EP3418563A1 - Kolbenstruktur und kolbenpumpe - Google Patents

Kolbenstruktur und kolbenpumpe Download PDF

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Publication number
EP3418563A1
EP3418563A1 EP18170349.7A EP18170349A EP3418563A1 EP 3418563 A1 EP3418563 A1 EP 3418563A1 EP 18170349 A EP18170349 A EP 18170349A EP 3418563 A1 EP3418563 A1 EP 3418563A1
Authority
EP
European Patent Office
Prior art keywords
plunger
pump
engagement groove
cap
plunger body
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Withdrawn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
EP18170349.7A
Other languages
English (en)
French (fr)
Inventor
Shiding Yu
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.)
Ningbo Luteng Precision Machinery Co Ltd
Original Assignee
Ningbo Luteng Precision Machinery Co Ltd
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 Ningbo Luteng Precision Machinery Co Ltd filed Critical Ningbo Luteng Precision Machinery Co Ltd
Publication of EP3418563A1 publication Critical patent/EP3418563A1/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Withdrawn legal-status Critical Current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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • 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
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0408—Pistons
    • 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
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
    • F04B1/124—Pistons
    • 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1077—Flow resistance valves, e.g. without moving parts

Definitions

  • the present disclosure relates to the technical field of plunger pumps, and in particular to a plunger structure (plunger piston structure) and a plunger pump (plunger piston pump).
  • a power component of the washer mostly employs a plunger pump.
  • the plunger pump normal operation of a body is achieved by causing a change of the sealed volume depending on a reciprocating movement of a plunger in a cylinder bore.
  • the plunger is an important part for the normal operation of the plunger pump.
  • the performance of the plunger directly affects the working performance of the plunger pump.
  • Prior plungers mainly include solid plungers and open hollow plungers.
  • the solid plunger requires many materials and has high production cost. Moreover, the solid structure causes a heavy overall weight, which results in greater friction between the plunger and the plunger pump during working, reducing the working efficiency of the plunger pump.
  • the open hollow plunger is easily deformed during the production process, and under a working state, the plunger body is subjected to a high-temperature and humid environment so that the inner wall is prone to rust to damage the plunger body, thus the open hollow plunger has short service life, and therefore has the technical problems of low working efficiency and short service life.
  • Embodiments of the present disclosure provide a plunger structure and a plunger pump, to alleviate the technical problem that a hollow plunger of the prior art has low working efficiency and short service life.
  • a plunger structure provided in the present disclosure comprises: a plunger body with both ends closed, an engagement groove disposed at the top of the plunger body, a plunger cap fixedly connected with the engagement groove, and an elastic member having one end fixedly disposed within the plunger cap, wherein the plunger body is sleeved in the elastic member, and the plunger body is an integrally molded part; a top end of the plunger body is exposed out from the plunger cap, the engagement groove which is depressed inwardly is formed in a circumferential direction of the top of the plunger body, and an inside of the plunger body is in a cavity structure.
  • the plunger cap comprises a skirt portion and a plurality of triangular claws which extend upwardly and are formed along a top edge of the skirt portion; the plurality of triangular claws are circumferentially disposed at equal intervals around a centerline of the skirt portion, and the plurality of the triangular claws are all engaged with the engagement groove.
  • the plurality of triangular claws all converge toward the centerline of the skirt portion, and an aperture size of an opening delimited (defined) by the plurality of triangular claws is equal to a diameter size of the engagement groove.
  • the elastic member is a spring, and one end of the spring is engaged within the skirt portion.
  • the plunger body is a part integrally molded by cold forging.
  • the plunger structure in the present disclosure comprises a plunger body with both ends closed and an engagement groove disposed at the top of the plunger body, wherein the engagement groove is formed by recessing inwardly in a circumferential direction of the top of the plunger body, and an inside of the plunger body is in a cavity structure. Since the inside of the plunger body is in a cavity structure, the weight of the plunger body is reduced, thereby reducing the inertia of the plunger structure during its operation within the plunger pump, increasing the rotational speed of the plunger pump, and increasing the self-priming property of the plunger pump, thereby improving the working efficiency of the plunger pump.
  • the plunger with an internal cavity structure also saves processing materials, thereby reducing the production cost of the plunger structure.
  • the plunger body is an integrally molded part, which prevents the plunger body from being broken under a strong working state of the plunger structure, prolongs the service life of the plunger structure, and thereby also allows a plunger pump to work more stably, improving the working efficiency of the plunger pump, and enabling good practicability and functionality.
  • the present disclosure provides a plunger pump having the plunger structure described above.
  • the plunger pump further comprises a pump body and a motor actuating movement of the pump body, the pump body is fixedly connected with an inlet pipe and an outlet pipe sequentially, and an overflow valve is disposed between the inlet pipe and the outlet pipe.
  • the pump body is provided therein with a piston ring configured to be connected with the plunger body
  • the piston ring comprises a piston ring body, a plunger sleeve positioned inside the piston ring body, and a reinforcing rib positioned between an outer wall of the plunger sleeve and an inner wall of the piston ring body, and both the plunger sleeve and the piston ring body are fixedly connected with the reinforcing rib.
  • a sealing gasket is disposed wherein the pump body is connected with the plunger sleeve.
  • the plunger pump further comprises a controller, a buzzer for alarm, a switch provided with a solenoid valve, a current overload protector configured to detect a current, and a temperature sensor configured to detect a temperature of the pump body, wherein the buzzer, the switch, the overload protector, and the temperature sensor are all electrically connected with the controller.
  • the beneficial effects of the present disclosure are as follows:
  • the plunger pump has the same advantages as those of the plunger structure described above, which will not be described repeatedly here.
  • orientation or positional relations indicated by the terms such as “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside”, “outside”, etc. are the orientation or positional relations shown based on the figures, and these terms are intended only to facilitate the description of the present disclosure and simplify the description, but not intended to indicate or imply that the referred devices or elements must be in a particular orientation or constructed or operated in the particular orientation, and therefore should not be construed as limiting the present disclosure.
  • terms such as “first”, “second”, and “third” are used only for descriptive purpose, and should not be understood as indicating or implying to have importance in relativity.
  • connection may be fixed connection or detachable connection or integral connection, may be mechanical connection or electric connection, or may be direct coupling or indirect coupling via an intermediate medium or internal communication between two elements.
  • connection may be fixed connection or detachable connection or integral connection, may be mechanical connection or electric connection, or may be direct coupling or indirect coupling via an intermediate medium or internal communication between two elements.
  • the present embodiment provides a plunger structure comprising: a plunger body 1 with both ends closed, an engagement groove 11 disposed at the top of the plunger body 1, a plunger cap 2 fixedly connected with the engagement groove 11, and an elastic member having one end fixedly disposed within the plunger cap 2, wherein the plunger body 1 is sleeved (sheathed) in the elastic member, and the plunger body 1 is an integrally molded part.
  • a top end of the plunger body 1 is exposed out from the plunger cap 2, the engagement groove 11 which is depressed inwardly is formed in a circumferential direction of the top of the plunger body 1, and an inside of the plunger body 1 is in a cavity structure.
  • the plunger structure in the present embodiment comprises a plunger body 1 with both ends closed and an engagement groove 11 disposed at the top of the plunger body 1.
  • the engagement groove 11 which is depressed inwardly is formed in a circumferential direction of the top of the plunger body 1, and an inside of the plunger body 1 is in a cavity structure. Since the inside of the plunger body 1 is in a cavity structure, the weight of the plunger body 1 is reduced, thereby reducing the inertia of the plunger structure during its operation within the plunger pump, increasing the rotational speed of the plunger pump, and increasing the self-priming property of the plunger pump, thereby improving the working efficiency of the plunger pump.
  • the plunger with an internal cavity structure also saves processing materials, thereby reducing the production cost of the plunger structure.
  • the plunger body 1 is an integrally molded part, which prevents the plunger body 1 from being broken under a strong working state of the plunger structure, prolongs the service life of the plunger structure, and thereby also allows a plunger pump to work more stably, improving the working efficiency of the plunger pump, and enabling good practicability and functionality.
  • the plunger body 1 is sleeved in the elastic member.
  • the plunger body 1 moves downward. Since one end of the elastic member is fixedly disposed within the plunger cap 2, and the plunger cap 2 is fixedly connected with the engagement groove 11, the plunger body 1 drives the plunger cap 2 to move downward synchronously.
  • the plunger cap 2 compresses the elastic member so that the elastic member is deformed, and at the same time, the volume in the plunger pump is reduced during the downward movement of the plunger body 1, and a liquid such as water or oil or the like is conveyed out under the action of pressure difference so as to achieve the purpose of conveying the liquid such as water or oil or the like.
  • the plunger body 1 moves to the farthest position, since the elastic member is deformed, the plunger body 1 returns to the initial position under the action of an elastic force generated after the deformation of the elastic member, that is, one reciprocating movement of the plunger body 1 is completed.
  • the plunger cap 2 and the plunger body 1 are fixedly connected together through the engagement groove 11.
  • the elastic member is fixedly disposed within the plunger cap 2, the elastic member is compressed when the plunger body 1 drives the plunger cap 2 to move, and the plunger body 1 rebounds to the initial position under the elastic force generated after the deformation of the elastic member to complete the operation of the plunger pump. This is an ingenious design with a reasonable structure, and this further improves the functionality and practicality of the plunger structure.
  • the plunger cap 2 comprises a skirt portion 21 and a plurality of triangular claws 22 which extend upwardly and are formed along a top edge of the skirt portion 21.
  • the plurality of triangular claws 22 are disposed circumferentially at equal intervals around a centerline of the skirt portion 21, and the plurality of triangular claws 22 are all engaged with the engagement groove 11.
  • the plunger cap 2 comprises a skirt portion 21 and a plurality of triangular claws 22 which extend upwardly and are formed along a top edge of the skirt portion 21.
  • the plurality of triangular claws 22 can be engaged with the engagement groove 11, and the elastic member is fixedly disposed within the skirt portion 21.
  • the skirt portion 21 compresses the elastic member so that the elastic member is deformed, and at the same time, the elastic member gives the skirt portion 21 an upward acting force, thereby allowing tight abutment of the plurality of triangular claws 22 against the engagement groove 11, to ensure that the plunger cap 2 and the plunger body 1 are firmly connected together, and to prevent the plunger cap 2 from being disengaged from the engagement groove 11 during the movement of the plunger body 1, thereby further improving the functionality and practicality of the plunger body 1.
  • the plurality of triangular claws 22 all converge toward the centerline of the skirt portion 21, and an aperture size of an opening delimited by the plurality of triangular claws 22 is equal to a diameter size of the engagement groove 11.
  • the aperture size of the opening delimited by the plurality of triangular claws 22 is equal to the diameter size of the engagement groove 11, when the plurality of triangular claws 22 are engaged with the engagement groove 11, the plurality of triangular claws 22 all have the tendency of expanding outwardly, that is, the plunger cap 2 is tightly fixed together with the engagement groove 11 under the action of a tension generated by the triangular claws 22, further improving the firmness of the connection between the plunger cap 2 and the plunger body 1 and preventing the plunger cap 2 from being disengaged from the plunger body 1 during the reciprocating movement of the plunger body 1.
  • the elastic member is a spring 3, and one end of the spring 3 is engaged within the skirt portion 21.
  • the plunger cap 2 compresses the spring 3 so that the spring 3 is deformed, and at the same time, the plunger body 1 presses the cavity in the plunger pump so that the volume in the plunger pump is reduced, thereby achieving the purpose of conveying a medium.
  • the plunger body 1 moves to the farthest position, since the elastic member is deformed, the plunger body 1 returns to the initial position under the action of an elastic force generated after the deformation of the elastic member, that is, one reciprocating movement of the plunger body 1 is completed.
  • the spring 3 is a mechanical part that works using elastic property, and has a characteristic that it deforms under the action of an external force and restores its original shape after the external force is removed. With such characteristic of the spring 3, the movement of the mechanism can be well controlled to realize the function of returning to an initial position of the mechanism.
  • the plunger body 1 is a part integrally molded by cold forging.
  • Cold forging molding can realize large-scale production and has the characteristics of short processing period, simple operation, and low manufacturing cost.
  • the cold forging molding enables one-step molding of a product during processing of the product, avoiding the deformation of the product caused by heat during the production process.
  • the plunger body 1 is processed by the following procedures. Firstly, a plunger blank is molded in one step by a cold forging process and an open hollow plunger blank is formed; after the hollow plunger blank is molded, an opening of the plunger blank is subjected to sealing treatment by performing high-frequency or intermediate-frequency localized heating and roller-extrusion sealing process (i.e. a process of high-frequency or intermediate-frequency localized heating, roller extruding and sealing) at one end of the plunger blank having the opening; and after the sealing treatment of the opening of the plunger body 1 is completed, an engagement groove 11 is processed at the top of the plunger blank by a turning process, so as to complete the processing and manufacture of the final molded plunger body 1.
  • high-frequency or intermediate-frequency localized heating and roller-extrusion sealing process i.e. a process of high-frequency or intermediate-frequency localized heating, roller extruding and sealing
  • the present embodiment provides a plunger pump which has the plunger structure described in the above Embodiment 1.
  • the plunger pump has the same advantages as those of the above plunger structure, which will not be described repeatedly here.
  • the plunger pump further comprises a pump body and a motor actuating movement of the pump body.
  • the pump body is fixedly connected with an inlet pipe and an outlet pipe sequentially, and an overflow valve is disposed between the inlet pipe and the outlet pipe.
  • the medium flows from the inlet pipe, through the pump body and then out of the outlet pipe.
  • an overflow valve is disposed between the inlet pipe and the outlet pipe.
  • the overflow valve has a unidirectional flowing characteristic, thus a liquid such as water or oil or the like cannot be flow back from the outlet pipe into the pump body. This prevents damage to the pump body caused by the backflow of the liquid such as water or oil or the like, and at the same time, ensures the outflow of all the liquid such as water or oil or the like through the outlet pipe and improves the working efficiency of the pump body.
  • the pump body is provided therein with a piston ring 4 for being connected to the plunger body 1.
  • the piston ring 4 comprises a piston ring body 41, a plunger sleeve 42 positioned inside the piston ring body 41, and a reinforcing rib 43 positioned between an outer wall of the plunger sleeve 42 and an inner wall of the piston ring body 41. Both the plunger sleeve 42 and the piston ring body 41 are fixedly connected with the reinforcing rib 43.
  • the plunger body 1 when the plunger pump is working, the plunger body 1 can move downward along the plunger sleeve 42 and drive the plunger cap 2 to move downward synchronously.
  • the skirt portion 21 compresses the spring 3 so that the spring 3 is deformed, and the plunger sleeve 42 can ensure that the plunger body 1 does not deviate from the movement track, and at the same time can prevent swinging of the plunger body 1 during the movement, thereby improving the operation stability and working efficiency of the plunger pump.
  • the reinforcing rib 43 can improve the strength of the entire piston ring 4 and prolong the service life of the entire piston ring 4.
  • the pump body and the plunger sleeve 42 are connected with each other at a position where a sealing gasket is disposed.
  • the sealing gasket can ensure the airtightness at a position where the pump body is connected with the plunger sleeve 42, so as to ensure enough pressure inside the pump body during working of the plunger pump to prevent the situation that outflowing amount of the liquid such as water or oil or the like at the outlet pipe is relatively small due to insufficient internal pressure during the working of the pump body, thereby further improving the working efficiency of the plunger pump.
  • the sealing gasket is a silicone gasket.
  • the silicone gasket has good ductility, airtightness, and non-toxic and odorless characteristics, is low-carbon and environmentally friendly, has a very clean and sanitary surface, is cheap in price, and has a wide range of sources available in the market.
  • the plunger pump further comprises a controller, a buzzer for alarm, a switch provided with a solenoid valve, a current overload protector for detecting the current, and a temperature sensor for detecting the temperature of the pump body.
  • the buzzer, the switch, the overload protector, and the temperature sensor are all electrically connected with the controller.
  • the maximum current value that can be tolerated when the plunger pump works is set in the current overload protector.
  • the current overload protector sends a signal to the controller, and the controller receives the corresponding signal and then takes an action.
  • the controller controls the solenoid valve to be closed so as to cut off a power switch of the plunger pump to prevent overburning of the pump body which may cause a fire accident in a serious case, thereby improving the safety of the plunger pump.
  • the plunger pump further comprises a temperature sensor, wherein the highest temperature value at which the plunger pump works is set in the temperature sensor.
  • the temperature sensor sends a signal to the controller, and the controller receives the corresponding signal and then takes an action.
  • the controller instructs the buzzer to give an alarm for warning and alerting to prevent damage to the pump body due to an excessive temperature so as to further improve the practicability and functionality of the plunger pump.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP18170349.7A 2017-06-20 2018-05-02 Kolbenstruktur und kolbenpumpe Withdrawn EP3418563A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710470921.8A CN107035680A (zh) 2017-06-20 2017-06-20 柱塞结构及柱塞泵

Publications (1)

Publication Number Publication Date
EP3418563A1 true EP3418563A1 (de) 2018-12-26

Family

ID=59541613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18170349.7A Withdrawn EP3418563A1 (de) 2017-06-20 2018-05-02 Kolbenstruktur und kolbenpumpe

Country Status (3)

Country Link
US (1) US20200080552A9 (de)
EP (1) EP3418563A1 (de)
CN (1) CN107035680A (de)

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Publication number Priority date Publication date Assignee Title
CN108626613A (zh) * 2017-12-15 2018-10-09 杭州彬康农业科技有限公司 一种采用水冷高效散热的节能激光植物灯
CN111468258B (zh) * 2020-04-17 2021-08-13 西安交通大学 一种物理分离动力煤厂煤泥的简易装置与方法
CN112581926B (zh) * 2020-12-15 2022-03-11 新沂市承翔电子有限公司 一种防护性能高的电子蜂鸣器

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Publication number Priority date Publication date Assignee Title
DE8910468U1 (de) * 1989-09-01 1989-11-02 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckkolbenpumpe für Reinigungsgeräte od.dgl.
DE19605369A1 (de) * 1996-02-14 1997-08-21 Schaeffler Waelzlager Kg Kolbenmaschine mit Kunststoffkolben
DE102010033483A1 (de) * 2010-08-05 2012-02-09 Schaeffler Technologies Gmbh & Co. Kg Kolbenmaschine mit wenigstens einem Kunststoffkolben

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CN1385608A (zh) * 2002-06-24 2002-12-18 胡松海 高压柱塞式水泵清洗机平面凸轮
JP4386030B2 (ja) * 2005-12-02 2009-12-16 トヨタ自動車株式会社 高圧ポンプ
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CN203285640U (zh) * 2013-06-09 2013-11-13 淮阴工学院 泵辅式阀配流柱塞泵
DE102014202796A1 (de) * 2014-02-17 2015-08-20 Robert Bosch Gmbh Kolben-Kraftstoffpumpe für eine Brennkraftmaschine
GB2527190B (en) * 2014-04-29 2020-05-20 Chervon Hk Ltd Chain saw and fluid pump
JP6517531B2 (ja) * 2015-02-20 2019-05-22 株式会社Ｓｏｋｅｎ 燃料ポンプ
DE102015205651A1 (de) * 2015-03-27 2016-09-29 Gardner Denver Thomas Gmbh Hubverdrängerpumpe und dafür einsetzbares Überdruck-Ventil mit einer elastischen Ventilmembran
CN205823612U (zh) * 2016-07-06 2016-12-21 江西汇尔油泵油嘴有限公司 一种电控单体泵柱塞防脱装置
CN206801848U (zh) * 2017-06-20 2017-12-26 宁波禄腾精密机械有限公司 柱塞结构及柱塞泵

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8910468U1 (de) * 1989-09-01 1989-11-02 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckkolbenpumpe für Reinigungsgeräte od.dgl.
DE19605369A1 (de) * 1996-02-14 1997-08-21 Schaeffler Waelzlager Kg Kolbenmaschine mit Kunststoffkolben
DE102010033483A1 (de) * 2010-08-05 2012-02-09 Schaeffler Technologies Gmbh & Co. Kg Kolbenmaschine mit wenigstens einem Kunststoffkolben

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CN107035680A (zh) 2017-08-11
US20200080552A9 (en) 2020-03-12
US20180363644A1 (en) 2018-12-20

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