JPH0452262Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a device for removing screen residue of floating matter and foreign matter collected by a dust remover in sewage, rivers, etc.

[Conventional technology]

Conventional methods for removing dust from sewage and rivers, etc., involve rotating a rotating drum screen whose lower part is immersed in water across waterways in one direction to collect screen residue containing floating matter and foreign matter. The screen residue is removed from the rotating screen by a dust removal roller disposed downstream of the rotating screen, and then discharged.

[The problem that the idea aims to solve]

According to the screen residue removal method as described above, part of the dust scraped by the dust removal roller is not discharged (falls down), and the dust attached to the dust removal roller returns to the rotating screen.

For this reason, a comb-shaped scraper is inserted between the parallel plate-shaped bodies that constitute the dust removal roller to scrape off the dust.

However, since lint and hair are trapped or remain in the place where the scraper is inserted, time-consuming cleaning is required at regular intervals, and there is also the problem that the operation of the dust remover must be stopped during cleaning.

[Means to solve the problem]

In order to solve the above problems, this invention has a drum-shaped rotating screen that has multiple annular plates arranged in parallel at equal intervals, and a drum-shaped rotating screen that is placed behind the rotating screen and rotates in the same direction as the rotating screen. death,
In a dust remover comprising a dust removal roller in which plate-shaped bodies are arranged in parallel so that a portion of the periphery fits between the annular plates, water or air is used to remove deposits attached to the dust removal roller. It is constructed by providing an injection nozzle.

[Effect]

Water or air is injected from the nozzle onto the dust removal roller to remove deposits attached to the dust removal roller.

〔Example〕

In the figure, 1 is a drum-shaped screen in which a plurality of annular plates 2 are arranged in parallel at equal intervals. A support shaft 5 protruding from the center of the outer surface of both end plates 4 of the rotating screen 1 is supported by a bearing 6, and a drive chain 8 is passed over a sprocket 7 provided on the support shaft 5 to rotate it in one direction.

Reference numeral 9 denotes a plate-like body 10 which is disposed on the rear side of the rotating screen 1 (downstream side of the water channel 3), rotates in the same direction as the rotating screen 1, and has a part of its periphery fitted between the annular plates 2. This is a dust removal roller provided in parallel.

The dust removal roller 9 has both ends of the center shaft 11 supported by bearings 12, and the center shaft 11
A drive chain 14 is passed over a sprocket 13 provided at one end of the chain 1 and rotated in one direction.

While rotating the rotary screen 1 with the dust remover having the above configuration, screen residue of floating matter and foreign matter is collected, the collected screen residue is removed from the rotary screen 1 by the dust removal roller 9, and then discharged to the chute 15. .

The screen residue discharged into the chute 15 is dehydrated by passing through a dehydrator 16 comprising an upper roller and a lower roller as disclosed in Japanese Patent Publication No. 61-37033.

Furthermore, the lint, hair, and other deposits adhering to the dust removal roller 9 are removed by water or air jetted from the nozzle 17.

A large number of nozzles 17 facing the dust removal roller 9 are provided at predetermined intervals on the dust removal roller 9 and the air supply pipe 18. In the illustrated case, the pipes 18 are arranged above and below the dust removal roller 9. The arrangement position and number of nozzles are free.

〔effect〕

As described above, according to the device for removing screen residue in a dust remover according to this invention, since the deposits attached to the dust removal roller are removed by water or air jetted from the nozzle, the dust is removed by the scraper. There is no need to remove deposits from the rollers.

This eliminates the need for the labor-intensive work of stopping the operation of the dust remover and manually removing deposits such as lint and hair stuck to the scraper.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional side view of a screen residue removing device according to the invention, and FIG. 2 is a partially cutaway front view of the same. 1... Rotating screen, 2... Annular plate, 3...
Water channel, 9... Dust removal roller, 10... Plate body, 17
... Nozzle, 18 ... Pipe.

Claims (1)

[Scope of utility model registration request] A drum-shaped rotating screen in which a plurality of annular plates are arranged in parallel at equal intervals, and a drum-shaped rotating screen that is placed behind the rotating screen and rotates in the same direction as the rotating screen, and that a part of the periphery is between the annular plates. A dust remover comprising a dust removal roller in which plate-like bodies are arranged in parallel so as to fit into each other, and is characterized in that a water or air injection nozzle is provided to remove deposits adhering to the dust removal roller. A device for removing screen residue in a dust remover.