the central axis in the longitudinal direction of the holding pipe coincide with each other.

  The holding pipe is preferably anchored to the land side by a connecting rope.

  According to the water intake device of the present invention, since the intake pipe has a double pipe structure inserted into the holding pipe, the suction force of the pump that acts on the intake pipe is reduced by the holding pipe outside the intake pipe. For this reason, since the suction | inhalation of the sediment which exists in the bottom of a water can be suppressed, high quality water can be taken in. In addition, in the holding pipe, water absorption holes are formed in the lower part of the upper and lower two divided positions, but the other parts except the lower part are closed, so that the sediment that settles from the water surface Can suppress inhalation of water and can take in high-quality water. Furthermore, since the holding pipe floats in the water in a sideways state, water can be taken even if the water depth is low, and even a shallow water source can be taken efficiently and reliably. Furthermore, since no civil engineering work is required on the bottom of the installation, installation in a short period of time and inexpensive installation are possible.

It is a top view which shows the water intake apparatus of one Embodiment of this invention. It is a side view which shows the water intake apparatus of one Embodiment of this invention. It is sectional drawing which shows a holding pipe and a water intake pipe.

  Hereinafter, a water intake device 1 according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a plan view showing the whole water intake device 1, FIG. 2 is a side view showing the whole, and FIG. 3 is a sectional view showing an assembled state of the holding pipe and the water intake pipe.

  As shown in FIGS. 1 to 3, the water intake device 1 of this embodiment includes a water intake pipe 2, a pumping pump 3, a holding pipe 4 as a primary filter, and a float 5. In this state, it is placed in the water of the river 7. In the following embodiments, the water source will be described as the river 7, but any other water source can be applied as long as it is a lake, pond, tank, or other water source.

  As shown in FIG. 3, the water intake pipe 2 is formed by a horizontally long hollow tube body, one end (left end in FIG. 3) in the longitudinal direction is the suction inlet 21, and the other end (right end in FIG. 3) is the water intake 22. It has become. The intake pipe 2 is formed of a cylindrical metal pipe or plastic pipe having a diameter of about 30 to 100 mm. In the case of a metal tube, it is preferable to use a corrosion-resistant metal such as SUS, or the outer surface is subjected to corrosion-resistant plating. The suction port 21 in the intake pipe 2 is provided with a filter (not shown) made of a mesh body, a punching metal, or the like as a secondary filter, so that foreign matter or the like is prevented from being sucked from the suction port 21.

  The filter is stretched inside a filter nozzle 23 having a diameter larger than that of the water intake pipe 2, and the filter nozzle 23 is attached to the suction pipe 21 portion of the water pipe 2 by screwing, fitting, or the like. Is provided at the inlet 21. By attaching the large-diameter filter nozzle 23 to the water pipe 2 in this way, the water intake pipe 2 is not detached from the socket 11 (described later), and the water intake pipe 2 is prevented from coming out of the holding pipe 4.

  As shown in FIG. 2, the pump 3 is installed on the land 6, and the intake pipe 2 and the pump 3 are connected via a connecting hose 8. As the connection hose 8, a bellows tube, a rubber hose, a flexible pipe, or other hose having flexibility or flexibility is used. Since the connecting hose 8 has flexibility or flexibility, even if a holding pipe 4 to be described later arranged on the river 7 side moves up and down the water surface, or moves according to the flow of water or the direction of the wind, it keeps following the movement. It is possible to continue water intake. The connecting hose 8 is connected to the intake port 22 of the intake pipe 2 to connect the intake pipe 2 and the pumping pump 3, and the pumping pump 3 is driven to drive the inside of the intake pipe 2 through the connecting hose 8. Can draw water into.

  The holding tube 4 is formed of a horizontally long hollow cylinder made of a material such as a corrosion-resistant metal, a metal subjected to corrosion-resistant plating, or plastic. The holding pipe 4 is formed of a cylindrical body having a diameter larger than that of the water intake pipe 2, and the water intake pipe 2 is inserted therein. In this embodiment, the holding tube 4 has an opening 41 on one end side (left end side in FIGS. 2 and 3) and an opening 42 on the other end side (right end side in FIGS. 2 and 3). Thus, the cylindrical body is opened at both ends in the longitudinal direction. In this embodiment, a cylindrical tube is used as the holding tube 4. The intake pipe 2 is inserted into the holding pipe 4 from the opening 42 on the other end side of the holding pipe 4.

  As shown in FIG. 3, the intake pipe 2 is inserted into the holding pipe 4 so that the suction port 21 is located inside the holding pipe 4 and the intake port 22 is located outside the holding pipe 4. At this time, the water intake pipe 2 is inserted into the holding pipe 4 so that the suction port 21 is located at an intermediate portion (preferably half the length) of the holding pipe 4 in the length direction. Thus, the water intake apparatus 1 of this embodiment takes water with a double pipe structure by inserting the water intake pipe 2 into the holding pipe 4. That is, water is first sucked into the holding pipe 4 and then drawn into the intake pipe 2 from the holding pipe 4 and taken in.

  With such a double pipe structure, the suction force of the pump 3 acting on the intake pipe 2 is alleviated by the holding pipe 4. For this reason, the suction | inhalation force of the water of the holding pipe 4 does not become excessive, and it can suppress inhalation | suction of sediment, such as dust of a water bottom and sediment.

  In the holding tube 4, a plurality of small-diameter water-absorbing holes 44 having a diameter of several millimeters are formed by punching or the like in the lower portion 43 with respect to the upper and lower divided positions (divided position 9 in FIG. 3) along the length direction. . The water absorption hole 44 is for introducing the water of the river 7 into the holding pipe 4. On the other hand, the upper portion 45 of the holding pipe 4 above the upper and lower divided position 9 is closed without forming the water absorption hole 44.

  As a result, the lower portion 43 in which the water absorption holes 44 are formed is covered with the upper portion 45, and dust, sand, insects, and other sediments that have settled from the water surface are transferred from the upper portion 45 to the holding tube 4. Not only can it be prevented from being sucked into the inside, but also water can be sucked from the water absorption hole 44 of the lower portion 43.

  In this embodiment, the upper / lower two-divided position 9 is a half position obtained by dividing the holding tube 4 in a horizontal plane, the lower portion 43 is the lower half circumferential portion, and the upper portion 45 is the upper half circumferential portion. It has become. Not only this but the lower part 43 is good also as a part smaller than a lower half, and since the area of the upper part 45 becomes large by this, there exists a merit which the suction suction power of a sediment becomes large.

  As shown in FIGS. 2 and 3, a cap 10 formed in a disk shape with metal or plastic is detachably fitted into the opening 41 on one end side of the holding tube 4. By fitting the cap 10, the cap 10 is put on the opening 41 on one end side, and the opening 41 is closed.

  A socket 11 made of metal or plastic is detachably placed on the opening 42 on the other end side of the holding tube 4. The water intake pipe 2 is inserted through the socket 11, and the socket 11 is fitted onto the opening 42 when the water intake pipe 2 is inserted, and is covered with the opening 42. As a result, the opening 42 on the other end side of the holding tube 4 is closed. Since the holding tube 4 has such a structure, water is sucked into the holding tube 4 only from the lower portion 43 of the upper and lower two-divided positions 9 where the water absorption holes 44 are formed, and the lower portion 43 is excluded. No water is sucked in from the part. Thereby, it is possible to reliably prevent sediment from the water surface from entering the holding tube 4.

  Further, in the structure assembled by fitting the cap 10 into the holding tube 4 and fitting the socket 11 through which the water intake tube 2 is inserted, the assembly and disassembly are facilitated. For this reason, there is an advantage that maintenance work can be easily performed.

  The socket 11 has a sliding cylinder 12 for holding the intake pipe 2 inserted from the periphery while the intake pipe 2 is inserted therethrough. The intake pipe 2 is slidable in the axial direction while being held by the sliding cylinder 12. By this movement, the suction port 21 of the intake pipe 2 can be repositioned in the longitudinal direction inside the holding pipe 4. Therefore, it is possible to follow movement due to the flow of water. In this case, a filter nozzle 23 having a diameter larger than that of the sliding cylinder 12 is attached to the suction port 21 portion of the intake pipe 2 to prevent the intake pipe 2 from coming out of the holding pipe 4.

  The intake pipe 2 is held by the sliding cylinder 12 so that the longitudinal center axis of the intake pipe 2 coincides with the longitudinal center axis of the holding pipe 4 (see FIGS. 2 and 3). . Since the central axis in the longitudinal direction of the inner intake pipe 2 and the central axis in the length direction of the outer retention pipe 4 are thus aligned, the intake pipe 2 and the retention pipe 4 are separated from each other. Even if dust or sediment on the bottom of the water is sucked into the holding pipe 4, it does not reach the intake pipe 2, and good quality water is introduced into the intake pipe 2. Moreover, since water can be taken near the bottom of the water, water can be taken at a relatively shallow depth.

  The float 5 imparts buoyancy to the holding tube 4 and is connected to the holding tube 4 via a plurality of suspension members 13 such as chains. As the float 5, a foam having an independent foam structure, a hollow floating body such as a spherical shape, a donut shape, a cylindrical shape, or the like can be used. The float 5 gives buoyancy in water to the holding pipe 4 so that the suction port 21 of the intake pipe 2 is located in the water, and the holding pipe 4 always has a constant depth even if the water level fluctuates. It is possible to float at.

  Due to the buoyancy of the float 5, the holding tube 4 floats from the bottom of the river 7 and floats in the water in a sideways state while sinking at a certain depth from the water surface. Since the holding pipe 4 floats in a sideways state, water can be taken at a shallow water depth, and therefore can be applied to a river 7 having a shallow water depth.

  In addition to the above structure, a connecting rope 14 is connected to the holding tube 4. As shown in FIG. 1, the connecting rope 14 extends to the land 6 side while being connected to the holding pipe 4, and is bound to an anchor pile 15 provided on the land 6. As a result, the holding pipe 4 is anchored to the land 6 side via the connecting rope 14, so that it is easy to prevent drifting and to collect in maintenance.

  As shown in FIG. 2, the water intake device 1 having the above structure floats in the water in the horizontal state so that the suction port 21 of the water intake tube 2 is located in the water, and drives the pump 3 in this state. . Since the pulling force acts on the water intake pipe 2 by this driving, the water of the river 7 is sucked from the suction hole 44 formed in the lower portion 43 of the holding pipe 4 and is drawn into the water intake pipe 2 for water intake. .

  According to the water intake device 1 of such an embodiment, since the intake pipe 2 connected to the lift pump 3 has a double pipe structure inserted into the holding pipe 4, the lift pump acting on the intake pipe 2. 3 is relaxed by the holding pipe 4 outside the intake pipe 2. For this reason, the suction force does not become excessive in the holding tube 4, and suction of sediment such as dust and sediment on the bottom of the water can be suppressed even at a shallow depth, and high-quality water can be taken. This also facilitates water intake at shallow depths.

  Further, in the holding tube 4, a plurality of water absorption holes 44 are formed in the lower portion 43 with respect to the vertically divided position along the length direction, while the other portions except the lower portion 43 are closed. Therefore, it is possible to prevent the dust, sand, and other sediments that sink from the water surface from being sucked into the holding tube 4. This also allows high quality water to be taken. Furthermore, since the holding pipe 4 is a primary filter and the filter of the intake pipe 2 is a secondary filter, sediment such as dust and sediment can be blocked in two stages, and suction of sediment is further reliably suppressed. be able to. Thus, since the sediment in water can suppress inhalation, the maintenance for removing a sediment can be decreased, and operating efficiency improves.

  Furthermore, since the holding tube 4 floats in the water in a sideways state, water can be taken even if the water depth is low. For this reason, water can be taken efficiently and reliably even in shallow rivers. Further, since the central axis in the longitudinal direction of the intake pipe 2 and the central axis in the longitudinal direction of the holding pipe 4 coincide with each other, the intake pipe 2 and the holding pipe 4 are separated from each other. Even if dust or sediment is sucked into the pipe, it does not reach the water intake pipe 2 and good quality water can be taken.

  Furthermore, since the water intake device 1 of the present embodiment has a structure for taking water in a state of floating in water, it is not necessary to perform civil engineering work on the bottom of the water, and installation in a short period of time and at low cost is possible.

  The present invention can be variously modified without being limited to the above embodiments. For example, the intake pipe 2 and the holding pipe 4 may have a shape other than a cylinder such as a rectangular cylinder or a polygonal cylinder. Further, if the intake pipe 2 and the holding pipe 4 are separated from each other, it is not necessary to match the central axis in the longitudinal direction of the intake pipe 2 with the central axis in the longitudinal direction of the holding pipe 4. Further, the pump 3 may be disposed on the ship without being disposed on the land 6. In this case, the connecting rope 14 is provided between the ship and the holding pipe 4.

  Moreover, although the holding tube 4 is made into the cylinder shape which both ends opened, you may use the bottomed cylinder of the shape which closed the edge part on the opposite side (one end side) from the side in which the intake pipe 2 is inserted. Further, the lower portion 43 of the upper and lower divided position 9 may be a structure provided with a water absorption hole 44. The lower portion 43 is formed of a mesh body or punching metal, and the lower portion 43 is formed on the upper portion 45. It is good also as a structure joined with solder, a bolt, etc.

1 Intake device 2 Intake pipe (secondary filter)
3 Pumping pump 4 Holding pipe (primary filter)
5 Float 6 Land 8 Connection hose 9 Dividing position 10 Cap 11 Socket 14 Connection rope 21 Suction port 22 Drain port 41, 42 Opening 43 Lower part 44 Water absorption hole 45 Upper part

Claims (3)

A horizontally long intake pipe with one end in the length direction serving as a suction port and the other end serving as a water intake;
A pump that is connected to the intake port of the intake pipe via a connection hose and draws water into the intake pipe;
A horizontally-long hollow holding tube into which the intake pipe is inserted along the longitudinal direction so that the suction port is located inside and the intake port is located outside,
A float for imparting buoyancy in water to the holding tube so that the suction port is located in water,
The holding tube is formed with a plurality of water absorption holes in the lower part from the upper and lower split positions along the length direction, the other part is closed, and floats in water in a sideways state,
The holding tube is formed of a cylindrical body that is open at both ends in the longitudinal direction, the opening at one end is closed by covering with a cap, and the opening at the other end is closed by covering with a socket in the state where the intake pipe is inserted. By sucking water only from the water absorption holes in the lower part of the upper and lower divided positions,
The intake pipe is inserted into the holding pipe so as to be movable in the longitudinal direction in the holding pipe, and in the inserted state into the holding pipe, only the suction port is opened in the holding pipe, and a filter nozzle is attached to the suction port. The water intake device is prevented from being detached from the socket and is prevented from coming off from the holding pipe.   The water intake device according to claim 1, wherein the water intake pipe is inserted into the holding pipe in a state where a central axis in the longitudinal direction of the water intake pipe and a central axis in the longitudinal direction of the holding pipe coincide with each other. The water intake apparatus according to claim 1 or 2, wherein the holding pipe is anchored to the land side by a connecting rope .

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