JPS6338895Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a solid-liquid separator whose purpose is to entrain solids attached to the inner wall of a screen drum, peel them off, and automatically move them to the solids discharge side for sequential discharge. It is.

Conventionally, various studies have been made regarding the discharge of solid matter adhering to the screen drum, but even if it is relatively easy to roll up and peel off the solid matter, there is no simple structure for moving the solid matter to the discharge port side, and it is difficult to solve the problem. be.

However, in this invention, a plurality of guide vanes were arranged in parallel on the inside and lower part of the screen drum and brought close to the inner surface of the drum, so that the solids that were caught and peeled off from the inner surface of the drum were successfully moved to the discharge port side by the guide vanes. That's what I did.

That is, to explain this invention with reference to an embodiment, a closing plate 2 is fixed to one end of a screen drum 1 having a large number of microfiltration grooves on the peripheral wall, and a reinforcing rod 5 and a rotating shaft 3 are attached to the outside of the central part of the closing plate 2. The base end of the rotary shaft 3 is fixed, and the rotary shaft 3 is rotatably supported by a bearing 4, and is constructed in a cantilevered manner. The raw water pipe 7 supported by the support stand 6 is inserted from the opening side of the screen drum 1, and the raw water pipe 7
A raw water tank 8 is installed on the insertion part in the drum, and the raw water tank 8 and the raw water pipe 7 are connected by a connecting pipe 19.

Inside the raw water tank 8, weir plates 9, 9a are inserted from above and below parallel to the rotating shaft 3, dividing the inside of the raw water tank 8 into three sections, so that the raw water flows in a curved manner as shown by arrows 10, 11. be. In addition, an overflow port 12 is provided near the inner wall of the drum of the raw water tank.
A chute 13 is provided protruding from 2 toward the inner wall of the drum. A funnel-shaped receiving box 14 is installed below the screen drum 1, and a drain port 1 is provided at the bottom.
5 is drilled. The base ends of angles 16, 16a are fixed horizontally to the support base 6, and the upper edges of guide vanes 17, 17 are fixed to the lower surfaces of angles 16, 16a at predetermined intervals and with a gentle slope. A small gap (for example 5 mm) is provided between the lower edge of 17 and the inner wall of the drum. the angle 16,
By adjusting the fixed position of the guide blade 16a up and down, the gap between the lower edge of the guide blade and the inner wall of the drum can be adjusted. In the embodiment described above, when raw water is sent through the raw water pipe 7 as shown by the arrow 18, the raw water rises in the connecting pipe 19 and enters the raw water tank 8.
It bends and flows as indicated by the arrows 10 and 11 and is discharged from the chute 13 to the inner wall of the drum as indicated by the arrow 20.

Since it flows down through the chute 13 in this manner, it is sent evenly to the inner wall of the drum in the form of a film, and is efficiently filtered. In this way, the moisture in the raw water passes through the slit 21 provided in the wall of the screen drum 1 and falls as shown by the arrow 22, enters the receiving casing 14, and is discharged to the outside through the drain port 15. .

On the other hand, as shown in Figures 3 and 4, the solids in the raw water are rolled in and peeled off from the inner wall of the drum by their own weight, and the upper part of the rolled-in solids is guided by guide vanes and sequentially shown in the arrow direction. The solids are moved in the direction 23, discharged from the opening of the drum as shown by the arrow 24, and discharged from the solid content discharge hopper 25 to the outside world.

In the above, the solid content is indicated by the dashed line A→B→C in Figure 3.
→ D → E and sequentially move toward the discharge port side, but since the screen drum rotates and the solid matter is rolled up, and the guide vanes are fixed, the above-mentioned movement form is achieved. In the figure, 26 is a waterproof plate (to avoid splashes) installed on one side wall of the raw water tank, 27 is a drum wall cleaning nozzle, and 28 is an exhaust port.

That is, according to this invention, since the guide vanes are installed close to the inner lower part of the screen drum, it is possible to easily and automatically remove the solid matter that has been rolled up and peeled off from the inner wall of the drum. However, since there is no special moving part for ejection, there is no risk of failure.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted front view of the embodiment of this invention, Fig. 2 is a side view, Fig. 3 is a diagram of the principle of solid content movement, and Fig. 4 is a diagram of the relationship between the guide vane and the drum wall. It is a partially enlarged view showing the relationship. 1... Screen drum, 3... Rotating shaft, 6...
...Support stand, 7...Raw water pipe, 8...Raw water tank, 9,9
a...Weir board, 13...Chute, 17...Guide blade.

Claims (1)

[Scope of claim for utility model registration] 1. Raw water is fed into a horizontal screen drum,
In the device for solid-liquid separation of raw water while rotating the screen drum, a plurality of guide vanes for guiding separated solids are arranged in parallel at the lower inside of the screen drum and are installed close to the inner surface of the drum. Device. 2. The solid-liquid separator according to claim 1, wherein the guide vanes are installed over a length of 45 degrees or more in the rotational direction from the lowest part of the screen drum.