EP1024291A2 - Mehrstufige Pumpe zur Förderung von halbfestem Material - Google Patents

Mehrstufige Pumpe zur Förderung von halbfestem Material Download PDF

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Publication number
EP1024291A2
EP1024291A2 EP00200272A EP00200272A EP1024291A2 EP 1024291 A2 EP1024291 A2 EP 1024291A2 EP 00200272 A EP00200272 A EP 00200272A EP 00200272 A EP00200272 A EP 00200272A EP 1024291 A2 EP1024291 A2 EP 1024291A2
Authority
EP
European Patent Office
Prior art keywords
impeller
pump
feeder screw
impellers
chamber
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.)
Withdrawn
Application number
EP00200272A
Other languages
English (en)
French (fr)
Other versions
EP1024291A3 (de
Inventor
Antonio Velo
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.)
Velo SpA
Original Assignee
Velo SpA
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 Velo SpA filed Critical Velo SpA
Publication of EP1024291A2 publication Critical patent/EP1024291A2/de
Publication of EP1024291A3 publication Critical patent/EP1024291A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous

Definitions

  • the present invention relates to a pump intended to supply composite materials, namely materials wherein solid bodies are dispersed in a liquid so as to form a non-homogeneous composition, which in the remainder of this description and in the claims that follow will be referred to in short as "semi-solid material".
  • An example of such materials is that formed by the must and the grapes pressed during the course of the wine production process.
  • the must together with the pressed grapes is poured from above into a hopper which has, at the bottom, a feeder screw that pushes the composite material into a chamber where an impeller is situated; the latter is mounted on the same shaft as the feeder screw and has a particular biconvex shape.
  • the material to be pumped reaches the impeller, advancing in an axial direction with respect thereto and is then pushed radially, after rotation through about 270°, towards a delivery header located on the upper cover of the casing inside which the impeller is housed.
  • a delivery header located on the upper cover of the casing inside which the impeller is housed.
  • an air tank intended to absorb the pressure oscillations in the pump delivery.
  • the said pump has the advantage that it is compact and efficient because the feeder screw and the impeller are keyed onto the same shaft so that it may be favourably used in numerous practical applications.
  • the object of the present invention is that of improving this situation; said object is achieved by a pump, whose characterising features are set out in the claims appended to this description.
  • the pump of this of embodiment is denoted in its entirety by 1; it comprises the usual hopper 2 with associated feeder screw 3 for supplying the material into a casing 4, which is closed at the top by a cover 5 and which has internally two impellers 6 and 7 of the type already described in the abovementioned utility model, namely having a biconvex shape.
  • a partition 9 is arranged between the two impellers 6 and 7 and divides the inside of the casing 4 into two chambers 10 and 11, which have a substantially cylindrical shape and inside which the two impellers 6 and 7 are respectively housed; the two aforementioned chambers communicate with each other in the upper zone where there is a through-opening 12 between the partition 9 and the cover 5 of the casing.
  • a tank 13 which is known per se and fixed to the cover 5 is located above the chamber 10, while a delivery header 14 of the pump is arranged above the chamber 11; the said header is oriented so as to assist the action of the impellers produced by the direction of their rotation.
  • the header is substantially aligned with the direction of the speed of the outflowing semi-solid material, pushed by the impellers at the end of the rotation through about 270°, as mentioned above.
  • each of the impellers 6 and 7 has respectively associated with it movable flaps 15 and 16 pivoting about a common hinging pin 17 and having an edge kept in contact with the surface of the impellers by means of a spring 18 which exerts elastically a torque on this pin.
  • the inside of the casing 4 and the hopper 2 are connected by a duct inside which the downstream end of the feeder screw 3 is located; the duct 20 contains a baffle plate 21 which is configured substantially in the form of a half-moon and which defines, together with the internal wall of the said duct, an opening 22 for allowing the material supplied by the feeder screw to pass through.
  • the partition 9 which divides the two chambers 10 and 11 is also configured in a manner similar to that of the baffle plate 21 in the sense that it is also shaped so as to define with the internal wall of the casing 4 a second opening 23 for allowing the material to pass from the first chamber to the second chamber.
  • the pump is completed by a gearmotor 25 which performs rotation of the shaft 8 and a series of wheels 26 that facilitate movement of the pump which, for this purpose, is also provided with an arm 27 acting as a handle.
  • the normal operating mode i.e. excluding the initial or final transients of the pump described hitherto, takes place as follows.
  • the must and the marc which is situated inside the hopper 2 is fed forwards by the feeder screw 3 towards the duct 20 and from here, passing through the opening 22 in the baffle plate 21, enters into the first chamber 10.
  • each impeller As mentioned, the material taken up by each impeller is pushed upwards inside the respective chamber 10 and 11; from the first of these chambers it is also sucked, across the through-opening 12, into the second chamber so as to emerge, together with the material processed by the impeller 7, from the header 14.
  • the tank 13 acts as a compensator for the (sinusoidal-type) pressure oscillations which occur inside the casing 4 as a result of the action of each impeller; in this connection it should be pointed out that, even though some marc may fill the bottom part of the tank, the latter essentially acts as a storage chamber which communicates with the chamber 10 and inside which the stored air may be compressed or expanded according to the circumstances.
  • the pump according to the present invention demonstrated an excellent efficiency; indeed it retained the same advantages of compactness and simplicity associated with the version described in the prior utility model (there is only a slight axial elongation due to the second impeller), while achieving, however, a surprisingly favourable performance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Static Random-Access Memory (AREA)
  • Liquid Deposition Of Substances Of Which Semiconductor Devices Are Composed (AREA)
EP00200272A 1999-01-29 2000-01-26 Mehrstufige Pumpe zur Förderung von halbfestem Material Withdrawn EP1024291A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1999TV000005U IT248089Y1 (it) 1999-01-29 1999-01-29 Pompa multistadio per l'alimentazione di materiale semi-solido.
ITTV990005U 1999-01-29

Publications (2)

Publication Number Publication Date
EP1024291A2 true EP1024291A2 (de) 2000-08-02
EP1024291A3 EP1024291A3 (de) 2000-11-08

Family

ID=11420532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00200272A Withdrawn EP1024291A3 (de) 1999-01-29 2000-01-26 Mehrstufige Pumpe zur Förderung von halbfestem Material

Country Status (2)

Country Link
EP (1) EP1024291A3 (de)
IT (1) IT248089Y1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2188968C1 (ru) * 2001-04-26 2002-09-10 Бритвин Лев Николаевич Система подачи материалов высокой вязкости
CN111608918A (zh) * 2020-05-28 2020-09-01 陕西省环境保护公司 甲醇污水处理中污泥泵防堵塞装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1311627B1 (it) 1999-01-18 2002-03-14 Benetton Spa Struttura di supporto, particolarmente per calzature.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2042641A (en) * 1934-11-13 1936-06-02 Frank F Victoria Pulp and liquid pump
US4141510A (en) * 1977-06-15 1979-02-27 Arthur Smith Material reduction means for pumps
IT229226Y1 (it) * 1992-03-12 1998-07-02 Velo Spa Apparecchiatura per il travaso di prodotti semisolidi quali ad esempio in particolare vinacce mosti e simili

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2188968C1 (ru) * 2001-04-26 2002-09-10 Бритвин Лев Николаевич Система подачи материалов высокой вязкости
CN111608918A (zh) * 2020-05-28 2020-09-01 陕西省环境保护公司 甲醇污水处理中污泥泵防堵塞装置

Also Published As

Publication number Publication date
ITTV990005U1 (it) 2000-07-29
IT248089Y1 (it) 2002-12-10
EP1024291A3 (de) 2000-11-08

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