EP3030784A1 - Positive displacement pump - Google Patents

Positive displacement pump

Info

Publication number
EP3030784A1
EP3030784A1 EP14736732.0A EP14736732A EP3030784A1 EP 3030784 A1 EP3030784 A1 EP 3030784A1 EP 14736732 A EP14736732 A EP 14736732A EP 3030784 A1 EP3030784 A1 EP 3030784A1
Authority
EP
European Patent Office
Prior art keywords
unit
pump
valve unit
hydraulic
inline
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
EP14736732.0A
Other languages
German (de)
French (fr)
Other versions
EP3030784B1 (en
Inventor
Norbert Jäger
Andreas KARWOWSKI
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.)
Mhwirth GmbH
Original Assignee
Mhwirth 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
Application filed by Mhwirth GmbH filed Critical Mhwirth GmbH
Publication of EP3030784A1 publication Critical patent/EP3030784A1/en
Application granted granted Critical
Publication of EP3030784B1 publication Critical patent/EP3030784B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • 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
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • 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
    • F04B43/06—Pumps having fluid drive
    • F04B43/067—Pumps having fluid drive the fluid being actuated directly by a piston
    • 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
    • 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
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections

Definitions

  • the invention relates to a positive displacement pump with a drive unit and a pump unit.
  • Displacement pumps are already known in many designs.
  • a disadvantage of the known positive displacement pumps is that they are either not suitable for high pressures and high volume flows or that they are difficult to maintain.
  • the invention has set itself the task of creating a positive displacement pump which is improved, at least with regard to one of the disadvantages mentioned.
  • the term "positive displacement pump” refers in particular to a pump which has at least one displacement element in at least one working space through which the medium to be pumped, that is to say the conveying medium, flows.
  • the positive displacement pump according to the invention has a drive unit.
  • a pump unit is provided with at least one inline valve unit.
  • two inline valve units are provided per working space.
  • the inline valve unit is braced in an operating position between two flanges of the pump unit. This distortion of the valve units between two flanges can also be referred to as Eisenflanscheinbau.
  • the flanges are interconnected by means of connecting and / or spacing means, preferably at a fixed distance from one another.
  • the clamping is therefore preferably not by successively moving the flanges, but preferably by the spreading (in other words: clamping) of a clamping device.
  • a displacement of the valve unit is possible without disassembly of a connecting and / or spacer means. It must therefore be disassembled for the displacement of the inline valve unit no connection and / or spacer means by means of which or the flanges are connected to each other. As a result, the maintenance of the inline valve units is significantly simplified and accelerated.
  • the distance between two adjacent connection and / or spacer means is preferably greater than the outer dimensions - such as the diameter - of the inline valve unit.
  • connection and / or spacer means may be arranged such that adjacent connection and / or spacer means always have the same distance from each other. However, they can also be arranged so that different distances between adjacent connecting and / or spacers result. If the connecting and / or spacing means are arranged such that at least the greatest distance (more precisely, the clear width) between two adjacent connecting and / or spacing means is greater than the outer dimensions - such as the diameter - of the in-line valve unit, then this is a prerequisite for a displacement of the inline valve unit between two connection and / or spacer means through, without their disassembly, created.
  • a valve displacement device is provided by means of which the inline valve unit can be displaced from an operating position into a maintenance position.
  • the valve unit is preferably displaceable on a path deviating from a circular path.
  • the valve displacement device is preferably fixedly connected to the rest of the pump.
  • the inline valve unit is preferably braced exclusively with the flanges.
  • the inline valve unit is therefore preferably clamped exclusively between the flanges, a requirement for a simplified and quick maintenance is created.
  • in-line valve unit refers in particular to a valve unit which is flowed through in a straight line.
  • straight through means in particular that the flow direction immediately before the valve is at least approximately in the direction of flow immediately after the valve corresponds. This distinguishes inline valve units of angle valve units, in which the fluid enters, for example, on the bottom and at an angle of 90 degrees laterally exit.
  • the inline valve units are preferably flowed through at least approximately vertically. This means in particular that the flow direction is at least approximately perpendicular immediately before and immediately after the valve unit. It is also conceivable that the valve units are not flowed through at least approximately vertically.
  • the pump can have exactly one or more working spaces. It can be single-acting or double-acting.
  • the displacement device can also significantly simplify the maintenance of the in-line valve units by making the valve units accessible to a crane installation.
  • the two flanges, between which the inline valve unit is braced are preferably oriented at least approximately horizontally and, with particular preference, are arranged exactly above one another.
  • the inline valve unit is preferably no longer arranged between the flanges, but freely accessible from all sides.
  • the in-line valve unit may also be referred to as an in-line delivery valve unit.
  • the displacement pump is preferably a rinsing pump for drilling fluid or a so-called "slurry pump", ie a pump for transporting solids in liquid Slurry pumps are also referred to as thick matter pumps
  • the thick materials are mixtures of liquid and solid components
  • the pump generates a pressure of up to 300 bar and preferably has a capacity of up to 1500 m 3 / h
  • the power of the pump is preferably more than 500 kW In one embodiment, it is about 2400 kW and In another embodiment, about 5000 kW.
  • the pump unit is a flat membrane pump unit.
  • the displacement element thus preferably comprises a flat membrane.
  • the membrane is arranged vertically in its center position.
  • the membrane is not arranged vertically in its central position. This can be effected for example by a non-horizontal installation of the pump.
  • the displacer element is preferably actuated by a working fluid, which in turn is preferably pressurized by an oscillating piston of a drive unit.
  • the piston pressurizing the working fluid is completely separated from the fluid to be pumped by the diaphragm.
  • connection and / or spacer means preferably comprise threaded bolts, which more preferably pass through spacer sleeves.
  • connection and / or spacer means are preferably arranged such that different distances result between two adjacent connection and / or spacer means.
  • connection and / or spacer means are arranged such that the greatest distance between adjacent connection and / or spacer means is provided in the region of the movement path of the inline valve unit.
  • connecting and / or spacing means are arranged such that the largest distance (more precisely, the clear width) between two adjacent connecting and / or spacing means is only slightly larger than the outer dimensions - such as the diameter - of the inline Valve unit, then on the one hand a requirement for a compact pump unit is created. In addition, the bending load on the flanges caused by the distortion of the valve units is reduced, compared to an arrangement with adjacent connecting and / or spacing means of greater spacing. On the other hand, this continues to be a prerequisite for a displacement of the inline valve unit between two connecting and / or spacer means, without their disassembly, created.
  • the greatest distance (more precisely, the clear width) between two adjacent connecting and / or spacing means can be only less than thirty and in particular only less than ten percent of the outer dimensions of the in-line valve unit greater than this.
  • connecting and / or spacing means are provided, which are arranged in the form of a rectangle.
  • Another number of connecting and / or spacers is conceivable. In a conceivable alternative embodiment with equal distances between connection and / or spacer means, this is preferably slightly larger than the outer dimensions - such as the diameter - of the inline valve unit.
  • the in-line valve unit is displaceable by means of the valve displacement device on a movement path deviating from the circular path, even with such a small (largest) distance between adjacent connection and / or spacer means, a displacement of the inline valve unit from an operating position take place in a maintenance position by means of the valve displacement device, without disassembly of a connecting and / or spacer means is required.
  • a maintenance position can be achieved, which is characterized by a desirably large distance from the rest of the pump unit, without an elaborate, in turn much tree space-consuming displacement device would be required.
  • the in-line valve unit is displaceable without disengaging a screw connection on the pump unit-in one embodiment, except for the hydraulic tensioner. It must therefore preferably be solved for displacing the inline valve unit at most a screw of the hydraulic tensioning device.
  • the in-line valve unit is displaceable already after loosening a threaded element of the clamping device. To relocate the inline valve unit, so a threaded element of the clamping device - if necessary after hydraulic relief of the threaded element - and no threaded element of the remaining pump to be solved.
  • the inline valve unit after the release of a single threaded element, preferably a lock nut of the clamping device, displaced.
  • the maintenance of the in-line valve units is thereby facilitated and accelerated.
  • the valve displacement device comprises an articulated articulated arm.
  • the articulated arm is mounted on a connecting and / or spacer means. An arranged between the flanges, only the storage of the articulated arm on the other pump unit serving element can therefore, as preferred, omitted.
  • the articulated arm is also hinged to the inline valve unit.
  • the inline valve unit is at least partially displaceable on a translational movement path. In another embodiment, the in-line valve unit is displaceable exclusively on a translatory movement path.
  • the valve displacement device comprises a telescopic arm.
  • valve displacement device comprises lateral telescopic rails - preferably two per inline valve unit - there is a suitable, then drawer-like, displaceability of the valve unit.
  • the hydraulic tensioning device preferably adjoins one of the flanges.
  • the hydraulic tensioning device preferably adjoins the lower flange.
  • the hydraulic tensioning device is therefore preferably arranged between the lower flange and the inline valve unit.
  • the hydraulic tensioner is a stand-alone unit, which preferably is not fixedly connected to the pump unit, such as an adjacent flange, then it can be easily replaced or serviced (e.g., replacement of gaskets).
  • the hydraulic tensioning device is removable without tools in the relaxed state.
  • An alternative embodiment, in which the hydraulic tensioning device can not be removed without tools in the relaxed state, is conceivable in particular if the two flanges are not exactly one above the other, but are arranged obliquely one above the other or next to one another, for example. It can then be provided securing means which fix the hydraulic tensioning device against falling out. These securing means can be designed so that they can be solved only with tools.
  • the hydraulic tensioning device particularly preferably exactly - a hydraulic cylinder element.
  • the hydraulic cylinder element provides exactly one hydraulic cylinder in one embodiment. In one embodiment, exactly one pressure piston is provided.
  • the hydraulic tensioning device has exactly one annular piston in exactly one annular cylinder.
  • the hydraulic cylinder element preferably provides a plurality of cylindrical hydraulic cylinders. And with advantage, a plurality of single hydraulic piston is provided.
  • the single hydraulic piston can also be referred to as a pressure piston. Preferably, they are cylindrical.
  • the hydraulic tensioner is double-acting in one embodiment.
  • the hydraulic pistons can be pressurized selectively on two different sides of an effective surface and thereby moved in two directions.
  • the hydraulic tensioner is single acting and the individual pistons are each equipped with a piston return spring. It is conceivable that a plurality of counter-elements are provided to fix the hydraulic tensioning device in a tensioned state.
  • 1 shows an exemplary positive displacement pump with a drive unit and a pump unit
  • 2 shows a partially sectioned side view of a pump unit with upper inline valve unit in the operating position and lower inline valve unit in the maintenance position, the valve displacement device being designed as an articulated arm;
  • Fig. 3 is an enlarged detail of Fig. 2;
  • FIG. 4 is a perspective view of the pump unit shown in FIG. 2; FIG.
  • FIG. 5 shows a side view of the pump unit shown in FIG. 2, with the upper in-line valve unit in the maintenance position and the lower inline valve unit in the operating position;
  • Fig. 6 is an enlarged detail of Fig. 5;
  • Fig. 7 is a perspective view of the pump unit shown in Fig. 5;
  • FIG. 8 is a partially sectioned side view of a pump unit with telescopic arms.
  • Fig. 9 is an enlarged detail of Fig. 8.
  • FIG. 10 is a perspective view of the pump unit shown in FIG. 8; FIG.
  • Fig. 1 1 is a partially sectioned side view of a pump unit, wherein each valve displacement device comprises two telescopic rails;
  • Fig. 12 is a detail of Fig. 1 1;
  • Fig. 12a is a view as in Fig. 12, but on a smaller scale and fixed by the lock nut hydraulic cylinder element
  • FIG. 13 is a perspective view of the pump unit shown in FIG. 11; FIG.
  • FIG. 14 shows a partially sectioned side view of a pump unit, in which a plurality of valve units and a plurality of displacement devices are arranged on each pair of flanges;
  • Fig. 15 is a detail of Fig. 14;
  • FIG. 16 shows a perspective illustration of a pump unit in which a plurality of valve units and a plurality of displacement devices are provided on each pair of flanges, with an upper valve unit in the operating position and an upper valve unit in the maintenance position and both lower valve units in the maintenance position;
  • 17 is a sectional view of an in-line valve unit in the clamped state
  • Fig. 18 is a sectional view of an inline valve unit in the untensioned state.
  • Fig. 1 shows an exemplary positive displacement pump with a drive unit A and a pump unit 100.
  • the drive unit A comprises a drive shaft 15, which is rotated by a motor, not shown, for example, an electric motor in rotation.
  • On the drive shaft 15 at least one only indicated gear is arranged, which meshes with at least one much larger, also just indicated gear of the crankshaft 13.
  • the drive shaft 15 may protrude on both sides of the housing of the drive unit.
  • On the crankshaft a connecting rod 14 is arranged.
  • the connecting rod is mounted on the crankshaft with the help of a connecting rod bearing, which is designed as a rolling bearing.
  • the connecting rod transmits its movement by means of a crosshead 16 to a crosshead rod 17, which merges into the piston rod 18.
  • the crosshead bearing is also a rolling bearing.
  • the crosshead also includes sliding blocks, which serve its linear bearing on the Gleitlagerwandungen.
  • a working medium piston 19 is arranged, which carries out a rectilinear oscillating movement in a working medium cylinder 20.
  • a pump unit 100 is provided on the drive unit A.
  • This provides a work medium space adjoining the working medium cylinder 20, in which working medium 21, for example hydraulic oil, is provided, which transfers the movement of the working medium piston 19 to a flat membrane 24.
  • the flat membrane 24 is shown in Fig. 1 in its two extreme positions.
  • the flat membrane 24 forms together with a part of the diaphragm housing 26 has a working space 25. This is connected via check valves in inline valve units 1, V with a pressure tube and suction pipe, not shown in Fig. 1.
  • a rotational movement of the crankshaft causes the working medium in the working medium space to be moved back and forth, deflecting the flat membrane alternately to the right and left.
  • the deflection to the left in Fig. 1 leads to a closing of the outlet check valve or pressure valve and to a suction of fluid through the open inlet check valve or suction valve.
  • the subsequent displacement of the piston according to FIG. 1 to the right leads to a closing of the inlet check valve and a delivery of a displacement or displaced piston volume corresponding volume of fluid via the now open outlet check valve and the displacement of the membrane with respect to FIG to the right.
  • three connecting rods, working medium cylinders and pump units 100 can be arranged side by side. It can therefore be a triplex pump with three working spaces. It can also more or less - about exactly two - connecting rods, working medium cylinders and pump units are arranged side by side. Per working space 25, two inline valve units 1, 1 'are provided.
  • the inline valve units 1, 1 ' are traversed in a straight line by conveying medium.
  • the flow direction immediately before the valve thus corresponds at least approximately to the flow direction immediately after the valve.
  • a change of direction of the pumped medium does not take place in the area of these valves.
  • FIG. 2 shows that in the operating position each inline valve unit 1, 1 'is braced between two flanges 2, 2'. Two flanges 2, 2 'which are arranged parallel to one another and spaced from one another thus form a pair of flanges 2a, between which the inline valve unit 1, 1' is braced.
  • FIG. 2 also shows that a valve displacement device 3 fixedly connected to the rest of the pump is provided, with the aid of which each inline valve unit 1, 1 'is clamped from an operating position B, in which the inline valve unit 1 is braced between the flange pair 2 a Maintenance position W, in which the inline valve unit 1 'is not disposed between the pair of flanges, is displaced.
  • FIGS. 2 and 4 show that the flanges 2, 2 'are connected to one another in all exemplary embodiments shown by means of connecting and / or spacing means 4.
  • the connecting and / or spacing means 4 are designed in all embodiments shown as connecting and spacer means 4, which connect the flanges firmly together at a predetermined, fixed distance.
  • the connecting and spacing means 4 in all the exemplary embodiments shown have threaded bolts screwed to the flanges 2, 2 'by means of nuts. As a spacer they have between the flanges arranged spacers, which are penetrated by the threaded bolt.
  • FIG. 7 shows that four connecting and stopping means 4, which are arranged in the form of a rectangle, are provided per valve unit 1, 1 '. There are therefore two different distances K, L between adjacent connection and spacer means 4.
  • the Fig. It can also be seen that the connecting and spacer means 4 are arranged so that the larger the two distances L is perpendicular to the direction of displacement V of the inline valve unit 1, 1 'extends and is slightly larger than the outer dimensions M of the inline valve unit. 1
  • the greatest distance L between two adjacent connecting and spacing means 4 is thus provided in the region of the movement path of the inline valve unit 1, 1 ' .
  • the perpendicularly running smaller distance K between two adjacent connection and spacer means 4 may be smaller than the outer dimensions M of the inline valve unit 1 (FIG. 5).
  • the displacement direction V simultaneously symbolizes a movement path of an inline valve unit 1. This deviates from a circular path. It can, as shown in Fig. 7, at least in sections be rectilinear.
  • the valve displacement device 3 comprises a hinged articulated arm 5.
  • valve displacement device 3 comprises a telescopic arm 6.
  • valve displacement device 3 comprises two telescopic rails 7, 7 ' .
  • a plurality of inline valve units 1, 1 ' namely two inline valve units 1, 1' and a plurality of displacement devices 3, namely two displacement devices 3, are provided on each flange pair 2a.
  • the displacement device 3 comprises in This embodiment, as in the embodiment shown in FIGS. 2 to 7, an articulated arm. 5
  • the in-line valve units 1, 1 ' are each clamped exclusively by means of a hydraulic tensioning device 8 between the flanges 2, 2'.
  • Fig. 3 shows that the hydraulic tensioning device 8 forms a self-contained unit which is not fixedly connected to the pump unit 100, such as the adjacent lower flange 2. It is in the relaxed state without tools, so without the aid of tools, removable.
  • the hydraulic tensioner 8 has a hydraulic cylinder element 9 which is annular and in which a plurality of cylinder bores 9a are arranged.
  • Fig. 3 also shows that the flange 2, on which the hydraulic tensioning device 8 is arranged, has an annular projection 2b.
  • the outer diameter of the annular projection 2b is slightly smaller than the inner diameter of the annular hydraulic cylinder member 9, so that the hydraulic cylinder element 9 on the annular projection 2b of the flange 2 - guided by means of a linear sliding bearing - and at the same time centered.
  • each cylinder bore 9a a cylindrical single hydraulic piston 10 is arranged in each cylinder bore 9a.
  • Each single hydraulic piston 10 has a collar 23.
  • each cylinder bore 9a can be filled above the piston collar 23 with hydraulic fluid and pressurized.
  • the hydraulic cylinder element 9 lifts and thereby biases the in-line valve unit 1, 1 '.
  • the hydraulic cylinder element 9 is based on the hydraulic fluid to the single hydraulic piston 10, which in turn are supported on the flange 2.
  • This tensioned state of the hydraulic tensioning device 8 is shown for example in FIG.
  • the lock nut 12 can be screwed down so far, until it is also supported on the lower flange 2 (only shown in Fig. 12a).
  • the hydraulic cylinder element 9 is fixed in this way and the hydraulic system of the hydraulic tensioning device 8 can be relieved.
  • the in-line valve unit 1 is thus securely located between the pair of flanges 2 a and 2 b. stressed. Also, Fig. 17 shows this state, wherein the lock nut 12 is not screwed down in Fig. 17 yet.
  • the pressure fluid of the hydraulic tensioning device is first pressurized again. Then the lock nut 12 can be easily solved. If the pressure of the hydraulic fluid in the cylinder bores is then reduced, then a piston return spring 1 1 arranged between the collar 23 of the pistons 10 and a collar 22 of the hydraulic cylinder element 9 ensures that the pistons 10 are displaced into the hydraulic cylinder element 9, as shown in Fig. 18 is shown. In the unstressed state of the hydraulic tensioning device 8 shown there, the in-line valve unit 1 can be displaced. A return connection between the hydraulic cylinder element 9 and the adjacent to the hydraulic tensioning device 8 flange 2 is not present. It has been shown that it is expendable. The hydraulic tensioning device 8 has seals 28 for sealing against pumped liquid (FIG. 12). LIST OF REFERENCES:

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  • Engineering & Computer Science (AREA)
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  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Jib Cranes (AREA)
  • Reciprocating Pumps (AREA)

Abstract

A positive displacement pump having a drive unit (A) and having a pump unit (100) with at least one inline valve unit (1, 1'), wherein each inline valve unit (1, 1') is, in the operating position (B), braced between two flanges (2, 2'), having a valve relocation device (3) by means of which each inline valve unit (1, 1') can be relocated from an operating position (B) into a servicing position (W), wherein the inline valve unit (1, 1') can be relocated along a non-circular movement path.

Description

Verdrängerpumpe  displacement
Die Erfindung betrifft eine Verdrängerpumpe mit einer Antriebseinheit und einer Pumpeneinheit. The invention relates to a positive displacement pump with a drive unit and a pump unit.
Verdrängerpumpen sind in vielfacher Ausführung bereits bekannt. Nachteilig an den bekannten Verdrängerpumpen ist, dass sie sich entweder nicht für hohe Drücke und hohe Volumenströme eignen oder dass sie schwer zu warten sind. Displacement pumps are already known in many designs. A disadvantage of the known positive displacement pumps is that they are either not suitable for high pressures and high volume flows or that they are difficult to maintain.
Die Erfindung hat es sich zur Aufgabe gemacht, eine Verdrängerpumpe zu schaffen, die zumindest hinsichtlich eines der genannten Nachteile verbessert ist. The invention has set itself the task of creating a positive displacement pump which is improved, at least with regard to one of the disadvantages mentioned.
Diese Aufgabe wird durch die in Anspruch 1 wiedergegebene Verdrängerpumpe gelöst. This object is achieved by the reproduced in claim 1 positive displacement pump.
Mit dem Begriff „Verdrängerpumpe" wird im Rahmen dieser Druckschrift insbe- sondere eine Pumpe bezeichnet, die mindestens ein Verdrängerelement in mindestens einem Arbeitsraum aufweist, der von zu pumpendem Medium, also dem Fördermedium, durchströmt wird. Die erfindungsgemäße Verdrängerpumpe weist eine Antriebseinheit auf. Zudem ist eine Pumpeneinheit mit mindestens einer Inline-Ventileinheit vorgesehen. Bevorzugt sind pro Arbeitsraum zwei Inline-Ventileinheiten vorgesehen. Die Inline-Ventileinheit ist in einer Betriebsstellung zwischen zwei Flanschen der Pumpeneinheit verspannt. Dieses Verspannen der Ventileinheiten zwischen zwei Flanschen kann auch als Zwischenflanscheinbau bezeichnet werden. In the context of this document, the term "positive displacement pump" refers in particular to a pump which has at least one displacement element in at least one working space through which the medium to be pumped, that is to say the conveying medium, flows. The positive displacement pump according to the invention has a drive unit. In addition, a pump unit is provided with at least one inline valve unit. Preferably, two inline valve units are provided per working space. The inline valve unit is braced in an operating position between two flanges of the pump unit. This distortion of the valve units between two flanges can also be referred to as Zwischenflanscheinbau.
Die Flansche sind mittels Verbindungs- und/oder Distanzmitteln - bevorzugt in einem unveränderlichen Abstand zueinander - miteinander verbunden. Das Verspannen erfolgt daher bevorzugt nicht durch aufeinander zu Bewegen der Flansche, sondern vorzugsweise durch das Spreizen (anders ausgedrückt: Spannen) einer Spannvorrichtung. Eine Verlagerung der Ventileinheit ist ohne Demontage eines Verbindungsund/oder Distanzmittels möglich. Es muss also zur Verlagerung der Inline- Ventileinheit kein Verbindungs- und/oder Distanzmittel, mittels dessen oder derer die Flansche miteinander verbunden sind, demontiert werden. Hierdurch ist die Wartung der Inline-Ventileinheiten deutlich vereinfacht und beschleunigt. The flanges are interconnected by means of connecting and / or spacing means, preferably at a fixed distance from one another. The clamping is therefore preferably not by successively moving the flanges, but preferably by the spreading (in other words: clamping) of a clamping device. A displacement of the valve unit is possible without disassembly of a connecting and / or spacer means. It must therefore be disassembled for the displacement of the inline valve unit no connection and / or spacer means by means of which or the flanges are connected to each other. As a result, the maintenance of the inline valve units is significantly simplified and accelerated.
Der Abstand zwischen zwei benachbarten Verbindungs- und/oder Distanzmitteln ist bevorzugt größer, als die Außenabmessungen - etwa der Durchmesser - der Inline-Ventileinheit. The distance between two adjacent connection and / or spacer means is preferably greater than the outer dimensions - such as the diameter - of the inline valve unit.
Die Verbindungs- und/oder Distanzmittel können derart angeordnet sein, dass benachbarte Verbindungs- und/oder Distanzmittel stets den gleichen Abstand zueinander aufweisen. Sie können jedoch auch so angeordnet sein, dass sich unter- schiedliche Abstände zwischen benachbarten Verbindungs- und/oder Distanzmitteln ergeben. Wenn die Verbindungs- und/oder Distanzmittel derart angeordnet sind, dass zumindest der größte Abstand (genauer gesagt, die lichte Weite) zwischen zwei benachbarten Verbindungs- und/oder Distanzmitteln größer ist, als die Außenabmessungen - etwa der Durchmesser - der Inline-Ventileinheit, dann ist hierdurch eine Voraussetzung für eine Verlagerung der Inline-Ventileinheit zwischen zwei Verbindungs- und/oder Distanzmitteln hindurch, ohne deren Demontage, geschaffen. The connection and / or spacer means may be arranged such that adjacent connection and / or spacer means always have the same distance from each other. However, they can also be arranged so that different distances between adjacent connecting and / or spacers result. If the connecting and / or spacing means are arranged such that at least the greatest distance (more precisely, the clear width) between two adjacent connecting and / or spacing means is greater than the outer dimensions - such as the diameter - of the in-line valve unit, then this is a prerequisite for a displacement of the inline valve unit between two connection and / or spacer means through, without their disassembly, created.
Es hat sich gezeigt, dass eine belastbare Verbindung der Flansche zueinander und der Inline-Ventileinheiten zwischen den Flanschen auch bei einem derart großen Abstand der Verbindungs- und/oder Distanzmittel möglich ist. It has been found that a resilient connection of the flanges to each other and the inline valve units between the flanges is possible even with such a large distance of the connecting and / or spacer means.
Bevorzugt ist eine Ventilverlagerungseinrichtung vorgesehen, mit deren Hilfe die Inline-Ventileinheit aus einer Betriebsstellung in eine Wartungsstellung verlagerbar ist. Hierbei ist die Ventileinheit bevorzugt auf einer von einer Kreisbahn abweichenden Bewegungsbahn verlagerbar. Preferably, a valve displacement device is provided by means of which the inline valve unit can be displaced from an operating position into a maintenance position. In this case, the valve unit is preferably displaceable on a path deviating from a circular path.
Die Ventilverlagerungseinrichtung ist bevorzugt fest mit der übrigen Pumpe verbunden. The valve displacement device is preferably fixedly connected to the rest of the pump.
Die Inline-Ventileinheit ist bevorzugt mit den Flanschen ausschließlich verspannt. Es sind also bevorzugt keine anderen Befestigungsmittel, wie etwa eine Ver- schraubung der Ventileinheit mit den Flanschen, vorgesehen. Indem die Inline- Ventileinheit bevorzugt also ausschließlich zwischen den Flanschen eingeklemmt ist, ist eine Voraussetzung für eine vereinfachte und schnelle Wartung geschaffen. The inline valve unit is preferably braced exclusively with the flanges. Thus, there are preferably no other fastening means, such as a screwed connection of the valve unit with the flanges provided. By the inline valve unit is therefore preferably clamped exclusively between the flanges, a requirement for a simplified and quick maintenance is created.
Mit dem Begriff „Inline-Ventileinheit" ist im Rahmen dieser Druckschrift insbesondere eine Ventileinheit bezeichnet, die geradlinig durchströmt wird. Mit dem Begriff „geradlinig durchströmt" ist im Rahmen dieser Druckschrift insbesondere gemeint, dass die Strömungsrichtung unmittelbar vor dem Ventil zumindest in etwa der Strömungsrichtung unmittelbar nach dem Ventil entspricht. Dies unterscheidet Inline-Ventileinheiten von Eckventileinheiten, bei denen das Fördermedium beispielsweise auf der Unterseite eintritt und unter einem Winkel von 90 Grad seitlich austritt. Ein Vorteil von Inline-Ventileinheiten gegenüber Eckventileinheiten ist, dass ein Rohrbogen, der die Ventileinheit mit dem Membrangehäuse verbindet, entfallen kann und der mit der Umlenkung verbundene Strömungsverlust und das Schadraumvolumen entfallen. Auch ein bei Eckventileinheiten erhöhter Verschleiß durch ungleichmäßige Belastung entfällt. In the context of this document, the term "in-line valve unit" refers in particular to a valve unit which is flowed through in a straight line. The term "straight through" in this document means in particular that the flow direction immediately before the valve is at least approximately in the direction of flow immediately after the valve corresponds. This distinguishes inline valve units of angle valve units, in which the fluid enters, for example, on the bottom and at an angle of 90 degrees laterally exit. An advantage of in-line valve units over corner valve units is that a pipe bend, which connects the valve unit with the diaphragm housing, can be omitted and eliminates the flow loss associated with the deflection and the dead space volume. Even with corner valve units increased wear due to uneven load is eliminated.
Die Inline-Ventileinheiten werden bevorzugt zumindest in etwa senkrecht durchströmt. Hiermit ist insbesondere gemeint, dass die Strömungsrichtung unmittelbar vor und unmittelbar nach der Ventileinheit zumindest in etwa senkrecht ist. Es ist auch denkbar, dass die Ventileinheiten nicht zumindest in etwa senkrecht durchströmt werden. The inline valve units are preferably flowed through at least approximately vertically. This means in particular that the flow direction is at least approximately perpendicular immediately before and immediately after the valve unit. It is also conceivable that the valve units are not flowed through at least approximately vertically.
Die Pumpe kann genau einen oder mehrere Arbeitsräume aufweisen. Sie kann einfachwirkend oder doppeltwirkend sein. The pump can have exactly one or more working spaces. It can be single-acting or double-acting.
Durch die Verlagerungseinrichtung ist insbesondere die Wartung der Inline- Ventileinheiten deutlich vereinfacht, da das erhebliche Gewicht dieser Einheiten von der Ventilverlagerungseinrichtung getragen wird und nicht etwa von dem Monteur gehalten werden muss. In particular, the maintenance of the in-line valve units is significantly simplified by the displacement device, since the considerable weight of these units is borne by the valve displacement device and does not have to be held by the installer.
Die Verlagerungseinrichtung kann die Wartung der Inline-Ventileinheiten auch dadurch deutlich vereinfachen, indem sie die Ventileinheiten einer Krananlage zugänglich macht. In der Ausführungsform, in der die Inline-Ventileinheiten senkrecht durchströmt sind, sind die beiden Flansche, zwischen denen die Inline-Ventileinheit verspannt ist, bevorzugt zumindest in etwa horizontal ausgerichtet und besonders bevorzugt genau übereinander angeordnet. In der Wartungsstellung ist die Inline-Ventileinheit bevorzugt nicht mehr zwischen den Flanschen angeordnet, sondern von allen Seiten frei zugänglich. The displacement device can also significantly simplify the maintenance of the in-line valve units by making the valve units accessible to a crane installation. In the embodiment in which the inline valve units are flowed through perpendicularly, the two flanges, between which the inline valve unit is braced, are preferably oriented at least approximately horizontally and, with particular preference, are arranged exactly above one another. In the maintenance position, the inline valve unit is preferably no longer arranged between the flanges, but freely accessible from all sides.
Die Inline-Ventileinheit kann auch als Inline-Förderventileinheit bezeichnet werden. Bei der Verdrängerpumpe handelt es sich bevorzugt um eine Spülpumpe für Bohrflüssigkeit oder um eine sogenannte„slurry pump", also eine Pumpe zum Transport von sich in Flüssigkeit befindlichen Feststoffen. Slurry pumps werden auch als Dickstoffpumpen bezeichnet. Als Dickstoffe werden Gemische aus flüssigen und festen Bestandteilen bezeichnet. In einer Ausführungsform erzeugt die Pumpe einen Druck von bis zu 300 bar. Sie hat bevorzugt eine Förderleistung von bis zu 1500 m3/h. Die Leistung der Pumpe beträgt bevorzugt mehr als 500 kW. Sie beträgt in einer Ausführungsform etwa 2400 kW und in einer anderen Ausführungs- form etwa 5000 kW. The in-line valve unit may also be referred to as an in-line delivery valve unit. The displacement pump is preferably a rinsing pump for drilling fluid or a so-called "slurry pump", ie a pump for transporting solids in liquid Slurry pumps are also referred to as thick matter pumps The thick materials are mixtures of liquid and solid components In one embodiment, the pump generates a pressure of up to 300 bar and preferably has a capacity of up to 1500 m 3 / h The power of the pump is preferably more than 500 kW In one embodiment, it is about 2400 kW and In another embodiment, about 5000 kW.
Mit Vorteil ist die Pumpeneinheit eine Flachmembran-Pumpeneinheit. Das Verdrängerelement umfasst also bevorzugt eine Flachmembran. In der bevorzugten Ausführungsform ist die Membran in ihrer Mittelstellung senkrecht angeordnet. Es ist jedoch auch denkbar, dass die Membran in ihrer Mittelstellung nicht senkrecht angeordnet ist. Dies kann beispielsweise durch eine nicht horizontale Aufstellung der Pumpe bewirkt sein. Das Verdrängerelement wird bevorzugt durch eine Arbeitsflüssigkeit betätigt, die ihrerseits vorzugsweise durch einen oszillierenden Kolben einer Antriebseinheit unter Druck gesetzt ist. In der Ausführungsform, in der die Pumpeneinheit eine Flachmembranpumpeneinheit ist, ist der die Arbeitsflüssigkeit unter Druck setzende Kolben durch die Membran vollständig von der zu pumpenden Flüssigkeit ge- trennt. Advantageously, the pump unit is a flat membrane pump unit. The displacement element thus preferably comprises a flat membrane. In the preferred embodiment, the membrane is arranged vertically in its center position. However, it is also conceivable that the membrane is not arranged vertically in its central position. This can be effected for example by a non-horizontal installation of the pump. The displacer element is preferably actuated by a working fluid, which in turn is preferably pressurized by an oscillating piston of a drive unit. In the embodiment in which the pump unit is a flat diaphragm pump unit, the piston pressurizing the working fluid is completely separated from the fluid to be pumped by the diaphragm.
In der Ausführungsform mit Flachmembran ist diese weiter bevorzugt in ihrer Mittelstellung senkrecht zur Bewegungsrichtung des oszillierenden Kolbens der Antriebseinheit angeordnet. Es ist jedoch auch denkbar, dass die Membran in ihrer Mittelstellung nicht senkrecht zur Bewegungsrichtung des oszillierenden Kolbens der Antriebseinheit ausgerichtet ist. Die Verbindungs- und/oder Distanzmittel umfassen bevorzugt Gewindebolzen, die weiter bevorzugt Distanzhülsen durchgreifen. In the embodiment with flat membrane, this is more preferably arranged in its central position perpendicular to the direction of movement of the oscillating piston of the drive unit. However, it is also conceivable that the diaphragm is not aligned in its central position perpendicular to the direction of movement of the oscillating piston of the drive unit. The connection and / or spacer means preferably comprise threaded bolts, which more preferably pass through spacer sleeves.
Die Verbindungs- und/oder Distanzmittel sind bevorzugt derart angeordnet, dass sich unterschiedlichen Abstände zwischen zwei benachbarten Verbindungsund/oder Distanzmitteln ergeben. The connection and / or spacer means are preferably arranged such that different distances result between two adjacent connection and / or spacer means.
Bevorzugt sind die Verbindungs- und/oder Distanzmittel derart angeordnet, dass der größte Abstand zwischen benachbarten Verbindungs- und/oder Distanzmitteln im Bereich der Bewegungsbahn der Inline-Ventileinheit vorgesehen ist. Preferably, the connection and / or spacer means are arranged such that the greatest distance between adjacent connection and / or spacer means is provided in the region of the movement path of the inline valve unit.
Wenn die Verbindungs- und/oder Distanzmittel derart angeordnet sind, dass der größte Abstand (genauer gesagt, die lichte Weite) zwischen zwei benachbarten Verbindungs- und/oder Distanzmitteln lediglich geringfügig größer ist, als die Au- ßenabmessungen - etwa der Durchmesser - der Inline-Ventileinheit, dann ist einerseits eine Voraussetzung für eine kompakte Pumpeneinheit geschaffen. Zudem ist die durch das Verspannen der Ventileinheiten bewirkte Biegebelastung der Flansche verringert, verglichen mit einer Anordnung mit benachbarten Verbindungs- und/oder Distanzmitteln größeren Abstands. Andererseits ist hierdurch weiterhin eine Voraussetzung für eine Verlagerung der Inline-Ventileinheit zwischen zwei Verbindungs- und/oder Distanzmitteln hindurch, ohne deren Demontage, geschaffen. If the connecting and / or spacing means are arranged such that the largest distance (more precisely, the clear width) between two adjacent connecting and / or spacing means is only slightly larger than the outer dimensions - such as the diameter - of the inline Valve unit, then on the one hand a requirement for a compact pump unit is created. In addition, the bending load on the flanges caused by the distortion of the valve units is reduced, compared to an arrangement with adjacent connecting and / or spacing means of greater spacing. On the other hand, this continues to be a prerequisite for a displacement of the inline valve unit between two connecting and / or spacer means, without their disassembly, created.
Der größte Abstand (genauer gesagt, die lichte Weite) zwischen zwei benachbar- ten Verbindungs- und/oder Distanzmitteln kann lediglich weniger als dreißig und insbesondere lediglich weniger als zehn Prozent der Außenabmessungen der Inline-Ventileinheit größer sein, als diese. The greatest distance (more precisely, the clear width) between two adjacent connecting and / or spacing means can be only less than thirty and in particular only less than ten percent of the outer dimensions of the in-line valve unit greater than this.
Bevorzugt sind genau vier Verbindungs- und/oder Distanzmitteln vorgesehen, die in der Form eines Rechtecks angeordnet sind. Eine andere Anzahl an Verbindungs- und/oder Distanzmitteln ist denkbar. In einer denkbaren alternativen Ausführungsform mit gleichen Abständen zwischen Verbindungs- und/oder Distanzmitteln, ist dieser bevorzugt geringfügig größer, als die Außenabmessungen - etwa der Durchmesser - der Inline- Ventileinheit. Preferably, exactly four connecting and / or spacing means are provided, which are arranged in the form of a rectangle. Another number of connecting and / or spacers is conceivable. In a conceivable alternative embodiment with equal distances between connection and / or spacer means, this is preferably slightly larger than the outer dimensions - such as the diameter - of the inline valve unit.
In der Ausführungsform, in der die Inline-Ventileinheit mittels der Ventilverlagerungseinrichtung auf einer von der Kreisbahn abweichenden Bewegungsbahn verlagerbar ist, kann auch bei einem derartig kleinen (größten) Abstand zwischen benachbarten Verbindungs- und/oder Distanzmitteln eine Verlagerung der Inline- Ventileinheit von einer Betriebsstellung in eine Wartungsstellung mittels der Ventilverlagerungseinrichtung erfolgen, ohne dass eine Demontage eines Verbindungs- und/oder Distanzmittels erforderlich ist. In the embodiment in which the in-line valve unit is displaceable by means of the valve displacement device on a movement path deviating from the circular path, even with such a small (largest) distance between adjacent connection and / or spacer means, a displacement of the inline valve unit from an operating position take place in a maintenance position by means of the valve displacement device, without disassembly of a connecting and / or spacer means is required.
Auch kann eine Wartungsstellung erreicht werden, die sich durch einen wün- sehenswert großen Abstand von der übrigen Pumpeneinheit auszeichnet, ohne dass eine aufwändige, ihrerseits viel Baumraum beanspruchende Verlagerungseinrichtung erforderlich wäre. Also, a maintenance position can be achieved, which is characterized by a desirably large distance from the rest of the pump unit, without an elaborate, in turn much tree space-consuming displacement device would be required.
In der bevorzugten Ausführungsform ist die Inline-Ventileinheit verlagerbar, ohne an der Pumpeneinheit - in einer Ausführungsform mit Ausnahme der hydraulischen Spannvorrichtung - eine Schraubverbindung zu Lösen. Es muss also bevorzugt zum Verlagern der Inline-Ventileinheit allenfalls eine Schraubverbindung der hydraulischen Spannvorrichtung gelöst werden. In einer Ausführungsform ist die Inline-Ventileinheit bereits nach dem Lösen eines Gewindeelements der Spannvorrichtung verlagerbar. Um die Inline-Ventileinheit zu verlagern, muss also ein Gewindeelement der Spannvorrichtung - gegebenenfalls nach hydraulischer Entlastung des Gewindeelements - und kein Gewindeelement der übrigen Pumpe, gelöst werden. In the preferred embodiment, the in-line valve unit is displaceable without disengaging a screw connection on the pump unit-in one embodiment, except for the hydraulic tensioner. It must therefore preferably be solved for displacing the inline valve unit at most a screw of the hydraulic tensioning device. In one embodiment, the in-line valve unit is displaceable already after loosening a threaded element of the clamping device. To relocate the inline valve unit, so a threaded element of the clamping device - if necessary after hydraulic relief of the threaded element - and no threaded element of the remaining pump to be solved.
In einer Ausführungsform ist die Inline-Ventileinheit nach dem Lösen eines einzigen Gewindeelements, bevorzugt einer Kontermutter der Spannvorrichtung, verlagerbar. Die Wartung der Inline-Ventileinheiten ist hierdurch erleichtert und beschleunigt. In one embodiment, the inline valve unit after the release of a single threaded element, preferably a lock nut of the clamping device, displaced. The maintenance of the in-line valve units is thereby facilitated and accelerated.
In einer Ausführungsform umfasst die Ventilverlagerungseinrichtung einen in sich gelenkigen Gelenkarm. Mit Vorteil ist der Gelenkarm an einem Verbindungsund/oder Distanzmittel gelagert. Ein zwischen den Flanschen angeordnetes, ausschließlich der Lagerung des Gelenkarmes an der übrigen Pumpeneinheit dienendes Element kann daher, wie bevorzugt, entfallen. In one embodiment, the valve displacement device comprises an articulated articulated arm. Advantageously, the articulated arm is mounted on a connecting and / or spacer means. An arranged between the flanges, only the storage of the articulated arm on the other pump unit serving element can therefore, as preferred, omitted.
Weiter bevorzugt ist der Gelenkarm auch an der Inline-Ventileinheit gelenkig be- festigt.  More preferably, the articulated arm is also hinged to the inline valve unit.
Es hat sich gezeigt, dass durch einen derartigen Gelenkarm eine von einer Kreisbahn abweichende Verlagerbarkeit der Inline-Ventileinheit auf einfache und zuverlässige Art und Weise erreichbar ist. It has been found that a displaceability of the in-line valve unit deviating from a circular path can be achieved in a simple and reliable manner by means of such an articulated arm.
In einer bevorzugten Ausführungsform ist die Inline-Ventileinheit zumindest abschnittsweise auf einer translatorischen Bewegungsbahn verlagerbar. In einer anderen Ausführungsform ist die Inline-Ventileinheit ausschließlich auf einer translatorischen Bewegungsbahn verlagerbar. In a preferred embodiment, the inline valve unit is at least partially displaceable on a translational movement path. In another embodiment, the in-line valve unit is displaceable exclusively on a translatory movement path.
In einer Ausführungsform umfasst die Ventilverlagerungseinrichtung einen Teleskoparm. In one embodiment, the valve displacement device comprises a telescopic arm.
Auch wenn die Ventilverlagerungseinrichtung seitliche Teleskopschienen - bevor- zugt zwei pro Inline-Ventileinheit - umfasst, ist eine geeignete, dann nämlich schubladenartige, Verlagerbarkeit der Ventileinheit gegeben. Even if the valve displacement device comprises lateral telescopic rails - preferably two per inline valve unit - there is a suitable, then drawer-like, displaceability of the valve unit.
Es ist denkbar, an einem einzigen Flanschpaar mehrere Ventileinheiten und mehrere Verlagerungseinrichtungen vorzusehen. Durch das auf diese Weise geschaf- fene Schnellwechselsystem sind die durch die Wartung der Inline-Ventileinheiten bedingten Stillstandzeiten der Pumpe verringert, da die Inline-Ventileinheiten gewartet werden können, während bereits gewartete Inline-Ventileinheiten wieder in die Betriebsstellung verlagert wurden. Mit Vorteil ist mindestens eine Inline-Ventileinheit mittels einer hydraulischen Spannvorrichtung zwischen den Flanschen verspannt. Die Verspannung kann hierdurch auf drehmomentarme und präzise Weise vorgenommen werden. It is conceivable to provide a plurality of valve units and a plurality of displacement devices on a single pair of flanges. The quick-change system created in this way reduces the downtime of the pump due to maintenance of the in-line valve assemblies, as the in-line valve units can be serviced while previously serviced in-line valve assemblies have been returned to the operating position. Advantageously, at least one inline valve unit is clamped by means of a hydraulic tensioning device between the flanges. The tension can thereby be made in a low-torque and precise manner.
Die hydraulische Spannvorrichtung grenzt bevorzugt an einen der Flansche an. Insbesondere in der Ausführungsform, in der die Flansche genau übereinander angeordnet sind, grenzt die hydraulische Spannvorrichtung bevorzugt an den untern Flansch an. Die hydraulische Spannvorrichtung ist vorzugsweise also zwi- sehen dem unteren Flansch und der Inline-Ventileinheit angeordnet. The hydraulic tensioning device preferably adjoins one of the flanges. In particular, in the embodiment in which the flanges are arranged exactly one above the other, the hydraulic tensioning device preferably adjoins the lower flange. The hydraulic tensioning device is therefore preferably arranged between the lower flange and the inline valve unit.
Wenn die hydraulische Spannvorrichtung eine eigenständige Einheit bildet, die bevorzugt nicht fest mit der Pumpeneinheit, etwa einem angrenzenden Flansch, verbunden ist, dann kann sie ohne viel Aufwand getauscht bzw. gewartet werden (z.B. Austausch von Dichtungen). If the hydraulic tensioner is a stand-alone unit, which preferably is not fixedly connected to the pump unit, such as an adjacent flange, then it can be easily replaced or serviced (e.g., replacement of gaskets).
Bevorzugt ist die hydraulische Spannvorrichtung im entspannten Zustand werkzeuglos entfernbar. Eine alternative Ausführungsform, bei der die hydraulische Spannvorrichtung im entspannten Zustand nicht werkzeuglos entfernbar ist, ist insbesondere dann denkbar, wenn die beiden Flansche nicht genau übereinander, sondern etwa schräg übereinander oder beispielsweise nebeneinander angeordnet sind. Es können dann Sicherungsmittel vorgesehen sein, die die hydraulische Spannvor- richtung gegen ein Herausfallen fixieren. Diese Sicherungsmittel können so ausgestaltet sein, dass sie nur mit Werkzeug zu lösen sind. Preferably, the hydraulic tensioning device is removable without tools in the relaxed state. An alternative embodiment, in which the hydraulic tensioning device can not be removed without tools in the relaxed state, is conceivable in particular if the two flanges are not exactly one above the other, but are arranged obliquely one above the other or next to one another, for example. It can then be provided securing means which fix the hydraulic tensioning device against falling out. These securing means can be designed so that they can be solved only with tools.
In einer bevorzugten Ausführungsform weist die hydraulische Spannvorrichtung - besonders bevorzugt genau - ein Hydraulikzylinder-Element auf. In a preferred embodiment, the hydraulic tensioning device - particularly preferably exactly - a hydraulic cylinder element.
Das Hydraulikzylinderelement stellt in einer Ausführungsform genau einen Hydraulikzylinder bereit. In einer Ausführungsform ist genau ein Druckkolben vorgesehen. The hydraulic cylinder element provides exactly one hydraulic cylinder in one embodiment. In one embodiment, exactly one pressure piston is provided.
Es ist denkbar, dass die hydraulische Spannvorrichtung genau einen Ringkolben in genau einem Ringzylinder aufweist. It is conceivable that the hydraulic tensioning device has exactly one annular piston in exactly one annular cylinder.
Das Hydraulikzylinder-Element stellt bevorzugt jedoch eine Vielzahl von zylindrischen Hydraulikzylindern bereit. Und mit Vorteil ist eine Vielzahl von Einzelhydraulikkolben vorgesehen. Die Einzelhydraulikkolben können auch als Druckkolben bezeichnet werden. Bevorzugt sind sie zylindrisch. However, the hydraulic cylinder element preferably provides a plurality of cylindrical hydraulic cylinders. And with advantage, a plurality of single hydraulic piston is provided. The single hydraulic piston can also be referred to as a pressure piston. Preferably, they are cylindrical.
Die hydraulische Spannvorrichtung ist in einer Ausführungsform doppeltwirkend. Die Hydraulikkolben können in dieser Ausführungsform also wahlweise auf zwei verschiedenen Seiten einer Wirkfläche mit Druck beaufschlagt werden und hierdurch in zwei Richtungen bewegt werden. The hydraulic tensioner is double-acting in one embodiment. Thus, in this embodiment, the hydraulic pistons can be pressurized selectively on two different sides of an effective surface and thereby moved in two directions.
In der bevorzugten Ausführungsform ist die hydraulische Spannvorrichtung jedoch einfachwirkend und die Einzelkolben sind jeweils mit einer Kolbenrückholfeder ausgestattet. Es ist denkbar, dass mehrere Konterelemente vorgesehen sind, um die hydraulische Spannvorrichtung in gespanntem Zustand zu fixieren. However, in the preferred embodiment, the hydraulic tensioner is single acting and the individual pistons are each equipped with a piston return spring. It is conceivable that a plurality of counter-elements are provided to fix the hydraulic tensioning device in a tensioned state.
Wenn genau eine Kontermutter vorgesehen ist, um die hydraulische Spannvorrichtung in gespanntem Zustand zu fixieren, dann ist eine besonders schnell und belastbar herstellbare Möglichkeit geschaffen, die hydraulische Spannvorrichtung unter Aufrechterhaltung des gespannten Zustands der Inline-Ventileinheit drucklos zu schalten. If exactly one locknut is provided to fix the hydraulic tensioning device in a tensioned state, then a particularly fast and resilient producible possibility is created to depressurize the hydraulic tensioning device while maintaining the tensioned state of the inline valve unit.
Die Erfindung wird nun anhand von in den Zeichnungen gezeigten Ausführungs- beispielen näher erläutert. Es zeigen: The invention will now be explained in more detail with reference to exemplary embodiments shown in the drawings. Show it:
Fig. 1 eine beispielhafte Verdrängerpumpe mit einer Antriebseinheit und einer Pumpeneinheit; Fig. 2 eine teilgeschnittene Seitendarstellung einer Pumpeneinheit mit oberer Inline-Ventileinheit in Betriebsstellung und unterer Inline- Ventileinheit in Wartungsstellung, wobei die Ventilverlagerungsein- richtung als Gelenkarm ausgeführt ist; 1 shows an exemplary positive displacement pump with a drive unit and a pump unit; 2 shows a partially sectioned side view of a pump unit with upper inline valve unit in the operating position and lower inline valve unit in the maintenance position, the valve displacement device being designed as an articulated arm;
Fig. 3 ein vergrößertes Detail aus Fig. 2; Fig. 3 is an enlarged detail of Fig. 2;
Fig. 4 eine perspektivische Darstellung der in Fig. 2 gezeigten Pumpenein- heit; FIG. 4 is a perspective view of the pump unit shown in FIG. 2; FIG.
Fig. 5 eine Seitendarstellung der in Fig. 2 gezeigten Pumpeneinheit, mit oberer Inline-Ventileinheit in Wartungsstellung und unterer Inline- Ventileinheit in Betriebsstellung; 5 shows a side view of the pump unit shown in FIG. 2, with the upper in-line valve unit in the maintenance position and the lower inline valve unit in the operating position;
Fig. 6 ein vergrößertes Detail aus Fig. 5; Fig. 6 is an enlarged detail of Fig. 5;
Fig. 7 eine perspektivische Darstellung der in Fig. 5 gezeigten Pumpeneinheit ; Fig. 7 is a perspective view of the pump unit shown in Fig. 5;
Fig. 8 eine teilgeschnittene Seitendarstellung einer Pumpeneinheit mit Teleskoparmen; 8 is a partially sectioned side view of a pump unit with telescopic arms.
Fig. 9 ein vergrößertes Detail aus Fig. 8; Fig. 9 is an enlarged detail of Fig. 8;
Fig. 10 eine perspektivische Darstellung der in Fig. 8 gezeigten Pumpeneinheit; FIG. 10 is a perspective view of the pump unit shown in FIG. 8; FIG.
Fig. 1 1 eine teilgeschnittene Seitendarstellung einer Pumpeneinheit, bei der jede Ventilverlagerungseinrichtung zwei Teleskopschienen umfasst; Fig. 1 1 is a partially sectioned side view of a pump unit, wherein each valve displacement device comprises two telescopic rails;
Fig. 12 ein Detail aus Fig. 1 1 ; Fig. 12a eine Ansicht wie in Fig. 12, jedoch in kleinerem Maßstab und mit durch die Kontermutter fixiertem Hydraulikzylinderelement Fig. 12 is a detail of Fig. 1 1; Fig. 12a is a view as in Fig. 12, but on a smaller scale and fixed by the lock nut hydraulic cylinder element
Fig. 13 eine perspektivische Darstellung der in Fig. 1 1 gezeigten Pumpen- einheit; FIG. 13 is a perspective view of the pump unit shown in FIG. 11; FIG.
Fig. 14 eine teilgeschnittene Seitendarstellung einer Pumpeneinheit, bei der an jedem Flanschpaar mehrere Ventileinheiten und mehrere Verlagerungseinrichtungen angeordnet sind; 14 shows a partially sectioned side view of a pump unit, in which a plurality of valve units and a plurality of displacement devices are arranged on each pair of flanges;
Fig. 15 ein Detail aus Fig. 14; Fig. 15 is a detail of Fig. 14;
Fig. 16 eine perspektivische Darstellung einer Pumpeneinheit, bei der an jedem Flanschpaar mehrere Ventileinheiten und mehrere Verlage- rungseinrichtungen vorgesehen sind, wobei eine obere Ventileinheit in Betriebsstellung und eine obere Ventileinheit in Wartungsstellung und beide untere Ventileinheiten in Wartungsstellung sind; 16 shows a perspective illustration of a pump unit in which a plurality of valve units and a plurality of displacement devices are provided on each pair of flanges, with an upper valve unit in the operating position and an upper valve unit in the maintenance position and both lower valve units in the maintenance position;
Fig. 17 eine geschnittene Darstellung einer Inline-Ventileinheit im gespann- ten Zustand; 17 is a sectional view of an in-line valve unit in the clamped state;
Fig. 18 eine geschnittene Darstellung einer Inline-Ventileinheit im ungespannten Zustand. Fig. 1 zeigt eine beispielhafte Verdrängerpumpe mit einer Antriebseinheit A und einer Pumpeneinheit 100. Die Antriebseinheit A umfasst eine Antriebswelle 15, die durch einen nicht gezeigten Motor, beispielsweise einen Elektromotor, in Drehung versetzt wird. Auf der Antriebswelle 15 ist mindestens ein lediglich angedeutetes Zahnrad angeordnet, welches mit mindestens einem wesentlich größeren, eben- falls lediglich angedeuteten Zahnrad der Kurbelwelle 13 kämmt. Die Antriebswelle 15 kann auf beiden Seiten aus dem Gehäuse der Antriebseinheit hervorstehen. Auf der Kurbelwelle ist ein Pleuel 14 angeordnet. Das Pleuel ist mit Hilfe eines Pleuellagers, welches als Wälzlager ausgeführt ist, an der Kurbelwelle gelagert. Das Pleuel überträgt seine Bewegung mittels eines Kreuzkopfes 16 auf eine Kreuzkopfstange 17, die in die Kolbenstange 18 übergeht. Das Kreuzkopflager ist ebenfalls ein Wälzlager. Der Kreuzkopf umfasst zudem Gleitschuhe, welche seiner linearen Lagerung an den Gleitlagerwandungen dienen. An der Kolbenstange ist ein Arbeitsmediums-Kolben 19 angeordnet, der in einem Arbeitsmediums-Zylinder 20 eine geradlinige oszillierende Bewegung ausführt. Fig. 18 is a sectional view of an inline valve unit in the untensioned state. Fig. 1 shows an exemplary positive displacement pump with a drive unit A and a pump unit 100. The drive unit A comprises a drive shaft 15, which is rotated by a motor, not shown, for example, an electric motor in rotation. On the drive shaft 15 at least one only indicated gear is arranged, which meshes with at least one much larger, also just indicated gear of the crankshaft 13. The drive shaft 15 may protrude on both sides of the housing of the drive unit. On the crankshaft a connecting rod 14 is arranged. The connecting rod is mounted on the crankshaft with the help of a connecting rod bearing, which is designed as a rolling bearing. The connecting rod transmits its movement by means of a crosshead 16 to a crosshead rod 17, which merges into the piston rod 18. The crosshead bearing is also a rolling bearing. The crosshead also includes sliding blocks, which serve its linear bearing on the Gleitlagerwandungen. On the piston rod, a working medium piston 19 is arranged, which carries out a rectilinear oscillating movement in a working medium cylinder 20.
An der Antriebseinheit A ist eine Pumpeneinheit 100 vorgesehen. Diese stellt einen an den Arbeitsmediumszylinder 20 angrenzenden Arbeitsmediumsraum be- reit, in dem Arbeitsmedium 21 , beispielsweise Hydrauliköl, vorgesehen ist, welches die Bewegung des Arbeitsmediumskolbens 19 auf eine Flachmembran 24 überträgt. Die Flachmembran 24 ist in Fig. 1 in ihren beiden Extremstellungen dargestellt. Die Flachmembran 24 bildet zusammen mit einem Teil des Membrangehäuses 26 einen Arbeitsraum 25. Dieser ist über Rückschlagventile in Inline- Ventileinheiten 1 , V mit einem in Fig. 1 nicht gezeigten Druckrohr und Saugrohr verbunden. On the drive unit A, a pump unit 100 is provided. This provides a work medium space adjoining the working medium cylinder 20, in which working medium 21, for example hydraulic oil, is provided, which transfers the movement of the working medium piston 19 to a flat membrane 24. The flat membrane 24 is shown in Fig. 1 in its two extreme positions. The flat membrane 24 forms together with a part of the diaphragm housing 26 has a working space 25. This is connected via check valves in inline valve units 1, V with a pressure tube and suction pipe, not shown in Fig. 1.
Eine Drehbewegung der Kurbelwelle führt dazu, dass Arbeitsmedium in dem Arbeitsmediumsraum hin- und herbewegt wird und die Flachmembran damit ab- wechselnd nach rechts und links auslenkt. Die Auslenkung nach in Fig. 1 links führt zu einem Schließen des Auslass-Rückschlagsventils bzw. Druckventils und zu einem Ansaugen von Fördermedium durch das geöffnete Einlass- Rückschlagsventil bzw. Saugventil. Die anschließende Verlagerung des Kolbens gemäß Fig. 1 nach rechts führt zu einem Schließen des Einlass-Rückschlagventils und einer Abgabe eines dem Hubraum bzw. verdrängten Kolbenvolumens entsprechenden Volumens an Fördermedium über das nun geöffnete Auslass- Rückschlagventil und der Verlagerung der Membran bezogen auf Fig. 1 nach rechts. Bei der in Fig. 1 gezeigten Pumpe können nebeneinander drei Pleuel, Arbeitsmediums-Zylinder und Pumpeneinheiten 100 angeordnet sein. Es kann sich also um eine Triplex-Pumpe mit drei Arbeitsräumen handeln. Es können auch mehr oder weniger - etwa genau zwei - Pleuel, Arbeitsmediums-Zylinder und Pumpeneinheiten nebeneinander angeordnet sein. Pro Arbeitsraum 25 sind zwei Inline-Ventileinheiten 1 , 1 ' vorgesehen. A rotational movement of the crankshaft causes the working medium in the working medium space to be moved back and forth, deflecting the flat membrane alternately to the right and left. The deflection to the left in Fig. 1 leads to a closing of the outlet check valve or pressure valve and to a suction of fluid through the open inlet check valve or suction valve. The subsequent displacement of the piston according to FIG. 1 to the right leads to a closing of the inlet check valve and a delivery of a displacement or displaced piston volume corresponding volume of fluid via the now open outlet check valve and the displacement of the membrane with respect to FIG to the right. In the pump shown in FIG. 1, three connecting rods, working medium cylinders and pump units 100 can be arranged side by side. It can therefore be a triplex pump with three working spaces. It can also more or less - about exactly two - connecting rods, working medium cylinders and pump units are arranged side by side. Per working space 25, two inline valve units 1, 1 'are provided.
Die Inline-Ventileinheiten 1 , 1 ' werden geradlinig von Fördermediunn durchflössen. Die Strömungsrichtung unmittelbar vor dem Ventil entspricht also zumindest in etwa der Strömungsrichtung unmittelbar nach dem Ventil . Eine Richtungsänderung des Fördermediums findet im Bereich dieser Ventile nicht statt. The inline valve units 1, 1 'are traversed in a straight line by conveying medium. The flow direction immediately before the valve thus corresponds at least approximately to the flow direction immediately after the valve. A change of direction of the pumped medium does not take place in the area of these valves.
Etwa Fig . 2 zeigt, dass in der Betriebsstellung jede Inline-Ventileinheit 1 , 1 ' zwischen zwei Flanschen 2, 2' verspannt ist. Zwei parallel und beabstandet zueinan- der angeordnete Flansche 2, 2' bilden also ein Flanschpaar 2a, zwischen dem die Inline-Ventileinheit 1 , 1 ' verspannt ist. Fig. 2 zeigt auch, dass eine fest mit der übrigen Pumpe verbundene Ventilverlagerungseinrichtung 3 vorgesehen ist, mit deren Hilfe jede Inline-Ventileinheit 1 , 1 ' aus einer Betriebsstellung B, in der die Inline-Ventileinheit 1 zwischen dem Flanschpaar 2a verspannt ist in eine Wartungs- Stellung W, in der die Inline-Ventileinheit 1 ' nicht zwischen dem Flanschpaar angeordnet ist, verlagerbar ist. Approx. Fig. 2 shows that in the operating position each inline valve unit 1, 1 'is braced between two flanges 2, 2'. Two flanges 2, 2 'which are arranged parallel to one another and spaced from one another thus form a pair of flanges 2a, between which the inline valve unit 1, 1' is braced. FIG. 2 also shows that a valve displacement device 3 fixedly connected to the rest of the pump is provided, with the aid of which each inline valve unit 1, 1 'is clamped from an operating position B, in which the inline valve unit 1 is braced between the flange pair 2 a Maintenance position W, in which the inline valve unit 1 'is not disposed between the pair of flanges, is displaced.
Etwa die Fig. 2 und 4 zeigen, dass die Flansche 2, 2' in allen gezeigten Ausführungsbeispielen mittels Verbindungs- und/oder Distanzmitteln 4 miteinander ver- bunden sind. Die Verbindungs- und/oder Distanzmittel 4 sind in allen gezeigten Ausführungsbeispielen als Verbindungs- und Distanzmittel 4 ausgeführt, die die Flansche in einem vorgegebenen, unveränderlichen Abstand fest miteinander verbinden. Als Verbindungsmittel weisen die Verbindungs- und Distanzmittel 4 in allen gezeigten Ausführungsbeispielen mit den Flanschen 2, 2' mittels Muttern ver- schraubte Gewindebolzen auf. Als Distanzmittel weisen sie zwischen den Flanschen angeordnete Distanzhülsen auf, die von den Gewindebolzen durchgriffen sind. For example, FIGS. 2 and 4 show that the flanges 2, 2 'are connected to one another in all exemplary embodiments shown by means of connecting and / or spacing means 4. The connecting and / or spacing means 4 are designed in all embodiments shown as connecting and spacer means 4, which connect the flanges firmly together at a predetermined, fixed distance. As connecting means, the connecting and spacing means 4 in all the exemplary embodiments shown have threaded bolts screwed to the flanges 2, 2 'by means of nuts. As a spacer they have between the flanges arranged spacers, which are penetrated by the threaded bolt.
Beispielsweise Fig . 7 zeigt, dass pro Ventileinheit 1 , 1 ' vier Verbindungs- und Dis- tanzmittel 4 vorgesehen sind, die in der Form eines Rechtecks angeordnet sind. Es ergeben sich daher zwei unterschiedlich große Abstände K, L zwischen benachbarten Verbindungs- und Distanzmittel 4. Der Fig. ist auch zu entnehmen, dass die Verbindungs- und Distanzmittel 4 so angeordnet sind, dass der größere der beiden Abstände L sich senkrecht zur Verlagerungsrichtung V der Inline- Ventileinheit 1 , 1 ' erstreckt und geringfügig größer ist, als die Außenabmessungen M der Inline-Ventileinheit 1 . Der größte Abstand L zwischen zwei benachbarten Verbindungs- und Distanzmitteln 4 ist also im Bereich der Bewegungsbahn der Inline-Ventileinheit 1 , 1 ' vorgesehen. Der senkrecht hierzu verlaufende kleinere Abstand K zwischen zwei benachbarten Verbindungs- und Distanzmitteln 4 kann kleiner sein, als die Außenabmessungen M der Inline-Ventileinheit 1 (Fig. 5). For example, FIG. 7 shows that four connecting and stopping means 4, which are arranged in the form of a rectangle, are provided per valve unit 1, 1 '. There are therefore two different distances K, L between adjacent connection and spacer means 4. The Fig. It can also be seen that the connecting and spacer means 4 are arranged so that the larger the two distances L is perpendicular to the direction of displacement V of the inline valve unit 1, 1 'extends and is slightly larger than the outer dimensions M of the inline valve unit. 1 The greatest distance L between two adjacent connecting and spacing means 4 is thus provided in the region of the movement path of the inline valve unit 1, 1 ' . The perpendicularly running smaller distance K between two adjacent connection and spacer means 4 may be smaller than the outer dimensions M of the inline valve unit 1 (FIG. 5).
Die Verlagerungsrichtung V symbolisiert gleichzeitig eine Bewegungsbahn einer Inline-Ventileinheit 1 . Diese weicht von einer Kreisbahn ab. Sie kann, wie in Fig. 7 gezeigt, zumindest abschnittsweise geradlinig sein. The displacement direction V simultaneously symbolizes a movement path of an inline valve unit 1. This deviates from a circular path. It can, as shown in Fig. 7, at least in sections be rectilinear.
Durch den geringen Abstand zwischen den Verbindungs- und Distanzmitteln 4 ist eine kompakte Bauweise erzielt und die Biegebelastung der Flansche 2, 2' verrin- gert. Da zumindest abschnittsweise eine geradlinige Bewegungsbahn der Inline- Ventileinheiten 1 , 1 ' möglich ist, können diese dennoch zwischen zwei Verbindungs- und Distanzmitteln 4 herausbewegt werden, ohne dass eine Demontage von Bewegungs- und Distanzmitteln 4 erforderlich wäre. In dem in den Fig. 2 bis 7 gezeigten Ausführungsbeispiel umfasst die Ventilverlagerungseinrichtung 3 einen in sich gelenkigen Gelenkarm 5. Due to the small distance between the connecting and spacing means 4, a compact construction is achieved and the bending load of the flanges 2, 2 'is reduced. Since at least sections a linear trajectory of the in-line valve units 1, 1 'is possible, they can still be moved out between two connecting and spacer means 4, without disassembly of movement and spacers 4 would be required. In the embodiment shown in FIGS. 2 to 7, the valve displacement device 3 comprises a hinged articulated arm 5.
In dem in den Fig. 8 bis 10 gezeigten Ausführungsbeispiel umfasst die Ventilverlagerungseinrichtung 3 dagegen einen Teleskoparm 6. In the embodiment shown in FIGS. 8 to 10, on the other hand, the valve displacement device 3 comprises a telescopic arm 6.
In dem in den Fig . 1 1 bis 13 gezeigten Ausführungsbeispiel umfasst die Ventilverlagerungseinrichtung 3 zwei Teleskopschienen 7, 7'. In the in Figs. 1 to 13 shown embodiment, the valve displacement device 3 comprises two telescopic rails 7, 7 ' .
In dem in den Fig. 14 bis 16 gezeigten Ausführungsbeispiel sind an jedem Flanschpaar 2a mehrere Inline-Ventileinheiten 1 , 1 ', nämlich zwei Inline- Ventileinheiten 1 , 1 ' und mehrere Verlagerungseinrichtungen 3, nämlich zwei Verlagerungseinrichtungen 3, vorgesehen. Die Verlagerungseinrichtung 3 umfasst in diesem Ausführungsbeispiel, wie in dem in den Fig. 2 bis 7 gezeigten Ausführungsbeispiel, einen Gelenkarm 5. In the exemplary embodiment shown in FIGS. 14 to 16, a plurality of inline valve units 1, 1 ', namely two inline valve units 1, 1' and a plurality of displacement devices 3, namely two displacement devices 3, are provided on each flange pair 2a. The displacement device 3 comprises in This embodiment, as in the embodiment shown in FIGS. 2 to 7, an articulated arm. 5
In allen gezeigten Ausführungsbeispielen sind die Inline-Ventileinheiten 1 , 1 ' je- weils mittels einer hydraulischen Spannvorrichtung 8 zwischen den Flanschen 2, 2' ausschließlich verspannt. In all the exemplary embodiments shown, the in-line valve units 1, 1 'are each clamped exclusively by means of a hydraulic tensioning device 8 between the flanges 2, 2'.
Etwa Fig . 3 zeigt, dass die hydraulische Spannvorrichtung 8 eine eigenständige Einheit bildet, die nicht fest mit der Pumpeneinheit 100, etwa dem angrenzenden unteren Flansch 2, verbunden ist. Sie ist im entspannten Zustand werkzeuglos, also ohne die Zuhilfenahme von Werkzeug, entfernbar. Die hydraulische Spannvorrichtung 8 weist ein Hydraulikzylinderelement 9 auf, das ringförmig ist und in dem eine Vielzahl von Zylinderbohrungen 9a angeordnet sind. Fig. 3 zeigt auch, dass der Flansch 2, auf dem die hydraulische Spannvorrichtung 8 angeordnet ist, einen ringförmigen Vorsprung 2b aufweist. Der Außendurchmesser des ringförmigen Vorsprungs 2b ist geringfügig kleiner, als der Innendurchmesser des ringförmigen Hydraulikzylinderelements 9, so dass das Hydraulikzylinderelement 9 auf dem ringförmigen Vorsprung 2b des Flansches 2 - im Wege einer Lineargleitlagerung - geführt und gleichzeitig zentriert ist. Approx. Fig. 3 shows that the hydraulic tensioning device 8 forms a self-contained unit which is not fixedly connected to the pump unit 100, such as the adjacent lower flange 2. It is in the relaxed state without tools, so without the aid of tools, removable. The hydraulic tensioner 8 has a hydraulic cylinder element 9 which is annular and in which a plurality of cylinder bores 9a are arranged. Fig. 3 also shows that the flange 2, on which the hydraulic tensioning device 8 is arranged, has an annular projection 2b. The outer diameter of the annular projection 2b is slightly smaller than the inner diameter of the annular hydraulic cylinder member 9, so that the hydraulic cylinder element 9 on the annular projection 2b of the flange 2 - guided by means of a linear sliding bearing - and at the same time centered.
In jeder Zylinderbohrung 9a ist ein zylindrischer Einzelhydraulikkolben 10 angeordnet. Jeder Einzelhydraulikkolben 10 weist einen Bund 23 auf. Durch eine Hydraulikleitung 27 kann jede Zylinderbohrung 9a oberhalb des Kolbenbundes 23 mit Druckflüssigkeit gefüllt und mit Druck beaufschlagt werden. Daraufhin hebt sich das Hydraulikzylinderelement 9 und spannt dadurch die Inline-Ventileinheit 1 , 1 '. Das Hydraulikzylinderelement 9 stützt sich dabei über die Druckflüssigkeit auf den Einzelhydraulikkolben 10 ab, die sich ihrerseits auf dem Flansch 2 abstützen. Dieser gespannte Zustand der hydraulischen Spannvorrichtung 8 ist beispielsweise in Fig. 3 gezeigt. Daraufhin kann die Kontermutter 12 soweit heruntergeschraubt werden, bis sie sich ebenfalls auf dem unteren Flansch 2 abstützt (lediglich in Fig. 12a gezeigt). Das Hydraulikzylinderelement 9 ist auf diese Weise fixiert und das Hydrauliksystem der hydraulischen Spannvorrichtung 8 kann entlastet werden. Die Inline-Ventileinheit 1 ist auf diese Weise sicher zwischen dem Flanschpaar 2a ge- spannt. Auch Fig. 17 zeigt diesen Zustand, wobei die Kontermutter 12 auch in Fig. 17 noch nicht heruntergeschraubt ist. In each cylinder bore 9a, a cylindrical single hydraulic piston 10 is arranged. Each single hydraulic piston 10 has a collar 23. By a hydraulic line 27, each cylinder bore 9a can be filled above the piston collar 23 with hydraulic fluid and pressurized. As a result, the hydraulic cylinder element 9 lifts and thereby biases the in-line valve unit 1, 1 '. The hydraulic cylinder element 9 is based on the hydraulic fluid to the single hydraulic piston 10, which in turn are supported on the flange 2. This tensioned state of the hydraulic tensioning device 8 is shown for example in FIG. Then the lock nut 12 can be screwed down so far, until it is also supported on the lower flange 2 (only shown in Fig. 12a). The hydraulic cylinder element 9 is fixed in this way and the hydraulic system of the hydraulic tensioning device 8 can be relieved. The in-line valve unit 1 is thus securely located between the pair of flanges 2 a and 2 b. stressed. Also, Fig. 17 shows this state, wherein the lock nut 12 is not screwed down in Fig. 17 yet.
Die Einzelhydraulikkolben 10 weisen, wie etwa die Figuren 17 und 18 zeigen, von der jeweiligen Inline-Ventileinheit 1 , 1 ' weg und das Hydraulikzylinderelennent 9 ist der Inline-Ventileinheit 1 , 1 ' zugewandt und steht in Kontakt mit dieser. Eine um 180 Grad verdrehte Anordnung, bei der die Einzelhydraulikkolben 10 der jeweiligen Inline-Ventileinheit 1 , 1 ' zugewandt sind und das Hydraulikzylinderelement 9 von der Inline-Ventileinheit 1 , 1 ' weg weist, ist denkbar. The individual hydraulic pistons 10, as shown in FIGS. 17 and 18, point away from the respective in-line valve unit 1, 1 'and the hydraulic cylinder element 9 faces the inline valve unit 1, 1 ' and is in contact therewith. A twisted by 180 degrees arrangement in which the individual hydraulic piston 10 of the respective inline valve unit 1, 1 'are facing and the hydraulic cylinder element 9 of the inline valve unit 1, 1 ' away, is conceivable.
Zum Entspannen der hydraulischen Spannvorrichtung 8, um die Inline- Ventileinheit 1 , V verlagern und warten zu können, wird zunächst erneut die Druckflüssigkeit der hydraulischen Spannvorrichtung unter Druck gesetzt. Daraufhin kann die Kontermutter 12 leicht gelöst werden. Wenn dann der Druck der Hyd- raulikflüssigkeit in den Zylinderbohrungen abgebaut wird, dann sorgt eine zwischen dem Bund 23 der Kolben 10 und einem Bund 22 des Hydraulikzylinderelements 9 angeordnete Kolbenrückholfeder 1 1 dafür, dass sich die Kolben 10 in das Hydraulikzylinderelement 9 hineinverlagern, wie dies in Fig. 18 gezeigt ist. In dem dort gezeigten, ungespannten Zustand der hydraulischen Spannvorrichtung 8 kann die Inline-Ventileinheit 1 verlagert werden. Eine Rückholverbindung zwischen dem Hydraulikzylinderelement 9 und dem an die hydraulische Spannvorrichtung 8 angrenzenden Flansch 2 ist nicht vorhanden. Es hat sich gezeigt, dass sie entbehrlich ist. Die hydraulischen Spannvorrichtung 8 weist Dichtungen 28 auf, zum Abdichteten gegen Förderflüssigkeit (Fig. 12). Bezuqszeichenliste: To relax the hydraulic tensioning device 8 in order to be able to displace and service the in-line valve unit 1, V, the pressure fluid of the hydraulic tensioning device is first pressurized again. Then the lock nut 12 can be easily solved. If the pressure of the hydraulic fluid in the cylinder bores is then reduced, then a piston return spring 1 1 arranged between the collar 23 of the pistons 10 and a collar 22 of the hydraulic cylinder element 9 ensures that the pistons 10 are displaced into the hydraulic cylinder element 9, as shown in Fig. 18 is shown. In the unstressed state of the hydraulic tensioning device 8 shown there, the in-line valve unit 1 can be displaced. A return connection between the hydraulic cylinder element 9 and the adjacent to the hydraulic tensioning device 8 flange 2 is not present. It has been shown that it is expendable. The hydraulic tensioning device 8 has seals 28 for sealing against pumped liquid (FIG. 12). LIST OF REFERENCES:
100 Pumpeneinheit 100 pump unit
1 , r Inline-Ventileinheit  1, r inline valve unit
2, 2' Flansch  2, 2 'flange
2a Flanschpaar  2a flange pair
2b ringförmiger Vorsprung  2b annular projection
3 Ventilverlagerungseinrichtung 3 valve displacement device
4 Verbindungs- und/oder Distanzmittel4 connecting and / or spacer means
5 in sich gelenkiger Gelenkarm 5 articulated articulated arm
6 Teleskoparm  6 telescopic arm
7, 7' Teleskopschienen  7, 7 'telescopic rails
8 hydraulische Spannvorrichtung 8 hydraulic tensioning device
9 Hydraulikzylinderelement 9 hydraulic cylinder element
9a Zylinderbohrungen  9a cylinder bores
10 Einzelhydraulikkolben  10 single hydraulic pistons
1 1 Kolbenrückholfeder  1 1 piston return spring
12 Kontermutter  12 locknut
13 Kurbelwelle  13 crankshaft
14 Pleuel  14 connecting rods
15 Antriebswelle  15 drive shaft
16 Kreuzkopf  16 crosshead
17 Kreuzkopfstange  17 crosshead bar
18 Kolbenstange  18 piston rod
19 Arbeitsmediumskolben  19 working fluid piston
20 Arbeitsmediumszylinder  20 working medium cylinder
21 Arbeitsmedium  21 working medium
22 Bund des Zylinders  22 collar of the cylinder
23 Bund des Kolbens  23 collar of the piston
24 Flachmembran  24 flat membrane
25 Arbeitsraum  25 workspace
26 Membrangehäuse 27 Hydraulikleitungen 26 membrane housing 27 hydraulic lines
28 Dichtungen  28 seals
A Antriebseinheit A drive unit
B Betriebsstellung B operating position
K kleinerer Abstand  K smaller distance
L lichte Weite und größerer Abstand L clear width and greater distance
M Außenabmessungen M outside dimensions
W Wartungsstellung  W maintenance position
V Verlagerungsrichtung V displacement direction

Claims

Patentansprüche: Patent claims:
Verdrängerpumpe mit einer Antriebseinheit (A) und einer Pumpeneinheit (100) mit mindestens einer Inline-Ventileinheit (1 , 1 '), Positive displacement pump with a drive unit (A) and a pump unit (100) with at least one inline valve unit (1, 1 '),
wobei die Inline-Ventileinheit (1 , 1 ') in einer Betriebsstellung (B) zwischen zwei Flanschen (2, 2') verspannt ist wherein the inline valve unit (1, 1 ') is clamped between two flanges (2, 2') in an operating position (B).
und die Flansche (2, and the flanges (2,
2') mittels Verbindungs- und/oder Distanzmitteln (4) miteinander verbunden sind 2') are connected to one another by means of connecting and/or spacing means (4).
wobei eine Verlagerung der Inline-Ventileinheit (1 , 1 ') ohne Demontage eines Verbindungs- und/oder Distanzmittels (4) möglich ist. wherein a displacement of the inline valve unit (1, 1 ') is possible without dismantling a connecting and/or spacing means (4).
Pumpe nach Anspruch 1 , dadurch gekennzeichnet, dass der Abstand (L) zwischen zwei benachbarten Verbindungs- und/oder Distanzmitteln (4) größer ist, als die Außenabmessungen (M) der Inline-Ventileinheit (1 , 1 ') und die Pumpeneinheit (100) eine Flachmembran-Pumpeneinheit ist. Pump according to claim 1, characterized in that the distance (L) between two adjacent connecting and/or spacing means (4) is larger than the external dimensions (M) of the inline valve unit (1, 1 ' ) and the pump unit (100 ) is a flat diaphragm pump unit.
Pumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass eine Ventilverlagerungseinrichtung Pump according to claim 1 or 2, characterized in that a valve displacement device
(3), vorgesehen ist, mit deren Hilfe die Inline- Ventileinheit (1 , 1 ') aus der Betriebsstellung (B) in eine Wartungsstellung (W) verlagerbar ist, wobei die Inline-Ventileinheit (1 , 1 ') auf einer von einer Kreisbahn abweichenden Bewegungsbahn verlagerbar ist. (3), is provided, with the help of which the inline valve unit (1, 1 ') can be moved from the operating position (B) to a maintenance position (W), the inline valve unit (1, 1 ') being on one of one Circular path deviating trajectory can be moved.
Pumpe nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Verbindungs- und/oder Distanzmittel (4) derart angeordnet sind, dass der größte Abstand (L) zwischen zwei benachbarten Verbindungs- und/oder Distanzmitteln Pump according to one of claims 1 to 3, characterized in that the connecting and/or spacing means (4) are arranged such that the greatest distance (L) is between two adjacent connecting and/or spacing means
(4) geringfügig größer ist, als die Außenabmessungen der Inline- Ventileinheit (1 , 1 '). (4) is slightly larger than the external dimensions of the inline valve unit (1, 1 ').
Pumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Ventilverlagerungseinrichtung (3) einen in sich gelenkigen Gelenkarm Pump according to one of claims 1 to 4, characterized in that the valve displacement device (3) has an articulated arm
(5) umfasst. (5) includes.
6. Pumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Ventilverlagerungseinrichtung (3) einen Teleskoparm (6) umfasst. 6. Pump according to one of claims 1 to 5, characterized in that the valve displacement device (3) comprises a telescopic arm (6).
7. Pumpe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Ventilverlagerungseinrichtung (3) zwei Teleskopschienen (7, 7') umfasst. 7. Pump according to one of claims 1 to 6, characterized in that the valve displacement device (3) comprises two telescopic rails (7, 7 ').
8. Pumpe nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass an einem einzigen Flanschpaar (2a) mehrere Inline-Ventileinheiten (1 , 1 ') und mehrere Verlagerungseinrichtungen (3) vorgesehen sind. 8. Pump according to one of claims 1 to 7, characterized in that several inline valve units (1, 1 ') and several displacement devices (3) are provided on a single pair of flanges (2a).
9. Pumpe nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Inline-Ventileinheit (1 , 1 ') mittels einer hydraulischen Spannvorrichtung (8) zwischen den Flanschen (2, 2') verspannt ist und die hydraulische Spannvorrichtung (8) eine eigenständige Einheit bildet, die nicht fest mit der Pumpeneinheit (100) verbunden ist. 9. Pump according to one of claims 1 to 8, characterized in that the inline valve unit (1, 1 ') is clamped between the flanges (2, 2') by means of a hydraulic clamping device (8) and the hydraulic clamping device (8) forms an independent unit that is not firmly connected to the pump unit (100).
10. Pumpe nach Anspruch 9, dadurch gekennzeichnet, dass die hydraulische Spannvorrichtung (8) ein Hydraulikzylinder-Element (9) und eine Vielzahl von Einzelhydraulikkolben (10) aufweist und die hydraulische Spannvorrichtung (8) doppelt wirkend ist oder die Einzelhydraulikkolben (10) mittels einer Kolbenrückholfeder (1 1 ) ausgestattet sind und genau eine Kontermutter (12) vorgesehen ist, um die hydraulische Spannvorrichtung (8) in gespanntem Zustand zu fixieren. 10. Pump according to claim 9, characterized in that the hydraulic tensioning device (8) has a hydraulic cylinder element (9) and a plurality of individual hydraulic pistons (10) and the hydraulic tensioning device (8) is double-acting or the individual hydraulic pistons (10) by means of a piston return spring (1 1) are equipped and exactly one lock nut (12) is provided to fix the hydraulic tensioning device (8) in the tensioned state.
EP14736732.0A 2013-08-09 2014-07-02 Positive displacement pump Active EP3030784B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013108672.1A DE102013108672A1 (en) 2013-08-09 2013-08-09 displacement
PCT/EP2014/064070 WO2015018570A1 (en) 2013-08-09 2014-07-02 Positive displacement pump

Publications (2)

Publication Number Publication Date
EP3030784A1 true EP3030784A1 (en) 2016-06-15
EP3030784B1 EP3030784B1 (en) 2019-09-04

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ID=51162763

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EP14736732.0A Active EP3030784B1 (en) 2013-08-09 2014-07-02 Positive displacement pump

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Country Link
US (1) US10190583B2 (en)
EP (1) EP3030784B1 (en)
CN (1) CN105658961B (en)
AU (1) AU2014304881B2 (en)
DE (1) DE102013108672A1 (en)
WO (1) WO2015018570A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018091306A1 (en) 2016-11-15 2018-05-24 Mhwirth Gmbh Method for operating a piston pump, and piston pump
US11221004B2 (en) * 2017-07-12 2022-01-11 Blue-White Industries, Ltd. Multiple diaphragm pump

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1528456A1 (en) * 1966-01-12 1970-09-03 Busse Dipl Ing Oswald Valve arrangement and design for positive displacement pump
US4491345A (en) * 1981-08-06 1985-01-01 Hughes Tool Company Marine conductor coupling
US4471799A (en) * 1982-01-11 1984-09-18 Grove Valve And Regulator Company Line removable ball valve
DE3430721A1 (en) 1984-08-21 1986-03-06 Alldos Eichler Kg, 7507 Pfinztal DIAPHRAGM PUMP, ESPECIALLY FOR DOSING LIQUIDS
US6988626B2 (en) * 1998-07-31 2006-01-24 Varghese Paily T Computer component rack mounting arrangement
US20030032506A1 (en) * 2001-08-07 2003-02-13 Tien-Sheng Chi Elevation-adjustable baseball batting-training apparatus
DE102011001087A1 (en) * 2011-03-04 2012-09-06 Feluwa Pumpen Gmbh Double hose-diaphragm process pump
AR086188A1 (en) * 2011-04-20 2013-11-27 Spm Flow Control Inc AN ALTERNATIVE PUMP
BR112014007364B1 (en) * 2011-09-30 2021-09-28 Aker Wirth Gmbh POSITIVE DISPLACEMENT PUMP DESIGNED AS A PISTON DIAPHRAGM PUMP
CN202690386U (en) 2012-07-23 2013-01-23 上海绩优机电设备有限公司 Diaphragm pump

Also Published As

Publication number Publication date
US20160177946A1 (en) 2016-06-23
US10190583B2 (en) 2019-01-29
CN105658961A (en) 2016-06-08
WO2015018570A1 (en) 2015-02-12
AU2014304881A1 (en) 2016-03-03
DE102013108672A1 (en) 2015-02-12
CN105658961B (en) 2017-11-21
AU2014304881B2 (en) 2018-05-10
EP3030784B1 (en) 2019-09-04

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