DE3201441A1 - Screen cleaning installation with fish-protecting cleaners - Google Patents

Abstract

Fish-protecting screen cleaners for bar screens with circulating cleaning elements, with containers (2) which are fastened above the cleaning elements (1), in which a water volume (3) defined by their dimensions and having the fish (4) swimming therein is conveyed during the upward motion, and which are emptied at the top. This emptying can take place by reversing the direction of movement or by pivoting. A catch device releases the pivoting movement. <IMAGE>

Description

DESCRIPTION

The invention relates to a fish-friendly Rechenreini ger for rod rake with unilateral cleaning elements. Rake cleaners for bar rakes are known in the most diverse variants. The cleaning elements have the Task of transporting the contaminants held back by the screen grate upwards and throw it off there. The screen grate must be kept clean in order to be available not to reduce the standing flow cross-section. Since not always avoided can, together with the screenings, also fish swimming in the water in the Reach area as a screen grate and are captured there by the cleaners, it must be prevented that these fish are crushed or during the upward movement to be damaged. The trash rack cleaners built so far did not take any action on this point Consideration.

The object of the invention is to provide a fi fish-friendly To create rake cleaner, in which the fish as possible without damage from the Water removed and carried upwards.

The solution according to the invention is that above the cleaning elements Containers are attached, on which a defined by their dimensions when going up Volume of water with the fish swimming in it is conveyed, and the above emptied will. Because the fish aucii above the water level in the one with the Can float the water that is being pumped up, it is avoided that, as before, dragged along the grate or the wall above and damaged as a result will.

The emptying can be done by deflecting the direction of movement of the cleaning elements done with the containers.

In another advantageous solution, the containers are pivotable stored and can be brought into an emptying position by pivoting. The cleaners themselves can remain in their position.

The containers are expediently provided with a locking device, which is inevitably actuated at the desired pivot point and the pivoting movement releases. There is thus an unintentional emptying at a different point than the desired avoided.

In a further advantageous embodiment, the locking device triggered by a copy roller from a control cam. This facility can can also be used to pivot the container back into its original position.

Appropriately, the storage of the container is designed so that the pivoting movement due to the torque generated by its own weight and the weight of the water is performed.

Another advantageous embodiment is on the upstream holes are made in the container, so that the water flows off when the surface is surfaced and thereby pulls the fish away from the raking surface or the raking apron. aside from that is thereby prevented that the container is filled to the top, and the Fish spill over back into the endangered area of the screen grate or Get short.

In a further advantageous embodiment, the cleaners self designed as a container.

The invention will be advantageous in the following, for example on land Embodiments described with reference to the various drawings will.

Fig. 1 shows the scllrag or vertically arranged right grate (5) with the cleaning elements (1) that run parallel to it.

On them, the container (2) are attached, in which a certain be Amount of water (3) with the fish (4) contained therein is promoted upwards. Above the screen grate (5) an apron (6) can be arranged, whereby the water level (7) in the area of the screen grate (5), in the area of the apron (6) or fluctuating can be at different heights.

Fig. 2 shows the deflection of the direction of movement of the cleaning elements (1) with the attached containers (2), thereby emptying the container (2) takes place.

Fig. 3 shows an example of the pivotable connection between Cleaning elements (1) and container (2). A locking device (8) gives the pivoting movement free at a certain defined point. This release is e.g.

by a copy roller (10) that runs on a control cam (il), drawn. There are holes on the side (2a) of the container facing away from the screen grate (5) (12) through which the water can flow out. When surfacing arises thereby a flow that, from the screen grate (5) facing side (2b) of the Container (2) leads away, and thereby prevents the fish from being damaged.

The container and cleaning element can also be combined into one element will.

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Claims (8)

Trash rack cleaning system with fish-friendly cleaners CLAIMS 1) The invention relates to a fish-friendly rake cleaner for bar rakes with rotating Cleaning elements that are above the cleaning elements (1) container (2) are attached in which when going up a volume of water (3) defined by its dimensions with the floating in it Fishing (4) is encouraged, and the above are emptied. 2) rake cleaner according to claim 1 d a d u r c h g e k e n n z e i c ii n e t that emptying by deflecting the direction of movement of the cleaning elements (1) can be done with the containers (2). 3) rake cleaner according to claim 1 d a d u r c Ii g e k e n n z e i c h n e t that the container (2) are pivotably mounted and pivoted in an emptying position can be brought. 4) rake cleaner according to claim 1 - 3, d a d u r c 1z g ek e n n z e i c h n e t that the containers (2) are provided with a locking device (8), which is inevitably actuated at the desired pivot point and the pivoting movement free gives. 5) rake cleaner according to claim 1 - 4, d a d u r c h g eic c n n z e i c h n e t that the latching device (8) by a copying roller (10) of a Control cam (11) is triggered. 6) rake cleaner according to claim 1 - 5, d a d u r c h g g k e n n z e i c h n e t that the bearing (9) is designed so that the pivoting movement carried out by the torque generated by its own weight and the weight of the water will. 7) screen cleaner according to claim 1 - 6, d a d u r c h s ek e n n z e i c h e t that holes (12) are made on the upstream container wall (2a) are through which the water flows off when surfacing and thereby the fish (4) of pulls away the computing surface (5) or the computing apron (6). 8) screen cleaner according to claim 1 - 7, d a d u r c h g ek e n n z e i c ii n e t that the cleaners themselves are designed as containers.