JPS6349289Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a filtering device that can change the length of the screen depending on the amount of processing.

BACKGROUND ART Conventionally, a filtration device is known in which waste water is supplied to the inside of a rotating drum screen, liquid is discharged to the outside, and slag is discharged to the outside from a screw conveyor extending inside the screen.

However, in this type of filtering device, the length of the screen had to be changed depending on the amount of processing, so a great deal of labor was required to manufacture it.

This invention solves the above-mentioned drawbacks, and by constructing a rotating drum screen by connecting a unitized screen unit and a connection unit, the length of the screen can be changed according to the processing amount, and it is effective. The purpose of the present invention is to provide a filtering device that can perform processing and easily produce screens of various lengths.

An embodiment of this invention will be described below with reference to the drawings.

This invention consists of a rotating drum screen 2 disposed inside a casing 1 as shown in FIGS. 1 to 3.
, a sewage supply pipe 3 disposed within the rotating drum screen 2 , and a screw conveyor (slag discharge means) 4 disposed within the rotating drum screen 2 .

The rotating drum screen 2 is shown in FIGS. 1 to 4.
As shown in the figure, it is rotatably supported by a support roller 5, a casing 1, and a support base 6, and is rotated by a drum drive unit 7 via a gear, a chain 8, etc. This rotary drum screen 2 has bearing connection units 9 disposed at least at both ends, and the connection units 9 and the screen unit 1 are connected to each other.
It consists of a concatenated connection with 0.

As shown in FIGS. 5 and 6, the screen unit 10 is provided with a screen 10a in its body that allows only liquid to pass through, and is formed into a hollow cylindrical shape having flange portions 10b at both end openings. As shown in FIGS. 7 and 8, the connection unit 9 for the other bearing is formed so that the body is not perforated so that no liquid can pass therethrough, and flanges 9a are similarly provided at the openings at both ends. In addition, a roller guide ring 9b is provided on the outer periphery of the body, and a baffle plate 9c that projects inward is provided inside as necessary to prevent the stock solution from flowing out from both ends.

As shown in FIG.
As shown in the figure, the rotating drum screen 2 rotates in the direction of the arrow by the guide piece 3b of the upper opening 3a.
The screen 10a is configured to supply waste water at a position where the screen 10a passes the highest point and begins to descend.

As shown in FIGS. 1 to 3, the screw conveyor 4 has an opening 4a formed in the upper part,
It is driven by the screw drive unit 11 to transport the residue after overtreatment toward the residue discharge port 4b.

The sewage supply pipe 3 and the screw conveyor 4 are removably formed to have different diameters depending on the amount to be processed.

According to the above configuration, the wastewater to be treated is supplied to the rotating drum screen 2 and over-treated.
The liquid is conveyed to the screw conveyor 4 through the liquid discharge port 1a, while the solid matter is conveyed as slag to the screw conveyor 4 and discharged to the outside. Here, in particular, since the rotating drum screen 2 is constructed by connecting a unitized screen unit 10 and a connection unit 9, it is possible to connect a plurality of screen units 10 according to the throughput, for example, as shown in FIG. For example, it is possible to change the length of the screen for effective processing, and it is extremely easy to create a model that corresponds to each processing amount.
Further, the bearing connection unit 9 is non-porous, and a support part that does not allow liquid to flow out can be formed at a necessary location, so that when it is placed at both ends, corrosion of the bearing part can be prevented.

As described above, according to this invention, the rotating drum screen is divided into at least a pair of left and right non-porous connection units and a screen unit along its axial direction, and these connection units and screen units are coaxially connected. Since the screen units are connected and connected in a detachable manner, the number of connected screen units can be changed, or the screen unit can be replaced with one of a different diameter or length. It has excellent effects such as being able to change the length of the screen, allowing effective processing, and being extremely easy to manufacture.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of one embodiment of this invention;
The figures are a sectional view taken along the line A-A of Fig. 1, Fig. 3 is a front view of the same, Fig. 4 is a support state diagram of the rotating drum screen, Fig. 5 is a front view of the screen unit, and Fig. 6 is a front view of the screen unit.
The drawings are a view in the direction of the arrows in FIG. 5, FIG. 7 is a front view of the connection unit, FIG. 8 is a view in the direction of the arrows in FIG. 7, and FIG. 9 is a diagram of the connected state of the rotating drum screen. 2... Rotating drum screen, 4... Slag conveyance means, 9... Connection unit, 10... Screen unit.

Claims (1)

[Scope of utility model claims] A rotating drum screen that is supplied with waste water and collects and drains filtrate outside, and a filter that is placed inside this rotating drum screen and that allows filter dregs to fall from the entire length of the rotating drum screen and is transferred and discharged to the outside. The rotary drum screen includes a screen unit with openings at both ends, and at least a pair of left and right non-porous connection units that can be coaxially connected to the ends of the screen unit, and A filtration device characterized in that the unit and the screen unit are coaxially connected and connected in a detachable manner.