JPS587009A - Automatic-dust remover - Google Patents

Abstract

PURPOSE:To automatically control driving of a rake, by a method wherein a water turbine is rotatably mounted to a member elevating due to an increase and decrease of water amount in a tank, and the runners of the water turbine are immersed in flow water resulting to rotate from lowering of the elevating member. CONSTITUTION:When dust gathers at a screen 10, a water level at the upstream side of the screen is raised. If a difference in water level between the upstream and the downstream exceeds a fixed value, a shaft secured to a lever 88 is turned by floats 84 and 86 to open a drainage valve 89. If water in a water tank 54 decreases, the weight decreases, the water tank is raised, a water turbine 38 is lowered, it starts a dust removing work through a turn by dint of flow water, and simultaneously, water is pumped up to a tank by a pump 70. When no difference in water level is produced, a drainage valve 89 is closed, and water begins to gather in the water tank 54. If the water tank 54 is increased in weight, the water turbine 38 is raised, it stops spinning, and a dust removing work is also brought to a stop.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic dust removal device that automatically removes dust collected on a dust removal screen installed in a flow channel, and in particular, This invention relates to a device that automatically controls the rotation or stop of a water wheel, which serves as a driving source for a rake that scrapes up and removes water.

The water that flows through waterways such as irrigation canals and drainage canals contains various types of debris, which must be removed.
For this reason, a dust removal device is generally provided to block the waterway. Therefore, this type of equipment is often installed not only in the vicinity of the subcommittee but also in remote areas, operated with no human presence nearby, and once installed, it can continue to operate without interruption for many years. Since it is,
First and foremost, it must be able to operate automatically without requiring human intervention, and at the same time, it must be able to meet social demands for energy conservation, and it must also be durable and free from breakdowns. required.

The present invention was made under these circumstances, and its purpose is to provide an endless belt-shaped dust removal screen equipped with a rake that scrapes up and removes the collected dust. When the screen is driven by a girder water wheel in a waterway, the rotation or stop of the water wheel is automatically controlled by skillfully utilizing the energy of the flowing water flowing through the waterway.

Therefore, the features of the present invention are (i), one end is
A water tank is fixedly and rotatably supported on the back side of a screen that slopes upward across the flow channel, and a water tank is suspended from the other end located downstream from the one end via a pulley. (b) a water wheel attached to the elevating member, immersed in running water by lowering of the elevating member, and rotated by the flowing water; (c) a drive transmission mechanism for rotating a pair of endless chains that can be rotated along an ascending path substantially parallel to the screen by the rotation of the water turbine, and for removing dust with a rake attached to the chains; ), a drainage control mechanism that discharges the water in the water tank and raises the elevating member; (e), a water supply mechanism that drives a pump by the rotation of the water wheel and supplies water into the water tank; Hereinafter, an apparatus according to an embodiment of the present invention will be explained in more detail based on the drawings.

In FIG. 1, reference numeral 10 denotes a screen, which is disposed across the flow channel, and is inclined so as to fall down toward the downstream side as the channel bottom 12 goes upward, as shown in FIG. This screen 10Fi consists of a large number of screen pars 14 spaced apart at regular intervals, and is attached to a horizontal bar.
C is fixed to the channel wall 16. In addition, the screen 1
On the upstream side of the screen 1, there is a screen 1 at a certain interval.
A pair of endless chains 18 that can rotate along a substantially parallel water ascending path are disposed at the bottom of the water pump, and a plurality of rakes 20 supported at both ends are fixed to the endless chains 18.

That is, as shown in FIG.
A sprocket 26 is fixed to a shaft 24 which is pivotally connected to a pair of brackets 22 erected near the upper end of the channel 6, and a sprocket 80 is fixed to a shaft 28 rotatably supported near the waterway bottom 12. Appropriate tension is provided by a pair of arcuate guide plates 82 and fan-shaped guide plates 34 wrapped around the bracket 22 and fixed inside the bracket 22, and a sprocket 86 provided at an appropriate position. When the shaft 24 is driven by a water wheel 88, which will be described later, the chain 1
8 is rotated and the rake 20 is screen par 1
By moving the screen 4 upward, the garbage collected on the screen 10 is scraped up and removed from the garbage box 40.
It is caused to fall inside.

Note that since the above is a well-known configuration, further detailed explanation will be omitted.

As shown in FIG. 2, an elevating member 42 is disposed within the waterway on the downstream side of the screen 1°. The elevating member 42 & 1.1 pair of elongated mounting members 44 are combined into a frame shape, and one end thereof is rotatably supported by an intermediate shaft 46 fixed to the back side of the screen IO. . Further, one end of a lobe 48 is connected to the other end on the downstream side, and a small hole 52 is formed at the other end of the p-brake 48 via a pulley 50 fixed on the waterway by appropriate means. A water tank 54 is suspended, and as the amount of water in the water tank 54 increases or decreases, the elevating member 42 is rotated around an intermediate shaft 46 and raised and lowered.

Further, a water wheel 88 is rotatably attached to the elevating member 42, and as the elevating member 42 descends, the water wheel blades 56 of the water wheel 88 are immersed in flowing water.
is rotated by running water 0 and a sprocket 5 attached to the shaft of the water wheel 88
8 and the sprocket 60 attached to the intermediate shaft 46 are connected by a chino 62, and the chi The rake drive transmission mechanism is configured to convert the rotational force of the rake 88 into rotation of the rake 20.

Further, another sprocket 68 attached to the shaft of the water wheel 8-8 and a sprocket 71 that rotates a pump 70 (for example, a gear pump) provided at the other downstream end of the elevating member 42 are connected by a chino 72. , water wheel 8
The pump 70 is rotated by the rotation of the filter 74, and the water sucked up from the filter 74 is discharged from the water supply pipe 76, and the water pump 70 is rotated by the rotation of the water tank 64.
Water is supplied inside.

In the device of this embodiment configured as described above, the second
As shown in the figure, when the water in the water tank 52 is discharged, the water wheel 88 descends downward, and the water wheel blades 56 are immersed in flowing water, the water wheel 38 is rotated, and the rotational force is transferred to the drive transmission described above. The mechanism drives the rake 20 to start the dust removal operation.

At the same time, the water pump 7 driven by the water wheel 38
0 supplies water into the water tank 54. When the water in the water tank 54 reaches a certain amount or more, the pulley 50
The rotational moment that attempts to rotate the lifting member 42 upward (clockwise) around the intermediate shaft 46 through the lobes 48 applied to the intermediate shaft 46 is caused by the weight of the water wheel 88 and the lifting member 42 itself. Lifting member 4 centered on
This will overcome the rotational moment that tries to rotate 2 downward (counterclockwise). Then, the elevating member 42
is lifted upward as shown by the two-dot chain line, and the water turbine blade 5
It is no longer immersed in the 6Fi flowing water, and the rotation of the water wheel 88 is stopped. As a result, the dust removal action by the rake 20 is stopped, and the water tank 54 by the water pump 70 is stopped.
On the other hand, the water tank 54 supplied with water as described above will fall downward due to its own weight. The water is gradually discharged naturally, and after a certain period of time, the weight of the water tank 540 becomes lighter.
Contrary to the above, the elevating member 42 descends downward, and the water turbine blades 56
is immersed in flowing water again, the water wheel 88 is rotated, and the rake 20 starts removing dust, and the water pump 70 starts supplying water. At this time, the water tank 54 is raised to the upper position. It is being

Then, after a certain period of time has elapsed and the water tank 540 that has been supplied with water becomes heavier, the water wheel 88 is lifted upward again and its rotation is stopped in the same manner as described above, and the dust removal work and the water supply by the water pump 70 are also stopped. It is.

Dust removal work is carried out at regular intervals through repeated, painstaking operations.

That is, the pump 54 and the small hole 52 in the above configuration
The water tank 54 has a role as a timer, and the device of this embodiment can operate on a timer using only the natural energy of flowing water.In addition, the size of the small hole 52 can be changed. By adjusting the discharge speed of water in the water tank, the time interval between rotations of the water wheel 88, that is, the time interval during which dust removal work is performed, can be freely adjusted. According to this method, the dust removal device can be operated on a timer regardless of the water level difference between the upstream and downstream sides of the screen 10.

Further, in the above embodiment, instead of the timer operation, a water level difference operation may be performed in which the water level difference between the upstream side and the downstream side of the screen 10 is detected and the dust removal action is started when the water level difference is a certain level.

That is, as shown by the two-dot chain line in FIG.
Flow for detecting the water level difference between the upstream water level 80 and the downstream water level 82 of 0) 84.86 is provided, and each 70-) 84.86
A shaft is fixed to the center of a lever 88 that is rotated by the water level difference, and the rotational force generated on this shaft by the water level difference is applied to the water tank 54 instead of the small hole 52 by an appropriate mechanical means. The water is transmitted to the drain valve 89, which is opened and closed.

When dust accumulates on the screen 10, the water level on the upstream side of the screen 10 will rise, creating a water level difference with the water level on the downstream side, but if the water level difference becomes larger than a certain level, the flow) 84.86 As a result, the shaft fixed to the lever 88 is rotated, and the drain valve 89 is opened. Then, the water in the water tank 54 decreases and its weight becomes lighter, and as a result, the water tank 54 rises upward, and the water wheel 88 descends downward, rotated by the flowing water, and starts dust removal work. , water is supplied to the water tank 54 by a water pump 70. Once the dust has been removed and the water level difference between the upstream and downstream sides of the screen 10 disappears, the drain valve 8
9 is closed, and water begins to accumulate in the water tank 54. When the weight of the water tank 540 increases, the water wheel 88 rises upward as in the previous embodiment, its rotation is stopped, and the unseating operation is also stopped.

Thereafter, this operation is repeated. In this way, even in the case of water level difference operation, it is possible to operate using only the natural energy of water flow.

In addition, in order to open and close the drain valve 89, it is also possible to use electrical means based on the water level difference.

Although two or three embodiments of the present invention have been described in detail above, the present invention is not limited to these embodiments in any way, and various improvements and improvements can be made without departing from the spirit of the present invention.
It goes without saying that the present invention may be implemented in a manner without modification or the like.

As described above, according to the present invention, it is possible to automatically control the rotation and stop of the water turbine by using the energy of the water flowing in the waterway, and thereby the dust removal action of the rake driven by the water turbine can be improved. Automatic control allows the function of the waterway dust removal device to be maintained reliably.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an apparatus according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line I and -1 in FIG. 10; Screen 14 Ni Screen Par 18:
Endless chain 88:, Water wheel 42: Lifting member
50: Pulley 54: Water tank 70: Lifting pump applicant
Sasaki - part f'PJ1 figure

Claims (1)

[Scope of Claims] A screen having a screen inclined diagonally upward across a flow channel, and a rake each having both ends attached to a pair of endless chains that can rotate along a rising path substantially parallel to the screen. In a dust remover that uses the rake to scrape up and remove the dust collected by the screen, one end is fixedly and rotatably supported on the back side of the screen; A water tank is suspended from the other end located on the downstream side via a pulley, and the elevating member is rotated around the one end to be raised and lowered as the amount of water in the water tank increases or decreases; a water wheel attached to the water wheel, which is immersed in flowing water by lowering the lifting member and rotated by the flowing water; and a drive transmission mechanism for rotating the endless chain by the rotation of the water wheel and causing the rake to remove dust. , a drainage control mechanism for discharging water in the water tank and raising the elevating member; and a water supply mechanism for driving a pump by rotation of the water wheel and supplying water to the water tank. Automatic dust remover.