JP3018162U - Fluid suction device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a fluid suction device that effectively takes up even suspended matter and sucks it up. A fluid suction device in which a swirl S is generated in a fluid before being introduced into a suction pipe 2 communicating with a fluid pump so that suspended matter accompanying the fluid is also introduced into the suction pipe 2. Has a spiral shape, and a part thereof in the circumferential direction is opened as the suction port 3. Further, a spiral guide 5 is provided on the outer periphery of the suction pipe 2, a part of the guide 5 in the circumferential direction opens as a suction port 6, and the suction port 6 communicates with the suction pipe 2. . Further, another suction pipe 8 is connected in a U-shape in the preceding stage of the suction pipe 2, and its tip is formed so as to generate a vortex flow S.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fluid suction device which is installed in a sand basin or a sedimentation pit and sucks a fluid with a vortex when the fluid is sucked up.

[0002]

[Prior art]

 For example, in a sand basin, miscellaneous substances are removed through a dust remover, and sewage flows in along with suspended solids that remain, so that all of these can be pumped up and sent to the next process. Has become. Therefore, the pump is fixed on the sand basin or on the floor of the sediment basin, and the suction pipe of this pump is deeply immersed in the fluid of the sand basin and sucked up.

[0003]

[Problems to be solved by the device]

 By the way, in the conventional suction method, a straight suction pipe is used to open a suction port with a round hole to suck up the waste water, but it sucks up sewage, but it floats up quickly and tends to float (scum). It was not possible to effectively suck it by pulling it down even in most cases, and in most cases, the scum stayed in a solidified state in the sand basin. The present invention has been made to solve the above problems, and an object of the present invention is to provide a fluid suction device that also effectively takes up suspended matter and sucks it up.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the device according to claim 1 causes a swirl flow in the fluid before it is introduced into the suction pipe communicating with the fluid pump, and also introduces suspended matter accompanying the fluid into the suction pipe. In the fluid suction device, the lower portion of the suction pipe has a spiral shape, and a part thereof in the circumferential direction is opened as a suction port. According to a second aspect of the present invention, there is provided a fluid suction device in which a vortex flow is generated in a fluid before being introduced into a suction pipe communicating with a fluid pump so that suspended matter accompanying the fluid is also introduced into the suction pipe. A spiral guide is provided around the outside of the suction pipe, and a part of the guide in the circumferential direction opens as a suction port, and the suction port communicates with the suction pipe. According to a third aspect of the present invention, there is provided a fluid suction device in which a swirl flow is generated in a fluid before being introduced into a suction pipe communicating with a fluid pump so that suspended matter accompanying the fluid is also introduced into the suction pipe. Another suction pipe is connected in a U-shape at the previous stage of the suction pipe, and its tip is formed so as to generate a swirl flow.

[0005]

[Action]

 The lower part of the suction pipe has a spiral shape, and a part of it in the circumferential direction opens as a suction port. Further, a spiral guide is provided around the outer periphery of the suction pipe, and a part of the guide in the circumferential direction opens as a suction port, and the suction port communicates with the suction pipe. Further, another suction pipe is connected in a U-shape in the preceding stage of the suction pipe, and its tip is formed so as to generate a swirl flow. Since it is configured as described above, a vortex is generated in the fluid before suction, and even suspended matter can be effectively sucked. As a result, a large amount of suspended solids will not accumulate in facilities such as sand basins.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. 1 and 2 show an embodiment of the present invention. Here, 1 is a settling basin, the floor wall of which is illustrated, and a suction pipe 2 faces above the settling basin 1. A pump (not shown) installed on the floor of the sand basin or sedimentation basin is connected to the pipe 2.

Only the lower part of the suction pipe 2 is formed in a spiral shape, and a part thereof in the circumferential direction is opened to serve as an auxiliary suction port 3. The original suction port opens at the lower end of the pipe, but this suction port may be partially or entirely closed.

Sewage, which is a fluid, is sucked through the suction port 3 and is sucked up. At that time, a swirl flow S is generated, and this swirl flow S is generated around the pipe 2 at a large time, and as a result, it floats. It takes in things and sucks them in at the same time.

The suction port 3 has a narrow upper side and a wide lower opening in FIG. 1, or, conversely, a narrow lower side and a wider open upper side.

3 and 4 show another embodiment. In this embodiment, the suction pipe 2 itself is the same as above, a spiral guide 5 is fixed on the bottom wall 1 in a vertical axis shape, and an inlet 5a is formed in a part of the guide 5 in the circumferential direction. The other end of the guide 5 is fixed along the outer circumference of the pipe 2. An auxiliary suction port 6 corresponding to the end of the guide 5 is opened at the lower end of the pipe 2. The original suction port opens at the lower end of the pipe 2, but part or all of it can be closed.

Waste water, which is a fluid, flows in through the inlet 5 a, and a vortex flow flows around the pipe 2, and the waste water flows into the pipe 2 through the suction port 6. At this time, the vortex flow S is generated, so that the vortex flow is also generated around the guide 5 and the suspended matter is also sucked accordingly. The guide 5 may be provided on the outer circumference of the pipe 2.

5 and 6 show another embodiment. In this embodiment, a U-shaped auxiliary suction pipe 8 is connected to the original pipe 2, its opening is directed upward, and a throttle pipe 9 is connected to the same opening. A spiral blade 10 is attached to the inner surface.

Therefore, since a vortex flow is generated along the spiral blade 10, a vortex flow is also generated in the upstream region of the spiral wing 10, and the suspended matter is also taken in and sucked into the pipes 2, 8.

FIG. 7 shows an additional proposed example. This example is a jet type scum sucking device in which jet air 20 is blown into a pipe 21 to suck suspended matter on the water surface 22, and the device can be vertically moved by a parallel link mechanism 23 and the like. The link mechanism 23 is hung by a pulley 24 and a balancer 25 to be supported in a weightless state, and a cylinder 26 is configured to drive the device up and down. The cylinder 25 is driven by the water level sensor 27 and a pump and control valve (not shown).

The height H from the water surface 22 to the suction port of the pipe 21 is controlled to be constant with the above configuration. The air from the pipe 21 and the water containing the scum are introduced into the relay tank 28, and the air from the tank 28 is jetted to the suspended matter on the water surface 21 by the water injection 29 by the vortex midway. The suspended matter is easily taken into the pipe 21.

As shown in FIG. 7, the saucer-shaped attracting board 35 provided below the pipe 21 has a shape that attracts scum water reliably and smoothly as shown by a virtual line, that is, in the center of the cross section. It is also possible to form a projecting ridge with a semi-circular curved cross section connected from the outer diameter side toward it. 35 'is the attraction board. Further, air can be injected into the lower end of the pipe 21 through the center of the attracting plate 35 'by an air pipe 37 attached to a support frame 36 that moves up and down in synchronization with the pipe 21. A spiral 38 may be attached to the outer circumference of the pipe 21 in order to induce the attraction in a spiral shape. This can also be combined with the embodiment of FIGS. FIG. 8 shows a structure for a wide treatment pond such as a settling pond. As shown in the drawing, a plurality of devices are arranged and each air jet 20 is connected by a pipe with a valve 30 and the outlet of each pipe 21. A check valve 31 is provided on the side. As a result, the air jet 20 is sequentially operated by the operation of the check valve 31 and the sequential operation of the valve 30. The examples shown in FIGS. 7 and 8 may be combined with the embodiments shown in FIGS. 1 to 6.

[0017]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, it is possible to provide a fluid suction device that also effectively takes in and absorbs suspended matter.

[Brief description of drawings]

FIG. 1 is a front view of a fluid suction device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the device.

FIG. 3 is a front view showing another embodiment.

FIG. 4 is a cross-sectional view of the device.

FIG. 5 is a front view showing another embodiment.

FIG. 6 is a plan view of the device.

FIG. 7 is a vertical cross-sectional view showing an additional proposal example.

FIG. 8 is a vertical sectional view showing an additional example.

[Explanation of symbols]

1 ... sand basin, 2 ... suction pipe, 3 ... suction port, 5 ... guide, 8 ... suction pipe, 9 ... throttle pipe, 10 ... spiral blade.

Claims (3)

[Scope of utility model registration request] 1. A fluid suction device in which a vortex flow is generated in a fluid before being introduced into a suction pipe communicating with a fluid pump so that suspended matter accompanying the fluid is also introduced into the suction pipe. However, the fluid suction device has a spiral shape and a part of its circumferential direction is opened as a suction port. 2. A fluid suction device in which a swirl flow is generated in a fluid before being introduced into a suction pipe communicating with a fluid pump so that suspended matter accompanying the fluid is also introduced into the suction pipe. A fluid suction device in which a spiral guide is provided in the periphery, a part of the guide in the circumferential direction is opened as a suction port, and the suction port communicates with the suction pipe. 3. A fluid suction device in which a swirl flow is generated in a fluid before being introduced into a suction pipe communicating with a fluid pump so that suspended matter accompanying the fluid is also introduced into the suction pipe. A fluid suction device in which another suction pipe is connected in a U shape in a stage, and a tip of the suction pipe is formed so as to generate a vortex flow.