JPS5852399Y2 - Floating pump for collecting suspended matter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a floating pump that collects and transports scum and floating matter floating on the water surface in a suction water tank, such as a sewage treatment plant, together with the water. The pump body, which is held in ~, is equipped with a trumpet-shaped suction body that opens upward, and floating matter floating on the liquid surface is sucked in through this trumpet-shaped suction body and discharged. Regarding pumps.

Conventionally, in this type of floating pump, as shown in Fig. 1, the pump body 1 is suspended in water by a float 7, and when energized by a cable 17, the impeller of the pump body 1 rotates and floats on the water surface A. Floating substances (not shown) are discharged together with the liquid from an upwardly opened trumpet-shaped suction body 4 through a suction port 3 and to the outside through a discharge pipe or hose 16.

In addition, 12 is a balance float attached to the screw 11, and 8 adjusts the distance between the float 7 and the pump body 1, that is, the distance between the horizontal line 14 of the trumpet-shaped suction body 4 and the water surface A. It is an adjustment member for

Even with the conventional floating pump configured in this way, if the shape or size of the floating object is approximately constant, no particular problem will occur in suctioning it from the trumpet-shaped suction body 4 and discharging it from the discharge hose 16. However, there was a drawback that it was not possible to adequately deal with floating matter that had different properties and shapes, such as scum generated in sewage treatment plants.

In other words, when the floating object is large, the suction water level indicated by α in FIG. 1 is made deeper, and when it is small, the suction water level is adjusted to become shallower to cope with changes in the shape of the floating object. When the suction water level α becomes deeper, the suction speed (2) at which the suction flows inward from the outer circumference of the trumpet-shaped suction body becomes slow, resulting in a disadvantage that the scum collection efficiency deteriorates.

Therefore, an object of the present invention is to provide a floating pump for collecting floating matter that can efficiently collect large floating matter without reducing the suction flow rate even when the suction water level becomes deep.

According to the present invention, a plurality of shielding plates are erected at intervals on the outer peripheral edge of the trumpet-shaped suction body, and some of these shielding plates have a double structure, and the shielding plates can be expanded and contracted. A plurality of elongated holes are provided on the horizontal outer periphery of the trumpet-shaped suction body for freely attaching the float, and an adjustment member is provided on the float to adjust the distance between the float and the trumpet-shaped suction body.

Therefore, when collecting floating objects in relatively deep water, adjust the adjustment member to deepen the suction water level, and
Extend the shielding plates to shorten the distance between adjacent shielding plates.

Then, the area of the suction passage formed between the shortened shielding plates becomes smaller, and the flow velocity becomes faster.

Therefore, relatively large floating objects in deep water can be effectively collected.

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

In these drawings, the same members as those of the conventional floating pump shown in FIG. 1 are given the same reference numerals to avoid redundant explanation.

Now, referring to FIGS. 2 and 3, a plurality of elongated holes 20 having appropriate lengths are bored in the horizontal outer peripheral portion 14 of the upwardly opened trumpet-shaped suction body 4. A plurality of shielding plates 21 are erected with flanges 22 fixed with screws 23.

The height h of the shielding plate 21 is sufficiently large so that it protrudes into the atmosphere from the liquid level A regardless of the depth of the suction water level α.

Further, the shielding plate 21 is configured to be able to change the suction passage area S, that is, the flow velocity, formed between the outer peripheral edge 14 of the trumpet-shaped suction body and the end of the shielding plate.

That is, in the present invention, although not shown in detail, the shielding plate 21 has a partially double structure so as to look like an elastic body.

Since the floating pump according to the present invention is constructed as described above, in order to deal with large cums, that is, floating objects, the distance between the float 7 and the pump body 1 can be adjusted.
Even if the suction water level α is increased, for example, doubled, the suction liquid velocity will not decrease if the shielding plate 21 is appropriately selected and the total suction passage area S is made small, for example, 2 times.

Therefore, even if the suction water level is deepened to cope with large floating objects, the collection efficiency of floating objects will not decrease.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional front view showing a conventional 70-ring pump, Fig. 2 is a front view similar to Fig. 1 showing an embodiment of the present invention, and Fig. 2 is a front view showing an embodiment of the present invention. First example
Front view similar to the figure, Figure 3 is in the direction of arrows ■-■ in Figure 2.
FIG. 2 is a plan view with some parts omitted. 1...Pump body, 3...Suction port, 4
...Trumpet-shaped suction body, 7...Float, 14...Horizontal circumferential edge, 20...Long hole, 21...Shielding Plate, 23... Set screw, S... Suction passage area.

Claims (1)

[Scope of utility model registration request] The pump body, which is suspended in the liquid by a float, is equipped with a trumpet-shaped suction body that opens upward, and floating objects floating on the liquid surface are sucked in and discharged from the trumpet-shaped suction body. In the floating pump, a plurality of shielding plates are erected at intervals on the outer periphery of the trumpet-shaped suction body, and some of these shielding plates have a double structure. A plurality of long holes are provided on the horizontal outer periphery of the trumpet-shaped suction body for telescopically attaching the shielding plate, and an adjustment member is provided on the float for adjusting the distance between the float and the trumpet-shaped suction body. A floating pump for collecting floating matter, characterized in that: