EP3099899B1 - Screw spindle pump - Google Patents

Screw spindle pump Download PDF

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Publication number
EP3099899B1
EP3099899B1 EP15705510.4A EP15705510A EP3099899B1 EP 3099899 B1 EP3099899 B1 EP 3099899B1 EP 15705510 A EP15705510 A EP 15705510A EP 3099899 B1 EP3099899 B1 EP 3099899B1
Authority
EP
European Patent Office
Prior art keywords
guide rail
housing
screw spindle
rail arrangement
spindle 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.)
Active
Application number
EP15705510.4A
Other languages
German (de)
French (fr)
Other versions
EP3099899A1 (en
Inventor
Thomas Eschner
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.)
Klaus Union GmbH and Co KG
Original Assignee
Klaus Union 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
Application filed by Klaus Union GmbH and Co KG filed Critical Klaus Union GmbH and Co KG
Publication of EP3099899A1 publication Critical patent/EP3099899A1/en
Application granted granted Critical
Publication of EP3099899B1 publication Critical patent/EP3099899B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/08Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/16Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/007General arrangements of parts; Frames and supporting elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/02Arrangements of bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10Outer members for co-operation with rotary pistons; Casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0088Lubrication
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02Lubrication; Lubricant separation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00Manufacture
    • F04C2230/60Assembly methods
    • F04C2230/603Centering; Aligning
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00Manufacture
    • F04C2230/60Assembly methods
    • F04C2230/604Mounting devices for pumps or compressors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00Manufacture
    • F04C2230/70Disassembly methods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00Manufacture
    • F04C2230/80Repairing methods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2230/00Manufacture
    • F04C2230/85Methods for improvement by repair or exchange of parts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/20Rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/30Casings or housings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/50Bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/50Bearings
    • F04C2240/52Bearings for assemblies with supports on both sides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00Components
    • F04C2240/80Other components
    • F04C2240/802Liners

Definitions

  • the invention relates to a screw pump, comprising a housing, which surrounds a delivery chamber, two spindles, namely a drive spindle and an opposite running spindle, a housing insert, which is arranged in the housing and in which the spindles are accommodated, at least one bearing element connected to the housing insert on which bearings of the spindles are arranged, and with at least one housing cover closing a housing cover and with a guide rail arrangement.
  • Such screw pumps are known in various configurations from the prior art. They are used to convey fluids and multiphase mixtures of various kinds.
  • the drive spindle and the spindle have parallel profile packages which mesh with each other without contact, wherein the profile packages together with the housing insert form VerdrängerIER that convey the fluid axially from a suction side to a pressure side with opposite rotation of the spindles.
  • the spindle is drivingly connected to the drive spindle via a gear transmission, whereby the meshing movement of the profile packs of the two spindles is realized.
  • the gearbox is usually outside the pumping room.
  • the bearings of the spindles are usually arranged on bearing elements or bearing caps, which are connected at opposite end faces from the outside to the housing, that is usually bolted.
  • the housing outwardly final housing cover is connected in the known screw pumps via the bearing cap to the housing, that is, for example, on the housing an end-side flange is formed, via which both the bearing cap and the housing cover means Bolt be attached to the housing.
  • the bearing cap is fixed between the flange of the housing and the housing cover.
  • the spindles For screw pumps, the spindles must be removed from the housing for maintenance and inspection purposes.
  • the known screw pumps have the disadvantage that in each case the complete pump, i. including the housing, must be dismantled. The inlets and outlets of the pump must be disconnected from the connected fluid lines. The housing covers are removed. The entire, up to several tons pump housing is rotated by 90 °, so that finally, using a suitable Hubzeuges, the spindles in the vertical direction can be lifted out of the housing.
  • the GB 541 601 A discloses a unit formed of the bearing member, the housing insert and the spindles received therein. This unit can be removed after removal of the housing cover through the housing opening from the housing.
  • a disadvantage of this embodiment is that for removing the unit, a suitable Hubmaschine is required and the removal is expensive.
  • the core idea of the invention is to combine the housing insert with the spindles accommodated therein and the bearing elements into a unit that can be removed as a whole from the housing of the pump for maintenance or inspection work.
  • only the housing cover must be removed. This releases the housing opening, through which the unit of bearing element, housing insert and spindles is removed without further measures.
  • the screw pump according to the invention makes it possible to leave the housing "in the field".
  • the connections to the fluid lines connected to the pump can be maintained. It is only the unit of bearing element, thus preferably connected housing insert and spindles removed from the housing. The required work will be carried out on it (if necessary after dismantling the unit separately). Thereafter, the unit is inserted back into the housing, and finally the housing is closed again by means of the housing cover.
  • the housing cover holds the unit in the housing in its axial position. This means that, as stated above, only the housing cover must be removed in order to remove the unit consisting of bearing element, housing insert and spindles from the housing, without further steps are required.
  • the bearing element is designed as a bearing cap whose outer diameter is equal to the inner diameter of the housing opening.
  • the bearing cap preferably ends flush with the edge of the housing opening in the axial direction.
  • the housing cover is connected directly to the housing, for example by screwing. The housing cover rests flat against the bearing cover which terminates flush with the edge of the housing opening, so that the bearing cover arranged on the end face of the unit and thus the unit consisting of bearing cap, housing insert and spindles is fixed overall in the axial direction.
  • guide elements are arranged on the housing and / or on the unit, on which the unit is guided in the housing in the axial direction.
  • the guidance of the unit consisting of bearing element, housing insert and spindles in the housing facilitates the removal and reinserting of the unit through the housing opening.
  • the guide elements ensure that the housing is correctly aligned relative to the unit.
  • the guide can furthermore advantageously be configured such that the unit can slide out of the housing or into it in the axial direction with comparatively little resistance and thus little effort.
  • At least one detachable guide rail arrangement which has at least one guide rail extending in the longitudinal direction of the screw pump and on which the unit in the housing is guided in the axial direction. This allows the unit to be quickly and easily inserted or removed from the housing. By the guide rail assembly, the unit is particularly precisely aligned and can be used without jamming into the housing. Maintenance and inspection work on the screw pump according to the invention can be carried out so much easier and cheaper than the known from the prior art pumps.
  • the advantage of the removable guide rail arrangement is that on the one hand the insertion of the unit can be simplified on the one hand. Because the Guide rail assembly is removable, but on the other hand impedes the operation of the screw pump, for example, by standing in the way, not.
  • the removable guide rail assembly is preferably non-positively and / or positively arranged on the screw pump. As a result, the guide rail assembly can be quickly and easily assemble or disassemble. Ideally screwed or plug connections are suitable for this purpose.
  • the guide rail arrangement according to the invention can be arranged both on the transmission side and on the drive side on the screw pump.
  • the drive side the side at which a motor is located, which drives the drive spindle.
  • On the transmission side is a gear, preferably a gear transmission, which connects the spindle to the drive spindle, whereby the meshing movement of the profile packages of the two spindles is realized.
  • the guide rail assembly may include at least one post for supporting the guide rail.
  • the supports make it possible to align the guide rails parallel to the floor or to a base plate on which the spindle screw pump stands.
  • the support can be designed as a telescopic extension or telescopic tubes. It can be extended by pulling rails, tubes or rods apart. The support is thus telescopic.
  • the support is perpendicular to the ground. To better absorb and distribute the weight, it can have a bottom plate.
  • the support can also be designed so that it has an opening through which a guide rail can be performed. Ideally, the cross section of the opening corresponds exactly to the outer dimension of the guide rail.
  • the opening is polygonal, in particular quadrangular, formed. The breakthrough may be variable in size.
  • the support may have an adjusting element, which may protrude differently far into the opening or the part of the guide rail receiving the Breakthrough various limits and thereby adapts the size of the breakthrough to the dimensions of the guide rail. This has the consequence that the support for different sized guide rails can be used.
  • the support has an adjusting means for aligning the unit and / or the guide rail.
  • this is an adjusting screw.
  • the adjusting means allows the guide rail to be aligned particularly accurately. As a result, the axes of the pump housing and the unit can be easily aligned.
  • the support can be arranged both on the housing as well as on the guide rail.
  • the design of the support depends in particular on the guide rail to be supported.
  • the guide rail arrangement preferably has two guide rails, which run in particular parallel to one another.
  • the two parallel rails ensure that the unit is aligned exactly parallel to the ground and that it can be inserted properly oriented into the housing.
  • the guide rails can be arranged on the housing.
  • the guide rails can be connected to each other by means of a transverse strut. As a result, the guide rail assembly is mechanically reinforced, whereby they can safely absorb the heavy weight of the unit, without breaking.
  • a guide rail arrangement with two guide rails is preferably arranged on the screw side of the pump spindle according to the invention.
  • the guide rails each have a support at the opposite end of the housing, whereby they can be aligned parallel to the ground.
  • the supports are preferably telescopic.
  • the supports can also be connected to the crossbar.
  • the guide rail may preferably have a groove. Through the groove a particularly secure guidance of the leading element is ensured.
  • the groove preferably extends in the longitudinal direction of the guide rail. Ideally, the groove extends over the entire longitudinal extent of the guide rail.
  • a support element On the housing insert or on the unit may be arranged a support element.
  • the support member extends in particular horizontally and can at least partially rest on the guide rails. By the support member, the unit can be picked up by the rails and placed along the guide rails in the housing.
  • the support element is preferably arranged on a base surface of the housing insert.
  • the support element may have roll-shaped body.
  • the roller-shaped bodies are preferably arranged on the support element such that they can come into contact with a guide rail.
  • the use of rollers enables a low-friction movement of the unit.
  • the rollers are arranged at the ends of the support element and can thus roll along the two mutually parallel rails, in particular in its grooves.
  • the support element may have at least one adjusting means, in particular an adjusting screw.
  • the adjustment means By means of the adjustment means, the unit can be aligned both in the vertical and horizontal direction.
  • the guide rail can be arranged on the housing insert or on the unit. Ideally, the guide rail is then arranged on the drive side of the screw pump. A guide rail leading the support is preferably arranged on the drive side of the housing. In order to align the guide rail, the support may have at least one adjustment. Preferably, the support on an opening through which the guide rail is feasible.
  • the guide rail is designed in several parts. It consists of several, at least two, arranged one behind the other and detachable parts together. In tight space between the motor and the housing can thus be removed from the outstanding on the drive side of the guide rail.
  • the guide rail is thus not an insertion of the unit into the housing in the way.
  • the individual parts of the guide rail can be preferably non-positively and / or positively connect with each other. A screw connection has proven particularly suitable.
  • the transmission-side guide rail and the support for the drive-side guide rail are mounted on the pump housing.
  • the supports for the Gear-side guide rails are mounted on the guide rails and aligned so that the guide rails are parallel to the base plate.
  • the transmission-side housing insert support and the drive-side guide rail is attached to the unit.
  • the unit is positioned in the pump housing so that the drive-side guide rail can be received by the drive-side support.
  • the unit with the transmission-side housing insert support is placed on the transmission-side guide rails.
  • the rollers of the housing insert support should be positioned in the grooves of the guide rails so that they can roll friction.
  • the unit In order to align the axes of the pump housing and the unit, the unit is aligned by means of alignment means on the transmission-side housing insert support and the support for the drive-side guide rail in a horizontal and vertical position. Now the unit can be pushed into the pump housing. If there is only little space between the pump and the motor, then the part protruding on the drive side can be dismantled in the case of a multi-part drive-side guide rail. After the unit is completely arranged in the pump housing, the guide rail assemblies can be disassembled again. After closing the housing with a cover, the screw pump is now ready for operation.
  • an anti-twist device is preferably provided in the screw pump according to the invention, which prevents axial rotation of the unit consisting of bearing element, housing insert and spindles.
  • the unit is preferably, as explained above, without further fasteners, that is held only by the or the housing cover in its axial position.
  • an anti-rotation can be provided, for example in the form of positive-locking elements which are formed on the housing cover and in the unit (for example, in the bearing cap) intervene to a simple and safe way, an unwanted twisting or Incorrect installation of the pump after carrying out the maintenance or revision work to prevent.
  • lubricant channels are formed in the bearing element, which serve to lubricate the bearings of the spindles.
  • the lubricant channels open into at least one end-side lubricant opening of the bearing element. It is usual in screw pumps to connect the bearings with inlet and outlet channels for lubricants via which lubricant can be continuously supplied or removed.
  • the pump is connected to an external lubricant supply system. According to the invention, it is preferably provided that the supply and the discharge of the lubricant take place via the end face of the bearing element.
  • corresponding lubricant channels may be provided in the housing cover, which pass from the front of the housing cover to the rear side, wherein a rear opening of the lubricant channel of the housing cover with closed housing cover with the frontal lubricant opening of the bearing element coincides.
  • the invention thus enables a reliable lubrication of the spindles in the usual manner via corresponding formed in the bearing element lubricant channels.
  • the supply and removal of the lubricant is preferably carried out via the housing cover. To separate or restore the lubricant supply and removal when removing the unit from the housing, the lubricant channels do not have to be separated or reconnected.
  • the lubricant connection When opening the housing cover, the lubricant connection is automatically interrupted without further work steps.
  • the lubricant connection is in turn automatically produced without further work steps.
  • a transmission housing may be formed, which receives a drive spindle with the spindle connecting gear (eg gear transmission) in it and protects.
  • FIGS. show a particularly preferred embodiment of the invention. However, the invention is not limited to the embodiment shown.
  • the figures show an embodiment of a total designated by the reference numeral 1 screw pump according to the invention.
  • the housing 2 surrounds a delivery chamber 5 of the pump, in which a housing insert 6 is located.
  • the housing insert 6 accommodates a drive spindle 7 and an opposite running spindle 8.
  • the profile packages of the drive spindle 7 and the running spindle 8 mesh with one another and together with the profile packs with small gap enclosing pressure chambers 6' and 6" of the housing insert 6 displacer spaces through which axially conveying a fluid to be conveyed from inlet chambers 9 communicating with the inlet 3 into an outlet chamber 10 communicating with the outlet 4.
  • Bearings 12 of the spindles 7, 8 are formed on front and rear bearing elements 13 'and 13 "in the form of bearing caps.
  • the bearings 12 are antifriction bearings.
  • a housing cover 14 ', 14 " which closes a front or a rear opening of the housing 2, is respectively arranged on the front side and the rear side of the housing 2.
  • the housing covers 14', 14" have screwed connection collars, as shown in the figures on, over which the housing cover 14 ', 14 "are screwed to the housing 2.
  • the bearing elements 13 ', 13 "form a unit with the housing insert 6 and the spindles 7, 8 accommodated therein, which in the FIG. 3 generally designated by the reference numeral 15.
  • the unit 15 is, as in FIG. 3 shown by the front opening of the housing 2 in the direction of arrow removed from this after the housing cover 14 'has been removed.
  • the housing cover 14 ', 14 "keep the unit 15 of bearing elements 13', 13", housing insert 6 and spindles 7, 8 in their axial position.
  • the outer diameter of the bearing cover designed as bearing elements 13 ', 13 "equal to the inner diameter of the front and rear housing openings, the bearing elements 13', 13” each flush on the end face of the housing 2 with the edge of the housing opening in the axial direction, so that the housing cover 14 connected to the housing 14 ", 14" flat against the bearing elements 13 ', 13 "and so the entire unit 15 in the in the Figures 2 and 4 hold shown axial position.
  • FIG. 4 shows, in the bearing elements 13 ', 13 "lubricant channels 16' and 16" formed, which serve to lubricate the bearings 12.
  • the lubricant channels 16 ', 16 "open into end openings of the bearing elements 13' and 13", wherein these openings with openings in the housing covers 14 ', 14 "formed lubricant channels 17', 17" cover, so that on the housing cover 14th ', 14 "lubricant can be added and removed.
  • a transmission housing is formed that receives a drive gear 7 with the spindle 8 connecting gear transmission (not shown).
  • FIG. 5 shows a schematic view of a screw pump 1 according to the invention in one embodiment.
  • the screw pump 1 comprises a housing 2, which surrounds a delivery chamber, two spindles, a drive spindle 7 and an opposite running spindle 8, a housing insert 6, which is arranged in the housing 2 and in which the spindles 7, 8 are received, and at least one attached to the housing insert 2 bearing element 13, on the bearing 12 of the spindles 7, 8 are arranged.
  • the screw pump 1 has at least one removable guide rail arrangement 18 ', 18 ", which has at least one guide rail 20, 28 extending in the longitudinal direction of the screw pump 1 FIG. 1
  • the screw pump 1 has both a transmission-side 18 'and a drive-side guide rail arrangement 18 ".
  • the transmission-side guide rail assembly 18 ' has two guide rails 20', 20 "parallel to one another.
  • the two parallel rails 20 ', 20" can be used to ensure that the unit 15 is aligned exactly parallel to the ground and oriented correctly Housing 2 can be introduced.
  • the guide rails 20', 20" are connected to one another by means of a transverse strut 24. As a result, the guide rail assembly 18 'mechanically reinforced, whereby they can safely hold the high weight of the unit 15 without breaking.
  • the supports 22 extend perpendicular to the floor and are preferably telescopically formed Cross strut 24 connected.
  • a support member 26 is arranged on the housing insert 6 or on the unit 15.
  • the support element 26 extends in particular horizontally and can rest at least partially on the guide rails 20 ', 20 ".
  • the support element 26 can receive the unit 15 from the rails 20', 20" and into the housing 2 along the guide rails 20 ', 20 "
  • the support element 26 is preferably arranged on a base surface of the housing insert 6.
  • the screw pump 1 has a drive-side guide rail arrangement 18 ". comprises a support 30 arranged on the housing 2 and a guide rail 28 arranged on the housing insert 6 or on the unit 15.
  • FIG. 6 shows a schematic view of a screw pump 1 according to the invention in a further embodiment.
  • the guide rail 28 is formed in several parts. It is composed of several, at least two, successively arranged and detachable parts 28 ', 28 "together. In tight space between the motor and the housing 2 thus protruding on the drive side part 28" of the guide rail 28 can be removed.
  • the guide rail 28 is thus not an insertion of the unit 15 into the housing 2 in the way.
  • the individual parts 28 ', 28 "of the guide rail 28 are non-positively and / or positively, ideally connected to each other by means of a screw 32. In this way, the parts 28', 28" quickly assemble and disassemble.
  • FIG. 7 shows a schematic view of an inventive transmission-side rail guide assembly 18 'in one embodiment.
  • the groove 36 extends in the longitudinal direction of the guide rails 20', 20". Ideally, the groove 36 extends over the entire longitudinal extent of the guide rails 20 ', 20 ".
  • the support member 26 has roller-shaped body 34, preferably rollers on.
  • the rollers 34 are arranged on the support member 26 so that they can each come into contact with a guide rail 20 ', 20 "., By the use of rollers 34, a low-friction displacement of the unit 15 is made possible of the support element 26 and can thus along the two mutually parallel rails 20 ', 20 ", in particular in the grooves 36, roll.
  • the support element 26 has at least one adjusting means 38 ', 38 ", in particular an adjusting screw.
  • the adjusting means 38', 38" By means of the adjusting means 38', 38", the unit 15 can be aligned both in the vertical and in the horizontal direction.
  • FIG. 8 shows a schematic view of an inventive drive-side rail guide assembly 18 "in one embodiment.
  • the support 30 has an opening 44, through which the guide rail 28 is feasible Ideally, the cross section of the opening 44 corresponds exactly to the outer dimension of the guide rail 28.
  • the breakthrough The opening 30 may have an adjusting element 40 which can limit the part of the opening 44 receiving the guide rail 28 in different ways, and thus the size of the opening 44 to the dimensions of the guide rail As a result, the support 30 can be used for guide rails 28 of different sizes.
  • the support 30 still has adjusting screws 42 ', 42 "in order to be able to align the unit 15 in both vertical and horizontal directions.

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  • Engineering & Computer Science (AREA)
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  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Description

Die Erfindung betrifft eine Schraubenspindelpumpe, mit einem Gehäuse, das einen Förderraum umgibt, zwei Spindeln, nämlich einer Antriebsspindel und einer gegenläufigen Laufspindel, einem Gehäuseeinsatz, der in dem Gehäuse angeordnet ist und in dem die Spindeln aufgenommen sind, wenigstens einem an den Gehäuseeinsatz angebundenen Lagerelement, an dem Lager der Spindeln angeordnet sind, und mit wenigstens einem eine Gehäuseöffnung verschließenden Gehäusedeckel und mit einer Führungsschienenanordnung.The invention relates to a screw pump, comprising a housing, which surrounds a delivery chamber, two spindles, namely a drive spindle and an opposite running spindle, a housing insert, which is arranged in the housing and in which the spindles are accommodated, at least one bearing element connected to the housing insert on which bearings of the spindles are arranged, and with at least one housing cover closing a housing cover and with a guide rail arrangement.

Derartige Schraubenspindelpumpen sind in verschiedenen Ausgestaltungen aus dem Stand der Technik bekannt. Sie werden zur Förderung von Fluiden und Mehrphasengemischen unterschiedlichster Art verwendet. Die Antriebsspindel und die Laufspindel weisen parallele Profilpakete auf, die miteinander berührungslos kämmen, wobei die Profilpakete gemeinsam mit dem Gehäuseeinsatz Verdrängerräume bilden, die bei gegenläufiger Rotation der Spindeln das Fluid axial von einer Saugseite zu einer Druckseite befördern. Die Laufspindel ist mit der Antriebsspindel über ein Zahnradgetriebe antriebsmäßig verbunden, wodurch die kämmende Bewegung der Profilpakete der beiden Spindeln realisiert wird. Das Getriebe befindet sich dabei meist außerhalb des Förderraums. Die Lager der Spindeln sind üblicherweise an Lagerelementen oder Lagerdeckeln angeordnet, die an gegenüberliegenden Stirnseiten von außen mit dem Gehäuse verbunden, d.h. meist verschraubt sind. Der das Gehäuse nach außen abschließende Gehäusedeckel ist bei den bekannten Schraubenspindelpumpen über den Lagerdeckel mit dem Gehäuse verbunden, d.h. dass zum Beispiel am Gehäuse ein stirnseitige Flansch ausgebildet ist, über den sowohl der Lagerdeckel als auch der Gehäusedeckel mittels Schraubbolzen am Gehäuse befestigt werden. Dabei wird der Lagerdeckel zwischen dem Flansch des Gehäuses und dem Gehäusedeckel fixiert.Such screw pumps are known in various configurations from the prior art. They are used to convey fluids and multiphase mixtures of various kinds. The drive spindle and the spindle have parallel profile packages which mesh with each other without contact, wherein the profile packages together with the housing insert form Verdrängerräume that convey the fluid axially from a suction side to a pressure side with opposite rotation of the spindles. The spindle is drivingly connected to the drive spindle via a gear transmission, whereby the meshing movement of the profile packs of the two spindles is realized. The gearbox is usually outside the pumping room. The bearings of the spindles are usually arranged on bearing elements or bearing caps, which are connected at opposite end faces from the outside to the housing, that is usually bolted. The housing outwardly final housing cover is connected in the known screw pumps via the bearing cap to the housing, that is, for example, on the housing an end-side flange is formed, via which both the bearing cap and the housing cover means Bolt be attached to the housing. In this case, the bearing cap is fixed between the flange of the housing and the housing cover.

Bei Schraubenspindelpumpen müssen die Spindeln zu Wartungs- und Revisionszwecken aus dem Gehäuse entnehmbar sein. Die bekannten Schraubenspindelpumpen haben dabei den Nachteil, dass jeweils die vollständige Pumpe, d.h. einschließlich des Gehäuses, demontiert werden muss. Die Ein- und Auslässe der Pumpe müssen von den angeschlossenen Fluidleitungen getrennt werden. Die Gehäusedeckel werden entfernt. Das gesamte, bis zu mehrere Tonnen schwere Pumpengehäuse wird um 90° gedreht, so dass schließlich, unter Verwendung eines geeigneten Hubzeuges, die Spindeln in vertikaler Richtung aus dem Gehäuse herausgehoben werden können.For screw pumps, the spindles must be removed from the housing for maintenance and inspection purposes. The known screw pumps have the disadvantage that in each case the complete pump, i. including the housing, must be dismantled. The inlets and outlets of the pump must be disconnected from the connected fluid lines. The housing covers are removed. The entire, up to several tons pump housing is rotated by 90 °, so that finally, using a suitable Hubzeuges, the spindles in the vertical direction can be lifted out of the housing.

Aus der DE 813 341 C , der EP 0 216 406 A1 und der US 2 924 181 A sind Schraubenspindelpumpen bekannt. Die US 2 581 451 A offenbart eine Mischungspumpe. In FR 2 174 684 A1 und WO 2007 / 020345 A2 sind Extruder mit Extrusionsschnecken gezeigt.From the DE 813 341 C , of the EP 0 216 406 A1 and the US 2,924,181 A Screw pumps are known. The US Pat. No. 2,581,451 discloses a mixing pump. In FR 2 174 684 A1 and WO 2007/020345 A2 extruders with extrusion screws are shown.

Die GB 541 601 A offenbart eine Einheit, die aus dem Lagerelement, dem Gehäuseeinsatz und den darin aufgenommenen Spindeln gebildet ist. Diese Einheit kann nach Entfernen des Gehäusedeckels durch die Gehäuseöffnung aus dem Gehäuse entnommen werden. Nachteilig an dieser Ausgestaltung ist, dass zur Entnahme der Einheit ein geeignetes Hubzeug erforderlich ist und die Entnahme aufwendig ist.The GB 541 601 A discloses a unit formed of the bearing member, the housing insert and the spindles received therein. This unit can be removed after removal of the housing cover through the housing opening from the housing. A disadvantage of this embodiment is that for removing the unit, a suitable Hubzeug is required and the removal is expensive.

Vor diesem Hintergrund ist es Aufgabe der Erfindung, eine Schraubenspindelpumpe bereitzustellen, an der Wartungs- und Revisionsarbeiten einfacher und schneller und somit auch kostengünstiger durchgeführt werden können.Against this background, it is an object of the invention to provide a screw pump, can be performed on the maintenance and inspection work easier and faster and thus more cost-effective.

Diese Aufgabe löst die Erfindung ausgehend von einer Schraubenspindelpumpe der eingangs genannten Art dadurch, dass wenigstens eine Führungsschienenanordnung an der Schraubenspindelpumpe anbringbar und abnehmbar angeordnet ist, wobei die Führungsschienenanordnung wenigstens eine sich in Längsrichtung der Schraubenspindelpumpe erstreckende Führungsschiene aufweist, an der die Einheit zur Entnahme in dem Gehäuse in axialer Richtung geführt ist. Vorteilhafte Ausgestaltungen sind jeweils Gegenstand der abhängigen Ansprüche. Es ist darauf hinzuweisen, dass die in den Ansprüchen einzeln aufgeführten Merkmale auch in beliebiger und technologisch sinnvoller Weise miteinander kombiniert werden können und somit weitere Ausgestaltungen der Erfindung aufzeigen.This object is achieved by the invention starting from a screw pump of the type mentioned above in that at least one guide rail arrangement is arranged attachable and detachable on the screw pump, wherein the guide rail assembly at least a extending in the longitudinal direction of the screw pump guide rail, on which the unit for removal in the housing is guided in the axial direction. Advantageous embodiments are the subject of the dependent claims. It should be noted that the features listed individually in the claims can also be combined with one another in any desired and technologically sensible manner and thus show further embodiments of the invention.

Der Kerngedanke der Erfindung besteht darin, den Gehäuseeinsatz mit den darin aufgenommenen Spindeln und den Lagerelementen zu einer Einheit zusammenzufassen, die als Ganzes aus dem Gehäuse der Pumpe für Wartungs- oder Revisionsarbeiten entnommen werden kann. Hierzu muss nur der Gehäusedeckel entfernt werden. Dieser gibt die Gehäuseöffnung frei, durch die die Einheit aus Lagerelement, Gehäuseeinsatz und Spindeln ohne weitere Maßnahmen entnommen wird. Insbesondere entfällt bei der erfindungsgemäßen Schraubenspindelpumpe das Erfordernis, die Pumpe insgesamt zu demontieren, d.h. einschließlich des Gehäuses. Die erfindungsgemäße Schraubenspindelpumpe ermöglicht es, mit anderen Worten, das Gehäuse "im Feld" zu belassen. Die Verbindungen zu den an die Pumpe angeschlossenen Fluidleitungen können bestehen bleiben. Es wird lediglich die Einheit aus Lagerelement, damit vorzugsweise verbundenem Gehäuseeinsatz und Spindeln aus dem Gehäuse entnommen. Die erforderlichen Arbeiten werden daran (ggf. nach separat durchzuführender Demontage der Einheit) durchgeführt. Danach wird die Einheit wieder in das Gehäuse eingesetzt, und schließlich wird das Gehäuse mittels des Gehäusedeckels wieder verschlossen.The core idea of the invention is to combine the housing insert with the spindles accommodated therein and the bearing elements into a unit that can be removed as a whole from the housing of the pump for maintenance or inspection work. For this purpose, only the housing cover must be removed. This releases the housing opening, through which the unit of bearing element, housing insert and spindles is removed without further measures. In particular, in the case of the screw pump according to the invention, the requirement to disassemble the pump as a whole is eliminated. including the case. In other words, the screw pump according to the invention makes it possible to leave the housing "in the field". The connections to the fluid lines connected to the pump can be maintained. It is only the unit of bearing element, thus preferably connected housing insert and spindles removed from the housing. The required work will be carried out on it (if necessary after dismantling the unit separately). Thereafter, the unit is inserted back into the housing, and finally the housing is closed again by means of the housing cover.

Damit können Wartungs- und Revisionsarbeiten an der erfindungsgemäßen Schraubenspindelpumpe wesentlich einfacher und kostengünstiger durchgeführt werden als an den aus dem Stand der Technik bekannten Pumpen.This maintenance and inspection work on the screw pump according to the invention can be performed much easier and cheaper than the known from the prior art pumps.

Bei einer bevorzugten Ausgestaltung der Erfindung hält der Gehäusedeckel die Einheit in dem Gehäuse in ihrer axialen Position. Das bedeutet, dass, wie zuvor ausgeführt, nur der Gehäusedeckel abgenommen werden muss, um danach die Einheit aus Lagerelement, Gehäuseeinsatz und Spindeln aus dem Gehäuse zu entnehmen, ohne dass weitere Arbeitsschritte erforderlich sind.In a preferred embodiment of the invention, the housing cover holds the unit in the housing in its axial position. This means that, as stated above, only the housing cover must be removed in order to remove the unit consisting of bearing element, housing insert and spindles from the housing, without further steps are required.

Bei einer weiter bevorzugten Ausgestaltung ist das Lagerelement als Lagerdeckel ausgebildet, dessen Außendurchmesser gleich dem Innendurchmesser der Gehäuseöffnung ist. Dabei schließt der Lagerdeckel vorzugsweise mit dem Rand der Gehäuseöffnung in axialer Richtung bündig ab. Bei dieser Ausgestaltung ist der Gehäusedeckel direkt mit dem Gehäuse verbunden, beispielsweise durch Verschrauben. Der Gehäusedeckel liegt dabei an dem bündig mit dem Rand der Gehäuseöffnung abschließenden Lagerdeckel flächig an, so dass der an der Stirnseite der Einheit angeordnete Lagerdeckel und damit die Einheit aus Lagerdeckel, Gehäuseeinsatz und Spindeln insgesamt in axialer Richtung fixiert ist.In a further preferred embodiment, the bearing element is designed as a bearing cap whose outer diameter is equal to the inner diameter of the housing opening. In this case, the bearing cap preferably ends flush with the edge of the housing opening in the axial direction. In this embodiment, the housing cover is connected directly to the housing, for example by screwing. The housing cover rests flat against the bearing cover which terminates flush with the edge of the housing opening, so that the bearing cover arranged on the end face of the unit and thus the unit consisting of bearing cap, housing insert and spindles is fixed overall in the axial direction.

Weiter bevorzugt ist bei der erfindungsgemäßen Schraubenspindelpumpe vorgesehen, dass am Gehäuse und/oder an der Einheit Führungselemente angeordnet sind, an denen die Einheit in dem Gehäuse in axialer Richtung geführt ist. Die Führung der Einheit aus Lagerelement, Gehäuseeinsatz und Spindeln in dem Gehäuse erleichtert das Entnehmen und Wiedereinsetzen der Einheit durch die Gehäuseöffnung. Die Führungselemente stellen sicher, dass das Gehäuse relativ zu der Einheit korrekt ausgerichtet ist. Die Führung kann weiterhin mit Vorteil so ausgestaltet sein, dass die Einheit mit vergleichsweise geringem Widerstand und damit geringem Kraftaufwand in axialer Richtung aus dem Gehäuse heraus bzw. in dieses hinein gleiten kann.Further preferably, it is provided in the screw pump according to the invention that guide elements are arranged on the housing and / or on the unit, on which the unit is guided in the housing in the axial direction. The guidance of the unit consisting of bearing element, housing insert and spindles in the housing facilitates the removal and reinserting of the unit through the housing opening. The guide elements ensure that the housing is correctly aligned relative to the unit. The guide can furthermore advantageously be configured such that the unit can slide out of the housing or into it in the axial direction with comparatively little resistance and thus little effort.

Es ist wenigstens eine abnehmbare Führungsschienenanordnung vorgesehen, die wenigstens eine sich in Längsrichtung der Schraubenspindelpumpe erstreckende Führungsschiene aufweist und an der die Einheit in dem Gehäuse in axialer Richtung geführt ist. Hierdurch kann die Einheit schnell und einfach in das Gehäuse ein- bzw. herausgeführt werden. Durch die Führungsschienenanordnung wird die Einheit insbesondere exakt ausgerichtet und kann so ohne ein Verklemmen ins Gehäuse eingesetzt werden. Wartungs- und Revisionsarbeiten an der erfindungsgemäßen Schraubenspindelpumpe lassen sich so wesentlich einfacher und kostengünstiger durchführen als an den aus dem Stand der Technik bekannten Pumpen.At least one detachable guide rail arrangement is provided which has at least one guide rail extending in the longitudinal direction of the screw pump and on which the unit in the housing is guided in the axial direction. This allows the unit to be quickly and easily inserted or removed from the housing. By the guide rail assembly, the unit is particularly precisely aligned and can be used without jamming into the housing. Maintenance and inspection work on the screw pump according to the invention can be carried out so much easier and cheaper than the known from the prior art pumps.

Der Vorteil der abnehmbaren Führungsschienenanordnung ist, dass hierdurch zum einen das Einführen der Einheit vereinfacht werden kann. Da die Führungsschienenanordnung abnehmbar ist, behindert sie aber zum anderen den Betrieb der Schraubenspindelpumpe, beispielsweise durch im Weg stehende Elemente, nicht. Die abnehmbare Führungsschienenanordnung ist bevorzugt kraft- und/oder formschlüssig an der Schraubenspindelpumpe anordbar. Hierdurch lässt sich die Führungsschienenanordnung schnell und einfach montieren bzw. demontieren. Hierzu eignen sich idealerweise Schraub- oder Steckverbindungen.The advantage of the removable guide rail arrangement is that on the one hand the insertion of the unit can be simplified on the one hand. Because the Guide rail assembly is removable, but on the other hand impedes the operation of the screw pump, for example, by standing in the way, not. The removable guide rail assembly is preferably non-positively and / or positively arranged on the screw pump. As a result, the guide rail assembly can be quickly and easily assemble or disassemble. Ideally screwed or plug connections are suitable for this purpose.

Die erfindungsgemäße Führungsschienenanordnung kann sowohl getriebeseitig wie auch antriebsseitig an der Schraubenspindelpumpe angeordnet sein. Erfindungsgemäß wird unter antriebsseitig die Seite verstanden, an der sich ein Motor befindet, der die Antriebsspindel antreibt. An der Getriebeseite befindet sich ein Getriebe, bevorzugt ein Zahnradgetriebe, das die Laufspindel mit der Antriebsspindel verbindet, wodurch die kämmende Bewegung der Profilpakete der beiden Spindeln realisiert wird. Idealerweise befindet sich sowohl auf der Antriebsseite wie auch auf der Getriebeseite eine Führungsschienenanordnung.The guide rail arrangement according to the invention can be arranged both on the transmission side and on the drive side on the screw pump. According to the invention is understood on the drive side, the side at which a motor is located, which drives the drive spindle. On the transmission side is a gear, preferably a gear transmission, which connects the spindle to the drive spindle, whereby the meshing movement of the profile packages of the two spindles is realized. Ideally, there is a guide rail arrangement both on the drive side and on the transmission side.

Die Führungsschienenanordnung kann wenigstens eine Stütze zum Halten bzw. Führen der Führungsschiene aufweisen. Die Stützen ermöglichen es unter anderem, dass die Führungsschienen parallel zum Boden bzw. zu einer Bodenplatte, auf der die Spindelschraubenpumpe steht, ausgerichtet werden können.The guide rail assembly may include at least one post for supporting the guide rail. Among other things, the supports make it possible to align the guide rails parallel to the floor or to a base plate on which the spindle screw pump stands.

Die Stütze kann als Teleskopauszug bzw. Teleskoprohre, ausgebildet sein. Hierbei ist sie durch das Auseinanderziehen von Schienen, Rohren oder Stangen verlängerbar. Die Stütze ist somit teleskopierbar. Bevorzugt verläuft die Stütze senkrecht zum Boden. Um das Gewicht besser aufnehmen und verteilen zu können, kann sie eine Bodenplatte aufweisen. Die Stütze kann aber auch so ausgebildet sein, dass sie einen Durchbruch aufweist, durch den eine Führungsschiene durchführbar ist. Idealerweise entspricht der Querschnitt des Durchbruchs genau dem Außenmaß der Führungsschiene. Vorteilhafterweise ist der Durchbruch vieleckig, insbesondere viereckig, ausgebildet. Der Durchbruch kann variabel in der Größe ausgebildet sein. Hierzu kann die Stütze ein Verstellelement aufweisen, das unterschiedlich weit in den Durchbruch hereinragen kann bzw. das den die Führungsschiene aufnehmenden Teil des Durchbruchs verschiedenartig begrenzen kann und dadurch die Größe des Durchbruchs an die Ausmaße der Führungsschiene anpasst. Dies hat zur Folge, dass die Stütze für unterschiedlich große Führungsschienen verwendet werden kann.The support can be designed as a telescopic extension or telescopic tubes. It can be extended by pulling rails, tubes or rods apart. The support is thus telescopic. Preferably, the support is perpendicular to the ground. To better absorb and distribute the weight, it can have a bottom plate. However, the support can also be designed so that it has an opening through which a guide rail can be performed. Ideally, the cross section of the opening corresponds exactly to the outer dimension of the guide rail. Advantageously, the opening is polygonal, in particular quadrangular, formed. The breakthrough may be variable in size. For this purpose, the support may have an adjusting element, which may protrude differently far into the opening or the part of the guide rail receiving the Breakthrough various limits and thereby adapts the size of the breakthrough to the dimensions of the guide rail. This has the consequence that the support for different sized guide rails can be used.

Vorteilhafterweise weist die Stütze ein Verstellmittel zur Ausrichtung der Einheit und/oder der Führungsschiene auf. Idealerweise handelt es sich hierbei um eine Verstellschraube. Durch das Verstellmittel lässt sich die Führungsschiene besonders genau ausrichten. Hierdurch können die Achsen des Pumpengehäuses und der Einheit einfach in eine Flucht gebracht werden.Advantageously, the support has an adjusting means for aligning the unit and / or the guide rail. Ideally, this is an adjusting screw. The adjusting means allows the guide rail to be aligned particularly accurately. As a result, the axes of the pump housing and the unit can be easily aligned.

Die Stütze kann sowohl an dem Gehäuse wie auch an der Führungsschiene angeordnet werden. Die Ausgestaltung der Stütze hängt insbesondere von der zu stützenden Führungsschiene ab.The support can be arranged both on the housing as well as on the guide rail. The design of the support depends in particular on the guide rail to be supported.

Bevorzugt weist die Führungsschienenanordnung zwei Führungsschienen auf, die insbesondere parallel zueinander verlaufen. Durch die zwei parallel verlaufenden Schienen kann sichergestellt werden, dass die Einheit genau parallel zum Boden ausgerichtet ist und richtig orientiert in das Gehäuse eingeführt werden kann. Die Führungsschienen sind an dem Gehäuse anordbar. Die Führungsschienen können mittels einer Querstrebe miteinander verbunden sein. Hierdurch wird die Führungsschienenanordnung mechanisch verstärkt, wodurch sie das hohe Gewicht der Einheit sicher aufnehmen kann, ohne dabei zu brechen.The guide rail arrangement preferably has two guide rails, which run in particular parallel to one another. The two parallel rails ensure that the unit is aligned exactly parallel to the ground and that it can be inserted properly oriented into the housing. The guide rails can be arranged on the housing. The guide rails can be connected to each other by means of a transverse strut. As a result, the guide rail assembly is mechanically reinforced, whereby they can safely absorb the heavy weight of the unit, without breaking.

Eine Führungsschienenanordnung mit zwei Führungsschienen wird erfindungsgemäß bevorzugt getriebeseitig an der Schraubenspindelpumpe angeordnet.A guide rail arrangement with two guide rails is preferably arranged on the screw side of the pump spindle according to the invention.

Vorteilhafterweise weisen die Führungsschienen an dem dem Gehäuse gegenüberliegenden Ende jeweils eine Stütze auf, wodurch sie parallel zum Boden ausgerichtet werden können. Die Stützen sind bevorzugt teleskopierbar. Die Stützen können auch mit der Querstrebe verbunden sein.Advantageously, the guide rails each have a support at the opposite end of the housing, whereby they can be aligned parallel to the ground. The supports are preferably telescopic. The supports can also be connected to the crossbar.

Die Führungsschiene kann bevorzugt eine Nut aufweisen. Durch die Nut wird eine besonders sichere Führung des zu führenden Elements sichergestellt. Die Nut erstreckt sich dabei bevorzugt in Längsrichtung der Führungsschiene. Idealerweise erstreckt sich die Nut über die gesamte Längsausdehnung der Führungsschiene.The guide rail may preferably have a groove. Through the groove a particularly secure guidance of the leading element is ensured. The groove preferably extends in the longitudinal direction of the guide rail. Ideally, the groove extends over the entire longitudinal extent of the guide rail.

An dem Gehäuseeinsatz bzw. an der Einheit kann ein Stützelement angeordnet sein. Das Stützelement verläuft insbesondere horizontal und kann wenigstens teilweise auf den Führungsschienen aufliegen. Durch das Stützelement kann die Einheit von den Schienen aufgenommen und entlang der Führungsschienen in das Gehäuse eingebracht werden. Das Stützelement ist bevorzugt an einer Grundfläche des Gehäuseeinsatzes angeordnet.On the housing insert or on the unit may be arranged a support element. The support member extends in particular horizontally and can at least partially rest on the guide rails. By the support member, the unit can be picked up by the rails and placed along the guide rails in the housing. The support element is preferably arranged on a base surface of the housing insert.

Das Stützelement kann rollenförmige Körper aufweisen. Die rollenförmigen Körper sind bevorzugt so an dem Stützelement angeordnet, dass sie in Kontakt mit einer Führungsschiene kommen können. Durch die Verwendung von Rollen wird ein reibungsarmes Verschieben der Einheit ermöglicht. Idealerweise sind die Rollen an den Enden des Stützelements angeordnet und können so entlang der zwei parallel zueinander verlaufenden Schienen, insbesondere in dessen Nuten, abrollen.The support element may have roll-shaped body. The roller-shaped bodies are preferably arranged on the support element such that they can come into contact with a guide rail. The use of rollers enables a low-friction movement of the unit. Ideally, the rollers are arranged at the ends of the support element and can thus roll along the two mutually parallel rails, in particular in its grooves.

Das Stützelement kann wenigstens ein Verstellmittel, insbesondere eine Verstellschraube, aufweisen. Durch das Verstellmittel lässt sich die Einheit sowohl in vertikaler wie auch horizontaler Richtung ausrichten.The support element may have at least one adjusting means, in particular an adjusting screw. By means of the adjustment means, the unit can be aligned both in the vertical and horizontal direction.

In einer Ausführungsform kann die Führungsschiene an dem Gehäuseeinsatz bzw. an der Einheit angeordnet sein. Idealerweise ist die Führungsschiene hierbei dann antriebsseitig an der Schraubenspindelpumpe angeordnet. Eine die Führungsschiene führende Stütze ist bevorzugt antriebsseitig an dem Gehäuse angeordnet. Um die Führungsschiene ausrichten zu können, kann die Stütze wenigstens ein Verstellmittel aufweisen. Bevorzugt weist die Stütze einen Durchbruch auf, durch den die Führungsschiene durchführbar ist.In one embodiment, the guide rail can be arranged on the housing insert or on the unit. Ideally, the guide rail is then arranged on the drive side of the screw pump. A guide rail leading the support is preferably arranged on the drive side of the housing. In order to align the guide rail, the support may have at least one adjustment. Preferably, the support on an opening through which the guide rail is feasible.

Idealerweise ist die Führungsschiene mehrteilig ausgebildet. Sie setzt sich aus mehreren, mindestens zwei, hintereinander angeordneten und voneinander lösbaren Teilen zusammen. Bei engen Platzverhältnissen zwischen Motor und dem Gehäuse kann somit der auf der Antriebsseite herausragende Teil der Führungsschiene abmontiert werden. Die Führungsschiene steht somit einem Einschieben der Einheit in das Gehäuse nicht im Wege. Die einzelnen Teile der Führungsschiene lassen sich bevorzugt kraft- und/oder formschlüssig miteinander verbinden. Als besonders geeignet hat sich eine Schraubenverbindung gezeigt.Ideally, the guide rail is designed in several parts. It consists of several, at least two, arranged one behind the other and detachable parts together. In tight space between the motor and the housing can thus be removed from the outstanding on the drive side of the guide rail. The guide rail is thus not an insertion of the unit into the housing in the way. The individual parts of the guide rail can be preferably non-positively and / or positively connect with each other. A screw connection has proven particularly suitable.

Nachfolgend wird die Montage der Führungsschienenanordnung in einer Ausgestaltung beschrieben:
Die getriebeseitige Führungsschiene und die Stütze für die antriebsseitige Führungsschiene werden an das Pumpengehäuse montiert. Die Stützen für die getriebeseitigen Führungsschienen werden an den Führungsschienen montiert und so ausgerichtet, dass die Führungsschienen parallel zur Grundplatte verlaufen. Anschließend wird die getriebeseitige Gehäuseeinsatz-Stütze und die antriebsseitige Führungsschiene an der Einheit befestigt. Die Einheit wird so in dem Pumpengehäuse positioniert, dass die antriebsseitige Führungsschiene von der antriebsseitigen Stütze aufgenommen werden kann. Ferner wird die Einheit mit der getriebeseitigen Gehäuseeinsatz-Stütze auf die getriebeseitigen Führungsschienen gelegt. Hierbei sollten die Rollen der Gehäuseeinsatz-Stütze so in den Nuten der Führungsschienen positioniert werden, dass sie reibungsarm abrollen können. Um die Achsen des Pumpengehäuses und der Einheit in eine Flucht zu bekommen, wird die Einheit mit Hilfe von Ausrichtmitteln an der getriebeseitigen Gehäuseeinsatz-Stütze und der Stütze für die antriebsseitige Führungsschiene in horizontaler und vertikaler Lage ausgerichtet. Nun kann die Einheit in das Pumpengehäuse hineingeschoben werden. Ist zwischen der Pumpe und dem Motor nur wenig Platz, dann kann bei einer mehrteilig ausgebildeten antriebsseitigen Führungsschiene der an der Antriebsseite überstehende Teil demontiert werden. Nachdem die Einheit komplett im Pumpengehäuse angeordnet ist, können die Führungsschienenanordnungen wieder demontiert werden. Nach Verschließen des Gehäuses mit einem Deckel ist die Schraubenspindelpumpe nun betriebsbereit.
The following describes the assembly of the guide rail arrangement in one embodiment:
The transmission-side guide rail and the support for the drive-side guide rail are mounted on the pump housing. The supports for the Gear-side guide rails are mounted on the guide rails and aligned so that the guide rails are parallel to the base plate. Subsequently, the transmission-side housing insert support and the drive-side guide rail is attached to the unit. The unit is positioned in the pump housing so that the drive-side guide rail can be received by the drive-side support. Furthermore, the unit with the transmission-side housing insert support is placed on the transmission-side guide rails. In this case, the rollers of the housing insert support should be positioned in the grooves of the guide rails so that they can roll friction. In order to align the axes of the pump housing and the unit, the unit is aligned by means of alignment means on the transmission-side housing insert support and the support for the drive-side guide rail in a horizontal and vertical position. Now the unit can be pushed into the pump housing. If there is only little space between the pump and the motor, then the part protruding on the drive side can be dismantled in the case of a multi-part drive-side guide rail. After the unit is completely arranged in the pump housing, the guide rail assemblies can be disassembled again. After closing the housing with a cover, the screw pump is now ready for operation.

Bei Ausbau der Einheit aus dem Pumpengehäuse erfolgt die oben beschriebene Montage in umgekehrter Reihenfolge.When removing the unit from the pump housing, the assembly described above takes place in the reverse order.

Des Weiteren ist bei der erfindungsgemäßen Schraubenspindelpumpe bevorzugt eine Verdrehsicherung vorgesehen, die ein axiales Verdrehen der Einheit aus Lagerelement, Gehäuseeinsatz und Spindeln verhindert. Die Einheit wird bevorzugt, wie oben erläutert, ohne weitere Befestigungselemente, das heißt nur durch den bzw. die Gehäusedeckel in ihrer axialen Position gehalten. Erfindungsgemäß kann eine Verdrehsicherung vorgesehen sein, beispielsweise in Form von Formschlusselementen, die am Gehäusedeckel ausgebildet sind und in die Einheit (beispielsweise in den Lagerdeckel) eingreifen, um auf einfache und sichere Weise ein ungewolltes Verdrehen oder eine Falschmontage der Pumpe nach der Durchführung der Wartungs- oder Revisionsarbeiten zu verhindern.Furthermore, an anti-twist device is preferably provided in the screw pump according to the invention, which prevents axial rotation of the unit consisting of bearing element, housing insert and spindles. The unit is preferably, as explained above, without further fasteners, that is held only by the or the housing cover in its axial position. According to the invention, an anti-rotation can be provided, for example in the form of positive-locking elements which are formed on the housing cover and in the unit (for example, in the bearing cap) intervene to a simple and safe way, an unwanted twisting or Incorrect installation of the pump after carrying out the maintenance or revision work to prevent.

Bei einer weiter bevorzugten Ausgestaltung der erfindungsgemäßen Schraubenspindelpumpe sind in dem Lagerelement Schmiermittelkanäle ausgebildet, die zur Schmierung der Lager der Spindeln dienen. Dabei münden die Schmiermittelkanäle in wenigstens eine stirnseitige Schmiermittelöffnung des Lagerelementes. Es ist bei Schraubenspindelpumpen üblich, die Lager mit Zufluss- und Abflusskanälen für Schmiermittel zu verbinden, über die kontinuierlich Schmiermittel zu- bzw. abgeführt werden kann. Hierzu wird die Pumpe mit einem externen Schmiermittelversorgungssystem verbunden. Gemäß der Erfindung ist bevorzugt vorgesehen, dass die Zuführung und die Abführung des Schmiermittels über die Stirnseite des Lagerelementes erfolgen.In a further preferred embodiment of the screw pump according to the invention lubricant channels are formed in the bearing element, which serve to lubricate the bearings of the spindles. In this case, the lubricant channels open into at least one end-side lubricant opening of the bearing element. It is usual in screw pumps to connect the bearings with inlet and outlet channels for lubricants via which lubricant can be continuously supplied or removed. For this purpose, the pump is connected to an external lubricant supply system. According to the invention, it is preferably provided that the supply and the discharge of the lubricant take place via the end face of the bearing element.

Bevorzugt können dann in dem Gehäusedeckel korrespondierende Schmiermittelkanäle vorgesehen sein, die von der Vorderseite des Gehäusedeckels zu dessen Rückseite hin durchgehen, wobei eine rückseitige Öffnung des Schmiermittelkanals des Gehäusedeckels bei geschlossenem Gehäusedeckel mit der stirnseitigen Schmiermittelöffnung des Lagerelementes zur Deckung kommt. Die Erfindung ermöglicht somit eine zuverlässige Schmierung der Spindeln in der üblichen Art und Weise über entsprechende in dem Lagerelement ausgebildete Schmiermittelkanäle. Die Zu- und Abfuhr des Schmiermittels erfolgt dabei bevorzugt über den Gehäusedeckel. Zur Trennung bzw. zur Wiederherstellung der Schmiermittelzu- und -abfuhr beim Entnehmen der Einheit aus dem Gehäuse müssen die Schmiermittelkanäle nicht eigens getrennt bzw. wieder verbunden werden. Beim Öffnen des Gehäusedeckels wird die Schmiermittelverbindung automatisch ohne weitere Arbeitsschritte unterbrochen. Beim Verschließen des Gehäusedeckels nach dem Wiedereinsetzen der Einheit wird die Schmiermittelverbindung wiederum automatisch ohne weitere Arbeitsschritte korrekt hergestellt.Preferably then corresponding lubricant channels may be provided in the housing cover, which pass from the front of the housing cover to the rear side, wherein a rear opening of the lubricant channel of the housing cover with closed housing cover with the frontal lubricant opening of the bearing element coincides. The invention thus enables a reliable lubrication of the spindles in the usual manner via corresponding formed in the bearing element lubricant channels. The supply and removal of the lubricant is preferably carried out via the housing cover. To separate or restore the lubricant supply and removal when removing the unit from the housing, the lubricant channels do not have to be separated or reconnected. When opening the housing cover, the lubricant connection is automatically interrupted without further work steps. When closing the housing cover after reinserting the unit, the lubricant connection is in turn automatically produced without further work steps.

Wie bei bekannten Schraubenspindelpumpen kann bei der erfindungsgemäßen Schraubenspindelpumpe an dem Gehäusedeckel ein Getriebegehäuse ausgebildet sein, das ein die Antriebsspindel mit der Laufspindel verbindendes Getriebe (z.B. Zahnradgetriebe) in sich aufnimmt und schützt.As with known screw pumps, in the screw pump according to the invention on the housing cover a transmission housing may be formed, which receives a drive spindle with the spindle connecting gear (eg gear transmission) in it and protects.

Die Erfindung sowie das technische Umfeld werden nachfolgend anhand der Figuren näher erläutert. Es ist darauf hinzuweisen, dass die Figuren eine besonders bevorzugte Ausführungsvariante der Erfindung zeigen. Die Erfindung ist jedoch nicht auf die gezeigte Ausführungsvariante beschränkt.The invention and the technical environment will be explained in more detail with reference to FIGS. It should be noted that the figures show a particularly preferred embodiment of the invention. However, the invention is not limited to the embodiment shown.

Es zeigen:

Figur 1
Draufsicht auf eine erfindungsgemäße Schraubenspindelpumpe;
Figur 2
Schraubenspindelpumpe gemäß Figur 1 mit demontierten vorder- und rückseitigen Gehäusedeckeln;
Figur 3
Schraubenspindelpumpe gemäß Figur 1 und 2 mit entnommener Einheit aus Lagerelementen, Gehäuseeinsatz und Spindeln;
Figur 4
erfindungsgemäße Schraubenspindelpumpe in geschnittener Seitenansicht.
Figur 5
schematische Ansicht auf eine erfindungsgemäße Schraubenspindelpumpe mit einer Schienenführungsanordnung in einer Ausgestaltung,
Figur 6
schematische Ansicht auf eine erfindungsgemäße Schraubenspindelpumpe mit einer Schienenführungsanordnung in einer weiteren Ausgestaltung,
Figur 7
schematische Ansicht auf eine erfindungsgemäße getriebeseitige Schienenführungsanordnung in einer Ausgestaltung,
Figur 8
schematische Ansicht auf eine erfindungsgemäße antriebsseitige Schienenführungsanordnung in einer Ausgestaltung.
Show it:
FIG. 1
Top view of a screw pump according to the invention;
FIG. 2
Screw pump according to FIG. 1 with disassembled front and rear housing covers;
FIG. 3
Screw pump according to FIGS. 1 and 2 with removed unit of bearing elements, housing insert and spindles;
FIG. 4
Screw pump according to the invention in a sectional side view.
FIG. 5
schematic view of a screw pump according to the invention with a rail guide assembly in an embodiment,
FIG. 6
schematic view of a screw pump according to the invention with a rail guide assembly in a further embodiment,
FIG. 7
schematic view of a transmission-side according to the invention Rail guiding arrangement in one embodiment,
FIG. 8
schematic view of an inventive drive-side rail guide assembly in one embodiment.

Die Figuren zeigen ein Ausführungsbeispiel einer insgesamt mit der Bezugsziffer 1 bezeichneten erfindungsgemäßen Schraubenspindelpumpe.The figures show an embodiment of a total designated by the reference numeral 1 screw pump according to the invention.

Diese weist ein Gehäuse 2 mit angeformtem Einlass 3 und Auslass 4 auf. Das Gehäuse 2 umgibt einen Förderraum 5 der Pumpe, in dem sich ein Gehäuseeinsatz 6 befindet. Der Gehäuseeinsatz 6 nimmt in sich eine Antriebsspindel 7 und eine gegenläufige Laufspindel 8 auf. In der Figur 4 sind zwei Profilpakete 7', 7" Strich der Antriebsspindel 7 schematisch angedeutet. Die Profilpakete der Antriebsspindel 7 und der Laufspindel 8 kämmen miteinander und bilden zusammen mit die Profilpakete mit geringem Spalt umschließenden Druckkammern 6' bzw. 6" des Gehäuseeinsatzes 6 Verdrängerräume, durch die ein zu förderndes Fluid axial von Einlasskammern 9, die mit dem Einlass 3 in Verbindung stehen, in eine Auslasskammer 10, die mit dem Auslass 4 in Verbindung steht, gefördert wird. Gegenüber der Innenwandung des Gehäuses 2 abgedichtete Trennwände 11 des Gehäuseeinsatzes 6 dichten die Einlasskammern 9 gegenüber der Auslasskammer 10 ab.This has a housing 2 with molded inlet 3 and outlet 4. The housing 2 surrounds a delivery chamber 5 of the pump, in which a housing insert 6 is located. The housing insert 6 accommodates a drive spindle 7 and an opposite running spindle 8. In the FIG. 4 two profile packages 7 ', 7 "are indicated schematically in the drive spindle 7. The profile packages of the drive spindle 7 and the running spindle 8 mesh with one another and together with the profile packs with small gap enclosing pressure chambers 6' and 6" of the housing insert 6 displacer spaces through which axially conveying a fluid to be conveyed from inlet chambers 9 communicating with the inlet 3 into an outlet chamber 10 communicating with the outlet 4. Compared with the inner wall of the housing 2 sealed partitions 11 of the housing insert 6 seal the inlet chambers 9 from the outlet chamber 10 from.

Lager 12 der Spindeln 7,8 sind an vorder- und rückseitigen Lagerelementen 13' bzw. 13" in Form von Lagerdeckeln ausgebildet. Bei den Lagern 12 handelt es sich um Wälzlager.Bearings 12 of the spindles 7, 8 are formed on front and rear bearing elements 13 'and 13 "in the form of bearing caps. The bearings 12 are antifriction bearings.

An der Vorderseite und an der Rückseite des Gehäuses 2 ist jeweils ein Gehäusedeckel 14', 14" angeordnet, der eine vorderseitige bzw. eine rückseitige Öffnung des Gehäuses 2 verschließt. Die Gehäusedeckel 14', 14" weisen, wie in den Figuren dargestellt, Verschraubungsbünde auf, über die die Gehäusedeckel 14', 14" mit dem Gehäuse 2 verschraubbar sind.A housing cover 14 ', 14 ", which closes a front or a rear opening of the housing 2, is respectively arranged on the front side and the rear side of the housing 2. The housing covers 14', 14" have screwed connection collars, as shown in the figures on, over which the housing cover 14 ', 14 "are screwed to the housing 2.

Erfindungsgemäß ist vorgesehen, dass die Lagerelemente 13', 13" mit dem Gehäuseeinsatz 6 und den darin aufgenommenen Spindeln 7, 8 eine Einheit bilden, die in der Figur 3 insgesamt mit der Bezugsziffer 15 bezeichnet ist. Die Einheit 15 ist, wie in Figur 3 gezeigt, durch die vordere Öffnung des Gehäuses 2 in Pfeilrichtung aus diesem entnehmbar, nachdem der Gehäusedeckel 14' entfernt wurde.According to the invention, it is provided that the bearing elements 13 ', 13 "form a unit with the housing insert 6 and the spindles 7, 8 accommodated therein, which in the FIG. 3 generally designated by the reference numeral 15. The unit 15 is, as in FIG. 3 shown by the front opening of the housing 2 in the direction of arrow removed from this after the housing cover 14 'has been removed.

In den Figuren 2 und 4 ist zu erkennen, dass die Gehäusedeckel 14', 14" die Einheit 15 aus Lagerelementen 13', 13", Gehäuseeinsatz 6 und Spindeln 7, 8 in ihrer axialen Position halten. Dabei ist der Außendurchmesser der als Lagerdeckel ausgebildeten Lagerelemente 13', 13" gleich dem Innendurchmesser der vorder- und rückseitigen Gehäuseöffnungen, wobei die Lagerelemente 13', 13" jeweils an der Stirnseite des Gehäuses 2 mit dem Rand der Gehäuseöffnung in axialer Richtung bündig abschließen, so dass die mit dem Gehäuse 2 verbundenen Gehäusedeckel 14", 14" flächig an den Lagerelementen 13', 13" anliegen und so die gesamte Einheit 15 in der in den Figuren 2 und 4 gezeigten axialen Position halten.In the Figures 2 and 4 It can be seen that the housing cover 14 ', 14 "keep the unit 15 of bearing elements 13', 13", housing insert 6 and spindles 7, 8 in their axial position. In this case, the outer diameter of the bearing cover designed as bearing elements 13 ', 13 "equal to the inner diameter of the front and rear housing openings, the bearing elements 13', 13" each flush on the end face of the housing 2 with the edge of the housing opening in the axial direction, so that the housing cover 14 connected to the housing 14 ", 14" flat against the bearing elements 13 ', 13 "and so the entire unit 15 in the in the Figures 2 and 4 hold shown axial position.

Wie die Figur 4 zeigt, sind in den Lagerelementen 13', 13" Schmiermittelkanäle 16' bzw. 16" ausgebildet, die zur Schmierung der Lager 12 dienen. Die Schmiermittelkanäle 16', 16" münden in stirnseitige Öffnungen der Lagerelemente 13' bzw. 13", wobei sich diese Öffnungen mit Öffnungen von in den Gehäusedeckeln 14', 14" ausgebildeten Schmiermittelkanälen 17', 17" decken, so dass über die Gehäusedeckel 14', 14" Schmiermittel zu- und abgeführt werden kann.As the FIG. 4 shows, in the bearing elements 13 ', 13 "lubricant channels 16' and 16" formed, which serve to lubricate the bearings 12. The lubricant channels 16 ', 16 "open into end openings of the bearing elements 13' and 13", wherein these openings with openings in the housing covers 14 ', 14 "formed lubricant channels 17', 17" cover, so that on the housing cover 14th ', 14 "lubricant can be added and removed.

An dem Gehäusedeckel 14' ist ein Getriebegehäuse ausgebildet, dass ein die Antriebsspindel 7 mit der Laufspindel 8 verbindendes Zahnradgetriebe (nicht dargestellt) aufnimmt.On the housing cover 14 ', a transmission housing is formed that receives a drive gear 7 with the spindle 8 connecting gear transmission (not shown).

Figur 5 zeigt eine schematische Ansicht auf eine erfindungsgemäße Schraubenspindelpumpe 1 in einer Ausgestaltung. Die Schraubenspindelpumpe 1 umfasst ein Gehäuse 2, das einen Förderraum umgibt, zwei Spindeln , eine Antriebsspindel 7 und eine gegenläufige Laufspindel 8, einen Gehäuseeinsatz 6, der in dem Gehäuse 2 angeordnet ist und in dem die Spindeln 7, 8 aufgenommen sind, und wenigstens ein an dem Gehäuseeinsatz 2 angebundenes Lagerelement 13, an dem Lager 12 der Spindeln 7, 8 angeordnet sind. Ferner weist die Schraubenspindelpumpe 1 wenigstens eine abnehmbare Führungsschien enanordnung 18', 18" auf, die wenigstens eine sichin Längsrichtung der Schraubenspindelpumpe 1 erstreckende Führungsschiene 20, 28 aufweist. In Figur 1 weist die Schraubenspindelpumpe 1 sowohl eine getriebeseitige 18' wie auch eine antriebsseitige Führungsschienenanordnung 18". FIG. 5 shows a schematic view of a screw pump 1 according to the invention in one embodiment. The screw pump 1 comprises a housing 2, which surrounds a delivery chamber, two spindles, a drive spindle 7 and an opposite running spindle 8, a housing insert 6, which is arranged in the housing 2 and in which the spindles 7, 8 are received, and at least one attached to the housing insert 2 bearing element 13, on the bearing 12 of the spindles 7, 8 are arranged. Furthermore, the screw pump 1 has at least one removable guide rail arrangement 18 ', 18 ", which has at least one guide rail 20, 28 extending in the longitudinal direction of the screw pump 1 FIG. 1 The screw pump 1 has both a transmission-side 18 'and a drive-side guide rail arrangement 18 ".

Die getriebeseitige Führungsschienenanordnung 18' weist zwei Führungsschienen 20', 20" auf, die parallel zueinander verlaufen. Durch die zwei parallel verlaufenden Schienen 20', 20" kann sichergestellt werden, dass die Einheit 15 genau parallel zum Boden ausgerichtet ist und richtig orientiert in das Gehäuse 2 eingeführt werden kann. Die Führungsschienen 20', 20" sind an dem Gehäuse 2 angeordnet. Die Führungsschienen 20', 20" sind mittels einer Querstrebe 24 miteinander verbunden. Hierdurch wird die Führungsschienenanordnung 18' mechanisch verstärkt, wodurch sie das hohe Gewicht der Einheit 15 sicher aufnehmen kann, ohne dabei zu brechen.The transmission-side guide rail assembly 18 'has two guide rails 20', 20 "parallel to one another. The two parallel rails 20 ', 20" can be used to ensure that the unit 15 is aligned exactly parallel to the ground and oriented correctly Housing 2 can be introduced. The guide rails 20 ', 20 "are arranged on the housing 2. The guide rails 20', 20" are connected to one another by means of a transverse strut 24. As a result, the guide rail assembly 18 'mechanically reinforced, whereby they can safely hold the high weight of the unit 15 without breaking.

Die getriebeseitigen Führungsschienen 20', 20" weisen an dem dem Gehäuse 2 gegenüberliegenden Ende jeweils eine Stütze 22 auf, wodurch sie parallel zum Boden ausgerichtet werden können. Die Stützen 22 verlaufen senkrecht zum Boden und sind bevorzugt teleskopierbar ausgebildet. Die Stützen 22 sind mit der Querstrebe 24 verbunden.The transmission-side guide rails 20 ', 20 "each have a support 22 at the end opposite the housing 2, whereby they can be aligned parallel to the floor .The supports 22 extend perpendicular to the floor and are preferably telescopically formed Cross strut 24 connected.

An dem Gehäuseeinsatz 6 bzw. an der Einheit 15 ist ein Stützelement 26 angeordnet. Das Stützelement 26 verläuft insbesondere horizontal und kann wenigstens teilweise auf den Führungsschienen 20', 20" aufliegen. Durch das Stützelement 26 kann die Einheit 15 von den Schienen 20', 20" aufgenommen und entlang der Führungsschienen 20', 20" in das Gehäuse 2 eingebracht werden. Das Stützelement 26 ist bevorzugt an einer Grundfläche des Gehäuseeinsatzes 6 angeordnet.On the housing insert 6 or on the unit 15, a support member 26 is arranged. The support element 26 extends in particular horizontally and can rest at least partially on the guide rails 20 ', 20 ".The support element 26 can receive the unit 15 from the rails 20', 20" and into the housing 2 along the guide rails 20 ', 20 " The support element 26 is preferably arranged on a base surface of the housing insert 6.

Ferner weist die Schraubenspindelpumpe 1 eine antriebsseitige Führungsschienenanordnung 18" auf. Die Führungsschienenanordnung 19" umfasst eine am Gehäuse 2 angeordnete Stütze 30 und eine an dem Gehäuseeinsatz 6 bzw. an der Einheit 15 angeordnete Führungsschiene 28 auf.Furthermore, the screw pump 1 has a drive-side guide rail arrangement 18 ". comprises a support 30 arranged on the housing 2 and a guide rail 28 arranged on the housing insert 6 or on the unit 15.

Figur 6 zeigt eine schematische Ansicht auf eine erfindungsgemäße Schraubenspindelpumpe 1 in einer weiteren Ausgestaltung. In dieser Ausführungsform ist die Führungsschiene 28 mehrteilig ausgebildet. Sie setzt sich aus mehreren, mindestens zwei, hintereinander angeordneten und von einander lösbaren Teilen 28', 28" zusammen. Bei engen Platzverhältnissen zwischen Motor und dem Gehäuse 2 kann somit der auf der Antriebsseite herausragende Teil 28" der Führungsschiene 28 abmontiert werden. Die Führungsschiene 28 steht somit einem Einschieben der Einheit 15 in das Gehäuse 2 nicht im Wege. Bevorzugt sind die einzelnen Teile 28', 28" der Führungsschiene 28 kraft-/ und oder formschlüssig, idealerweise mittels einer Schraubverbindung 32 miteinander verbunden. Hierdurch lassen sich die Teile 28', 28" schnell zusammen und wieder auseinander montieren. FIG. 6 shows a schematic view of a screw pump 1 according to the invention in a further embodiment. In this embodiment, the guide rail 28 is formed in several parts. It is composed of several, at least two, successively arranged and detachable parts 28 ', 28 "together. In tight space between the motor and the housing 2 thus protruding on the drive side part 28" of the guide rail 28 can be removed. The guide rail 28 is thus not an insertion of the unit 15 into the housing 2 in the way. Preferably, the individual parts 28 ', 28 "of the guide rail 28 are non-positively and / or positively, ideally connected to each other by means of a screw 32. In this way, the parts 28', 28" quickly assemble and disassemble.

Figur 7 zeigt eine schematische Ansicht auf eine erfindungsgemäße getriebeseitige Schienenführungsanordnung 18' in einer Ausgestaltung. Die Führungsschienen 20', 20" weisen jeweils eine Nut 36 auf. Durch die Nut 36 wird eine besonders sichere Führung des zu führenden Elements sichergestellt. Die Nut 36 erstreckt sich in Längsrichtung der Führungsschienen 20', 20". Idealerweise erstreckt sich die Nut 36 über die gesamte Längsausdehnung der Führungsschienen 20', 20". FIG. 7 shows a schematic view of an inventive transmission-side rail guide assembly 18 'in one embodiment. The guide rails 20 ', 20 "each have a groove 36. A particularly secure guidance of the element to be guided is ensured by the groove 36. The groove 36 extends in the longitudinal direction of the guide rails 20', 20". Ideally, the groove 36 extends over the entire longitudinal extent of the guide rails 20 ', 20 ".

Das Stützelement 26 weist rollenförmige Körper 34, bevorzugt Rollen, auf. Die Rollen 34 sind so an dem Stützelement 26 angeordnet, dass sie jeweils in Kontakt mit einer Führungsschiene 20', 20" kommen können. Durch die Verwendung von Rollen 34 wird ein reibungsarmes Verschieben der Einheit 15 ermöglicht. Idealerweise sind die Rollen 34 an den Enden des Stützelements 26 angeordnet und können so entlang der zwei parallel zueinander verlaufenden Schienen 20', 20", insbesondere in dessen Nuten 36, abrollen.The support member 26 has roller-shaped body 34, preferably rollers on. The rollers 34 are arranged on the support member 26 so that they can each come into contact with a guide rail 20 ', 20 "., By the use of rollers 34, a low-friction displacement of the unit 15 is made possible of the support element 26 and can thus along the two mutually parallel rails 20 ', 20 ", in particular in the grooves 36, roll.

Das Stützelement 26 weist wenigstens ein Verstellmittel 38', 38", insbesondere eine Verstellschraube, auf. Durch das Verstellmittel 38', 38" lässt sich die Einheit 15 sowohl in vertikaler wie auch horizontaler Richtung ausrichten.The support element 26 has at least one adjusting means 38 ', 38 ", in particular an adjusting screw. By means of the adjusting means 38', 38", the unit 15 can be aligned both in the vertical and in the horizontal direction.

Figur 8 zeigt eine schematische Ansicht auf eine erfindungsgemäße antriebsseitige Schienenführungsanordnung 18" in einer Ausgestaltung. Die Stütze 30 weist einen Durchbruch 44 auf, durch den die Führungsschiene 28 durchführbar ist. Idealerweise entspricht der Querschnitt des Durchbruchs 44 genau dem Außenmaß der Führungsschiene 28. Vorteilhafterweise ist der Durchbruch 44 viereckig ausgebildet. Der Durchbruch 44 kann variabel in der Größe ausgebildet sein. Hierzu kann die Stütze 30 ein Verstellelement 40 aufweisen, das den die Führungsschiene 28 aufnehmenden Teil des Durchbruchs 44 verschiedenartig begrenzen kann und dadurch die Größe des Durchbruchs 44 an die Ausmaße der Führungsschiene 28 anpasst. Dies hat zur Folge, dass die Stütze 30 für unterschiedlich große Führungsschienen 28 verwendbar ist. FIG. 8 shows a schematic view of an inventive drive-side rail guide assembly 18 "in one embodiment.The support 30 has an opening 44, through which the guide rail 28 is feasible Ideally, the cross section of the opening 44 corresponds exactly to the outer dimension of the guide rail 28. Advantageously, the breakthrough The opening 30 may have an adjusting element 40 which can limit the part of the opening 44 receiving the guide rail 28 in different ways, and thus the size of the opening 44 to the dimensions of the guide rail As a result, the support 30 can be used for guide rails 28 of different sizes.

Ferner weist die Stütze 30 noch Verstellschrauben 42', 42" auf, um die Einheit 15 sowohl in vertikaler wie auch horizontaler Richtung ausrichten zu können.Furthermore, the support 30 still has adjusting screws 42 ', 42 "in order to be able to align the unit 15 in both vertical and horizontal directions.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
SchraubenspindelpumpeScrew Pump
22
Gehäusecasing
33
Einlassinlet
44
Auslassoutlet
55
Förderraumdelivery chamber
66
Gehäuseeinsatzhousing insert
77
Antriebsspindeldrive spindle
88th
Laufspindelspeed spindle
99
Einlasskammerinlet chamber
1010
Auslasskammeroutlet
1111
Trennwändepartitions
1212
Lagercamp
1313
Lagerelementebearing elements
1414
Gehäusedeckelhousing cover
1515
Einheitunit
1616
Schmiermittelkanälelubricant channels
1818
FührungsschienenanordnungTrack assembly
20', 20"20 ', 20 "
Führungsschiene (getriebeseitig)Guide rail (gearbox side)
2222
Stütze (getriebeseitig)Support (gearbox side)
2424
Querstrebecrossmember
2626
Stütze EinheitSupport unit
2828
Führungsschiene (antriebsseitig)Guide rail (drive side)
28', 28"28 ', 28 "
teilbare Führungsschiene (antriebsseitig)divisible guide rail (drive side)
3030
Stütze (antriebsseitig)Support (drive side)
3232
Verbindungselement FührungsschieneConnecting element guide rail
3434
Rollenroll
3636
Nutgroove
3838
Verstellmittel (Stütze Einheit)Adjusting means (support unit)
4040
Verstellelement DurchbruchAdjustment element breakthrough
4242
Verstellmittel (Stütze (antriebsseitig))Adjustment means (support (drive side))
4444
Durchbruchbreakthrough

Claims (14)

  1. A screw spindle pump with guide rail arrangement, with a housing (2) which surrounds a delivery chamber (5), two spindles (7, 8), namely a drive spindle (7) and an opposed running run spindle (8), a housing insert (6) which is arranged in the housing (2) and in which the spindles (7, 8) are accommodated, at least one bearing element (13', 13"), which is connected to the housing insert (6) and on which bearings (12) of the spindles (7, 8) are arranged, and with at least one housing cover (14', 14"), closing a housing opening, whereby the bearing element (13', 13") together with the housing insert (6) and the spindles (7, 8) accommodated therein forms a unit (15) which, after the housing cover (14', 14") is taken off, is removable from the housing (2) through the housing opening
    characterized in that
    the screw spindle pump has at least one removable guide rail arrangement (18) which has at least one guide rail (20, 28) which extends in the longitudinal direction of the screw spindle pump and on which the unit (15) is guided in the axial direction in the housing (2).
  2. The screw spindle pump with guide rail arrangement as claimed in claim 1, characterized in that the housing cover (14', 14") keeps the unit (15) in its axial position in the housing (2).
  3. The screw spindle pump with guide rail arrangement as claimed in claim 1 or 2, characterized in that the bearing element (13', 13") is designed as a bearing cover, the outside diameter of which is equal to the inside diameter of the housing opening.
  4. The screw spindle pump with guide rail arrangement as claimed in one of claims 1 to 3, characterized by a rotation lock which prevents an axial rotation of the unit.
  5. The screw spindle pump with guide rail arrangement as claimed in one of claims 1 to 4, characterized by lubricant channels (16', 16") formed in the bearing element (13', 13") for lubricating the bearings (12), wherein the lubricant channels (16', 16") open into at least one end-side lubricant opening in the bearing element (13', 13").
  6. The screw spindle pump with guide rail arrangement as claimed in the preceding claim, characterized in that the guide rail arrangement (18) has at least one support (22, 30) for holding or guiding the guide rail (20, 28).
  7. The screw spindle pump with guide rail arrangement as claimed in claim 6, characterized in that the support (22, 30) has an adjustment means (38, 42), in particular an adjustment screw, for orienting the unit (15) and/or the guide rail (20, 28).
  8. The screw spindle pump with guide rail arrangement as claimed in one of claims 1 to 7, characterized in that the guide rail arrangement (18) has two guide rails (20) which run parallel to each other and are arranged on the housing (2).
  9. The screw spindle pump with guide rail arrangement as claimed in the preceding claim, characterized in that the guide rails (20) each have a groove (36) which extends in the longitudinal direction of the guide rails (20).
  10. The screw spindle pump with guide rail arrangement as claimed in either of claims 8 and 9, characterized in that a supporting element (26) which runs horizontally is arranged on the housing insert (6), preferably on one of the base surfaces thereof, and at least partially rests on the guide rails (20).
  11. The screw spindle pump with guide rail arrangement as claimed in the preceding claim, characterized in that the supporting element (26) has rollers (34) which act on the guide rails (20).
  12. The screw spindle pump with guide rail arrangement as claimed in either of claims 9 and 10, characterized in that an adjustment means (38), in particular an adjustment screw, is arranged on the supporting element (26).
  13. The screw spindle pump with guide rail arrangement as claimed in one of claims 1 to 12, characterized in that the guide rail (28) is composed of a plurality of parts which are arranged one behind another and are detachable from one another.
  14. The screw spindle pump with guide rail arrangement as claimed in one of claims 1 to 13, characterized in that the guide rail arrangement (18) is arranged on the transmission side and/or drive side of the screw spindle pump.
EP15705510.4A 2014-01-27 2015-01-22 Screw spindle pump Active EP3099899B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102014000846.0A DE102014000846A1 (en) 2014-01-27 2014-01-27 Screw Pump
DE202014006000.2U DE202014006000U1 (en) 2014-01-27 2014-07-25 Screw Pump
PCT/EP2015/051196 WO2015110498A1 (en) 2014-01-27 2015-01-22 Screw spindle pump

Publications (2)

Publication Number Publication Date
EP3099899A1 EP3099899A1 (en) 2016-12-07
EP3099899B1 true EP3099899B1 (en) 2019-12-04

Family

ID=51863506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15705510.4A Active EP3099899B1 (en) 2014-01-27 2015-01-22 Screw spindle pump

Country Status (7)

Country Link
US (1) US10087928B2 (en)
EP (1) EP3099899B1 (en)
CN (2) CN113757110A (en)
DE (2) DE102014000846A1 (en)
ES (1) ES2773292T3 (en)
RU (1) RU2684847C2 (en)
WO (1) WO2015110498A1 (en)

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US9927032B2 (en) * 2014-11-14 2018-03-27 T & E Pumps, Ltd. Direct drive assembly for pump assembly
WO2017009877A1 (en) * 2015-07-14 2017-01-19 3P Prinz S.R.L. A pump of the interchangeable type
DE102015121372A1 (en) * 2015-12-08 2017-06-08 Klaus Union Gmbh & Co. Kg Heatable screw pump
ITUA20162799A1 (en) * 2016-04-21 2017-10-21 Settima Meccanica S R L Soc A Socio Unico Improved "Barrel" volumetric pump
ITUA20162797A1 (en) * 2016-04-21 2017-10-21 Settima Meccanica S R L Soc A Socio Unico "Barrel" volumetric pump with improved jacket or liner, and maintenance method for said volumetric pump
GB2571972B (en) * 2018-03-14 2021-01-20 Edwards Tech Vacuum Engineering Qingdao Co Ltd Method and apparatus related to servicing of liquid ring pumps
DE102019128602B3 (en) 2019-10-23 2021-02-11 Leistritz Pumpen Gmbh Screw pump
DE102021133114A1 (en) * 2021-12-14 2023-06-15 Leistritz Pumpen Gmbh screw pump

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FR2174684A1 (en) * 1972-03-07 1973-10-19 Creusot Loire Extrusion machine - with internal barrel section haul off for exposing the screw
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DE202009001316U1 (en) * 2008-05-06 2009-04-09 Troester Gmbh & Co. Kg gear pump
JP4675421B2 (en) * 2009-03-27 2011-04-20 Thk株式会社 Syringe drive unit
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Also Published As

Publication number Publication date
RU2016134844A3 (en) 2018-08-21
EP3099899A1 (en) 2016-12-07
CN113757110A (en) 2021-12-07
US20170114785A1 (en) 2017-04-27
RU2684847C2 (en) 2019-04-15
CN106062313A (en) 2016-10-26
ES2773292T3 (en) 2020-07-10
DE102014000846A1 (en) 2015-07-30
WO2015110498A1 (en) 2015-07-30
RU2016134844A (en) 2018-03-05
US10087928B2 (en) 2018-10-02
DE202014006000U1 (en) 2014-10-22

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