EP2514973A1 - Vacuum, pressure or liquid pump - Google Patents

Vacuum, pressure or liquid pump Download PDF

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Publication number
EP2514973A1
EP2514973A1 EP09808937A EP09808937A EP2514973A1 EP 2514973 A1 EP2514973 A1 EP 2514973A1 EP 09808937 A EP09808937 A EP 09808937A EP 09808937 A EP09808937 A EP 09808937A EP 2514973 A1 EP2514973 A1 EP 2514973A1
Authority
EP
European Patent Office
Prior art keywords
connecting rod
actuators
membranes
eccentric
shaft
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
EP09808937A
Other languages
German (de)
French (fr)
Other versions
EP2514973B1 (en
Inventor
Óscar DONADO MUÑOZ
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.)
Electro Ad SL
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Electro Ad SL
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Filing date
Publication date
Application filed by Electro Ad SL filed Critical Electro Ad SL
Publication of EP2514973A1 publication Critical patent/EP2514973A1/en
Application granted granted Critical
Publication of EP2514973B1 publication Critical patent/EP2514973B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • 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
    • F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • 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
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/025—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel
    • F04B43/026—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel each plate-like pumping flexible member working in its own pumping chamber
    • 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
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics

Definitions

  • Vacuum, pressure or liquid pump of the type that comprises driving means with a shaft connected to an eccentric, at least two membranes that block a similar number of apertures in a box, characterised in that it comprises: a connecting rod, in whose centre houses a single bearing for each eccentric through which the referred shaft passes and at least two actuators that join the membranes to the connecting rod, being said actuators articulating with the connecting rod.
  • pumps are known in the state of the art, with one or two heads, one on each side of the motor, or even two on the same side (opposite with traditional connecting rods and a similar number of bearings). If more extraction capacity is required additional, heads can be added, or they can be over-dimensioned, which involves the use of as many connecting rods, bearings and membranes as required heads, increasing sizes and motor powers.
  • Spanish utility model 0244030 "A DEPRESSION OR VACUUM MEMBRANE PUMP" is known from 1979, in the name of PIERBURG BMBH & CO.KG, which refers to a depression or vacuum membrane pump, especially for conditioning automobile elements, such as servo brakes, the membrane of which is operated from a main shaft via a connecting rod and the chamber that is next to the head is sealed against the atmosphere, the chamber is connecting with the atmosphere by means of at least one valve that allows access the air and prevents the air exit from chamber to the atmosphere. In a similar fashion another valve performs the same process to expulse the air.
  • the inventor intends to operate with a single connecting rod, more heads, in other words, using a single connecting rod, be able to place as many actuators with membranes as permitted the connecting rod size, so that, to larger size of the connecting rod, greater number of actuators can be operate. This results in economic savings for both the manufacturer and the end buyer.
  • each head incorporated into the pump requires a different load point along the shaft for each one.
  • This invention uses a single bearing for each eccentric on which point all forces are balanced and stabilised. This is because only one connecting rod is required independently of the number of heads.
  • the present pump can operate a determined number of membranes with the same connecting rod and all forces caused by the heads and membranes are centred with respect to each other at the same working point.
  • an expulsion force is generated, another intake force is produced at the opposite point, with these being equal at all cycle points.
  • One objective of this invention is a vacuum, pressure or liquid pump, of the type comprising driving means with a shaft connected to an eccentric, at least two membranes that block a similar number of apertures in a box, characterised in that it comprises: a connecting rod, the centre of which houses a single bearing for each eccentric through which the referred shaft passes and at least two actuators that join the membranes to the connecting rod, with said actuators articulating with the connecting rod.
  • Figure 1 illustrates a box 1, driving means or motor 2, apertures in the box 4, which houses the membranes and heads, a shaft 5, an eccentric 8, a connecting rod 6, actuators 7 and the connecting rod pass-through orifices 10 (at the actuator 7 positions).
  • FIG. 1 shows driving means 2, connecting rod 6, eccentric 8, shaft 5, connecting rod pass-through orifices 10 and actuators 7.
  • Figure 3 illustrates the actuator 7 that is joined to the connecting rod via the actuator pass-through orifice 11, with a pin to form a hinge joint.
  • Figure 4 represents box 1, heads 3, box apertures 4, connecting rod 6, actuators 7, shaft 5, connecting rod pass-through orifices 10, pins 12 that form hinges joints and a bearing 9 housing the eccentric.
  • the product is basically configured as follows: it comprises a box 1, driving means 2, with shaft 5 connected to eccentric 8, two membranes (as many as necessary, three, four, six, despite the fact that, although there are two in this embodiment, they cannot be seen because they are housed inside), which block the orifices in box 4 of cited box 1.
  • actuators 7 and the membranes it is possible to configure as many as desired, starting with two by taking into account the positions of actuators 7 so that they compensate the forces as well as possible. For example, with three actuators 7, each one could be positioned at 120°-, which would then largely balance the forces. Five actuators would be positioned every 72°- and so on according to the desired number. The idea is to divide the circumference by the desired number of actuators 7.
  • this invention includes a single bearing 9 for each eccentric 8.
  • connecting rod 6 the centre of which houses a single bearing 9, through which the referred shaft 5 passes and at least two actuators 7 that connect the membranes housed inside heads 3 to connecting rod 6, with said actuators 7 articulating with connecting rod 6 by, for example, pins.
  • Actuators 7 are articulated to connecting rod 6 by joints that employ pins 12 in this embodiment to form hinge joints.
  • connecting rods 6 partially house actuators 7 just as shown in figures 1 , 3 and 4 .
  • connecting rod 6 articulates by means of a first pass-through orifice 10 through which actuator 7 passes, facing it via pin 12 ( Figure 4 ), which passes through actuator 7, leaving both pass-through orifices 10 and 11 aligned ( Figures 1 , 2 and 4 ).
  • actuators 7 This enables actuators 7 to continue pushing the membranes housed inside head 3 so that they continue to block and unblock the respective entrances and exits inside head 3. Even when the eccentric movement is produced, the connecting rod forces that the movement on the membrane is linear because actuator 7 articulation on connecting rod 6 allows any membranes position to be recovered while these maintain their respective positions over apertures 4.
  • connecting rod 6 becomes the connection between actuator 7 and bearing 9 and eccentric 8, thus permitting the membranes to work and adapt to any position as forced by the eccentric.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

It comprises driving means (2), with shaft (5), connected to an eccentric (8), at least two membranes that block a similar number of apertures (4) in a box (1), characterised in that it comprises: connecting rod 6, the centre of which houses a single bearing (9) for each eccentric (8), through which referred shaft (5) passes, and at least two actuators (7) that join membranes (3) to connecting rod (6), with said actuators (7) articulated to connecting rod (6).

Description

  • Vacuum, pressure or liquid pump, of the type that comprises driving means with a shaft connected to an eccentric, at least two membranes that block a similar number of apertures in a box, characterised in that it comprises: a connecting rod, in whose centre houses a single bearing for each eccentric through which the referred shaft passes and at least two actuators that join the membranes to the connecting rod, being said actuators articulating with the connecting rod.
    • BACKGROUND OF THE INVENTION
  • The use of pumps is known in the state of the art, with one or two heads, one on each side of the motor, or even two on the same side (opposite with traditional connecting rods and a similar number of bearings). If more extraction capacity is required additional, heads can be added, or they can be over-dimensioned, which involves the use of as many connecting rods, bearings and membranes as required heads, increasing sizes and motor powers.
  • Thus, Spanish utility model 0244030 "A DEPRESSION OR VACUUM MEMBRANE PUMP" is known from 1979, in the name of PIERBURG BMBH & CO.KG, which refers to a depression or vacuum membrane pump, especially for conditioning automobile elements, such as servo brakes, the membrane of which is operated from a main shaft via a connecting rod and the chamber that is next to the head is sealed against the atmosphere, the chamber is connecting with the atmosphere by means of at least one valve that allows access the air and prevents the air exit from chamber to the atmosphere. In a similar fashion another valve performs the same process to expulse the air.
    • DISCLOSURE OF THE INVENTION
  • This application is framed within the sector of vacuum, pressure and liquid pumps.
  • With this invention, the inventor intends to operate with a single connecting rod, more heads, in other words, using a single connecting rod, be able to place as many actuators with membranes as permitted the connecting rod size, so that, to larger size of the connecting rod, greater number of actuators can be operate. This results in economic savings for both the manufacturer and the end buyer.
  • This means that the need for independent regulation of force centring and work loads is eliminated. Currently, each head incorporated into the pump requires a different load point along the shaft for each one. This invention uses a single bearing for each eccentric on which point all forces are balanced and stabilised. This is because only one connecting rod is required independently of the number of heads.
  • Thus, greater performances are obtained with less space because a smaller pump can provide identical or even better results than larger pumps. Similarly, this means that this smaller size leads to significant space and weight savings.
  • In this way, the present pump can operate a determined number of membranes with the same connecting rod and all forces caused by the heads and membranes are centred with respect to each other at the same working point. When an expulsion force is generated, another intake force is produced at the opposite point, with these being equal at all cycle points.
  • One objective of this invention is a vacuum, pressure or liquid pump, of the type comprising driving means with a shaft connected to an eccentric, at least two membranes that block a similar number of apertures in a box, characterised in that it comprises: a connecting rod, the centre of which houses a single bearing for each eccentric through which the referred shaft passes and at least two actuators that join the membranes to the connecting rod, with said actuators articulating with the connecting rod.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • In order to facilitate the description, this report is accompanied by four sheets of drawings that represent a practical exemplary embodiment, which is given as an example that does not limit the scope of this invention.
    • Figure 1 is a general view of the invention, in which the membranes and heads have been eliminated.
    • Figure 2 is a close-up without the box, membranes and heads.
    • Figure 3 is a close-up of an actuator, a part that is connected by means of a hinge joint to the connecting rod.
    • Figure 4 is a side view of the invention applied to an end product.
    SPECIFIC EXEMPLARY EMBODIMENT OF THIS INVENTION
  • Thus, Figure 1 illustrates a box 1, driving means or motor 2, apertures in the box 4, which houses the membranes and heads, a shaft 5, an eccentric 8, a connecting rod 6, actuators 7 and the connecting rod pass-through orifices 10 (at the actuator 7 positions).
  • Figure 2 shows driving means 2, connecting rod 6, eccentric 8, shaft 5, connecting rod pass-through orifices 10 and actuators 7.
  • Figure 3 illustrates the actuator 7 that is joined to the connecting rod via the actuator pass-through orifice 11, with a pin to form a hinge joint.
  • Lastly, Figure 4 represents box 1, heads 3, box apertures 4, connecting rod 6, actuators 7, shaft 5, connecting rod pass-through orifices 10, pins 12 that form hinges joints and a bearing 9 housing the eccentric.
  • Thus, in a specific exemplary embodiment, the product is basically configured as follows: it comprises a box 1, driving means 2, with shaft 5 connected to eccentric 8, two membranes (as many as necessary, three, four, six, despite the fact that, although there are two in this embodiment, they cannot be seen because they are housed inside), which block the orifices in box 4 of cited box 1.
  • Regarding actuators 7 and the membranes, it is possible to configure as many as desired, starting with two by taking into account the positions of actuators 7 so that they compensate the forces as well as possible. For example, with three actuators 7, each one could be positioned at 120°-, which would then largely balance the forces. Five actuators would be positioned every 72°- and so on according to the desired number. The idea is to divide the circumference by the desired number of actuators 7.
  • Unlike known pumps, this invention includes a single bearing 9 for each eccentric 8.
  • It also comprises connecting rod 6, the centre of which houses a single bearing 9, through which the referred shaft 5 passes and at least two actuators 7 that connect the membranes housed inside heads 3 to connecting rod 6, with said actuators 7 articulating with connecting rod 6 by, for example, pins.
  • When motor 2 is switched on, it turns shaft 5 which, by means of eccentric 8 produces a similar movement of connecting rod 6.
  • Actuators 7 are articulated to connecting rod 6 by joints that employ pins 12 in this embodiment to form hinge joints.
  • Moreover, in this invention the connecting rods 6 partially house actuators 7 just as shown in figures 1, 3 and 4. In this embodiment, connecting rod 6 articulates by means of a first pass-through orifice 10 through which actuator 7 passes, facing it via pin 12 (Figure 4), which passes through actuator 7, leaving both pass-through orifices 10 and 11 aligned (Figures 1, 2 and 4).
  • This enables actuators 7 to continue pushing the membranes housed inside head 3 so that they continue to block and unblock the respective entrances and exits inside head 3. Even when the eccentric movement is produced, the connecting rod forces that the movement on the membrane is linear because actuator 7 articulation on connecting rod 6 allows any membranes position to be recovered while these maintain their respective positions over apertures 4.
  • In fact, connecting rod 6 becomes the connection between actuator 7 and bearing 9 and eccentric 8, thus permitting the membranes to work and adapt to any position as forced by the eccentric.
  • This invention patent describes a new vacuum, pressure or liquid pump. The exemplary embodiments descried here do not limit this invention, which can have various applications and/or adaptations within the scope of the following claims.

Claims (3)

  1. A vacuum, pressure or liquid pump, of the type comprising driving means (2), with shaft (5), connected to an eccentric (8), at least two membranes that block a similar number of apertures (4) in a box (1), characterised in that it comprises:
    - Connecting rod (6), the centre of which houses a single bearing (9) for each eccentric (8), through which referred shaft (5) passes, and
    - At least two actuators (7) that join membranes (3) to connecting rod (6), with said actuators (7) articulated to connecting rod (6).
  2. A pump, in accordance with claim 1 characterised in that connecting rod (6) partially houses actuators (7) and articulates with the same by means of a first pass-through orifice (10), through which connecting rod (6) passes, facing a second pass-through orifice (11), through which actuator (7) passes, so that both pass-through orifices (10, 11) are joined by a pin (12).
  3. A pump, in accordance with claim 1 characterised in that actuators (7) are articulated in an equidistant manner from each other to the connecting rod (6).
EP09808937.8A 2009-12-17 2009-12-17 Vacuum, pressure or liquid pump Active EP2514973B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2009/070603 WO2011073464A1 (en) 2009-12-17 2009-12-17 Vacuum, pressure or liquid pump

Publications (2)

Publication Number Publication Date
EP2514973A1 true EP2514973A1 (en) 2012-10-24
EP2514973B1 EP2514973B1 (en) 2021-03-31

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ID=42668186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09808937.8A Active EP2514973B1 (en) 2009-12-17 2009-12-17 Vacuum, pressure or liquid pump

Country Status (4)

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US (1) US20130039789A1 (en)
EP (1) EP2514973B1 (en)
BR (1) BR112012014602A2 (en)
WO (1) WO2011073464A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118775248A (en) 2014-12-30 2024-10-15 固瑞克明尼苏达有限公司 Integral mounting system on axial reciprocating pump
BR102018003284B1 (en) 2017-02-21 2021-07-20 Graco Minnesota Inc. PISTON ROD FOR A PUMP, PUMP, SPRAYER, AND METHOD FOR REPLACING A WEAR GLOVE
EP4127474A1 (en) 2020-03-31 2023-02-08 Graco Minnesota Inc. Pump drive system

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Also Published As

Publication number Publication date
WO2011073464A1 (en) 2011-06-23
US20130039789A1 (en) 2013-02-14
EP2514973B1 (en) 2021-03-31
BR112012014602A2 (en) 2018-12-04

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