JPH0136985Y2 - - Google Patents

Description

[Detailed explanation of the invention] Industrial application field This invention is suitable for use in sand settling ponds in sewage treatment plants, etc.
They are installed in agricultural waterways or power plant intake channels, and are used to remove dust from flowing water.

Prior Art A so-called rake that lifts up and lowers the garbage that has landed on the bar screen using a rake that moves up and down, and when it reaches the garbage discharge section above the water, the garbage loaded on the rake shelf falls and is discharged. The rake-type dust removal device is disclosed in, for example, Japanese Patent Publication No. 57-29612 or Japanese Actual Publication No. 57
- This is something that the applicant had already proposed before filing this application, as in No. 43949, but in such conventional devices, after scraping up the dust with a rake, the dust is dropped from a dust discharge part above the water. I am using wipers.

However, with this kind of wiper, the wiper toe slides into contact with the rake shelf surface from the front to the tip as the rake rises, so while there is no problem with small-sized garbage, the wiper is difficult to clean with medium- and large-sized garbage. There was an inconvenience in that the user could end up climbing on top of the garbage and pushing it empty, making it impossible to push it down from the rake shelf.

Further, when the rake scoops up a larger amount of garbage than the width of the rake shelf, the obstacles on the bar screen get in the way, making it impossible to smoothly discharge and dump the garbage.

Purpose of the invention This invention eliminates these conventional drawbacks.The purpose of this invention is to eliminate the wiper, which was previously considered indispensable in a rake elevating type dust remover, and to eliminate the wiper from riding on the dust. The purpose is to completely eliminate the inconveniences and troubles that occur with the wiper method, and another purpose is to make it possible to safely and reliably tilt the rake in the dust discharge section without any hindrance even when the dust is larger than the width of the rake shelf. To provide a device capable of smoothly discharging and dumping even medium-sized and large-sized garbage.

Configuration Therefore, in this invention, the dust that has washed up on the front surface of the bar screen installed in the waterway is scooped up by a rake that can be raised and lowered, and the dust is removed by dropping it into the discharge section above the water. In the machine, the rake is arranged such that it has a rake support frame that moves up and down along the bar screen, a rake shelf that is pivotally connected to the rake support frame so as to be tiltable about a pivot, and a rake shelf that is also pivotally connected to the rake support frame. and a rake tilting lever that tilts the rake shelf board so as to push it up from below, and the swinging arm of this rake tilting lever protrudes upward, and the protruding end is installed at a position away from the top end of the apron at the top of the bar screen. This is what I did.

Embodiment Dust removers to which this invention is applied include a rack-type dust remover, a telescopic boom, or a multistage cylinder-type dust remover, and this embodiment diagram shows a rack-type dust remover.

In FIG. 1, reference numeral 1 denotes a bar screen installed in a waterway, and a rake 2 (to be described later) scrapes up debris that has washed up on the front surface of the bar screen, and carries it to the upper part of the water while draining the water.

As shown in FIG. 2, the rake 2 includes a rake support frame 3 that moves up and down along the bar screen 1, a rake shelf 5 that is pivotably pivoted about a pivot shaft 4 to the rake support frame 3, and and also rake support frame 3
A rake tilting lever 7 is pivotally mounted on a support shaft 6 to tilt the rake shelf plate 5 so as to push it up from below.

The rake support frame 3 has a pair of left and right rake arms 8.
It is attached to the lower end of the bar screen 1 so as to protrude rearward, forming an L shape, and has a guide roller 9 at its tip that rolls into contact with the bar screen 1.

The rake shelf board 5 is installed between the left and right rake support frames 3, and the bottom surface near the tip of the rake claw 5a side is pivoted to the pivot 4, so that the rake claw 5a side is tilted downward from the horizontal state with respect to the support frame 3. It is supported so that it can tilt.

In this example, the rake tilting lever 7 is formed into an L-shape, with a horizontal portion serving as a pushing arm 7a and an upwardly protruding vertical portion serving as a swinging arm 7b, each of which has a roller 10 at its tip.
11 will be provided. The roller 10 at the tip of the pushing arm 7a is brought into contact with the lower surface of the shelf at a position forward of the pivot 4 of the rake shelf 5.

The rake arm 8 is attached to a guide frame 12 and attached to an elevating body 13 that moves up and down.

The guide frame 12 is installed on a movable pedestal 14 installed above the water. The guide frame 12 is tiltably supported at its midpoint by a pivot shaft 15, and when the rake 2 engages the bar screen 1, rises, scrapes up dust, and then descends, the upper end is tilted by the operation of a tilting cylinder 23. By towing it, the rake is moved away from the bar screen 1 by tilting the pivot shaft 15 as a fulcrum.

The elevating body 13 moves up and down by being pulled by a chain 18 hooked on chain wheels 16 and 17 provided at both the upper and lower ends of the guide frame 12, and the elevating movement of the elevating body 13 causes the rake arm 8 to be moved by a rack and pinion mechanism. It moves up and down. 19 is a motor for raising and lowering it.

The reversing guide 20 is fixed using the frame 14.

Function When the rake 2 descends into the water, it moves forward and away from the bar screen 1 due to the action of the tilting cylinder 23, and when it reaches the lower limit position, it engages the bar screen and continues to raise the elevating body 13. Accompanying rake 2 rises in the water and bar screen 1
The debris that has washed up on the front of the tank is scraped up to the top of the water.

Rake 2 apron 2 from the top of the bar screen
1 and approaches the upper end, the roller 11 at the upper end of the swinging arm 7b of the rake tilting lever 7 hits the reversing guide 20. The roller 11 is a reversing guide 20
As the pushing arm 7a continues to rise, guided by the inclined portion 20a, the pushing arm 7a is rotated counterclockwise (arrow A in FIG. 2) about the support shaft 6 as a fulcrum. The rotation of this pushing arm causes the roller 10 provided at the tip to
Push up the rake shelf board 5 from below. Therefore, the rake shelf board 5 rotates clockwise (arrow B in Figure 2) about the pivot 4 as a fulcrum, tilting the shelf surface downward toward the bar screen, so the garbage loaded on the top surface slides backward. It is discharged through a falling chute 22.

Effects of the invention As mentioned above, this invention consists of a rake that moves up and down along the bar screen, a rake support frame, a rake shelf plate that is tiltably pivoted about a pivot with respect to the rake support frame, and a rake that also moves up and down along the bar screen. It consists of a rake tilting lever that is pivotally attached to the support frame and tilts the rake shelf board so as to push it up from below, and the swinging arm of this rake tilting lever is reversed at the garbage discharge part spaced from the upper end of the apron at the top of the bar screen. Since the rake shelf plate is configured to tilt by engaging with the guide, there is no need for a wiper mechanism in which the wiper slides on the rake surface as in the past, completely eliminating problems such as dirt getting on the surface. However, since the rake reversing guide is located at a distance from the garbage discharge section at the top of the apron, the reversing guide mechanism may become an obstacle even when raking up medium-sized and large-sized garbage that is larger than the rake shelf width. It has the advantage of being able to discharge and drop smoothly and reliably without any problems, and can be operated safely without any breakdowns, and is simple in structure and can be implemented at low cost.

[Brief explanation of the drawing]

Fig. 1 is a side view of the entire dust remover showing an example of the device of the present invention, Fig. 2 is an enlarged side view showing the operating state of the rake, Fig. 3 is a plan view of the rake as seen from line A-A in Fig. 2, Figure 4 is a cross-sectional view taken along line B-B in Figure 2;
The figure is a front view of the rake attachment part. 1... Bar screen, 2... Rake, 3...
Rake support frame, 4... Pivot, 5... Rake shelf board, 6
... Support shaft, 7 ... Rake tilting lever, 8 ... Rake arm, 9 ... Guide roller, 10, 11 ...
Roller, 14... Frame, 20... Reversing guide, 2
1...Apron.

Claims (1)

[Scope of utility model registration request] In this dust remover, debris that has washed up in front of a bar screen installed in a waterway is raised up and down with a rake that can be raised and lowered, and then dumped into a discharge section above the water.The rake is moved along the bar screen. A rake support frame that moves up and down, a rake shelf that is pivotally connected to the rake support frame so that it can freely tilt around a pivot, and a rake shelf that is also pivotally connected to the rake support frame so that the rake shelf can be tilted up from below. The swing arm of the rake tilting lever projects upward, and the projecting end engages with a reversing guide installed at a position spaced from the top end of the apron at the top of the bar screen. A dust discharge mechanism of a raking waterway dust remover, which is characterized by the following.