EP0682751B1 - Ensemble pompe a vide - Google Patents

Ensemble pompe a vide Download PDF

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Publication number
EP0682751B1
EP0682751B1 EP94903814A EP94903814A EP0682751B1 EP 0682751 B1 EP0682751 B1 EP 0682751B1 EP 94903814 A EP94903814 A EP 94903814A EP 94903814 A EP94903814 A EP 94903814A EP 0682751 B1 EP0682751 B1 EP 0682751B1
Authority
EP
European Patent Office
Prior art keywords
ejector
compressed air
valve
vacuum pump
pressure
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
EP94903814A
Other languages
German (de)
English (en)
Other versions
EP0682751A1 (fr
Inventor
Dieter Bergemann
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.)
Putzmeister Concrete Pumps GmbH
Original Assignee
Putzmeister AG
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 Putzmeister AG filed Critical Putzmeister AG
Publication of EP0682751A1 publication Critical patent/EP0682751A1/fr
Application granted granted Critical
Publication of EP0682751B1 publication Critical patent/EP0682751B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • F04B43/1253—Machines, pumps, or pumping installations having flexible working members having peristaltic action by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/12—Machines, pumps, or pumping installations having flexible working members having peristaltic action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
    • B28C5/4203—Details; Accessories
    • B28C5/4234—Charge or discharge systems therefor
    • B28C5/4244—Discharging; Concrete conveyor means, chutes or spouts therefor
    • B28C5/4258—Discharging; Concrete conveyor means, chutes or spouts therefor using pumps or transporting screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F04F5/20—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type

Definitions

  • the invention relates to a vacuum pump device for evacuating the housing of a peristaltic pump that can be used as a thick matter feed pump and is installed on a road vehicle, with a device for generating compressed air for the operation of facilities of the road vehicle, e.g. a compressed air brake system of the vehicle and / or other compressor that can be carried on or installed on the vehicle, and with a vacuum pump unit, to the suction side of which the housing of the peristaltic pump is connected as a recipient.
  • a vacuum pump device for evacuating the housing of a peristaltic pump that can be used as a thick matter feed pump and is installed on a road vehicle
  • a device for generating compressed air for the operation of facilities of the road vehicle e.g. a compressed air brake system of the vehicle and / or other compressor that can be carried on or installed on the vehicle
  • a vacuum pump unit to the suction side of which the housing of the peristaltic pump is connected as a recipient.
  • vacuum pump devices The purpose of such vacuum pump devices is to partially accelerate the regression of the circular cross-sectional shape of the pump hose after it has been pressed against a housing wall by the squeeze rollers of the pump rotor and thereby squeezed together, so that the maximum suction and delivery cross-section is as fast as possible to achieve the appropriate shape of the hose again (DE 36 07 836 A1).
  • the pump unit to which the housing of the peristaltic pump is connected as a recipient, is usually designed as a positive displacement pump, for example as a capsule pump, which has a pump rotor, for the drive of which either its own - electric or hydraulic drive motor or a gear that can be engaged and disengaged is provided, via which a drive coupling of the pump rotor to a power take-off of the vehicle engine is possible if necessary.
  • a positive displacement pump for example as a capsule pump, which has a pump rotor, for the drive of which either its own - electric or hydraulic drive motor or a gear that can be engaged and disengaged is provided, via which a drive coupling of the pump rotor to a power take-off of the vehicle engine is possible if necessary.
  • the vacuum pump unit is designed as an ejector working on the principle of the jet pump, which is preferably designed as an air jet pump, the propellant gas jet of which can be branched off from the compressed air provided by the compressor.
  • the ejector provided as a vacuum pump unit which, in a design and functional arrangement known per se, consists of a driving nozzle that can be connected to the pressure outlet of the compressor, a collecting nozzle that forms the outlet of the ejector, and a mouth opening of the driving and the housing containing the catch nozzle, to which the housing of the peristaltic pump to be evacuated can be connected as a recipient, is a structurally very simple functional element which can be manufactured at a correspondingly low cost or is commercially available and, since it contains no moving parts, is not subject to any significant wear and tear and therefore also requires no maintenance work.
  • a non-return valve As a valve responding to the pressure difference between the recipient and the ejector, a non-return valve is suitable which, in a simple design of the vacuum pump device, is designed as a flap valve which responds to very small values of the pressure difference of only a few millibars and can be switched reliably between its functional positions.
  • an overflow valve controlled by the outlet pressure of the compressed air source is provided between the outlet of the compressed air source and the compressed air inlet of the air jet ejector, which blocks the compressed air flow to the ejector when the outlet pressure of the compressed air source drops and / or falls below an adjustable or fixed predetermined threshold value
  • the air flow output of the ejector against the ambient atmosphere by means of a response to the pressure difference between the ejector output and the ambient atmosphere Valve can be shut off, which is controlled into its open position by a relatively higher pressure at the outlet of the ejector than the ambient pressure and reaches its blocking position when the pressure difference falls below a minimum value, also possible in the event of a failure of the compressed air source or a pressure drop at its outlet maintain a minimum vacuum - at least for a limited time - in the housing of the peristaltic pump
  • This pressure-sensitive valve which conveys a shut-off of the ejector on the outlet side from the ambient pressure, and thus, if the ejector is shut off on the inlet side by a response of the overflow valve, also shuts off the housing of the peristaltic pump against the ambient atmosphere, can be designed as a simple flutter valve.
  • the housing of the peristaltic pump can be ventilated via the ejector if necessary, whereby the housing of the peristaltic pump is ventilated when the vacuum pump device is switched off.
  • this can also be achieved by providing a 3/3-way valve directly upstream of the housing of the peristaltic pump, which has a first flow position in which the housing of the peristaltic pump forming the recipient with the The vacuum chamber of the ejector is connected and at the same time is sealed off from the surrounding atmosphere, via a blocking position in which both the recipient and the negative pressure chamber of the ejector are blocked from the surrounding atmosphere, and can be switched over to a second flow position - an aeration position - in which the recipient is connected to the Ambient atmosphere is in communicating connection, but is blocked against the negative pressure chamber of the ejector, which in this configuration remains in communicating connection with the ambient atmosphere through the capture nozzle.
  • Such 3/3-way valves can be designed as simple, manually operable 3-way valves with L-plug.
  • Low-noise operation of the vacuum pump device can be achieved in a simple manner by means of a conventional type of silencer connected downstream of its ejector.
  • the vacuum pump device serves to generate a negative pressure in the housing 11 of a thick matter feed pump designed as a peristaltic pump, generally designated 12, by means of which the pump hose 13 relaxes on both sides of its length during pump operation promoted squeezing point and thereby the inflow of material to be pumped into the pump 12 is to be facilitated.
  • an essentially circular disk-shaped rotor 16 is mounted rotatably about its central axis 14, which rotor e.g. Via the power take-off of the engine of a construction vehicle, not shown, can be driven in rotation, on which the peristaltic pump together with other devices, e.g. a concrete mixer and / or a placing boom for concrete is mounted.
  • Two pinch rollers are freely rotatably mounted on the rotor about axes of rotation 19 and 21 which are parallel to the central axis 14 of the pump 12 and are arranged at the same distance from the central axis 14 at an azimuthal distance of 180 ° on the rotor.
  • a support wall 24 Arranged within the housing 11 of the pump 12 is a support wall 24, which extends between the pump inlet 22 and the pump outlet 23 and coaxially surrounds the rotor on a 180 ° circumferential area, which is fastened between the side walls of the pump housing 11 and has the shape of a half cylinder jacket .
  • the pump hose is between the support wall 24 and the two pinch rollers 17 and 18, which alternately on the inside of the support wall on the Attack the hose 13, squeezed, the pinch point 27 migrating from the pump inlet 22 over the inner circumferential region of the support wall 24 to the pump outlet 23 and the material to be conveyed thereby being pushed through the pump hose 13.
  • an air jet ejector As a vacuum pump unit, by means of which the housing 11 of the peristaltic pump 12 partially, ie can be evacuated to an absolute value of the pressure of approximately 0.2 bar, an air jet ejector, designated overall by 28, is provided, which flows through a compressed air jet, which is represented by a flow arrow 31, as a propellant jet, input-side propelling nozzle 32 and an exit-side catch nozzle 33 as well as a housing 29 with a suction connection piece 38, which delimits a vacuum chamber 37 and contains the orifices 34 and 36 of the propulsion nozzle 32 and the catch nozzle 33, seen in the flow direction of the propulsion jet 31, adjacent to one another Via an inlet check valve 39 and a 3-way valve 41, the chamber 42 of the peristaltic pump 12 delimited by the housing 11 of the peristaltic pump 12 can be connected as a recipient.
  • the compressed air flow passed through the ejector 28 in the evacuation mode of the ejector 28 and the pump chamber 42 connected to its suction port 38 is generated by a compressor 43 which is provided as an on-board unit of the vehicle and is also used for supplying compressed air to the compressed air braking system of the vehicle.
  • This compressor 43 is driven by the engine of the vehicle, while the peristaltic pump 12 can be driven via a power take-off of the drive unit of the vehicle that can be switched on and off, not shown.
  • a pressure-controlled overflow valve 47 is switched, which releases the passage of a compressed air flow from the compressed air outlet 44 of the compressor 43 to the inlet 46 of the ejector 28, so as long as the output pressure of the compressor is greater than a defined threshold value of, for example, 8 bar, but blocks this flow path as soon as the output pressure of the compressor 43 drops below this threshold value.
  • the blowing air jet 31 emerging at high speed at the inner opening 34 of the driving nozzle which, viewed in the direction of flow of the driving jet 31, has a continuously tapering flow cross-section, entrains air in the vacuum chamber 37 of the ejector 28 into the catching nozzle 33 of the ejector 28 , which is transported together with the propellant air flow 31 to the compressed air outlet of the ejector 28 formed by the outer opening 48 of the trap nozzle, where, due to a design of the trap nozzle which widens in the flow direction, the speed of the emerging air flow is significantly reduced.
  • the catch nozzle 33 has a flow cross-section which initially tapered and then widened again towards the outer mouth opening 48, which in the region of outer mouth opening 48 is significantly larger than that Clear cross-section of the compressor-side, outer mouth opening 46 of the driving nozzle in order to achieve a clear calming of the air flow emerging at the outlet 48 of the ejector 28, which is passed through a silencer 49 connected downstream of the ejector 28 to reduce the operating noise.
  • the flap valve 39 which comes into its blocking position when the propellant air jet is exposed and the pressure increase in the vacuum chamber 37 of the ejector connected with it, provided that the 3-way valve is in its - shown - evacuation position, the vacuum in the connected recipient is maintained.
  • the 3-way valve 41 is designed as a valve with a rotatable L-plug, which conveys the function of a 3/3-way valve which, from a first - shown - flow position, in which the pump housing 11 can be evacuated, Via a blocking position, in which the pump housing 11 is blocked against both the ambient atmosphere and the ejector 28, can be switched into a second flow position, the ventilation position, in which the evacuable chamber 42 of the peristaltic pump 12 via the tap 41 directly with the ambient atmosphere communicates.
  • a vacuum pump device 10 'suitable for evacuating the housing chamber 42 accommodating the rotor 16 and the delivery hose 13 of a peristaltic pump is assumed that its functional elements - compressor 43, overflow valve 47, 3-way -Cock 41, ejector 28, flutter valve 39 and muffler 49 with the correspondingly designated functional elements of the embodiment shown in FIG. 1 are identical.
  • the suction port 38 of the ejector 28 is connected directly to the evacuable chamber 42 of the housing 11 of the peristaltic pump 12; the 3-way valve 41 is between the overflow valve 47 and the Ejector 28 is switched, and the flutter valve 39, which is used here as an output check valve of the ejector 28, is connected between the ejector 28 and the silencer 49.
  • the recipient 42 is ventilated via the 3-way valve 41 and the drive nozzle 32 of the ejector 28, which - when the delivery valve 39 is closed - can be connected to the ambient atmosphere by means of the 3-way valve.
  • the outlet pressure of the compressor 43 is between 6 and 8 bar
  • the compressed air flow used as the driving jet of the ejector 28 based on normal conditions (pressure 1 bar and air temperature by 20 °) has an amount of 200 l / min.
  • the amount of air that can be conveyed from the recipient 42 in this configuration of the vacuum pumping devices 10, 10 'at the start of the evacuation operation is then approx. 150 l / min, a negative pressure being established in the recipient 42 in the stationary operating state of the pump device 10, 10 ′, which has an absolute value of approx. 0.2 to 0.3 bar.
  • the vacuum pump unit 28 is the housing 11 of the hose squeeze pump 12 on the suction side thereof Recipient is connected as an ejector working on the principle of the steam jet pump, the motive air jet of which can be branched off from the compressed air generated by the compressor 43 of the vehicle brake system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structural Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

Dans un ensemble pompe à vide pour faire le vide dans le carter (11) d'une pompe péristaltique (12) qui est montée sur un véhicule routier avec un système de freinage à air comprimé et peut être utilisée comme pompe de refoulement de béton, l'ensemble pompe à vide (28), au côté aspiration duquel est relié comme récipient le carter (11) de la pompe péristaltique (12), se présente comme un éjecteur travaillant selon le principe de la pompe à jet d'air, dont le jet d'air peut être dérivé de l'air comprimé produit par le compresseur (43) du système de freinage du véhicule.

Claims (10)

  1. Ensemble pompe à vide pour l'évacuation du carter d'une pompe péristaltique (12) utilisable comme pompe à liquides épais, notamment comme pompe à béton, installée sur un véhicule routier, comprenant un compresseur (43) nécessaire pour la production d'air comprimé pour le fonctionnement de dispositifs du véhicule routier, par exemple une installation de frein à air comprimé du véhicule et/ou d'autres appareils pouvant être embarqués ou installés à bord du véhicule, et un groupe motopompe à vide (28) au côté aspiration duquel le carter (11) de la pompe péristaltique (12) est raccordé en tant que récipient, caractérisé en ce que le groupe motopompe à vide (28) est réalisé sous la forme d'un éjecteur fonctionnant d'après le principe de la pompe à jet dont le jet de propulsion peut être dérivé de l'air comprimé produit au moyen du compresseur (43).
  2. Ensemble pompe à vide selon la revendication 1, caractérisé en ce qu'entre le raccord d'aspiration (38) de la trompe à l'air (28) et le carter (11) de la pompe péristaltique (12) est intercalée une soupape (39) répondant à la dépression régnant dans le récipient, qui peut être amenée dans sa position d'ouverture par une pression relativement plus élevée dans le carter (11) de la pompe que dans la chambre de dépression (37) de l'éjecteur (28) et qui peut être commutée dans sa position de blocage par une pression relativement plus élevée dans la chambre de dépression (37) de l'éjecteur (28).
  3. Ensemble pompe à vide selon la revendication 2, caractérisé en ce que la soupape (39) répondant à la dépression dans le récipient (11, 42) est conformée en clapet battant.
  4. Ensemble pompe à vide selon l'une des revendications 1 à 3, caractérisé en ce qu'entre la sortie (44) de la source d'air comprimé (43) et l'entrée d'air comprimé (46) de la trompe à l'air (28) est prévue une soupape de décharge (47) commandée par la pression de sortie de la source d'air comprimé (43), qui est amenée, à partir d'une pression de sortie minimale de la source d'air comprimé, dans une position d'ouverture correspondant à une section de passage maximale, et qui passe dans sa position de blocage lorsque la pression de sortie de la source d'air comprimé (43) descend en dessous d'une valeur seuil réglable ou fixe prédéterminée.
  5. Ensemble pompe à vide selon la revendication 1 ou selon la revendication 1 en combinaison avec la revendication 4, caractérisé en ce que la sortie de courant d'air (48) de la trompe à l'air (28) peut être bloquée par rapport à l'atmosphère environnante au moyen d'une soupape (39) répondant à la différence de pression entre la sortie (48) de l'éjecteur et l'atmosphère environnante, qui est amenée dans sa position d'ouverture par une pression relativement plus élevée à la sortie de l'éjecteur (28) que la pression environnante et amenée dans sa position de blocage lorsque la pression environnante est plus élevée que la pression à la sortie (48) de l'éjecteur (28).
  6. Ensemble pompe à vide selon la revendication 5, caractérisé en ce que la soupape (39) sensible à la différence de pression entre la pression environnante et la pression régnant dans la chambre de dépression (37) de l'éjecteur (28) est réalisée sous la forme d'un clapet battant.
  7. Ensemble pompe à vide selon la revendication 5 ou la revendication 6, caractérisé en ce qu'il comprend un distributeur à 3/3 voies (41) monté directement en amont de l'entrée d'air comprimé (46) de l'éjecteur (28), qui peut être commuté, à partir d'une première position de passage dans laquelle un chemin d'écoulement d'air comprimé conduisant de la source d'air comprimé (43) à la tuyère de propulsion (32) de l'éjecteur (28) est libéré, alors que la tubulure de raccordement de la tuyère de propulsion de l'éjecteur (28) est bloquée par rapport à l'atmosphère environnante, dans une seconde position de passage dans laquelle la tubulure de raccordement de la tuyère de propulsion communique avec l'atmosphère environnante et est bloquée par rapport à la sortie d'air comprimé (44) de la source d'air comprimé (43), en passant par une position de blocage dans laquelle la tubulure de raccordement de la tuyère de propulsion est bloquée aussi bien par rapport à la sortie d'air comprimé (44) de la source d'air comprimé (43) que par rapport à l'atmosphère environnante.
  8. Ensemble pompe à vide selon l'une des revendications 1 à 4, caractérisé en ce qu'il comprend un distributeur à 3/3 voies (41) monté directement en amont du carter (11) de la pompe péristaltique (12), qui peut être commuté, à partir d'une première position de passage dans laquelle le récipient (42) communique avec la chambre de dépression (37) de l'éjecteur (28) tout en étant bloqué par rapport à l'atmosphère environnante et en passant par une position de blocage dans laquelle le récipient (42) aussi bien que la chambre de dépression (37) de l'éjecteur (28) sont bloqués par rapport à l'atmosphère environnante, dans une seconde position de passage - une position de ventilation - dans laquelle le récipient (42) communique avec l'atmosphère environnante.
  9. Ensemble pompe à vide selon la revendication 7 ou 8, caractérisé en ce que le distributeur à 3/3 voies (41) est réalisé sous la forme d'un robinet à trois voies avec boisseau en L qui peut être actionné de préférence à la main.
  10. Ensemble pompe à vide selon l'une des revendications 1 à 9, caractérisé en ce qu'un silencieux (49) est monté en aval de l'éjecteur (28).
EP94903814A 1993-02-05 1993-12-17 Ensemble pompe a vide Expired - Lifetime EP0682751B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4303319A DE4303319A1 (de) 1993-02-05 1993-02-05 Vakuum-Pumpeinrichtung
DE4303319 1993-02-05
PCT/EP1993/003589 WO1994018453A1 (fr) 1993-02-05 1993-12-17 Ensemble pompe a vide

Publications (2)

Publication Number Publication Date
EP0682751A1 EP0682751A1 (fr) 1995-11-22
EP0682751B1 true EP0682751B1 (fr) 1997-08-06

Family

ID=6479711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94903814A Expired - Lifetime EP0682751B1 (fr) 1993-02-05 1993-12-17 Ensemble pompe a vide

Country Status (6)

Country Link
EP (1) EP0682751B1 (fr)
JP (1) JPH08506398A (fr)
KR (1) KR100307938B1 (fr)
DE (2) DE4303319A1 (fr)
ES (1) ES2107803T3 (fr)
WO (1) WO1994018453A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6857277B2 (en) 2000-09-01 2005-02-22 Katsuzo Somura Process and equipment for manufacturing clear, solid ice of spherical and other shapes
DE20205068U1 (de) 2002-03-30 2002-08-29 Festo Ag & Co Druckluft-Schalldämpfer
DE10357320A1 (de) * 2003-12-05 2005-06-30 Crane Process Flow Technologies Gmbh Schlauchpumpe mit Vorrichtung zur Vakuumerzeugung
JP4854302B2 (ja) * 2004-02-17 2012-01-18 パナソニック株式会社 可燃性冷媒及び冷凍機油処理装置及び処理方法
NL2000167C2 (nl) * 2006-07-28 2008-01-29 Bredel Hose Pumps B V Peristaltische pomp.
JP4821926B2 (ja) * 2010-11-29 2011-11-24 ソニー株式会社 信号処理装置及び信号処理方法
JP2015132180A (ja) * 2014-01-10 2015-07-23 東亜工業株式会社 チューブポンプ
DE102017203877A1 (de) * 2017-03-09 2018-09-13 Polytec Plastics Germany Gmbh & Co. Kg Geschaltete Saugstrahlpumpe
JP7372869B2 (ja) * 2020-03-31 2023-11-01 新明和工業株式会社 吸引車

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
GB669809A (en) * 1949-09-15 1952-04-09 Glacier Co Ltd Improvements in or relating to pumps
US3421447A (en) * 1966-10-26 1969-01-14 Challenge Cook Bros Inc Fluid pump
FR2239362A1 (en) * 1973-08-03 1975-02-28 Eta Sa Vehicle driven by I.C. engine - exhaust pipe is connected to tank to inspire fluid using exhaust vacuum
DE3431188A1 (de) * 1984-08-24 1986-03-06 Linnhoff & Thesenfitz Maschinen- und Anlagenbau GmbH, 8754 Großostheim Rotationsschlauchpumpe
DE3607836A1 (de) * 1986-03-10 1987-09-17 Wibau Ag Transport-, misch und foerderkombination zur herstellung und aufrechterhaltung der mischqualitaet breiiger massen, insbesondere zementbeton
DE3703124A1 (de) * 1987-02-03 1988-08-11 Manfred Streicher Schlauchpumpe
US5007803A (en) * 1989-09-28 1991-04-16 Global Pumps, Inc. Air operated vacuum pump

Also Published As

Publication number Publication date
DE4303319A1 (de) 1994-08-11
WO1994018453A1 (fr) 1994-08-18
EP0682751A1 (fr) 1995-11-22
DE59307092D1 (de) 1997-09-11
JPH08506398A (ja) 1996-07-09
KR960700413A (ko) 1996-01-20
KR100307938B1 (ko) 2001-11-30
ES2107803T3 (es) 1997-12-01

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