JPS5922845B2 - Dust remover for both sand and raking - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a dust removal machine that is installed in a sewage treatment plant, etc., and is capable of scraping up sand and scraping screen residue captured by a screen, that is, removing dust, with a single device. This is what we do.

Conventionally, in a sewage treatment plant, the sludge settled in a settling pond, etc. is scraped up using a packet conveyor, etc. The screen residue captured by a screen is scraped up individually using a dust remover installed at the screen position. The drawback is that the equipment costs are high.

In view of this, the present invention solves the above-mentioned drawbacks by equipping the packet of the sand-settling and scraping machine that runs along the sand-settling basin with a rake, and by driving it in the opposite direction to that during sand-settling, it also functions as a dust remover. This was done in order to solve this problem, and it is possible to freely run back and forth on oil along a sand settling basin by installing a frame on which a packet conveyor is stretched, and one driven sprocket wheel meshing with the conveyor. The submersible sprocket wheels of the elevating frame, which can be raised and lowered at the bottom of the vertical frame suspended below the trolley, are moved along the pond bottom to adjust the lower height of the packet conveyor during sand removal and dust removal, respectively. The present invention is characterized in that it is equipped with a device and that its driving direction can be switched.

The present invention will be explained below based on illustrated embodiments.

In the figure, 1 is a settling basin, and a screen S is installed at the outflow side (or inflow side) end of the settling basin to allow sludge, etc. in the sewage flowing into the pond to settle to the bottom of the settling basin, and to remove garbage. is captured on a screen.

In the longitudinal direction of the sand settling basin 1, there is provided a sand removal and scraping machine of the present invention, which can freely run back and forth on a rail R laid parallel to the oil.

The above-mentioned sand and scraping dust remover is equipped with a rail R as shown in the drawing.
It consists of a traveling trolley 2 that travels on it and a sand settling and scraping device 3 installed on the trolley.

This traveling trolley 2 is equipped with wheels W, which are not shown in the drawings, but is driven by a drive device so that it can reciprocate in the longitudinal direction of the sand settling basin, and raking and settling sand is discharged from a screw conveyor, belt conveyor, etc. on the trolley in the lateral direction. A discharge device 4 for a sump is provided, and the sand scraped up by a sand settling device (to be described later) is dropped onto the discharge device 4 through a hopper 5 provided above the discharge device, and by the drive of the device 4. The oil is transferred to a delivery device 6 provided above the oil and along the pond.

The sand-sloughing device 3 installed on a running truck is equipped with a plurality of driven sprocket wheels 10a, 10b, 10c and two or more driving sprocket wheels 10d on a pedestal 7 installed on the truck. A submersible sprocket wheel 10e is provided at the lower end of a vertical frame 11 vertically installed below the traveling truck 2, and an endless packet conveyor 12 is stretched between the second sprocket wheels.

The position of the submersible sprocket wheel at the lower end of this vertical frame is such that when the elevating frame 17, which is movable up and down by a cylinder 9 at the lower end of the vertical frame, is in the lowered position, it is located at the bottom of the sand settling basin, and when it is in the raised position, it is located at the bottom of the settling basin. It is set so that it is located at the bottom of the pond.

The bottom of this screen installation area is located above the bottom of the settling basin.

In the figure, 13 is a chain guide of the packet conveyor, and 14 is a rake attached to each packet B of the packet conveyor.

When the dust remover constructed as described above is used to scrape up sand, the cylinder 9 is operated to lower the elevating frame to reach the upper surface of the sand, and at the same time, the packet conveyor 12 is set to the required tension. When the cylinder 8 provided on the sprocket wheel 10c is operated so that the cylinder 8 is moved in the direction of sedimentation and scraping (in the direction of the arrow A), the discharge device 4 is also driven so that the carriage 2 is run in the longitudinal direction of the pond, and the packet conveyor is The sediment is successively raked up and discharged out of the pond via a discharge device and a carry-out device.In this case, the traveling truck moves to scrape up and remove the sediment from all over the pond bottom.

If the amount of sediment is large and the sand cannot be raked up to a predetermined position in just one run, the trolley is moved back and forth two or more times while the elevating frame is lowered.

To remove dust from the screen residue, operate the submersible sprocket wheels by operating cylinders 9 and 8 to raise the elevating frame to a predetermined position, adjust the tension of the packet conveyor, and set it at the lower position of the screen. The rake is brought closer to the screen than when lifting, and after stopping with the rake in contact with the screen, it is driven in the opposite direction B to the packet conveyor during sand raking, and the screen dregs captured by the screen are raked up. The screen scum is dropped and discharged onto the screen scum discharge device 15 above the oil.

At this time, a wiper 16 is provided on a part of the elevating frame so that the wiper 16 comes into contact with the surface of the rake so that screen scum etc. adhering to the rake can be reliably removed.

According to the present invention, each packet of the packet conveyor installed on the traveling truck is equipped with a rake, and the lower end position of the packet conveyor is adjusted to the pond bottom height during sand settling and dust removal. It has advantages such as being able to perform two operations, raking up sand and removing dust from the screen, with one device by simply raising and lowering the packet conveyor and changing the drive direction of the packet conveyor, making the device simple and inexpensive.

[Brief explanation of drawings]

FIG. 1 is a side view when sand is being settled and raked, FIG. 2 is a side view when dust is being removed, and FIG. 3 is a side view of FIG. 1. S...screen, B...packet, R-rail,
DESCRIPTION OF SYMBOLS 1...Sand settling basin, 2...Traveling trolley, 3...Sand scraping device, 4...Discharge device, 5...Hopper, 6...
Carrying out device, 7... Frame, 8, 9... Cylinder, 10
a, 10b. 10c...driven sprocket wheel, 10d...
Drive sprocket wheel, 10e... Underwater sprocket wheel, 11... Vertical frame, 12... Packet conveyor, 13... Chain guide, 14...
Rake, 15...Screen scum discharge device, 16...
・Wiper, 17... Lifting frame.

Claims (1)

[Claims] 1. A traveling trolley that can freely travel back and forth on oil along a sand settling basin is equipped with a frame on which a packet conveyor is stretched, one driven sprocket wheel that meshes with the conveyor, and a vertical frame that is hung below the traveling trolley. A submersible sprocket wheel of an elevating frame provided at the lower part of the conveyor can be moved up and down, and a moving device is provided to adjust the lower height of the packet conveyor along the pond bottom during sand removal and dust removal, respectively.
A dust remover for both sand settling and scraping, characterized in that the driving direction is switchable.