EP3426405A1 - Séparateur - Google Patents

Séparateur

Info

Publication number
EP3426405A1
EP3426405A1 EP17705880.7A EP17705880A EP3426405A1 EP 3426405 A1 EP3426405 A1 EP 3426405A1 EP 17705880 A EP17705880 A EP 17705880A EP 3426405 A1 EP3426405 A1 EP 3426405A1
Authority
EP
European Patent Office
Prior art keywords
drum
separator
centrifugal
separator according
centrifugal space
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.)
Granted
Application number
EP17705880.7A
Other languages
German (de)
English (en)
Other versions
EP3426405B1 (fr
Inventor
Wilfried Mackel
Angelika Voltmann
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
GEA Mechanical Equipment 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 GEA Mechanical Equipment GmbH filed Critical GEA Mechanical Equipment GmbH
Publication of EP3426405A1 publication Critical patent/EP3426405A1/fr
Application granted granted Critical
Publication of EP3426405B1 publication Critical patent/EP3426405B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B04B7/04—Casings facilitating discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls

Definitions

  • the invention relates to a separator with a rotating system with an operationally rotatable drum with a vertical axis of rotation, which has a drum interior, which is divided into a lower double-cone centrifugal space and an upper double-cone centrifugal space, both centrifugal chambers each having Feststoffaustragsötechnisch located in the lower centrifugal space of a piston valve and in the upper centrifugal space of an auxiliary slide can be released and closed.
  • the prior art is also called DE 1 141 951 A1.
  • This document shows a separator with a drum, in which a Trenntellerver is used, the Trenntellerdigit is divided by a separating plate, which has a larger diameter than the other separation plates, in two Trenntellerversabête below and above this separation plate.
  • a product to be processed is supplied through a feed in the drum shaft and enters the separation chamber via a distributor. There, in turn, it enters a riser channel of the separator plate package, which extends over the entire height of the separator plate package.
  • the centrifugal material entering the separation chamber is freed of the main part of the sludge in the space below the separation plate, which forms a sludge cushion at the periphery of the separation chamber.
  • the heavy liquid is prevented by the mud cushion from passing around the outer edge of the larger diameter separation plate.
  • the remaining light liquid is separated off and collected.
  • the separated heavy liquid is discharged through a channel at a larger diameter and the separated light liquid through another channel at a smaller diameter of the drum from the separation chamber.
  • the position of the separation plate with a larger diameter can be varied depending on the application in the separation chamber. According to a preferred embodiment For example, it is approximately at the height of piston slide openings for discharging solids from the drum.
  • DE 1 146 451 A is called for the technological background, the two superimposed double conical Feststoffsammei spaces disclosed in a jet separator, from which lead discharge channels in operation always open outlet nozzles, which lie on a common vertical height.
  • the invention has, starting from the above-mentioned prior art, the task to improve the structural design of the generic centrifuge and to expand their scope.
  • the moment of inertia JQ of the rotating system about a transverse axis Q extending through the center of gravity of the rotating system of the drum perpendicular to the vertical axis of rotation D is greater than the mass moment of inertia JD of the rotating system about the vertical axis of rotation D of the rotating system, in particular more than 1, 2 times bigger.
  • This embodiment means in each case that the separator has a relatively large height relative to the diameter, which makes it possible in a design of the drum interior as a double double hollow cone to achieve a high clarifying power through separation plates with a relatively large diameter with constant drum diameter.
  • the diameter of the drum is kept relatively small compared to the height, which, among other things, facilitates their manufacture.
  • the drum interior is divided with a conical graduated plate in the lower double-cone centrifugal space and the upper double-cone centrifugal space.
  • the drum interior is completely divided by this dividing plate, which extends radially outward to the auxiliary slide and radially inside preferably to the manifold, fully functional except for a product transfer into two separate centrifugal chambers, so that in a simple manner a two-stage separation in the manner of a series connection of two centrifugal separators in only one rotating system can be realized.
  • the divider plate preferably has a distribution channel for the transfer of clarified product from the lower centrifugal space into the upper centrifugal space. This directs the clarified product to be passed from the first centrifugal space into the second centrifugal space advantageously preferably directly to the diameter of at least one riser channel in a separating disk stack in the second upper centrifugal space.
  • the drum can be designed as a clarifier for clarifying a flowable product of solids in the area of the lower centrifugal space and in the upper centrifugal space as a clarifier or as a combined clarifier and separator on the one hand for clarifying a flowable product of solids and for separating the product into two liquid phases different density (eg L1 and L2). Since the drum can form two centrifugal clarifiers connected in series, a particularly extensive clarification of the product in only one rotating system is possible. These are u.a.
  • the lower, discontinuously closable solids discharge openings in the lower centrifugal space and the axially upper, discontinuously closable solids discharge openings in the upper centrifugal space are also provided.
  • the drum has a drum base, a drum middle part and a drum top part or a drum cover, which are arranged vertically one above the other. For such a relatively high drum can be realized with a smaller diameter compared to the height easier than just with a drum base and a drum lid, which are each formed conically.
  • drum shell is at least partially conical, that the drum center part is formed as an outer and inner cylindrical ring segment and that the drum base is at least partially formed conically sections.
  • FIG. 1 shows a section through a drum of a separator drum according to the invention, wherein different operating states are shown to the right and left of a rotation axis D;
  • FIG. 2 left of a rotation axis D, the schematic representations of a known separator drum, right, the schematic representation of a separator drum according to the invention.
  • Fig. 1 shows a rotatable drum 1 of a separator with a vertical axis of rotation D.
  • This drum forms with all other in operation with her rotating parts of a rotating / rotating system.
  • the drum 1 has a drum base 2, a drum middle part 3 and a drum top part or a drum cover 4, which are arranged vertically one above the other.
  • the drum base 2 is placed on an upper end of a vertically oriented drive spindle 5 and rotatably connected thereto.
  • the drum base 2 and the drive spindle 5 are screwed together with a screw 6.
  • a drive for the drive spindle is provided below the illustrated spindle range, but not shown here.
  • the drum middle part 3 is formed as a substantially cylindrical ring segment, which is placed on the drum base 2.
  • the drum base 2 extends radially outward from the drive spindle 5, wherein it widens conically in sections downwards and transitions into an axially upwardly extending, cylindrical section 7.
  • the drum base 2 and the drum middle part 3 are rotatably connected to each other.
  • the lower drum part 2 and the middle drum part 3 are screwed together at a thread 8, so that they overlap vertically in sections.
  • the drum middle part 3 engages with an axially projecting annular collar 9 inside the drum base 2, which counteracts widening of the drum middle part 3 during operation.
  • the drum cover 4 has a radially outer annular collar 10, with which it rests on a corresponding radially inner annular collar 1 1 of the drum center part 3.
  • a locking ring 12 presses the drum cover 4 from above against the drum middle part 3.
  • the locking ring 12 is screwed to a thread 13 with the drum middle part 3 or screwed here in this.
  • In the drum 1 extends vertically from above a vertically aligned inlet pipe 14.
  • the inlet pipe 14 does not rotate in operation with the drum 1 but stands still. Such stationary parts do not form part of the rotating system, to which all parts of the separator rotating with the drum belong.
  • the non-rotating inlet pipe 14 passes through a central opening of the drum cover 4 and opens vertically from above into a distributor shaft 15 of a distributor 1 6.
  • the distributor 16 is formed as a part rotating with the drum 1 during operation. Therefore, the inlet pipe 14 and the distributor shaft 15 are radially spaced from each other.
  • the distributor 1 6 has a conically widening distributor section 17 at its lower end.
  • this distributor section 17 one or more distribution channels 18 are formed.
  • the distribution channels 18 extend radially outward at an angle to the axis of rotation. At their outer ends they each have an outlet opening 19. In this way, a product supplied through the inlet pipe 14 into the rotating distributor shaft 15 and the distributor channels 18 is accelerated in the distributor to peripheral speed and then fed into the drum interior 20.
  • the drum interior 20 has in any case in its radially outer region on the contour of a double double hollow cone.
  • drum interior 20 initially widens conically vertically from bottom to top in a first section 20a, then tapers conically in a second section 20b, then widens conically again in a third section 20c and then again in a fourth section 20d conically tapered.
  • first and the second section 20a, b form a lower centrifugal space 21
  • the third and fourth sections 20c, 20d form an upper centrifugal space 22.
  • centrifugal chambers 21, 22 are radially separated from one another by a conical graduation plate 23.
  • a separation plate package 24, 25 is formed from stacking plates stacked one above the other, each separated axially from one another by a gap.
  • the axial spacing of the separating plates of each plate pact 24, 25 can be realized in any desired manner, for example by embossed tabs (not shown here).
  • a vertically lower piston slide 26 and a vertically arranged above auxiliary slide 27 are also arranged.
  • the piston slide 26 and the auxiliary slide 27 are each formed like a ring. They are each vertically movable in the drum interior 20 limited movable here, arranged.
  • the spool 26 has an outer conical portion 26a. At its outer edge, a sealing ring 26b is formed, which seals a gap between the spool 26 and the drum base 2.
  • the auxiliary slide 27, however, is double conical. It initially tapers towards the middle in a lower section 27a and then widens again in an upper section 27b.
  • the divider plate 23 extends radially to the auxiliary slide 27.
  • a sealing ring 28 is disposed between the divider plate 23 and the auxiliary slide 27.
  • the sealing ring 28 is used here in an annular groove 29 outside of the divider plate 23. In this way, and this is advantageous in order to sufficiently separate the centrifugal chambers 21, 22 in a suitable manner, liquid in this region is prevented from flowing from the lower centrifugal space 21 into the upper centrifugal space 22 in a simple manner.
  • a further sealing ring 30 is formed here.
  • the sealing ring 30 is inserted here into an axially open lower annular groove 31 of the auxiliary slide 27.
  • one or more further sealing rings 32, 33 may be provided on the outer circumference of the auxiliary slide 27 in order to also seal the gap between the drum 1 and the auxiliary slide 27.
  • the drum 1 has solids discharge openings 34, 35 at two radially spaced-apart regions. These are each circumferentially distributed in the drum shell - here on the one hand in the drum base 2 and the other in the drum middle part 3 -.
  • the lower Feststoffaustragsö réelleen 34 are in the range of the largest inner diameter of the lower centrifugal space 21 and the upper solids discharge openings 35 are in the range of the largest inner diameter of the upper centrifugal space 22nd
  • the auxiliary slide 27 closes the upper solids discharge openings 35 in an upper position. In this position, it bears against the drum cover 4. In addition, the auxiliary slide 27 releases the upper solids discharge openings 35 in a lower position. In this position, he is no longer at the bottom of the drum cover 4 accordingly.
  • the piston valve 26 closes in an upper position, the lower Feststoffaustragsö réelleen 34 and releases them in a lower position. Unlike a nozzle separator, where the outlet nozzles for a solid phase are always open, the outlet openings for the solid phase in a separator with a piston valve 26 are opened only temporarily.
  • actuating mechanism To move the internal piston slide 26 is an actuating mechanism. This is based here on a hydraulic action principle. To realize this, a pressure space 36 which can be acted upon by a fluid is formed below the lower piston slide 26.
  • the pressure chamber 36 can be acted upon by at least one line with a fluid, in particular a liquid such as water, which at the spindle by a at least one supply line 37 can be injected into a channel 38 in the drum 1, which opens into the pressure chamber 36.
  • the supply line 37 is a control device (not shown here) upstream for controlling and providing the liquid.
  • control means for supplying (hydraulic) liquid in a drum 1 for moving a piston valve 26 are known per se.
  • the liquid By discharging the liquid from the pressure chamber 36, for example by means of switching a valve 39 on the channel 38, however, the liquid can be discharged from the pressure chamber 36, so that the spool 26 due to the pressure acting on it from above in the lower centrifugal space 21st moved to the vertical lower position (this position is shown on the left of the axis of rotation).
  • the outlet opening (s) 19 from the distributor channels are located below one or possibly a plurality of rising channels 40 in the lower separator plate package 24, which is arranged in the lower centrifugal chamber 21.
  • the at least one riser channel 40 is located radially in the lower separator plate package 24, preferably relatively far outward, in particular in the radially outer half of the lower separator plate assembly 24.
  • a flowable product that enters through the riser channel 40 into the separator plate package 24 in the lower centrifugal space 21 is clarified in this separator plate package 24 of solids. Solids flow outward from the separator plate package 24 and collect there in the region of the largest inner diameter. The clarified liquid, however, flows radially inwards. The solids collecting outside in the lower centrifugal space 21 are - as explained above - emptied from time to time. The clarified liquid, which flows radially inward, is guided vertically upwards in an outside axially on the distributor shaft 16 (ie inside the drum interior 20) axially extending channel 49 up to the dividing splitter 23, which is externally mounted on the distributor shaft 15 in a rotationally fixed manner is.
  • the division divider 23 is provided with one or more distribution channels 41. These distribution channels 41 are directed radially outwards and guide the clarified phase from the lower centrifugal space into the upper centrifugal space 22.
  • the distribution channels 41 have outlet openings 42. These outlet openings 42 are aligned with one or more riser channels 43 in the upper separator plate package 25, which is arranged in the upper centrifugal space 22.
  • the position of the riser channels 43 in the upper separator plate package 25 can be selected independently of the position of the riser channels 40 in the separator plate package 24 in the lower centrifugal space 21. This position is a function of the liquid phases of different density (e.g., L1 and L2) to be separated.
  • the clarified liquid is discharged either through a single paring disc (not shown here).
  • the upper centrifugal chamber would be designed exclusively as a clarifier.
  • the clarified liquid in the upper centrifugal space is not only clarified but also separated into two phases of different density (e.g., skimmed milk and cream). These two separate liquid phases are guided out of the drum 1 by two liquid discharges.
  • These liquid discharges are preferably in the form of peeling disks 44, 45, which are arranged vertically one above the other in peeling chambers 46, 47 within a drum cover 50 on the drum upper part 4.
  • the one paring disc 44 (Lower here) is used to derive the lighter liquid phase L1, which is radially further into one of the peeling chambers 46 is passed and the other peeling disk 45 (here the upper) for the derivation of the heavier liquid phase L2. This is withdrawn at a larger radius, for example via an outer peripheral edge of a divider plate 48 through at least one channel 51 and passed into the upper peeling chamber 47.
  • the peeling discs 46, 47 operate on the principle of operation of centripetal pumps. They do not rotate with the drum 1 but are attached to the inlet pipe 14. These parts are thus in Fig. 1, the parts that do not belong to the rotating system. Furthermore, by definition, the rotating drive spindle 5 is not added to this rotating system.
  • the centrifuged material is clarified by solids.
  • the product clarified in this way flows into the upper centrifugal space 22.
  • the upper centrifugal space 22 a further residual clarification of remaining solids is carried out and the two liquid phases of different specific gravity are separated from one another (in the case of milk in cream and skimmed milk).
  • the liquid phase L1 having the lower specific gravity - in the case of milk of the cream - is directed inwardly into the first peeling chamber 46 and from there with the first peeling disk 44 out of the rotating system.
  • the liquid phase L2 having the higher specific gravity-in the case of milk, the skim milk-on the other hand, is conducted out of the rotating system through the upper peeling chamber 47 with the second peeling disk 45.
  • the separation plates of both plate packages 24, 25 each include an angle - see also Fig. 2 right of the axis of rotation - with the axis of rotation D. They also have one (same here) radius r2).
  • the angle of the inner conicity of the centrifugal space corresponds to ß.
  • the height h of the rotary system is the maximum height from the deepest part of the rotating drum base 2 to the highest point of the rotating drum cover 4 (including its drum cover 50).
  • the largest diameter is the largest diameter d of the drum 1, which here corresponds to the diameter of the drum central part 3 (see Figure 2).
  • the maximum radius of the centrifugal chambers is equal to r1.
  • the "double double hollow cone” proves to be very advantageous Embodiment of the drum 1 as a “double double hollow cone” with two superposed centrifugal chambers 21, 22, within a single drum 1, which are preferably connected only by a line in the divider 23 for the transfer of clarified phase from the lower to the upper centrifugal chamber 22, wider separating plate (with a larger radius r 2 ) can be used than in a drum of the same height and radius (left-hand part of FIG.
  • Characteristic in this construction with two superimposed centrifugal chambers 21, 22 within a single drum 1 is that the mass moment of inertia JQ is greater about a transverse axis Q extending through the center of gravity S of the rotating system perpendicular to the axis of rotation D than the mass moment of inertia J D um the axis of rotation D (see Fig.2).
  • a total of 22 relatively large clearance surface relative to the height and diameter of the drum interior can be realized. This is achieved by the relatively high height h of the drum 1 compared to the diameter d.

Abstract

L'invention concerne un séparateur avec un système rotatif avec a) un tambour rotatif en fonctionnement, avec un axe de rotation vertical (D), b) qui présente un espace interne de tambour (20), c) qui est divisé en une chambre de centrifugation à cône double inférieure (21) et une chambre de centrifugation à cône double supérieure (22), d) les deux chambres de centrifugation (21, 22) présentant respectivement des ouvertures de déversement de matières solides (34, 35), qui peuvent être libérées et fermées dans la chambre de centrifugation inférieure (21) par un clapet à boisseau (26) et dans la chambre de centrifugation supérieure (22) par un coulisseau auxiliaire (27), e) le moment d'inertie de masse (JQ) du système rotatif (1) autour d'un axe transversal (Q), perpendiculaire à l'axe de rotation vertical (D), s'étendant à travers le centre de masse (S) du système rotatif du tambour (1), étant supérieur au moment d'inertie de masse (JD) du système rotatif (1) autour de l'axe de rotation vertical (D) du système rotatif.
EP17705880.7A 2016-03-08 2017-02-17 Séparateur Active EP3426405B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202016101272.4U DE202016101272U1 (de) 2016-03-08 2016-03-08 Separator
PCT/EP2017/053624 WO2017153150A1 (fr) 2016-03-08 2017-02-17 Séparateur

Publications (2)

Publication Number Publication Date
EP3426405A1 true EP3426405A1 (fr) 2019-01-16
EP3426405B1 EP3426405B1 (fr) 2020-04-22

Family

ID=58057139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17705880.7A Active EP3426405B1 (fr) 2016-03-08 2017-02-17 Séparateur

Country Status (6)

Country Link
US (1) US10894259B2 (fr)
EP (1) EP3426405B1 (fr)
JP (1) JP6868638B2 (fr)
CN (1) CN108778516B (fr)
DE (1) DE202016101272U1 (fr)
WO (1) WO2017153150A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016101272U1 (de) * 2016-03-08 2017-06-09 Gea Mechanical Equipment Gmbh Separator
CN109082523B (zh) * 2018-09-28 2023-07-25 中国恩菲工程技术有限公司 离心反萃取设备及反萃取钪的方法
US10654050B1 (en) 2019-05-21 2020-05-19 Empirical Innovations, Inc. Centrifugal separators and separation methods employing multiple pistons and facilitating intermediate material ejection
CN114173933A (zh) * 2019-07-26 2022-03-11 利乐拉瓦尔集团及财务有限公司 离心分离器
DE102020128748A1 (de) * 2020-11-02 2022-05-05 Gea Westfalia Separator Group Gmbh Separator
CN113351380B (zh) * 2021-06-18 2022-01-04 长春市吉达自动化系统有限公司 一种玉米淀粉的智能生产系统
DE102022108491A1 (de) 2022-04-07 2023-10-12 Gea Westfalia Separator Group Gmbh Separator

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Also Published As

Publication number Publication date
DE202016101272U1 (de) 2017-06-09
WO2017153150A1 (fr) 2017-09-14
JP6868638B2 (ja) 2021-05-12
US10894259B2 (en) 2021-01-19
JP2019507680A (ja) 2019-03-22
CN108778516B (zh) 2021-03-30
EP3426405B1 (fr) 2020-04-22
CN108778516A (zh) 2018-11-09
US20190046996A1 (en) 2019-02-14

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