JPS588343Y2 - centrifuge - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vertical centrifugal separator that is most suitable for processing pulp that produces a highly viscous cake.

As shown in FIGS. 1 and 2, a conventional vertical centrifuge holds a rotating basket 1 at the center of its bottom, so the rotating shaft 2 and the bottom of the basket 1 are connected by an arm 3 or other holding rod. When feeding ore pulp, which needs to maintain its strength and therefore produces a particularly viscous cake, the cake 5 stuck to the canvas 4 stretched on the inner surface of the basket 1 is scraped off by a scraping device 6. Sometimes, since the arm 3 is present in the bottom opening which serves as the cake discharge lower, the scraped cake 5 gets caught on the arm 3 and is not properly discharged, and more and more cake 5 remains in the basket 1. This often resulted in problems with operations, making continuous operation difficult.

In view of these circumstances, the present invention opens the lower part of the basket 1 widely by holding the basket 1 at the upper part, thereby eliminating the above-mentioned obstacles when discharging the cake 5 and discharging the cake 5 smoothly. To provide a vertical centrifugal separator that can

Next, an embodiment of the present invention will be described with reference to FIG.
(not shown) to rotate the pulley 8 at the upper end of the rotating shaft 2 in the horizontal direction.

The lower part of the basket 1 is laminated to serve as a cake discharge lower, and a brim-like lip 9 is formed on the lower periphery of the basket 1 to protrude inward to prevent the feed pulp from falling and to remove the cake 5.
It has become easier to survive.

10 is a feed pipe for feeding ore pulp,
The pipe 10 is inserted into the basket 1 from above through the hollow rotary shaft 2, and is bent so that its distal end outlet 11 faces a campus 4 stretched around the inner periphery of the basket 1.

Further, the feed pipe 10 is supported by a support device 17 disposed above the pulley 8, and is configured to be movable up and down and back and forth within the hollow rotating shaft 2.

The cake scraping plate 16 is attached to the tip of the feed pipe 10 and is adapted to scrape off the cake 5 stuck to the inner surface of the campus 4 as the pipe 10 is moved by the support device 17.

Reference numeral 12 designates a casing that accommodates the basket 1, and the casing 12 is also open at the bottom, with an inward flange 13 formed at its lower periphery and a furnace fluid discharge port 14 at an arbitrary location.
is opened, and the filtrate that has passed through the campus 4 and the basket 1 is discharged from the system through the outlet 14.

Then, clay mineral pulp is supplied into the pipe 10 while the feed pipe 10 is retracted within the rotating shaft 2, and the pulp is discharged from the discharge port 11 toward the campus 4 while moving the pipe 10 up and down. The cake 5 is uniformly deposited on the canvas 4 to a desired thickness, and then the pipe 10 is advanced and the cake 5 is scraped off by the scraping plate 16.

The present invention is constructed as described above, and the basket is held at the upper part, and the lower part of the basket is wide open, and there are no obstacles such as arms supporting the basket as in the past.
When scraping cakes from the basket, even sticky cakes can be smoothly ejected without sticking to anything after scraping.

In addition, since the pulp feed pipe is configured to be movable, the cake is evenly adhered to the canvas, which prevents abnormal vibrations caused by unbalanced cake adhesion and improves dewatering efficiency. It is also possible to extend the service life and reduce maintenance costs.

Therefore, according to the present invention, even highly viscous cakes can be processed continuously without any problems, the range of pulp that can be processed is expanded, and the processing cost for solid-liquid separation can be greatly reduced. It is simple and has various advantages.

[Brief explanation of drawings]

Figure 1 is a vertical cross-sectional view of a conventional centrifuge, and Figure 2 is a longitudinal cross-sectional view of a conventional centrifuge.
A sectional view and FIG. 3 are longitudinal sectional views of the centrifugal separator according to the present invention. Code explanation 1...Basket, 2...
Rotating shaft, 4...campus, 5...cake, 10...feed pipe, 11...
...Discharge port, 12...Casing, 16...
...Scraping plate, 17...Support device.

Claims (1)

[Scope of utility model registration request] The lower end of a hollow drive rotating shaft is fixed to the center of the upper surface of the basket, which is opened at the bottom to serve as a cake discharge port, and pulp is supported within the hollow rotating shaft so as to be movable up and down and back and forth. A centrifugal separator for processing highly viscous cake producing pulp, characterized in that a feed pipe to be supplied is inserted through the feed pipe, and a cake scraping plate is attached to the tip of the feed pipe facing the inner surface of the basket.