JPS5849761Y2 - Centrifugal separator solids discharge device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a solid matter discharge device suitable for a centrifugal separator for separating a fluid containing solid matter.

In a conventional centrifugal extractor, as shown in FIG. 1, heavy liquid is fed into a rotor 2 fixed to a shaft 1 through a heavy liquid introduction pipe 3 as shown by arrow 6, and light liquid is fed as shown by arrow 8. The light liquid is introduced through the light liquid introduction pipe 4.

As the rotor 2 rotates, the heavy liquid flows toward the outer periphery of the rotor 2, the light liquid flows toward the shaft 1 side, and the light liquid is discharged from the shaft 1 as indicated by an arrow 9.

On the other hand, the heavy liquid gathers around the outer periphery of the rotor 2 and is discharged from the shaft 1 as shown by an arrow 7 through a heavy liquid discharge passage formed by a partition plate 5.

In this device, solid matter with a large specific gravity collects on the outer periphery of the rotor 2 together with the heavy liquid, and cannot be returned to the shaft 1 together with the heavy liquid to be discharged.

Therefore, the solids may not necessarily all be discharged together with the heavy liquid, and may accumulate in the rotor 2.

In such a case, it is necessary to temporarily stop operation and clean it from the outside, and continuous operation is not possible.

However, centrifugal extractors often require continuous operation, which has been a major drawback in adopting this device.

The purpose of this invention is to enable continuous operation without stopping the equipment in extraction operations and centrifugation operations for liquids containing solids. The valve is opened and closed by hydraulic fluid, making it possible to discharge solids without stopping the operation.

FIG. 2 shows an embodiment of the present invention, which is applied to section A in FIG. 1.

In the figure, a plurality of solid matter discharge holes 10 are provided in the rotor 2 in the circumferential direction of the rotor, and a solid matter discharge portion 11 is attached at a position continuous with the solid matter discharge holes 10.

The solid matter discharge section 11 includes a piston 1 used to open and close the valve 12.
3 and a hydraulic fluid inlet passage 14 for operating the piston 13.
It consists of

16.17 is a plug.

Normally, the valve 12 is automatically closed due to the centrifugal force caused by the rotation of the rotor 2.

When discharging solids, feed the hydraulic fluid in the direction of the arrow 20 so that the pressure near the outer circumference of the piston 13 is greater than the sum of the fluid pressure inside the rotor 2 and the outward force of the valve 12 and piston 13. , the screw latch 13 moves inward as shown by the chain line and pushes the valve 12 inward, and the valve 12 is opened and the solids are discharged from the solids discharge hole 10 along the path indicated by the arrow. It is discharged.

When discharging solids is to be stopped, if the supply of the hydraulic fluid is stopped, the liquid on the outer periphery of the piston 13 will be discharged from the hydraulic fluid discharge hole 15, and the piston 13 will absorb the hydraulic pressure inside the piston 13, the load on the valve 12, and the piston 13. The valve 13 automatically moves outward due to its own load, and the valve 12 comes into close contact with the valve seat and is in a closed state.

As described above, by feeding the hydraulic fluid only during discharge, it is possible to discharge solids without stopping the operation.

Note that the piston 13 and valve 12 are not integrated.
This is because even if the piston 13 is tilted, it will not affect the opening and closing of the valve 12.

As described above, according to the present invention, there is no need to stop operation and clean the solid matter that accumulates inside the rotor, and the solid matter can be easily discharged.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a centrifugal extractor, and FIG. 2 is a sectional view showing an embodiment of the present invention. 1...Shaft, 2...Rotor, 5
...Partition plate, 10...Solid discharge hole,
11... Solid discharge section, 12... Valve,
13... Piston, 14... Hydraulic fluid inlet hole, 15... Hydraulic fluid discharge small hole.

Claims (1)

[Scope of utility model registration request] 1. In a device that has the function of feeding fluid into a rotor and separating substances with different specific gravity in the fluid by centrifugal force caused by rotation of the rotor, a discharge hole is provided on the outer periphery of the rotor for discharging solid matter, and this discharge hole 1. A solid matter discharge device for a centrifugal separator, characterized in that a valve mechanism is provided in a discharge passage communicating with the centrifugal separator, and the valve mechanism is actuated by a hydraulic fluid introduced from the outside. 2. A solid matter discharge device for a centrifugal separator as set forth in claim 1, which is a utility model registration, and includes, as a valve mechanism, a valve provided in a discharge passage, a piston for opening and closing the valve, and a hydraulic fluid supply/discharge port communicating with the piston chamber. . 3. A solid matter discharging device for a centrifugal separator according to claim 1 or 2, in which a plurality of valve mechanisms are arranged in the circumferential direction of the rotor. 4. A solid matter discharge device for a centrifugal separator according to claim 2 or 3 of the utility model registration claim, in which the piston and the valve are separated.