ROTARY BAR SCREEN DEVICE

Abstract

Provided is a rotary bar screen device. The device includes a driving motor, an up/down pair of driving and driven sprockets, left and right transfer chains, a plurality of screen buckets, a removal unit, and a slide plate. The driving motor is provided over a support frame, and transmits a driving force. The driving and driven sprockets are driven by the driving force. The left and right transfer chains connect the driving and driven sprockets with each other while circulatively moving. The plurality of screen buckets are provided between the left and right transfer chains. The removal unit is provided between the left and right driving sprockets. The slide plate guides the foreign materials dropping from the screen buckets.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to aid in understanding the invention and are incorporated into and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a side diagram illustrating a conventional rotary bar screen device;

FIG. 2 is a front diagram illustrating a screen bucket of a conventional rotary bar screen device;

FIG. 3 is a side diagram illustrating the screen bucket of FIG. 3;

FIG. 4 is a front diagram illustrating a rotary bar screen device with an increased effective area according to the present invention;

FIG. 5 is a side diagram illustrating the rotary bar screen device of FIG. 4;

FIG. 6 is a front diagram illustrating a screen bucket according to the present invention;

FIG. 7 is a side diagram illustrating the screen bucket of FIG. 6;

FIG. 8 is a front cross-sectional diagram illustrating a drum according to the present invention; and

FIG. 9 is an enlarged cross-sectional diagram taken along line A-A′ of FIG. 8.

Claims

1. A rotary bar screen device provided to a seawater intake port of a seawater refreshing equipment or an electricity generating equipment, and filtering foreign materials introduced together with seawater, the device comprising: a driving motor provided over a support frame, and transmitting a driving force;an up/down pair of driving and driven sprockets provided at both left and right sides of the support frame, and driven by the driving force received from the driving motor;left and right transfer chains connecting the driving and driven sprockets with each other while circulatively moving;a plurality of screen buckets provided between the left and right transfer chains, and filtering the foreign materials in the seawater and transferring the filtered foreign materials;a removal unit provided between the left and right driving sprockets, and rotating with the driving sprocket at the same time and pushing the foreign materials out of the screen bucket; anda slide plate for guiding the foreign materials dropping from the screen buckets.

2. The device of claim 1, wherein an inclination guide is provided between the transfer chain and the slide plate so that the screen bucket can easily drop the foreign materials as inclining when moving down.

3. The device according to claim 1, wherein the screen bucket comprises: upper and lower plates each bent upward at their front ends;a side plate covering both side surfaces of the upper and lower plates; anda plurality of bar blocks provided in through-holes between the upper and lower plates.

4. The device according to claim 1, wherein a seal plate is provided between the transfer chain and the screen bucket to prevent passage of the foreign materials.

5. The device according to claim 4, wherein the seal plate has a curve protrusion part and a concave groove part corresponding to the curve protrusion part at its upper and lower ends, respectively, to keep airtight by joint connection with another adjacent seal plate.

6. The device according to claim 1, wherein capstans connecting to a driving shaft of the driving sprockets are provided over the left and right driving sprockets, respectively, to control tensions of the transfer chains.

7. The device according to claim 1, wherein the removal unit comprises: a drum provided on the same axis as the driving sprocket;a plurality of crooked brackets radially provided around the drum; anda plurality of crooked blocks fixed at both bent ends to the crooked brackets.

8. The device according to claim 1, wherein a collection tub is provided under the slide plate to collect the foreign materials dropping from the screen bucket along the slide plate.