Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
  • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
  • B04B1/14—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with periodical discharge
  • B04B1/16—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with periodical discharge with discharging outlets controlled by the rotational speed of the bowl
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
  • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
  • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
  • B04B—CENTRIFUGES
  • B04B7/00—Elements of centrifuges
  • B04B7/02—Casings; Lids

Definitions

• the present invention relates to a self-emptying separator according to the preamble of claim 1.
• Self-draining separators as defined in this document have, in addition to one or more outlets for one or more liquid phases, a draining mechanism with a piston valve that can be moved alternately into an open and a closed position by a fluid, particularly with liquid as the fluid. This causes the piston valve to intermittently open solids discharge openings in the drum wall for a certain period of time (open position) and close them again (closed position). In the open position, a solid phase is drained from the centrifuge drum. This is not the case in the closed position.
• each discharge opening is equipped with a centrifugal valve.
• This valve closes the respective openings at operating speed and opens them at low drum speeds, allowing a cleaning fluid to flow through.
• the disadvantage of this design lies in the tolerance of the spring elements of the individual centrifugal valves. This makes it impossible to open all discharge openings at exactly the same time—as would be required for solids discharge. Opening the discharge openings at a different time would lead to undesirable drum imbalance during discharge.
• the targeted reduction of the drum speed before emptying is DE 10 2017 112 553 This involves reducing the drum's speed to reduce wear on the drum and protect the product being discharged.
• valve is designed as a centrifugal valve, a valve is created and used that advantageously operates without auxiliary power and without control pulses from an external controller. However, it is also practical and simple if the valve is designed as an electromagnetically controlled valve.
• the inlet channel forms a connecting channel between a distributor channel and the closing chamber. This easily establishes a connection between the distributor or the separator's downstream separation chamber and the closing chamber.
• the deflection plate is designed to ensure that the product P is diverted from the separation chamber or the distributor into the inlet channel to the closing chamber before it flows further into the centrifuge drum after the closing chamber is filled with product P and the piston slide is thus in its closed position.
• This simple design measure ensures that the separation process can be continued quickly after solids have been emptied.
• the separator has a rotatable centrifugal drum 1, which as in Fig. 1 shown, can have a vertical axis of rotation D.
• the centrifugal drum 1 is rotated by a drive motor M, which here acts directly on a drive spindle S of the centrifugal drum 1.
• the drive spindle S is rotatably mounted in a machine frame G. It carries the centrifugal drum 1, which is placed on a free end of the drive spindle S.
• other drives are also feasible, for example an indirect drive of the centrifugal drum 1, wherein a drive motor acts on the drive spindle of the centrifugal drum 1 via a belt drive.
• a drive system which acts directly on the drum and drives it without a spindle is also feasible.
• the centrifugal drum 1 can be designed with a single cone and/or, as in this case, a double cone (bottom and/or top, and especially inside).
• the centrifugal drum 1 can have a lower drum section 2 and an upper drum section 3. These drum sections 2, 3 can be connected to each other in various ways, for example with a locking ring 4.
• the centrifugal drum 1 also has a product inlet pipe 7.
• a distributor 5 with at least one distribution channel 51 for supplying product from the product inlet pipe 5 into a separation chamber 10 is formed in the centrifugal drum 1. In the distributor 5, the product is transferred into the rotating system.
• the centrifugal drum 1 further comprises a separation chamber 10, in which the actual centrifugal separation takes place.
• This chamber comprises a disc stack 6 of separation discs. It further comprises, radially outwardly, a solids collection chamber 13, in which the solid phase S separated from the suspension or the flowable product P collects during the separation and/or clarification process.
• the centrifugal drum 1 has at least one liquid discharge for a liquid phase L.
• the centrifugal drum can also have more than one liquid discharge
• the liquid discharge is designed here as a paring disc 16.
• the liquid discharge can also be realized in a different way.
• FIG.1 A so-called clarification separator is shown as an example, which is intended to clarify a product P to be processed in the centrifugal field or to separate a solid phase S and a liquid phase L from it.
• the separator can also be designed as a so-called separation separator, in which two liquid phases and one solid phase are separated from each other.
• a discharge mechanism is used to drain the solid phase S. It has a piston valve 8 for opening and closing solid discharge openings 9.
• the solid discharge openings 9 can be circumferentially distributed in the area of the largest diameter of the centrifugal drum 1.
• the piston valve is vertically movable here.
• the control arrangement here further comprises a closing chamber 11 for fluid.
• the fluid used in the separators according to the invention is the product P to be clarified, which is filled into the centrifugal drum 1 via the inlet pipe 7 and can be led from the distributor 5 or the separation chamber 10 into the closing chamber 11.
• the timing of the engine speed reduction and the engine speed reduction, as well as the timing of the subsequent engine speed increase and the engine speed increase, can be determined and initiated by the control unit mentioned above.
• the control unit also contains the engine control system required for engine speed control.
• the fluid volume remaining in the closing chamber 11 depends on the selected cross-sections of the inlet channel 12 and the outlet channel 17 of the closing chamber 11. By appropriately determining these cross-sections and the duration of the emptying, it is possible to ensure that not the entire volume of solids is emptied from the centrifuge drum 1, but only a portion.
• the flow conditions in the inlet channel 12, into the closing chamber 11, and/or in the outlet channel 17 from the closing chamber 11 toward the at least one valve 14 can be adjusted and optimized using nozzles or orifices depending on the respective requirements.

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• Centrifugal Separators (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=85036452

Family Applications (1)

Country Status (7)

Family Cites Families (8)

• 2022
  • 2022-02-07 DE DE202022100680.6U patent/DE202022100680U1/de active Active
• 2023
  • 2023-01-20 CN CN202380018887.4A patent/CN118613331A/zh active Pending
  • 2023-01-20 EP EP23701458.4A patent/EP4475996B1/de active Active
  • 2023-01-20 KR KR1020247022078A patent/KR20240145976A/ko active Pending
  • 2023-01-20 WO PCT/EP2023/051397 patent/WO2023148022A1/de not_active Ceased
  • 2023-01-20 JP JP2024542037A patent/JP2025503875A/ja active Pending
  • 2023-01-20 US US18/836,214 patent/US20250153192A1/en active Pending

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