JPH0611805U - Sludge attracting device - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the structure of a sludge attracting device and to provide it at a low price. [Structure] A sludge trapping device provided in a sewage treatment facility having a ceiling part above the surface of the sewage flowing, wherein a monorail type guide rail is provided on the ceiling part and suspended along the guide rail. A scraping board is provided so as to reciprocate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sludge attracting device.

[0002]

[Prior art]

 For example, the final settling basin of a sewage treatment plant is equipped with a sludge drawing device that draws up accumulated sediment and brings it into the pit.

[0003]

[Problems to be solved by the device]

 In the conventional sludge scraping device, a pair of left and right guide rails is provided for one pond via the side wall of the pond, and the scraping plate reciprocates along these guide rails. The structure was complicated and expensive.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention relates to a sludge trapping device provided in a wastewater treatment flow path having a ceiling portion above the water surface where the wastewater flows, wherein a monorail type guide rail is provided in the ceiling portion. A scraping board is provided so that it can hang down along the guide rail and move back and forth.

[0005]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. 1 to 3 show an embodiment of the present invention. This embodiment is an example of the final settling basin (or the first settling basin), in which 1 is a settling basin, into which sewage flows in through an unillustrated inlet and is discharged through a drain.

The settling basin 1 has a total length of about 100 m, is provided with a bottom wall 2 and a side wall 3, and is provided with a ceiling portion 4 at an upper portion. The ceiling portion 4 is provided with a length of about 10 m in a portion excluding the opening 5 with a length of about 2 to 3 m.

The ceiling portion 4 is made of integral concrete, and a guide rail 6 is horizontally long fixed so as to pass through the opening 5 through the center of the width of the ceiling portion 4. The guide rail 6 is bolted via a plurality of mounting bodies 7.

A traveling body 10 is hung on the guide rail 6 by traveling rollers 8 ... And auxiliary rollers 9. The traveling body 10 is a U-shaped frame body, and the traveling body 10 has a hole on the bottom surface.

A gantry-shaped suspension 11 is supported on the traveling body 10 around a shaft 12, and a scraping plate 13 is attached to the lower portion of the suspension 11. A bracket 14 projects from the upper end of the hanging body 11, and is fastened to the bracket 14 by a drive rope (or chain) 16 hung between the front and rear wheels 15 and 15 of the guide rail 6.

When the rope 16 is driven in the direction of the solid line arrow in FIG. 3, the bracket 14 is pulled in the same direction, and the scraping plate 13 is in a vertical posture. This posture is obtained by hitting the traveling body 10 against the front surface of the stopper 17 extending downward from the traveling body 10. As a result, the traveling body 10 moves along the guide rail 6 by the rollers 8 and 9, and the sludge is scraped toward the pit 19 by the scraping plate 13. A motor with a speed reducer is provided on the pond, and the transmission rope (or chain) 18 drives the rope 16.

Further, when the rope 16 is driven in the direction of the imaginary line arrow in FIG. 3, the bracket 14 is pulled and the scraping plate 13 is lifted up around the shaft 12 to bring the sludge into a non-scratching state. And get a recovery exercise. In addition, 20 is a water surface.

4 to 6 show an additional embodiment, which is an example of a device that collects and removes scum floating on the water surface 21 by a one-way scum removing device 40. The scum removing device 40 is configured as follows.

As shown in FIGS. 4 and 6, 41 is a trough, and the trough 41 is a square gutter-shaped, with a lower front part and a slightly higher rear part, and a communication form at both left and right ends. A communication trough 42 is connected to each of them. Another trough (not shown) communicates with and connects to the communication trough 42.

A front portion of the trough 41 is lower than the water surface 21, a rubber seal 43 is fixed on the front portion, and a rotary shaft 44 is provided on the rubber seal 43. The rotary shaft 44 is rotatably supported by bearings 45 fixed to the left and right front surfaces of the trough 41, and a dam member 46 having an oval cross section is mounted via the rotary shaft 44 so as to be vertically swingable. Has been.

The dam member 46 is a hollow type that can float by itself, and both ends of the dam member 46 and the trough 41 are sealed with rubber seals (not shown). A special V-shaped receiving cam 47 is attached to the front portion of the dam member 46. The front end of the cam 47 faces the water surface 21 and below, and the mountain portion comes to the water surface 21 and above. The cam 47 is located only at the left end when the scum removing device 40 is viewed from the front.

On the other hand, an H-shaped guide rail 22 is fixed along the longitudinal direction on the left side of the upper surface of the pond. A sprocket 24 and a chain 25 are configured in front of and behind the guide rail 22 so as to be reciprocally driven by a drive source 23.

A traveling body 27 is provided on the guide rail 22 so as to reciprocate by a roller 26. The traveling body 27 is cantilevered from one side of the pond toward the inside of the pond, and a hinge 28 is provided at the protruding portion. A scum plate 29 is attached so as to be swingable back and forth through the hinge 28.

The scum moving plate 29 extends over the entire pond width, and a magnet 30 is provided at a desired position thereof. The magnet 30 is a fixed magnet when the scum moving plate 29 swings backward. It can be adsorbed to 31. The rearward swing is performed by the traveling body 27 traveling toward the scum removing device 40 and hitting the roller 32.

When the scum plate 29 is attracted to the fixed magnet 31 and moves backward in the direction of the anti-scum removing device 40, the scum plate 29 comes off by hitting the contact plate 33 and keeps the vertical state by its own weight. .

Further, the traveling body 27 is provided with a pressing roller 35 via a stay 34, and the roller 35 advances in the direction of the scum removing device 45 together with the traveling body 27 and rides on the cam 47 described above. , And acts to press the dam member 46 below the water surface. As a result, the scum floating on the water surface gets over the weir member 46 and is attracted into the trough 41. The scum flows in one direction of the trough 41, flows into the adjacent trough through the communication trough 42, and further flows into the terminal pit through the other trough to be eliminated.

When the pressing roller 35 retracts, the dam member 46 is lifted by its own weight, and the attraction of scum is stopped. The reciprocating motion of the chain 25 is performed by a switch 36 fixed on the side surface of the guide rail 22. Further, since the scum moving plate 29 follows the fluctuation of the water level, it has a width slightly above and below.

Further, a float may be attached to the free end of the scum shifting plate 29 to generate buoyancy.

[0023]

[Effect of device]

 The present invention is as described above, and therefore the structure of the sludge trapping device can be simplified and provided at a low cost. The sludge attracting device can be installed not only in the sedimentation basin but also in sewage or clean water pipes to the treatment plant, a sand basin in the treatment plant, a flow channel.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a sedimentation basin showing a first embodiment of the present invention.

FIG. 2 is a lateral enlarged sectional view thereof.

3 is a vertical sectional side view of FIG. 2. FIG.

FIG. 4 is a side cross-sectional view of an additional example scum removal system.

5 is a sectional view taken along line VV of FIG.

6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

 1 Sedimentation pond 4 Ceiling 6 Guide rail 13 Scraping board

Claims (1)

[Scope of utility model registration request] 1. A sludge trapping device provided in a sewage treatment facility having a ceiling portion above the surface of water through which sewage flows, wherein a monorail type guide rail is provided on the ceiling portion and suspended along the guide rail. A sludge scraping device provided with a scraping plate so as to move down and reciprocate.