JPS5925947Y2 - Screen type dust removal device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a screen-type dust removal device, and more specifically, a screen installed in a waterway blocks floating matter in the waterway, and a rake arm scrapes up the floating matter accumulated on the screen to remove the floating matter from the waterway. This invention relates to a screen-type dust removal device for removing dust.

A conventional dust removal device of this type includes a screen that is installed vertically in a waterway to block floating objects in the waterway, a guide rail that is laid parallel to the screen, and a trolley that is movably disposed on the guide rail. There is a screen-type dust removal device that is equipped with a drive means for driving the trolley, and a rake arm that is rotatably supported at one end on the trolley and has a rake that can freely come into contact with the screen at the free end. The device uses a drive means to raise the cart along the guide rail, and with the rake of the rake arm in contact with the screen, it scrapes up floating objects blocked by the screen and removes the floating objects onto the waterway. It is supposed to be done.

However, conventional screen-type dust removal equipment has the disadvantage that the guide rail is submerged in the waterway, so floating objects may adhere to the guide rail and obstruct the running of the trolley. , since the rake arm is configured to press against the screen due to its own weight,
When a large amount of floating matter is deposited on the screen or on the bottom of the water, there is a drawback that the pushing force of the rake arm is insufficient and sufficient raking work may not be carried out.

SUMMARY OF THE INVENTION An object of the present invention is to provide a screen-type dust removal device that eliminates the drawbacks of the prior art, allows the cart to run smoothly, and ensures sufficient pressing force of the rake arm.

The present invention makes it possible to stop the cart on the waterway by extending the rake arm so that the rake is positioned below the cart, and also includes first and second levers protruding from the rake arm, respectively. Both levers are linked to the drive means of the truck to form a rake arm to forcibly generate a pressing force.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1 showing an embodiment of the present invention, a screen 2 is vertically installed in a waterway 1, and a pair of guide rails (only one shown) 3 are installed on both side walls of the waterway 1 to support the screen 2.
It is laid parallel to this at the front position.

A floor surface 4 is constructed above the waterway 1, and this floor surface 4
A pair of rails 5 are installed above in the frontage direction of the screen 2 (first
It is laid parallel to the front and back directions of the paper, directly facing the figure.

A frame 7 is mounted on the rail 5 so that the frame 7 can move freely by mounting wheels 6 thereon.

The frame 7 has a guide plate 8 on the extension line of the screen 2 and a guide rail 9 on the extension line of the guide rail 3.
are respectively disposed, and a chute 10 is disposed in contact with the upper end of the guide plate 8.

A bogie 14 is disposed on both rails 3 and 9 so as to be freely movable via wheels 16, and the bogie is driven to run along the guide rails 3 and 9 by driving means.

That is, an electric motor (not shown) is installed at the bottom of the frame 7.
A drum 11 that is rotationally driven by is horizontally mounted on a shaft,
The other end of the main rope 13, whose one end is locked to the drum 11, is wound around the main sheave 12 rotatably supported on the upper part of the frame 7, and then attached to the upper end of the truck 14 via the pin 15. It is locked.

A bracket 17 is protruded from the end surface of the truck 14 opposite to the screen 2, and the upper end of a rake arm 19 is rotatably suspended from the bracket 17 via a pin 18.

The arm 19 has a length such that its lower end is located sufficiently below the lower end of the cart 14, and a flat plate-shaped rake 2 is attached to the lower end.
0 is installed, and this rake 20 can freely abut one end surface on the upstream end surface of the screen 2.

A second lever 21 and a second lever 22 are respectively protruded from the upper end of the rake arm 19 at right angles to the arm 19.

The terminal ends of the tenth pulley 25 and the twentieth pulley 16 are respectively locked to the first and second levers 21.22 via pins 23.24, and the first and twentieth pulleys 25.26 are held in the middle. They intersect with each other and are wound from opposite directions around a movable sheave 27 disposed on the upper part of the frame 7 so as to be able to freely reciprocate in a straight line.

After passing through the movable sheave 27, the 10th pulley 25 is wound around the first intermediate sheave 28, and after passing through the movable sheave 27, the 20th pullet 26 is wound around the second intermediate sheave 29 and the third intermediate sheave 3.
The starting ends of both ropes 25 and 26 are respectively latched to the drum 11.

The movable sheave 27 is supported by the tip of a piston rod of an air cylinder 31 installed horizontally on the upper part of the frame 7 and facing in a direction perpendicular to the frontage direction of the screen 2. It is designed to be horizontally reciprocated.

Next, the operation of the screen type dust removing device according to the above configuration will be explained.

First, the frame 7 is positioned on the floor surface 4 at a position corresponding to the position on the screen 2 where floating matter has accumulated.

At this time, the truck 14 is located at the lower limit position of the guide rail 3, but since the rake arm 19 has a sufficient length,
It is stopped at a position where it will not be immersed in the water of waterway 1.

Next, when the air cylinder 31 is operated, the rotary sheave 27 supported at the tip of the piston rod moves forward, and the movable sheave 27 moves to the position shown by the solid line in FIG.

Along with this, the tenth pulley 25 is pulled upward, and the second
When the lever 26 is relaxed, the first and second levers 21.22 supported on the trolley 14 are rotated counterclockwise, and the rake arm 19 integrated with these levers 21.22 is rotated counterclockwise.
rake 2 installed at the free end also rotates counterclockwise.
0 is forced into contact with and bit into the upstream end face of the screen 2 while pushing aside the floating matter.

At this time, even if the cart 14 is stopped on the water, the rake arm 19 has a sufficient length, so the rake 20 bites into the screen 2 near the bottom of the water.

After that, the drum 11 is rotated to connect the main rope 13 to the first rope. When the 20th plate 25, 26 is hoisted up, the truck 14 rises along the guide rails 3 and 9 and stops when the rake 20 reaches the upper end of the chute 10 located at the upper end of the guide plate 8.

While the trolley 14 is rising, the first. Since the 20th-pulls 25 and 26 are wound up at the same time, the 1st... The second lever 21,22 maintains the above-mentioned relative relationship, and the rake arm 19
0 is kept pressed against the screen 2.

Therefore, the rake 20 scrapes up floating matter accumulated on the upstream end face of the screen 2 along the screen 2 and the guide plate 8 continuous thereto.

Immediately before the rake 20 reaches the upper limit stop position at the upper end of the chute 10, the wiper 32, whose upper end is rotatably supported on the frame 7, rotates while slidingly contacting the upper end of the rake 20. The floating matter is scraped into the chute 10 to remove the floating matter.

Once the floating matter has been removed, the air cylinder 31 is retracted and the movable sheave 27 is moved back to the position shown by the imaginary line in FIG.

Along with this return, the 10th pulley 25 relaxes and the 20th pulley 25 relaxes.
The lever 26 is pulled, the first and second levers 21, 22 are rotated clockwise, the rake arm 19 opens against the screen 2, and the rake 20 leaves the guide plate 8.

After that, the drum 11 is reversed, and the main rope 13,
1st. When the 20th pulley 25.26 is lowered, the trolley 1
4 goes down.

At this time, the first. Since the 20th-pull 25 and 26 are lowered at the same time, the 1st. The second levers 21 and 22, the rake arm 19 and the rake 20 maintain the above-mentioned positions.

When the truck 14 reaches the lower limit position of the guide rail 3, the lowering operation is stopped.

Thereafter, the above-described operations are repeated to remove floating objects from all over the screen 2.

According to this embodiment, even if the cart 14 is stopped on the water surface of the waterway 1, the rake 20 can be pressed against the screen 2 near the bottom of the water, so there is no need to submerge the guide rail 3 into the water.

Therefore, there are no floating objects attached to the guide rail 3, and it is possible to avoid a situation where the floating object obstructs the lifting and lowering of the cart 1.

Furthermore, the rake arm 19 is moved to the first position by the displacement of the movable sheave 27. No. 20-P25.26 The rake 20 is forcibly opened and closed due to mutual tension and relaxation, and the rake 20 is pressed against the screen 2, so even if a large amount of floating matter is accumulated on the screen 2, this will not occur. The rake 20 can be reliably caught on the screen 2 by scraping through the screen 2.

FIG. 2 shows another embodiment of the present invention, which differs from the previous embodiment in that an elastic body for overload prevention is attached to the rake arm.

That is, the rake arm 19 is divided into a first arm 19A and a second arm 19B.
By rotatably connecting the middle part of the second arm 19B to the free end of the second arm 9A with a pin 33, the middle part of the second arm 19B can be bent freely, and overload can be prevented between the upper end parts of the first arm 19A and the second arm 19B. By interposing the spring 34 as an elastic body in a stored force state, the rake 20 installed at the lower end of the second arm 19B is always urged in the direction of pressing against the screen 20. .

According to this embodiment, when a large amount of floating matter accumulates on the screen 2 and an overload is applied to the rake 20, the spring 3
4 is compressed and the rake 20 is released, absorbing the overload and preventing accidents such as cutting of the 10th plate 21 due to overload and the rake arm 19. Accidents that damage the rake 20 can be prevented.

FIG. 3 shows another embodiment of the present invention. This embodiment differs from the previous embodiment in that the pin 18 serving as the center of rotation of the rake arm 19 is located in the middle of the rake arm, and the first. The second levers 21 and 22 are provided in a protruding position above the pin 18, respectively.

According to this embodiment, the pressing force of the rake 20 can be increased by receiving the lever.

In addition, although the said Example demonstrated the case where a running frame was used, a fixed frame may be used.

Furthermore, although the explanation has been given on the case where the wiper is used to scrape off floating objects on the rake, it is also possible to curve the guide rail 9 so that the rake 20 is inclined, thereby allowing the floating objects to fall under their own weight. good.

As explained above, according to the present invention, it is not necessary to immerse the cart and the guide rail in water, so it is possible to avoid the cart from being obstructed in its running by floating objects. ．． Since the rake can be pressed against the screen by the tensile force of the 20th plate, the rake can be bitten by the screen even if a large amount of floating matter has accumulated on the screen, improving the cleaning effect. can.

[Brief explanation of the drawing]

Fig. 1 is a side view showing one embodiment of the present invention, Fig. 2 is a side view of main parts showing another embodiment of the present invention, and Fig. 3 is a main part showing another embodiment of the present invention. This is a side view of the part. 1... Waterway, 2... Screen, 3,
9... Guide rail, 7... Frame, 11... Drum, 12... Main sheave, 13... Main lobe, 14...・・・・・・
・Dolly, 19...Rake arm, 20...
...Rake, 21...No. Ruber, 22...
...2nd lever, 25...10th lever, 26.
... 20th-pu, 27... Movable sheave,
31...Air cylinder, 33...Central pin, 34...Spring.

Claims (1)

[Scope of utility model registration request] 1. A screen is installed vertically in the waterway to stop floating objects in the waterway, a guide rail is laid parallel to the screen, a trolley is installed on the guide rail so that it can run freely, and the hoist that makes the trolley run is driven. A screen-type dust removal device comprising a transport means and a rake arm rotatably supported at one end by a truck and having a rake at a free end capable of abutting on the screen, wherein the rake arm is connected to the truck by the rake. The rake arm extends so as to be located below the lower end, and a first lever and a second lever are respectively protruded from the rake arm so as to intersect with the longitudinal direction of the arm,
A first rope and a 20th rope are respectively stretched between both levers and the drum of the driving means, and the middle part of both ropes is wound around a movable sheave that is reciprocated by the driving means. Features a screen type dust removal device. 2. The screen-type dust remover according to claim 1, wherein the rake arm is formed to be foldable in the middle, and the rake of this arm is always urged by an elastic body in a direction in which it comes into contact with the screen. Device. 3. The center of rotation of the rake arm is located at the middle part in the longitudinal direction of the rake arm, and the first lever and the second lever are provided protrudingly from the opposite end of the rake. Screen-type dust removal device described in item 2.