JPS5853303Y2 - Screen automatic dust removal device - Google Patents

Description

[Detailed explanation of the invention] This invention is based on a plurality of devices that scrape up and remove dust collected by bursfunones installed in waterways such as hydroelectric power plants, river intake channels, water treatment plants, and drainage fields. This invention relates to a highly efficient screen automatic dust remover that can be equipped with a rake.

Conventionally, various automatic dust removers of this type have been proposed and implemented, but most have one rake, and those with two rakes have many constituent parts.
There is a problem that manufacturing and assembling is troublesome and costs are high.

In addition, when driving the rake with a chenette, etc., the sprocket is placed above the water surface to prevent it from being submerged in the water, so the rake arm becomes long, and especially when the water is deep, the rake can remove debris. There is a problem in that it is difficult to scrape together sufficiently.

In view of the above-mentioned actual situation, the purpose of this invention is to economically obtain an automatic dust remover that is simple in structure and reliable in operation and can efficiently perform dust removal work.

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

In this specification, the upstream side will be referred to as the front side, the downstream side will be referred to as the rear side, and the waterway side wall sides will be referred to as the left and right sides accordingly.

In the drawings, a bar screen 1 is provided in an inclined manner across a waterway 2, and a front apron 3 is continuously provided above the bar screen 1 at the same inclination angle as the bar screen 1.

On the concrete floor 4 that spans the waterway 2, there is a waterway 2.
A garbage receiving/exporting conveyor 5 is provided in a direction crossing the front apron 3, and the front apron 3 is attached to the conveyor 6, and a garbage input hopper 7 is installed on the downstream side of the front apron 3.
is formed.

The left and right end portions of this front apron 3 are fixed to the front facing surfaces of a gate-shaped frame 8 erected on the left and right side walls 2A of the waterway 2.

Reference numeral 9 denotes a pair of left and right rake guides, and rake guide side plates 9A thereof are supported and mounted on both side walls 10 above the waterway 2 in parallel with the same through support members 11.

(Note that this rake guide side plate 9A may be attached to the gate-shaped frame 8.

) A guide rail 12 for guiding the rake up and a guide rail 13 for guiding the rake down are provided at the front and rear ends of the left and right opposing surfaces of the rake guide side plate 9A, and are pivotally connected to the upper and lower ends via bearings 14 and 15. At the opposite inner end of the sprocket shaft 16.17, there is a sprocket 18.19.
is wedged.

Further, a rotating shaft 22.23 is pivotally mounted on the rake guide side plate 9A via bearings 20, 21 at an equal interval above both sprocket shafts 16 and 17, and the rake upper end is attached to the opposite end of this shaft 22.23. Rotating arm 24.2 for forced guidance
5 is wedged.

The upper ends of the guide rails 12 and 13 are connected to the rotating shaft 2.
2, and each lower end is positioned slightly above the rotating shaft 23.

Furthermore, a pin receiving member 26.27 is fixed to each tip of the rotary arm 24.25, and the pin receiving member 26.27 is substantially U-shaped when viewed from the side and has an end edge widened outward. ,2
7A has the same diameter as the pitch circle of the sprockets 18 and 19.

The guide rail 13 for guiding the rake downward is parallel to the bar screen 1, but the guide rail 12 for guiding the rake upward is bent forward ( or curved).

18.19 An endless rake cannon chain 28 is wound between the sprocket shafts 16.19 and crank arms 29 of the same length at both side ends of the sprocket shaft 16.17 and rotation shaft 22.23. , 30 are wedged together, and a connecting rod 31 is connected to the free ends of both crank arms 29, 30 by pins 32, 33 so that the rotary arms 24, 25 rotate at the same speed as the sprockets 18, 19. It's being faked.

Note that the guide rails 12 and 13 are provided with notches 12A and 13A at the upper sprocket 18 so as not to interfere with the sprocket 18, and are also provided with notches 12B and 13B through which the carrying chain 28 passes. There is.

Reinforcement plates 34 and 35 are fixed to each of the cutout portions.

The upper parts of the rake arms 37 on both left and right sides of the two dust removal rakes 36 are connected to the rake/carrying chain 28 via a chain attachment 38 by a rake/chain mounting pin 39 so as not to interfere with each other. A guide roller 40 is pivotally mounted.

Further, a guide roller 42 is pivotally attached to the left and right outer sides of the upper end 37A of the rake arm 37 via a shaft 41, and a rotary arm receiving member 26, 27 is engaged with the shaft 41 between the guide roller 42 and the rake arm 37. I am made to do it.

Note that the center-to-center distance between the guide roller shaft 41 and the pin 39 is the same as that between the sprocket shaft 16.17 and the rotating shaft 22.23.
It is made equal to the distance between the axes.

Further, the sprocket shaft 16 is driven by a motor 43 via a power transmission device (not shown).

A wiper (not shown) is provided above the garbage receiving and carrying out conveyor 5 and sliding vertically in parallel with the front apron 3.

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

First, by starting the motor 43, the rake cannon 28 is driven, and the two dust removal rakes 36 are
The carrying chain 28 is moved up and down in a loop by a sprocket 18.19, and is guided by a guide rail 12.13 provided at the upper end of the rake arm 37, and is guided by a rotating arm 24.25 at the upper and lower parts. Ru.

In the state shown in FIG. 1, the lower rake 36 on one side starts swinging forward, and the other rake 36 on the upper side starts swinging backward, and the bar screen 1
The garbage scraped up along the conveyor 5 is thrown onto the conveyor 5.

That is, when the lower end of the rake 36 on the upper side passes the upper end of the front apron 3 and reaches above the conveyor 5, the receiving member 25 of the rotating arm 24 engages with the guide roller shaft 41, and in response, the sprocket 18 Since the guide roller shaft 41 is rotated at the same speed, the rake 36 is swung forward and the garbage is prevented from falling onto the conveyor 5 through the chute 7.

In this way, the guide roller 42 separated from the guide rail 12 is guided by the rotary arm 24 to the front and rear guide rails 13 for downward guidance.

On the other hand, as shown in FIG.
At the same time, the shaft 41 of the guide roller 42 engages the receiving member 27 of the rotary arm 25 and rotates it, so the lower end of the rake 36 moves forward around the pin 39. The rake 36 rotates to the open state, and then the rake 36 scrapes the garbage toward the bar screen 1 side, and the guide roller 42 is located at the lower end of the guide rail 12 for ascending guide, and the receiver is passed from the rotating arm 25. Then, scrape up the garbage along Bar Screen 1.

Then, when the lower end of the rake 36 passes the upper end of the front apron 3, the garbage is dropped onto the conveyor 5 as described above.

In this way, the two rakes 36 are operated smoothly without any interference with each other, and the dust removal work is performed efficiently.

In the embodiment of this invention, a device equipped with two rakes 36 has been described, but the number can be increased or decreased as desired.

In addition, the dust remover fixed on the waterway has been described in detail, but it can also be configured to be erected on a movable trolley and movable in the width direction of the waterway, and furthermore, the dust collector and discharge conveyor can also be mounted on the trolley. can be provided.

Since this invention is constructed as described above, the structure is simple and economical, the rake is guided reliably and smoothly, and the upper and lower parts of the guide roller are guided smoothly by the rotating arm. The rake can be swung to ensure the rake opening operation and garbage dumping operation, and the shape of the receiving member at the tip of the rotating arm provides flexibility in guiding the guide roller shaft, making it completely effortless. There are high expectations for its effectiveness as it will work and make a significant contribution to improving the efficiency of dust removal work.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, in which Fig. 1 is a central longitudinal side view, Fig. 2 is a partially omitted front view, Fig. 3 is a sectional view taken along the line III--III of Fig. 2, and Fig. FIG. 4 is a sectional view taken along the line IV--IV in FIG. 2. 1...Bar screen, 2...Waterway,
9... Rake guide, 9A... Rake guide side plate, 10... Side wall, 11...
Supporting member, 12... Guide rail for rake upward guidance, 13... Guide rail for rake downward guidance, 16.17... Sprocket shaft, 18.19
... Sprocket, 22, 23 ... Rotating shaft, 24, 25 ... Rotating arm, 26° 27
......Receiving member, 28...Endless rake.
Carrying chain, 29.30... Crank,
31... Connecting rod, 36... Rake, 37... Rake arm, 38... Attachment, 39... Rake chain mounting pin, 40...Guide roller, 41...
Guide roller shaft, 42... Guide roller.

Claims (1)

[Scope of utility model registration request] Rake guides 9 are located oppositely on both sides of the bar screen 1 above the bar screen 1 in front of the bar screen 1 to scrape up the dirt caught on the bar screen 1 installed in the waterway 2 etc. and carry it out. 1, and lifting and lowering guide rails 12 and 13 are provided on opposing surfaces except for the upper end and lower part of both side rake guide side plates 9A, and the upper part of the lifting guide rail 12 faces forward. The rake guide side plate 9A has sprockets (18, 19) rotatably attached to the lower end and upper part of the side plate 9A via sprocket shafts 16, 17, and above each sprocket shaft 16, 17. Rotating arm 2 for guiding the upper end of the rake arm at equal intervals
4.25 is pivotally mounted via the rotating shaft 22.23, and the sprocket shafts 16, 17 and the rotating shaft 22.23 are transmitted so that they rotate in tandem, and the upper and lower sprockets) 1
8.19 An endless rake/carrying chain 28 is wound between them, and the upper part of a rake arm 37 with a guide roller 42 pivotally attached to the upper end is connected to the chino 28 via an attachment 38 and a chino mounting pin 39. ,
The center of this chino mounting pin 39 and the shaft 4 of the guide roller 42
1 The distance from the center is the rotation axis 22 of the rotation arm 24.25.
．． 23 and the sprocket shaft 16.17, and at the tips of both rotating arms 24.25, there is a pin receiver which is approximately U-shaped when viewed from the side and whose edges widen outward. The members 26 and 27 are fixed and the pin receiving part center circle 26A,
27A is made to have the same diameter as the pitch circle of the sprocket 18.19, and the guide roller shaft 41 at the upper end of the rake arm 37 is passed between the ascending and descending guide rails 12 and 13 by this rotating arm 24.25. The screen consists of an automatic dust removal device.