Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
  • B28C5/02—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions without using driven mechanical means effecting the mixing
  • B28C5/026—Mixing guns or nozzles; Injector mixers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
  • B01F25/30—Injector mixers
  • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
  • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
  • B01F25/3142—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction
  • B01F25/31423—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit the conduit having a plurality of openings in the axial direction or in the circumferential direction with a plurality of perforations in the circumferential direction only and covering the whole circumference
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
  • E04F21/00—Implements for finishing work on buildings
  • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
  • E04F21/06—Implements for applying plaster, insulating material, or the like
  • E04F21/08—Mechanical implements

Definitions

• the invention relates to a tubular Beigabe search for inclusion in a mixing device for the controlled metered addition of an additive in a pumpable mixture, in particular in a pumpable hydraulically setting mixture, in particular in a shotcrete composition, wherein the Beigabe mosaic over a Beigabe touch extending through the mixing section for guiding the pumpable Mixture has and in a wall of Beigabe topicss at least one opening into the mixing section opening for introducing the additive is introduced into the mixing section and wherein the Beigabe tone at least one sealing element for producing an at least partially fluid-tight connection between the Beigabe topics and the mixing device is present.
• the invention relates to a housing element of a mixing device for the controlled injection of an additive into a pumpable mixture, in particular a pumpable hydraulic
• the housing element comprises a passage opening for the pumpable mixture, wherein the passage opening is designed for at least partially receiving a Beigabe Sharings.
• Another aspect of the invention includes a set of equipment including a loading piece and a housing member.
• the invention relates to the use of a Beigabe Industriess for the controlled metered addition of an additive in a pumpable mixture.
• Additives in hydraulically setting mixtures which usually have a relatively high solids content of abrasive sand, gravel and cement.
• Necessary recipe ingredients such as Water (in dry shotcrete), compressed air and additives (e.g., solidification accelerator)
• Wear part is designed and kept interchangeable in a special housing. Lateral inlets on Beigabe search allow the addition of an additive into the conveyed through the tubular Beigabe crop mixture. Depending on the application different Beigabe technicallye be used, which, for example, in terms of number, size and geometry of the side inlets and / or in terms of
• EP 1 570 908 A1 (Sika Technology AG) discloses a shotcrete nozzle for applying wet shotcrete or dry sprayed concrete with an integrated addition piece for adding an admixture.
• the Beigabe Georgia has a variety of side channels for introducing additives into the shotcrete.
• the integrated add-on piece of the shotcrete nozzle is intended to be received in a housing with a connection for the supply of additive.
• the O-rings used for the sealing are arranged in correspondingly formed grooves in the housing of the mixing device.
• Beige piece of a precision material, e.g. Steel, to be produced.
• the Beigabe Georgia example made of plastic, which is particularly advantageous for weight reasons, resulting in large tolerances.
• the grooves for the O-rings are usually designed with oversize. However, this results in the insertion of Beigabe Industriess in the housing, however, a radial interference fit. Due to this press fit are at
• the object of the present invention is therefore to provide a Beigabe Fantasy associated with the aforementioned technical field, which is easier to handle during installation and removal in or out of a housing and still allows a reliable seal.
• Another task is to provide a corresponding housing element of a mixing device.
• the at least one sealing element is with respect to a longitudinal axis of the tubular
• Axial seal one at least partially in the passage opening
• Beigabe Industriess can be pressed by the means for applying the force against the sealing pad.
• tubular filler means a tubular member having an inlet and an outlet connected by a fluid conducting channel or conduit.
• the fluid-conducting channel or the delivery line corresponds to the mixing section of the tubular Beigabe Georgias. In the mixing section, mixing of the pumpable mixture with the additive takes place.
• delivery line and mixing section are in the present
• a cross-sectional area of the fluid-conducting channel may be along the
• a shape of the cross-sectional area can be arbitrarily selected according to the intended application, for example, circular, oval and / or polygonal. For fluid dynamic reasons, a circular cross-sectional area is preferred.
• a circular cross-sectional area is preferred.
• the tubular Beigabe Gia a cylindrical pipe section, in particular with a substantially circular cylindrical conveying line.
• cylindrical pipe section in the present context in particular pipe sections which in the area of the lateral surface over
• An inner diameter, in particular a minimum inner diameter, of the delivery line is preferably at least 25 mm.
• a maximum value of the inner diameter of the delivery line measures in particular at most about 100 mm.
• the inner diameter of the conveying line is 32 mm, 38 mm, 50 mm, 60 mm, 65 mm or 85 mm. This can be the
• An overall length of the loading piece, measured in the axial direction, is advantageously 30-300 mm, more preferably 50-150 mm.
• the "longitudinal axis of the tubular Beigabests" corresponds in particular to the predetermined by the fluid-conducting channel or the conveying line direction, which in particular also a conveying direction of in the
• Connection in particular for the defined by the fluid-conducting channel or the delivery line direction.
• sealing element in the present context, in particular for a molded plastic element.
• the sealing element is designed so that by a touching contact pressure on a Sealing surface on a part to be sealed results in a fluid-tight connection.
• Sealing element e.g. an O-ring extending substantially radially from a first sealing surface on a first body to a second sealing surface on a second body and sealing a radial clearance.
• a radial seal is therefore pre-pressed substantially during assembly by a force acting in the radial direction in order to achieve the desired sealing effect.
• axial seal particularly designates a sealing element which extends along a longitudinal axis and seals a gap between two axially spaced sealing surfaces.
• an axial seal during assembly is in particular pre-pressed by a force acting in the axial direction.
• the direction of flow of a leak therefore extends in particular in the axial direction, while in the case of an axial seal, depending on the angle of the spaced sealing surfaces relative to the axis, the flow direction has at least one radial component.
• the inventive Beigabe Dialoge can be used in a simple manner in appropriately trained mixing devices or housing elements and also remove it again.
• an outer diameter of the inventive Beigabe unitye can with respect to the inner diameter of the receiving opening in the
• Mixing device can be chosen significantly lower, so that the
• Additives in particular in the metered addition of an additive in a pumpable hydraulically setting mixture in particular in
• Shotcrete composition an advantage.
• the shotcrete composition can be in particular a wet, dry or humid
• the axial seal is formed as an annular sealing lip, which in particular in a section, preferably continuously, has a wedge-shaped tapered cross-section.
• a region of a wedge tip of the sealing lip is designed as a sealing edge.
• the area of the wedge tip forms a defined sealing edge with a small contact surface. Under the action of a force acting in the axial direction thus results in a high pressure in the region of the support surface, which results in a good sealing effect.
• the wider region of the wedge tip located behind the region of the wedge tip at the same time ensures high mechanical stability of the sealing lip or of the sealing element.
• the axial seal may also be in the form of an O-ring or a flat gasket, for example of rectangular or conical cross-section.
• a wedge angle of the sealing lip measures 10 ° -80 ° Q , preferably 20 ° -70 ° Q , more preferably 25 ° -35 ° Q. Under the wedge angle is in this
• Keil dictate coinciding wedge surfaces of the sealing lip understood. Such acute wedge angle have been found to be particularly suitable with regard to optimum sealing effect and stability.
• wedge angles of less than 10 ⁇ or more than 80 ⁇ are possible.
• the sealing lip in the region of the wedge tip particularly preferably has a convexly curved edge surface as a sealing edge.
• the bearing surface of the sealing edge can be further reduced on a surface, since the bearing surface in this case a
• Edge surface improves the mechanical stability of the sealing lip against a sharp-edged wedge tip, since the risk of edge damage, e.g. by tearing the sealing lip in the thin edge area, is reduced.
• Convex curved edge surfaces are not mandatory.
• the sealing lip in the region of the wedge tip can, for example, also be formed with sharp edges or with a flattened sealing edge.
• the axial seal is on a front side of a present on the beige Beigabe Gire, flange
• the flange acts as a support element for the
• Axial seal This allows in a simple manner an arrangement of the axial seal on Beigabe conference.
• the flange in the axial direction is flush with the tubular Beigabe contest.
• the axial seal is arranged, for example, on an end face of the wall of the tubular beige piece and / or on an end face of a step-like taper and / or a radially tapering taper of the tubular beige piece.
• the arranged at the end face of the flange axial seal is at least partially, preferably completely, of the wall of the
• Beigabe Industriess arranged spaced so that there is a groove between the axial seal and the wall.
• the groove also has in particular a concave curved boundary surface. Due to the spacing of the axial seal, the sealing lip better adapted to the conditions of
• Sealing pad to be pressed in the mixing device.
• the area of the wedge tip when pressed against the sealing support in the mixing device to a limited extent remains movable in the radial direction and can be pressed against the sealing support better.
• a concave curved boundary surface of the groove also has the advantage that there are fewer or no edges in the groove area, in which material could get stuck. As a result, a possible accumulation of material and the associated risk of clogging is reduced when using the Beigabe Industriess in a mixing device. In addition, grooves configured in this way can be cleaned more easily. In principle, the axial seal but also on the wall of the groove
• Beigabests fitting be arranged. It is also possible to provide a groove with non-concave curved boundary surface. However, in these cases, the advantages mentioned above are at least partially eliminated.
• Axial seal made of a plastic particularly preferably a plastic having a hardness of 50 - 120 Shore-A, manufactured. Particularly preferably, the plastic has a hardness of 70-95 Shore-A.
• Example plastics made of polyurethane Such plastics have a good mechanical stability and have an optimal deformability when applying an axial force, so that a good sealing effect is obtained. This has been particularly true in the use of the beige piece under relatively harsh conditions in connection with hydraulically setting mixtures, in particular wet, earth-moist or dry
• the addition piece is designed as an axial seal in the region of the at least one sealing element.
• the at least one sealing element and / or the axial seal at least in the region of the at least one sealing element consists in particular of the same material as the beige piece.
• the Beigabe scholar and the at least one sealing element or the axial seal in this case form a cohesively connected unit. This is particularly advantageous
• Beigabe search made at least in the region of at least one sealing element made of a plastic, particularly preferably a plastic with a Hardness of 50 - 120 Shore-A. Even more advantageous are plastics of hardness 70-95 Shore-A. Most preferably, the Beigabefan, apart from a possible reinforcing element, completely integrally formed. This means in particular that the Beigabefan together with the
• Axialdichtung and any other elements, such as the at least one flange, a cohesively connected unit forms.
• the addition piece consists of a one-piece cast body and optionally an at least partially embedded reinforcing element.
• the cast body consists of this
• Reinforcing element in particular an annular reinforcing element is advantageously at least partially, in particular completely, in
• Such a reinforcing element can be embedded directly in the casting of the casting in this.
• Beigabe Tech but also consist of several individual and non-positively and / or positively connected parts.
• the further sealing element is designed in particular as a further axial seal.
• the further sealing element is configured as an annular sealing lip, which has a wedge-shaped cross section and is designed as a sealing edge, which in the region of the wedge tip particularly preferably has a convexly curved edge surface as a sealing edge.
• a wedge angle of the sealing lip the further sealing element advantageously measures specifics
• the axial seal arranged on the end face of the rejuvenating taper is arranged at least partially, preferably completely, spaced from the wall of the insert, so that there is a groove between the axial seal and the wall which advantageously has a concavely curved boundary surface.
• the second sealing element on a further projecting flange or on an end face of the wall of the
• sealing element which, for example, no wedge-shaped
• Has cross section such as an O-ring or a flat gasket with rectangular cross-section.
• Feed line opening opening for example, between the at least one sealing element and the further sealing element are arranged.
• the region of the opening in this case can be completely sealed in a housing by the two sealing elements, in particular in the form of axial seals.
• This is advantageous in view of a controlled metered addition of an additive into a pumpable mixture, in particular into a pumpable hydraulically setting mixture, in particular into a wet, dry or dry shotcrete composition.
• a maximum extent, in particular a maximum outer diameter, of the further sealing element in a direction perpendicular to the longitudinal axis and / or a radial direction of the tubular Beigabewins less than a maximum extent, in particular a maximum outer diameter of the at least one sealing element.
• Beigabe Sharings provide at least partially demountable opening. However, this eliminates the aforementioned advantages at least partially.
• the tubular beige piece preferably has a structural reinforcing element.
• Reinforcing element is advantageously made of a material with less elasticity than a material of the fluid-conducting channel or the mixing section.
• the reinforcing element may for example be made of plastic, metal and / or a composite material.
• the mechanical stability in subareas, in particular in the radial direction, of the tubular Beigabe Georgias can be specifically increased, wherein the necessary axial elasticity is maintained.
• the reinforcing element is made of a metal, in particular steel.
• a metal in particular steel.
• the reinforcing element as an annular and / or hollow cylindrical element, in particular as
• the reinforcing element can be arranged, for example, in a simple manner in the region of the fluid-conducting channel and thereby has an optimum supporting effect in the radial direction.
• differently shaped reinforcing elements can also be provided. These may be fibers, grids or braids of fibers, for example.
• a reinforcement of the tubular Beigabe Georgias can also be achieved in the radial direction without losing the necessary flexibility in the axial direction.
• a length of the reinforcing element, in particular of a metal ring, in the axial direction of the loading piece is advantageously 5 to 50%, in particular 10 to 30%, of the total length of the loading piece.
• Reinforcing element in particular of a metal ring, is advantageously smaller than the thickness of the wall of the tubular Beigabe Congresss in the region of the reinforcing element. This achieves an optimum reinforcing effect with compact dimensions and the necessary elasticity in the axial direction.
• the reinforcing element can be completely embedded in the wall of Beigabe Congresss without protruding.
• the reinforcing element is at least partially, preferably completely, embedded in a wall of the tubular Beigabe Georgias or the fluid-conducting channel.
• the addition piece can not be radially deformed under normal conditions and thus the function of the sealing lips is maintained over a wide range.
• the reinforcing element does not protrude in the interior of the tubular Beigabespas. This will be through the
• the reinforcing element is arranged in the region of the fluid-conducting channel or the mixing section. If the Beigabe Georgia about two Has sealing elements, the reinforcing element is advantageously arranged in a region between the two sealing elements.
• the reinforcing element can also be present in other areas.
• the housing element comprises a base body with a passage opening, wherein the passage opening is designed for the at least partial reception of a loading piece as described above.
• the housing element is characterized in particular by the fact that at least one sealing support arranged on the housing element (200) is provided for a sealing element of the loading element designed as an axial seal, and means are provided for applying a force acting on the loading element in the axial direction and / or longitudinal direction of the passage opening, so that the axial seal of an at least partially received in the passage opening Beigabe Sharings can be pressed by the means for applying the force against the sealing pad.
• the housing element also has a connection for feeding the
• the passage opening of the housing element is in particular at least partially substantially complementary to the inventive Beigabe Georgia formed. Furthermore, the loading piece can be accommodated coaxially in the passage opening of the housing element.
• the interaction of the sealing pad and the means for applying the force handling during installation and removal of a tubular Beigabe conference as described above is substantially simplified and at the same time a reliable seal is ensured.
• the means for applying an axial force to the loading piece can in principle be selected according to the requirements.
• the person skilled in a number of suitable technical devices are known. This can for example be a on the main body or
• Housing element present and partially protruding from the opening tubular Beigabe Georgia can be embraced in this case, for example, by one or more arranged on the toggle mechanism brackets and pressed in tensioning the toggle mechanism in the axial direction into the opening.
• one or more arranged on the toggle mechanism brackets and pressed in tensioning the toggle mechanism in the axial direction into the opening can be embraced in this case, for example, by one or more arranged on the toggle mechanism brackets and pressed in tensioning the toggle mechanism in the axial direction into the opening.
• Federspannmechanismus provide, in which one or more fastened to the housing member and biased springs, the tubular
• the main body preferably has a screw thread in the region of an outside, in particular an external thread.
• the sealing support in the base body and the Beigabe touch are dimensioned so that the Beigabe seven protrudes from the passage opening of the body out of concern when applied to the sealing pad, so that in particular the protruding from the through hole end of Beigabe,000,000s can be encompassed by the nut.
• the union nut has a first hollow-cylindrical end with a screw thread extending in the direction of the longitudinal axis, in particular an internal thread.
• At the other end of the nut is located opposite the first end tapered and circular opening with advantage.
• a diameter of the tapered opening is advantageously at least as large, preferably larger, than the inner diameter of the conveying line of the tubular Beigabe expertss and / or at the same time less than a maximum dimension, in particular an outer diameter of the rohrformigen
• Beigabests at a front end This allows the union nut the tubular Beigabe Georgia include frontally and at the same time remains an optimal passage for the mixture to be pumped by the mixing device free.
• Housing element present and partially protruding from the opening rohrigige Beigabe brainstorm in a simple and reliable manner by a screw movement of the union nut in the opening of the
• the union nut may comprise a pipeline, a hose line and / or a shotcrete nozzle with a fastening flange arranged on the input side and be fluid-tight with the attachment
• the advantage is the at least one sealing support of the base body as a truncated cone lateral surface and / or a conically tapering surface
• the truncated cone lateral surface and / or the tapered surface are in particular rotationally symmetrical with respect to
• the truncated cone surface and / or the tapered surface measures with advantage 70 - 270 ° or a half opening angle, measured to the longitudinal axis or the axis of the conveying direction, from 35 - 135 °.
• Truncated cone surface which is designed as an outer conical surface, advantageously has an opening angle of 180 - 220 ° or a half opening angle of 90 - 1 10 ° (from the longitudinal axis or the axis of Conveying direction measured).
• a truncated cone surface which as
• Inner cone surface is formed, in particular has a
• Opening angle of 80 - 100 ° or half an opening angle of 40 - 50 ° (measured from the longitudinal axis or the axis of the conveying direction). If both an outer cone surface and an inner cone surface are present, there is a ratio of the opening angle of the outer cone surface to one
• Opening angle of the inner cone surface with advantage in the range of 1 .8 - 2.75. As has been shown this facilitates the centering of the axial seal of Beigabe conferencess in the body, which improves the overall tightness. This is particularly advantageous in combination with an axial seal in the form of a sealing lip with a wedge-shaped cross-section, which preferably also at least partially, particularly preferably completely, is spaced from the wall of Beigabespas.
• the sealing lip can move to a limited extent in the radial direction and be pressed even better to the sealing pad.
• Tightness can be further improved.
• a further sealing support arranged in the base body for a further sealing element present on the beige piece and designed as an axial seal.
• Shotcrete composition an advantage.
• a radial seal integrated in the main body may also be provided, e.g. an O-ring. In this case, however, the handling may be difficult.
• a minimum diameter of the at least one sealing pad is greater than a minimum diameter of the further sealing pad. This allows the inclusion of a Beigabe Georgias described above with two different sized axial seals. For different
• the at least one sealing support is preferred as one
• Inner cone surface is formed and / or the further sealing pad formed as an outer conical surface. If the Beigabe Georgia present in the housing element between the two axial seals from the outside pressurized, acts on the axial seals radially outwardly and / or inwardly directed force. Due to the configuration of the two sealing surfaces, an associated deflection of the axial seals in the radial direction is effectively reduced or the tightness of the axial seals is additionally increased due to the additional contact forces in the radial direction.
• metals, plastics or composite materials with or without fiber reinforcement come into question as material for the housing element and / or the base body.
• metal for example, stainless steel and / or aluminum is suitable.
• the housing element is particularly advantageous from a plastic, in particular polyoxymethylene copolymer, hereinafter called POM-C.
• POM-C polyoxymethylene copolymer
• Under POM-C is in particular a commercially available from various suppliers polymer based on a structural unit having the formula - [(CH 2 -O) n - (CH 2 -CH 2 -O-) m ] to understand. This can reduce the weight of the
• Housing element are kept low and at the same time is a high ensures mechanical and chemical stability, especially in connection with pumpable hydraulically setting mixtures, in particular wet, humid or dry
• Shotcrete compositions is advantageous. Housing elements made of plastic can also be relatively inexpensive to produce metals or composites, for example by Glessen.
• both the base body and the nut each in one piece of a plastic, in particular POM-C made.
• the passage opening in the housing element is in particular designed so that the Beigabe scholar at least partially in the
• Passage opening can be included.
• Fig. 1 is a hollow cylindrical Beigabe Sharing with two designed as axial seals sealing lips in a perspective view;
• Fig. 2 is a longitudinal section along the line A - B through the Beigabe Georgia of Fig. 1;
• Fig. 3 A housing element with two frustoconical surfaces as
• Sealing pads and a cap nut as a means for applying a force acting in the axial direction and / or longitudinal direction of the Beigabe Wunschs force;
• Delivery hose and a shotcrete nozzle is connected;
• Fig. 5 shows a variant of the hollow cylindrical Beigabe Sharings of Fig. 1 with a cast-annular reinforcing element in the region between the two sealing lips in a longitudinal section.
• Beigabe mosaic 100 has a hollow cylindrical body 102 with a along the longitudinal axis 101 .2 extending circular cylindrical passage 101, which extends completely through the body 102 and serves as a mixing section or delivery line for a pumpable mixture.
• a circumferential flange 105 is disposed on the base body 102. At the other end of the body 102 facing front surface of the flange 105 is an annular circumferential and rotationally symmetrical to the longitudinal axis 101 .2 formed first sealing lip 1 10 arranged as a sealing element.
• the first sealing lip 1 10 is as
• Axial seal designed and has in a direction away from the end face of the flange 105 has a wedge-shaped tapered cross-section.
• a wedge angle 1 1 1 1 .1 of the first sealing lip 1 10 is for example about 30 Q.
• the sealing lip merges seamlessly into the outer lateral surface of the flange 105.
• a region of the free end 1 1 1 of the first sealing lip 1 10 or a region of the wedge tip is convexly curved and forms a sealing edge of the sealing lip 1 10.
• the sealing lip 1 10 is also spaced from the wall of the body 102 in the radial direction, so that between the wall of the
• Base 102 and the sealing lip 1 10 a first circumferential groove 1 12 is present with a concave curved boundary surface.
• the tubular Beigabe Georgia 100 has a step-like taper or a radially tapering taper, on which a further sealing element in the form of another circumferential sealing lip 120 is arranged.
• the second sealing lip 120 is designed as an axial seal, has a wedge-shaped
• the further sealing lip 120 is substantially the same design and oriented as the first sealing lip 1 10. Accordingly, the second sealing lip 120 has a wedge angle 121 .1 of eg about 30 Q and a range of free end 121 of the further sealing lip 120 forms a convexly curved sealing edge.
• the further sealing lip 120 is further spaced apart in the radial direction from the wall of the base body 102, so that between the wall of the base body 102 and the further sealing lip 120 there is a further circumferential groove 121 with a concavely curved boundary surface.
• the further sealing lip 120 merges seamlessly into the wall of the hollow cylindrical main body 102.
• hollow cylindrical body 102 introduced. These serve to introduce an additive into the circular cylindrical passage 101 which is intended as a mixing section. It can, for example, 4 or 8 openings
• the outer diameter is 120.1 of the other
• An inner diameter 101 .1 of the Beigabe Georgias 100 is for example about 60 mm.
• the tubular Beigabe Trading 100 is in particular made completely in one piece from a plastic.
• a plastic for example, polyurethane with a hardness of about 50-120 Shore A, for example 75 Shore A or 90 Shore A, is suitable as the plastic.
• Fig. 3 shows a longitudinal section through an inventive
• Housing element 200 which comprises a tubular body 225 with a central passage opening 201.
• the passage opening 201 extends completely from the first end 230 to a second end 240 along a longitudinal central axis 201 .1 through the main body 225.
• the passage opening 201 is subdivided into a plurality of regions with different inner diameters, wherein all regions are configured rotationally symmetrical with respect to the longitudinal central axis 201 .1.
• Passage opening 201 conical.
• the portion beginning at the first end 230 of the passage opening 201 is designed as a truncated cone surface or inner cone surface 210.
• the inner cone surface 210 serves as a sealing support for an axial seal in the base body 225
• An opening angle of the inner conical surface 210 measures, for example, about 90 Q (measured 45 ° from the longitudinal center axis).
• the inner cone surface 210 is adjoined by a first hollow cylindrical section 202 with a constant inner diameter, which merges via a conical intermediate region 203 into a second hollow cylindrical section 204 with an enlarged inner diameter.
• the second hollow cylindrical section 204 then opens into a third hollow cylindrical section 205.
• the transition between the second and the third hollow cylindrical section is stepwise as
• Truncated cone surface or outer cone surface 220 formed, which serves as a further sealing support for a further axial seal of a recorded in the base body 225 Beigabe Georgias. An opening angle of
• Outer cone surface 220 measures, for example, about 200 Q (measured 100 ° from the longitudinal axis).
• the third hollow-cylindrical section 205 finally merges into a diameter-widened connection region 206.
• Terminal area 206 is e.g. designed for connecting a delivery pipe or a delivery hose.
• two radial bores 213 a, 213 b also open out of diametrically opposite directions as supply lines for introducing an additive into the passage opening 201.
• One bore 213a is closed, for example, by a closure cap 402, while a hose line or a tube 401 is connected to the other bore 213b via a curved connecting piece 400.
• both holes 213a, 213b can also be equipped with a connecting piece 400.
• An inner diameter 202. 1 of the first hollow-cylindrical section 202 which corresponds to a minimum diameter of the inner cone surface 210, is larger than an inner diameter 205. 1 of the third hollow-cylindrical section 205, which corresponds to the minimum diameter of the outer conical surface 220.
• the minimum diameter of the further sealing support is thus smaller than the minimum diameter of the first sealing support (inner conical surface 210) in FIG
• an external thread 250 is furthermore introduced into the base body 225.
• On the external thread 250 is a
• the union nut 300 has a first hollow-cylindrical end with an internal thread 301 extending in the direction of the longitudinal axis. At the other end of the union nut is opposite the first end step-like tapered circular cylindrical opening 302. As a result, in the interior of the union nut 300 there is a disk-shaped end face 303 adjoining the opening 302, which is provided as a contact surface for a beige piece and / or further tubular elements. A diameter 302. 1 of the opening is smaller than a diameter of the internal thread 301.
• External thread 250 of the body 225 can be the union nut in the axial direction or in the direction of the longitudinal axis 201 .1 relative to the
• the main body 225 and the union nut 300 are advantageously each made in one piece from plastic.
• a plastic for example POM-C is suitable.
• the loading piece 100 and the housing element 200 together form a set of equipment.
• a distance between the two sealing edges 1 1 1, 121 on Beigabe Georgia 100 corresponds substantially to a distance of the two sealing pads 210, 220 on the housing element 200.
• Beigabefelds 100 between the two sealing lips 1 10, 120 is also less than the inner diameter in the first two
• the Beigabe Georgia 100 can be received in the radial direction with play in the passage opening 201.
• FIG. 4 shows an arrangement comprising the housing element 200 from FIG. 3 with the enclosed piece 100 taken in from FIGS. 1-2 in a longitudinal section.
• This arrangement corresponds to a mixing device for the controlled metered addition of an additive into a pumpable hydraulically setting mixture, in particular into a wet, dry or dry shotcrete composition.
• the first sealing lip 1 10 of the Beigabe conferencess 100 lies with its free end 1 1 1 and the sealing edge on the inner cone surface 210 of the base body 225.
• the further sealing lip 120 of the Beigabespas 100 with its free end 121 and the sealing edge on the outer conical surface 220 of
• an open end of a delivery tube or delivery tube 500 equipped with a coupling device is also connected in a manner known per se. Via the conveying pipe or the conveying hose 500, a pumpable mixture, for example a shotcrete composition, can be conveyed into the loading piece 100.
• Delivery hose 500 substantially corresponds to the inner diameter 101 .1 of the tubular Beigabe Sharings 100th
• FIG. 5 shows a further tubular insert piece 800 according to the invention in cross-section.
• This is substantially identical to the Beigabe Georgia 100 of FIGS. 1 and 2, but has in a region between the two sealing elements 810, 820 additionally via a reinforcing element 850.
• the reinforcing element 850 is formed as a steel ring and completely in the wall of the tubular Beigabe Industriess 800 embedded or poured.
• a length of the reinforcing member in the axial direction measures about 17% of the total length of the beige body 800 in the axial direction.
• Union nut 300 is pushed over the shotcrete nozzle 600 until the inlet-side flange 601 abuts against the disk-shaped end face 303 of the union nut. Subsequently or at the same time, the tubular attachment piece 100 is inserted from the first end 230 into the passage opening 201 of the housing element 200 until the two sealing lips 1 10, 120 abut against the respective sealing supports 210, 220 in the base body 225.
• the delivery pipe or hose 500 may be connected at any time regardless of the other components. For the replacement or removal of the Beigabe Georgias 100 is the
• the housing element 200 (FIG. 3) made of POM-C was equipped with a loading piece 100 (FIGS. 1-2) made of polyurethane with a hardness of about 90 Shore A.
• the connection region 206 and the opening 302 of the union nut 300 were each sealed fluid-tight with a blind flange.
• pressurized water was supplied via the connecting piece 400 and the water pressure was increased continuously.
• compressive strengths of the arrangement of up to 50 - 60 bar have been found before by expansion of the material of the nut 300, a pressure relief has taken place.
• Neither the union nut 300 nor the connection area 206 were damaged, so that the experiments were repeatable several times. This is particularly advantageous in terms of occupational safety, since there is no risk that the housing element or the Beigabe Sharing breaks up and is torn apart, which could cause personal injury.
• Sealing system can be detected at about 10 bar.
• the sealing system is tight up to a pressure of about 10 bar.
• leaks have only resulted in about 30 bar.
• this sealing system is even tight up to a pressure of about 30 bar.
• the admixtures 100 (FIGS. 1-2) and 800 (FIG. 5) of 75 and 90 Shore A hardness polyurethane and the POM-C housing elements 200 (FIG. 3) have also been used in conventional dispensing applications Sprayed concrete tested under different conditions.
• the devices according to the invention are at least as suitable for applying shotcrete as conventional systems which
• the sealing lips 1 10, 120 are replaced by an O-ring in the addition piece 100 from FIGS.
• the O-ring for example, be arranged adjacent to the end face of the flange 105.
• sealing lips 1 10, 120 further sealing elements, in particular further sealing lips to install.
• conventional radial seals can also be provided. This makes it possible to further improve the sealing effect and / or to realize a separate metering of different additives at different positions in the axial direction of the loading piece.
• openings 103 it is also possible, in addition to or instead of the openings 103, to provide further or otherwise formed openings, for example slots, in the wall of the beige piece.
• housing element 200 from FIG. 3, it is also conceivable, for example, to replace the inner cone surface 210 and / or the outer conical surface 220 by flat annular surfaces, in order in particular to simplify the manufacture of the housing.
• the housing element 200 instead of or in addition to the radial bores 213a, 213b via further or differently configured
• the mixing section 101 of the loading piece 100 and / or the passage opening 201 of the housing element 200 may also have a tapered cross-section. This can be used, for example, to realize a
• the Beigabe Georgia 100, the base body 225 and / or the union nut 300 partially or completely made of a material other than plastic, e.g. made of steel and / or aluminum.
• Beigabetries 100 can be used in the equipment set, the arrangement of FIG. 4 or in the assembly / disassembly process, the tubular Beigabe mosaic 800 of FIG. 5.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Structural Engineering (AREA)
• Mechanical Engineering (AREA)
• Civil Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Lining And Supports For Tunnels (AREA)
• Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
• Gasket Seals (AREA)
• Accessories For Mixers (AREA)
• Closures For Containers (AREA)
• Coating Apparatus (AREA)
• On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

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• 2011
  • 2011-01-12 EP EP11150748A patent/EP2476530A1/fr not_active Withdrawn
• 2012
  • 2012-01-12 WO PCT/EP2012/050416 patent/WO2012095480A1/fr active Application Filing
  • 2012-01-12 US US13/978,265 patent/US10160138B2/en active Active
  • 2012-01-12 CN CN201280005174.6A patent/CN103328170B/zh not_active Expired - Fee Related
  • 2012-01-12 JP JP2013548839A patent/JP6001556B2/ja active Active
  • 2012-01-12 BR BR112013017486A patent/BR112013017486A2/pt active Search and Examination
  • 2012-01-12 CA CA2824228A patent/CA2824228C/fr active Active
  • 2012-01-12 MX MX2013008041A patent/MX347222B/es active IP Right Grant
  • 2012-01-12 AU AU2012206572A patent/AU2012206572B2/en active Active
  • 2012-01-12 EP EP12708691.6A patent/EP2663435B1/fr active Active
• 2013
  • 2013-07-10 CL CL2013002017A patent/CL2013002017A1/es unknown

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