EP0282956B1 - Container pump - Google Patents

Container pump Download PDF

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Publication number
EP0282956B1
EP0282956B1 EP88104035A EP88104035A EP0282956B1 EP 0282956 B1 EP0282956 B1 EP 0282956B1 EP 88104035 A EP88104035 A EP 88104035A EP 88104035 A EP88104035 A EP 88104035A EP 0282956 B1 EP0282956 B1 EP 0282956B1
Authority
EP
European Patent Office
Prior art keywords
sliding sleeve
base plate
outer casing
inlet openings
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88104035A
Other languages
German (de)
French (fr)
Other versions
EP0282956A2 (en
EP0282956B2 (en
EP0282956A3 (en
Inventor
Karl Lutz
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.)
Lutz Pumpen GmbH and Co KG
Original Assignee
Karl Lutz Firma
Lutz Pumpen GmbH and Co KG
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
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Application filed by Karl Lutz Firma, Lutz Pumpen GmbH and Co KG filed Critical Karl Lutz Firma
Priority to AT88104035T priority Critical patent/ATE63978T1/en
Publication of EP0282956A2 publication Critical patent/EP0282956A2/en
Publication of EP0282956A3 publication Critical patent/EP0282956A3/en
Publication of EP0282956B1 publication Critical patent/EP0282956B1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • F04D13/06Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08Units comprising pumps and their driving means the pump being electrically driven for submerged use

Definitions

  • the invention relates to a barrel pump with a pump rotor driven by a motor via a rotor shaft, with which the liquid is pumped up in an annular channel lying between a support tube for the rotor shaft and a tubular housing jacket to an outlet connected to the latter, the liquid being drawn through inlet openings is suckable at the lower end of the housing shell.
  • drum pumps of this type (DE-A 34 12 873), especially when it comes to environmentally harmful liquids, there are two problems.
  • One problem is that moving the pump from one barrel to another with the engine running is not possible because the liquid leaks from the open pump. Such a transfer is necessary if a very quick emptying of several drums is required.
  • the second problem is that the barrels cannot be completely emptied and, because of the inlet openings arranged on the circumference of the housing shell at a distance from its lower end, a residual amount of liquid corresponding to the distance of the openings to the end of the housing shell remains in the barrel. In addition to this remaining amount, there is the amount of liquid in the pump that runs back into the barrel when the engine is switched off. The remaining amount in this way affects the recycling of the barrels.
  • the object of the invention is to reduce the residual amount remaining in the barrel to a minimum value.
  • the inlet openings are provided directly above the base plate.
  • the very last remaining liquid can be removed from the barrel, since the base plate is relatively thin or at least bevelled on its outer edge and can therefore be made very thin.
  • the sliding sleeve can be pushed into the closed position by a spring supported on a pump-fixed part and by the pump weight when it is placed on the drum base in the open position, the opening and closing of the pump inlet is brought about without additional manual actuation, and it is opened by the weight of the pump against the action of the spring, while the spring moves the sliding sleeve when the pump is lifted and thus closes the pump.
  • the amount of liquid contained in the pump can therefore neither run back into the barrel nor pollute the surroundings of the barrel when the pump is moved to another barrel.
  • a particularly advantageous embodiment results according to the invention in that the base plate is attached to the housing shell and the base plate protrudes beyond the housing shell in the radial direction, that the inlet openings in the housing shell are provided directly at the lower end of the same directly above the base plate that the sliding sleeve with its lower edge can be pressed sealingly against the base plate and that protruding pressure pieces are provided on the sliding sleeve downward in the closed position above the base plate, which are in alignment with the underside of the base plate in the fully open position of the sliding sleeve and which project beyond the base plate in the closed position Length corresponds essentially to the height of the inlet openings.
  • a structurally simple solution results according to the invention in that the spring surrounding the housing shell is supported on the one hand on a flange arranged on the housing shell and on the other hand on the upper edge of the sliding sleeve.
  • the sliding sleeve can be displaced from above by an actuating device protruding from the barrel, which actuating device can be used alone or in conjunction with the spring explained above, so that the automatic actuation effected by the spring can also be influenced by manual operation.
  • the sliding sleeve can have inlet openings distributed around the circumference at a distance from its lower edge and above that Inlet openings can be provided with an inner shoulder which, in the closed position, lies sealingly against the base plate, which protrudes beyond the housing jacket. This leaves a closed ring jacket at the lower end of the sliding sleeve, in which damage is practically impossible even when the sliding sleeve is placed very hard on the barrel bottom.
  • This pump is therefore suitable for those applications in which first and foremost it is a matter of very quick emptying of several drums with the pump motor running and not so much of the remaining amount, which is larger due to the ring of the sliding sleeve below the inlet openings than in the case above explained execution possibility is.
  • a modified design which is even more robust, results from the fact that the sliding sleeve has at its lower end an inner flange or base for supporting the spring, which is supported with its other end on the underside of the base plate and that on the circumference of the sliding sleeve inlet openings are provided in the lower part thereof.
  • the bottom of this sliding sleeve can be designed to be particularly stable and, in addition, the spring is arranged in a protected manner, so that damage cannot occur here either.
  • a particularly preferred embodiment of the barrel pump which enables a barrel to be emptied practically completely, is characterized in that the lower end of the housing shell, which has the inlet openings, tapers below the pump protector at a distance from it at a total opening angle of less than 180 ° and with the Base plate, which has a smaller diameter than the housing shell, is connected in a sealed manner except for the inlet openings, that the inlet openings are provided in the tapering part, that the sliding sleeve is guided in a sealed manner in the interior of the housing shell and is tapered like a nozzle in its lower region that the mouth of the sliding sleeve can be placed sealingly against the base plate, the inlet openings in the housing jacket being provided radially outside the mouth of the sliding sleeve and that the sliding sleeve is actuated by a protruding from the barrel device is displaceable from above.
  • the tapering part of the housing shell can advantageously be designed as a flat truncated cone or as a spherical cap.
  • a particularly advantageous embodiment with regard to the operability of the sliding sleeve results from the fact that two push bars are attached to the sliding sleeve and are connected to the support tube, which is displaceable and sealed in a bearing star arranged above the pump protector on the one hand and in a plain bearing above the outlet on the other guided and is connected at its end projecting beyond the slide bearing to a handle which extends through an opening in the housing jacket and that the opening in the housing jacket is designed as a slot which runs obliquely to the longitudinal axis of the pump and is arranged above the slide bearing. Because of this configuration, only the additional push pieces are required to move the sliding sleeve, because the support tube also serves as a transmission element for the sliding movement initiated by the handle.
  • the slot in which the handle is guided runs at a flat angle to the horizontal, so that when the handle moves within the slot, which preferably extends over approximately 120 ° of the housing shell, a rotational movement and, due to the slot inclination, a Vertical movement of the support tube is generated, which transmits this lifting and lowering movement via the sliding webs on the sliding sleeve.
  • the slot inclination is selected in connection with the slot length so that there is a displacement of the sliding sleeve of about 6 mm.
  • the sliding webs are arranged radially through the clearances in the bearing star through this to the pump axis and fastened at their ends facing away from the sliding sleeve with a hub which can be pushed onto the supporting tube and which in turn is releasably attached to the supporting tube, for example by means of retaining rings . Due to this radial arrangement, the sliding webs take on a compensating effect on the liquid set in circular motion by the rotor, in addition to the bearing star, so that a largely calm axial flow of the liquid within the annular channel is achieved.
  • the free spaces in the bearing star are so large that they allow the movement of the push bars generated by the handle around the rotor axis.
  • the slide bearing is advantageously held by a partition that closes off the annular channel.
  • the lower part of the housing shell, which serves to receive the sliding sleeve is designed as a removable cap, this not only enables easy assembly of the pump, but also this cap, which serves as a pump foot and which particularly bumps when Inserting and stopping the pump is exposed in this way can be formed as a particularly stable component with a larger wall thickness than the rest of the housing shell.
  • This design which is reinforced in relation to the housing jacket, provides the prerequisite for an advantageous embodiment, which consists in the fact that the seal for sealing the sliding sleeve with respect to the housing jacket is inserted in the inner wall of the cap.
  • the sliding sleeve can be made thin-walled since it does not have to take up a seal which can be used in the wall of the cap, which is anyway thicker for protection purposes.
  • a seal is preferably arranged on the base plate, with which the sliding sleeve interacts in its closed position.
  • the seal avoids this additional processing effort and, due to its flexibility, also enables a secure seal if small solid particles happen to be deposited between the sliding sleeve and the base plate.
  • the seal is designed as a disk with a central slot, through which a web fastened on the base plate passes through in the installed state, twisting of the seal or displacement thereof due to the rotational movement of the sliding sleeve is thereby avoided.
  • the sealing between the housing jacket and the sliding sleeve takes place. If one provides for the sealing of the sliding sleeve relative to the housing jacket near the outlet, it is expedient if the sliding sleeve replaces the housing jacket below the sealing area towards the inlet openings, because otherwise the case would occur that the housing jacket and the sliding sleeve would overlap would extend a large length range of the pump together, which would lead to an unnecessary accumulation of material.
  • the housing shell and the sliding sleeve would extend parallel to one another over a large part of the length of the pump without this having any advantageous effects. Rather, the parallel arrangement of the housing shell and an unnecessary increase in weight occurs in the sliding sleeve. For this reason, the sliding sleeve can replace the housing jacket below the sealing area.
  • Fig. 1 shows a barrel pump with a tubular pump body 1 and a drive motor 2 designed as an electric motor, the connecting line is designated by 3. 4 with the outlet of the pump is referred to, for example, a hose with a nozzle can be connected.
  • the pump is intended for conveying liquid out of barrels, the tubular pump body 1 having an outer diameter which allows the pump to be inserted into the bung holes which are usually provided.
  • All of the lower pump sections shown in FIGS. 2 to 8 have a tubular housing jacket 5 and a support tube 6 for a rotor shaft 7, an annular channel 8 remaining in the housing jacket 5 and support tube 6, in which liquid is conveyed to the outlet 4 by means of a pump protector 9 can.
  • the pump rotor 9 is connected to the rotor shaft 7. With 10 a bearing for the rotor shaft 7 is designated.
  • a base plate 12 is provided at the lower end of the housing shell 5, which base plate is firmly connected to the housing shell 5.
  • a sliding sleeve 13 is provided on the outer periphery of the housing shell at its lower end, which is sealed off from the housing shell 5 by means of a seal 14.
  • the sliding sleeve 13 is loaded by a spring 15, which is supported on the one hand on a flange 16 fastened to the housing jacket 5 and on the other hand on the upper end face 17 of the sliding sleeve 13.
  • the spring 15 presses the sliding sleeve 13 into its closed position, which is shown in Fig. 2 in the left half.
  • the sliding sleeve 13 is pressed against a seal 18 in the base plate 12.
  • the inlet openings 11 are thus closed, as a result of which no liquid can leak out of the pump, since the pump inlet, namely the inlet openings 11 and the end of the housing shell 5 which is open in known pumps, are closed by the sliding sleeve 13 and the base plate 12.
  • a plurality of pressure pieces 19 are attached which, when the pump is placed on the drum base, allow the pump to be moved downward counter to the action of the spring 15 until the base plate 12 also stands on the drum base. In this position, the lower end of a pressure piece 19 closes with the underside of the base plate 12, as shown in the right half in FIG. 2.
  • This embodiment enables a barrel change even with the pump motor running, since the pump inlet is closed by the sliding sleeve 13 when the pump is raised. As soon as the pump sits on the drum bottom, the inlet openings are opened again. Since the inlet openings 11 are at the lower end of the housing shell 5 directly above the base plate 12, the barrel can be emptied to an extremely small amount.
  • the pressure pieces 19 are in the closed position of the sliding sleeve 13 so far beyond the base plate that when the pump is placed on a barrel base, the sliding sleeve is moved according to the height of the inlet openings. With low inlet openings and a thin base plate 12, the remaining liquid height is only a few millimeters.
  • the sliding sleeve 13a comprises an upper closed and a lower part provided with inlet openings 20, between which an inner shoulder 21 is formed, which in the closed position against the seal 18 presses.
  • This is shown in Fig. 3 in the left half, while the right half shows the open position.
  • This embodiment is due to the lower closed ring 22 of the sliding sleeve 13 less sensitive to hard belching on the barrel bottom, but leaves a larger amount because of the height of the ring 22.
  • a groove 23 is provided on the inside of the sliding sleeve 13a, into which a guide pin 24 arranged on the base plate engages.
  • the sliding sleeve 13b is provided with a closed base 25 against which a spring 15 ′ is supported, which rests with its other end on the underside of the base plate 12.
  • the closed position of the sliding sleeve 13b is shown, which is pushed downwards by the spring 15 'to such an extent that the inlet openings 20' lie below the upper edge of the base plate 12.
  • this is provided with a seal 26, so that liquid can no longer flow out of the annular space 8 of the pump.
  • the sliding sleeve 13b is displaced upward relative to the housing jacket 5 against the action of the spring 15 ', so that the inlet openings 20' of the sliding sleeve 13b are at least partially aligned with the inlet openings 11 of the housing jacket 5.
  • This embodiment is particularly insensitive to hard impacts due to the strong design of the bottom of the sliding sleeve.
  • the sliding sleeve 13c is essentially comparable to the sliding sleeve 13 according to FIG. 2, but does not have any pressure pieces protruding downwards, which are used in the embodiment according to FIG. 2 to move the sliding sleeve into its open position.
  • the sliding sleeve 13c is displaced by means of an actuating device 27, which is firmly connected to the sliding sleeve 13c and protrudes upward from the barrel.
  • This actuating device 27 can be a piece of pipe which undergoes a longitudinal displacement by means of steep threads during rotation.
  • a handwheel or a lever can be arranged at the upper end of this tubular piece of the actuating device.
  • the sliding sleeve 13c is provided on its lower end face with a seal 18 ', which rests on the base plate 12 in the lower position.
  • relatively low inlet openings 11 are provided, so that in connection with the thin base plate 12 there is a small residual amount in the barrel after the pumping process has ended.
  • the embodiment according to FIG. 6 shows a modification compared to that according to FIG. 5, which consists in that pressure pieces 19a are provided on the sliding sleeve 13c, which have the same function as the pressure pieces 19 in the embodiment according to FIG. 2.
  • the modification 5 also consists in the fact that the actuating device 27 is connected to a pressure ring 28 of the spring 15 and thus not the sliding sleeve 13c directly, but first the pressure ring 28 and via the spring 15, both with the pressure ring 28 and with the sliding sleeve 13c is connected, this can move.
  • the different sliding possibilities of the sliding sleeve according to FIG. 2 are combined with that of FIG. 5, i.e.
  • the sliding sleeve can be opened by placing it on the barrel bottom by means of the pressure pieces 19a against the action of the spring 15, or the sliding sleeve can be raised into the open position by means of the actuating device 27 and also moved back into the closed position. As long as the pressure ring 28 is held in the position shown in FIG. 6 by the actuating device 27, the pump inlet is closed due to the spring action of the spring 15.
  • radial wheels 29 are provided in the embodiments according to FIGS. 7 and 8. Accordingly, the inlet is designed differently, namely a wear ring 30 is assigned to the radial wheel 29, so that the liquid is sucked into the pump essentially in the region of the center of the pump protector.
  • a sliding sleeve 31 is firmly and tightly connected to a base plate 32 designed as a base and is moved into the open position shown in the right half of FIG. 7 or into the left half of FIG. 7 shown closed position shifted.
  • inlet openings 33 are provided, through which liquid can reach the central region of the pumping protector 29 when the sliding sleeve 31 is lowered.
  • the base plate 32 lies against a seal 37 inserted in the wear ring 30.
  • FIG. 8 makes use of the principle shown in FIGS. 2 and 6 with regard to the displacement of the sliding sleeve.
  • the base plate 32 is held by means of spacers 34 at a certain distance from the slide ring 30, so that an inlet gap 35 remains between the wear ring 30 and the base plate 32, through which liquid can reach the inlet opening of the wear ring if the sliding sleeve 31 'counter to the action of the spring 15 'is pushed up.
  • pressure pieces 36 corresponding to the pressure pieces 19 and 19 'in FIGS. 2 and 6 are attached to the underside of the sliding sleeve 31.
  • the feather 15 ' is supported against a pressure ring 28', which can be moved by means of an actuating device 27, as in the embodiment according to FIG. 6, so that in addition to the possibility of displacement due to the pump weight and the spring action, there is also an arbitrary possibility of displacement by the actuating device 27 .
  • FIG. 9 shows a particularly preferred embodiment.
  • a support tube 41 is provided for a rotor shaft 42, which at its lower end in a star bearing 43 and at its upper end in a slide bearing 44 is rotatably and rotatably held by seals 45 and is longitudinally displaceable.
  • annular channel 46 is formed, in which the liquid is conveyed by a pump rotor 47 to an outlet 48, which is located at the upper end of the housing shell 40. Above the outlet 48, a partition 49 is drawn in, which carries the slide bearing 44, so that the annular channel 46 is sealed at the top.
  • the bearing star 43 corresponds to the usual design of such bearing stars in barrel pumps and is used to support the support tube 41 and to support the rotor shaft 42 and to seal it by means of a mechanical seal 50.
  • the bearing star usually has three to four ribs 43a arranged in a star shape, between which there is space for the passage of the liquid conveyed by the pump rotor 47 remains.
  • the star-shaped ribs 43a serve not only to support the bearing body, but also to align the circulating flow in the axial direction.
  • the lower part of the housing shell is designed as a cap 51, which is screwed onto the tubular part 40.
  • the cap 51 serves as a pump foot and has a greater wall thickness than the remaining housing jacket 40.
  • the cap 51 essentially receives the rotor 47.
  • the cylindrical part of the cap 51 merges into a tapering part 52 which is designed as a spherical cap.
  • the base of the cap forms a base plate 53 which adjoins the tapering part 52.
  • inlet openings 54 are provided in the tapered part 52 of the cap 51, through which the rotor 47 sucks in the liquid to be conveyed.
  • a sliding sleeve 55 is provided, which comprises a cylindrical part 57, which is sealed off from the housing jacket by a seal 56, and a nozzle-like tapering part 58 which adjoins it at the bottom, this tapering part 58 adapting to the shape of the rotor 47 is and serves as a wear ring for the radial rotor 47.
  • the sliding sleeve 55 With the mouth 59 of the nozzle-like taper 58, the sliding sleeve 55 can be placed sealingly against the base plate 53 in its lower closed position.
  • a sealing disk 60 is provided on the base plate, which can be plugged with a central slot 61 onto a web 62 fastened on the base plate 53, so that it is secured against rotation.
  • the base plate 53 is only slightly larger than the diameter of the mouth 59 and thus much smaller in diameter than the housing jacket.
  • the inlet openings 54 are closed since they are provided outside the mouth 59 sealingly against the sealing disk 60, thereby preventing liquid from escaping from the pump. Since the tapered region 52 of the cap 51 extends at an overall opening angle of less than 180 ° and the openings 54 directly adjoin the base plate 53, the radially inner regions of the inlet openings 54 lie directly above the barrel base, so that in the position shown in FIG 9 shown position of the sliding sleeve 55, the liquid can be completely pumped out of a barrel.
  • the base plate 53, the tapered part 52 and the cylindrical part of the cap 51 are made in one piece.
  • the sliding sleeve 55 To move the sliding sleeve 55, it is connected at its upper edge to two thrust bars 63, which run in the radial direction with respect to the rotor axis near the inner wall of the housing shell 40 and reach through the free spaces in the bearing star 43.
  • the upper ends of the sliding webs 63 are connected to a hub 64 which can be pushed onto the support tube 41 and which can be fixed on the support tube 41 by means of retaining rings 65.
  • the support tube 41 protrudes upward beyond the slide bearing 44 and is connected at its upper end to a handle 66, which is designed as a bolt, which is guided through a slot 67 in the housing jacket 40.
  • the slot 67 extends at an angle to the longitudinal axis of the pump and is inclined at an acute angle to the horizontal in the vertical position of the pump. This slot extends approximately over 120 ° of the housing shell and forms a guide for the handle 66, which is raised or lowered during its movement in this slot 67 due to the inclination relative to the longitudinal axis.
  • This movement is transmitted to the support tube 41, which transmits this movement to the sliding sleeve 55 via the pushrods 63.
  • 9 is the Sliding sleeve shown in its fully open position and surrounds the pump rotor 47 with a narrow gap.
  • the handle 66 To pump out liquid from a barrel, the handle 66 is rotated so that it is located at the end of the higher part of the slot 47, whereby the sliding sleeve comes into the fully open position.
  • the handle 66 When the barrel is pumped empty, the handle 66 is moved into the other end position of the slot 47, whereby the support tube 41 is displaced downward, so that the sliding sleeve 55 is moved downward over the sliding webs 63 until its mouth 59 seals onto the Sealing washer 60.
  • the pump can be removed from the barrel without the liquid contained in the annular space 46 being able to run out of the pump again. The pump can then be transferred to a small vessel to allow this remaining amount in the ring channel to flow out. This enables the barrel to be completely emptied and the pump to be disposed of.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Description

Faß pumpeBarrel pump

Die Erfindung bezieht sich auf eine Faßpumpe mit einem über eine Rotorwelle durch einen Motor angetriebenen Pumprotor, mit dem die Flüssigkeit in einem zwischen einem Stützrohr für die Rotorwelle und einem rohrförmigen Gehäusemantel liegenden Ringkanal zu einem mit diesen verbundenen Auslauf hochgepumpt wird, wobei die Flüssigkeit durch Einlaßöffnungen am unteren Ende des Gehäusemantels ansaugbar ist.The invention relates to a barrel pump with a pump rotor driven by a motor via a rotor shaft, with which the liquid is pumped up in an annular channel lying between a support tube for the rotor shaft and a tubular housing jacket to an outlet connected to the latter, the liquid being drawn through inlet openings is suckable at the lower end of the housing shell.

Bei Faßpumpen dieser Art (DE-A 34 12 873) treten, insbesondere wenn es sich um umweltschädigende Flüssigkeiten handelt, zwei Probleme auf. Das eine Problem besteht darin, daß ein Umsetzen der Pumpe von einem Faß in ein anderes bei laufendem Motor nicht möglich ist, weil die Flüssigkeit aus der unten offenen Pumpe ausläuft. Ein solches Umsetzen ist dann notwendig, wenn eine sehr schnelle Entleerung mehrerer Fässer gefordert wird. Das zweite Problem besteht darin, daß die Fässer nicht restlos entleert werden können und wegen der am Umfang des Gehäusemantels mit Abstand von dessen unteren Ende angeordneten Einlaßöffnungen eine dem Abstand der Öffnungen bis zum Ende des Gehäusemantels entsprechende Restflüssigkeitsmenge im Faß verbleibt. Zu dieser Restmenge kommt noch die in der Pumpe vorhandene Flüssigkeitsmenge, die beim Abschalten des Motors in das Faß zurückläuft. Die so verbleibende Restmenge beeinträchtigt das Recycling der Fässer.In drum pumps of this type (DE-A 34 12 873), especially when it comes to environmentally harmful liquids, there are two problems. One problem is that moving the pump from one barrel to another with the engine running is not possible because the liquid leaks from the open pump. Such a transfer is necessary if a very quick emptying of several drums is required. The second problem is that the barrels cannot be completely emptied and, because of the inlet openings arranged on the circumference of the housing shell at a distance from its lower end, a residual amount of liquid corresponding to the distance of the openings to the end of the housing shell remains in the barrel. In addition to this remaining amount, there is the amount of liquid in the pump that runs back into the barrel when the engine is switched off. The remaining amount in this way affects the recycling of the barrels.

Aufgabe der Erfindung ist es, die im Faß verbleibende Restmenge auf einen Minimalwert zu verringern.The object of the invention is to reduce the residual amount remaining in the barrel to a minimum value.

Diese Aufgabe wird durch die im Anspruch 1 angegebenen Mittel gelöst.This object is achieved by the means specified in claim 1.

Durch diese Ausgestaltung wird das weiter oben angegebene Problem gelöst, denn durch die vollständige Verschließbarkeit des unteren Pumpenendes mittels der Grundplatte und der Schiebehülse wird ein Auslaufen der Flüssigkeit aus der Pumpe vermieden, wodurch einerseits ein Umsetzen der Pumpe auch bei laufendem Motor möglich ist und andererseits wird durch das Fehlen der zurücklaufenden Menge die Restmenge im Faß gegenüber bisher bekannten Pumpen verringert, bzw. durch eine weiter unten noch zu beschreibende besonders bevorzugte Ausgestaltung vollständig zu vermeiden.This configuration solves the problem specified above, because the complete sealability of the lower pump end by means of the base plate and the sliding sleeve prevents the liquid from escaping from the pump, which means that the pump can also be moved while the motor is running and is also possible due to the lack of the returning amount, the residual amount in the barrel is reduced compared to previously known pumps, or to be completely avoided by a particularly preferred embodiment to be described below.

Eine weitere vorteilhafte Ausgestaltung der Erfindung besteht darin, daß die Einlaßöffnungen unmittelbar über der Grundplatte vorgesehen sind. Hierdurch kann auch der allerletzte Rest an Flüssigkeit aus dem Faß entzogen werden, da die Grundplatte verhältnismäßig dünn oder zumindest an ihrem Außenrand angeschrägt und damit sehr dünn ausgeführt sein kann.Another advantageous embodiment of the invention is that the inlet openings are provided directly above the base plate. As a result, the very last remaining liquid can be removed from the barrel, since the base plate is relatively thin or at least bevelled on its outer edge and can therefore be made very thin.

Wenn in weiterer Ausgestaltung der Erfindung die Schiebehülse durch eine an einem pumpenfesten Teil abgestützte Feder in die Schließstellung und durch das Pumpengewicht beim Aufsetzen auf den Faßboden in die Offenstellung schiebbar ist, so wird hierdurch ohne zusätzliche manuelle Betätigung das Öffnen und Schließen des Pumpeneinlasses herbeigeführt, und zwar erfolgt das Öffnen durch das Pumpengewicht entgegen der Wirkung der Feder, während die Feder beim Anheben der Pumpe die Schiebehülse verschiebt und damit die Pumpe verschließt. Die in der Pumpe enthaltene Flüssigkeitsmenge kann somit weder in das Faß zurücklaufen noch beim Umsetzen der Pumpe in ein anderes Faß die Umgebung des Fasses belasten.If, in a further embodiment of the invention, the sliding sleeve can be pushed into the closed position by a spring supported on a pump-fixed part and by the pump weight when it is placed on the drum base in the open position, the opening and closing of the pump inlet is brought about without additional manual actuation, and it is opened by the weight of the pump against the action of the spring, while the spring moves the sliding sleeve when the pump is lifted and thus closes the pump. The amount of liquid contained in the pump can therefore neither run back into the barrel nor pollute the surroundings of the barrel when the pump is moved to another barrel.

Eine besonders vorteilhafte Ausgestaltung ergibt sich nach der Erfindung dadurch, daß die Grundplatte am Gehäusemantel befestigt ist und die Grundplatte über den Gehäusemantel in radialer Richtung hervorsteht, daß die Einlaßöffnungen im Gehäusemantel unmittelbar am unteren Ende desselben direkt über der Grundplatte vorgesehen sind, daß die Schiebehülse mit ihrem unteren Rand dichtend gegen die Grundplatte drückbar ist und daß an der Schiebehülse nach unten in der Schließstellung über die Grundplatte vorstehende Druckstücke vorgesehen sind, die in der vollständig geöffneten Stellung der Schiebehülse mit der Unterseite der Grundplatte fluchten und deren in der Schließstellung über die Grundplatte überstehende Länge im wesentlichen der Höhe der Einlaßöffnungen entspricht. Diese Ausgestaltung bietet nicht nur den Vorteil, daß die in der Pumpe enthaltene Flüssigkeit in dieser verbleibt, sondern der zusätzliche herausragende Vorteil besteht darin, daß die Ansaugöffnung sich unmittelbar in Bodennähe befindet, und zwar unmittelbar über der Grundplatte, die verhältnismäßig dünn ausgeführt werden kann, so daß nur eine wenige Millimeter hohe Flüssigkeitsschicht im Faß zurückbleibt.A particularly advantageous embodiment results according to the invention in that the base plate is attached to the housing shell and the base plate protrudes beyond the housing shell in the radial direction, that the inlet openings in the housing shell are provided directly at the lower end of the same directly above the base plate that the sliding sleeve with its lower edge can be pressed sealingly against the base plate and that protruding pressure pieces are provided on the sliding sleeve downward in the closed position above the base plate, which are in alignment with the underside of the base plate in the fully open position of the sliding sleeve and which project beyond the base plate in the closed position Length corresponds essentially to the height of the inlet openings. This configuration not only offers the advantage that the liquid contained in the pump remains in it, but the additional outstanding advantage is that the suction opening is located directly near the floor, specifically above the base plate, which can be made relatively thin, so that only a few millimeters high layer of liquid remains in the barrel.

Eine konstruktiv einfache Lösung ergibt sich nach der Erfindung dadurch, daß die Feder den Gehäusemantel umgebend einerseits an einem am Gehäusemantel angeordneten Flansch und andererseits am oberen Rand der Schiebehülse abgestützt ist.A structurally simple solution results according to the invention in that the spring surrounding the housing shell is supported on the one hand on a flange arranged on the housing shell and on the other hand on the upper edge of the sliding sleeve.

Nach einer anderen Ausgestaltung der Erfindung kann die Schiebehülse durch eine aus dem Faß herausragende Betätigungseinrichtung von oben her verschiebbar sein, wobei diese Betätigungseinrichtung alleine oder in Verbindung mit der weiter oben erläuterten Feder zur Anwendung kommen kann, so daß die automatische, durch die Feder bewirkte Betätigung zusätzlich durch die Handbetätigung beeinflußt werden kann.According to another embodiment of the invention, the sliding sleeve can be displaced from above by an actuating device protruding from the barrel, which actuating device can be used alone or in conjunction with the spring explained above, so that the automatic actuation effected by the spring can also be influenced by manual operation.

Sofern es in erster Linie auf eine besonders robuste Ausführungsform ankommt, bei der ein Umsetzen der Pumpe bei laufendem Motor möglich ist und die Restmenge nur von untergeordneter Bedeutung ist, so kann die Schiebehülse mit Abstand von ihrem unteren Rand am Umfang verteilte Einlaßöffnungen aufweisen und oberhalb der Einlaßöffnungen kann eine Innenschulter vorgesehen sein, die sich in der Schließstellung abdichtend gegen die Grundplatte legt, welche über den Gehäusemantel hervorsteht. Hierdurch verbleibt ein geschlossener Ringmantel am unteren Ende der Schiebehülse, bei dem auch bei sehr hartem Aufsetzen der Schiebehülse auf den Faßboden eine Beschädigung praktisch ausgeschlossen ist. Diese Pumpe eignet sich deshalb für solche Anwendungsfälle, bei denen es in allererster Linie auf ein sehr rasches Entleeren mehrerer Fässer bei laufendem Pumpenmotor und nicht so sehr auf die verbleibende Restmenge ankommt, die aufgrund des Ringes der Schiebehülse unterhalb der Einlaßöffnungen größer als bei der weiter oben erläuterten Ausführungsmöglichkeit ist.If it is primarily a particularly robust embodiment that is important, in which it is possible to move the pump while the engine is running and the remaining amount is only of minor importance, the sliding sleeve can have inlet openings distributed around the circumference at a distance from its lower edge and above that Inlet openings can be provided with an inner shoulder which, in the closed position, lies sealingly against the base plate, which protrudes beyond the housing jacket. This leaves a closed ring jacket at the lower end of the sliding sleeve, in which damage is practically impossible even when the sliding sleeve is placed very hard on the barrel bottom. This pump is therefore suitable for those applications in which first and foremost it is a matter of very quick emptying of several drums with the pump motor running and not so much of the remaining amount, which is larger due to the ring of the sliding sleeve below the inlet openings than in the case above explained execution possibility is.

Eine abgeänderte Ausgestaltung, die noch eine größere Robustheit aufweist, ergibt sich dadurch, daß die Schiebehülse an ihrem unteren Ende einen Innenflansch oder Boden zur Abstützung der Feder aufweist, die mit ihrem anderen Ende an der Unterseite der Grundplatte abgestützt ist und daß am Umfang der Schiebehülse in deren unteren Teil Einlaßöffnungen vorgesehen sind. Der Boden dieser Schiebehülse kann besonders stabil ausgeführt sein und außerdem ist die Feder geschützt angeordnet, so daß auch hier Beschädigungen nicht eintreten können.A modified design, which is even more robust, results from the fact that the sliding sleeve has at its lower end an inner flange or base for supporting the spring, which is supported with its other end on the underside of the base plate and that on the circumference of the sliding sleeve inlet openings are provided in the lower part thereof. The bottom of this sliding sleeve can be designed to be particularly stable and, in addition, the spring is arranged in a protected manner, so that damage cannot occur here either.

Damit die Einlaßöffnungen in der Schiebehülse und die jenigen im Gehäusemantel stets fluchten, ist es vorteilhaft, die Schiebehülse gegenüber dem Gehäusemantel, beispielsweise durch einen in eine Nut eingreifenden Stift, verdrehsicher zu führen.So that the inlet openings in the sliding sleeve and those in the housing jacket are always aligned, it is advantageous to guide the sliding sleeve relative to the housing jacket, for example by means of a pin engaging in a groove.

In Anspruch 10 ist eine Ausgestaltung erläutert, die sich speziell auf Faßpumpen mit Radialrotor bezieht, nachdem die vorhergehenden Ausgestaltungen sowohl bei Pumpen mit Axialrotor als auch mit Radialrotor anwendbar sind.In claim 10, an embodiment is explained which relates specifically to drum pumps with a radial rotor, after the previous embodiments can be used both with pumps with an axial rotor and with a radial rotor.

Eine besonders bevorzugte Ausgestaltung der Faßpumpe, die ein praktisch vollständiges Entleeren eines Fasses ermöglicht, ist dadurch gekennzeichnet, daß das untere, die Einlaßöffnungen aufweisende Ende des Gehäusemantels unterhalb des Pumprotors mit Abstand zu diesem unter einem Gesamtöffnungswinkel von weniger als 180° düsenartig verjüngt und mit der Grundplatte, die einen kleineren Durchmesser als der Gehäusemantel aufweist, bis auf die Einlaßöffnungen abgedichtet verbunden ist, daß die Einlaßöffnungen in dem sich verjüngenden Teil vorgesehen sind, daß die Schiebehülse im Inneren des Gehäusemantels gegenüber diesem abgedichtet geführt ist und in ihrem unteren Bereich düsenartig verjüngt ist, daß die Mündung der Schiebehülse abdichtend gegen die Grundplatte anlegbar ist, wobei die Einlaßöffnungen im Gehäusemantel radial außerhalb der Mündung der Schiebehülse vorgesehen sind und daß die Schiebehülse durch eine aus dem Faß herausragende Betätigungsvorrichtung von oben her verschiebbar ist.A particularly preferred embodiment of the barrel pump, which enables a barrel to be emptied practically completely, is characterized in that the lower end of the housing shell, which has the inlet openings, tapers below the pump protector at a distance from it at a total opening angle of less than 180 ° and with the Base plate, which has a smaller diameter than the housing shell, is connected in a sealed manner except for the inlet openings, that the inlet openings are provided in the tapering part, that the sliding sleeve is guided in a sealed manner in the interior of the housing shell and is tapered like a nozzle in its lower region that the mouth of the sliding sleeve can be placed sealingly against the base plate, the inlet openings in the housing jacket being provided radially outside the mouth of the sliding sleeve and that the sliding sleeve is actuated by a protruding from the barrel device is displaceable from above.

Durch diese Ausgestaltung werden mehrere Vorteile gegenüber den bisher beschriebenen Ausführungsformen erzielt. Durch die Anordnung der Schiebehülse innerhalb des Gehäusemantels ist eine Durchmesservergrößerung vermieden, so daß die Pumpe auch bei engen Entnahmeöffnungen, wie die bisher bekannten Faßpumpen einführbar ist. Außerdem liegen sämtliche zum Verschluß des Pumpeneinlasses dienenden Teile innerhalb des sie schützenden Gehäusemantels. Beschädigungen durch eine rauhe Behandlung der Pumpe sind deshalb an der Schiebehülse, der Abdichtung derselben und der für sie vorgesehenen Bedienungsteile ausgeschlossen. Der wichtigste Vorteil besteht aber darin, daß die Einlaßöffnungen in dem sich verjüngenden Teil und damit bei in ein Faß eingesetzter Pumpe in unmittelbarer Bodennähe des Fasses liegen, so daß das Faß praktisch vollständig entleert werden kann.This configuration achieves several advantages over the previously described embodiments. Due to the arrangement of the sliding sleeve within the housing shell, an increase in diameter is avoided, so that the pump can be inserted even with narrow removal openings, such as the previously known drum pumps. In addition, all parts used to close the pump inlet lie within the protective casing. Damage caused by rough handling of the pump is therefore excluded on the sliding sleeve, the sealing of the same and the operating parts provided for it. The most important advantage, however, is that the inlet openings are located in the tapered part and thus when the pump is inserted into a barrel in the immediate vicinity of the bottom of the barrel, so that the barrel can be practically completely emptied.

Der sich verjüngende Teil des Gehäusemantels kann in vorteilhafter Weise als flacher Kegelstumpf oder als Kugelkalotte ausgebildet sein.The tapering part of the housing shell can advantageously be designed as a flat truncated cone or as a spherical cap.

Bei Verwendung eines Radialrotors ergibt sich in Verbindung mit der sich verjüngenden Ausgestaltung der Schiebehülse ein besonderer Vorteil, der darin besteht, daß der untere verjüngte Teil der Schiebehülse nach Art eines Schleißringes der Form des Radialrotors angepaßt ist, so daß sich besonders günstige Einlaufbedingungen für den Rotor ergeben, da die Mündung der Schiebehülse in der Nähe der Einlaßöffnungen und mit geringem Abstand zur Grundplatte liegt, so daß sich eine besonders starke Saugwirkung auf die in die Einlaßöffnungen eindringende Flüssigkeit ergibt. Durch die Verschiebbarkeit der Schiebehülse kann diese, wenn nur noch geringe Restmengen im Faß vorhanden sind, bis nahe der Grundplatte verschoben werden, so daß sich ein nur geringer Spalt zwischen der Schiebehülse und der Grundplatte ergibt, der zu einer besonders starken Saugwirkung auf die Restmenge führt.When using a radial rotor, there is a particular advantage in connection with the tapering design of the sliding sleeve, which consists in the fact that the lower tapered part of the sliding sleeve is adapted to the shape of the radial rotor in the manner of a wear ring, so that particularly favorable inlet conditions for the rotor result because the mouth of the sliding sleeve is close to the inlet openings and at a short distance from the base plate, so that there is a particularly strong suction effect on the liquid penetrating into the inlet openings. Due to the displaceability of the sliding sleeve, this can be moved to near the base plate, if only small residual amounts are left in the barrel, so that there is only a small gap between the sliding sleeve and the base plate, which leads to a particularly strong suction effect on the remaining amount .

Eine besonders vorteilhafte Ausgestaltung hinsichtlich der Bedienbarkeit der Schiebehülse ergibt sich dadurch, daß an der Schiebehülse zwei Schubstege befestigt sind, die mit dem Stützrohr in Verbindung stehen, welches einerseits in einem oberhalb des Pumprotors angeordneten Lagerstern und andererseits in einem Gleitlager oberhalb des Auslaufes verschiebbar und abgedichtet geführt und an ihrem über das Gleitlager herausragenden Ende mit einer durch eine Öffnung im Gehäusemantel hindurchgreifende Handhabe verbunden ist und daß die Öffnung im Gehäusemantel als ein schräg zur Pumpenlängsachse verlaufender Schlitz ausgebildet und oberhalb des Gleitlagers angeordnet ist. Aufgrund dieser Ausgestaltung sind zur Verschiebung der Schiebehülse nur die zusätzlichen Schubstege erforderlich, weil das Stützrohr gleichzeitig auch als Übertragungsorgan der durch die Handhabe eingeleiteten Verschiebebewegung dient. Bei senkrecht stehender Pumpe verläuft der Schlitz, in welchem die Handhabe geführt ist, unter einem flachen Winkel zur Horizontalen, wodurch bei einer Bewegung der Handhabe innerhalb des Schlitzes, der sich vorzugsweise etwa über 120° des Gehäusemantels erstreckt, eine Drehbewegung und aufgrund der Schlitzneigung eine Höhenbewegung des Stützrohres erzeugt wird, die diese Hebe- und Senkbewegung über die Schubstege auf die Schiebehülse überträgt. Bei einem bevorzugten Ausführungsbeispiel ist die Schlitzneigung in Verbindung mit der Schlitzlänge so gewählt, daß sich ein Verschiebeweg der Schiebehülse von etwa 6 mm ergibt. Hierdurch kann besonders feinfühlig der Abstand der Mündung der Schiebehülse zur Grundplatte und damit der Einlaßquerschnitt zum Rotor variiert werden.A particularly advantageous embodiment with regard to the operability of the sliding sleeve results from the fact that two push bars are attached to the sliding sleeve and are connected to the support tube, which is displaceable and sealed in a bearing star arranged above the pump protector on the one hand and in a plain bearing above the outlet on the other guided and is connected at its end projecting beyond the slide bearing to a handle which extends through an opening in the housing jacket and that the opening in the housing jacket is designed as a slot which runs obliquely to the longitudinal axis of the pump and is arranged above the slide bearing. Because of this configuration, only the additional push pieces are required to move the sliding sleeve, because the support tube also serves as a transmission element for the sliding movement initiated by the handle. When the pump is in a vertical position, the slot in which the handle is guided runs at a flat angle to the horizontal, so that when the handle moves within the slot, which preferably extends over approximately 120 ° of the housing shell, a rotational movement and, due to the slot inclination, a Vertical movement of the support tube is generated, which transmits this lifting and lowering movement via the sliding webs on the sliding sleeve. In a preferred embodiment, the slot inclination is selected in connection with the slot length so that there is a displacement of the sliding sleeve of about 6 mm. As a result, the distance between the mouth of the sliding sleeve and the base plate and thus the inlet cross section to the rotor can be varied particularly sensitively.

In vorteilhafter weiterer Ausgestaltung der Erfindung sind die Schiebestege durch die Freiräume im Lagerstern durch diesen durchfassend radial zur Pumpenachse angeordnet und an ihren der Schiebehülse abgewandten Enden mit einer auf das Stützrohr aufschiebbaren Nabe befestigt, die ihrerseits an dem Stützrohr, beispielsweise durch Sicherungsringe, lösbar befestigt ist. Die Schiebestege übernehmen aufgrund dieser radialen Anordnung zusätzlich zu dem Lagerstern eine Ausgleichswirkung auf die durch den Rotor in kreisende Bewegung versetzte Flüssigkeit, so daß eine weitgehend beruhigte Axialströmung der Flüssigkeit innerhalb des Ringkanales erzielt wird. Die Freiräume im Lagerstern sind dabei so groß ausgebildet, daß sie die durch die Handhabe erzeugte Bewegung der Schubstege um die Rotorachse zulassen. Durch die Verwendung einer auf das Stützrohr aufschiebbaren beispielsweise durch Sicherungsringe lösbar befestigte Nabe ist nicht nur eine einfache Montage und Demontage, sondern gegebenenfalls auch eine einfache Nachrüstung bestehender Pumpen ermöglicht.In an advantageous further embodiment of the invention, the sliding webs are arranged radially through the clearances in the bearing star through this to the pump axis and fastened at their ends facing away from the sliding sleeve with a hub which can be pushed onto the supporting tube and which in turn is releasably attached to the supporting tube, for example by means of retaining rings . Due to this radial arrangement, the sliding webs take on a compensating effect on the liquid set in circular motion by the rotor, in addition to the bearing star, so that a largely calm axial flow of the liquid within the annular channel is achieved. The free spaces in the bearing star are so large that they allow the movement of the push bars generated by the handle around the rotor axis. By using a hub that can be slid onto the support tube, for example detachably fastened by retaining rings, not only simple assembly and disassembly is possible, but also simple retrofitting of existing pumps.

Um ein Hochsteigen der Flüssigkeit entlang des Stützrohres bis zur Lagerung der Rotorwelle trotz der Anordnung von Bedienungselementen für die Schiebehülse zu verhindern, ist in vorteilhafter Weise das Gleitlager durch eine den Ringkanal abschließende Trennwand gehalten.In order to prevent the liquid from rising up along the support tube until the rotor shaft is supported, despite the arrangement of operating elements for the sliding sleeve, the slide bearing is advantageously held by a partition that closes off the annular channel.

Wenn in weiterer Ausgestaltung der Erfindung der untere Teil des Gehäusemantels, der zur Aufnahme der Schiebehülse dient, als abnehmbare Kappe ausgebildet ist, so ist hierdurch nicht nur eine leichte Montage der Pumpe ermöglicht, sondern diese als Pumpenfuß dienende Kappe, die in besonderem Maße Stößen beim Einsetzen und Abstellen der Pumpe ausgesetzt ist, kann auf diese Weise als besonders stabiler Bauteil mit einer größeren Wandstärke als der übrige Gehäusemantel ausgebildet werden.If, in a further embodiment of the invention, the lower part of the housing shell, which serves to receive the sliding sleeve, is designed as a removable cap, this not only enables easy assembly of the pump, but also this cap, which serves as a pump foot and which particularly bumps when Inserting and stopping the pump is exposed in this way can be formed as a particularly stable component with a larger wall thickness than the rest of the housing shell.

Diese gegenüber dem Gehäusemantel verstärkte Ausführung bietet die Voraussetzung für eine vorteilhafte Ausgestaltung, die darin besteht, daß die Dichtung zur Abdichtung der Schiebehülse gegenüber dem Gehäusemantel in der Innenwand der Kappe eingesetzt ist. Hierdurch kann die Schiebehülse dünnwandig ausgeführt werden, da sie keine Dichtung aufzunehmen braucht, die in der zu Schutzzwecken ohnehin dickeren Wandung der Kappe eingesetzt werden kann.This design, which is reinforced in relation to the housing jacket, provides the prerequisite for an advantageous embodiment, which consists in the fact that the seal for sealing the sliding sleeve with respect to the housing jacket is inserted in the inner wall of the cap. As a result, the sliding sleeve can be made thin-walled since it does not have to take up a seal which can be used in the wall of the cap, which is anyway thicker for protection purposes.

Vorzugsweise ist auf der Grundplatte eine Dichtung angeordnet, mit der die Schiebehülse in ihrer Schließstellung zusammenwirkt. Selbstverständlich wäre es auch möglich, ohne Dichtung auszukommen, wenn die Grundplatte und die Schiebehülse exakt aufeinander eingeschliffen sind. Die Dichtung vermeidet jedoch diesen zusätzlichen Bearbeitungsaufwand und ermöglicht aufgrund ihrer Nachgiebigkeit auch dann eine sichere Abdichtung, wenn sich zufällig kleine Festkörperteilchen zwischen Schiebehülse und Grundplatte ablegen sollten.A seal is preferably arranged on the base plate, with which the sliding sleeve interacts in its closed position. Of course, it would also be possible to get by without a seal if the base plate and the sliding sleeve are ground exactly one on top of the other. However, the seal avoids this additional processing effort and, due to its flexibility, also enables a secure seal if small solid particles happen to be deposited between the sliding sleeve and the base plate.

Wenn gemäß einer weiteren vorteilhaften Ausgestaltung die Dichtung als Scheibe mit einem zentralen Schlitz ausgebildet ist, durch den im eingebauten Zustand ein auf der Grundplatte befestigter Steg hindurchfaßt, so wird hierdurch ein Verdrehen der Dichtung oder eine Verschiebung derselben aufgrund der Drehbewegung der Schiebehülse vermieden.If, according to a further advantageous embodiment, the seal is designed as a disk with a central slot, through which a web fastened on the base plate passes through in the installed state, twisting of the seal or displacement thereof due to the rotational movement of the sliding sleeve is thereby avoided.

Grundsätzlich ist es für die Erfindung unwesentlich, an welcher Stelle die Abdichtung zwischen Gehäusemantel und Schiebehülse erfolgt. Wenn man die Abdichtung der Schiebehülse gegenüber dem Gehäusemantel in der Nähe des Auslasses vorsieht, so ist es zweckmäßig, wenn die Schiebehülse den Gehäusemantel unterhalb des Abdichtungsbereiches zu den Einlaßöffnungen hin ersetzt, weil sonst der Fall eintreten würde, daß sich der Gehäusemantel und die Schiebehülse über einen großen Längenbereich der Pumpe gemeinsam erstrecken würde, was zu einer unnötigen Materialanhäufung führen würde. Der Gehäusemantel und die Schiebehülse würden sich über einen großen Teil der Länge der Pumpe parallel zueinander erstrekken, ohne daß dies irgendwelche vorteilhaften Auswirkungen zur Folge hätte. Vielmehr würde durch die parallele Anordnung des Gehäusemantels und der Schiebehülse eine unnötige Gewichtserhöhung eintreten. Aus diesem Grunde kann die Schiebehülse den Gehäusemantel unterhalb des Abdichtungsbereiches ersetzen.In principle, it is immaterial for the invention at which point the sealing between the housing jacket and the sliding sleeve takes place. If one provides for the sealing of the sliding sleeve relative to the housing jacket near the outlet, it is expedient if the sliding sleeve replaces the housing jacket below the sealing area towards the inlet openings, because otherwise the case would occur that the housing jacket and the sliding sleeve would overlap would extend a large length range of the pump together, which would lead to an unnecessary accumulation of material. The housing shell and the sliding sleeve would extend parallel to one another over a large part of the length of the pump without this having any advantageous effects. Rather, the parallel arrangement of the housing shell and an unnecessary increase in weight occurs in the sliding sleeve. For this reason, the sliding sleeve can replace the housing jacket below the sealing area.

Die Erfindung wird nachfolgend anhand mehrerer in der Zeichnung dargestellter Ausführungsbeispiele näher erläutert. In der Zeichnung zeigen:

  • Fig. 1 eine Gesamtansicht einer Faßpumpe;
  • Fig. 2 bis Fig. 8 Schnittdarstellungen des unteren Teils verschiedener Ausführungsformen von Faßpumpen;
  • Fig. 9 einen Längsschnitt durch eine Faßpumpe einer weiteren Ausführungsform, und
  • Fig. 10 eine Ansicht in Richtung des Pfeiles X in Fig. 9.
The invention is explained in more detail below with reference to several exemplary embodiments shown in the drawing. The drawing shows:
  • Fig. 1 is an overall view of a barrel pump;
  • 2 to 8 are sectional views of the lower part of various embodiments of barrel pumps;
  • 9 shows a longitudinal section through a barrel pump of a further embodiment, and
  • 10 is a view in the direction of arrow X in FIG .. 9

Fig. 1 zeigt eine Faßpumpe mit einem rohrförmigen Pumpenkörper 1 und einem als Elektromotor ausgebildeten Antriebsmotor 2, dessen Anschlußleitung mit 3 bezeichnet ist. Mit 4 ist der Auslauf der Pumpe bezeichnet, an dem beispielsweise ein Schlauch mit Zapfpistole anschließbar ist. Die Pumpe ist zum Herausfördern von Flüssigkeit aus Fässern bestimmt, wobei der rohrförmige Pumpenkörper 1 einen Außendurchmesser aufweist, der das Einführen der Pumpe in die üblicherweise vorgesehenen Spundlöcher gestattet.Fig. 1 shows a barrel pump with a tubular pump body 1 and a drive motor 2 designed as an electric motor, the connecting line is designated by 3. 4 with the outlet of the pump is referred to, for example, a hose with a nozzle can be connected. The pump is intended for conveying liquid out of barrels, the tubular pump body 1 having an outer diameter which allows the pump to be inserted into the bung holes which are usually provided.

Sämtliche in den Fig. 2 bis 8 gezeigten unteren Pumpenabschnitte weisen einen rohrförmigen Gehäusemantel 5 und ein Stützrohr 6 für eine Rotorwelle 7 auf, wobei zwischen Gehäusemantel 5 und Stützrohr 6 ein Ringkanal 8 verbleibt, in welchem Flüssigkeit mittels eines Pumprotors 9 zum Auslauf 4 gefördert werden kann. Der Pumprotor 9 ist mit der Rotorwelle 7 verbunden. Mit 10 ist ein Lager für die Rotorwelle 7 bezeichnet. Am unteren Ende des Gehäusemantels 5 befinden sich Einlaßöffnungen 11, durch die die Flüssigkeit zu dem Pumprotor 9 gelangt. Bei sämtlichen Ausführungsformen mit Ausnahme derjenigen nach Fig. 7 und 8 ist am unteren Ende des Gehäusemantels 5 eine Grundplatte 12 vorgesehen, die fest mit dem Gehäusemantel 5 verbunden ist.All of the lower pump sections shown in FIGS. 2 to 8 have a tubular housing jacket 5 and a support tube 6 for a rotor shaft 7, an annular channel 8 remaining in the housing jacket 5 and support tube 6, in which liquid is conveyed to the outlet 4 by means of a pump protector 9 can. The pump rotor 9 is connected to the rotor shaft 7. With 10 a bearing for the rotor shaft 7 is designated. At the lower end of the housing shell 5 there are inlet openings 11 through which the liquid reaches the pump rotor 9. In all of the embodiments, with the exception of those according to FIGS. 7 and 8, a base plate 12 is provided at the lower end of the housing shell 5, which base plate is firmly connected to the housing shell 5.

Bei der Ausführungsform nach Fig. 2 ist auf dem Außenumfang des Gehäusemantels an dessen unteren Ende eine Schiebehülse 13 vorgesehen, die gegenüber dem Gehäusemantel 5 mittels einer Dichtung 14 abgedichtet ist. Die Schiebehülse 13 ist durch eine Feder 15 belastet, die sich einerseits an einem am Gehäusemantel 5 befestigten Flansch 16 und andererseits an der oberen Stirnfläche 17 der Schiebehülse 13 abstützt. Die Feder 15 drückt die Schiebehülse 13 in ihre Schließlage, die in Fig. 2 in deren linken Hälfte dargestellt ist. Dabei wird die Schiebehülse 13 gegen eine Dichtung 18 in der Grundplatte 12 gedrückt.In the embodiment according to FIG. 2, a sliding sleeve 13 is provided on the outer periphery of the housing shell at its lower end, which is sealed off from the housing shell 5 by means of a seal 14. The sliding sleeve 13 is loaded by a spring 15, which is supported on the one hand on a flange 16 fastened to the housing jacket 5 and on the other hand on the upper end face 17 of the sliding sleeve 13. The spring 15 presses the sliding sleeve 13 into its closed position, which is shown in Fig. 2 in the left half. The sliding sleeve 13 is pressed against a seal 18 in the base plate 12.

Die Einlaßöffnungen 11 sind somit verschlossen, wodurch keine Flüssigkeit aus der Pumpe auslaufen kann, da der Pumpeneinlaß, nämlich die Einlaßöffnungen 11 und das bei bekannten Pumpen offene Ende des Gehäusemantels 5 durch die Schiebehülse 13 und die Grundplatte 12 verschlossen sind. An der unteren Stirnseite der Schiebehülse 13 sind mehrere Druckstücke 19 angebracht, die beim Aufsetzen der Pumpe auf den Faßboden ein Verschieben der Pumpe entgegen der Wirkung der Feder 15 nach unten zulassen, bis die Grundplatte 12 ebenfalls auf dem Faßboden aufsteht. In dieser Stellung schließt das untere Ende eines Druckstückes 19 mit der Unterseite der Grundplatte 12 ab, wie dies in Fig. 2 in deren rechten Hälfte dargestellt ist. Durch die nach oben geschobene Schiebehülse 13 kann die Flüssigkeit zwischen den einzelnen Druckstücken 19 zu den Einlaßöffnungen 11 gelangen, wodurch sie durch den Pumprotor 9 nach oben gepumpt werden kann. Beim Anheben der Pumpe wird aufgrund des fehlenden Pumpengewichtes die Schiebehülse 13 durch die Feder 15 in ihre Schließlage gebracht.The inlet openings 11 are thus closed, as a result of which no liquid can leak out of the pump, since the pump inlet, namely the inlet openings 11 and the end of the housing shell 5 which is open in known pumps, are closed by the sliding sleeve 13 and the base plate 12. On the lower end face of the sliding sleeve 13, a plurality of pressure pieces 19 are attached which, when the pump is placed on the drum base, allow the pump to be moved downward counter to the action of the spring 15 until the base plate 12 also stands on the drum base. In this position, the lower end of a pressure piece 19 closes with the underside of the base plate 12, as shown in the right half in FIG. 2. Due to the sliding sleeve 13 pushed upwards, the liquid between the individual pressure pieces 19 can reach the inlet openings 11, whereby it can be pumped upwards by the pump rotor 9. When the pump is lifted, the sliding sleeve 13 is brought into its closed position by the spring 15 due to the missing pump weight.

Diese Ausführungsform ermöglicht einen Faßwechsel auch bei laufendem Pumpmotor, da mit Anheben der Pumpe der Pumpeneinlaß durch die Schiebehülse 13 verschlossen wird. Sobald die Pumpe auf dem Faßboden aufsitzt, werden die Einlaßöffnungen wieder geöffnet. Da sich die Einlaßöffnungen 11 am unteren Ende des Gehäusemantels 5 also unmittelbar über der Grundplatte 12 befinden, kann das Faß bis auf eine äußerst geringe Restmenge entleert werden. Die Druckstücke 19 stehen in der Schließstellung der Schiebehülse 13 soweit über die Grundplatte nach unten hervor, daß bei einem Aufsetzen der Pumpe auf einem Faßboden die Schiebehülse entsprechend der Höhe der Einlaßöffnungen verschoben wird. Bei niedrigen Einlaßöffnungen und einer dünnen Grundplatte 12 ist die verbleibende Flüssigkeitshöhe nur wenige Millimeter groß.This embodiment enables a barrel change even with the pump motor running, since the pump inlet is closed by the sliding sleeve 13 when the pump is raised. As soon as the pump sits on the drum bottom, the inlet openings are opened again. Since the inlet openings 11 are at the lower end of the housing shell 5 directly above the base plate 12, the barrel can be emptied to an extremely small amount. The pressure pieces 19 are in the closed position of the sliding sleeve 13 so far beyond the base plate that when the pump is placed on a barrel base, the sliding sleeve is moved according to the height of the inlet openings. With low inlet openings and a thin base plate 12, the remaining liquid height is only a few millimeters.

Bei den nachfolgenden Ausführungsformen sind gleiche Teile mit gleichen Bezugszeichen und technisch entsprechende Teile mit den gleichen Bezugszeichen, jedoch mit einem zusätzlichen Strich oder Buchstaben bezeichnet.In the following embodiments, the same parts are denoted by the same reference numerals and technically corresponding parts by the same reference numerals, but with an additional line or letter.

Die Abänderung bei der Ausführungsform nach Fig. 3 gegenüber derjenigen nach Fig. 2 besteht darin, daß die Schiebehülse 13a einen oberen geschlossenen und einen unteren mit Einlaßöffnungen 20 versehenen Teil umfaßt, zwischen denen eine Innenschulter 21 gebildet ist, die in der Schließlage gegen die Dichtung 18 drückt. Diese ist in Fig. 3 in der linken Hälfte dargestellt, während die rechte Hälfte die Offenstellung zeigt. Diese Ausführungsform ist aufgrund des unteren geschlossenen Ringes 22 der Schiebehülse 13 unempfindlicher gegen hartes Aufstoßen auf dem Faßboden, beläßt jedoch eine größere Restmenge wegen der Höhe des Ringes 22.3 compared to that of FIG. 2 is that the sliding sleeve 13a comprises an upper closed and a lower part provided with inlet openings 20, between which an inner shoulder 21 is formed, which in the closed position against the seal 18 presses. This is shown in Fig. 3 in the left half, while the right half shows the open position. This embodiment is due to the lower closed ring 22 of the sliding sleeve 13 less sensitive to hard belching on the barrel bottom, but leaves a larger amount because of the height of the ring 22.

Damit die Einlaßöffnungen 11 des Gehäusemantels 5 und die Einlaßöffnungen 20 der Schiebehülse 13 in der Offenstellung miteinander fluchten, ist an der Innenseite der Schiebehülse 13a eine Nut 23 vorgesehen, in die ein an der Grundplatte angeordneter Führungsstift 24 eingreift.So that the inlet openings 11 of the housing shell 5 and the inlet openings 20 of the sliding sleeve 13 are aligned with one another in the open position, a groove 23 is provided on the inside of the sliding sleeve 13a, into which a guide pin 24 arranged on the base plate engages.

Bei der Ausführungsform nach Fig. 4 ist die Schiebehülse 13b mit einem geschlossene Boden 25 versehen, gegen den sich eine Feder 15' abstützt, welche mit ihrem anderen Ende an der Unterseite der Grundplatte 12 anlegt. In der linken Hälfte der Fig. 4 ist die Schließstellung der Schiebehülse 13b dargestellt, die durch die Feder 15' soweit nach unten geschoben wird, daß die Einlaßöffnungen 20' unterhalb der Oberkante der Grundplatte 12 liegen. Im oberen Bereich der Grundplatte ist diese mit einer Dichtung 26 versehen, so daß Flüssigkeit aus dem Ringraum 8 der Pumpe nicht mehr nach unten auslaufen kann. Durch Aufsetzen der Pumpe auf einem Faßboden wird die Schiebehülse 13b gegenüber dem Gehäusemantel 5 entgegen der Wirkung der Feder 15' nach oben verschoben, so daß die Einlaßöffnungen 20' der Schiebehülse 13b mit den Einlaßöffnungen 11 des Gehäusemantels 5 zumindest teilweise miteinander fluchten. Diese Ausführungsform ist aufgrund der kräftigen Ausbildung des Bodens der Schiebehülse besonders unempfindlich gegen harte Stöße.In the embodiment according to FIG. 4, the sliding sleeve 13b is provided with a closed base 25 against which a spring 15 ′ is supported, which rests with its other end on the underside of the base plate 12. In the left half of FIG. 4, the closed position of the sliding sleeve 13b is shown, which is pushed downwards by the spring 15 'to such an extent that the inlet openings 20' lie below the upper edge of the base plate 12. In the upper area of the base plate, this is provided with a seal 26, so that liquid can no longer flow out of the annular space 8 of the pump. By placing the pump on a barrel base, the sliding sleeve 13b is displaced upward relative to the housing jacket 5 against the action of the spring 15 ', so that the inlet openings 20' of the sliding sleeve 13b are at least partially aligned with the inlet openings 11 of the housing jacket 5. This embodiment is particularly insensitive to hard impacts due to the strong design of the bottom of the sliding sleeve.

Bei der Ausführungsform nach Fig. 5 ist die Schiebehülse 13c im wesentlichen vergleichbar mit der Schiebehülse 13 nach Fig. 2, weist jedoch keine nach unten herausragenden Druckstücke auf, die bei der Ausgestaltung nach Fig. 2 zum Verschieben der Schiebehülse in ihre Offenstellung dienen. In der in Fig. 5 dargestellten Ausführungsform erfolgt die Verschiebung der Schiebehülse 13c mittels einer Betätigungseinrichtung 27, die mit der Schiebehülse 13c fest verbunden ist und nach oben aus dem Faß herausragt. Diese Betätigungseinrichtung 27 kann ein Rohrstück sein, das mittels Steilgewinde bei einer Verdrehung eine Längsverschiebung erfährt. Am oberen Ende dieses rohrförmigen Stückes der Betätigungseinrichtung kann ein Handrad oder ein Hebel angeordnet sein. Die Schiebehülse 13c ist an ihrer unteren Stirnfläche mit einer Dichtung 18' versehen, die in der unteren Stellung auf der Grundplatte 12 aufruht. Bei dieser Ausführungsform sind verhältnismäßig niedrige Einlaßöffnungen 11 vorgesehen, so daß sich in Verbindung mit der dünnen Grundplatte 12 eine geringe Restmenge in dem Faß nach Beendigung des Pumpvorganges befindet.In the embodiment according to FIG. 5, the sliding sleeve 13c is essentially comparable to the sliding sleeve 13 according to FIG. 2, but does not have any pressure pieces protruding downwards, which are used in the embodiment according to FIG. 2 to move the sliding sleeve into its open position. In the embodiment shown in FIG. 5, the sliding sleeve 13c is displaced by means of an actuating device 27, which is firmly connected to the sliding sleeve 13c and protrudes upward from the barrel. This actuating device 27 can be a piece of pipe which undergoes a longitudinal displacement by means of steep threads during rotation. A handwheel or a lever can be arranged at the upper end of this tubular piece of the actuating device. The sliding sleeve 13c is provided on its lower end face with a seal 18 ', which rests on the base plate 12 in the lower position. In this embodiment, relatively low inlet openings 11 are provided, so that in connection with the thin base plate 12 there is a small residual amount in the barrel after the pumping process has ended.

Die Ausführungsform nach Fig. 6 zeigt eine Abänderung gegenüber derjenigen nach Fig. 5, die darin besteht, daß an der Schiebehülse 13c Druckstücke 19a vorgesehen sind, die die gleiche Funktion haben, wie die Druckstücke 19 bei der Ausführungsform nach Fig. 2. Die Abwandlung gegenüber Fig. 5 besteht außerdem noch darin, daß die Betätigungseinrichtung 27 mit einem Druckring 28 der Feder 15 verbunden ist und somit nicht die Schiebehülse 13c unmittelbar, sondern zunächst den Druckring 28 und über die Feder 15, die sowohl mit dem Druckring 28 als auch mit der Schiebehülse 13c verbunden ist, diese verschieben kann. Bei dieser Ausführungsform sind die verschiedenen Verschiebemöglichkeiten der Schiebehülse gemäß Fig. 2 mit der jenigen nach Fig. 5 kombiniert, d.h. die Schiebehülse kann durch Aufsetzen auf den Faßboden mittels der Druckstücke 19a entgegen der Wirkung der Feder 15 geöffent werden oder die Schiebehülse kann in die Offenstellung mittels der Betätigungseinrichtung 27 angehoben und auch wieder in die Schließstellung verschoben werden. Solange der Druckring 28 in der in Fig. 6 gezeigten Stellung durch die Betätigungseinrichtung 27 gehalten wird, erfolgt das Schließen des Pumpeneinlasses aufgrund der Federwirkung der Feder 15.The embodiment according to FIG. 6 shows a modification compared to that according to FIG. 5, which consists in that pressure pieces 19a are provided on the sliding sleeve 13c, which have the same function as the pressure pieces 19 in the embodiment according to FIG. 2. The modification 5 also consists in the fact that the actuating device 27 is connected to a pressure ring 28 of the spring 15 and thus not the sliding sleeve 13c directly, but first the pressure ring 28 and via the spring 15, both with the pressure ring 28 and with the sliding sleeve 13c is connected, this can move. In this embodiment, the different sliding possibilities of the sliding sleeve according to FIG. 2 are combined with that of FIG. 5, i.e. the sliding sleeve can be opened by placing it on the barrel bottom by means of the pressure pieces 19a against the action of the spring 15, or the sliding sleeve can be raised into the open position by means of the actuating device 27 and also moved back into the closed position. As long as the pressure ring 28 is held in the position shown in FIG. 6 by the actuating device 27, the pump inlet is closed due to the spring action of the spring 15.

Bei den Ausführungsformen nach den Fig. 7 und 8 sind im Gegensatz zu den bisher beschriebenen Ausführungsformen, bei denen Axialräder als Pumprotoren vorgesehen sind, Radialräder 29 vorgesehen. Dementsprechend ist der Einlauf anders gestaltet, und zwar ist dem Radialrad 29 ein Schleißring 30 zugeordnet, so daß die Flüssigkeit im wesentlichen im Bereich des Zentrums des Pumprotors in die Pumpe eingesaugt wird.In contrast to the previously described embodiments in which axial wheels are provided as pump rotors, radial wheels 29 are provided in the embodiments according to FIGS. 7 and 8. Accordingly, the inlet is designed differently, namely a wear ring 30 is assigned to the radial wheel 29, so that the liquid is sucked into the pump essentially in the region of the center of the pump protector.

Bei der Ausführungsform nach Fig. 7 ist eine Schiebehülse 31 mit einer als Boden ausgebildeten Grundplatte 32 fest und dicht verbunden und wird mittels einer Betätigungseinrichtung 27 in die in der rechten Hälfte der Fig. 7 gezeigte Offenstellung oder in die in der linken Hälfte der Fig. 7 gezeigte Schließstellung verschoben. Im unteren Bereich der Schiebehülse 31 sind Einlaßöffnungen 33 vorgesehen, durch die bei nach unten abgesenkter Schiebehülse 31 Flüssigkeit in den Zentralbereich des Pumprotors 29 gelangen kann. In der Schließstellung liegt die Grundplatte 32 an einer im Schleißring 30 eingesetzten Dichtung 37 an.In the embodiment according to FIG. 7, a sliding sleeve 31 is firmly and tightly connected to a base plate 32 designed as a base and is moved into the open position shown in the right half of FIG. 7 or into the left half of FIG. 7 shown closed position shifted. In the lower region of the sliding sleeve 31, inlet openings 33 are provided, through which liquid can reach the central region of the pumping protector 29 when the sliding sleeve 31 is lowered. In the closed position, the base plate 32 lies against a seal 37 inserted in the wear ring 30.

Die Ausführungsform nach Fig. 8 macht von dem in Fig. 2 und 6 gezeigten Prinzip hinsichtlich der Verschiebung der Schiebehülse Gebrauch. Hier ist die Grundplatte 32 mittels Abstandshalter 34 mit einem gewissen Abstand zum Schieißring 30 gehalten, so daß zwischen Schleißring 30 und Grundplatte 32 ein Einlaßspalt 35 verbleibt, durch den Flüssigkeit zur Einlaßöffnung des Schleißringes gelangen kann, wenn die Schiebehülse 31' entgegen der Wirkung der Feder 15' nach oben geschoben wird. Um eine solche Verschiebung zu ermöglichen, sind an der Unterseite der Schiebehülse 31 Druckstücke 36 entsprechend den Druckstücken 19 und 19' in den Fig. 2 und 6 angebracht. Die Feder 15' stützt sich gegen einen Druckring 28' ab, der mittels einer Betätigungsvorrichtung 27, wie bei der Ausführungsform nach Fig. 6 verschoben werden kann, so daß neben der Verschiebemöglichkeit aufgrund des Pumpgewichts und der Federwirkung auch noch eine willkürliche Verschiebemöglichkeit durch die Betätigungseinrichtung 27 besteht.The embodiment according to FIG. 8 makes use of the principle shown in FIGS. 2 and 6 with regard to the displacement of the sliding sleeve. Here, the base plate 32 is held by means of spacers 34 at a certain distance from the slide ring 30, so that an inlet gap 35 remains between the wear ring 30 and the base plate 32, through which liquid can reach the inlet opening of the wear ring if the sliding sleeve 31 'counter to the action of the spring 15 'is pushed up. In order to enable such a displacement, pressure pieces 36 corresponding to the pressure pieces 19 and 19 'in FIGS. 2 and 6 are attached to the underside of the sliding sleeve 31. The feather 15 'is supported against a pressure ring 28', which can be moved by means of an actuating device 27, as in the embodiment according to FIG. 6, so that in addition to the possibility of displacement due to the pump weight and the spring action, there is also an arbitrary possibility of displacement by the actuating device 27 .

Die Figuren 9 und 10 zeigen eine besonders bevorzugte Ausführungsform. Hinsichtlich des allgemeinen Aufbaus von Pumpenkörper und Elektromotor wird auf Fig. 1 verwiesen. Innerhalb eines Gehäusemantels 40 ist ein Stützrohr 41 für eine Rotorwelle 42 vorgesehen, das an ihrem unteren Ende in einem Lagerstern 43 und an ihrem oberen Ende in einem Gleitlager 44 durch Dichtungen 45 abgedichtet drehbar und längsverschiebbar gehalten ist.Figures 9 and 10 show a particularly preferred embodiment. With regard to the general structure of the pump body and electric motor, reference is made to FIG. 1. Within a housing shell 40, a support tube 41 is provided for a rotor shaft 42, which at its lower end in a star bearing 43 and at its upper end in a slide bearing 44 is rotatably and rotatably held by seals 45 and is longitudinally displaceable.

Zwischen dem Gehäusemantel 40 und dem Stützrohr 41 ist ein Ringkanal 46 gebildet, in dem die Flüssigkeit durch einen Pumprotor 47 zu einem Auslauf 48 gefördert wird, der sich am oberen Ende des Gehäusemantels 40 befindet. Oberhalb des Auslaufs 48 ist eine Trennwand 49 eingezogen, die das Gleitlager 44 trägt, so daß der Ringkanal 46 nach oben abgedichtet ist.Between the housing shell 40 and the support tube 41, an annular channel 46 is formed, in which the liquid is conveyed by a pump rotor 47 to an outlet 48, which is located at the upper end of the housing shell 40. Above the outlet 48, a partition 49 is drawn in, which carries the slide bearing 44, so that the annular channel 46 is sealed at the top.

Der Lagerstern 43 entspricht der üblichen Ausgestaltung solcher Lagersterne bei Faßpumpen und dient zur Abstützung des Stützrohres 41 und zur Lagerung der Rotorwelle 42 sowie zur Abdichtung derselben mittels einer Gleitringdichtung 50. Der Lagerstern weist üblicherweise drei bis vier sternförmig angeordnete Rippen 43a auf, zwischen denen Freiräume für den Durchtritt der durch den Pumprotor 47 geförderten Flüssigkeit verbleiben. Die sternförmigen Rippen 43a dienen nicht nur zur Abstützung des Lagerkörpers, sondern auch zur Ausrichtung der kreisenden Strömung in Axialrichtung.The bearing star 43 corresponds to the usual design of such bearing stars in barrel pumps and is used to support the support tube 41 and to support the rotor shaft 42 and to seal it by means of a mechanical seal 50. The bearing star usually has three to four ribs 43a arranged in a star shape, between which there is space for the passage of the liquid conveyed by the pump rotor 47 remains. The star-shaped ribs 43a serve not only to support the bearing body, but also to align the circulating flow in the axial direction.

Der untere Teil des Gehäusemantels ist als Kappe 51 ausgebildet, die auf den rohrförmigen Teil 40 aufgeschraubt ist. Die Kappe 51 dient als Pumpenfuß und weist eine größere Wandstärke als der verbleibende Gehäusemantel 40 auf. Die Kappe 51 nimmt im wesentlichen den Rotor 47 auf. Der zylinderförmige Teil der Kappe 51 geht in einen sich verjüngenden Teil 52 über, der als Kugelkalotte ausgebildet ist. Den Boden der Kappe bildet eine Grundplatte 53, die sich an den sich verjüngenden Teil 52 anschließt. Unmittelbar an der Grundplatte 53 sind in dem sich verjüngenden Teil 52 der Kappe 51 Einlaßöffnungen 54 vorgesehen, durch die der Rotor 47 die zu fördernde Flüssigkeit ansaugt.The lower part of the housing shell is designed as a cap 51, which is screwed onto the tubular part 40. The cap 51 serves as a pump foot and has a greater wall thickness than the remaining housing jacket 40. The cap 51 essentially receives the rotor 47. The cylindrical part of the cap 51 merges into a tapering part 52 which is designed as a spherical cap. The base of the cap forms a base plate 53 which adjoins the tapering part 52. Immediately on the base plate 53, inlet openings 54 are provided in the tapered part 52 of the cap 51, through which the rotor 47 sucks in the liquid to be conveyed.

Innerhalb des unteren Teils des Gehäusemantels, d.h. innerhalb der Kappe 51, ist eine Schiebehülse 55 vorgesehen, die einen zylindrischen durch eine Dichtung 56 gegenüber dem Gehäusemantel abgedichteten Teil 57 und einen sich nach unten hieran anschließenden düsenartig sich verjüngenden Teil 58 umfaßt, wobei dieser sich verjüngende Teil 58 der Form des Rotors 47 angepaßt ist und als Schleißring für den Radialrotor 47 dient. Mit der Mündung 59 der düsenartigen Verjüngung 58 ist die Schiebehülse 55 in ihrer unteren Schließstellung gegen die Grundplatte 53 dichtend anlegbar. Um eine gute Abdichtung zu erzielen, ist auf der Grundplatte eine Dichtscheibe 60 vorgesehen, die mit einem zentralen Schlitz 61 auf einen auf der Grundplatte 53 befestigten Steg 62 aufsteckbar ist, so daß sie gegen Verdrehen gesichert ist.Within the lower part of the housing shell, i.e. inside the cap 51, a sliding sleeve 55 is provided, which comprises a cylindrical part 57, which is sealed off from the housing jacket by a seal 56, and a nozzle-like tapering part 58 which adjoins it at the bottom, this tapering part 58 adapting to the shape of the rotor 47 is and serves as a wear ring for the radial rotor 47. With the mouth 59 of the nozzle-like taper 58, the sliding sleeve 55 can be placed sealingly against the base plate 53 in its lower closed position. In order to achieve a good seal, a sealing disk 60 is provided on the base plate, which can be plugged with a central slot 61 onto a web 62 fastened on the base plate 53, so that it is secured against rotation.

Die Grundplatte 53 ist nur wenig größer als der Durchmesser der Mündung 59 und damit im Durchmesser wesentlich kleiner als der Gehäusemantel. In der unteren in der Zeichnung nicht dargestellten Schließstellung werden die Einlaßöffnungen 54 verschlossen, da sie außerhalb der sich dichtend gegen die Dichtscheibe 60 anlegenden Mündung 59 vorgesehen sind, wodurch ein Auslaufen von Flüssigkeit aus der Pumpe verhindert ist. Da der sich verjüngende Bereich 52 der Kappe 51 unter einem Gesamtöffnungswinkel von weniger als 180° verläuft und die Öffnungen 54 sich unmittelbar an die Grundplatte 53 anschließen, liegen die radial inneren Bereiche der Einlaßöffnungen 54 unmittelbar über dem Faßboden, so daß in der in der Fig. 9 gezeigten Stellung der Schiebehülse 55 die Flüssigkeit aus einem Faß vollständig abgepumpt werden kann.The base plate 53 is only slightly larger than the diameter of the mouth 59 and thus much smaller in diameter than the housing jacket. In the lower closed position, not shown in the drawing, the inlet openings 54 are closed since they are provided outside the mouth 59 sealingly against the sealing disk 60, thereby preventing liquid from escaping from the pump. Since the tapered region 52 of the cap 51 extends at an overall opening angle of less than 180 ° and the openings 54 directly adjoin the base plate 53, the radially inner regions of the inlet openings 54 lie directly above the barrel base, so that in the position shown in FIG 9 shown position of the sliding sleeve 55, the liquid can be completely pumped out of a barrel.

Die Grundplatte 53, der sich verjüngende Teil 52 und der zylindrische Teil der Kappe 51 sind einstückig ausgeführt.The base plate 53, the tapered part 52 and the cylindrical part of the cap 51 are made in one piece.

Zur Verschiebung der Schiebehülse 55 ist diese an ihrem oberen Rand mit zwei Schubstegen 63 verbunden, die in radialer Richtung bezogen auf die Rotorachse in der Nähe der Innenwand des Gehäusemantels 40 verlaufen und durch die Freiräume im Lagerstern 43 greifen. Die oberen Enden der Schubstege 63 sind mit einer auf das Stützrohr 41 aufschiebbaren Nabe 64 verbunden, die mittels Sicherungsringen 65 am Stützrohr 41 festlegbar ist.To move the sliding sleeve 55, it is connected at its upper edge to two thrust bars 63, which run in the radial direction with respect to the rotor axis near the inner wall of the housing shell 40 and reach through the free spaces in the bearing star 43. The upper ends of the sliding webs 63 are connected to a hub 64 which can be pushed onto the support tube 41 and which can be fixed on the support tube 41 by means of retaining rings 65.

Das Stützrohr 41 ragt über das Gleitlager 44 nach oben hinaus und ist an seinem oberen Ende mit einer Handhabe 66, die als Bolzen ausgeführt ist, verbunden, welche durch einen Schlitz 67 im Gehäusemantel 40 hindurchgeführt ist. Der Schlitz 67 verläuft unter einem Winkel zur Längsachse der Pumpe und ist in senkrechter Stellung der Pumpe unter einem spitzen Winkel zur Horizontalen geneigt. Dieser Schlitz erstreckt sich etwa über 120° des Gehäusemantels und bildet eine Führung für die Handhabe 66, die bei ihrer Bewegung in diesem Schlitz 67 aufgrund der Neigung gegenüber der Längsachse angehoben bzw. abgesenkt wird. Diese Bewegung wird auf das Stützrohr 41 übertragen, das über die Schubstege 63 diese Bewegung auf die Schiebehülse 55 überträgt. In Fig. 9 ist die Schiebehülse in ihrer vollständig geöffneten Stellung gezeigt und umgibt den Pumprotor 47 mit engem Spalt.The support tube 41 protrudes upward beyond the slide bearing 44 and is connected at its upper end to a handle 66, which is designed as a bolt, which is guided through a slot 67 in the housing jacket 40. The slot 67 extends at an angle to the longitudinal axis of the pump and is inclined at an acute angle to the horizontal in the vertical position of the pump. This slot extends approximately over 120 ° of the housing shell and forms a guide for the handle 66, which is raised or lowered during its movement in this slot 67 due to the inclination relative to the longitudinal axis. This movement is transmitted to the support tube 41, which transmits this movement to the sliding sleeve 55 via the pushrods 63. 9 is the Sliding sleeve shown in its fully open position and surrounds the pump rotor 47 with a narrow gap.

Zum Auspumpen von Flüssigkeit aus einem Faß wird die Handhabe 66 so verdreht, daß sie sich am Ende des höher gelegenen Teils des Schlitzes 47 befindet, wodurch die Schiebehülse in die vollständig geöffnete Lage gelangt. Wenn das Faß leergepumpt ist, wird die Handhabe 66 in die andere Endlage des Schlitzes 47 bewegt, wodurch das Stützrohr 41 nach unten verschoben wird, so daß über die Schubstege 63 die Schiebehülse 55 nach unten bewegt wird, bis sich ihre Mündung 59 dichtend auf die Dichtscheibe 60 auflegt. In diesem Zustand kann die Pumpe aus dem Faß entnommen werden, ohne daß die im Ringraum 46 enthaltene Flüssigkeit wieder aus der Pumpe auslaufen könnte. Die Pumpe kann dann in ein kleines Gefäß umgesetzt werden, um ein Auslaufen dieser im Ringkanal befindlichen Restmenge zu ermöglichen. Hierdurch ist ein vollständiges Leerpumpen des Fasses und eine Entsorgung der Pumpe möglich.To pump out liquid from a barrel, the handle 66 is rotated so that it is located at the end of the higher part of the slot 47, whereby the sliding sleeve comes into the fully open position. When the barrel is pumped empty, the handle 66 is moved into the other end position of the slot 47, whereby the support tube 41 is displaced downward, so that the sliding sleeve 55 is moved downward over the sliding webs 63 until its mouth 59 seals onto the Sealing washer 60. In this state, the pump can be removed from the barrel without the liquid contained in the annular space 46 being able to run out of the pump again. The pump can then be transferred to a small vessel to allow this remaining amount in the ring channel to flow out. This enables the barrel to be completely emptied and the pump to be disposed of.

Claims (19)

1. Container pump with a pump rotor driven by a motor by way of a rotor shaft, by which the liquid is pumped up in an annular channel located between a support tube for the rotor shaft and a tubular outer casing, to an outlet connected thereto, the liquid being able to be sucked up through inlet openings at the lower end of the outer casing, characterised in that a base plate (12, 32, 53) is provided below the pump rotor (9, 47), at a distance therefrom and that a sliding sleeve (13, 13a, 13b, 13c, 31, 55), which is sealed with respect to the outer casing (5, 51) and is able to slide with respect thereto, is provided, which in one position uncovers the inlet openings (11, 33, 35, 54) and in another position closes off the pump inlet in conjunction with the base plate (12, 32, 53).
2. Container pump according to Claim 1, characterised in that the inlet openings (11, 33, 35, 54) are provided directly above the base plate (12, 32, 53).
3. Container pump according to Claim 1 or 2, characterised in that the sliding sleeve (13, 13a, 13b, 13c, 31) can be pushed into the closed position by a spring (15, 15') supported on a part integral with the pump and into the open position by the weight of the pump when placed on the bottom of the container.
4. Container pump according to one of Claims 1 or 3, characterised in that the base plate (12) is attached to the outer casing and the base plate (12) projects beyond the outer casing (5) in the radial direction, that the inlet openings (11) in the outer casing (5) are provided directly at the lower end of the latter, directly above the base plate (12), that the sliding sleeve (13, 13b, 13c, 31') can be pressed by its lower edge in a sealed manner against the base plate and that provided on the sliding sleeve (13, 13b, 13c, 31') are pressure plates (19, 19a, 36) projecting downwards in the closed position beyond the base plate (12, 32), which in the fully open position of the sliding sleeve, align with the under side of the base plate (12, 32) and whereof the length projecting beyond the base plate in the closed position corresponds substantially to the height of the inlet openings.
5. Container pump according to Claim 3 or 4, characterised in that surrounding the outer casing (5), the spring (15) at one end is supported against a flange (16) or thrust ring (28) located on the outer casing (5) and at the other end is supported on the upper edge (17) of the sliding sleeve (13, 13c, 31').
6. Container pump according to Claim 1 or 2 or according to Claim 4 or 5, characterised in that the sliding sleeve (13c, 31, 31') can be displaced from above by an actuating device (27) projecting from the container.
7. Container pump according to Claim 1 or one of Claims 3 or 5, characterised in that at a distance from its lower edge, the sliding sleeve (13a) comprises inlet openings (20) distributed on the periphery and that provided above the inlet openings is an inner shoulder (21), which in the closed position lies in a sealed manner against the base plate (12), which projects radially beyond the outer casing (5).
8. Container pump according to Claim 1 or 3, characterised in that at its lower end, the sliding sleeve (13b) comprises an inner flange or base (25) for supporting the spring (15'), which is supported by its other end on the under side of the base plate (12) and that inlet openings (20') are provided on the periphery of the sliding sleeve, in its lower part.
9. Container pump according to one of Claims 1 to 7, characterised in that the sliding sleeve (13a) is guided so that it is prevented from rotating, with respect to the outer casing (5), for example by a pin (24) engaging in a groove (23).
10. Container pump according to Claim 1 with a radial rotor, characterised in that the base plate (32) is connected in a sealed manner to the sliding sleeve (31) and with the latter can be displaced from above by an actuating device (27) projecting from the container, that in its lower part, the sliding sleeve (31) is provided with inlet openings (33) directly above the base plate, on the periphery, and that the base plate (32) can be sealed with respect to an anti-wear ring (30) associated with the radial rotor (29).
11. Container pump according to Claim 1 or 2, characterised in that below the pump rotor (47), the lower end (51) of the outer casing (40, 51) comprising the inlet openings (54), tapers in the manner of a nozzle (52), at a distance from the pump rotor, at an angle of inclination of less than 90° with respect to the longitudinal axis of the outer casing and is connected in a sealed manner to the base plate (53), which has a smaller diameter than the outer casing (40), other than at the inlet openings (54), that the inlet openings (54) are provided in the tapering part (52), that the sliding sleeve (55) is guided inside the outer casing (51) in a sealed manner (56) with respect thereto and in its lower region (58) is tapered in the manner of a nozzle, that the opening (59) of the sliding sleeve (55) can be applied in a sealed manner against the base plate (53), the inlet openings (54) in the outer casing (51) being provided radially outside the opening (59) of the sliding sleeve (55) and that the sliding sleeve (55) can be displaced from above by an actuating device (63, 41, 66) projecting from the container.
12. Container pump according to Claim 11, characterised in that the tapering part (52) of the outer casing (40, 51) is constructed as a flat truncated cone or as a spherical segment.
13. Container pump according to Claim 11 or 12, characterised in that when using a radial rotor (47), the lower tapered part (58) of the sliding sleeve (55) is adapted to the shape of the radial rotor in the manner of an anti-wear ring.
14. Container pump according to one of Claims 11 to 13, characterised in that attached to the sliding sleeve (55) are two pushing webs (63), which are connected to the support tube (41), which is guided displaceably and in a sealed manner (45) at one end in a bearing support (43) located above the pump rotor (47) and at the other end in a sliding bearing (44) above the outlet (48) and at its end projecting above the sliding bearing (44) is connected to a handle (66) engaging through an opening (67) in the outer casing (40) and that the opening (67) in the outer casing is constructed as a slot extending obliquely to the longitudinal axis of the pump and is disposed above the sliding bearing (44).
15. Container pump according to Claim 14, characterised in that the pushing webs (63) through the free spaces in the bearing support (43) are arranged to engage through the latter, radially with respect to the pump axis and at their ends remote from the sliding sleeve (55) are attached to a hub (64) able to be slid onto the support tube (41), which hub is in turn releasably attached to the support tube (41) for example by retaining rings (65).
16. Container pump according to one of Claims 10 to 15, characterised in that the seal (56) for sealing the sliding sleeve (55) with respect to the outer casing (51) is inserted in the inner wall of the cap (51).
17. Container pump according to one of Claims 10 to 16, characterised in that a seal (60) is located on the base plate (53).
18. Container pump according to Claim 17, characterised in that the seal (60) is constructed as a disc with a central slot (61), through which, in the installed state, a web (62) attached to the base plate (53) engages.
19. Container pump according to one of the preceding Claims 1 to 18, characterised in that the seal of the sliding sleeve (13, 13a, 13b, 13c, 31, 55) with respect to the outer casing (5, 51) is provided in the vicinity of the outlet (48) and that the sliding sleeve (13, 13a, 13b, 13c, 31, 51) replaces the outer casing below the sealing region towards the inlet openings.
EP88104035A 1987-03-16 1988-03-14 Container pump Expired - Lifetime EP0282956B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88104035T ATE63978T1 (en) 1987-03-16 1988-03-14 DRUM PUMP.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3708496 1987-03-16
DE3708496 1987-03-16
DE3718325 1987-06-01
DE3718325A DE3718325C2 (en) 1987-03-16 1987-06-01 DRUM PUMP

Publications (4)

Publication Number Publication Date
EP0282956A2 EP0282956A2 (en) 1988-09-21
EP0282956A3 EP0282956A3 (en) 1989-04-26
EP0282956B1 true EP0282956B1 (en) 1991-05-29
EP0282956B2 EP0282956B2 (en) 1996-05-01

Family

ID=25853530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88104035A Expired - Lifetime EP0282956B2 (en) 1987-03-16 1988-03-14 Container pump

Country Status (5)

Country Link
US (1) US4909704A (en)
EP (1) EP0282956B2 (en)
JP (1) JPS6415500A (en)
DE (2) DE3718325C2 (en)
ES (1) ES2022940T5 (en)

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DE19630347A1 (en) * 1996-01-04 1997-07-10 Gruen Foerdertechnik Gmbh Barrel pump for pumping low viscosity fluids
CN110821842A (en) * 2019-12-06 2020-02-21 芜湖裕优机械科技有限公司 Working wheel for centrifugal pump and centrifugal pump

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DE3718425C2 (en) * 1987-06-02 1995-09-07 Flux Geraete Gmbh Pump, especially barrel pump
DE3733307C2 (en) * 1987-10-02 1995-03-09 Flux Geraete Gmbh Pump, especially barrel pump
DE19614350C2 (en) * 1996-04-11 1999-08-26 Lutz Pumpen Gmbh & Co Kg Pump, especially barrel pump
DE19938760C1 (en) * 1999-08-16 2001-01-18 Lutz Pumpen Gmbh & Co Kg Electrically-driven cask pump has sealing cone at end of pump rotor shaft for closing annular entry opening at bottom end of tubular pump housing upon axial movement of rotor shaft
DE19942701C1 (en) * 1999-09-07 2000-10-12 Brigitte Hoffmann Barrel pump has a footplate with openings at the entry zone facing the openings in the bottom plate of a rotating sleeve to open and close them and bring the rotor close to the barrel bottom
DE10044966B4 (en) * 2000-09-11 2004-07-15 Gardena Manufacturing Gmbh submersible pump
DE10338705A1 (en) * 2003-05-26 2004-12-16 Grün-Pumpen GmbH Pump mechanism used especially for a barrel pump comprises a valve unit having a valve disk on which an ejector pin presses and lifts the valve disk off the valve seat on contact with a pump foot
DE202004019338U1 (en) 2004-12-15 2005-02-17 Flux-Geräte GmbH submersible pump
JP4906599B2 (en) * 2007-06-01 2012-03-28 リオン株式会社 hearing aid
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FR2942819A1 (en) * 2009-03-09 2010-09-10 Voisin J Automatic flush for draining waste water contained in waste water dispensing tank in waste water treating plant, has shaft provided with one end leaving from tubular body by joint and connected to single phase motor
US10428821B2 (en) * 2009-08-07 2019-10-01 Molten Metal Equipment Innovations, Llc Quick submergence molten metal pump
US10465688B2 (en) 2014-07-02 2019-11-05 Molten Metal Equipment Innovations, Llc Coupling and rotor shaft for molten metal devices
US10947980B2 (en) 2015-02-02 2021-03-16 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened blade tips
US11149747B2 (en) 2017-11-17 2021-10-19 Molten Metal Equipment Innovations, Llc Tensioned support post and other molten metal devices
US11471938B2 (en) 2019-05-17 2022-10-18 Molten Metal Equipment Innovations, Llc Smart molten metal pump
CN113236578B (en) * 2021-04-29 2022-05-20 南京工程学院 Shaft end blade cavitation prevention mechanism capable of automatically extending out
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DE19630347A1 (en) * 1996-01-04 1997-07-10 Gruen Foerdertechnik Gmbh Barrel pump for pumping low viscosity fluids
DE19630347C2 (en) * 1996-01-04 1998-10-08 Gruen Foerdertechnik Gmbh Barrel pump
CN110821842A (en) * 2019-12-06 2020-02-21 芜湖裕优机械科技有限公司 Working wheel for centrifugal pump and centrifugal pump

Also Published As

Publication number Publication date
DE3718325A1 (en) 1988-10-13
DE3718325C2 (en) 1989-01-19
ES2022940T5 (en) 1996-10-01
JPS6415500A (en) 1989-01-19
ES2022940B3 (en) 1991-12-16
EP0282956A2 (en) 1988-09-21
US4909704A (en) 1990-03-20
EP0282956B2 (en) 1996-05-01
EP0282956A3 (en) 1989-04-26
DE3862959D1 (en) 1991-07-04

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