• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A pump unit comprising co-operating, push-pull connected reciprocating pumps for the pumping in portions of contents to packing containers on a packing machine. The reciprocating pumps (1) each comprise a control piston (4) connected to the pump piston (6) in control cylinders (18), which are joined together in pairs by means of a connecting pipe (20). The pipe is provided with a flow regulating valve (21) for regulating the flow rate of the hydraulic oil and hence the piston speed. The quantity of hydraulic oil in the connecting pipe can be regulated with the help of a supply tank (23) so that the length of stroke of the pistons can be adjusted.
    公开号:SU1736344A3
    申请号:SU884613081
    申请日:1988-11-29
    公开日:1992-05-23
    发明作者:Бордини Джорджо；Винцензи Маурицио
    申请人:Тетра Дев-Ко (Фирма)；
    IPC主号:
    专利说明:

    relief valve 17 connected to the connecting pipe 14. The synchronization device provides a change in the volume of control chambers 13 sections 1 and 2 is proportional to the movement of the pistons 8 of the drive cylinders 6 when the pistons 8 of sections 1 and 2 move in antiphase, while the flow controller 15 provides a change in the speed of movement pistons 8 with alternate supply of compressed air into the drive chambers 11 of both sections. The change in the volume of the working chambers 12 is achieved
    by changing the volume of liquid in the cavity of the synchronizing device and is performed by opening the valve 17, as a result of which the liquid from the supply tank 16, due to the appropriate pressure control, can be directed from the tank 16 to the connecting pipe 16 or from this pipe to the tank 16. Increasing the volume in the cavity synchronizing device leads to a decrease in the volume of the working chambers 12, and a decrease in the volume in this cavity increases the volume of the working chambers 13. 2 Cpf-ly, 2 Il.
    The invention relates to pumping engineering, in particular, to piston pumps for metering various substances.
    The purpose of the invention is to expand the range of adjustment of the pump volumetric flow rate by providing adjustment of the piston stroke amount and speed of their movement.
    Figure 1 shows a diagram of the pump unit; Fig. 2 is a diagram of a distribution node.
    The pumping unit contains two pump sections 1 and 2, connected by means of a distributor 3 to the common inlet 4 and outlet 5 for the pumped medium. Each of the pump sections 1 and 2 includes successively located drive 6 and working 7 cylinders, pistons 8-10 of which are interconnected and are installed to form actuator 11, working 12 and control 13 chambers, and the control chambers 13 of both sections 1 and 2 are filled with liquid and interconnected by means of a synchronizing device, including a connecting pipe 14 with a flow controller 15 and a supply tank 16, connected to the connecting pipe 14 by means of a valve 17. The removal of the control chambers 13 is proportional to the movement of the pistons 8 of the driving cylinders 6 when the pistons 8 of both sections 1 and 2 move in antiphase. The drive chamber 11 of each section 1 and 2 is installed with possible alternate connection by means of the aid of the opening 18 to a source of compressed air (not shown), while the driving cylinder 7 has one more opening 19 for air located on the other side of the driving piston 8.
    The control chamber 11 is sealed with a diaphragm 20. In the supply tank 16, excess may be created.
    pressure using appropriate means (not shown). Switchgear3 includes a conical plug 21, installed with the possibility
    approximately 120 degrees forward and backward with the help of the drive device 22. In addition, the shutter 21 can be moved in the axial direction of the device 23, with which it is connected with the rod 24, which is necessary,
    e.g. for washing the distribution unit. Each drive cylinder 6 is provided with a mechanical stop 25 for limiting the length of the stroke of the piston 8.
    Pump unit operates as follows.
    The pre-sync device is filled with liquid, the pistons 8 of both sections 1 and 2 are installed to move simultaneously in antiphase,
    For example, the piston 8 of section 2 is mounted on the anvil 25, and the piston 8 of section 1 is displaced towards the control chamber 13 by an amount equal to the required stroke length. Through the hole 18 of section 2 in
    the drive chamber 11 of this section is supplied with compressed air, as a result of which interconnected pistons 8-10 will start moving in the direction of increasing the volume of the working chamber 12 of section 2, while the pumped medium through the corresponding channels of the distributor 3 will flow from the inlet 4 into the working chamber 12 sections 2. Simultaneously, the liquid from the control chamber 13 of section 2
    through the connecting pipe 14 with the flow regulator 15 is expelled into the control chamber 13 of section 1, where through the diaphragm 20 it acts on the piston 10 of this section, which causes the movement of the pistons 10, 8 and 9
    in the direction of reducing the volume of the working chamber 12 of section 1, the pumped medium from which the piston 9 through the corresponding channels of the distribution device 3
    is displaced to the consumer through the outlet 5 of section 1, while the air exhausted in the previous cycle from the drive chamber 11 of section 1 by the piston 8 is forced out through the opening 18. The pistons of both sections 1 and 2 move before the contact of the piston 8 with the stop 25 of the driving cylinder 6 section 1 after switching the distributor. After switching the switchgear 3, the compressed air is supplied to the drive chamber 11 of section 1 and the pistons in the sections move in the same way as described for section 2, and the fluid from the control chamber 13 of section 1 through the connecting pipe 14 with the flow regulator 15 is forced out section 2, the pistons of both sections 1 and 2 occur before the contact of the piston 8 with the stop 25 of the driving cylinder 6 of section 2. Then the cycles are repeated, the speed of movement of the pistons 8 is 10, and hence the volume flow of the pump unit It is controlled by a flow controller 15.
    The change in the volume of the working chambers 12 is achieved by changing the volume of liquid in the synchronizing device, i.e. in the control chambers 13 and the connecting pipe 14, which is ensured by opening the valve 17, as a result of which the liquid from the supply tank 16, due to the appropriate pressure regulation in it, can be directed either from the supply tank 16 to the synchronization device cavity or from this cavity to the supply tank sixteen.
    The increase in the volume of fluid in the cavity of the synchronizing device leads to a decrease in the volume of the working chambers 12, and a decrease in the volume in the specified cavity increases the volume of the working chambers 12. Thus, the pump unit allows relatively simple adjustment
    not only the volume of the working chambers 12, but also the speed of the pistons 8 - 10.
    权利要求:
    Claims (3)
    [1]
    1. A pumping unit containing two pumping sections, connected by means of a distribution device, to common inlet and outlet openings for the pumped medium, each of which includes sequentially located
    drive and working cylinders, the pistons of which are interconnected and installed to form working, driving and control chambers, the control chambers of both sections being filled with liquid and interconnected by means of a synchronizing device including a connecting pipe to ensure that the volume of the control chambers changes proportionally to drive pistons
    cylinders with the movement of the pistons of both sections in antiphase, characterized in that, in order to extend the range of adjustment of the volumetric flow of the pump by providing adjustment of the stroke
    the pistons and their speeds, the pump unit is provided with a supply tank, with the help of a valve connected to the connecting pipe of a synchronizing device, and the connecting pipe between the control chambers is equipped with a flow regulator.
    [2]
    2. A unit according to claim 1, characterized in that the drive chambers of each section are installed with the possibility of alternating
    connection to a compressed air source.
    [3]
    3. Node according to claims 1 and 2, characterized in that the drive cylinder of each section is provided with a mechanical stop to limit the length of the piston stroke.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1736344A3|1992-05-23|Pumping unit
    CA1224082A|1987-07-14|Constant-flow-rate dual-unit pump
    US4500267A|1985-02-19|Mud pump
    US4431433A|1984-02-14|Single stage liquid motor and pump
    RU2006141599A|2008-07-20|HYDRAULIC MULTI-CYLINDER PUMP
    US4436230A|1984-03-13|Arrangement for pulsation-free feeding of a liquid medium
    GB1423646A|1976-02-04|Intensifier pump with half wave modulator error detection in digital transmission systems
    US3951311A|1976-04-20|Liquid measuring and mixing apparatus
    KR910003223A|1991-02-27|Hydraulic pump control circuit of traveling construction machine
    US4541241A|1985-09-17|Hydraulic driving arrangement for reciprocable masses or the like
    GB1320432A|1973-06-13|Constant flow pumping system
    WO1986003560A1|1986-06-19|Mud pump
    ES8505042A1|1985-05-01|Control of an adjustment device for a variable displacement hydrostatic pump.
    US3331329A|1967-07-18|Single acting twin cylinder pump or compressor
    GB1374538A|1974-11-20|Piston pump
    US4334407A|1982-06-15|Compressed gas operated turbine
    SU846778A1|1981-07-15|Metering pump
    SU530108A1|1976-09-30|Dosing method adjustable displacement pump
    SU859678A1|1981-08-30|Radial piston pump
    RU2074975C1|1997-03-10|Diesel engine fuel system
    RU2180052C2|2002-02-27|Proportioning pump
    JPH09151903A|1997-06-10|Pressure intensifying piston type pressurization test device
    SU781387A1|1980-11-23|Hydropneumatically driven metering pump
    SU909278A2|1982-02-28|Hydraulically driven reciprocating pump
    SU1143890A1|1985-03-07|Hydraulic drive
    同族专利:
    公开号 | 公开日
    IT8722816D0|1987-11-30|
    US5024584A|1991-06-18|
    IT1223184B|1990-09-19|
    AU2631788A|1989-06-01|
    AU608917B2|1991-04-18|
    EP0319093A1|1989-06-07|
    JPH01280689A|1989-11-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2736899C2|2016-07-15|2020-11-23|Верне Текнолоджи С.Р.Л.|Pump for high-density powder|CA574566A|1959-04-21|Aktiebolaget Svenska Kullagerfabriken|Pneumatic liquid pressure pump|
    US1767404A|1927-06-08|1930-06-24|Sulzer Ag|High-pressure reciprocating piston compressor|
    CH224724A|1941-11-19|1942-12-15|Sulzer Ag|Pump system for pumping liquids at high pressure.|
    US2807215A|1955-07-28|1957-09-24|Crane Packing Co|Variable displacement pump|
    GB795558A|1955-11-14|1958-05-28|Birgit Weisner|Improvements in reciprocating piston pumps for concrete and drier plastic materials|
    US3516761A|1968-10-10|1970-06-23|Drilling Well Control Inc|Fluid actuated hydraulic pump|
    USRE26820E|1969-06-02|1970-03-10|Bma/gtt |
    US3718409A|1970-10-09|1973-02-27|Aro Corp|Reciprocating pump control system|
    US4065230A|1975-01-17|1977-12-27|Hart Associates, Inc.|Reciprocating infusion pump and directional adapter set for use therewith|
    EP0119922B1|1983-03-22|1987-05-06|Bendix Espana S.A.|Rack and pinion power steering, particularly with a central output|
    IT1186465B|1985-12-18|1987-11-26|Tetra Dev Co|PUMPING UNIT FOR FILLING CONTAINERS IN PACKAGING MACHINES|
    FR2600723B3|1986-06-26|1988-08-26|Berthoud Sa|MEMBRANE PISTON PUMP WITH RUNNING.|JP2671216B2|1988-06-02|1997-10-29|トウフク株式会社|Slurry pumping equipment|
    US5141408A|1990-11-09|1992-08-25|Prc|Product pumping apparatus|
    IT1251298B|1991-08-27|1995-05-08|Tetra Dev Co|METHOD AND DEVICE FOR DOSED PUMPING|
    DE19735091B4|1997-08-13|2006-03-02|Schwing Gmbh|Two-cylinder slurry pump|
    SE516081C2|1999-01-26|2001-11-12|Tetra Laval Holdings & Finance|Method for controlling a steam injector|
    US6267571B1|1999-08-17|2001-07-31|Schwing America, Inc.|Hydraulic displacement pump having two stroke length|
    US20090220358A1|2008-02-29|2009-09-03|Putzmeister America, Inc.|Unequal length alternating hydraulic cylinder drive system for continuous material output flow with equal material output pressure|
    IT1396624B1|2009-11-26|2012-12-14|Dropsa Spa|MINIMAL LUBRICATION DEVICE|
    US20110120803A1|2009-11-26|2011-05-26|Dropsa S.P.A.|Minimal lubrication device|
    US8449265B2|2010-05-26|2013-05-28|National Oilwell Varco, L.P.|Hydraulically actuated reciprocating pump|
    CA2809166A1|2010-08-10|2012-02-16|Conocophillips Company|Uniform displacement sweep|
    US9121397B2|2010-12-17|2015-09-01|National Oilwell Varco, L.P.|Pulsation dampening system for a reciprocating pump|
    WO2013023454A1|2011-08-15|2013-02-21|湖南三一智能控制设备有限公司|Pumping device and engineering machinery|
    US10060421B2|2015-06-29|2018-08-28|Caterpillar Inc.|Hydraulic drive multi-element cryogenic pump|
    US10024311B2|2015-08-06|2018-07-17|Caterpillar Inc.|Cryogenic pump for liquefied natural gas|
    CN106884769B|2017-04-10|2018-09-21|龙岩学院|A kind of Double-liquid mud-injection pump|
    CN110397566B|2019-07-05|2020-10-30|广西科技大学鹿山学院|Liquid material output method adopting metering pump|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT22816/87A|IT1223184B|1987-11-30|1987-11-30|PUMPING UNIT|
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