JPS6321298Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a screen device for removing solid matter contained in wastewater.

A large number of bars with screens installed at intervals to remove solid matter contained in the waste water by immersing the lower half of the bar in the waste water channel, and pulleys installed above and below the bars.
Consisting of a plurality of belts placed along guide grooves provided at both ends of each bar and wrapped around pulleys, at least a plurality of grooves into which the belts fit are provided around the outer periphery of the lower pulley. A sewage treatment apparatus is known in which the lower end of the bar is engaged in each groove, and the lower end of the bar is engaged in each groove.

This device has the advantage of being able to remove water dirt and other solid matter adhering to each groove with the front edge of the lower end of the bar, but especially when the sewage liquid level is approximately equal to the top surface of the pulley, the sewage When fibers A such as hair and paper contained therein are moved downstream away from the front edge of the lower end of the bar a as shown in FIG. 6, the lower edge b of the bar becomes a guiding surface and the pulley on the rear side The fibers are guided to the belt portion on the winding side of c, and as a result, these fibers are wound around the pulley and become tangled therewith, which is disadvantageous.

The purpose of the present invention is to obtain a screen device free of such inconveniences, and the screen 2 whose lower half is immersed in the wastewater channel 1 to remove solids a contained in the wastewater is arranged at intervals. A large number of bars 5 and pulleys 3 provided above and below the bars 5,
Consisting of a plurality of belts 4 that are provided along guide grooves 5a provided at both ends of each bar 5 and wrapped around the pulleys 3, 3, each belt 4 is fitted around at least the outer periphery of the lower pulley 3. In the type in which a plurality of grooves 3a are provided and the lower end of the bar 5 is engaged in each groove 3a, the lower end 6 of the bar 5 is placed in the groove of the pulley 3 on the front side of the screen 2. It is fitted so as to approach the bottom surface 3b of 3a and move away from the bottom surface 3b on the rear side.

In the illustrated example, the bar 5 is supported by two upper and lower horizontal rods 9, 9 extending between a pair of left and right support frames 8, 8, and a V-shaped guide groove is provided at the front and rear of the bar. 5a are attached to one body, and rectifying plates 7, 7 are provided along the bar 5 from the edges of both V-shaped guide grooves 5a, and the rectifying plates 7, 7 allow the flow of wastewater. By arranging the grooves thoroughly, it is possible to prevent the flow of waste water from occurring in the guide groove 5a in the direction of removing the belt 4 from the guide groove 5a.

The screen 2 is supported by shafts on both sides of the support frames 8, 8 on a support stand 11 provided on the embankment A, and under normal conditions, the tip side is immersed in the wastewater channel 1, as shown in FIG. I did it like that. 12 is screen 2
The cover 12 is hinged at its lower end to the screen support frame 8 so that it can be removed from the front of the screen 2 as appropriate.

Reference numeral 13 indicates an electric motor supported by the support frame 8 and provided at the upper position of the screen 2. The upper pulley 3 is driven via the electric motor 13 and the belt 14, and the belt 4 is placed on the front side of the screen 2. It was arranged to move upward, that is, in the direction of scraping up the solid material a. Reference numeral 15 indicates a scraping claw provided on the surface of the belt 4 for scraping up the solid material a.

According to the present invention, the lower end 5a of the bar 5 is
The front side of the screen 2 is fitted close to the bottom surface 3b of the groove 3a of the pulley 3, and the rear side is fitted so as to move away from the bottom surface, so that the front edge of the lower end 6 is fitted into the groove 3a. It is possible to scrape out solid matter adhering to the bottom surface 3b, and the lower edge 6 is fitted so as to be separated from the bottom surface 3b on the rear surface side.
Since there is a gap between the hair and other fibers removed on the front side of the lower end 6 and the pulley 3 on the rear side of the lower end 6, the fibers, such as hair, are washed with water and held back before getting entangled with the pulley. This has the effect of eliminating as much as possible the inconvenience of being separated and entangled with the pulley 3 as in the conventional example.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one example of implementing the present invention;
The figure is a cross-sectional view taken along the line, FIG. 3 is an enlarged cross-sectional view of a part of it, and FIG. 4 is a cross-sectional view taken along the line.
FIG. 5 is a perspective view of the main part, and FIG. 6 is a diagram illustrating a conventional example. 1...Sewage channel, 2...Screen, 3...Pulley, 4...Belt, 5...Bar, 6...Lower end of the bar.

Claims (1)

[Scope of utility model registration request] A screen 2 whose lower half is immersed in a sewage waterway 1 to scrape up solid matter a contained in the sewage is equipped with a number of bars 5 installed at intervals, and pulleys 3, 3 provided above and below the screen 2. , a plurality of belts 4 are provided along the guide grooves 5a provided at both ends of each bar 5 and wrapped around the pulleys 3, 3, and each belt 4 is fitted around the outer periphery of at least the lower pulley 3. In the case where a plurality of grooves 3a are provided and the lower end of the bar 5 is engaged in each groove 3a, the lower end 6 of the bar 5 is provided.
, on the front side of the screen 2, the pulley 3
The screen device is fitted in such a way that it approaches the bottom surface 3b of the groove 3a and moves away from the bottom surface 3b on the rear side.