JPS6320086A - Floating scum separator - Google Patents

Abstract

PURPOSE:To efficiently separate the scum suspended in sanitary sewage fed from a raw water supply pipe into a circular stationary tank by scraping up the scum by a swiveling frame which swivels and turns and the flexible scraping vanes of a rotating body which rotates and charging the scum into a scum discharge tray. CONSTITUTION:A scum receiving tank part 6 is formed around a raw water introducing pipe 4 provided to the central part of the circular stationary tank 2. A horizontal pipe part of the raw water supply pipe 9 is connected by means of a rotary joint 8 to the pipe 4. The bottom end of the scum discharge tray 17 is positioned to face the aperture 6a of the receiving tank part 6. The flexible scraping vanes 21 which are freely bendable and slidable with the curved guide surface of a scraping guide wall 18 provided to the tray 17 are disposed in plural sheets at equal intervals circumferentially to the outside periphery of a holding cylindrical part 20 of the rotating body 19 which has the section uniform in the axial direction. The swiveling body 3 which is freely swivelable and turnable around the pipe 4 is further provided. As a result, the scum floating on the raw water along the scraping guide wall is scraped up by the rotation of the rotating body and is charged into a scum discharge path, by which the scum is separated.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention removes scum floating in wastewater! ! It
This is related to the floating scum separator.

(Prior art) Japanese Patent Publication No. 54-35348 and Japanese Patent Application Laid-open No. 54-35348 disclose devices for scraping off scum floating in sewage, etc.
There are devices disclosed in Publication No. 6-15853@, and all of these devices include a rotating body consisting of a scraping plate that has a spiral cross-sectional shape and gradually becomes smaller toward the center so that it slopes downward toward the center of rotation. The scum is collected at the tip of the raking plate at the center of the raking rotary body, and the scum is discharged from the inclined descending end.

(Problems to be Solved by the Invention) Since the rotating body is inclined downward toward the center and the spiral cross-sectional shape gradually becomes smaller toward the center, it is difficult to maintain dynamic balance around the axis, and furthermore, the center of the spiral Since the cylindrical shape collects scum, it takes a lot of effort to clean the inside, and there are problems in that the rotating body is not easy to assemble and set, and the driving force is large.

<Means for Solving the Problems> The present invention provides a rotating body having a plurality of straight blades arranged horizontally on the outer periphery of a holding cylinder portion having a uniform cross section in the axial direction, so that accurate movement can be achieved. A hakama with a small driving force that makes it easy to maintain balance.
The rotary body and scum discharge gutter are open, making cleaning easy and complete, and the number of flexible raking blades can be selected to minimize the unevenness of concentrated scum. A scum receiving tank part is formed around a raw water introduction pipe provided in the center of a circular fixed tank, and a transverse pipe part of a raw water supply pipe is connected to the raw water introduction pipe via a rotary joint;
A scum discharge gutter whose lower end faces the opening of the scum receiving tank, a scraping guide wall attached to the scum discharge gutter, and an iiJ flexible scraper that can bend and slide freely on the curved guide surface of the scraping guide wall. A rotary body having a plurality of blades arranged at equal intervals in the circumferential direction on the outer periphery of the holding cylinder part and having a uniform cross section in the axial direction, and a rotating body that can freely rotate around the raw water introduction pipe. The present invention provides a floating scum separation device.

(Function) Floating scum consisting of solids in sewage etc. sent into the circular fixed tank from the raw water supply pipe is moved by the rotating bridge,
The scum is scraped up along the curved guide surface of the scraping guide wall by the flexible scraping blades of the rotating rotary body, thrown into a scum discharge gutter, fed into a scum receiving tank, and sent to an appropriate location.

(Embodiment) To explain an embodiment of the apparatus of the present invention with reference to the drawings, the floating scum separator 1 has a circular fixed tank 2,
A revolving body 3 is provided inside.

As shown in FIGS. 1 to 3, the circular fixed tank 2 is defined by a raw water inlet pipe 4 arranged in the center and a master mold 5 standing around the raw water inlet pipe 4 to form a scum receiving tank. A scum receiving tank section 6 is formed at the bottom of the scum receiving tank section 6, and a scum removal lower is provided at the bottom of the scum receiving tank section 6.

Next, a raw water supply pipe 9 is connected to the raw water introduction pipe 4 via a rotary joint 8, and a horizontal lateral pipe portion 9a of this raw water supply pipe 9 is fixed to a frame 10. A drive wheel 12 rotated by a rotating body driving electric fi 11 provided at the end of the rotating body 3 is made to run along a guide path 13 attached to the upper edge of the circular fixed tank 2, so that the rotating body 3 can freely rotate.

The frame 10 of the rotating body 3 has an annular f! concentric with the scum receiving tank section 6 around the center. A wall portion 14 is provided, and the lower end of this annular hanging wall portion 14 is water-sealed and slidable against an annular partition wall 15 erected at the bottom of the circular fixed tank 2.
The end of the scum discharge gutter 17, one end of which is fixed to the end wall 16 of the scum receiving tank 6, faces above the opening 6a of the scum receiving tank 6,
The bottom portion 17a of the scum 4J1 outlet 117 is inclined downward toward the center of the circular fixed tank 2.

As shown in FIG. 3, the scum discharge gutter 17 is provided with a scraping guide wall 18.

1iff storage @10 is provided with one rotating body.

As shown in FIGS. 3, 4, and 5, this rotary body 19 has four flexible raking blades 21 arranged at equal intervals in the circumferential direction on the outer periphery of a hollow holding cylinder 20 with both ends closed. 21...
with the support shafts 20a, 20a at both ends attached to the frame 101.
: It is rotatably supported on the provided bearing part 22°22,
The rotating body 19 is rotatable via a belt 26 that is stretched between a pulley 23 fixed to the protruding end of one of the support shafts 20a and a pulley 25 fixed to the shaft of the rotating experience VJ electric motor 24 provided on the bridge 10. .

The curved guide surface 18a of the raking guide wall 18 has a circular arc shape centered on the axis of one of the rotating bodies, and is connected to the flexible raking blades of the rotating body 19. 21, 21... are made of a flexible material such as rubber or Teflon, and as one rotating body rotates, the flexible raking blades 21 warp their tips in the opposite direction to the rotational direction while moving along the curved guide surface 18a. Upper edge 17 of upward moving scum discharge gutter 17
As soon as it crosses point a, it jumps up and returns to its original state.

Therefore, the diameter of the circle connecting the tip edges of the flexible raking blades 21.21, 21°21 is D, and the radius of the curved guide surface 18a is R.
Then, D>2R.

In addition, the ζ frame 1o is provided with a fan-shaped plate so as to rectify the raw water spouting from the slit-shaped outlet 9b provided at the lower part of the horizontal pipe portion 9a of the raw water supply pipe 9 and allow it to fall into the raw water tank portion 2a of the circular fixed tank 2. Arc-shaped walls 28, 28, 28, 28, 28, .

Furthermore, a treated water discharge 4' is provided for discharging treated water in which scum does not float through a passage 29 formed in one stage f' in the annular hanging wall portion 14.
The G30 end is fixed, and this treated water outlet 'IJ
30 extends in the radial direction from the center of the circular fixed tank 2, and has a slit-shaped introduction hole 30a penetrating through the bottom, and the master mold 5 fixed to the circular fixed tank 2 is connected to the Jm-shaped 1 of the rotating body 3. A treated water discharge conduit 30 of the treated water tank section 31 defined by the wall section 14
There is a communicating spoon at the bottom of the treatment water tank section 31. P
A water outlet 31a is provided therethrough.

The horizontal pipe portion 9a of the raw water supply pipe 9 and the scum discharge 6 beak 17
and one rotating body are parallel to each other, and the center line in the width direction of the scum grinder 17 is located on the radius line of the circular fixed tank 2.

In this way, the revolving body 3 is provided with the raw water supply pipe 9, the scum discharge gutter 17, and the rotating body 19, and is able to freely rotate around the raw water introduction pipe 4.

Reference numeral 32 in FIG. 3 indicates the sediment 1 attached to the lower end of the rotating body 3! It is an ffi rubber plate.

Since the device of the present invention is constructed as described above, the raw water introduction pipe 4
, raw water (a) such as sewage is made to flow into the raw water tank part 2a of the circular fixed tank 2 through the raw water supply station 9, and the rotating body drive electric motor 11
When the rotating body side electrodynamic fh ItjM 24 is operated to rotate the rotating body 3 and the rotating body 19 is rotated, the scum (B) floating on the raw water (A) in the raw water tank section 2a is removed from the rotating body 19. Flexible raking blade by rotation 21, 21° 21
．． 21 along the curved guide surface 18a, the scum is eventually thrown in from the upper edge 17a of the scum discharge gutter 17, and moreover, due to the rotational movement of the revolving structure 3, the raw water H! The scum (b) floating on the j part 2a is successively scraped up as one rotating body rotates, passes through the scum discharge gutter 17, is sent to the scum receiving tank part 6, and is transferred to an appropriate location from the scum removal lower. .

Treated water without floating scum (c) is treated water discharge pipe 3
0, flows into the treated water tank section 31, and is transferred to an appropriate location through the treated water outlet 31a.

(Effects of the Invention) The present invention scrapes up scum floating on raw water along the curved guide surface of the scraping guide wall by rotating a rotating body having flexible scraping blades, and furthermore, rotates on its own axis due to the rotation of the revolving frame. The floating scum can be successively introduced into the scum discharge path and separated by the body, and the rotary body is horizontal and the structure is a simple 66mm shape, making it easy to assemble and set, clean, and maintain. , it is possible to achieve dynamic balance at a distance, and by selecting the number of flexible scraping blades depending on the scum blade, the rotational speed of the rotating body, etc., it is possible to reduce the uneven concentration of scraped scum as much as possible. .

[Brief explanation of drawings]

Fig. 1 is a 1M7 view of the main part of the device of the present invention, Fig. 2 is a sectional view taken along line I [= If in Fig. 1, and Fig. 3 is a related structure of the scum discharge gutter, the scraping guide wall, and the rotating body. 4 is an explanatory diagram of the operating state of the flexible raking blade of the rotating body,
FIG. 5 is a front view of the rotating body. 1... Floating scum separator, 2... Circular fixed tank, 3
...Swivel body, 4...Raw water introduction pipe, 6...Scum receiving tank section, 8...Rotary joint, 9...Raw water supply pipe, 9a
...Horizontal pipe part, 17... Scum discharge gutter, 18... Scraping guide wall, 19... Rotating body, 20... Holding cylinder part,
21...Flexible raking blade.

Claims (1)

[Claims] A scum receiving tank section is formed around a raw water introduction pipe provided in the center of a circular fixed tank, and a horizontal pipe section of the raw water supply pipe connected to the raw water introduction pipe via a rotary joint, and an opening of the scum receiving tank section. A scum discharge gutter whose lower end faces the mouth, a scraping guide wall attached to this scum discharge gutter, and a flexible scraping blade that can bend and slide freely on the curved guide surface of the scraping guide wall of the holding cylinder. A floating scum separator comprising a plurality of rotating bodies disposed on the outer periphery at equal intervals in the circumferential direction and having a uniform cross section in the axial direction, and a rotating body capable of rotating around the raw water introduction pipe. .