JPS58207910A - Precipitated sand sludge scraping apparatus - Google Patents

Abstract

PURPOSE:To scrape off the sludge over the total width of a basin at once with reduced energy to attain a low water content, by connecting a screw to the lower part of an elevator downwardly suspended from a running beam in a freely swingable manner to scoop up sand sludge scraped up by the screw. CONSTITUTION:When a cylinder 30 is driven to swing a swinging frame 26 around a pin 25, screws 32, 33 supported by the horizontal frame 29 provided to the lower part of the swinging frame 26 are embedded into sand sludge in a sand precipitating basin 1 and fallen until the cylinders 36 of the screws are contacted with the surface of a densely compacted sand sludge layer. In this state, chains 7 are revolved, the screws 32, 33 are rotated along with lower chain wheels 34 and densely compacted sand sludge is scraped by the screw blades 37, 38 to scraped up to the central part of the horizontal frame 29 while the scraped-up sand sludge is scooped up by buckets 18 circulated by the chains 7. The screws 32, 33 scrape up the sludge while drawn and advanced by a running beam.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for scraping off sedimented sand and mud in a sand settling pond and transporting it out of the pond, and in particular, to a device that can scrape off deposited sand and mud in a wide area while driving and transport it out of the pond. This invention relates to a raking device.

A conventional device for transporting sedimented sand and mud that has been settled and consolidated at the bottom of a settling basin will be described. As shown in Fig. 1, a plurality of sand settling basins 1 are arranged in parallel, and a ground conveyor 2 is provided along the side edges of the sand settling basins 1, so that it can run freely along the sand settling basins 1, straddling the parallel sand settling basins 1. A running girder 3 is installed at This running girder 3 includes an on-board conveyor 4 that extends along the entire length of the running girder 3 so that one end faces the ground and the upper conveyor, and a bogie that moves reciprocally on the running girder 3 along the on-board conveyor 4. Place 5. Trolley 5
As shown in FIG. 2, an elevator tower 6 is erected, and a chain 7 with a packet is rotatably installed inside the elevator tower 6. On the side of the elevator tower 6, a discharge chute 8 that extends over the on-board conveyor 4 is fixed, and at the bottom thereof, an elevating frame 9 having an elevating device is installed so as to be able to rise and fall freely, so that the chamfer with the packet can be carried. Hang it on a shelf.

In the example cited in FIG. 3, the elevator tower 10 is placed on the trolley 5.
A chain 7 with a packet is rotatably installed inside the chain 7, and a discharge chute 8 facing above the on-board conveyor 4 is installed on the side of the chute 8, and the lower part of the chute 8 is equipped with an oscillating electric generator. A rocking frame with ll? : It is connected to A@ so that it can be bent freely, and the chain 7 with the packet is hung thereon. The structure of the lower end of the elevating frame 9 and the seven swinging frames 11 is such that a shaft 14 is supported between the bearings 13 of the left and right side frames 12 in FIGS. A wheel 16 and a rake wheel 17 are attached, and a chain 7 with a packet is hung on the chain wheel 16. When the chain wheel 16 is lowered onto the deposited sand and mud, and the chain 7 with the packet is moved along the traveling girder 3, the packets 18 scoop up the deposited sand and mud one by one from one end to the other. Supply to upper conveyor 4 and scoop I
The stirred mud is discharged from the on-board conveyor 4 to the ground conveyor 2. - When the removal of the sedimented sand and mud from the pond is completed, 7 reams 9.12 are lifted up, and the cart 5 is moved across the 7 rem 9 to the adjacent sand settling pond.
Therefore, S12 can be moved.

However, with the above-mentioned device, the width of the scooping of the deposited sand and mud during the round trip between the traveling girder is limited by the size of the packet 18, so even if the deposited layer thickness of the sand and mud is small, the width of the scooping of the deposited sand and mud during the round trip between the traveling girder and back is limited to the size of the packet 18. Em
There was a drawback that the sand did not match, and the same sand settling pond had to be traveled back and forth many times.

As a means of reducing the number of reciprocations of the running girder, as quoted in Figure 6, screw 2o, which has a water fountain hole on its shaft and symmetrical reverse blades, was designed to have a length that corresponded to Haboike's internal recommendation. It is installed vertically under the traveling girder 21 via a swing frame 22. The screw 20.20 is equipped with a sand pump 23.
A suction cover 24 communicating with the sand pump 2 is installed.
3 and suction cover 2+! : Supported on the leek moving frame 22. The sand pump 23 is connected with a seven-legged hose 25 to the place where the running girder 21 is placed.

The screw 20 is lowered onto the deposited sand and mud, water is injected by a pressure pump to remove the pressed sand and mud, and the screw 20 is driven by a hydraulic motor to collect the sand and mud in the center of the screw (center of the pond). . The sand pump 23 sucks the sand and mud collected by the screw 20 together with water and discharges it out of the pond. The suction cover 24 suppresses the dispersion of sand and mud by the fountain from the screw shaft, and also prevents the screw 20 from dispersing.
The flow is guided in the direction of the sand pump 23 near the sand pump 23 .

However, this device had a high moisture content in the sand and mud it sucked up, making it completely unsuitable for separating and recovering sand. The purpose is to provide

The purpose of this invention is to have a structure in which the lower end of the swinging frame connected to the lower part of the packet tower is coaxially supported by a chain wheel and two Suffix IJ LL, and a screw device that is driven by the rotation of the packet mounting chain is used to control the water flow. It attempts to collect sand at a high density at every full width.

The structure of this invention will be explained with reference to figures of embodiments.

FIG. 7 shows the main parts of the embodiment of the present application, and FIG. 8 shows a side view of FIG.

In Fig. wJ7, the upper ends of seven swinging frames 2-6 are connected to the lower part of the elevator tower 10 via pins 25 so as to be flexible and suspended. A guide chain wheel 27 is rotatably supported on the swinging frame 26 near its upper end, a cross beam 28 connecting the left and right main bones of the frame is fixed to the middle part of the swing frame 26, and a horizontal beam extending left and right is attached to the lower end of the swing frame 26. Fix the frame 29. Said horizontal rack 28
and a corner of the elevator tower 1o are connected to the cylinder device via 30. Below the horizontal frame 29, screw bearings 31 are provided at both ends thereof so as to protrude toward the center so as to face each other. Screws 3g, 33 have spiral blades symmetrically opposite to each other inside the opposing screw bearings 31.
A lower chain wheel 34 is arranged inside the screw 32 and the screw 33, and a chain wheel bearing 35 facing the lower chain wheel 34 is placed inside the lower chain wheel 34 and projects below the horizontal frame 29. Set up Below the horizontal frame 29 projecting left and right, a screw 32 and a lower 5fIIk wheel 34, a screw 33 and a lower chain wheel 34 are coaxially supported, and rotatably supported on a screw shelf bracket 31 and a chain wheel bearing 35, respectively. do.

A chain chain with a packet is hung on the lower chain wheel 34.

The screws 32 and 33 connect cylinders 36 having an outer diameter approximately equal to the tooth root circle of the lower chain wheel 34 coaxially with the lower chain wheel 34, and symmetrically connect each other to the outer periphery of the pair of cylinders 36. The screw blades 3 and 38 of the reverse spiral are fixed in a multi-layered manner so that the outer diameter of the screw blades 37 and 38 is approximately the same diameter as the outer locus of the packet 18 that drives around the lower chain wheel 34. At the rear edge of the horizontal frame 29 are screws 32 and 33.
A baffle plate 39 is provided that faces almost the entire rear surface of the vehicle.

The operation of each part of the above structure will be explained.

When the cylinder device 130 is operated and the swing frame 26 swings around the bin 25, the screws 32 and 33 supported by the horizontal frame 29 are further submerged in the sand and mud in the sand basin 1, and are consolidated. It descends until circle f@36 touches the top of the sandy mud layer. When the chain shaft is rotated, the screws 32, 33 are rotated together with the lower wheel 34, and the screw vanes 37.
38 scrapes the compacted sand and mud and gathers it in the center of the horizontal frame 29. The multiple screw blades 37.3B solve the problem that only leftover sand is left behind when the screws 32.33 are pulled by the running girder 3 and move forward.

The packet 18 scoops up the sedimented sand and mud stirred up by the screw blades 37 and 38.

As explained above, this invention has a 4$1 construction in which a chain wheel and a screw are connected to each side of a bearing protruding from the lower part of an elevator that is swingably suspended under a running girder. By scooping up the accumulated sand and mud, the moisture content in the sand and mud can be suppressed to within a fraction of that of conventional methods, making it possible to scrape the entire width of the pond with less energy.

[Brief explanation of the drawing]

Figure 1 is a conventional sedimentary sand and mud scraping device, Figure 2 is a packet elevator type sand and mud scraper, Figure 3 is a bucket) 91% dynamic sand and mud scraper, and Figure 4 is a packet elevator of a conventional scraper. Lower Th, 151N is the side view of Fig. 4,
FIG. 6 is a pump suction type mud lifting device, FIG. 7 is a main part of an embodiment of the present application, and FIG. 8 is a view taken along arrows 0-0 in FIG. 3: Running girder, 26: Swinging frame, 29: Horizontal frame, 32.33
: Screw, 34: Lower chain wheel, 34: Chain wheel bearing. Figure 7 Figure 2 ￥ 47 Ki 5 Figure 6 Figure 7 Figure 1 F7
, J, Ugudup c? 6
, Yu 2ta, 99 8 figures, 39. 35 Continued from page 1O Applicant: Masaki Matsunaga, 2-6-2, Otemachi, Chiyoda-ku, Tokyo, Tokyo Department of Sewerage Bureau0 Applicant: Tamotsu Iizuka, 2-6-2, Otemachi, Chiyoda-ku, Tokyo, Tokyo Department of Sewerage Inside the station

Claims (1)

[Claims] In a device for discharging sedimentary sand and mud, which is equipped with a traveling girder that spans multiple ponds, an on-board conveyor that runs along its entire length, and a packet elevator whose lower part is swingable, a swinging frame 26 is provided below the traveling girder 3 so that it can be bent freely. A lower chain wheel 34 and a screw 32 are mounted on the outside of a pair of chain wheel bearings 35 that are suspended and protrude below the swing frame 26.
．． 33 are centripetally connected, a horizontal bar 29 is projected from both sides of the lower end of the swing frame 26, and a lower chain wheel 34 and screws 32 and 33 are pivotally supported under the horizontal bar 29.