JP2008144599A - Suspended matter removing device of float type pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent suspended matter from depositing in an opening peripheral edge part 52 of a suction port 5 of a float type pump 1. <P>SOLUTION: This suspended matter removing device 6 has a rotary shaft part 61 inserted into the suction port 5 along the axis C extending in the vertical direction of the suction port 5 of the float type pump 1, an impeller 62 installed in a lower end part of the rotary shaft part 61 and rotating around the axis C by a suction water flow caused by driving of the pump, and a rotary removing part 63 installed in an upper end part of the rotary shaft part 61 and rotating around the axis C in the vicinity of the opening peripheral edge part 52 of the suction port 5 in response to rotation of the impeller 62. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a floating substance removing device that has a suction port that opens upward in the vicinity of a water surface and is attached to the suction port in a float-type pump that sucks floating matter floating near the water surface from the suction port.

  2. Description of the Related Art Conventionally, a float type pump that floats on a water surface by a float in order to remove floating substances such as scum floating on the water surface in a sewage pond or the like is known (see, for example, Patent Document 1).

This float pump has a suction port that opens upward in the vicinity of the water surface, and is configured to suck in suspended matter floating near the water surface from the suction port by driving the pump.
Japanese Utility Model Publication No. 56-17756

  By the way, since the suction port of the float pump is opened upward in the vicinity of the water surface as described above, there is a case where suspended matter accumulates on the peripheral edge of the opening. In that case, the accumulated floating substance becomes like a wall surrounding the suction port, and when the pump is driven by the wall, there is a problem that the inflow of water to the suction port is hindered.

  This invention is made | formed in view of this point, The place made into the objective is to prevent that a suspended | floating matter accumulates in the opening peripheral part of the suction inlet of a float type pump.

  The present invention prevents floating matter from accumulating on the peripheral edge of the opening by attaching a floating substance removing device having a rotation removing part that rotates in the vicinity of the peripheral edge of the opening to the suction port of the float pump. The suspended matter deposited on the periphery of the opening was removed.

  According to one aspect of the present invention, the floating substance removing device has a suction port that opens upward in the vicinity of the water surface, and the suction port in the float-type pump that sucks the floating substance floating in the vicinity of the water surface from the suction port. On the other hand, a main body part to be attached is provided.

  The main body is attached to a rotary shaft portion inserted into the suction port along a central axis extending in a vertical direction of the suction port, and an upper end portion of the rotary shaft portion. A rotation removing portion that rotates around the central axis in the vicinity of the opening peripheral edge of the suction port when the rotation shaft portion rotates.

  The float pump has a suction port that opens upward in the vicinity of the water surface, and sucks suspended matter floating in the vicinity of the water surface from the suction port. For this reason, as described above, floating substances are likely to accumulate on the peripheral edge of the opening of the suction port.

  In the above-described configuration, the floating substance removing device is attached to the suction port, and this floating substance removing device has a rotation removing unit attached to a rotating shaft that rotates as the pump is driven. . For this reason, when the pump is driven, the rotation removing portion rotates in the vicinity of the opening peripheral portion, so that the floating matter deposited on the peripheral portion of the opening is removed and the floating matter is deposited on the peripheral portion of the opening. That itself is suppressed.

  In this way, it is possible to prevent the floating pump from being hindered by the floating matter deposited on the peripheral edge of the opening, and the suction of the floating matter is improved.

  Further, since the floating substance removing device rotates as the pump is driven, it is not necessary to provide a separate power source for the rotation, which is economical.

  Here, the main body further includes an impeller that is attached to the rotary shaft and disposed in the suction port, and that rotates around the central axis together with the rotary shaft by the suction water flow accompanying the driving of the pump. It may be provided.

  By doing so, when the pump is driven, the impeller rotates together with the rotating shaft portion by the suction water flow, so the rotation removing portion rotates in the vicinity of the opening peripheral edge portion.

  Alternatively, the rotating shaft portion may be coaxially connected to the drive shaft of the pump.

  By doing so, since the rotating shaft portion rotates when the pump is driven, the rotation removing portion rotates in the vicinity of the opening peripheral edge portion.

  The rotation removal portion is a blade shape extending radially outward from the central axis, and a plurality of rotation removal portions are attached at equal intervals in the circumferential direction. It is good also as being mounted on the opening peripheral part of the said suction inlet.

  In this way, the suspended matter removing device can only insert the impeller and the rotating shaft portion into the suction port of the float pump and place the blade-like rotation removing portion on the periphery of the opening of the float pump. The installation is complete. Therefore, the attachment is very easy, and it can be easily attached to an existing float pump by a retrofit.

  The main body is in contact with the inner peripheral surface or outer peripheral surface of the suction port, so that the main shaft is supported on the suction port so that the rotation shaft is on the central axis. It is good also as providing the part.

  Since the rotation of the main body portion is supported by the shaft support portion, the main body portion rotates stably, thereby effectively removing the suspended matter deposited on the peripheral edge portion of the opening.

  The shaft support portion may be attached to the lower surface of each blade-shaped rotation removing portion.

  By doing so, when the opening of the suction port to which the floating substance removing device is attached is viewed from above, the shaft support portion is hidden under the rotation removing portion. This prevents, for example, the suspended matter from being caught on the shaft support portion. That is, for example, when the shaft support portion and the rotation removal portion are separated and the opening of the suction port is viewed from above, when the shaft support portion and the rotation removal portion are both exposed, the shaft support portion or Where the floating removal part has a higher probability of floating or sticking to the rotation removal part, the shaft support part is attached to the rotation removal part integrally, and the floating part adheres or accumulates as much as the shaft support part is hidden. Less. As a result, the suspended matter is prevented from being caught on the shaft support portion, so that the maintainability of the float pump is improved.

  It is preferable that an opening is formed in the upper end portion of the main body, and thereby the upward opening of the suction port is exposed upward through the opening of the main body.

  By doing so, it becomes possible to satisfactorily suck the floating substance from the suction port, and the floating pump suction efficiency of the float pump is improved, and the floating substance adheres to and accumulates on the floating substance removing device. It is suppressed.

  As described above, according to the present invention, the floating substance is deposited on the peripheral edge of the opening by attaching the floating substance removing device having the rotation removing part that rotates at the peripheral edge of the opening to the suction port of the float pump. This prevents the float pump from sucking in well. Further, since the floating substance removing device operates (rotates) as the float pump is driven, it is not necessary to separately provide a power source for operating the floating substance removing device, which is advantageous in terms of energy saving.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

  1-3 has shown the float type pump 1 with which the suspended | floating matter removal apparatus which concerns on embodiment of this invention was attached. The float pump 1 is a pump that is arranged floating on a water surface of a sewage pond or the like, and is for removing floating substances such as scum floating near the water surface. In other words, the float pump 1 is controlled by a controller (not shown) so as to be driven at a predetermined time for a predetermined time by using, for example, a 24-hour timer. Floating matter such as floating scum is periodically removed.

  The float pump 1 includes a centrifugal pump body 2, a frame 3 that supports the pump body 2, and a float 4 that is attached to the frame 3.

  The pump body 2 includes a centrifugal impeller 21, a pump casing 22 that covers the centrifugal impeller 21, and a submersible motor 23 that rotates the centrifugal impeller 21.

  The submersible motor 23 includes a motor (not shown) and a motor casing 23 a that covers the motor, and the pump casing 22 has a rear surface side (left side in FIGS. 1 and 2) with respect to the pump casing 22. It is fixed. The drive shaft 24 of the motor is disposed in the horizontal direction and extends forward (right direction in FIGS. 1 and 2), and the centrifugal impeller 21 is disposed at the tip of the drive shaft 24 located in the pump casing 22. Is attached. As a result, the centrifugal impeller 21 rotates around an axis extending in the horizontal direction.

  On the front side of the pump casing 22 that houses the centrifugal impeller 21, a suction port 5 that protrudes forward from the central portion of the pump casing 22 and is bent upward is attached. The suction port 5 has a bell mouth shape whose diameter increases as it goes upward and opens upward, and the peripheral edge 52 of the upward opening 51 has a flange shape that expands in the radial direction.

  The pump casing 22 is formed with a discharge portion 25 that protrudes downward. A discharge pipe 26 is attached to the lower end opening of the discharge section 25 so as to extend rearward from the lower position of the submersible motor 23. A discharge port 26a opened rearward of the discharge pipe 26 is not illustrated. Another flexible discharge pipe is attached. The floating matter sucked from the suction port 5 is discharged out of the sewage pond or the like through these discharge pipes.

  The frame 3 is formed in a substantially rectangular parallelepiped frame shape including four upper and lower frames 31 arranged extending in the vertical direction in each of the front, rear, left and right with the pump body 2 as the center, and the pump casing The pump body 2 is supported by the frame 3 by fixing the front portion of 22 to the lower end portion of the frame 3 via the bracket 27.

  The float 4 is made of, for example, foamed polyethylene, and is fixed in a state of being extrapolated with respect to the upper ends of the four upper and lower frames 31 in the frame 3. The four floats 4 arranged so as to surround the pump body 2 allow the frame 3 and the pump body 2 fixed to the frame 3 to float on the water surface, and the opening 51 of the suction port 5 is, for example, It is positioned so as to be at a lower position by a predetermined distance with respect to the water surface. As described above, the opening 51 of the suction port 5 is positioned in the vicinity of the water surface, so that when the pump main body 2 is driven, floating matter floating near the water surface is sucked into the suction port 5 from the opening 51. .

  As shown in FIGS. 1 to 4, a floating substance removing device 6 is attached to the suction port 5 of the float pump 1 to remove the floating substances deposited on the peripheral edge 52 of the opening.

  The floating substance removing device 6 includes a rotating shaft portion 61 inserted into the suction port 5, an impeller 62 attached to the lower end portion of the rotating shaft portion 61, and a rotation attached to the upper end portion of the rotating shaft portion 61. A removal unit 63 and a shaft support unit 64 attached to the rotation removal unit 63 are provided.

  The rotating shaft 61 extends in the vertical direction along the central axis C of the suction port 5, and the impeller 62 attached to the lower end of the rotating shaft 61 is disposed in the suction port 5. Are arranged at predetermined positions.

  The impeller 62 includes a plurality of (three in the illustrated example) blades 62a attached at equal intervals in the circumferential direction with respect to the rotating shaft portion 61. As will be described later, It rotates with the rotating shaft 61 around the central axis C by the suction water flow accompanying the driving. That is, the impeller 62 is configured to be an axial flow impeller having the suction port 5 as a casing. Moreover, the front edge (upper edge) of each blade | wing 62a inclines downward toward the radial direction outward, and this suppresses that the suck | inhaled suspended | floating matter is caught by the blade | wing 62a.

  An attachment disc 65 having a diameter larger than that of the rotation shaft portion 61 and smaller than that of the suction port 5 is fixed to the upper end of the rotation shaft portion 61. A plurality of (three in the illustrated example) blade-like rotation removing portions 63 extending in the circumferential direction are attached at equal intervals in the circumferential direction. That is, each rotation removal part 63 is attached to the attachment disc 65 radially. The number of blade-like rotation removing units 63 is not particularly limited.

  The distal end portion of each rotation removing portion 63 extends to the position of the opening peripheral edge portion 52 of the suction port 5, and each distal end portion is placed on the opening peripheral edge portion 52. Further, as shown in FIG. 5, the lower surface of each rotation removing portion 63 is formed in a circular arc shape in cross section, so that each rotation removing portion 63 is brought into point contact with the opening peripheral edge portion 52. ing. Further, the upper surface of the distal end portion of each rotation removing portion 63 is formed in a tapered shape so as to taper from the proximal end side toward the distal end side.

  The shaft support portions 64 are attached so as to protrude downward from the lower surface of each rotation removing portion 63, so that the plurality of shaft support portions 64 are equally spaced in the circumferential direction, respectively. The suction port 5 is substantially in contact with the inner peripheral surface of the upper end.

  The floating substance removing device 6 having the above-described configuration is attached by being inserted into the suction port 5 from the upward opening 51 of the suction port 5 in the float pump 1. In the attached state, the lower surface of each rotation removing portion 63 is placed on the opening peripheral edge portion 52, whereby the impeller 62 is arranged at a predetermined position in the suction port 5. In addition, each shaft support portion 64 comes into substantially contact with the inner peripheral surface of the suction port 5, whereby the suspended matter removing device 6 is moved around the central axis C of the suction port 5 with respect to the suction port 5. To be relatively rotatable. In the present embodiment, the suspended matter removing device 6 is located below the water surface.

  As described above, when the pump main body 2 is driven at a predetermined time, when the water and the suspended matter are sucked from the suction port 5, the impeller 62 is rotated by the suction water flow, thereby removing each rotation. The part 63 rotates on the opening peripheral part 52. Even if a suspended matter is accumulated on the opening peripheral portion 52 by the rotation of the rotation removing portion 63, the floating matter is removed from the opening peripheral portion 52, and the removed suspended matter is finally sucked into the suction port 5. Sucked from. In addition, the rotation itself of the rotation removing unit 63 is restrained from depositing suspended matter on the opening peripheral edge 52. As a result, when suspended matter accumulates on the peripheral edge 52 of the opening, and the suspended matter is like a wall surrounding the suction port 5, the inflow of water into the suction port 5 is inhibited when the pump is driven. However, by suppressing the accumulation of such floating substances, the inflow of water and floating substances to the suction port 5 is surely performed. As a result, the floating substance floating in the sewage pond or the like can be effectively removed by the float pump 1.

  In addition, since the floating substance removing device 6 is rotated by the suction water flow accompanying the driving of the pump body 2, a separate driving source for rotating the floating substance removing device 6 is not required, and energy saving is achieved. Can be planned.

  In addition, since the suspended matter removing device 6 is installed by simply inserting it into the suction port 5 of the float pump 1 and placing it on the peripheral edge 52 of the opening, On the other hand, it can be easily attached later.

  Moreover, since the lower surface of each rotation removal part 63 is formed in the cross-section arc shape, since the rotation removal part 63 and the opening peripheral part 52 are in point contact, the rotational resistance of the suspended | floating matter removal apparatus 6 becomes small, The opening peripheral part 52 rotates favorably by the suction water flow, and the floating substance removal effect is further improved.

  Further, the upper end portion of the floating substance removing device 6 includes an attachment disc 65 having a smaller diameter than the opening 51 of the suction port 5 and a blade-like rotation removal portion 63 extending radially from the attachment disc 65. As shown in FIG. 1, the upward opening 51 of the suction port 5 is exposed upward. As a result, water and suspended matters can be satisfactorily sucked from the suction port 5. In addition, what is necessary is just to set the diameter of the attachment disc 65 suitably.

  In addition, since the shaft support portion 64 that supports the rotation of the suspended matter removing device 6 is integrally attached to the lower surface of the rotation removal portion 63, the shaft support portion 64 opens the suction port 5 from above. As seen (in plan view), it is not exposed in the suction port 5 (see FIG. 1), and thereby, for example, the suspended matter is suppressed from being caught on the shaft support portion 64. As a result, the maintainability of the float pump and the suspended matter removing device 6 can be improved.

  The floating substance removing device 6 includes an impeller 62, and each rotation removing part 63 is rotated on the opening peripheral part 52 by the suction water flow accompanying the drive of the pump body 2. For example, FIG. As shown in FIG. 6, the suspended matter removing device 9 may be connected to the drive shaft 74 of the submersible motor 73.

  That is, the pump body 7 of the float pump shown in FIG. 6 has its suction port 8 extending vertically in the vertical direction coaxially with the drive shaft 74 of the submersible motor 73 without being bent halfway. The tip (upper end) is extended to a position in the suction port 8. Reference numeral 71 denotes a centrifugal impeller, reference numeral 72 denotes a pump casing, and reference numeral 75 denotes a discharge portion.

  On the other hand, the floating substance removing device 9 includes a rotating shaft portion 91, a rotation removing portion 93, a shaft support portion 94, and a mounting disc 95, and is impeller to the floating matter removing device 6 shown in FIG. The lower end of the rotary shaft portion 91 is connected to the upper end of the drive shaft 74 via a coupling 100. In addition, the coupling 100 has the rotating shaft portion 91 and the drive shaft in a state where the floating substance removing device 9 is attached to the suction port 8 (a state where the lower surface of each rotation removing portion 93 is placed on the opening peripheral edge portion 82). 74 can be adjusted in length so as to be integrally rotatable, and this coupling 100 allows the suspended matter removing device 9 to be easily attached to various float pumps. .

  Even in this configuration, each rotation removing section 93 rotates on the opening peripheral edge 82 when the pump body 7 is driven. Therefore, the floating substance on the opening peripheral part 82 is removed and the floating substance itself is suppressed from being deposited on the opening peripheral part 82.

  Further, since the floating substance removing device 9 also rotates as the pump body 7 is driven, a separate drive source for rotating the floating substance removing device 9 is not required, and energy saving can be achieved. In addition, it can be easily attached to an existing float pump by retrofitting.

  In the floating substance removing device 6, each blade-like rotation removing unit 63 is arranged extending in the horizontal direction. For example, as shown in FIG. 7, each rotation removing unit 67 is arranged in the radial direction. You may arrange | position so that it may incline below toward outward. In this case, as shown in FIG. 7, the attachment disc 66 may be positioned above the water surface. By doing so, the mounting disk 66 and the like are positioned on the surface of the water, so that obstacles when sucking the floating material are reduced, and the suction of the floating material is further improved. Such a configuration can be similarly applied to the suspended matter removing apparatus 9 shown in FIG.

  In the embodiment, the shaft support portions 64 and 94 are arranged in the radial direction of the rotation removal portions 63 and 93 in order to bring the shaft support portions 64 and 94 into contact with the inner peripheral surfaces of the suction ports 5 and 8. Although it is attached at a predetermined position, for example, although not shown in the drawing, each shaft support portion is brought into contact with the outer peripheral surface of the suction ports 5 and 9 (for example, the outer peripheral surfaces of the opening peripheral portions 52 and 82). You may make it attach a support part to the front-end | tip part of each rotation removal part 63,93. The shaft support portions 64 and 94 may be attached to the attachment disks 65 and 95, for example, separately from the rotation removing portions 63 and 93.

  Furthermore, in the suspended | floating matter removal apparatus 6 shown in FIG. 2 etc., the axial support part 64 is made by making the edge part of each blade | wing 62a in the impeller 62 substantially contact | abut to the internal peripheral surface of the suction inlet 5, for example. May be omitted.

  In addition, in the suspended matter removing apparatus 6 shown in FIG. 2 and the like, each rotation removing portion 63 is placed on the opening peripheral edge portion 52. For example, the lower end of each shaft support portion 64 is set downward. The floating substance removing device 6 is attached to the suction port 5 by contacting the inner peripheral surface of the bell mouth-shaped suction port 5 which is reduced in diameter (the movement of the floating substance removing device 6 is restricted downward). You may do it. In that case, the rotation removing portions 63 may be slightly separated from the opening peripheral edge 52 instead of being brought into contact with the opening peripheral edge 52.

  As described above, the present invention is useful in preventing floating substances from accumulating on the peripheral edge of the opening in the suction port of the float pump.

It is a top view of the float type pump with which the suspended | floating matter removal apparatus which concerns on this invention was attached. It is sectional drawing of the partial fracture | rupture of the said float pump. It is a front view of the float pump. It is a perspective view of a floating substance removal apparatus. It is a cross-sectional view of the rotation removal part in a floating substance removal apparatus. It is sectional drawing of the partial fracture | rupture of the float type pump which concerns on other embodiment. It is sectional drawing of the suspended | floating matter removal apparatus which concerns on another embodiment.

Explanation of symbols

1 Float type pump 5, 8 Suction port 51 Opening 52, 82 Peripheral edge 6, 9
61, 91 Rotating shaft portion 62 Impeller 63, 93 Rotation removing portion 64, 94 Shaft support portion

Claims (7)

A floating substance removing device having a suction port that opens upward in the vicinity of the water surface and having a main body portion attached to the suction port in the float type pump that sucks floating matter floating in the vicinity of the water surface from the suction port. Because
The main body is
A rotation shaft portion inserted into the suction port along a central axis extending in the vertical direction of the suction port;
A rotation removing unit that is attached to an upper end portion of the rotating shaft portion and rotates around the central axis in the vicinity of an opening peripheral portion of the suction port by rotating the rotating shaft portion as the pump is driven,
A float removing device for a float pump characterized by comprising: In the suspended matter removing apparatus according to claim 1,
The main body further includes an impeller that is attached to the rotating shaft and disposed in the suction port, and that rotates around the central axis together with the rotating shaft by the suction water flow accompanying the driving of the pump. A float removal device for a float type pump. In the suspended matter removing apparatus according to claim 1,
The float removal device for a float pump, wherein the rotating shaft is coaxially connected to the drive shaft of the pump. The suspended matter removing apparatus according to claim 2,
The rotation removal portion is a blade shape extending radially outward from the central axis, and a plurality of rotation removal portions are attached at equal intervals in the circumferential direction,
Each of the plurality of blade-like rotation removing units is placed on an opening peripheral edge of the suction port. In the floating substance removal apparatus of any one of Claims 1-4,
The main body is in contact with an inner peripheral surface or an outer peripheral surface of the suction port, so that the main shaft is supported on the suction port so that the rotation shaft is on the central axis. A float removing device for a float pump, further comprising a section. In the floating substance removal apparatus according to claim 5,
The float support device for a float type pump, wherein the shaft support portion is attached to the lower surface of each blade-like rotation removal portion. In the suspended | floating matter removal apparatus of any one of Claims 1-6,
An float is removed at the upper end portion of the main body, and the upward opening of the suction port is exposed upward through the opening of the main body. .

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