EP2881585A1 - Dispositif de transport d'une masse s'écoulant, en particulier d'un mélange de matériaux comme du mortier - Google Patents

Dispositif de transport d'une masse s'écoulant, en particulier d'un mélange de matériaux comme du mortier Download PDF

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Publication number
EP2881585A1
EP2881585A1 EP14193898.5A EP14193898A EP2881585A1 EP 2881585 A1 EP2881585 A1 EP 2881585A1 EP 14193898 A EP14193898 A EP 14193898A EP 2881585 A1 EP2881585 A1 EP 2881585A1
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EP
European Patent Office
Prior art keywords
rotor
rotation
support element
output part
conveying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14193898.5A
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German (de)
English (en)
Inventor
Josef Arnold
Alexander Breunig
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.)
Knauf Pft & Co KG GmbH
Original Assignee
Knauf Pft & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Knauf Pft & Co KG GmbH filed Critical Knauf Pft & Co KG GmbH
Publication of EP2881585A1 publication Critical patent/EP2881585A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/02—Arrangements of bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
    • F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
    • F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
    • F04C2/1075—Construction of the stationary member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/50—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet

Definitions

  • the invention relates to a device for conveying a flowable conveying mass, in particular a building material mixture such as mortar.
  • Such conveyors use progressing cavity pumps. These comprise a fixed, spiral-shaped stator, which consists at least in the interior of an elastic material, and arranged therein, also helical rotor.
  • the rotor is driven by a motor via a connection with drive elements and carries out within the stator an eccentrically rotating movement about its axis of rotation. Due to the shape of the cavity between the rotor and stator sealed cavities are present, in which mass can accumulate. Due to the eccentric, axial movement of the rotor, the conveying mass is conveyed into a downstream of the rotor or stator arranged output part, which comprises outlet openings for the conveying mass.
  • outlet devices such as faucets or hoses may be connected to deploy the conveying mass according to the purpose of use.
  • a pumping pressure is generated at one end of the rotor, referred to below as the first end, for conveying the delivery mass.
  • the rotor opposite to the conveying direction of rotation ie counterclockwise, to rotate.
  • a suction pressure is generated at the first end of the rotor and material can be removed thereby, which clogs the output part.
  • the rotor runs too far forward or down in the output part due to the reaction force in the axial direction.
  • the worm pump includes a stator and a rotor that rotates about an axis of rotation to convey delivery mass toward an output part.
  • the rotor has at one end a clearing element, in particular for clearing the starting part of conveying mass contained therein.
  • the rotor is detachably connected or connectable to a shaft of a motor drive, for example via a coupling.
  • the rotor for example, for cleaning, in a direction opposite to the rotation axis direction in a reverse rotation, a release of the rotor from the coupling with the shaft is possible because its axial displacement can be greater than a maximum axial engagement path of the detachable connection.
  • the maximum axial displacement of the rotor is limited by an end wall of the output part.
  • the clearing element is supported and moves along it rotating. Consequently, the end wall is subject to wear after some time. Due to the formation of the end wall as part of the starting part, a replacement turns out to be complex and still causes additional costs, since the entire output part must be replaced.
  • DE 199 43 107 C2 further describes an eccentric screw pump connection device consisting of a rotor which rotates in a stator.
  • the rotor is connected via a shaft to a drive motor.
  • Rotor and shaft can be connected via a detachable coupling.
  • a stop is provided which limits the axial displacement of the rotor. This stop is a transverse pin, which is laterally pressed into a hole. Due to the compression of the transverse pin, replacement of this part in the event of wear is costly.
  • an object of the present invention to provide an improved apparatus for conveying a flowable conveying mass, in particular a building material mixture such as mortar, in particular with an improved support for a backward-running rotor.
  • the rotor for example, for the purpose of cleaning the output part in a reverse rotation (ie the conveying direction of rotation opposite, for example, counterclockwise) moves caused by the reversal of the rotational movement direction at the first end of a suction to remove, for example, blockages from the output part or connected hoses can.
  • the rotor is detachably connected to a drive shaft of an engine, for example by means of a clutch.
  • the way that the rotor can travel without this connection solves independently limited.
  • the rotor performs an axial movement into the output part during the movement in the return direction of rotation.
  • a support element is provided on the wall of the output part. The first end of the rotor runs axially against this support element, or its contact surface and thus prevents a release of the connection between the rotor and the drive shaft.
  • the support element is arranged with respect to the axis of rotation of the rotor such that the axis of rotation centrally by the support element, or preferably runs centrally through the contact surface.
  • the first end of the rotor is supported on the contact surface in the return rotation direction and slides on this.
  • the support element is also releasably secured to the wall according to the invention. This facilitates the replacement in case of wear by simply loosening the support element. Furthermore, not the entire output part must be replaced.
  • the support element has a support head and in particular a, preferably cylindrical, central portion.
  • the support head may be formed so that a tool can apply a force to it in order to release the support element from the wall.
  • the support element preferably has a central axis, which coincides with the axis of rotation of the rotor.
  • the use of a larger or smaller support element for rotors with smaller or larger diameter is thus easily possible because the coincident alignment of the central axis of the support element with the axis of rotation of the rotor always ensures the best possible support of the rotor on the contact surface.
  • the contact surface is arranged at the end of the support head in the direction of the rotor.
  • the contact surface can therefore be arranged at the upper end of the support element on the support head.
  • the rotor can be supported with its first end, or its underside in the return direction on the contact surface and slide on it.
  • the contact surface of the support element is rounded in the direction of the first end of the rotor, preferably convexly curved, educated. Such a shaped surface improves the centering of the rotor on the support element.
  • the contact surface has a vertex which coincides with the central axis.
  • the vertex is thus on the axis of rotation of the rotor.
  • the contact surface of the support element is heat-treated, in particular hardened.
  • the surface may be case hardened or nitrided to increase surface hardness and thus improve wear resistance.
  • the contact surface of the support element on a wear-resistant and corrosion-resistant coating is conceivable.
  • metallic coatings such as galvanizing but also organic or inorganic coatings are conceivable.
  • the support element on a threaded portion which is at least partially provided on the central portion.
  • This threaded portion may be arranged at the lower part of the central portion, ie the part which is opposite to the support head.
  • the threaded portion at least partially comprises a thread, preferably an external thread.
  • a thread preferably an external thread.
  • This may be a commonly used thread, for example a metric.
  • the wall of the output part comprises an opening.
  • This opening may for example be drilled or introduced into the wall of the starting part by another suitable method.
  • the opening may extend through the entire wall thickness of the wall of the output part, but also only through part of the wall.
  • the opening at least partially comprises a mating thread.
  • the mating thread may, for example, extend over the entire opening in order to receive corresponding threads.
  • the support element is at least partially screwed into the opening and / or can be at least partially screwed.
  • the support element can be screwed in the interior of the output part and / or fixed from the outside by means of a lock nut. It is also conceivable to screw the support element from the outside into the starting part. The advantage of this is that the output part does not have to be removed when replacing the support element.
  • the central portion of the support member on a stop is as far screwed into the opening until the stop rests against the wall.
  • the stop can run around the support surface.
  • the stop limits the maximum depth of engagement.
  • the output part comprises a pressure flange.
  • This can in particular have fastening threads for axial fastening elements.
  • the pressure flange is releasably and sealingly connected to the eccentric screw pump by means of a support and / or can be connected.
  • the pressure flange may be screwed to the screw pump, for example. This allows, for example, remove the pressure flange if necessary and replace the support element.
  • the output part comprises several sections. These sections have different shapes, which support the flow of the conveying mass and reduce blockages of the output part by the conveying mass.
  • a first section comprises a funnel shape.
  • This section is the eccentric screw immediately downstream and facilitates through the funnel-like shape, the introduction of the conveying mass in the output part.
  • a second portion extends along a maximum height and at least partially has an asymmetric funnel shape.
  • the second section immediately follows the first section described above and, by its design, facilitates the further flow of the conveying mass.
  • the preferably asymmetric funnel shape ensures that, for example, the conveying mass is not stuck between the wall and the supporting element and thus blockages by the conveying mass are minimized.
  • a third section has a pointed shape. This third section immediately follows the previously described second section. Due to the tapered shape, the outflow of the conveying mass in the direction of the outlet device is favored.
  • a fourth section has a preferably cylindrical shape and communicates with the outlet opening.
  • the fourth section directly follows the previously described third section and may for example be configured to receive a tube or hose from the outlet device.
  • a support member suitable and intended for use in a device according to the invention, comprising a support head, a preferably cylindrical central portion and a threaded portion, wherein the support element on the support head has a contact surface.
  • Fig. 1 shows a device according to the invention with an eccentric screw pump 1 for conveying a flowable conveying mass M, in particular a building material mixture such as mortar.
  • the eccentric screw pump 1 comprises a stator 3 with an inside rotor 2.
  • the rotor 2 is usually made of abrasion-resistant, hard material such as steel, whereas the stator 3 consists of elastic and resilient material such as rubber.
  • the stator 3 further comprises an outer wall 4 for Protection against external influences, which is formed in particular from a hard material such as steel.
  • a conveying mass M for example mortar, is conveyed in a conveying direction FR to an output part 7, which is arranged immediately downstream of the rotor 2 or the stator 3, wherein a pressure flange 6 is provided to seal the output part 7 against the stator 3 fasten, for example via a (not shown) screw.
  • the conveying mass M continues to flow to an outlet opening 11 which communicates with an outlet device 10.
  • the outlet device 10 comprises a pressure tester 10a, a connecting part 10b, which is screwed into the outlet port 11, for example, for direct discharge of the conveying mass M and a valve 10c, to which a hose, pipe, tap or the like can be connected to the conveying mass M. according to the purpose of application.
  • the output part 7 further comprises a wall W, in which an opening 12 is introduced.
  • This opening 12 may for example be a bore and will be explained later in more detail.
  • the bore receives a support member 9 which is fixed in the opening 12.
  • the support element 9 comprises a central axis MA, wherein the support element 9 is arranged so that the central axis MA coincides with the axis of rotation A of the rotor 2.
  • the rotor 2 is coupled to a drive shaft (not shown) via suitable means for transmitting the power of a drive (not shown) to the rotor 2, which drive is capable of both clockwise and anti-clockwise rotation.
  • the coupling of rotor 2 and the drive shaft, not shown, is releasable, for example via a coupling.
  • the thus driven rotor 2 rotates eccentrically about a rotation axis A of the rotor 2.
  • a rotation generates the rotation D. corresponding (ie clockwise) a pumping pressure at a first end 8 of the rotor 2, which is arranged in the immediate vicinity of the output part 7.
  • blockages of the delivery mass M may occur, for example, if too much delivery mass M is pumped into the output part 7 without being discharged via the outlet device 10, or delivery mass M runs against the support element 9 and accumulates there.
  • a suction pressure is generated at the first end 8 of the rotor 2, which can suck the present in the output part 7 conveying mass M opposite to the conveying direction F and thus can remove blockages.
  • the support element 9 is provided as an axial travel limit.
  • the support element 9 comprises a contact surface 14, which is preferably convex, wherein the central axis MA of the support element 9, or the axis of rotation A of the rotor 2 extends through at least part of the contact surface 14.
  • Fig. 1 can be seen, the rotor 2 runs with its first end 8, respectively with its underside, on the support element 9.
  • the point P shown corresponds approximately to the center of the first end 8, more precisely half of a diameter d of the first end 8 of the Rotor 2.
  • the point P is always in the area of the contact surface 14 and moves along this, while the rotor in the return rotation direction R slides on it. During this sliding conveyor mass M can continue to be sucked out of the output part 7 without the rotor 2 runs the risk to move axially too far in the output part 7.
  • Fig. 2 shows the support element 9 in a perspective view.
  • the support element 9 may be, for example, a screw bolt and comprises a central portion 16, which is preferably formed cylindrical.
  • the support element 9 comprises a support head 13, which is arranged at one end of the central portion 16.
  • the support head 13 may be formed such that a tool can grip it, so as to solve the support member 9 from the wall W of the pressure flange 6 or re-introduce.
  • the support head 13 is formed for this purpose as a hexagon socket screw.
  • the support member 9 comprises a threaded portion 18 which is disposed at another end of the central portion 16 and may include a thread 18 a.
  • the extension of the threaded portion 18 may be variable depending on the purpose and wall thickness of the wall W, so extend over both the entire central portion 16, as well as only over a portion of the.
  • a stop 17 is further arranged on the support element 9, or on the central portion 16, for example, this stop 17 be a wacked step of the central portion 16.
  • a part of the support element 9 protrude through the wall W and are fixed on the outside, for example via a lock nut by means of the thread 18 a of the threaded portion 18.
  • various sizes, diameters and shapes of the support element 9 are conceivable in order to be able to be adapted to different rotor sizes.
  • the support element 9 is screwed tight in the interior of the outlet part 7 in the opening 12.
  • the opening 12 comprises a mating thread 18b (see. Fig. 5 ), in which the support element 9 is screwed by means of the thread 18 a of the threaded portion 18.
  • the contact surface 14 of the support member 9 may be subject to wear over time, since the rotor 2 runs in the return against this and slides on the contact surface 14 and thus, for example, abrasion is caused over time.
  • the support element 9 can be replaced in case of wear by the output part 7 removed and the support member 9 is unscrewed.
  • the support element 9 can also be pushed through from outside through the opening 12 of the wall W and fixed from outside. In this case, it is not necessary to remove the output part 7.
  • a contact surface 14 is also provided. This is preferably rounded, in particular, this has a convexly curved shape with a vertex 15.
  • the contact surface 14 is formed such that the vertex 15 is arranged on the central axis MA. This ensures that the first end 8 of the rotor 2 is always in the return rotation direction R in the region of the contact surface 14.
  • the support element 9 thus serves as an axial travel restriction and further prevents lateral breakage of the rotor 2 during sliding on the contact surface 14.
  • the contact surface 14 may further be heat treated to improve wear resistance and corrosion resistance.
  • a case hardening can be provided. It is also possible to coat the starting surface alternatively or additionally, for example with a galvanizing or an organic or inorganic coating.
  • Fig. 3 shows an output part 7 with the support element 9 in a plan view.
  • the support element 9 is thus fixed in the output part 7 as described above.
  • a support 22 abuts against the stator 3, wherein a sealing flange 21 seals the transition region between the stator 3 and the output part 7, so that no conveying mass M passes to the outside during the pumping or suction process.
  • Two axes I and II have their center 19 as a point of intersection on the support element 9, more precisely on the vertex 15 of the contact surface 14.
  • the apex 15 lies on the central axis MA of the support element 9, which in turn with the axis of rotation A of the rotor coincides.
  • this illustration again illustrates that the support element 9 is arranged centrally in the output part 7, that the rotor 2 in return always has a point P as the center of the diameter d of the first end 8 in the region of the contact surface and thus always is located on the contact surface 14.
  • FIG. 3 This is clarified in Fig. 3 by the representation of the first end 8 of the rotor 2 at several times.
  • the illustrated circles 8 (t 0 ), 8 (t 1 ) and 8 (t 2 ) show the first end 8 of the rotor 2 in the return to Time t 0 , or t 1 , or t 2 , where it is true that t 2 > t 1 > t 0 .
  • each time can be a period of one second, in which the first end 8 of the rotor 2 moves in the return rotation direction R against the contact surface 14, wherein the time t 0 is the starting time of the movement.
  • the point P is shown as the center of the first end 8, or the diameter d as a function of time.
  • the points P (t 0 ), P (t 1 ) and P (t 2 ) represent the centers of the circles 8 (t 0 ), 8 (t 1 ) and 8 (t 2 ) at the same times. This will be clarified in that at least the center point P of the first end 8 of the rotor 2 is always located on the run-on surface 14 of the support element 9 at all times. This ensures that during operation, the first end 8 of the rotor 2 slides on the contact surface 14 and thus there is no risk that the rotor 2 in the return rotation direction R axially into the output part 7 runs.
  • Fig. 4 shows the output part 7 without the support element 9 in a sectional view.
  • the output part is by means of a pressure flange 6 on the support surface 22, wherein the sealing flange 21 seals the area between the stator and the output part 7.
  • the output part 7 comprises in its interior a shape which makes it possible to absorb and convey the conveying mass M as effectively as possible in order to be able to deploy the conveying mass M by means of the outlet device 10 connected to the outlet opening 11.
  • the output part 7 can be divided into a plurality of sections 7a to 7d, which follow each other immediately and influence the flow of the conveying material by their respective shape and inhibit blockages by the conveying material M.
  • the first section 7a is preferably funnel-shaped and thus facilitates the entry of the conveying mass M in the output part 7, which is pumped by the rotor 2 in the conveying direction of rotation D.
  • the second section 7b extends at a maximum height h max and at least partially has an asymmetrical funnel shape.
  • the second section 7b immediately follows the first section 7a and facilitates the further flow of the conveying mass M.
  • the preferably asymmetrical funnel shape ensures that, for example, the conveying mass is not stuck between the wall and the supporting element and thus blockages due to the conveying mass M are minimized , A detailed description of the form will be given below in more detail.
  • the third section 7c immediately follows the second section 7b and preferably has a pointed shape. As a result, the outflow of the conveying mass is favored because the conveying mass M is subject to a downward movement in the direction of the outlet opening 11 due to the tapered angle.
  • the fourth section 7d also follows immediately the third section 7c and has a preferably cylindrical shape.
  • the fourth section 7d is at least partially formed as a tube.
  • the fourth portion 7d communicates with the outlet port 11 and contains the conveying mass M which is directed in the direction of the outlet port 11 which receives, for example, a pipe or hose of the outlet device 10 to discharge the conveying mass M.
  • Fig. 5 shows the output part 7 with the support element 9 in a sectional view.
  • the interior of the output part 7 is divided into a plurality of sections 7a to 7d.
  • the shape of the second section 7b is subdivided into the partial areas a (h) and b (h) as a function of the maximum height h max of the second section 7b.
  • the second section 7b is subdivided by the support element 9 into the partial surfaces a (h) and b (h).
  • the partial surface section b 1 is larger than the partial surface section a 1 with respect to the partial height section h 1 .
  • the partial area b (h) of the second section 7b is always larger than the partial area a (h) until the height h corresponds to the maximum height hmax .
  • the conveying mass M travels a shorter path on the entire surface area a (h) when it is directed to the outlet opening 11 and thus to the outlet device 10.
  • the support element 9 presents itself as such an obstacle.
  • the support element 9 that is to say the side which is not connected to the fourth section 7d or the outlet opening 11, Accumulate mass M and thus lead to blockages. This would be the case in particular if a conventional shaping of the interior of the starting part 7 were provided, for example in the form of a funnel.
  • an opening 12 is provided in a wall W of the output part 7.
  • the opening 12 is continuous, but it may also be only partially continuous.
  • the opening 12 is introduced by means of a bore in the wall W.
  • the opening 12 comprises the mating thread 18b for receiving the support element 9 by being screwed into the opening 12 or into the mating thread 18b via the thread 18a of the threaded section 18 of the support element 9.
EP14193898.5A 2013-12-04 2014-11-19 Dispositif de transport d'une masse s'écoulant, en particulier d'un mélange de matériaux comme du mortier Withdrawn EP2881585A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201320105512 DE202013105512U1 (de) 2013-12-04 2013-12-04 Vorrichtung zum Fördern einer fließfähigen Fördermasse, insbesondere einer Baustoffmischung wie Mörtel

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EP2881585A1 true EP2881585A1 (fr) 2015-06-10

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EP14193898.5A Withdrawn EP2881585A1 (fr) 2013-12-04 2014-11-19 Dispositif de transport d'une masse s'écoulant, en particulier d'un mélange de matériaux comme du mortier

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EP (1) EP2881585A1 (fr)
DE (1) DE202013105512U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115386826A (zh) * 2022-08-17 2022-11-25 无锡恒信北石科技有限公司 一种氮化工装、包含该工装的螺杆泵定子及其氮化工艺

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2290137A (en) * 1938-10-22 1942-07-14 Roy G Dorrance Compressor for refrigerating apparatus
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EP0648585A1 (fr) * 1993-10-18 1995-04-19 Putzmeister Aktiengesellschaft Dispositif pour mélanger et transporter des matériaux de construction
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US2290137A (en) * 1938-10-22 1942-07-14 Roy G Dorrance Compressor for refrigerating apparatus
US2545604A (en) * 1946-02-01 1951-03-20 Robbins & Myers Pump
US3567348A (en) * 1968-04-29 1971-03-02 Stenberg Flygt Ab Screw pump provided with a radially movable rotor coupling
DE9211567U1 (fr) * 1992-08-27 1992-10-29 Bug Betriebsanlagen- Und Grundbesitz Gmbh, 8046 Garching, De
EP0648585A1 (fr) * 1993-10-18 1995-04-19 Putzmeister Aktiengesellschaft Dispositif pour mélanger et transporter des matériaux de construction
DE19943107C2 (de) 1999-09-09 2001-09-20 Netzsch Mohnopumpen Gmbh Exzenterschneckenpumpen-Anschlußvorrichtung und Exzenterschneckenpumpe mit einer derartigen Anschlußvorrichtung
DE202007013820U1 (de) 2007-10-02 2008-11-06 Knauf Pft Gmbh & Co.Kg Vorrichtung zum Fördern einer fließfähigen Fördermasse, insbesondere einer faserhaltigen Biomasse

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115386826A (zh) * 2022-08-17 2022-11-25 无锡恒信北石科技有限公司 一种氮化工装、包含该工装的螺杆泵定子及其氮化工艺
CN115386826B (zh) * 2022-08-17 2023-09-15 无锡恒信北石科技有限公司 一种氮化工装、包含该工装的螺杆泵定子及其氮化工艺

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