JPS625071Y2 - - Google Patents

Description

[Detailed description of the invention] In order to remove dust mixed in the fluid, this invention places a bar screen in the flow path, and removes the dust adhering to the screen surface from the gaps between the bars of the bar screen. This invention relates to an improvement in a dust removal conveyor configured to scrape up dust with comb teeth that run while protruding from a surface and transport the dust to a disposal position at the end of a bar screen.

The most basic structure of this type of dust removal conveyor is that a pair of upper and lower sprockets is installed behind a bar screen, which is made up of a large number of bars arranged horizontally at a fixed pitch, and an endless chain is threaded around the sprockets. This endless chain is constructed by attaching comb teeth each of which protrudes onto the screen from the gaps between the bars. Dust adhering to the bar screen is scraped upward on the bar screen by the comb teeth, and further transported to a predetermined disposal position. However, with this basic dust removal conveyor configuration, the intersection angle between the comb teeth and the bar when the upper sprocket rotates and sneaks behind the bar screen suddenly becomes smaller as the comb teeth rotate. In addition, since the relative speed between the comb teeth and the bar is large, the dirt scraped up by the comb teeth gets caught between the comb teeth and each bar, causing a high load and damaging the endless chain or comb teeth. I had a problem where the car stopped running.

As a technique proposed to solve such a problem, for example, there is one described in Japanese Utility Model Publication No. 10433/1983. As shown in Figure 1 of the above-mentioned publication, the chain line of the chain running away from the upper sprocket gradually moves away from the bar screen.
In addition to the two upper and lower sprockets, an auxiliary sprocket is provided near the upper sprocket. With this configuration, the intersecting angle between the comb teeth that go behind the bar screen and each bar remains constant until the comb teeth go in completely, and the comb teeth slowly sink behind the bars. Compared to the dust removal conveyor having the basic configuration described above, it is less likely that dirt will get caught between the comb teeth and each bar.

However, even with the improvement example shown in the above publication, although it reduces the number of cases where large debris scraped up by the comb teeth gets caught between the comb teeth and the bar, it is not completely However, again,
The problem remains that small particles attached to the comb teeth are sent behind the bar screen as they are.

The present invention was devised under the above circumstances, and its purpose is to create a comb on the bar screen using comb teeth that run with each tooth protruding from the gaps between the bars of the bar screen. We have improved the dust removal conveyor that scrapes up and removes the debris that has landed on the ground, and can completely prevent debris from getting caught between the comb teeth and the bar when the comb teeth sneak behind the bar screen. At this time, it is possible to completely remove even small dust attached to the comb teeth.

In order to achieve this purpose, in this invention,
The following technical measures have been taken:

In other words, there is a bar screen made up of a plurality of bars arranged in parallel, an endless chain that is routed around a sprocket placed behind the bar screen, and an endless chain that is attached to the endless chain and that each tooth is attached to the bar screen. In the dust removal conveyor, the dust removal conveyor has comb teeth configured to run while protruding from the gaps between each bar on the screen surface, in the direction in which the upper end of the bar screen extends and in the running direction of the endless chain behind this part. The chain gradually separates from the bar screen as it runs, and behind the upper end of the bar screen is an auxiliary bar screen consisting of auxiliary bars branching off from each bar. It is that it was formed.

At the upper end of the bar screen, that is, at the part where the comb teeth go behind the bar screen, the endless chain runs while gradually separating from the bar screen, so the endless chain is driven to run in this part. Each tooth of the comb sinks slowly behind the bar screen,
Further, the angle between each tooth and each bar of the bar screen remains constant until each tooth is completely sunk. Therefore, the dust removal conveyor of the present invention basically:
When each tooth of the comb teeth crawls behind the bar screen, dirt scraped up by the comb teeth is less likely to get caught between each tooth and each bar of the bar screen. Furthermore, in the present invention, an auxiliary bar screen is provided behind the upper end of the bar screen, which is made up of auxiliary bars branching off from each bar, so that each tooth of the comb teeth corresponds to each bar of the original bar screen. It sinks behind the bar screen through two gaps between each auxiliary bar of the auxiliary bar screen. At this time, small particles attached to each tooth of the comb teeth are completely removed by being pulled out twice by each bar of the original bar screen and each bar of the auxiliary bar screen. .

For this reason, the comb protrudes from behind the bar screen onto the bar screen, scrapes up the debris on the bar screen, transports this debris to a disposal position, and then sinks behind the bar screen, repeating a cyclical action. Since the dust adhering to the teeth is almost completely removed with each rotation, each tooth of the comb teeth is always kept free from dust. Inconveniences such as those caused by increasing the running resistance of the comb teeth do not occur, and the performance of the dust removal conveyor can be maintained constant for a long period of time.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

Reference numeral 1 in the figure denotes a bar screen disposed in the flow path for adhering dirt and debris in the fluid, and is composed of a large number of bars 2 arranged horizontally at a constant pitch. In the example shown in FIG. 1, the bar screen 1 includes a diagonal scraping part 3, a dust transfer part 5 extending substantially horizontally from the upper end of this part via an arcuate bent part 4, and further It has a tip garbage disposal section 7 extending substantially downward from the rear end of this section via an arc-shaped bent section 6, and is branched from the proximal end of the scraping section 3 and the tip garbage disposal section 7. , at the tip of the auxiliary bar screen 8, which will be detailed later.
It is supported against the machine frame 9.

Further, behind the bar screen 1, an endless chain 10 is disposed that runs while maintaining a substantially parallel relationship with the bar screen 1, and this endless chain 10 has a large number of teeth 11 attached to each of the bar screens. Comb teeth 12 are planted at the same pitch as the bar 2 and are installed at regular intervals, and when traveling behind the bar screen 1, each of the teeth 11 passes through the gap between the bars 1 of the bar screen 1. It is designed to protrude above the screen 1.

In order to arrange the endless chain 10 so as to run behind the bar screen 1 while maintaining a parallel relationship with the bar screen 1 as described above, it is necessary to raise the bar screen 1 as shown in FIG. Sprockets 13, 14, 15, 16 are installed behind the base of the section 3, behind each bent section 4, 6 of the bar screen 1, and behind the end of the garbage disposal section 7 so that the common tangent line of the adjacent sprockets is Each of the sprockets 13, 14, 15, 16, 17 is arranged parallel to each part of the bar screen, and auxiliary sprockets 17 are arranged as appropriate.
The endless chain 10 can be passed around. however,
In the present invention, behind the tip of the bar screen 1,
That is, in this embodiment, in order to allow the chain 10 running behind the garbage disposal section 7 to run while gradually separating from the garbage disposal section 7, only the sprocket 16 is located at a position slightly recessed from the garbage disposal section 7. It is provided.

Further, in the present invention, an auxiliary bar screen 8 consisting of auxiliary bars 18 branched from each bar 2 is provided at the tip of the bar screen 1, that is, in this example, behind the waste disposal section 7. This can be done, for example, by welding the auxiliary bar 18 to each bar 2 of the actual bar screen.
Of course, the pitch of this auxiliary bar 18 is the same as the pitch of each original bar 2. Note that in this example,
In particular, the auxiliary bar 18 is implanted with flocks so that when each tooth 11 of the comb teeth 12 passes between the auxiliary bars 18, fine dust attached to the teeth is wiped away by the flock. ing. Further, in this example, the tip of the auxiliary bar screen 8 is fixedly supported by the machine frame 9.

Next, the operation of the example shown in FIGS. 1 and 2 will be explained.

Any one of the sprockets 13, 14, 15, and 16 around which the endless chain 10 is wound serves as a driving sprocket, and during operation, the endless chain 10 runs in the direction of the arrow. The comb teeth 12 attached to this endless chain 10 connect to the sprocket 13 behind the base of the scraping part 3 of the bar screen 1.
When trying to run upward behind the bar screen 1 in parallel with the bar screen 1, each tooth 1 of the comb teeth
1 protrudes onto the bar screen 1 from the gap between each bar 2 of the bar screen 1, and then the scraping part 3
The bar screen 1 is run along the road to scrape up the dirt accumulated on the bar screen 1. Each tooth 11 moves to the dirt transfer part 5 or bending part 6 while projecting above the bar screen 1, and after passing around the bending part 6, the dirt is disposed of in a waste container 20 located below.

At the tip of the bar screen 1, that is, in the garbage disposal section 7 in this example, the chain 10 running behind it runs while gradually separating from the garbage disposal section 7, so that each of the comb teeth The teeth 11 slowly sink behind the bar screen 1 while maintaining a relatively large angle of intersection with each bar 2 of the waste section 7. Since each tooth 11 does not suddenly crawl behind the bar screen while rotating as in the conventional case, dirt attached to each tooth 11 gets caught between each tooth 11 and each bar 2. Large particles of dirt adhering to the teeth 11 are removed slowly and completely by each bar 2 without causing any stains.

Furthermore, in the present invention, an auxiliary bar screen 8 is provided behind the waste disposal section 7, and is formed by branching off auxiliary bars 18 from each bar 2 of this disposal section 7. Each tooth 11 that has sunk from the gap in the auxiliary bar screen 8
Since the dust passes through the gaps between the auxiliary bars 18, each tooth 11 of the comb teeth 12 is stripped of adhering dust by the bars 2 and 18 twice. In addition, especially in this example, since the auxiliary bar 18 is flocked, each tooth 11
is completely wiped away, even the smallest particles. As a result, each tooth 11 of each comb tooth 12 attached to the endless chain 10 at an appropriate number of intervals is cleaned of dust attached to each tooth 11 of each comb tooth 12 attached to the endless chain 10 every time when it sinks from the tip of the bar screen 1 to the back thereof. Inconveniences such as a decrease in the ability to scrape up dirt due to accumulation of dirt and an increase in running resistance while protruding onto the bar screen 1 are avoided.

It goes without saying that the scope of the present invention is not limited to the above example.

That is, in the example shown in FIG. 1, the tip of the bar screen 1 is the garbage disposal section 7 that extends downward, and the present invention is applied to this section, but as shown in FIG. The present invention may be applied to the end portion of the garbage transfer portion extending in the shape of a shape.
In the example shown in FIG. 1, the tip of the auxiliary bar screen 8 is supported by the machine frame 9, but the tip of the bar screen 1 itself is supported by the machine frame 9, and the tip of the auxiliary bar screen 8 is supported by the machine frame 9. It may be in an open shape. Further, in the illustrated example, the auxiliary bar 18 is implanted with hair, but the scope of the present invention also includes a case where the auxiliary bar 18 is a simple bar.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a schematic side view, FIG. 2 is a view in the direction of arrow A of what is shown in FIG. 1, and FIG. 3 is a diagram showing another embodiment of the present invention. FIG. 1... Bar screen, 2... Bar, 7...
(Tip of bar screen) Garbage disposal section, 8...
Auxiliary bar screen, 10... Endless chain, 1
1... (comb teeth) teeth, 12... comb teeth, 13,1
4, 15, 16... Sprocket, 18... Auxiliary bar.

Claims (1)

[Scope of utility model registration request] A bar screen consisting of a plurality of bars arranged side by side, an endless chain that is routed around a sprocket arranged behind the bar screen, and a chain that is attached to the endless chain and that each tooth is attached to each of the bar screens. In a dust removal conveyor having comb teeth configured to run while protruding from gaps between bars onto the screen surface, the relationship between the direction in which the upper end of the bar screen extends and the running direction of the endless chain behind this part As the chain runs, it gradually separates from the bar screen, and an auxiliary bar screen consisting of auxiliary bars branching off from each bar is formed behind the upper end of the bar screen. Features a dust removal conveyor.