US3777626A - Pump construction - Google Patents

Pump construction Download PDF

Info

Publication number
US3777626A
US3777626A US00162966A US3777626DA US3777626A US 3777626 A US3777626 A US 3777626A US 00162966 A US00162966 A US 00162966A US 3777626D A US3777626D A US 3777626DA US 3777626 A US3777626 A US 3777626A
Authority
US
United States
Prior art keywords
cylinders
pump
pistons
pair
chambers
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
US00162966A
Other languages
English (en)
Inventor
R Schurenberg
H Wenzel
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.)
Torkret GmbH
Original Assignee
Torkret 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
Priority claimed from DE19712106713 external-priority patent/DE2106713C3/de
Application filed by Torkret GmbH filed Critical Torkret GmbH
Application granted granted Critical
Publication of US3777626A publication Critical patent/US3777626A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L23/00—Valves controlled by impact by piston, e.g. in free-piston machines
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
    • 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
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/111—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members
    • F04B9/115—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by two single-acting liquid motors, each acting in one direction

Definitions

  • a pump for viscous materials has a pair of cylinders [30] Foreign Apphcatmn-Pnomy Data each of which is provided with a working end which 1971 Gelmany P 21 06 713-0 receives viscous material, and with a remote end. Pistons are reciprocable in each of the cylinders and a [52] US. Cl .1 92/137, 92/168, 417/343 casing bridges the remote ends and is provided with [51] hit. Cl.
  • the present invention relates generally to pump'constructions, and more particularly to a pump for viscous materials. Still more particularly the present invention relates to a pump for such viscous materials as concrete.
  • a supply hopper supplies the material to the cylinders and is provided with two open-' ings each of which communicates with one of the cylinders and which are alternately closed and opened by the distributor.
  • One known construction provides for the reciprocation of the piston or pistons alternately due to the over and under pressure of the pressure medium in the cylinder associated with the piston.
  • the force acting upon the piston during the suction stroke of the latter for sucking the material from the hopper into the cylinder whose piston performs the suction stroke, is limited by and to the underpressure produced by the pressure medium in the cylinder whose piston performs the suction stroke. If there is any leakage in the hydraulic system, this will be immediately translated in terms of improper operation of the pump.
  • the seal of the piston has a tendency, when subjected to under pressure, to contract which means that its sealing effectiveness is substantially reduced.
  • Another construction utilizes a pair of ropes each of which is connected with one of the pistons and has its other end connected with a winch which is mounted in that portion of the cylinder remotefrom the working end and which is turnable by a shaft extending to the interior of the cylinder.
  • the two winches are connected at the exterior by a transmission or the like.
  • An additional object of the invention is to provide such a pump construction in which themeans for ef fecting such control require relatively little space and in which a reliable sealing effect with respect to the various components involved is obtained.
  • a pump for viscous materials particularly for concrete, which comprises according to one embodiment, a pair of cylinders each having a working end adapted to receive viscous material, and a remote end.
  • a pair of pistons are also provided, each being reciprocable in one of the cylinders.
  • Wall means defines an enclosure which communicates with bothof the remote ends and roller means is turnably joumalled in this enclosure.
  • Elongated flexible means is trained about the roller means and connected with the pistons for effecting the reciprocation of the latter.
  • rollers require but little space and no sealing difficulties are experienced.
  • the other piston When one of the. pistons is subjected to fluid pressure to move it from its retracted to its working position, the other piston is necessarily moved in the opposite direction, beingcoupled with the first-mentioned piston by the rope or ropes. This means that the second piston performs its suction stroke and draws the material to be pumped into its associated cylinder, and during the next reciprocatory movement during which it performs its working stroke, the first-mentioned piston performs its own suction stroke.
  • a sin gle roller may be utilized in the enclosure, and the remote ends of the cylinders may be provided with respective openings through which opposite end portions of a single rope trained about the roller, will pass. Sealing means will then be provided for sealing these openings with respect to the end portions of the rope but while permitting the rope freedom of sliding movement through these openings.
  • the opposite end portions of the rope will of course be connected with the respective pistons and this construction is particularly simple because it requires nothing more but a sealing arrangement for the aforementioned openings.
  • the enclosure may be subdivided into two chambers each having a roller joumalled therein.
  • a single rope may be trained about the. two rollers and be connected at its opposite end portions with the respective pistons.
  • the wall which subdivides the enclosure into the two chambers may be provided with an aperture through which the rope passes and which is again sealed by suitable sealing means.
  • the invention provides also for a further embodiment according to which the enclosure is again subdivided with a roller being joumalled in each chamber provided in this manner.
  • two ropes are utilized each trained about one of the rollers and connected with one end to one of the pistons and with the other end to a control piston located in a specially provided channel of the associated cylinder. This construction is highly advantageous in that it is not possible for the rope to become relaxed.
  • rollers are mounted on shafts which extend to the exterior of the enclosure and are provided with chain sprockets or the like which are connected with one another via an endless chain carrying an abutment in whose path of movementis located an end switch which is controlled by the abutment on contact therewith, so that the end position of the respective working and suction stroke of each piston is thereby controlled by reversing the direction of movement of the chain.
  • Still another embodiment of the invention provides for a construction in which the enclosure is again subdivded into two chambers, each chamber having a roller journalled therein.
  • a single rope is provided which is trained about both rollers and whose opposite ends are connected to the respective pistons.
  • One of the cylinders is provided with a special channel in which a control piston is reciprocable and an intermediate portion of the rope is connected with this control piston which latter hydraulically separates the working pistons of the cylinders from one another.
  • the circumferential surfaces of the sealing elements utilized are under the operating pressure of the pressure medium used for effecting reciprocation of the pistons, in order to obtain a tight engagement of the seal with the rope or the like.
  • the seals are advantageously mounted in casings which are connected via channels or the like with the source of pressure fluid.
  • FIG. 1 is a fragmentary sectioned view of one embodiment of the invention
  • FIG. 2 is a view similar to FIG. 1 but illustrating a further embodiment of the invention
  • FIG. 3 is a sectioned view illustrating one sealing arrangement according to the invention.
  • FIG. 4 is a view similar to FIG. 3 but illustrating a further sealing arrangement
  • FIG. 5 is a view similar to FIG. 3 illustrating an additional sealing arrangement
  • FIG. 6 is a view similar to FIG. 1 illustrating a further embodiment
  • FIG. 7 is a view taken on line VII-VII of FIG. 6;
  • FIG. 8 is a fragmentary detail view of the exterior control of the embodiment in FIGS. 6 and 7;
  • FIG. 9 is a view similar to FIG. 1 illustrating an additional embodiment of the invention.
  • the supply hopper and the like for the material and the conduits which receive the material pumped by the pump.
  • Accommodated in the cylinders l and 2 are two working pistons 3 and 4 for reciprocation therein.
  • the left-hand side of the cylinders 1 and 2 must be understood to be connected with a supply hopper as well as with a pressure conduit which receives material entering the cylinders from the supply hopper. This is already known and is not believed to require further discussion, particularly in view of the fact that it does not in itself form a part of the present invention.
  • the left-hand end portions of the cylinders l and 2 are thus to be considered the working ends.
  • Wall means in form ofa housing 10 is directly connected with the right-hand or remote end portions of the cylinders l and 2 forming a single enclosure or enclosed internal space and being flanged to the cylinders. .Iournalled for rotation in the enclosure are two rollers 6 and 7 about which a single rope 5 is trained. The opposite end portions of the rope 5 are connected with the working pistons 3 and 4, respectively.
  • a separating wall 8 is provided which subdivides the enclosure constituted by the housing 10 into two chambers and is provided with an opening through which the rope 5 passes, and which is sealed by a sealing construction 9 which permits sliding movement of the rope 5.
  • FIG. 2 differs from that of FIG. 1 in that the housing 10 is of one-piece construction and only a single roller 6 is journalled for rotation in it.
  • the rope 5 passes through two sealing constructions 9 which are provided to seal openings in the end walls of the cylinders 1 and 2 and through which the rope 5 again passes.
  • the embodiment of FIG. 2 is the same as that in FIG. 1.
  • FIG. 3 shows in detail one sealing construction for use in the preceding embodiments. It is provided with a casing 11 and a sealing sleeve 12 through which the rope 5 passes. Channels 13 establish communication of the casing 11 with the non-illustrated source of pressure medium for effecting reciprocation of the working pistons, so that the circumference of the sealing sleeve 12 is subjected to the pressure of the pressure medium and thus is firmly pressed against the rope 5 in order to obtain good sealing effectiveness.
  • the pressure force with which the sleeve 12 engages the rope 5 is so selected as to obtain a reliable sealing effect while on the other hand keeping the wear resulting from friction to a minimum.
  • FIG. 4 shows a further sealing construction intended particularly for use in the embodiment of FIG. 1 and connected via a channel 13 directly with the pressure side of the pump.
  • the illustration in FIG. 4 is believed to be self-explanatory.
  • FIG. 5 shows still another embodiment of the sealing construction intended specifically for use in the embodiment of FIG. 2 and also connected via a channel 13 directly with the pressure side of the pump. Again, the embodiment of FIG. 5 is believed to be selfexplanatory. Let it be noted that two of the sleeves 12 are utilized in this construction.
  • the sealing effectiveness and the reliability and lifetime of the seal depends to a large extent not only on the sleeve 12, but also upon the characteristics of the rope 5. Because of the high tensile forces to be transmitted via the rope 5 it is preferred to use a wire rope with a synthetic plastic jacket, or else a wire rope which is accommodated in a smooth-surfaced hose.
  • FIG. 6 A further embodiment of the invention is illustrated in FIG. 6 wherein two ropes 5 are provided, each connecting the respective working pistons 3 and 4 with a control piston 14 having a substantially smaller surface area at its end face than the pistons 3 and 4 and guided in a separate channel of the respective cylinders 1 and 2.
  • FIG. 7 shows particularly clearly that the rollers 6 and 7 each of which has one of the ropes 5 trained thereabout, are provided on shafts 16 which extend to the exterior of the housing 10 which is here again subdivided into two chambers by the dividing wall 8.
  • the shafts 16 are provided with suitable motion-transmitting means, here in form of chain sprockets 17 which engage an endless chain 18 and are thereby connected with one another in order to obtain enforced unity of movement of the pistons 3 and 4.
  • a control or abutment member 19 is provided on the chain 18 and is associated with an end switch 20 so positioned that it is located in the path of movement of the abutment 19 and will be operated by the same, whereby a direction reversal of the chain 18 and thereby of the strokes of the pistons 3 and 4, respectively, is obtained.
  • FIG. 9 utilizes again the same components as before, except that here only one rope 5 is provided and only one separate channel 22 in which only a single control piston 21 is accommodated.
  • the opposite end portions of the rope 5 are connected with the working pistons 3 and 4, respectively, and an intermediate portion of the rope 5 passes through the channel 22 and is connected with the control piston 21 which separates the working pistons 3 and 4 hydraulically from one another.
  • the housing is again identified with reference numeral 10, being subdivided into two chambers by the wall 8 and each of the chambers accommodating a roller 7.
  • the roller 6 is here located in the region of the opposite or working ends of the cylinders l and 2 and the rope is trained about it with its intermediate portion.
  • rollers as well as the various components necessary for reversing the direction of reciprocation of the working pistons 3 and 4 are only of relatively small mass so that their direction can be reversed simply and without difficulties, and without requiring substantial energies. Furthermore, no particular sealing problems are encountered in these constructions, due to the high sealing effectiveness obtained with the various embodiments, so that the wear is significantly reduced and the devices have a greatly improved lifetime.
  • a pair of cylinders each having a working end adapted to receive viscous material, and a remote end, said cylinders also having a separate channel communicating with both cylinders; a control piston in said channel and fluid-tightly separating said cylinders; a pair of pistons each reciprocable in one of said cylinders; wall means fastened to said cylinders and defining two enclosed chambers each associated with one of said remote ends; roller means turnably journalled in said space and comprising two rollers each mounted in one of said chambers; and elongated flexible rope means trained about said roller means and having end portions connected with said pistons for effecting the reciprocation of the same, and an intermediate portion connected with said control piston.
  • a pair of cylinders each having a working end adapted to receive viscous material, and a remote end, each of said cylinders having a separate channel and a control piston slidable therein; a pair of pistons each reciprocable in one of said cylinders; wall means fast with said cylinders and defining an enclosed internal space which is subdivided in two chambers each associated with one of said cylinders and the respective channel; roller means turnably jour nalled in said space and comprising a pair of rollers each journalled in one of said chambers; and a pair of elongated flexible ropes each trained about one of said rollers and having spaced end portions respectively connected with the piston and the control piston of the associated cylinder.
  • a pair of cylinders each having a working end adapted to receive viscous material, and a remote end; a pair of pistons each reciprocable in one of said cylinders; wall means fastened to said cylinders and defining an enclosed internal space which communicates with both of said remote ends; roller means turnably journalled in said space; elongated flexible means trained about said roller means and connected with said pistons for effecting the reciprocation of the same; fluid-pressure actuatedsealing means sealing said elongated flexible means with. respect to said cylinders so as to maintain the latter fluidtightly sepacasing means accommodating said sealing means; and wherein said conduit means communicates with said casing means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
US00162966A 1971-02-12 1971-07-15 Pump construction Expired - Lifetime US3777626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712106713 DE2106713C3 (de) 1971-02-12 Zweizylindrige Kolbenpumpe

Publications (1)

Publication Number Publication Date
US3777626A true US3777626A (en) 1973-12-11

Family

ID=5798583

Family Applications (1)

Application Number Title Priority Date Filing Date
US00162966A Expired - Lifetime US3777626A (en) 1971-02-12 1971-07-15 Pump construction

Country Status (3)

Country Link
US (1) US3777626A (enrdf_load_stackoverflow)
JP (1) JPS5039481B1 (enrdf_load_stackoverflow)
FR (1) FR2126871A5 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049365A (en) * 1974-09-13 1977-09-20 Sparks Sr Virgil H Oil well pump with plunger pull down and desanding assembly
US5133331A (en) * 1989-12-15 1992-07-28 Roy Hutchinson Recoilless air gun
US5246237A (en) * 1991-04-09 1993-09-21 Mannesmann Aktiengesellschaft Seal for a work cylinder operated by pressurized fluid
US6397844B1 (en) * 1998-04-23 2002-06-04 Barnwell Investments S.A. Respiration apparatus
US7144232B2 (en) 2002-12-04 2006-12-05 Locher Ben C Water well pump
CN106050786A (zh) * 2016-08-16 2016-10-26 傅国俊 一种大扭矩u型液压回转机构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5429188U (enrdf_load_stackoverflow) * 1977-07-30 1979-02-26
JP3008240U (ja) * 1994-08-25 1995-03-07 有限会社松榮堂 焚 香

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US97698A (en) * 1869-12-07 Improvement in atmospheric and condensing hydraulic engines
US194377A (en) * 1877-08-21 Improvement in treadle-operated confluent pumps
US729210A (en) * 1902-04-05 1903-05-26 James A Norton Expansive-fluid motor.
US961039A (en) * 1909-09-07 1910-06-07 George A Starr Pump.
US1351176A (en) * 1919-08-25 1920-08-31 Charles G Lillos Air-pump
US3189078A (en) * 1964-02-11 1965-06-15 Davidsson Tage Arnold Oil burner apparatus
US3267816A (en) * 1962-05-15 1966-08-23 Graham Engineering Company Inc Rotary actuator device
US3267817A (en) * 1962-08-08 1966-08-23 Graham Engineering Company Inc Fluid rotary actuator
US3514113A (en) * 1967-07-26 1970-05-26 Konrad Weiswurm Sealing mechanism for high pressure piston pumps

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4815322B1 (enrdf_load_stackoverflow) * 1968-04-03 1973-05-14

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US97698A (en) * 1869-12-07 Improvement in atmospheric and condensing hydraulic engines
US194377A (en) * 1877-08-21 Improvement in treadle-operated confluent pumps
US729210A (en) * 1902-04-05 1903-05-26 James A Norton Expansive-fluid motor.
US961039A (en) * 1909-09-07 1910-06-07 George A Starr Pump.
US1351176A (en) * 1919-08-25 1920-08-31 Charles G Lillos Air-pump
US3267816A (en) * 1962-05-15 1966-08-23 Graham Engineering Company Inc Rotary actuator device
US3267817A (en) * 1962-08-08 1966-08-23 Graham Engineering Company Inc Fluid rotary actuator
US3189078A (en) * 1964-02-11 1965-06-15 Davidsson Tage Arnold Oil burner apparatus
US3514113A (en) * 1967-07-26 1970-05-26 Konrad Weiswurm Sealing mechanism for high pressure piston pumps

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049365A (en) * 1974-09-13 1977-09-20 Sparks Sr Virgil H Oil well pump with plunger pull down and desanding assembly
US5133331A (en) * 1989-12-15 1992-07-28 Roy Hutchinson Recoilless air gun
US5246237A (en) * 1991-04-09 1993-09-21 Mannesmann Aktiengesellschaft Seal for a work cylinder operated by pressurized fluid
US6397844B1 (en) * 1998-04-23 2002-06-04 Barnwell Investments S.A. Respiration apparatus
US7144232B2 (en) 2002-12-04 2006-12-05 Locher Ben C Water well pump
CN106050786A (zh) * 2016-08-16 2016-10-26 傅国俊 一种大扭矩u型液压回转机构
CN106050786B (zh) * 2016-08-16 2018-05-25 无锡通美机械科技有限公司 一种大扭矩u型液压回转机构

Also Published As

Publication number Publication date
FR2126871A5 (enrdf_load_stackoverflow) 1972-10-06
DE2106713B2 (de) 1976-04-15
DE2106713A1 (de) 1972-08-24
JPS5039481B1 (enrdf_load_stackoverflow) 1975-12-17

Similar Documents

Publication Publication Date Title
SU498917A3 (ru) Насос дл в зки жидкостей
US3777626A (en) Pump construction
US3153385A (en) Pump for high viscosity fluids
US3726614A (en) Pump construction
US4087209A (en) Displacement slurry pump
US2448104A (en) Differential concrete pump
US3577830A (en) Hydraulic motor
US2313284A (en) Pump valve
US2678609A (en) Lubricating and sealing means
ES554720A0 (es) Un aparato para bombear un fluido
US3363575A (en) Fluid pressure-driven multiplex pump
SE7503572L (enrdf_load_stackoverflow)
US4337017A (en) Hydraulic sleeve valve and seal arrangement for piston pump
US2733665A (en) Klopp
US3303749A (en) Hydraulic motors
US2864342A (en) Hydraulically operated motor and control means therefor
JP2016528433A (ja) パイプ切り替え部を有する２シリンダ式粘性物質用ポンプ
US4193743A (en) Oscillatory pump for the transport of viscous materials
US3016016A (en) Reciprocating pump
GB1329629A (en) Pressure fluid cylinders
US2233076A (en) Rotary inking mechanism
US4017220A (en) Reversible pump with positive valving
SU1040211A1 (ru) Бетононасос
US931535A (en) Piston-pump.
ATE89372T1 (de) Fluidgetriebener kolbenstangenloser arbeitszylinder.