JPS59338Y2 - Rake in screen dust remover - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a rake in a screen dust removal device that scrapes up and removes dirt caught on a dust removal screen installed in a water intake of a dam, a waterway, or the like.

Conventionally, screen dust removal devices for water intakes or waterways, etc., which are generally used, use a rake that moves up and down along the dust removal screen to scrape up the debris caught on the dust removal screen and cause it to fall onto a dust collection hopper or discharge conveyor. It is configured.

The rake is constructed by assembling abbreviated flat bars in a lattice shape when viewed from the side, and can be raised and lowered using a wire rope, an endless chino, or the like.

However, conventional rakes have a relatively difficult time catching and collecting large-sized garbage such as driftwood, and the rakes do not have very good dust removal efficiency, as some of the garbage may fall during the raking process.

This idea was made in view of the above-mentioned circumstances, and consists of a rake door that can be opened and closed at the bottom, side panels on both sides, and a packet-like structure with the bottom, top, and upstream sides formed by screen bars. Its purpose is to smoothly and efficiently pull up and remove even large-sized garbage such as driftwood.

Hereinafter, embodiments of this invention will be described in detail with reference to the drawings.

Figures 1 and 2 show a dust removal device for a dust removal screen S installed at the dam water intake. A shaped rack groove 3, a front apron 4, a garbage input chute 5 behind it, a dust collecting packet truck 6, a packet shaped rake 7 and its drive device 8, a crane 9, and an operation control room 10.
It is composed of.

The frame 3 includes front and rear lower frames 3A and 3, respectively.
It is erected so that it can run on rails 2 via wheels 11 that are pivotally supported by B, and the front side is inclined and a front apron 4 is provided between the left and right ends to about half the height from the bottom. Guide rails 12 for the rake 7 are provided on the front surface of both ends of the front apron 4 and above it.

The front apron 4 has a movable apron 4A at the top,
The lower end portion is attached to the fixed side so as to be tilted forward via a horizontal shaft 13, and fan-shaped side plates 14 are fixed to both sides of the movable apron 4A.

Further, rod ends of a drive cylinder 16 attached to the lower side of the mounting beam 15 of the drive device 8 provided at the middle stage of the frame 3 are connected to both rear surfaces of the movable apron 4A.

The garbage inputting chute 5 is provided at the rear of the movable apron 4A, and when the movable apron 4A is tilted forward, the back surface of the chute 5 is positioned on the same slope as the lower surface of the chute 5. It is configured to be a part of

Further, the dust collection packet cart 6 is made to run together with the frame 3 on a rail 17 laid between and parallel to the rails 2, and is made to run independently by uncoupling it from the frame 3. be able to.

As shown in FIGS. 3 and 4, the rake 7 includes a rake frame 18 and wheels 1 mounted on both left and right ends of the rake frame 18.
9, side plates 20 fixed to the upper side of both ends of the frame 19,
A bottom 21 consisting of a screen bar, an upper lid 22 consisting of a screen bar provided between the upper ends of the side plates 20, and an opening/closing mechanism consisting of a screen bar that is abbreviated when viewed from the side and pivoted to the front of the lower part of the side plates 20. It is configured in a packet shape from a freely movable rake door 23 and an upstream movable lid 24 consisting of a screen bar provided between the upstream end of the rake door 23 and the upper upstream end of the side plate 20.

Between the upper ends of the upstream sides of both side plates 20 is a rake upper frame 25.
Guide rails 26 and 27 are fixed to opposing downstream (rear) surfaces of the upper frame 25, and guide rollers 28 provided on both sides of the upper end of the movable lid 24 are fitted.

Further, the upper end 2OA and the lower end 20B of the side plates 20 are each expanded outward to prevent dirt from getting caught in the wheels 19, and the lower end is shaped like a rake door 23 so that it can be closed by the L-shaped rake door 23. You have to deal with it.

An arbitrary number of arms 29 are provided on the rake door 23 to protrude rearward, and both ends of a horizontal shaft 29A passing through these arms 29 are pivotally attached to both side plates 20, and links 30 and slides are attached to the tips of the arms 29 at both left and right ends. - One end of a rope 33 for raising and lowering the rake and for closing the rake is attached via the spindle 31 and the connecting fitting 32.

The slide spindle 31 is guided by a slide guide member 34 fixed to the outer surface of the side plate 20.

In addition, a bracket 35 is fixed to the center of the back (upstream side) of the rake door 23, and a rope 3 for opening the rake door is fixed to the center.
6 are connected via a damper 37.

Furthermore, the lower end of the movable lid 24 is pivotally attached to the upper end of the rake door 23 by a horizontal shaft 38, and moves between the positions indicated by the reference numeral 240 in FIG. It is said to be movable.

A comb-like scraper 39 is fixed to the lower end of the frame 18, the tip of which can fit slightly between the bars of the screen S, and is designed to remove or cut dirt between the bars of the screen S.

If there is any debris that cannot be removed or cut by this scraper 39, the rake lifting and closing operation rope 33 will loosen and a rope loosening safety device (not shown) will be activated, and the drive device 8 will stop and the rake 7 is also being forced to stop.

Both ropes 33, 36 are connected to pulleys 42, 42, which are pivotally connected to brackets L-40, 41 extending forward from the upper part of the frame 3.
43 and then wound onto the winding drums 44 and 45 of the drive device 8, and are constructed so that they can be operated independently and simultaneously linked.

Next, the operation of the rake according to this invention will be explained.

As shown in Figures 5 and 6, when removing dust from the screen S installed at the water intake of the dam, first, the rake 7 is located above the movable apron 4A at the position shown by the solid line. The rake door 23 is opened, and in this state it is lowered and passed through the front of the dam body 1 to the screen S.
The rake door opening operation rope 36 is loosened to close the rake door 23, as shown by a two-dot chain line 207.

When the rake 7 descends in front of the screen S, the garbage hanging on it is caught inside the rake 7, and
Dust stuck between the bars of the screen S is removed or cut by the scraper 39 and collected reliably.

Even large-sized debris (such as driftwood) that cannot be accommodated in the rake 7 can be reliably pulled up because part of the rake hoisting force acts as the biting force of the rake door 23.

The rake 7 that has collected the garbage in this way is moved to the sixth position by winding up the rake raising/lowering/blocking operation rope 33 again.
After rising as shown in the figure and passing the front apron 4 and the movable apron 4A, the drive cylinder 16 is operated to tilt the movable apron 4A forward, and the movable apron 4A is tilted forward.
After setting the state shown in A, the rake door opening operation rope 36
is pulled up and the rake door 23 is opened to the state shown at 307 in FIG. 6, and the garbage inside the rake 7 is discharged and dropped onto the rear surface of the movable apron 4A.

At this time, by pulling up the rope 36, the rake 7
Since the movable lid 24 moves upward as indicated by 240 in the figure,
The garbage can be easily discharged and fall smoothly and reliably, and the garbage that has fallen onto the rear surface of the movable apron 4A slides on the chute 5 and falls into the dust collection packet truck 6.

When the discharge of the garbage in the rake 7 is completed, the drive cylinder 16 is operated to return the movable apron 4A to the rear and stand it up so that the rake 7 can pass through, and then either lowers the rake 7 again or moves it to the frame 3. After moving the rake 7
can be lowered and the above-described operation can be repeated to perform dust removal work.

In the embodiment of this invention, the front apron 4 includes the movable apron 4A, but the rake 7 according to the present invention can also be used in a device that does not have a movable apron with a gentle slope of the front apron 4. can.

As mentioned above, the other surfaces of the rake according to this invention, except for the side plates 20, are made up of screen bars and are made into basket-shaped packets, so that the area for receiving pressure of flowing water can be reduced, and the load received due to the difference in water level can be reduced. It is useful and allows smooth rake raising and lowering operation, and it is reliable because it collects garbage by holding it from above, and the rake's hoisting force acts as the biting force of the rake door, so it is large enough that it cannot be stored inside the rake. Even garbage (for example, driftwood) can be picked up between the side plates 20 and the rake door 23, and since the upper and lower ends 20A and 20B of the side plates 20 are spread outward, the effect of the scraper on the running of the wheels 19 is reduced. Furthermore, the upstream side of the rake 7 is equipped with a movable lid 24 shaped like a screen bar, which is linked to the opening and closing of the rake door 23, so that the trash is compressed when discharging the trash (when the rake door opens). In addition to making it easier for debris to fall, there is also a scraper 39 at the bottom of the rake 7.
Since it is equipped with a screen S bar, it is possible to remove even the dirt that has gotten stuck between the screen S bars, and there are high expectations for its effectiveness in making dust removal work smooth, reliable, and efficient.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention: Fig. 1 is a front view of the entire dust removal device, Fig. 2 is a side view, Fig. 3 is an enlarged longitudinal sectional side view of the main part, and Fig. 4 is a front view of Fig. 3. , FIGS. 5 and 6 are side views for explaining dust removal work. D... Water intake, S... Screen, 6
...Dust collection packet trolley, 7...Rake, 18...Rake frame, 19...
Wheel, 20...Side plate, 20A, 20B...
...Top and bottom ends of side plates, 21...Bottom, 22...
・・Top lid, 23・・Rake door, 24・・・・
...Movable lid, 29...Arm, 33...
・Rope for raising and lowering the rake and operating the closing, 36...Rope for opening the rake door.

Claims (1)

[Scope of utility model registration request] A rake 7 that moves up and down along the dust removal screen S installed in the water intake waterway etc. scrapes up the garbage caught on the dust removal screen S and causes it to fall onto the dust collection packet cart 6 or the carry-out conveyor etc. In dust removal equipment,
The rake 7 is provided with a rake frame 18 with wheels 19, both side plates 20, a rake door 23 attached to the lower ends of the both side plates 20 so as to be openable and closable, the downstream side of the frame 18, the upper surface between the both side plates 20, and the upstream side. Bottom 21, upper lid 22 and upstream movable lid 24 consisting of a screen bar
The arm 29 of the rake door 23 is connected to one end of a rope 33 for lifting and closing the rake, and the back of the rake door 23 is connected to one end of a rope 36 for opening the rake door. A rake for a screen dust removal device, characterized in that the rake 36 are driven independently and interlocked, and the upper and lower ends 20A and 20B of the side plate 20 are expanded outward.