EP0282956A2 - Pompe pour récipient - Google Patents

Pompe pour récipient Download PDF

Info

Publication number: EP0282956A2
Authority: EP; European Patent Office
Prior art keywords: sliding sleeve; base plate; pump; inlet openings; barrel
Prior art date: 1987-03-16
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP88104035A

Other languages

German (de)

English (en)

Other versions

EP0282956B2 (fr

EP0282956B1 (fr

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.)

1987-03-16

Filing date

1988-03-14

Publication date

1988-09-21

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25853530&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0282956(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1988-03-14 Application filed by Karl Lutz Firma, Lutz Pumpen GmbH and Co KG filed Critical Karl Lutz Firma

1988-03-14 Priority to AT88104035T priority Critical patent/ATE63978T1/de

1988-09-21 Publication of EP0282956A2 publication Critical patent/EP0282956A2/fr

1989-04-26 Publication of EP0282956A3 publication Critical patent/EP0282956A3/de

1991-05-29 Application granted granted Critical

1991-05-29 Publication of EP0282956B1 publication Critical patent/EP0282956B1/fr

1996-05-01 Publication of EP0282956B2 publication Critical patent/EP0282956B2/fr

2008-03-14 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use

Definitions

the invention relates to a drum 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-PS 34 12 873), especially when it comes to environmentally harmful liquids, two problems arise.
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 liquid quantity corresponding to the distance of the openings to the end of the housing shell remains in the barrel. In addition to this residual amount, there is the amount of liquid in the pump that runs back into the drum 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 aligned 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 auto Matic actuation caused by the spring can also be influenced by manual actuation.
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 jacket, which has the inlet openings, tapers below the pump protector at a distance from it at an overall 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 can be displaced from above by an actuating device protruding from the barrel is.
the arrangement of the sliding sleeve within the housing shell avoids an increase in diameter, so that the pump even with narrow discharge openings, such as the previously known drum pumps can be inserted.
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.
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 at its end projecting beyond the slide bearing is connected 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 retaining rings . Due to this radial arrangement, the sliding webs take on a compensating effect on the liquid caused by the rotor to rotate in addition to the bearing star, so that a largely calmed axial flow of the liquid within the ring 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 rather this cap serving as a pump foot, which particularly bumps exposed when the pump is inserted and switched off can be formed in this way as a particularly stable component with a greater 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 seal between the housing jacket and the sliding sleeve he follows. 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 jacket and the sliding sleeve would extend parallel to each other 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 the sliding sleeve would result in an unnecessary increase in weight. 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, whose connecting line is designated 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.
At the lower end of the housing shell 5 there are inlet openings 11 through which the liquid reaches the pump rotor 9.
a base plate 12 is provided at the lower end of the housing shell 5 and is fixedly 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 is height 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 due to the height of the ring 22nd
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.
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 so far down by the spring 15 ⁇ that the inlet openings 20 ⁇ below the top of the bottom plate 12 lie.
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 relative to the housing jacket 5 against the action of the spring 15 ⁇ upwards, 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 with a base plate 32 designed as a base is fixed and tightly connected and is moved by means of an actuating device 27 in the open position shown in the right half of FIG. 7 or in the closed position shown in the left half of FIG. 7.
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 at a certain distance from the wear ring 30 by means of spacers 34, 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 spring 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 for a rotor shaft is located within a housing shell 40 42 is provided, which is sealed at its lower end in a bearing star 43 and at its upper end in a sliding bearing 44 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 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 a barrel can be pumped out completely.
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 projects upwards 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.
the sliding sleeve is 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 in 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)

EP88104035A 1987-03-16 1988-03-14 Pompe pour récipient Expired - Lifetime EP0282956B2 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT88104035T ATE63978T1 (de)	1987-03-16	1988-03-14	Fasspumpe.

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 (de)	1987-03-16	1987-06-01	Fasspumpe

Publications (4)

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

Family

ID=25853530

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP88104035A Expired - Lifetime EP0282956B2 (fr)	1987-03-16	1988-03-14	Pompe pour récipient

Country Status (5)

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

Cited By (3)

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DE29600125U1 (de) *	1996-01-04	1997-05-07	Gruen Foerdertechnik Gmbh	Pumpwerk
EP1672220A2 (fr)	2004-12-15	2006-06-21	Flux-Geräte GmbH	Pompe submersible
FR2942819A1 (fr) *	2009-03-09	2010-09-10	Voisin J	Chasse automatique pour eaux usees et station d'epuration des eaux comportant une telle chasse

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DE3718425C2 (de) *	1987-06-02	1995-09-07	Flux Geraete Gmbh	Pumpe, insbesondere Faßpumpe
DE3733307C2 (de) *	1987-10-02	1995-03-09	Flux Geraete Gmbh	Pumpe, insbesondere Faßpumpe
DE19614350C2 (de) *	1996-04-11	1999-08-26	Lutz Pumpen Gmbh & Co Kg	Pumpe, insbesondere Faßpumpe
DE19938760C1 (de) *	1999-08-16	2001-01-18	Lutz Pumpen Gmbh & Co Kg	Fasspumpe
DE19942701C1 (de) *	1999-09-07	2000-10-12	Brigitte Hoffmann	Pumpe, insbesondere Faßpumpe
DE10044966B4 (de) *	2000-09-11	2004-07-15	Gardena Manufacturing Gmbh	Tauchpumpe
DE10338705A1 (de) *	2003-05-26	2004-12-16	Grün-Pumpen GmbH	Pumpwerk mit Pumpfuß
JP4906599B2 (ja) *	2007-06-01	2012-03-28	リオン株式会社	補聴器
CN101874174A (zh) *	2007-11-28	2010-10-27	富兰克林加油系统公司	入口护套
US10428821B2 (en) *	2009-08-07	2019-10-01	Molten Metal Equipment Innovations, Llc	Quick submergence molten metal pump
US10138892B2 (en)	2014-07-02	2018-11-27	Molten Metal Equipment Innovations, Llc	Rotor and rotor shaft for molten metal
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
US11858036B2 (en)	2019-05-17	2024-01-02	Molten Metal Equipment Innovations, Llc	System and method to feed mold with molten metal
CN110821842B (zh) *	2019-12-06	2020-10-27	江苏升亚泵阀制造有限公司	一种用于离心泵的工作轮和离心泵
CN113236578B (zh) *	2021-04-29	2022-05-20	南京工程学院	一种自动伸出的轴端叶片防汽蚀机构
US11873845B2 (en)	2021-05-28	2024-01-16	Molten Metal Equipment Innovations, Llc	Molten metal transfer device
US12146508B2 (en)	2022-05-26	2024-11-19	Molten Metal Equipment Innovations, Llc	Axial pump and riser

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DE3214185A1 (de) *	1982-04-17	1983-10-20	Flux-Geräte GmbH, 7000 Stuttgart	Pumpe, insbesondere fasspumpe

1987
- 1987-06-01 DE DE3718325A patent/DE3718325C2/de not_active Expired
1988
- 1988-03-11 US US07/166,720 patent/US4909704A/en not_active Expired - Lifetime
- 1988-03-14 DE DE8888104035T patent/DE3862959D1/de not_active Expired - Fee Related
- 1988-03-14 ES ES88104035T patent/ES2022940T5/es not_active Expired - Lifetime
- 1988-03-14 EP EP88104035A patent/EP0282956B2/fr not_active Expired - Lifetime
- 1988-03-16 JP JP63064659A patent/JPS6415500A/ja active Pending

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Publication number	Priority date	Publication date	Assignee	Title
US1890683A (en) *	1929-09-11	1932-12-13	Owen J Hughes	Foot valve
JPS5664192A (en) *	1979-10-29	1981-06-01	Hitachi Ltd	Valve structure in liquefied gas pump
JPS59138793A (ja) *	1983-01-28	1984-08-09	Hitachi Ltd	液化ガス汲上げ用ポンプ装置
DE3412873A1 (de) *	1984-04-05	1985-10-17	Fa. Karl Lutz, 6980 Wertheim	Pumpe, insbesondere fasspumpe

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Title
PATENT ABSTRACTS OF JAPAN, Band 5, Nr. 127 (M-83)[799], 15. August 1981; & JP-A-56 064 192 (HITACHI SEISAKUSHO K.K.) 01-06-1981 *
PATENT ABSTRACTS OF JAPAN, Band 8, Nr. 267 (M-343)[[704], 7. Dezember 1984; & JP-A-59 138 793 (HITACHI SEISAKUSHO K.K.) 09-08-1984 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE29600125U1 (de) *	1996-01-04	1997-05-07	Gruen Foerdertechnik Gmbh	Pumpwerk
EP1672220A2 (fr)	2004-12-15	2006-06-21	Flux-Geräte GmbH	Pompe submersible
EP1672220A3 (fr) *	2004-12-15	2008-08-20	Flux-Geräte GmbH	Pompe submersible
FR2942819A1 (fr) *	2009-03-09	2010-09-10	Voisin J	Chasse automatique pour eaux usees et station d'epuration des eaux comportant une telle chasse

Also Published As

Publication number	Publication date
JPS6415500A (en)	1989-01-19
ES2022940T5 (es)	1996-10-01
US4909704A (en)	1990-03-20
ES2022940B3 (es)	1991-12-16
DE3718325C2 (de)	1989-01-19
EP0282956B2 (fr)	1996-05-01
DE3718325A1 (de)	1988-10-13
DE3862959D1 (de)	1991-07-04
EP0282956B1 (fr)	1991-05-29
EP0282956A3 (en)	1989-04-26

Publication	Publication Date	Title
EP0282956B1 (fr)	1991-05-29	Pompe pour récipient
DE1757085A1 (de)	1971-03-18	Zapfhahn
DE1298882B (de)	1969-07-03	Fluessigkeitspumpe, insbesondere Lenzpumpe
EP0988244A1 (fr)	2000-03-29	Dispositif pour extraire des materiaux d'un silo
DE2146695B2 (de)	1981-01-29	Wellenabdichtung für den Elektromotor eines Tauchpumpenaggregates
DE3224710C2 (de)	1990-06-21	Schneckenpumpe mit an beiden Enden gelagerter Schnecke
DE29910596U1 (de)	1999-09-09	Vorrichtung zum Zerkleinern von Feststoffen in inhomogenen Flüssigkeiten
EP0188717B1 (fr)	1988-07-27	Mélangeur
DE4122680C2 (de)	1994-03-31	Rührwerksmühle
DE60103643T2 (de)	2005-06-16	Proportionalvolumetrischer injektor-spender
EP0059928A1 (fr)	1982-09-15	Dispositif pour vider un récipient cylindrique contenant, en particulier, une masse visqueuse
WO1991014508A1 (fr)	1991-10-03	Reservoir sous pression pour la projection d'un liquide
DE2433017A1 (de)	1975-01-30	Vorrichtung zum extrahieren der in einer wasserhaltigen substanz, beispielsweise zuckerruebenpulpe, enthaltenen fluessigkeit durch druckanwendung
DE3718425C2 (de)	1995-09-07	Pumpe, insbesondere Faßpumpe
DE8715134U1 (de)	1988-01-14	Faßpumpe
DE3540025A1 (de)	1987-05-14	Abdichtung fuer eine rotierende, im betrieb aufrecht stehende welle, insbesondere fuer wellen von pumpen und ruehrern
DE19630347C2 (de)	1998-10-08	Faßpumpe
DE7724623U1 (de)	1977-12-01	Einrichtung zum trennen von festen und fluessigen stoffen
DE1542040B2 (de)	1971-05-13	Dosierschoepfrad
DE68908977T2 (de)	1994-04-28	Schaftlagervorrichtung.
DE3409464C2 (de)	1986-05-22	Vorrichtung für Dichtungsteile einer aus einem Gehäuse austretenden, drehbaren Welle
EP1862673A2 (fr)	2007-12-05	Pompe pour réservoir
DE2808677A1 (de)	1978-09-07	Zentrifuge und trennverfahren
DE973688C (de)	1960-05-25	Einrichtung zum Foerdern von Fetten oder anderen zaehen oder plastischen Stoffen auseinem Behaelter, z. B. einem Fass, mittels einer Fasspumpe od. dgl.
DE3733307C2 (de)	1995-03-09	Pumpe, insbesondere Faßpumpe

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