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KR-102962616-B1 - Self-emptying separator

KR102962616B1KR 102962616 B1KR102962616 B1KR 102962616B1KR-102962616-B1

Abstract

The present invention relates to a self-emptying separator having a rotatable centrifugal drum (1) having a vertical rotation axis and provided with solid discharge openings (7), wherein an emptying mechanism having a piston valve (6) is assigned to the solid discharge openings (7), wherein the piston valve can be moved to an open position and a closed position in a fluid-operated manner, particularly by a fluid, and the emptying mechanism further comprises a control assembly (28) assigned to the piston valve (6) to control the opening and closing operation of the piston valve (6), wherein the control assembly (28) comprises a control device (24) and a metering device (14) for metering and dispensing the amount of fluid, particularly the amount of liquid, required for the opening process, and wherein the metering device (14) has a metering element (17) movable within a metering chamber (16), wherein the metering element (17) is connected to the metering chamber (16) and a fluid chamber (18) and pressure to which compressed air is supplied. The chamber (19) is subdivided, and the metering device (14) has a control system for measuring the amount of fluid, particularly the amount of liquid, in the fluid chamber (18) required for the opening process, and the control system has a measuring device (15) based on the fluid measurement principle.

Inventors

  • 횔셔 안드레아스
  • 바텔트 토마스

Assignees

  • 게아 미케니컬 이큅먼트 게엠베하

Dates

Publication Date
20260507
Application Date
20210610
Priority Date
20200624

Claims (9)

  1. A self-emptying separator comprising a rotatable centrifugal drum (1) having a vertical rotation axis and provided with solid discharge openings (7), An emptying mechanism having a piston valve (6) is assigned to the solid discharge openings (7), the piston valve can be moved to an open position and a closed position by a fluid in a fluid-operated manner, the emptying mechanism further includes a control assembly (28) assigned to the piston valve (6) to control the opening and closing operation of the piston valve (6), the control assembly (28) has a control device (24) and a metering device (14) for measuring and distributing the amount of fluid required for the opening process, the metering device (14) has a metering element (17) displaceable within a metering chamber (16), the metering element (17) subdivides the metering chamber (16) into a fluid chamber (18) and a pressure chamber (19) for the application of compressed air, the metering device (14) has a control system for measuring the amount of fluid in the fluid chamber (18) required for the opening process, the control system has a measuring device (15), and the The measuring device is based on the fluid measurement principle, and the control system having the measuring device based on the fluid measurement principle has a pressure measuring device that is placed in the pressure chamber (19) and can determine the pressure within the pressure chamber (19), and the pressure within the pressure chamber (19) forms the basis for measuring the amount of fluid required for the opening process. A self-emptying separator in which the volume of the pressure chamber (19) is determined such that even when the fluid chamber (18) is filled to its maximum, the pressure in the fluid supply line (20) is still higher than the counterpressure (P) in the pressure chamber (19).
  2. In paragraph 1, A self-emptying separator characterized in that the control assembly (28) has an injection chamber (8) for an opening fluid, and the fluid can be supplied to the injection chamber (8) through an opening fluid supply line (10) in which an opening fluid valve (12) is disposed to activate the opening operation.
  3. In paragraph 1, A self-emptying separator characterized in that the metering element (17) is designed as a piston or diaphragm.
  4. In paragraph 1, The above pressure chamber (19) is a self-emptying separator characterized by having a temperature sensor.
  5. delete
  6. In paragraph 1, A self-emptying separator characterized in that the above fluid chamber (18) is connected between a filling valve (21) and an opening fluid valve (12).
  7. In paragraph 1, A self-emptying separator characterized by having an orifice plate mounted within a fluid supply line (20).
  8. In Paragraph 7, A self-emptying separator characterized in that the orifice plate is positioned immediately upstream of the filling valve (21).
  9. A method for performing solid discharge in the treatment of a fluid product using a self-emptying separator according to any one of claims 1 to 4 or 6 to 8, wherein the method comprises: a. A step of providing the above-mentioned self-emptying separator and processing a fluid product to be processed to separate it into at least a liquid phase and a solid phase; b. opening the charging valve (21) so that the metering element (17) moves toward the pressure chamber (19) due to the incoming fluid, and the pressure inside the pressure chamber (19) increases; c. A step of performing measurements or repeated measurements in the pressure chamber (19) with a measuring device (15) and comparing the measurement results with a value manually or preset by a control device (24), wherein in step c), the pressure (P) in the pressure chamber is measured by a pressure measuring device, and the measured pressure is compared with a pressure preset as a default value manually or by a control device (24); d. A step of closing the filling valve (21) such that the measured open fluid volume exists within the fluid chamber (18) when the measured value corresponds to a default value, wherein in step d), the closing of the filling valve (21) occurs when the measured pressure corresponds to a predetermined pressure so that the measured open fluid volume exists within the fluid chamber (18); e. opening the open fluid valve (12) and the valve (23) of the compressed air line (22) to inject the metered open fluid volume within the fluid chamber (18) into the separator through the open fluid supply line (10) and the injection chamber (8) for the open fluid, and opening the piston valve (25) to move the piston valve (6) from the closed position to the open position thereby releasing the solid discharge openings (7) and allowing the solid to be discharged from the centrifugal drum (1); a method comprising: opening the open fluid valve (12) and the valve (23) of the compressed air line (22) to inject the metered open fluid volume into the separator, and opening the piston valve (25) to move the piston valve (6) from the closed position to the open position, thereby releasing the solid discharge openings (7) and allowing the solid to be discharged from the centrifugal drum (1).

Description

Self-emptying separator The present invention relates to a self-emptying separator according to the preamble of claim 1 and a method for processing centrifugal material according to claim 9. As defined herein, a discontinuous emptying separator has, in addition to one or more outlets for one or more liquid phases, an emptying mechanism having a fluid-operated piston valve that uses a liquid, in particular, as the fluid, wherein the piston valve can be alternately moved between an open position and a closed position, and as a result, the piston valve opens (open position) and closes (closed position) solid discharge openings within the drum wall. In the open position, the solid phase is discharged from the centrifugal drum. In the closed position, it is not. To ensure the precise operation of this drum emptying system in a self-emptying separator, a fluid supply and discharge system equipped with a piston valve may be provided. This serves to fill the chamber of the piston valve with fluid (liquid) and to allow the piston valve to move by releasing fluid from the chamber to empty solids. For example, in a separator with a vertical rotation axis, the fluid exits below the piston valve, causing the product in the drum to push the piston valve vertically downward. The goal here is to supply the hydraulic system of the centrifugal drum with the volume of liquid ("opening fluid") measured as accurately as possible within a short time during discharge. Therefore, the volume of the opening fluid determines the discharge volume. In many separation processes, it is advantageous to be able to flexibly set, adjust, or, more generally, change the emptying volume via electronic control units. The challenge here is to reliably meter the fluid volume as accurately as possible for specific requirements, varying as needed even when the upstream pressure within the fluid supply undergoes significant fluctuations. According to patent specification DE 31 15 875 C1, a metering device having a housing and a metering element movably guided within the housing may be, for example, a metering piston or a metering diaphragm and is used to meter the volume of an open fluid. When the housing is filled with fluid, the metering element moves and is pressurized against the stop of a control screw. The amount of liquid measured in this way is used as the open fluid, that is, to open a piston valve in a centrifugal drum. To this end, the metering element is pressurized, for example, pneumatically, and returns to an end position, thereby allowing the fluid to be transferred into the centrifugal drum and, accordingly, to a piston valve at a corresponding valve position. By adjusting the set screw, the stopping position of the metering element is changed as needed, which ultimately changes the amount of liquid metered by the metering device. However, this implies that the operator must manually set the required emptying volume directly on the machine. In DE 31 15 875 C1, a deformable diaphragm is used as the metering element. A variation of this metering device is described in DE 10 2005 049 941 A1. Here, a metering piston guided within a cylinder as a housing is used as a metering element. The stroke of the metering piston is limited by a threaded rod forming a stop for the metering piston. The position of the stop can be adjusted by an electric motor so that the volume of the open fluid can be set via an electronic control system, or optionally, automatically adjusted. Although metering devices according to conventional technology have proven themselves in practice, these solutions require mechanical actuators for metering to move the piston to a desired position by means of a screw spindle. This can be a hindrance in cases of high dynamic requirements for regulating processes regarding solid discharge. The present invention is described in more detail below by exemplary embodiments with reference to the drawings. The present invention is not limited to these exemplary embodiments and may be realized in other ways or other equivalent ways depending on the wording. FIG. 1: Showing a partial cross-sectional view of a centrifugal drum and a block diagram of an emptying mechanism of a centrifugal drum for solids; FIG. 2: Shows a cross-sectional view and a block diagram of a weighing device according to the present invention, wherein the weighing device is shown at a first position; FIG. 3: Shows a cross-sectional view of a weighing device and a block diagram of a weighing device, wherein the weighing device is shown in a second position. Exemplary embodiments are described in the following drawings. Individual features of the exemplary embodiments may be combined with exemplary embodiments not illustrated and may each be suitable as an advantageous design for the subjects described in one or more of the main claims and dependent claims. FIG. 1 shows a lower lateral cross-sectional view of a rotatable centrifuge drum (1) designed as a separator. T