JPS5925045B2 - Dust removal equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dust removal device that removes dust from a bar screen installed across a waterway using a rake at the tip of a rake arm.

Conventional devices of this kind are configured such that chenos are arranged in an endless manner along the bar screen, and several rakes attached to the chenos are used to scrape up the cool air adhering to the bar screen when the rakes rise. There is.

However, such a configuration has the disadvantage that if sediment accumulates in the waterway or cool air gets caught between the rake and the bar screen, the rake may become inoperable or the rake may be damaged.

In addition, as shown in Japanese Utility Model Publication No. 52-46846, there is a device that swings the rake arm, but since this only swings, it has the disadvantage that it becomes inoperable if sediment accumulates. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a dust removal device that can settle sand at a constant load and scrape it up cleanly without stopping the device even if sand or the like is deposited.

In the present invention, a rake arm is attached to a cart that reciprocates in an elliptical orbit through two link mechanisms, one of which is composed of a single link, and both ends of which are connected to the cart and the rake arm, respectively. The other link is a link mechanism that allows the rake arm to swing even when one link is stopped, and when an overload is applied to the rake installed at the tip of the rake arm, the rake can be rotated freely. The purpose is to achieve the above object by allowing the rake arm to move up, down, or swing.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

A filter screen 1 made up of a plurality of rods arranged at predetermined intervals is provided across a waterway 2.

On the upstream side of the waterway of this bar screen 1, a frame 3 is provided on both sides of the bar screen 10, and this frame 3 includes a substantially linear guide rail 4 that runs along the bar screen 1, and an elliptical guide rail that runs along the bar screen 1. An oval rail 5 is provided.

Sprocket wheels 6.1 are rotatably supported by the frame 3 at both ends of the oval rail 5, and a master chino 8 is hung endlessly between these sprocket wheels 6.7. .

Further, the upper tin slot wheel 6 is configured as, for example, a double tin rocket wheel, and the main chain 8
The side on which the hook is not turned is a sprocket 11 fixed to the output shaft of a motor 10 via an endless transmission chain 9.
is connected to.

A drive mechanism 12 is constituted by these sprockets 6, 7, 11, main chino 8, transmission chino 9, and motor 10.

One end of a truck 14 is guided and supported within the oval rail 5 via rollers 13, and the other end of this truck 14 is guided and supported within the guide rail 4 via rollers 15.
Furthermore, this trolley 14 is connected to the master chino 8 via a connection mechanism (not shown), and is configured to reciprocate in an elliptical orbit as the chino 8 rotates.

A base end of a rake arm 190 is attached to the trolley 14 via two link mechanisms 17 and 18, and a rake 21 is attached to the tip of the rake arm 19 for scraping up the cool water 20 accumulated on the bar screen 1. It is being

One of the two link mechanisms 17 and 18, that is, the lower link mechanism 17 in the figure, is composed of one link, and one end is rotatably attached to the truck 14, the other end is rotatably attached to the rake arm 19, and the other That is, the link mechanism 18 in the upper part of the figure is composed of a link bent in a dogleg shape, and one end is rotatably attached to the truck 14, and the other end is connected to a long hole 22 provided in the link. It is rotatably and slidably attached to the rake arm 19 via.

Further, the truck 16 is provided with a pair of upper and lower stoppers 23 and 24 that limit the operating range of one of the link mechanisms 17.

In FIG. 1, the reference numeral 25 indicates a wiper provided on the frame 3 for discharging the coolant 20 placed on the rake 21 when the rake arm 19 is raised, and the reference numeral 26 indicates a wiper for discharging the coolant 20 placed on the rake 21 when the rake arm 19 is raised. This shows the sediment deposited in the area.

Next, the operation of this embodiment will be explained.

The motor 10 is driven to rotate the main chino 8 in the direction of the arrow in FIG. 1 via the sprocket wheel 11, the transmission chino 9, and the sprocket wheel 6, thereby moving the trolley 14 downward.

When the truck 14 is guided by the guide rail 4 and the oval rail 5 and descends, one link mechanism 17 is brought into contact with the lower stopper 24 due to the weight of the rake arm 190, and the upper end of the rake arm 19 is locked to the lower end of the elongated hole 22 of the other link mechanism 18.

When the cart 14 descends in this manner and reaches a relatively lower position, as shown in FIG.
If it accumulates, a load is applied to the tip of the rake 21,
Both link mechanisms 17 and 18 rotate counterclockwise about the mounting portion on the truck 14 side as a fulcrum, and respond to the load of the rake 21.

Furthermore, when the trolley 14 is moved from the lowering to the ascending side by the primary chain 8, the rake arm 19 is connected to one link mechanism 1.
The third link mechanism 11 swings in the upward direction about the attachment point of No. 7 to the truck 14, and the link mechanism 11 contacts the upper stopper 23.
In the state shown in the figure, the rake 21 can avoid the settling sand 26 without being damaged.

As the truck 14 rises from the state shown in FIG. When the truck 14 rises, the rake arm 19 moves toward the bar screen 1 side as shown in FIG. 4, and the rake 21 scrapes up the fresh air 20.

In this way, when the truck 14 reaches the top position of the elliptical track and changes its direction in the downward direction, the refreshment 20 placed on the rake 21 as it moves is discharged to the outside of the machine by the wiper 25.

Furthermore, as the cart 14 inclines steeply as it moves in the downward direction, the rake arm 19 is pulled toward the cart 14 by the action of the link mechanisms 17 and 18, moves away from the bar screen 1, and descends in this state. , the operations shown in FIG. 2 and subsequent steps are repeated again.

As described above, according to this embodiment, the trolley 14 and the rake arm 19 are connected by two link mechanisms 17 and 18, and one link mechanism 11 allows only rotational movement of the trolley 14 and the rake arm 19. Since the other link mechanism 18 connects the truck 14 and the rake arm 19 in a state that allows rotational movement and sliding movement, the rake arm 19 can move up, down, swing, or move relative to the truck 14. A combination of these movements can be performed, and even if sediment 26 is accumulated in the water channel 2, the rake 21 can move while loosening the sediment 26, so that the cooling 2
Be sure to raise 0.

Also, since its configuration is simple, it can be provided at low cost.

In addition, in implementation, the drive of the trolley 14 is not limited to the one using the chino 8, but may also be one using a rack or pinion.

Further, the elongated hole 22 of the link mechanism 18 may be provided on the rake arm 19 side, and a pin may be implanted in the link mechanism 18. Generally, the elongated hole 22 is connected on the trolley 14 side, and the rake arm 19 side is simply a rotation. A connection structure that allows only dynamic movement may be used.

Furthermore, the link mechanism 18 is not limited to a link having a long hole 22, but may be constructed of a double link in which two links are connected in a bendable manner.
9, the link mechanism 18 should be connected so that it can not only rotate, but also slide (including movement by rolling contact using rollers, etc.) or bend. It is only necessary that the rake arm 19 be able to swing even in the stopped state.

Note that since the rake is always between the frame and the bar screen, the width of the rake can be made wider than the frame width.

Therefore, in the device of the present invention, a screen can be provided across the width of the waterway, so that the screen head loss can be reduced.

As described above, according to the present invention, even if there is foreign matter on the bar screen, if the load exceeds a certain level, the rake will escape, and the motor safety device will not be activated and the equipment will stop, and even if the bar screen is contaminated with foreign matter, the rake will escape, and the motor safety device will not be activated to stop the equipment. It is possible to provide a dust removal device that can scoop up cool air.

[Brief explanation of drawings]

Fig. 1 is an overall side view showing an embodiment of the dust removal device according to the present invention, Figs. 2 to 4 show the operating state of the embodiment of Fig. 1, and Fig. 2 shows a state in which the trolley is lowered. FIG. 3 is an enlarged side view of the main part when the cart is in an inverted state, and FIG. 4 is an enlarged side view of the main part when the cart is in the raised state. 1...Bar screen, 2...Waterway,
4...Guide rail, 5...Oval rail, 12...Drive mechanism, 14...Dolly, 1
7, 18... Link mechanism, 19... Rake arm, 20... Refreshing, 21...
L/-ki, 22...-long hole, 23, 24...
...stopper, 26...sand.

Claims (1)

[Claims] 1. One end is guided by a substantially linear guide rail provided along the bar screen, and the other end is guided by an elliptical oblong rail, and the bar screen is guided along these rails by a drive mechanism. a rake arm that is connected to the cart through a two-way link mechanism and has a rake at its tip for scraping up the cool air from the bar screen; and a stopper that limits the operating range of the link mechanism, one of the two link mechanisms is composed of one link, one end of which is connected to the truck, and the other end is connected to the rake arm. 1. A dust removal device characterized in that the other of the two link mechanisms includes a link mechanism that can swing the rake arm even when one of the links is stopped. 2. In claim 1, the other link mechanism is constituted by one link, one end of which is rotatably attached to one of the truck or the rake arm, and the other end is attached to the truck or the rake arm. A dust removal device characterized in that it is rotatably and slidably attached to the other side of a rake arm.