US3871575A - Centrifugal separator having valve in passageway beneath distributor foot - Google Patents

Centrifugal separator having valve in passageway beneath distributor foot Download PDF

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Publication number
US3871575A
US3871575A US452243A US45224374A US3871575A US 3871575 A US3871575 A US 3871575A US 452243 A US452243 A US 452243A US 45224374 A US45224374 A US 45224374A US 3871575 A US3871575 A US 3871575A
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US
United States
Prior art keywords
drum
piston valve
distributor
foot
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US452243A
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English (en)
Inventor
Heinrich Niemeyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Mechanical Equipment GmbH
Original Assignee
Westfalia Separator GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westfalia Separator GmbH filed Critical Westfalia Separator GmbH
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Publication of US3871575A publication Critical patent/US3871575A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/06—Arrangement of distributors or collectors in centrifuges
    • 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
    • B04B1/18—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 controlled by the centrifugal force of an auxiliary liquid

Definitions

  • ABSTRACT A centrifugal separator having discharge passageways at the drum periphery for intermittent discharge of solids and a piston valve for opening and closing of the discharge passageways.
  • a distributor receives the separator feed. conveys the feed along the drum axis. and then radially outward through a radially extending passageway defined by the distributor foot and the piston valve.
  • Openings are provided in the distributor foot adjacent the axis for passage of the feed upwardly to the stack of separator plates overlying the distributor foot.
  • a valve plate is mounted either on the piston valve or the distributor foot and extends either toward the distributor foot or toward the piston valve for engagement therewith to close the radially extending passageway at a location radially outwardly of the openings in the distributor foot, with the piston valve in the closed position, and open the radially extending passageway with the piston valve in the open position.
  • the valve in the radially extending passageway prevents feed from by-passing the separator plates during the normal centrifuging operation.
  • the invention relates to a self-cleaning centrifugal separator having a distributor terminating in a distributor foot having apertures which connect the distributor entrance chamber with the separating chamber, and in which the entrance chamber communicates with the solids chamber of the drum through an annular gap between the distributor foot and the piston valve.
  • Such a drum is known, for example, from German Pat. No. l,297,036.
  • centrifugal separators of older design have been constructed so that, when the distributor was inserted, the distributor foot was guided on an annular projection of the drum bottom until it was seated and formed with the drum bottom a closed preliminary separation chamber.
  • a closed chamber has the disadvantage that it is rapidly filled with solids, especially when the rising channels are located far out and the fluid being separated contains relatively large amounts of solids.
  • a centrifugal separator of this kind is shown by German Pat. No. 368,2 l3, for example.
  • the invention is addressed to the problem of constructing a self-cleaning centrifugal separator of the kind described in the beginning so that the preliminary separation chamber formed by the distributor foot and piston valve will be closed during the centrifuging periods and open during the ejection of the solids.
  • the invention is characterized by a valve plate fastened to the piston valve and a projection provided on the distributor foot outside of the apertures passing through the foot, the said projection cooperating with the cylindrical outer surface of the valve plate to open and close the preliminary separation chamber upon the axial movements of the piston valve.
  • the preliminary separation chamber is also emptied each time that the solids are ejected.
  • the solids which deposit in the preliminary separation chamber provide an adequate seal. Since an absolute sealing of this chamber is not important, there is no need for special seals.
  • the invention is concerned with a centrifugal separator having a rotatably mounted drum defined by an upper end member and a lower end member, enclosing a drum chamber for the separation.
  • the separator has at least one discharge passageway disposed at the radially outward periphery of the drum.
  • a piston valve is disposed within the drum and defines one of the end members, and is movable vertically to open and close the discharge passageway or passageways.
  • a distributor is disposed coaxially within the drum for receiving feed to the separator and conveying the feed along the axis of the separator.
  • the distributor has a distributor foot extending radially outwardly from adjacent the drum axis and over at least a portion of the piston valve, defining with the piston valve a radially extending passageway for receiving drum feed.
  • the distributor foot terminates at the radially outwardly disposed end thereof in spaced relation with the piston valve so as to define an annular gap between the piston valve and distributor foot communicating the radially extending passageway with the drum chamber.
  • the distributor foot has an opening or openings adjacent the drum axis for passage of the feed from the distributor to the drum chamber.
  • a valve plate is mounted either on the piston valve or the distributor foot and extends either towards the distributor foot or toward the piston valve for engagement therewith to close the radially extending passageway at a location radially outwardly of the opening or openings in the distributor foot, with the piston valve in the closed position and open the radially extending passageway with the piston valve in the open position.
  • Means are provided for separating the feed to the separator, such means being disposed within the drum chamber adjacent the drum axis.
  • a stack of separator plates are disposed over the distributor foot.
  • the separator plates provide a separating section or chamber for radially inward flow of specifically lighter component of the feed and radially outward flow of specifically heavier componet.
  • a rotatably mounted separator drum includes upper end member 18 and bottom 19 which are secured together by ring 20.
  • the drum includes discharge passageway 3 for intermittent discharge of solids.
  • Piston valve 1 is disposed within the bottom 19.
  • the piston valve 1 and the upper end member 18 together define a drum chamber 24 for the separation of the liquid mixture and the solids.
  • the drum chamber includes separating section or chamber 8 in which a stack of separator plates 14 is mounted, and solids collection section or chamber 13.
  • Distributor 4 is disposed coaxially within the drum, and includes distributor foot 5, having an opening 6 for introduction of feed into the separating section or chamber 8.
  • the pis' ton valve 1 is movable axially to open and close discharge passage 3.
  • the piston valve 1 is placed in the closed position represented in the drawing when the closing chamber 2 is filled with a control fluid, and when the control fluid is let out of this chamber. by introducing fluid into passageway 21 to actuate control fluid relief valve 22, the piston valve is moved by the pressure of the drum charge into its open position. In the open position it releases the annular gap 3 for the ejection of the solids separated from the liquid.
  • the distributor 4 is provided with conical distributor foot 5. Openings or apertures 6 in the distributor foot connect the entrance chamber 7 with the separating chamber 8. Between the distributor foot and the piston valve 1 there is a radially extending passageway 23 terminating in a permanently open annular gap 9.
  • a valve plate 10 is fastened to the piston valve, the cylindrical outer surface of said valve plate cooperating with a projection I] provided on the distributor foot 5, the projection being machined at a greater distance from the axis of rotation than the apertures 6 in the distributor foot.
  • the preliminary separation chamber l2 is closed off from the solids chamber 13 outside of the plate stack 14, and in the open position it is connected thereto through an annular gap forming at 15.
  • centrifugal separator comprising:
  • a rotatably mounted drum having an upper end member and a lower end member enclosing a drum chamber for the separation, and having at least one discharge passageway disposed at the radially outward periphery of the drum,
  • a piston valve disposed within the drum defining one side of the drum chamber and movable vertically to open and close the discharge passageway(s),
  • a distributor coaxial within the drum for receiving feed to the separator and conveying the feed along the axis of the separator, the distributor having a distributor foot extending radially outwardly from adjacent the drum axis and over at least a portion of the piston valve and terminating at the radially outwardly disposed end thereof in spaced relation with the piston valve so as to define an annular gap between the piston valve and distributor foot communicating the radially extending passageway with the drum chamber,
  • valve plate mounted either on the piston valve or the distributor foot and extending either toward the distributor foot or toward the piston valve for engagement therewith to close the radially extending passageway at a location radially outwardly of said opening(s) in the distributor foot, with the piston valve in the closed position and open the radially extending passageway with the piston valve in the open position.
  • valve plate being mounted on the piston valve.
  • Centrifugal separator means for separating the feed to the separator disposed within the drum chamber adjacent the drum axis. for radially inward flow of a specifically lighter component of the feed and radially outward flow of a specifically heavier component, the drum including a discharge passageway for receiving at least part of said specifically heavier component and discharging it from the drum.

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  • Centrifugal Separators (AREA)
US452243A 1973-03-20 1974-03-15 Centrifugal separator having valve in passageway beneath distributor foot Expired - Lifetime US3871575A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2313669A DE2313669C3 (de) 1973-03-20 1973-03-20 Selbstreinigende Trenntrommel mit Tellersatz und im Verteilerfuß angeordneten, den Einjaufraum mit dem Trennraum verbindenden Öffnungen

Publications (1)

Publication Number Publication Date
US3871575A true US3871575A (en) 1975-03-18

Family

ID=5875241

Family Applications (1)

Application Number Title Priority Date Filing Date
US452243A Expired - Lifetime US3871575A (en) 1973-03-20 1974-03-15 Centrifugal separator having valve in passageway beneath distributor foot

Country Status (9)

Country Link
US (1) US3871575A (sv)
JP (1) JPS5131698B2 (sv)
AT (1) AT336505B (sv)
BE (1) BE811114A (sv)
CH (1) CH565595A5 (sv)
DE (1) DE2313669C3 (sv)
FR (1) FR2222142B1 (sv)
NL (1) NL158715B (sv)
SE (1) SE399367B (sv)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083488A (en) * 1976-03-09 1978-04-11 Westfalia Separator Ag Centrifugal separator having hydraulically operated outlet valves
US4193537A (en) * 1977-11-01 1980-03-18 Alfa-Laval Ab Centrifugal separator with presedimentation means
US4347971A (en) * 1977-03-03 1982-09-07 Joy Manufacturing Company Centrifuge apparatus
US4392846A (en) * 1981-05-18 1983-07-12 Joy Manufacturing Company Centrifuge apparatus
US4410317A (en) * 1981-05-15 1983-10-18 Westfalia Separator Ag Self-discharging centrifugal drum
US4432748A (en) * 1976-09-03 1984-02-21 Joy Manufacturing Company Centrifuge apparatus and method of operating a centrifuge
US4505700A (en) * 1983-02-16 1985-03-19 Westfalia Separator Ag Centrifuge with a self-emptying drum
US9387491B2 (en) * 2013-03-06 2016-07-12 Alfa Laval Corporate Ab Centrifugal separator having a valve body provided in an outlet channel

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5391461A (en) * 1977-01-20 1978-08-11 Takaoka Kogyo Kk Method of preventing generation of cavity in liquid collect tube and apparatus therefor
DE2844917C2 (de) * 1978-10-14 1984-08-30 Westfalia Separator Ag, 4740 Oelde Selbstentleerende Schleudertrommel
DE19519693C1 (de) * 1995-05-30 1996-08-22 Westfalia Separator Ag Verfahren und Vorrichtung zum Füllen einer selbstentleerenden Schleudertrommel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754701A (en) * 1964-10-15 1973-08-28 Westfalia Separator Ag Self cleaning centrifuge drum with a piston valve defining one side of the sludge chamber
US3785548A (en) * 1971-10-04 1974-01-15 Alfa Laval Ab Centrifuge with intermittent sludge discharge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754701A (en) * 1964-10-15 1973-08-28 Westfalia Separator Ag Self cleaning centrifuge drum with a piston valve defining one side of the sludge chamber
US3785548A (en) * 1971-10-04 1974-01-15 Alfa Laval Ab Centrifuge with intermittent sludge discharge

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083488A (en) * 1976-03-09 1978-04-11 Westfalia Separator Ag Centrifugal separator having hydraulically operated outlet valves
US4432748A (en) * 1976-09-03 1984-02-21 Joy Manufacturing Company Centrifuge apparatus and method of operating a centrifuge
US4347971A (en) * 1977-03-03 1982-09-07 Joy Manufacturing Company Centrifuge apparatus
US4193537A (en) * 1977-11-01 1980-03-18 Alfa-Laval Ab Centrifugal separator with presedimentation means
US4410317A (en) * 1981-05-15 1983-10-18 Westfalia Separator Ag Self-discharging centrifugal drum
US4392846A (en) * 1981-05-18 1983-07-12 Joy Manufacturing Company Centrifuge apparatus
US4505700A (en) * 1983-02-16 1985-03-19 Westfalia Separator Ag Centrifuge with a self-emptying drum
US9387491B2 (en) * 2013-03-06 2016-07-12 Alfa Laval Corporate Ab Centrifugal separator having a valve body provided in an outlet channel

Also Published As

Publication number Publication date
JPS5131698B2 (sv) 1976-09-08
ATA93874A (de) 1976-08-15
NL158715B (nl) 1978-12-15
FR2222142B1 (sv) 1976-11-26
DE2313669A1 (de) 1974-10-10
NL7403780A (sv) 1974-09-24
DE2313669B2 (de) 1975-01-30
DE2313669C3 (de) 1975-09-25
AT336505B (de) 1977-05-10
SE399367B (sv) 1978-02-13
JPS49128368A (sv) 1974-12-09
FR2222142A1 (sv) 1974-10-18
CH565595A5 (sv) 1975-08-29
BE811114A (fr) 1974-05-29

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