JPS6240650Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device for adjusting the processing capacity in a dust removal or solid-liquid separator in which a drum-shaped rotating screen is arranged in a waterway so as to cross the waterway. .

Conventionally, the processing capacity of this type of separator is determined by the screen opening and the number of rotations of the screen.

However, after installation, only the rotational speed of the screen can be changed, so if the water level of the treatment liquid changes, it cannot be covered by changing the rotational speed alone.

That is, when the water level in the upstream waterway decreases as the inflow rate decreases, the point at which the dust transfers to the screen becomes lower, and the transfer of the dust occurs at the steeply sloped portion of the screen's circumferential surface.

For this reason, there was a drawback that the dust slipped on the screen and was not transferred to the scraping position of the scraper.

Another drawback was that dust accumulated therein and obstructed the passage of the processing liquid.

In consideration of the above points, this idea was designed so that when the water level on the inflow side decreases, the area below the water surface of the screen in contact with the water is adjusted to reduce the processing capacity and raise the water level, ensuring that dust is captured. An object of the present invention is to provide a processing capacity adjustment device.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

In the figure, A is a separator, and this separator A
consists of a waterway a, a drum-shaped rotating screen 1 that crosses the waterway a and is submerged below the water surface except for the upper part, and collects dust transferred by the circumferential surface of the screen 1 on the downstream side of the screen 1. It is composed of a scraper 2.

In addition, the water channel a located on the upstream side of the screen 1
is provided with an elevating plate 3 that adjusts the processing capacity of the screen 1 by elevating it.

In the illustrated case, the water channel a is provided with an inlet tube 5 for the processing liquid and an outlet tube 6 for the separated liquid at the upper and lower portions of the front wall of the tank 4, and the screen 1 is incorporated into the tank 4. Although the bottom wall 7 is provided from the bottom wall of the inlet tube 5 to the lower circumferential surface of the screen 1 below the water surface, the screen may be installed in a drainage channel (not shown).

In the illustrated case, the above-mentioned elevating plate 3 has a frontage 8 provided between the tip edge of the bottom wall 7 and the screen 1.
The distal end is brought into contact with the circumferential surface of the screen 1 so as to close the screen 1, and the distal end is overlapped with the lower surface of the distal end of the bottom wall 7, and the end penetrates the side wall 9 of the tank 4 directly below the distal end of the elevating plate 3. A shaft member 10 that can be rotated and locked after the rotation operation is installed, and
A horizontal receiving plate 1 is attached to the upper edge of the tip of the arm 11 that protrudes from both ends of the shaft member 10 toward the screen 1.
2 is provided, and this receiving plate 12 is provided so as to be parallel to the arm 11 on the lower surface of the elevating plate 3.
Further, pins 14 are fitted into the side wall 9 at both outer ends of the screen 1, and pins 14 are attached to the lower surface of the tip of the elevating plate 3 with the ends facing upward.
A lever 15 pivotally supported by the shaft member 10 is provided.
Although the elevating plate 3 is adjusted up and down by rotating clockwise and counterclockwise, other methods may be used, for example, by providing a small gap between the circumferential surface of the screen 1 and the tip of the bottom wall 7, and filling this gap. In some cases, an elevating plate shaped along the circumferential surface of the screen 1 is interposed so as to be adjustable in elevation (not shown).

In addition, the above-mentioned scraper 2 is as shown in the figure.
Parallel circular rotating plates 16 and parallel fixed plates 1
7.

Further, in the illustrated case, the shaft member 10 is locked after rotation by a plate-shaped body 18 located outside the side wall 9 and having its upper end fixed to both ends of the shaft member 10, and a shaft attached to the lower end of this plate-shaped body 18. An arc-shaped long hole 1 centered on the material 10
9, and a bolt 20 penetrating through the side wall 9 and the long hole 19.
and a nut 21 screwed into this bolt 20.

In the figure, reference numeral 22 denotes a cylindrical rubber packing freely fitted onto the shaft material 10 between the arms 11, and this packing 22 ensures that the end portion of the lift plate 3 is in close contact with the bottom wall 7.

23 is a stopper for determining the lowest position of the lifting plate 3;
24 is the driving device for screen 1, 25 is arm 1
1, and this cylinder 25 is attached to the shaft member 1.
0 and secure with bolts. 26 is a piece provided on the lower surface of the tip of the lifting plate 3, and the pin 14 is attached to this piece 26.
The end of the lever 15 is pivotally supported via.

The separator according to this invention has the above-mentioned structure, and the operation will be explained next.The processing liquid that flows in from the inlet pipe 5 passes through the gap between the parallel rings of the screen 1, and then passes through the discharge port pipe 5. heading to Dust that does not pass through the gap is transferred by adhering to or being transferred to the peripheral surface of the screen 1, and is scraped off by the scraper 2 and discharged from the chute 27.

Next, when the flow rate of the processing liquid from the spout 5 decreases and the water level drops, the position of dust adhesion or transfer becomes a steep slope position of the screen 1, and the dust transfer is not good. First, loosen the nut 21 and drive the shaft member 10 clockwise in Fig. 3 (shaft member 10
(by fitting the handle onto the square shaft at the end of the screen and operating the handle), the tip of the lifting plate 3 is pushed up by the arm 11 that rotates in the same direction, and as a result, the water area of the water surface on the inlet side of the screen 1 is increased. decreases, the processing capacity per unit time decreases and the water level rises. Therefore, screen 1
The position at which dust adheres to or transfers to the screen 1 becomes a position where the slope of the screen 1 is gentle, and the dust is transferred smoothly.

In addition, since the lever 15 is rotated counterclockwise in FIG. 3 when the tip of the elevating plate 3 is raised, the screen 1
The leading edge of the elevating plate 3 can always be brought into contact with the circumferential surface of the elevating plate 3.

After the above adjustment, the nut 21 is tightened.

Moreover, when the amount of inflow of the processing liquid increases, the tip of the elevating plate 3 may be lowered.

As described above, according to the separator according to this invention, a lifting plate is provided at the bottom of the waterway on the upstream side of the screen of the separator in which a rotating screen is provided in the waterway to adjust the processing capacity of the screen by moving up and down. , when the inflow volume decreases and the water level drops, the lifting plate is raised to reduce the processing capacity of the screen,
It can raise the water level.

Therefore, dust can be attached to or transferred to the gently sloped position of the peripheral surface of the screen and transferred to the collection position, and the dust can be prevented from accumulating in front of the screen.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway side view of the separator according to this invention, Figure 2 is an enlarged plan view showing the main parts of the same, and Figure 3 is a partially cutaway side view of the separator according to this invention.
The figure is an enlarged vertical side view of the same, and FIG. 4 is an exploded perspective view of the elevating plate. A...Separator, a...Waterway, 1...Screen, 2...Scraper, 3...Elevating plate, 4...
Tank, 5... Inlet pipe, 6... Outlet pipe, 7...
... Bottom wall, 8 ... Frontage, 9 ... Side wall, 10 ... Shaft material, 11 ... Arm, 12 ... Reception plate, 13 ... Rail, 14 ... Pin, 15 ... Lever.

Claims (1)

[Scope of utility model registration request] A waterway, a drum-shaped rotating screen that crosses the waterway and is submerged below the water surface except for the upper part;
In a separator comprising a scraper installed to collect dust transferred by the screen, an elevating plate is provided at the bottom of the waterway on the upstream side of the screen to adjust the processing capacity of the screen by moving up and down. A device for adjusting processing capacity in a separator, characterized by: