JP2009522501A - Pump and water intake device using the same - Google Patents

Abstract

【Task】
The present invention provides a pump having an improved rotor and a water intake device using the same so as to increase the pumping efficiency of fresh water or seawater.
[Solution]
The water intake device of the present invention connects an internal space portion provided in an intake area where an internal space portion is formed, a tower having a water receiving portion formed in an upper portion, and a water receiving portion and a water tank provided on land. A discharge pipe that is connected to the inner space part on the lower end side of the tower and extends to the intake area, and the end part side is bent upward, and a hood is provided, and the intake pipe provided in the inner space part of the tower Pumps water that has flowed into the internal space through the water receiving portion, provides a rotating shaft suspended from the tower, a bearing portion that is slidable along the rotating shaft, and provides buoyancy A screw that includes an inner cylinder having a space portion, an outer cylinder that surrounds the inner cylinder at a predetermined interval, and a plurality of blades that form a spiral pumping passage between the inner cylinder and the outer cylinder. Provided at the top of the pumping part and screw pumping part Comprising a rotor having a centrifugal pumping unit for discharging by centrifugal force pumping water in the radial direction by the clew pumping unit, driving means for driving the rotor provided in the tower, the.
[Selection] Figure 3

Description

  The present invention relates to a pump and a water intake device using the pump, and more particularly to a pump having an improved rotor so that the pumping efficiency of fresh water or seawater can be increased, and a water intake device using the pump.

  Usually, pumps are roughly classified into turbo type and positive displacement type when viewed from the viewpoint of operation principle. The turbo pump has a relatively small device as compared with the delivery flow rate, and is used for a low head and large capacity, and a centrifugal pump belongs to this. The positive displacement pump is used for a high head and small flow rate, and the delivery flow rate is almost constant under any delivery head conditions, and includes a reciprocating pump, a screw pump, etc. including a gear pump.

  The centrifugal pump is composed of an impeller and a casing, causes a pumping fluid to rotate at a high speed by the impeller, causes a centrifugal force, and uses a pressure change caused by the centrifugal force to convey the fluid from the center of the impeller to the outer peripheral side. It is. The gear pump is a system in which two gears are engaged in a casing and rotate to push fluid from the suction side to the delivery side. This gear pump is suitable for small capacity pumps and is mainly used to feed out oil such as lubricating oil.

  On the other hand, as disclosed in Korean Registered Utility Model No. 0167567, the screw pump is configured such that a screw impeller having an anti-scattering film is inserted inside a case member having a coupling port and a large number of guide vanes. A configuration is disclosed.

  As can be seen from the comparison of the configurations described above, the centrifugal pump, which is a turbo pump, has a typical advantage that a large flow rate can be delivered, but the delivery head is small, and the gear pump, which is a positive displacement pump, has an arbitrarily large delivery head. While high efficiency can be obtained, the delivery flow rate cannot be increased due to its structure. Although the screw pump can pump a large volume of water, it has a disadvantage that the water head cannot be raised.

  And, when using such screw pumps or centrifugal pumps for taking fresh water for waterworks or taking seawater for supplying to aquaculture, the pumping efficiency of water is relatively low, so a large maintenance cost is required. There is such a problem.

  The present invention has been devised in order to solve the above-described problems, and an object of the present invention is to provide a pump capable of relatively increasing the pumping efficiency of water using the rotational force and centrifugal force of a screw. There is a place to provide the water intake equipment used.

  Another object of the present invention is to provide a water intake device that is easy to maintain and that allows easy adjustment of the water intake depth.

  Still another object of the present invention is to provide a water intake device that can maintain the water intake position constant from the water surface and can convert centrifugal force into the rising force of water.

  In order to achieve the above-described object, a pump according to the present invention is provided between a rotating cylinder rotatably supported by a rotating shaft provided on a frame, and an inner peripheral surface of the rotating cylinder and an outer peripheral surface of the rotating shaft. And a rotor having a screw pumping part having a screw forming a pumping passage, and a centrifugal pumping part provided at an upper part of the screw pumping part to discharge water pumped by the screw pumping part in a radial direction by centrifugal force. It is characterized by becoming.

  In the present invention, the screw pumping unit gradually reduces the diameter of the rotating cylinder and the screw from the lower end to the centrifugal pumping unit.

  As an alternative, the pump of the present invention has an inner cylinder that is rotatably supported by a rotation shaft provided in a frame, an outer cylinder that surrounds the inner cylinder at a predetermined interval, and a spiral shape between the inner cylinder and the outer cylinder. A rotor having a screw pumping portion having a plurality of blades forming a pumping passage of the pump, and a centrifugal pumping provided at an upper portion of the screw pumping portion to discharge water pumped by the screw pumping portion in a radial direction by a centrifugal force It is characterized by comprising.

  In the present invention, the space between the outer peripheral surface of the inner cylinder and the outer cylinder is kept constant, and the diameters of the inner cylinder and the outer cylinder gradually increase from the lower end to the upper side.

  A pumping device according to the present invention for achieving the above-described object is provided with an internal space portion provided in a water intake site in which an internal space portion is formed, a tower having a water receiving portion formed in an upper portion, and the water receiving portion A discharge pipe connecting a water storage tank provided on land, a water intake pipe provided with a hood that is communicated with the internal space on the lower end side of the tower, extends to the water intake, and is bent upward at the end side; The pump is provided in the internal space of the tower and pumps the water that has flowed into the internal space through the intake pipe into the water receiving portion. An inner cylinder having a bearing portion that is slidably provided and a space for providing buoyancy, an outer cylinder that surrounds the inner cylinder at a predetermined interval, and a helical pumping passage between the inner cylinder and the outer cylinder Screw port with multiple blades forming A rotor provided with a ping unit, a centrifugal pumping unit provided at an upper portion of the screw pumping unit and discharging water pumped by the screw pumping unit in a radial direction by a centrifugal force, and provided in the tower to drive the rotor And a driving means for driving.

  In the present invention, the driving means includes a driven pulley having a length substantially the same as a stroke distance caused by the floating of the rotor along the rotation axis of the bearing portion, and is connected to the driven pulley and a belt provided in the tower. A motor having a driven pulley.

  The screw pumping portion is maintained constant between the outer peripheral surface of the inner cylinder and the outer cylinder, and gradually increases in diameter as the diameters of the inner cylinder and the outer cylinder go from the lower end to the upper side.

  As described above, in the pump according to the present invention and the water intake device using the pump, the pumping means in the tower provided in the water intake site has the screw pumping part and the centrifugal pumping part. The water pumping force by the water and the suction force can work simultaneously to increase the pumping power of the water.

BEST MODE FOR CARRYING OUT THE INVENTION

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  A water intake device according to the present invention is provided on a side adjacent to a river, a lake, and the sea, takes fresh water, seawater, etc. into a coastal side through a water intake pipe extending to a water intake station side, and then stores the water on a land. One example is shown in FIG. 1 and FIG.

  Referring to the figure, the water intake device 10 is provided on a river, lake or seaside, has an internal space portion 11 formed therein, and a tower 13 having a water receiving portion 12 formed thereon, and is installed on the land for aquaculture. A water storage tank 100 for storing water to supply water as an industrial water, industrial water, and a discharge pipe 14 connecting the water receiving section 12 provided on the upper side of the tower 13 and the water storage tank 100. And an intake pipe 16 that communicates with the internal space portion 11 on the lower end side of the tower 13 and extends to the deep sea side of the river, lake, and sea, the end portion side is bent upward, and a hood 15 is provided. Further, the water receiving portion 12 is pumped into the space portion 11 of the tower 13 so that the seawater supplied to the internal space portion 11 via the intake pipe 16 can be discharged to the water storage tank 100 side via the discharge pipe 14. Pumping means 20 is provided.

  The tower 13 is a concrete structure, and an internal space portion 11 is formed in a vertical direction inside. The water receiving portion 12 has an inner periphery so that water supplied from the pumping means 20 can be received at an upper portion thereof. Formed along the surface. The water receiving part 12 is formed with a flow path along the inner peripheral surface of the tower so that water pumped from a centrifugal pumping part of the rotor described later can be discharged to the discharge pipe 14.

  Although not shown in the drawing, an observation deck may be provided at the top of the tower, and an additional facility may be provided on the outer peripheral surface of the tower 13.

  The pumping means 20 is for pumping the water that has flowed into the internal space 11 of the tower 13 through the water intake pipe 16 into the water receiver 12, and one embodiment thereof is shown in FIG.

  Referring to the figure, the pumping means 20 is provided in the internal space portion 11 of the tower 13 and pumps water flowing into the internal space portion 11 through the intake pipe 16 to the water receiving portion 12 side. Then, a rotor 21 having a screw pumping part 22 for vertically raising water, a centrifugal pumping part 23 for pumping water radially from the screw pumping part 22, and a drive part 25 for driving the rotating shaft 24 of the rotor 21 are provided. Prepare.

  The screw pumping portion 22 of the rotor 21 includes a rotary cylinder 22a that surrounds the rotary shaft 24 provided at a predetermined interval around the rotary shaft 24 that is vertically rotatable in the internal space 11, and an outer peripheral surface of the rotary shaft 24 and the rotary cylinder 22a. The screw 22c is provided between the inner peripheral surface and the spiral pumping passage 22b. Here, as shown in FIG. 3, the screw pumping unit 22 has a relatively wide initial water intake area so that the diameter of the screw 22c and the rotating cylinder 22a gradually decreases from the lower part to the upper part. It is suitable for doing.

  The centrifugal pumping portion 23 of the rotor 21 includes a lower plate member 23a extending in a radial direction from an upper end portion of the rotary cylinder 22a, an upper plate member 23b provided on the rotary shaft 24 and spaced apart from the lower plate member 23a by a predetermined distance, A blade 23c extending in the radial direction about the rotation shaft 24 is provided between the upper plate member 23b and the lower plate member 23a. The blade 23c is formed to be inclined at a predetermined angle in the spiral direction. Since the rotary cylinder 22a is connected to the rotary shaft 24 and the screw 22c, the screw pumping unit 22 and the centrifugal pumping unit 23 rotate together with the rotary shaft 24.

  On the other hand, the rotor 21 is rotatably provided by supporting both ends of the rotary shaft 24 on the tower, but at least one side of the outer peripheral surface of the screw pumping portion is a journal bearing in order to suppress vibration during rotation. Alternatively, it is preferably supported by a roller or the like. Of course, the rotating shaft 24 can be rotatably supported by another frame.

  The driving unit 25 may include a motor 25 a provided on the tower 13 for driving the rotating shaft 24. The driving shaft and the rotating shaft 24 of the motor 25a may be a power transmission device such as a driving pulley, a driven pulley, and a belt.

  FIG. 4 shows another embodiment of the pumping means 20 according to the present invention. In the present embodiment, the same reference numerals as those in the previous embodiment denote the same components.

  Referring to the drawing, the pumping means 30 includes a rotating shaft 31 suspended from the tower 13, a rotor 32 provided on the rotating shaft, and a drive unit 35 for driving the rotating shaft 31, as in the above-described embodiment. .

  The rotor 32 includes a screw pumping portion 33 and a centrifugal pumping portion 34, and the screw pumping portion 33 has an inner cylinder 33a provided coaxially with the rotary shaft 31, and an inner cylinder 33a spaced apart from the inner cylinder at a predetermined interval. An outer cylinder 33b having a relatively larger diameter than the diameter of the cylinder 33a and a blade 33d provided between the inner cylinder 33a and the outer cylinder 33b to form a pumping passage 33c are provided.

  The centrifugal pumping portion 34 has substantially the same structure as that of the above embodiment, but includes a lower plate member 34a extending in a radial direction from an upper end portion of the outer cylinder 33b, and the lower plate member 34a provided on the rotary shaft 31. An upper plate member 34b spaced apart by a predetermined distance is provided, and a blade 34c extending in the radial direction about the rotation shaft 31 is provided between the upper plate member 34b and the lower plate member 34a. It is desirable that the number of the blades 34c is the same as the number of the blades 33d, and is positioned on an extension line in the radial direction from the blades 33d.

  Since the driving unit 35 has the same structure as that of the above embodiment, it will not be described again.

  5 and 6 show still another embodiment of the pumping means 40 according to the present invention.

  Referring to the figure, the pumping means 40 includes a rotary shaft 41 suspended from the tower 13 and a rotor that can be moved up and down along the rotary shaft 41 by buoyancy caused by water flowing into the internal space of the tower. 42 and a drive unit 46 that is provided in the tower 13 and rotates the rotor 42.

  The rotor 42 has a space for providing buoyancy, and includes a screw pumping unit 43 and a centrifugal pumping unit 44. The screw pumping portion 43 has a buoyancy space 43a and is slidably provided along the rotation shaft 41. An outer cylinder 43c surrounding the inner cylinder 43b is spaced apart from the inner cylinder 43b by a predetermined distance. The blade 43e is provided between the inner cylinder 43b and the outer cylinder 43c and forms a pumping passage 43d.

  The slidable device with respect to the rotating shaft 41 has a configuration in which a bearing portion 43f penetrating the buoyancy space of the inner cylinder 43b is provided, and the rotating shaft 41 is slidably supported by the bearing portion 43f. A bearing portion 43g may be provided between the bearing portion 43f and the rotary shaft 41.

  The centrifugal pumping unit 44 has substantially the same structure as that of the above embodiment, and will not be described again.

  The drive unit 46 extends from the upper side of the rotor 42 along the rotary shaft 41 and has a predetermined pulley 46a having a predetermined diameter, a drive pulley 46c provided on a rotary shaft of a motor 46b provided in the tower 13, and A belt 46d is provided to connect the driven pulley 46a and the driving pulley 46c. The driven pulley 46a of the driving unit has a length corresponding to a stroke distance due to the floating of the rotor 42.

  As shown in FIG. 7, the drive unit 46 has a guide 51 provided on the inner peripheral surface of the tower 13, a motor 53 provided on a frame 52 that moves up and down along the guide 51, and a drive shaft of the motor 53. And a rotating shaft 54 connected to the motor. In this case, the rotor 42 should be provided so as to be movable up and down by the buoyancy space, and the rotor 42 can be rotatably supported by a plurality of guide rollers provided on the inner peripheral surface of the tower 13.

On the other hand, as shown in FIG. 8, the screw pumping portion 43 expands as the inner cylinder 43b and the outer cylinder 43c are moved upward while maintaining the width of the pumping space, that is, the distance between the inner cylinder 43b and the outer cylinder 43c. It is desirable to make it diameter.
The operation of the water intake device according to the present invention configured as described above will be described as follows.

  First, as shown in FIGS. 1 and 2, clean water flows into the internal space 11 of the tower 13 through a water intake pipe 16 extending from the tower 13. At this time, the end of the intake pipe 16 is bent upward from the intake area, and the hood 15 is provided at the end, so that mud and foreign matter can be prevented from flowing through the intake pipe.

  As described above, the rotor 21 is rotated by driving the motor as the driving unit 25 as shown in FIG. 2 with water flowing into the internal space 11. Water rises through a spiral passage formed by a spiral screw 22c provided between the cylinder 22a and the rotating shaft 24, that is, a pumping passage 22b. The water pumped in this way is pumped again in the radial direction by centrifugal force at the centrifugal pumping section 23. In this process, since the suction input is provided to the screw pumping unit 22 by the centrifugal pumping unit 23, the pumping efficiency can be improved. In particular, as shown in FIG. 3, when the lower portion of the screw pumping unit 22 is expanded, the initial water intake amount can be increased, so that the pumping supply amount can be increased to the centrifugal pumping unit 23, thereby increasing the pump efficiency. it can. That is, since the linear velocity of the screw at the lower end of the screw pumping portion 22 is increased, the water intake force can be increased.

  The water thus pumped is stored in the water storage tank 100 through the water receiving part 12 and the discharge pipe 14.

  On the other hand, as shown in FIGS. 5 and 6, when the buoyancy space 43 a is formed in the rotor 42, the rotor 42 floats due to water flowing into the internal space of the tower 13. At this time, the motor 46 b The belt 46d connecting the drive pulley 46c and the driven pulley 46a moves up and down over the driven pulley 46a, so that the rotational force of the motor can be transmitted to the rotor.

  In particular, as shown in FIG. 8, when the width of the screw pumping part gradually increases from the lower end to the upper part, the centrifugal force due to the rotation of the rotor 42 acts on the pumped water. Since the blades 43e are formed in a spiral shape and maintain an inclined state, a component force that raises water upward is generated by centrifugal force.

  Accordingly, the pumping force of the water pumped by the screw pumping unit can be increased, and the water thus pumped is pumped again by the centrifugal pumping unit, so that the pumping efficiency can be increased.

  Further, the pumping means that is moved up and down to the floating space can pump water flowing into the internal space 11 of the tower 13 at a certain depth adjacent to the surface layer. In particular, when seawater is taken in, water can be pumped regardless of changes in the level of seawater that has flowed into the internal space 11 due to tides.

  Although the present invention has been described with reference to an embodiment shown in the drawings, this is merely illustrative and various modifications and equivalents will occur to those skilled in the art. It will be appreciated that various embodiments are possible.

  Therefore, the true protection scope of the present invention should be determined only by the claims.

The front view which showed roughly the state in which the water intake apparatus which concerns on this invention was provided. Sectional drawing of the water intake apparatus provided in the tower which concerns on this invention. Sectional drawing which showed one Example of the water intake apparatus which concerns on this invention. Sectional drawing which showed the other Example of the water intake apparatus which concerns on this invention. Sectional drawing which showed other Example of the water intake apparatus which concerns on this invention. FIG. 6 is a partially cutaway perspective view showing an excerpt of the rotor shown in FIG. 5. The perspective view which showed one Example of the drive part provided in the tower. Sectional drawing which showed the other Example of the water intake means which concerns on this invention.

Claims (7)

  A rotating cylinder that is rotatably supported by a rotating shaft provided in the frame; and a screw pumping unit having a screw that is provided between the inner peripheral surface of the rotating cylinder and the outer peripheral surface of the rotating shaft to form a pumping passage. A pump comprising a rotor having a centrifugal pumping portion provided at an upper portion of the screw pumping portion for discharging water pumped by the screw pumping portion in a radial direction by centrifugal force.   2. The pump according to claim 1, wherein the screw pumping unit gradually reduces the diameter of the rotating cylinder and the screw from the lower end to the centrifugal pumping unit.   An inner cylinder rotatably supported by a rotation shaft provided in the frame; an outer cylinder surrounding the inner cylinder at a predetermined interval; and a plurality of spiral pumping passages formed between the inner cylinder and the outer cylinder And a rotor having a screw pumping unit provided with blades and a centrifugal pumping unit provided at an upper portion of the screw pumping unit to discharge water pumped by the screw pumping unit in a radial direction by centrifugal force. To pump.   The distance between the outer peripheral surface of the inner cylinder and the outer cylinder is kept constant, and the diameters of the inner cylinder and the outer cylinder gradually increase from the lower end to the upper side. pump. A tower having an internal space portion formed in the intake area and formed with an internal space portion and a water receiving portion formed in the upper portion, and a discharge pipe connecting the water receiving portion and a water tank provided on the land,
A water intake pipe which is communicated with the internal space portion on the lower end side of the tower, extends to the water intake and is bent upward at the end side, and provided with a hood;
The pump is provided in the internal space of the tower and pumps water flowing into the internal space through the intake pipe into the water receiving portion, and a rotating shaft suspended from the tower;
A bearing portion slidably provided along the rotation shaft, an inner cylinder having a space portion for providing the buoyancy, an outer cylinder surrounding the inner cylinder at a predetermined interval, and between the inner cylinder and the outer cylinder A screw pumping unit having a plurality of blades forming a helical pumping passage, and a centrifugal pumping unit provided at the upper part of the screw pumping unit to discharge water pumped by the screw pumping unit in a radial direction by centrifugal force A rotor with
A water intake device comprising drive means provided on the tower for driving the rotor.   The driving means includes a driven pulley having a length substantially the same as a stroke distance due to the floating of the rotor along the rotation axis on the bearing portion, and a driving pulley provided on the tower and connected to the driven pulley by a belt. The water intake device according to claim 5, further comprising a motor having   The screw pumping portion is maintained constant between the outer peripheral surface of the inner cylinder and the outer cylinder, and the diameter of the inner cylinder and the outer cylinder gradually increases as it goes from the lower end to the upper side. Item 7. The water intake device according to Item 6.

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