JPH0448124B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention can be installed in various waterways such as water intakes of rivers, lakes, dams, etc., irrigation canals, and drainage canals.
This relates to a dust remover that prevents debris such as driftwood and floating objects from flowing into waterways, and in particular, a garbage transfer device that has a rake, etc. that removes debris that is blocked from passing by a main screen (dust screen). The present invention relates to a dust remover equipped with means.

[Prior art] This type of dust remover has a main screen that prevents debris such as driftwood, floating objects, and sand from flowing into a waterway due to torrential currents during floods, and a main screen that prevents the inflow. a garbage transfer means having a rake that moves the collected garbage down between the bars constituting the main screen on the back side of the screen and scrapes it up from below on the front side of the main screen; The dust removed by the main screen is scraped up to the top of the main screen by a rake, and the dust scraped up just before or during the descent is removed from the dust remover to the outside. The garbage is dropped onto an attached belt conveyor or the like, and the belt conveyor transports the garbage to a specific location.

[Problems to be Solved by the Invention] In the above-mentioned dust remover of this type, the water flow immediately before and after the main screen and the auxiliary screen becomes slow due to the main screen and the auxiliary screen disposed below the main screen. There are some spots. When the water flow becomes slow, the sediment that has been carried by the water current settles and is deposited on the bottom of the channel. Most of this deposited earth and sand generally collects in front and behind the auxiliary screen, blocking the movement of the rake that makes up the dust transfer means and blocking the rotation of the auxiliary screen, resulting in a decline in the functionality of the dust remover. There were problems such as: Alternatively, if the power of the drive source for moving the rake is large, the load on the rake becomes large, causing problems such as damage to the mechanism.

On the other hand, the technology published in Publication of Utility Model Publication No. 10281/1973 as a technology for handling this kind of deposited earth and sand,
A technique using a sand removal device in a roller gate groove is disclosed. However, although it is relatively easy to remove a limited amount of sediment within a limited groove within a roller gate groove at one point, it requires a large amount of energy to handle the sediment that has been deposited on the channel bottom. Admittedly, it's not an easy task.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems with dust removers, it is an object of the present invention to provide a dust remover in which the functions of the rake, auxiliary screen, etc. are not deteriorated or damaged due to the accumulation of earth and sand.

[Means for Solving the Problems] A dust remover according to the present invention includes an endless conveyor having a main screen that prevents the passage of dust, and a rake that scrapes up and removes the dust whose passage is blocked by the main screen. A means of transporting garbage such as
an auxiliary screen located at the lower part of the main screen and rotating to allow movement of the garbage moving means; a water jet nozzle shared with the rotation axis of the auxiliary screen or disposed near the rotation axis; It comprises a water pipe line and a water pressure supply source for supplying water pressure to the water jet nozzle.

[Function] In the present invention, water pressure obtained from a water pressure supply source is supplied via a water pipe by a water jet nozzle that is shared with the rotation axis of the auxiliary screen or is provided near the rotation axis, By injecting a water stream from the injection port of a water jet nozzle that is installed in common with the rotation axis of the auxiliary screen, in contact with the rotation axis, or in the vicinity, energy sufficient to lift the deposited earth and sand is applied to the earth and sand. The soil that has been applied and lifted up is then carried back onto the water flow.

[Embodiment] FIG. 1 is a side cross-sectional view showing the configuration of the main parts of an embodiment of the dust remover of the present invention, and FIG. 2 is a front view showing only the entire dust remover.

In the figure, a waterway 1 is formed of concrete or the like, and a guide embankment 1b is provided immediately before the lower end of a dust remover disposed on the bottom 1a of the waterway. The waterway 1 has both side walls 1c of the width of the river.
It has a bridge 2 spanning between the bridges 2 and 2.
A belt conveyor or the like is installed to move the discharged garbage from the dust remover to another location. Note that the fall prevention plate 2a prevents dust from falling between the dust remover and the bridge 2.

Although the guide bank portion 1b is not necessarily required, it is used to prevent floating objects such as wood, dirt, etc. from colliding with and damaging the rotating auxiliary screen, its rotation shaft, injection nozzle, etc. Therefore, it is better to provide an auxiliary screen. However, the presence of the guide bank 1b reduces the water flow and becomes a factor in sedimentation, so from the viewpoint of sedimentation, it is better not to provide it. Therefore, it is preferable to determine the arrangement of the guide bank 1b depending on the conditions of the waterway in which the dust remover is installed. In this embodiment, a case will be described in which the guide embankment portion 1b is used, but the present invention is not limited to this.

The dust remover is installed on both side walls 1c of the waterway 1 and the waterway bottom 1a.
a main screen 20 attached to the main screen 20, a dust transfer means 30 for removing dust from the main screen 20, and a water jet nozzle 70.
It consists of an auxiliary screen 40 attached by a rotating shaft 41 shared with the auxiliary screen 40 and a water pressure supply source 50 that supplies water pressure to the water jet nozzle 70 through a water pipe 51.

The base portion 10 is disposed on both side walls 1c and the bottom 1a of the water channel 1, and is attached to both side walls 1c with a stopper 3.
and a frame portion 11 attached to the waterway bottom 1a;
It has a plurality of auxiliary members 12 arranged perpendicularly to the frame body part 11.

The main screen 20 includes bars 21 arranged vertically at predetermined intervals to form a lattice shape together with the auxiliary member 12. The spacing between the bars 21 is determined by the size of the garbage to be removed, and the strength of the bars 21 and the auxiliary member 12 is determined by the flow velocity of the water channel 1 and the kinetic energy of driftwood, etc.

The dust transfer means 30 transmits the rotational force of the driving electric motor 41A to the driving upper end wheel 31 of the endless conveyor 33 disposed on the upper part of the frame body part 11 via the reduction gear 42A, and An endless conveyor 33 connected to the lower end wheel 32 disposed at the lower part of the frame body part 11 is disposed so that the endless conveyor 33 descends on the back side of the main screen 20 and rises on the front side. Circulate. The endless conveyor 33 is disposed on both sides of the main screen 20 on the side of the frame body 11, and a plurality of rakes 34 are installed between them.
Preferably, the rake 34 has a comb-shaped fitting portion on which the bar 21 of the main screen 20 is guided. And the endless conveyor 33
The garbage transfer speed on both sides of the main screen 20 is the same using an endless chain conveyor or the like,
The speeds on both sides of the rake 34 are synchronized. Note that when carrying out the present invention, the endless conveyor 33 is not limited to being provided on the frame sections 11 on both sides, and depending on the width of the waterway 1, one or more endless conveyors 33 may be provided between the frame sections 11 on both sides. An endless conveyor or the like may be provided.

Next, the auxiliary screen 40 will be explained using a front view with a partial cross section of the end of the auxiliary screen shown in FIG. 3 and a sectional view of the main parts of the main screen and the auxiliary screen viewed from the side of FIG. 4.

The auxiliary screen 40 shown in the embodiment of FIG.
Auxiliary bar 42 corresponding to bar 21 on the main screen
and a rotation shaft 41 which are pivoted by the frame portion 11. The end of the rotation shaft 41 is connected to the frame portion 1
1 through a seal packing. Said coupling ring 4
3 and the rotating shaft 41, the rotary part is fixed and sealed by a plane metal ring 44 and an O-ring 45 in order to suppress wear of the rotating part and prevent water leakage. A coupling portion 5 of a water pipe 51 for supplying water at a predetermined pressure from a water pressure supply source 50 constituted by a high-pressure water pump or the like is provided on the opposite surface of the frame portion 11 to which the coupling ring 43 is attached.
1a is attached with a seal gasket interposed therebetween. Therefore, water supplied by the water pressure supply source 50 can be supplied to the inside of the rotation shaft 41 via the water pipe line 51. The rotating shaft 41 has a hollow shaft conduit 41a in which jet ports 46a and 46b are bored at appropriate intervals to form a water jet nozzle 70. The injection ports 46a and 46b of the water jet nozzle 70 are rotated around the rotation axis 41 as shown in FIG.
It is preferable to provide an injection port 46a at the front and an injection port 46b at the rear with respect to the vertical axis.

The water pressure supply source 50 is a high-pressure water pump that supplies water from the water channel 1 or water from another water source at a predetermined pressure and amount to the water jet nozzle via the water pipe 51. In the example, the water is supplied to the shaft conduit 41a of the rotating shaft 41 which is shared with the water jet nozzle 70.

Further, the dust plate 60 is used when the distance between the main screen 20 and the upper driving wheel 31 at the uppermost end of the frame portion 11 is long, and the dust plate 60 is used to collect dust removed by the main screen 20 using the rake 34. It acts as a relay during raking.

Next, a case will be described in which the guide embankment portion 1b of this embodiment is used to remove the earth and sand deposited on the attached dust remover.

The sediment A, etc. that has settled and been deposited by the guide bank 1b generally looks like the broken line in FIG. Sediment A is deposited in an area larger than the width of . The rotation shaft 41 of the auxiliary screen 40 will normally be buried in this deposited earth and sand A. In this state, main screen 2
The rake 34 that descends on the back side of the frame body 11
When changing direction at the lower end, the earth and sand A will be pushed toward the rotating shaft 41 side. However, at this point, if water at a predetermined pressure is supplied to the rotation shaft 41, that is, the water jet nozzle 70, the auxiliary screen 40 and the rake 34 will operate as shown in FIGS. 5 to 8. .

FIGS. 5 to 8 are explanatory diagrams of operating states showing the positional relationship between the auxiliary screen, the rake, and the jet ports of the water jet nozzles.

Before driving the dust transfer means 30, the high-pressure water pump of the water pressure supply source 50 is driven, and a predetermined water pressure is applied to the shaft pipe 4 of the rotation shaft 41 via the water pipe 51.
The water is supplied to a water jet nozzle 70 formed in 1a. A water jet nozzle 70 shared by the rotating shaft 41 that has a predetermined water pressure jets a water jet a from the jet port 46a against the water flow of the waterway 1, and floats the sediment deposited immediately after the guide bank 1b. increase. The earth and sand that have received energy from the water jet from the jet nozzle 46a are floated up hydrodynamically, carried by the water flow of the water channel 1, and transported to the rear of the dust remover. Similarly, the water stream b injected from the injection port 46b in the water flow direction of the waterway 1 also lifts up the sediment deposited immediately after the rotation axis 41, and the lifted earth and sand is carried on the water flow of the waterway 1. and transported to the rear of the dust remover. Before such a rake inversion state, the bar 42 of the auxiliary screen 40 is in contact with the bar 21 of the main screen 20, the injection direction of the injection port 46a is the direction furthest from the channel bottom 1a, and the injection port 46a is in the direction furthest from the channel bottom 1a.
The injection direction of 6b is the direction closest to the channel bottom 1a.

When the rake is reversed as shown in Figure 5,
The water flow in the water channel 1 is divided by the rake 34 into a water flow c on the upper end side of the rake 34 and a water flow d on the lower end side. The lower water flow d is a water flow added to the water flow b injected from the injection port 46b, and becomes a very large water flow. The rake 34 is moved in the direction of the rotation shaft 41, and the rotation shaft 41 and the rake 34
Even in the case where the water acts as if it is compressed between the rake 34 and the jet nozzle 46d, the earth and sand are lifted up by the water flow d under the rake 34 and the water flow b from the injection port 46d, carried by the water flow of the water channel 1, and transported. will be done. In this way, by the time the rake 34 is changed direction at the lower end of the frame body part 11, most of the deposited earth and sand is carried by the water flow of the water channel 1 and is carried to the rear of the dust remover.

Then, when the endless conveyor 33 constituting the garbage transfer means 30 moves and the rake 34 moves to the position shown in FIG. The shaft 41 is rotated about its axis by a distance corresponding to the variation distance of the bar 42. That is, the auxiliary screen 40 is in a dust removal and extrusion state. At this time, the injection direction of the injection port 46a approaches the channel bottom 1a, and the injection direction of the injection port 46b moves away from the direction of the channel bottom 1a. Therefore, even if there is a blind spot in the water flow jetted from the jetting port 4a and the jetting port 46b, it can be eliminated by changing the jetting direction.

Furthermore, when the endless conveyor 33 constituting the dust transfer means 30 moves and the rake 34 reaches the position shown in FIG. The angle of rotation around the axis is maximum. Therefore, the injection direction of the injection port 46a is closest to the channel bottom 1a, and the injection direction of the injection port 46b is the direction furthest from the channel bottom 1a.

As shown in FIG. 8, after the rake 34 finishes removing dust from the auxiliary screen 40, it enters the main screen dust removal state. Rake mounting base 34 of rake 34
When the bar 42 of the auxiliary screen 40 is removed from a, the bar 42 is again attached to the bar 2 of the main screen 20.
1, and the positions of the injection ports 46a and 46b of the rotating shaft 41 return to the positions shown in FIG. At this time, the injection ports 46a and 46b rotate in the opposite direction to the former.

That is, the water jet nozzle 7 shared with the rotating shaft 41
The injection port 46a and the injection port 46b of the rake 3
4, the angle of the jetted water stream changes. At this time, the garbage transfer means 30
If the generation of the water jet jetted from the water jet nozzle 70 is delayed compared to the driving of the water jet nozzle 70, the rake 34 will begin the work of removing dust from the auxiliary screen 40 before removing the earth and sand, and the load on the rake 34 will increase due to the earth and sand. However, when the water jet is first jetted from the water jet nozzle 70 to remove the earth and sand, and then the rake 34 starts the dust removal work, the earth and sand are removed from the lower part of the auxiliary screen, so a large load is placed on the rake 34. It never takes.

As described above, the rotation shaft 41 and the water jet nozzle 70
or a rotating shaft 41
In the case where one or more water jet nozzles 70 are arranged around the rotation shaft 41,
A shaft tube portion 41a whose shaft attachment portion supported by the frame portion 11 forms the water jet nozzle 70 or a rotation shaft 41
Since it supplies a water stream at a predetermined pressure to a water jet nozzle disposed around the water jet nozzle, it is necessary to seal it reliably. Moreover, the auxiliary screen 4
Since wood or other debris with large kinetic energy will flow into the space and collide with it, the mechanical strength must also be strong.

When dust or the like having a relatively large kinetic energy collides with the main screen 20 or the auxiliary screen 40, it is necessary to remove the dust as shown in FIG. It is recommended to configure

It is preferable that the water jet nozzles 71 and 72 are arranged before and after the water flow of the rotation shaft 41 independently of the rotation shaft 41 on which the auxiliary screen 40 rotates. In this case, regardless of the rotation of the auxiliary screen 40,
A water flow in a specific direction will be generated. However, since it is not necessary to connect the frame portion 11 and the water jet nozzles 71 and 72 using a rotatable pivoting means, a structure with high mechanical strength can be achieved.

In particular, since there is a possibility that wood or the like will collide with the water jet nozzle 71 in front of the rotating shaft 41,
By setting the mechanical strength of only the water jet nozzle 71 to be large, a certain amount of guide bottom 1b can be formed.
You can get the same effect as .

Further, the amount of sediment deposited in front of the rotation shaft 41 of the auxiliary screen 40 is determined by the distance from the guide bank 1b, but since this distance is usually short, the rotation shaft 41 Shared water jet nozzle 70
Although the amount of water sprayed from the base portion 10 is sufficient,
As much as possible, by reducing the accumulation of sediment behind the
In order to save electricity by reducing the amount of deposited earth and sand and increasing the time period during which the water jets are sprayed from the water jet nozzles 71 and 72, as shown in FIG. It is preferable to arrange a water jet nozzle 73 at 1a.

In this embodiment, as described above, the base portion 10
Since the soil at the rear of the channel is lifted up by the water flow of the injection nozzle 73, and further the lifted earth and sand is transported by the water flow of the channel, it is lifted up by the injection nozzle 71 on the side of the guide bank 1b. The discharged earth and sand is also floated up again by the injection nozzle 73, and the distance over which it settles to the channel bottom 1a can be increased. Therefore, it takes a long time for the sediment to reach a predetermined sedimentation height.

In the embodiments shown in FIGS. 1 to 8 above, in which the rotation shaft 41 of the auxiliary screen 40 and the water jet nozzle 70 are shared, the rotation of the auxiliary screen causes the water jet nozzle 70 to It is possible to change the angle of the water jet and eliminate blind spots. Further, although not shown, the same effect can be obtained when one or more water jet nozzles are attached to the rotating shaft 41.

As in the embodiment shown in FIG. 9, water jet nozzles 71 and 72 and a water jet nozzle 73 are arranged near the rotation axis of the auxiliary screen, independently of the rotation axis 41 of the auxiliary screen 40. In this case, unlike the former embodiment, there is no need to employ a rotating shaft attachment means at the connection between the water pipe supplying water pressure and the water jet nozzle, so the mechanical strength of the water jet nozzle is increased. be able to. In particular, in the case where the water jet nozzle 71 is disposed in front of the rotating shaft 41, by increasing its mechanical strength, it is possible to have the same effect as the guide bank part 1b, and the water jet nozzle 71 If this is used as a substitute for the guide bank 1b, the change in water flow in the waterway will be reduced, so the dust remover can be installed under more suitable conditions. As described above, when carrying out the present invention, as in the embodiment shown in FIG. If a water jet nozzle is disposed near the moving shaft 41, earth and sand near the auxiliary screen can be removed. Although not described in detail, even in the case of the embodiment shown in FIG. 9, the water jet nozzles 71 and 72 and the water jet nozzle 73 can also be rotated by external force.

In the embodiments shown in FIGS. 1 to 9, there is a main screen consisting of a plurality of bars that prevents the passage of garbage, etc., and a back side of the main screen that removes the garbage that is blocked from passing by the main screen. a trash transfer means having a rake that descends and rises on the front side; an auxiliary screen located below the main screen that rotates to allow movement of the rake; and at or near the pivot axis of the auxiliary screen. Since the water jet nozzle installed in the water jet and the water pipe line for sending the water pressure to be supplied to the jet nozzle are integrally formed by the base part, the assembled dust remover is inserted from the top of the waterway using a crane or the like. This allows installation. Therefore, parable;
The assembled dust remover can be installed even when the water channel is flowing or the water level is not lowered with the water gate closed. Further, the factory shipment unit can be a fully assembled dust remover unit, which simplifies on-site work. In addition, in the water pipe having the integral structure, both the water pipe that sends the water pressure to be supplied to the water jet nozzle and the water pressure supply source that generates a predetermined water pressure may be attached to the frame, or the water pipe that sends the water pressure may be attached to the frame body. It is also possible to arrange only one along the base portion. Alternatively, as shown in the figure, the tip of the water pipe that sends water pressure may be attached to the frame portion of the base portion. In any case, it refers to a structure that yields building blocks that do not require working within the waterway.

In each of the above embodiments, the shape of the jet nozzle is not limited to the water jet nozzle, which means that the shape of the jet nozzle does not matter much when implementing the present invention. In other words, in devices that share a rotating shaft and a water jet nozzle, if the nozzle is made to protrude for a long time, it may become curved due to external factors, so it is better not to make the nozzle protrude too long. .

Usually, the water pipe supplying water pressure is installed at one end of the water jet nozzle, but the conditions vary depending on the pressure of the water pressure supply source, the fluid resistance of the water pipe, the fluid resistance of the water jet nozzle, etc. However, if the jet pressure of the water jet from the water jet nozzle does not exceed the specified pressure, or if there is an imbalance in the jet water flow, it is recommended to install water pipes to supply water pressure to both ends of the water jet nozzle. Relatively high and balanced injection water pressure can be obtained.

[Effects of the Invention] As described above, the dust remover of the present invention includes a dust transfer means having a rake for removing dust, etc. whose passage is blocked by a main screen consisting of a plurality of bars that prevent the passage of dust, etc.; A water pipe line and a water pressure supply source are provided for supplying water pressure to the water jet nozzle located at or near the rotation axis of the auxiliary screen which is located at the bottom of the main screen and rotates to allow movement of the rake. Since the auxiliary screen and the vicinity of its rotation axis can be cleaned with water jet nozzles and the energy of jetting water with a large mass, the sedimentation of the earth and sand can cause damage to the dust transfer means and its use. The constituent rakes will not deteriorate in function or be damaged.

[Brief explanation of the drawing]

FIG. 1 is a side cross-sectional view showing the configuration of the main parts of an embodiment of the dust remover of the present invention, FIG. 2 is a front view of the entire dust remover of the present invention shown in FIG. 1, and FIG. The figure is a front view with a partial cross section of the end of the auxiliary screen;
Figure 4 is a cross-sectional view of the main parts of the main screen and auxiliary screen seen from the side, Figures 5 to 8 are operational status diagrams showing the positional relationship of the auxiliary screen, rake, and injection nozzle, and Figure 9 is the main screen. FIG. 3 is a side sectional view showing the main part configuration of another embodiment of the dust remover of the invention. In the figure, 20...main screen, 21...bar, 30...
... Garbage transfer means, 34 ... Rake, 40 ... Auxiliary screen, 41 ... Rotating shaft, 71, 72, 73
... Water jet nozzle, 50 ... Water pressure supply source, 51
...A water pipe. In addition, in the figures, the same reference numerals and symbols indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] 1. A base portion forming a frame of the dust remover, a main screen consisting of a plurality of bars that prevents the passage of dust, etc., and a main screen that removes the dust, etc. whose passage is blocked by the main screen. a garbage transfer means having a rake that descends on the back side of the screen and rises on the front side; an auxiliary screen that is located below the main screen and rotates to allow movement of the rake; and a rotation axis of the auxiliary screen. A dust remover comprising: a water jet nozzle provided in the water jet nozzle; a water pipe line for sending water pressure to the water jet nozzle; and a water pressure supply source that generates a predetermined water pressure. 2. The dust remover according to claim 1, characterized in that the rotation shaft on which the auxiliary screen is rotated and the water jet nozzle are shared. 3. The dust remover according to claim 1 or 2, characterized in that a plurality of water jet nozzles are provided substantially parallel to the rotation axis of the auxiliary screen. 4. According to any one of claims 1 to 3, the injection port of the water pressure injection nozzle is disposed at the front and the rear with respect to the vertical axis of the rotation axis. dust remover. 5. Claim 1, characterized in that the water pressure supply source and the dust transfer means operate intermittently.
The dust remover according to any one of items 4 to 4. 6 supplying water pressure from the water pressure supply source to the water pipe,
The dust remover according to any one of claims 1 to 5, characterized in that the dust transfer means is driven after the jet water flow is generated from the jet nozzle. 7. The dust remover according to any one of claims 1 to 6, wherein the water pipe for supplying the water pressure is disposed at one end of a water jet nozzle. 8. The dust remover according to any one of claims 1 to 7, characterized in that water pipes for supplying the water pressure are disposed at both ends of a water jet nozzle. 9. According to any one of claims 1 to 8, the main screen, the dust transfer means, the auxiliary screen, the water jet nozzle, and the water pipe are integrally formed in the base part. dust remover. 10. Any one of claims 1 to 9, characterized in that the main screen, the dust transfer means, the auxiliary screen, the water jet nozzle, the water pipe, and the water pressure supply source are integrally formed in the base portion. The dust remover mentioned in one.