Suction nozzle, jet suction box and jet suction method

Abstract

The invention relates to a suction nozzle for a hollow-jet suction box and to a method for suctioning a liquid jet, in particular a water jet. The suction box has at least one slit-like housing opening on its box housing, which leads to its box interior, wherein the suction nozzle has a nozzle body, which can be arranged above the housing opening, and a slit-like suction opening, which runs through the nozzle body in the direction of the suction flow, the suction opening having an outwardly directed inlet side and an outlet side for the suction flow. The suction opening extends from the inlet side at the free end of the nozzle body to the outlet side, which can be arranged on the housing opening of the box housing. The nozzle body has at least one movable, preferably strip-shaped, sealing element at the inlet side, which is arranged next to the suction opening and laterally delimits the slit-like suction opening, and at least one elastic expansion device acting on the sealing element, which is configured to press the sealing element outwardly against the direction of the suction flow from the outlet side.

Description

Technical Field

[0001] This invention relates to a suction nozzle, a suction box for a suction device of a device for water jet consolidation of fiber material webs, and a jet suction method. Background Technology

[0002] Such a suction nozzle, along with a jet suction box and a jet suction method, is known from patent document WO2020 / 120412A1.

[0003] Patent document EP1059377A1 discloses another suction nozzle together with a jet suction box and a jet suction method. Summary of the Invention

[0004] The purpose of this invention is to provide an improved jet suction technology.

[0005] The objective of this invention is achieved through the technical solution according to this invention.

[0006] The claimed jet suction technology, namely, the nozzle, the jet suction box equipped with the nozzle, the jet suction method, the suction device, and the equipment for water jet consolidation equipped with the suction device, has different advantages.

[0007] A first aspect of the invention provides a nozzle for a hollow jet suction box, the hollow jet suction box having at least one slit-shaped outer shell opening on its outer shell leading to its internal space, wherein the nozzle has a nozzle body disposed above the outer shell opening and a slit-shaped suction opening penetrating the nozzle body in the suction flow direction, the suction opening having an outwardly pointing inlet side and an outlet side for suction flow. The suction opening extends from the inlet side at the free end of the nozzle body to an opposite outlet side, the outlet side being configured and arranged for arrangement on the outer shell opening of the outer shell.

[0008] The nozzle body has at least one movable, preferably strip-shaped sealing element arranged next to and laterally defining a slit-shaped suction opening on the inlet side, and an elastically telescopic extension device acting on the sealing element, the extension device being configured to push the sealing element outward from the outlet side, or from the housing opening, against the direction of the suction flow.

[0009] The suction nozzle can be used to draw in a liquid jet in the form of a suction flow emitted from and re-flowing from a web of fibrous material by a consolidation device used for liquid jet consolidation, particularly water jet consolidation, of a movable web of fibrous material. The direction of the suction flow can be aligned with the direction of emission of the liquid jet, especially the water jet.

[0010] Another aspect of the invention provides a jet suction box for a suction device in a consolidation apparatus for liquid jet consolidation, particularly water jet consolidation, of a moving fibrous material web, especially a nonwoven fabric. The jet suction box draws in the form of a suction flow from the consolidation apparatus and flowing out again from the fibrous material web. The hollow jet suction box has at least one slit-shaped opening in its outer shell leading to its interior space. At least one suction nozzle is arranged on the outer shell, having a nozzle body disposed above the outer shell opening and a slit-shaped suction opening penetrating the nozzle body in the suction flow direction. The inlet side of the suction opening points outward, and the outlet side points towards the outer shell opening. The nozzle is constructed in the claimed manner.

[0011] One or more nozzles, correspondingly positionable or positioned on the jet suction box, can draw in the form of a suction flow the liquid jet emitted by the consolidation device and flowing out again from the fibrous material web. One or more nozzles on the jet suction box can also utilize their suction flow to additionally dehumidify the fibrous material web without drawing in the liquid jet.

[0012] At least one movable sealing element can be movably arranged along and against the suction flow direction and guided as necessary. This movable arrangement and, if necessary, guidance can be translational and / or rotational. The at least one sealing element can also be movably arranged transversely to the suction flow direction and is adjustable, for example, for adjusting the nozzle width. A resiliently telescopic extension device can act on the associated sealing element and can move and drive the sealing element against the suction flow direction. The construction and kinematics of the movable sealing element and the resiliently telescopic extension device can be varied.

[0013] Another aspect of the invention relates to a method for inhaling such emitted liquid jets.

[0014] The nozzle, possessing the claimed construction and function, can be a separate component, which can be mounted on an existing jet suction box, for example, by addition or modification. These existing jet suction boxes do not necessarily need to be constructed and arranged in the manner claimed. Therefore, older jet suction boxes of different designs can be modernized, for example. For instance, additions or modifications can be made to jet suction boxes according to the document mentioned at the beginning.

[0015] The jet suction box that is to be protected can be a separate component of the suction device, and, if necessary, a separate component of a liquid jet consolidation device, particularly a water jet consolidation device, equipped with the suction device. The jet suction box can be added to or modified from an existing suction device. It can also be an original component of a new suction device. Furthermore, the jet suction box and suction device can be part of a consolidation device used for liquid jet consolidation, particularly water jet consolidation, of moving fibrous material webs, particularly nonwoven fabrics.

[0016] The claimed jet suction technology offers greater efficiency, economy, sustainability, and flexibility. This technology enables a better seal between the jet suction box and the moving product web conveyor due to one or more movable sealing elements and their resiliently telescopic extension devices on the corresponding nozzles. Any imbalances, assembly, and design tolerances between the conveyor and the jet suction box can be compensated for. Falschluft (false air) can be reliably prevented from entering the suction opening, particularly from the inner cavity of the roller-shaped conveyor.

[0017] This also leads to better and more consistent consolidation results when using high-pressure liquid jets, especially high-pressure water jets, to consolidate fiber webs. The drawn-in air / liquid mixture has a higher liquid content. It can be regenerated better and more effectively, especially for the recycling and reuse of liquid at the consolidation equipment. Furthermore, it is also beneficial for the effective dehumidification of the fiber web.

[0018] The pressure loss at the jet suction box can be kept at an extremely low level, enabling the use of weaker suction and pumping techniques and improving control precision. Energy and construction costs can be significantly reduced. This improves process quality, efficiency, and economy while saving resources. Noise emissions can be significantly reduced. The higher the flow velocity at the nozzle outlet and the higher the suction velocity of the air / liquid mixture from the hollow box cavity, the greater the positive effects of the protected jet suction technology.

[0019] In one embodiment, the nozzle may have a movable sealing element on one side of a preferably slit-shaped suction opening, and a fixed nozzle body wall on the other side of the suction opening. In another preferred embodiment, the nozzle may have multiple, particularly two, movable sealing elements, each having one or more elastically telescopic extension devices arranged on either side of the slit-shaped suction opening. These one or more movable sealing elements are arranged at the free end of the nozzle body, forming a free body end.

[0020] One or more movable sealing elements may extend along the suction opening in a direction transverse to the suction flow direction. One or more movable sealing elements may also extend at least partially along the suction flow direction.

[0021] The movable sealing elements arranged on both sides of the slit-shaped suction opening each have a sidewall that points toward and laterally defines the suction opening, wherein the sealing elements on both sides define the suction opening on the inlet side between them.

[0022] A strip design for one or more sealing elements is advantageous. These sealing elements preferably extend along the entire length of the suction opening. The strip design can be an axially continuous one-piece design or a segmented design.

[0023] At least one, preferably strip-shaped, sealing element can be constructed and guided in various ways. The nozzle body may have a guiding device for at least one movable sealing element. This guiding device may include a guide member designed and arranged accordingly for guiding the task. The guiding device may be, for example, a guide rod with a guiding opening (e.g., an elongated hole), and / or one or more leaf springs.

[0024] The sealing element can, for example, be configured to be loose and independently movable. Here, the sealing element can be movably guided along and against the suction flow direction by a guiding device (e.g., a guide rod including a guide opening) having a preferably rigid guide. The movement of the seal can be translational and / or rotational. The rigid guide can extend along the suction flow direction. The movement of the seal can be, in particular, a linear displacement. An elastically extendable extension device can, for example, act directly on the sealing element.

[0025] In another design, the sealing element can be mounted on a movable, particularly deformable, guide of the guiding device. The movable guide can extend primarily transversely to the direction of the suction flow. For example, a guide configured as a leaf spring can be movablely guided in a suitable manner (e.g., rotation) along and against the direction of the suction flow, particularly by pivoting motion. An elastically extendable extension device can be engaged with the guide and thereby act indirectly on the sealing element.

[0026] One or more sealing elements are provided and constructed to fit tightly against the conveyor, particularly against a rotating conveyor roller, and are elastically compressed by an extension device. The one or more sealing elements may be configured to favor friction, at least in the contact and abutment areas. They may have a correspondingly adapted external geometry, such as rounded or beveled, and / or may be made of a low-friction material.

[0027] Single or multiple resiliently extendable extension devices can be constructed in various ways. They may include, for example, one or more pressure springs, particularly bolt pressure springs. These pressure springs can be tensioned on or within the conveyor when assembling the jet suction box. Such pressure springs can be constructed as mechanical springs, compressible solids, compressible fluids (e.g., air cushions, gas springs, etc.), or other forms.

[0028] The resiliently extendable extension device can also be configured to be switchable and / or controllably extendable. For this purpose, the resiliently extendable extension device can operate, for example, via a switchable or controllably extendable, and if necessary, adjustable, preferably compressible pressure medium, such as compressed gas. Here, the resiliently extendable extension device can, for example, have an extender that operates via a compressible pressure medium, which is stretched by said pressure medium. This extender can, for example, include a gas-driven plunger and / or an inflatable pressure hose, pressure bellows, etc.

[0029] The advantages of this switchable and / or controllable design of the resiliently telescopic extension device are: better adaptability to operating conditions on the conveyor, especially in rotating conveyor rollers. Furthermore, the resiliently telescopic extension device can be closed or its function reduced, so that one or more loaded sealing elements are no longer held against the conveyor by spring force. This is advantageous for the low-resistance removal and installation of the jet suction box and / or one or more nozzles with their suction bodies and sealing elements on the conveyor. Additionally, the extension force or spring force can be specifically adjusted according to varying suction pressures, and particularly for high suction pressures, such as up to 250 mbar.

[0030] The claimed jet suction technology also allows for the variation and adjustment of the width of the preferred slit-shaped suction opening. This allows the opening width to be optimally adapted to the corresponding operating conditions and process requirements.

[0031] A particularly advantageous feature is the movable arrangement of at least one sealing element on the nozzle body, thereby enabling the sealing element to move laterally and, if necessary, transversely to the suction flow direction. The width adjustment of the suction opening can thus be achieved within the region of this at least one sealing element. This region is located near the inlet side of the suction opening and is arranged on the conveyor. The downstream-facing area of ​​the suction opening does not need to be affected by adjustment and can have a constant opening width. Adjustability is merely a possible alternative.

[0032] Advantageous for the suction process is that the width of the suction opening is adjustable primarily on the inlet side, while the opening width remains constant on the outlet side and at the outer shell opening. This also facilitates access to adjustment mechanisms for one or more movable sealing elements. The adjustment mechanism may include at least one actuating element arranged in the slit-like suction opening and accessible from the outside on the inlet side. This actuating element may, for example, be configured as a variable-length adjusting bolt, which can be adjusted using a tool inserted into the suction opening.

[0033] The nozzle body can be movably, and in particular displaceably, arranged on the housing shell by means of a retainer. Thus, the nozzle body can at least partially exit from the cover having an opening in the housing. This movement is particularly axial and along the main axis of the jet suction box. The switchable and / or controllable design of the elastically retractable extension device helps to reduce frictional resistance.

[0034] The retainer can be constructed as a slit, oriented along the suction opening and, if necessary, along the outer casing opening. Thus, the nozzle body can be displaced within the retainer and withdrawn from the casing, for example, by means of a handle. Consequently, the nozzle body can also be pulled away from the cover along with the conveyor, particularly from the conveyor rollers. Thus, the nozzle body and adjustment device are freely accessible and can be operated particularly easily and precisely. On the other hand, the nozzle body can be precisely positioned on the casing by the retainer in a predetermined operating position. A switchable and / or controllable resilient telescopic extension device is advantageous for adjusting the opening width.

[0035] The nozzle body may have an opening edge limiter at one or both end faces of the preferably slit-shaped suction opening and on at least one movable seal, which is preferably adjustable. This allows the effective opening length of the suction opening to be adjusted and varied as needed. This is advantageous, for example, for accommodating different widths of fibrous material webs. Furthermore, the opening edge limiter also allows for the definition and sealing of the end faces of the suction opening in the area of ​​at least one movable sealing element. Particularly advantageously, the opening edge limiter includes an adjustable slider that closes the suction opening at both the edge and end faces, and this slider is guided on at least one movable sealing element. During the movement of at least one sealing element along the suction flow direction, the opening edge limiter can move accordingly.

[0036] The nozzle body includes the aforementioned guiding device for at least one sealing element. This guiding device guides the sealing element as it moves along the suction flow direction and, if necessary, laterally to the suction flow direction.

[0037] The guiding device can be constructed in the manner described above. For example, the guiding device can be constructed as a rigid rod-type guide or a cage-type guide with preferably linear guiding kinematics.

[0038] Another design for a spring-loaded pivoting guide offers particular advantages. The guiding device may include a guide configured as a leaf spring clamped on one edge, preferably securely mounted and fastened to the at least one sealing element on the opposite edge without loss of stability. A preferably controllable or switchable resilient telescopic extension device can act on the leaf spring and bend it. This design is particularly advantageous for applications requiring high extension force. The return of the extension device upon release can be achieved by the restoring force of the deformed leaf spring. This design of the nozzle, or rather its nozzle body, is also advantageous for retrofitting conventional suction boxes.

[0039] There are various possibilities for the structural design of the nozzle body. The nozzle body may, for example, have a hollow base on which at least one movable sealing element is arranged. This hollow base can be constructed as a single piece or multiple pieces. It is penetrated by a suction opening. An elastically telescopic extension device can be arranged between the base and the at least one movable sealing element. A guiding device can also be arranged between the base and the at least one movable sealing element.

[0040] The base can space the at least one movable sealing element and associated resilient telescopic extension device radially or normally from the housing. It can have different dimensions. This allows for adjustments to be made according to different installation specifications of the existing jet suction box when adding or modifying the suction nozzle.

[0041] In an advantageous embodiment, the hollow base may include a support element and at least one load-bearing element that can be arranged or disposed over the housing opening, wherein the at least one load-bearing element is disposed between the support element and at least one movable sealing element.

[0042] The supporting element and the associated sealing element can be interconnected. At least one movable sealing element can be movably arranged on or guided along the suction flow direction on and at least one associated supporting element. An elastically telescopic extension device can be supported on at least one supporting element and can act directly or indirectly on the associated sealing element.

[0043] At least one movable sealing element may be arranged on and above the associated support element. It may be configured to be loose and independently movable. It may float above the associated support element and may be supported by an elastically telescopic extension device along the suction flow direction. The inner sides of the at least one movable sealing element and the associated support element pointing towards the suction opening may be flush with each other along the suction flow direction. These inner sides may form, for example, parallel sidewalls of an integral funnel-shaped suction opening in this region.

[0044] At least one movable sealing element and the associated carrying element can also be flush with each other on the outer side opposite to the suction opening along the suction flow direction.

[0045] In another embodiment, at least one movable sealing element may also be arranged in or on the associated carrier element and protrude outward from the carrier element against the direction of suction flow.

[0046] At least one movable sealing element and at least one associated support element can be movably arranged and guided together transversely to the suction flow direction. Thus, they can move and adjust relative to each other, for example, when adjusting the width of the suction opening. In another variation, for example using the leaf spring, at least one sealing element can be adjusted relative to the support element, particularly relative to the support element, and transversely to the suction flow direction.

[0047] The support element located between the housing opening and at least one carrier element can maintain its position and configuration in the different variations described above and does not need to follow. The carrier element can also be omitted. The movement and guidance of one or more sealing elements, and, if necessary, the carrier element, transverse to the suction flow direction, can be performed relative to the stationary support element.

[0048] The guiding device may include guide elements of appropriate construction and arrangement for the aforementioned guiding task. Furthermore, resiliently telescopic sealing baffles may be arranged on the outer side of at least one load-bearing element and at least one movable sealing element. These baffles can cover the gaps between these elements.

[0049] The support element can be constructed in different ways. In an advantageous design, the support element has a support cone with sealed cone walls and a cone bottom through which suction flow is permeable. The support cone can point its larger cone opening toward the outlet side of the suction opening or toward the outer shell opening of the housing. The support element, particularly the support cone, can be provided and constructed to contact and, if necessary, engage with the retainer of the aforementioned nozzle body on the housing. This engagement can be achieved in a fluid-tight manner.

[0050] The nozzle body can have closed sidewalls and closed endwalls. The sidewalls can be formed by support elements, particularly support cones. Thus, the nozzle body is constructed to be completely sealed on both the inlet and outlet sides, except for the mouthpiece of the suction opening. On the end side, the nozzle body can have a handle by which the nozzle body can be moved on the retainer.

[0051] Preferably, a slit-shaped suction opening is formed in the nozzle body, extending from the inlet side to the outlet side along the suction flow direction and extending thereto into the outer shell opening. The cross-sectional width of the slit-shaped suction opening can increase from the inlet side to the outlet side. This increase can be continuous or stepwise. The width of the suction opening on the inlet side is smaller than its width on the outlet side. By increasing the nozzle width in both the suction flow direction and the jet direction of the liquid jet, the pressure loss on the outlet side can be kept very low. The cross-section of the suction opening can have the aforementioned inverted funnel shape.

[0052] Due to the very low pressure loss, a moderate negative pressure within the chamber and a small-sized negative pressure generator are suitable for achieving the desired negative pressure at the inlet side of the nozzle. This also facilitates achieving the desired flow velocity at the nozzle and at the suction opening of the jet suction chamber. This negative pressure can be, for example, 15000 Pa or 150 mbar or more. The flow velocity can be, for example, 25 m / s. For the claimed jet suction technology, it is suitable that the nozzle and its slit-like suction opening, along with at least one movable sealing element, are oriented along the suction chamber axis. Here, they can be oriented transversely to the direction of movement of the fiber material web. The suction chamber axis can be the longitudinal axis of the suction chamber.

[0053] The suction nozzle can be positioned opposite the ejector along the firing direction in the installation position, and the ejector emits a liquid jet, particularly a water jet, under pressure. The suction nozzle and the slit-shaped suction opening can preferably extend across the entire width of the fibrous material web, and, if necessary, also across the entire width of the ejector.

[0054] The jet suction box may have multiple suction nozzles arranged circumferentially on its outer shell. The number and arrangement of the suction nozzles can be adapted to the number and arrangement of the ejectors. In addition, one or more additional suction nozzles may exist without being associated with an ejector.

[0055] By employing the claimed jet suction technology, and particularly through a suitable suction nozzle, the emitted liquid and ambient air brought in by the jet from the outside of the fibrous material web can be received particularly well and effectively, and discharged through a jet suction box. Thus, the fibrous material web being jettisoned is both consolidated particularly effectively and wetted as little as possible.

[0056] For fibrous webs, subsequent drying costs can be very low, thereby reducing resource consumption and improving efficiency or economy. Direct and targeted suction of the emitted liquid jet through one or more nozzles helps to guide the liquid jet in the best possible bundle and avoid eddies. These eddies, for example, can occur due to the aforementioned dummy air and can negatively impact process quality, particularly consolidation quality. At least one sealing element can particularly effectively prevent such eddies caused by dummy air. The liquid jet and liquid input are largely removed at the nozzle. Other nozzles without attached ejectors can additionally remove any residual liquid that may remain in the fibrous web.

[0057] The jet suction box can be constructed in different ways. In an advantageous embodiment, it is constructed as a straight jet suction pipe having a preferably at least partially rotationally symmetric cross-section. This jet suction pipe may have a casing having at least a partially prismatic shape on its outer side and at least one flattened portion in the region of at least one casing opening. A suction nozzle body disposed above the casing opening can extend from the casing, particularly in the radial direction. Multiple support struts can be arranged in the slit-like casing opening on the casing. They may have a preferably frame-like arrangement. These support struts stabilize the casing in the region of the casing opening.

[0058] The jet suction box may have a suction opening preferably axially oriented. The suction flow can be discharged through this opening. The jet suction box can be connected to a negative pressure generator and, if necessary, a recovery device. A negative pressure relative to the environment may exist within the internal space of the jet suction box.

[0059] The jet suction box can be combined with a conveyor in various ways. It can be particularly arranged inside a rotating and perforated conveyor roller for webs of fibrous materials. This arrangement can be fixed in position relative to the moving conveyor, especially the rotating conveyor roller. In another variation, the conveyor can be constructed as a conveyor belt or otherwise. The jet suction box can have a support surface for the conveyor, especially for the conveyor roller.

[0060] The claimed suction device may include the claimed jet suction box. The suction device may also include a negative pressure generator connected to the jet suction box. Connection. The suction device may also have the aforementioned recovery device for suctioning the liquid contained in the stream, particularly the water contained therein. The suction device may include the aforementioned liquid-permeable, particularly perforated, conveying member for the fibrous material web. This conveying member may, for example, be a rotary-driven conveying roller. The suction device may be arranged on one or more of the aforementioned ejectors. Here, the jet suction box may be arranged below the conveying member for the fibrous material web along the emission direction of the liquid jet, particularly the water jet. It may be arranged particularly inside the rotary-driven conveying roller.

[0061] The claimed consolidation apparatus for consolidating fibrous material webs using liquid jets, particularly water jets, may include the claimed jet suction box and the claimed suction device. It may also include one or more ejectors and a transport device for the fibrous material web.

[0062] The claimed jet suction box, suction device, and suction method have particular advantages for the jet consolidation, especially water jet consolidation, of fibrous material webs. However, they can also be used without such jet consolidation and without suction of the liquid jet, for example, for dehumidifying wet fibrous material webs.

[0063] Other preferred designs of the invention are provided below.

[0064] The claimed nozzle, the claimed jet suction box, the claimed suction device, the claimed consolidation equipment, and the claimed suction method may have further embodiments, which may be used individually or in combination.

[0065] The following design options are available for the jet suction box and nozzle that require protection.

[0066] At least one movable sealing element can be adjusted laterally to the direction of the suction flow by means of an adjusting device. Here, the width of the slit-shaped suction opening can be varied.

[0067] The adjustment device may include at least one actuating element (Stellmittel) arranged in a slit-shaped suction opening and accessible from the outside from the inlet side.

[0068] In another embodiment, the adjustment device may include at least one actuating element, such as a clamp with one or more bolts, which can clamp the leaf spring onto the bearing element and, in the released state, can be adjusted transversely to the suction flow direction through one or more elongated holes.

[0069] The nozzle body may have a preferably adjustable opening edge limiter at one or both end faces of the slit-shaped housing opening and on at least one movable sealing device.

[0070] An opening edge limiter may include a slider that closes the suction opening on the edge and end sides and is guided on at least one movable sealing element.

[0071] The hollow base may include a support element and at least one carrier element that can be arranged above the housing opening. The carrier element may be arranged between the support element and at least one movable sealing element. The at least one movable sealing element may be movably arranged on and guided along the suction flow direction on the associated at least one carrier element.

[0072] At least one movable sealing element and at least one associated preferably strip-shaped carrier element may be movably arranged and guided together transversely to the direction of the suction flow.

[0073] The nozzle body may have a guide for at least one movable sealing element.

[0074] The guiding device may include a guide element disposed between at least one carrying element and a supporting element, which acts transversely to the direction of the suction flow.

[0075] The guiding device may include a guide element, such as one or more elongated holes, arranged between at least one load-bearing element and a leaf spring and acting transversely to the direction of the suction flow.

[0076] An elastically telescopic sealing baffle may be arranged on the outer side of at least one load-bearing element and at least one movable sealing element, the sealing baffle covering the gap between the load-bearing element and the sealing element.

[0077] The support element of the hollow base may have a support cone with a sealed cone wall and a cone bottom through which the suction flow can pass.

[0078] The nozzle body can have closed sidewalls and closed endwalls. It can also have a handle on the end side. The closed sidewalls can be formed by a sealed conical wall that supports the cone.

[0079] The width of the slit-shaped suction opening can increase from the inlet side to the outlet side.

[0080] The nozzle, slit-shaped suction opening, and at least one movable sealing element can be oriented along the suction box axis and transverse to the direction of movement of the fiber material web.

[0081] The nozzle and slit-shaped suction opening can preferably extend over the entire width or a portion of the width of the fibrous material web.

[0082] The nozzle can be arranged on the jet suction box such that the nozzle is opposite to the ejector that emits liquid jets, especially water jets, under pressure in the direction of emission.

[0083] The jet suction box may have multiple suction nozzles arranged circumferentially on its outer shell. These nozzles may be nozzles assigned to an injector that emits a pressurized liquid jet and / or other so-called nozzles not assigned to an injector.

[0084] The jet suction box can be constructed as a straight jet suction tube with a cross section that is preferably at least partially rotationally symmetric.

[0085] The jet suction tube may have an outer prismatic housing with a flattened portion in the area of ​​the housing opening, or an outer circumferentially rounded, particularly cylindrical housing.

[0086] The nozzle body can extend from the outer shell of the housing, particularly in the radial or normal direction.

[0087] In the slit-like opening of the jet suction box or the outer shell of the box, multiple support pillars can preferably be arranged in a frame-like manner.

[0088] The jet suction box may have a suction opening preferably in the axial direction.

[0089] There may be negative pressure relative to the environment in the hollow interior space of the jet suction box.

[0090] The jet suction box can be connected to a negative pressure generator and, if necessary, to a recovery device for the liquid contained in the jet, particularly the water contained therein.

[0091] The jet suction box can be configured to be arranged inside a rotating, perforated conveying roller for the web of fibrous material, and in particular, to be arranged in a fixed relative position.

[0092] The jet suction box may have a support surface for conveying the movement of fibrous material webs, particularly for rotating conveyor rollers.

[0093] The suction device requiring protection can be arranged on an injector that emits a liquid jet, particularly a water jet, under pressure, or can be designed for such an arrangement.

[0094] The consolidation equipment for which protection is sought may have a transport device for the web of fibrous material. Attached Figure Description

[0095] The invention is illustrated exemplaryly and schematically in the accompanying drawings. Wherein:

[0096] Figure 1A schematic diagram of a water jet consolidation device is shown, including a suction device, a jet suction box, and a fiber material web.

[0097] Figure 2 A perspective view of a jet suction box configured as a jet suction pipe is shown, which has a circumferentially rotating conveying roller.

[0098] Figure 3 and Figure 4 It shows according to Figure 1 A perspective view of a jet suction tube with an axially oriented suction nozzle.

[0099] Figure 5 A side view of the jet suction pipe is shown, which has a conveying roller shown in cross-section.

[0100] Figure 6 A top view of the jet suction tube is shown.

[0101] Figure 7 The central perspective longitudinal section view of the jet suction tube and nozzle is shown.

[0102] Figure 8 It shows according to Figure 6 The longitudinal section view of the jet suction tube and nozzle along section lines VIII-VIII.

[0103] Figure 9 A cross-sectional view of the jet suction tube and nozzle is shown.

[0104] Figure 10 A perspective end view of the suction nozzle is shown.

[0105] Figure 11 and Figure 12 Different perspective cross-sectional views of the suction nozzle are shown.

[0106] Figure 13 An enlarged perspective longitudinal section view of the end face of the jet suction tube and nozzle is shown.

[0107] Figure 14 Another cross-sectional perspective view of the suction nozzle is shown, and

[0108] Figures 15 to 20 Another implementation of the nozzle is illustrated in different diagrams.

[0109] The list of reference numerals in the attached figures is as follows:

[0110] 1: Equipment for water jet consolidation

[0111] 2: Fiber material web

[0112] 3: Injector, suction nozzle strip

[0113] 4: Liquid jet, water jet

[0114] 5: Transport equipment

[0115] 6: Suction device

[0116] 7: Negative pressure generator

[0117] 8: Recycling device

[0118] 9: Water Recirculation Device

[0119] 10: Air outlet

[0120] 11: Conveyor components

[0121] 12: Conveyor Roller

[0122] 13: Driver

[0123] 14: Jet suction box

[0124] 15: Jet suction tube

[0125] 16: Axis, box axis

[0126] 17: Internal space of the box

[0127] 18: Box outer shell

[0128] 19: Flattened part

[0129] 20: Shell opening

[0130] 21: Pillar

[0131] 22: Intermediate Space

[0132] 23: Suction nozzle

[0133] 23': Direction of suction flow

[0134] 23”: Another suction nozzle

[0135] 24: Suction nozzle body

[0136] 25: Suction opening

[0137] 26: Entrance side

[0138] 27: Export side

[0139] 28: Retaining parts

[0140] 29: Sealing elements

[0141] 29': Sealing element

[0142] 30: Base

[0143] 31: Load-bearing element

[0144] 31': Bearing element

[0145] 32: Support element

[0146] 33: Extension device

[0147] 33': Compression spring

[0148] 33”: Expander

[0149] 34: Adjustment device

[0150] 34': Control components

[0151] 35: Guiding device

[0152] 35': Longitudinal guide

[0153] 35”: Lateral guide

[0154] 36: Sealing baffle

[0155] 37: Supporting cone

[0156] 37': Conical wall

[0157] 37”: Base of the cone

[0158] 38: Sidewall

[0159] 38': End wall

[0160] 39: Opening edge limiter

[0161] 40: Slider

[0162] 40': Slider Guide

[0163] 40”: Protrusion

[0164] 41: Support surface

[0165] 42: Flange

[0166] 43: Suction opening

[0167] 44: Handle

[0168] 45: Leaf Spring

[0169] 46: Fasteners

[0170] 47: Clamping parts, clamping plates Detailed Implementation

[0171] This invention relates to a suction nozzle (23) and a jet suction box (14) equipped with the nozzle, and a method for jet suction of a high-pressure liquid jet (4) for a consolidation device (1) for liquid jet consolidation, particularly water jet consolidation. The invention also relates to a suction device (6) having such a jet suction box (14). Furthermore, the invention includes a consolidation device (1) having such a jet suction box (14) and a suction device (6). Additionally, the invention includes a method for liquid jet consolidation, particularly water jet consolidation, and a suction method. The invention also relates to dehumidifying a fibrous material web (2) by suction when the high-pressure liquid jet (4) is not being suctioned simultaneously.

[0172] Figure 1 A unit with, for example, three bonding devices (1) is shown, which use liquid jets (4), particularly water jets, to bond a moving web of fibrous material (2). The fibrous material web (2) is formed of textile fibers, particularly synthetic fibers. It is, for example, constructed as a nonwoven fabric. It is supplied to a transport device (5) by a generator device (not shown), such as a carding machine, a spinning tower or spunbonding tower, or an air-flow curtain. Here, other machines, such as nonwoven fabric laying machines, can be connected as needed. The transport device (5) may have an infinitely circulating and jet-permeable conveyor belt. The fibrous material web (2) can pass through the three bonding devices (1) sequentially.

[0173] The three consolidation devices (1) can be constructed to be of the same type. Each of them has one or more ejectors (3). Preferably, multiple ejectors (3) are dispersed and arranged sequentially along the conveying path along the conveying direction of the fiber material web (2).

[0174] The fiber material web (2) is consolidated by fine, series-connected or matrix-arranged high-pressure liquid jets (4), particularly water jets, which are ejected from ejectors (3) onto the fiber material web (2) and penetrate the fiber material web and the transport device (5). Each ejector (3) can be constructed, for example, as a suction beam (Düsenbalken) transverse to the fiber material web (2) and oriented relative to its transport path, and overlaps the fiber material web (2) to the greatest extent, preferably completely, across its width.

[0175] The ejected liquid jet (4) is received by the suction device (6), and is drawn away as a suction flow. According to Figure 1 , Figure 2 and Figure 5The suction device (6) has a jet suction box (14) and a conveyor (11) for transporting the fibrous material web (2) in the area of ​​the ejector (3). The jet-permeable conveyor (11) supports the flat fibrous material web (2) against the generated liquid jet (4).

[0176] The jet suction box (14) draws in the liquid jet (4) that is flowing out again from the fiber material web (2) and the conveyor (11) using a suction flow. Additionally, air may be drawn in from the external environment of the fiber material web (2). The jet suction box (14) along... Figure 1 and Figure 9 The jet (4) shown is positioned below the conveyor (11) in the ejection direction. The jet suction box (14) is fixedly positioned relative to the moving conveyor (11).

[0177] In the illustrated embodiment, the jet suction box (14) is constructed as a long and straight jet suction tube (15) having a cross-section that is preferably at least partially rotationally symmetric. The jet suction tube (15) may, for example, have a substantially cylindrical shape. Alternatively, another embodiment may be adopted, such as a box shape in the form of a cuboid. The features described below with respect to the jet suction tube (15) also apply accordingly to other types of jet suction boxes (14).

[0178] In the illustrated embodiment, the conveyor (11) is configured as a rotary-driven cylindrical conveyor roller (12) in which a jet suction box (14) or a jet suction pipe (15) is fixedly arranged in a relative position. The conveyor roller (12) is concentrically arranged with respect to the central axis (16) of the jet suction pipe (15) and rotates about this axis (16). The conveyor roller (12) can be rotary-driven in any suitable manner. For this purpose, a drive (13) is provided, in Figure 2 The image shows, for example, the gear ring of the drive, which is arranged at the end of the conveyor roller (12). Other components of the drive (13) are not shown, such as a motor with a transmission and output pinion.

[0179] The conveyor (11) is configured to be permeable to both fluid and jet. This allows the liquid jet (4) and air to pass through. For this purpose, the conveyor (11) may have, for example, perforated or pierced conveying elements. In the embodiment of the conveyor roller (12) shown, the roller shroud is fluid permeable.

[0180] In another variation, not shown, the conveyor (11) can be constructed in a different manner, for example, as a circulating belt conveyor. It can also be fluid-permeable and may, for example, have a perforated or pierced conveyor belt. The belt conveyor can, for example, work in conjunction with a square jet suction box (14).

[0181] In the illustrated embodiment, the conveying roller (12) has a perforated, particularly pierced, cylindrical shroud through which the liquid jet (4) can reach the jet suction box (14) or the jet suction pipe (15). A negative pressure can be generated in the jet suction pipe (15) to effectively and specifically draw the ejected liquid jet (4) into the hollow internal space (17) of the box. The jet suction pipe (15) is closed at one end and has a suction opening (43) at the other end through which the sucked liquid / air mixture can exit the internal space (17) of the box again.

[0182] The fiber material web (2) is wound around a conveyor roller (12) over most of its circumference. The fiber material web (2) can be conveyed by the rotation of the roller and can also be transferred to the following conveyor roller (12), and after passing through the final consolidation device (1), it can be transferred again to a conveyor belt or other means of transport. The fiber material web (2) can be placed directly on the roller cover. Alternatively, a moving conveyor belt can be arranged between them.

[0183] An ejector (3) is arranged below the transport device (5) and at the transfer point from the fiber material web (2) to the first suction device (6), and the liquid jets (4) ejected from it pass through the conveyor belt. They additionally cause the swaying and transfer of the fiber material web (2) on the first conveyor roller (12). Figure 1 This arrangement is shown.

[0184] Figure 2 and Figure 5 Other components of the suction device (6) are schematically shown. A conveying roller (12) is rotatably mounted, for example, on a jet suction pipe (15). For this purpose, the jet suction pipe (15) may have a support surface (41) at its end side. Figures 2 to 5 The support surface is shown in the figure. An intermediate space (22) may exist between the jet suction pipe (15) and the conveying roller (12), which may correspond to the radial space requirements of the roller support. Figure 5 and Figure 9 This arrangement is shown. The jet suction pipe (15) has a support journal (Stützzapfen) at the closed end and a pipe flange (42) at the other open end (43) for fixed mounting.

[0185] The suction device (6) has a negative pressure generator (7) that draws a liquid / air mixture from the jet suction pipe (15) through an opening (43) and a connected conduit. The suction device (6) may also have a recovery device (8) that separates the liquid from the air and allows it to be resupplyed to one or more injectors (3) via recirculation (9) and a cleaning device (if needed). Air can be discharged through an outlet (10). The negative pressure generator (7) and the recovery device (8) are located in... Figure 2 They are shown only schematically. They can be constructed and arranged in any suitable manner. The recovery device (8) can be constructed, for example, as a cyclone separator.

[0186] Figures 3 to 14 A first design variation of the jet suction box (14) or jet suction pipe (15) is shown. The conveying element (11), and particularly the conveying roller (12), is shown here. Figures 15 to 20 Another variant is shown in the figure.

[0187] The hollow jet suction tube (15) has a box shell (18) or tube cover, the cross-section of which is constructed to be cylindrical on the inside and may have a prismatic shape with multiple flattened portions (19) on the outside. Figure 4 and Figure 9 This implementation method is shown.

[0188] The jet suction tube (15) has at least one suction nozzle (23, 23”) on its housing (18) having a slit-shaped suction opening (25). The suction nozzle (23, 23”) and its slit-shaped suction opening (25) extend along the axis (16) of the jet suction box (14), particularly along the central longitudinal axis (16) of the jet suction tube (15). They also preferably extend over the entire width of the fiber material web (2).

[0189] The number and arrangement of the suction nozzles (23) can be determined based on the number and arrangement of one or more injectors (3). In the illustrated embodiment, based on... Figure 1 In the consolidation device (1), for example, three ejectors (3) are arranged in an arc around the conveying drum (12) and the jet suction pipe (15). This arc arrangement and the ejection direction of the liquid jet (4) can be concentric with the axis (16).

[0190] Suction nozzles (23) can be arranged in appropriate numbers and distributions on the housing (18) of the jet suction pipe (15). They point with their suction openings (25) toward their respective ejectors (3) and are opposed to the ejectors in the ejection direction. The liquid jets (4) ejected by each ejector (3) reach the suction openings (25) directly after passing through the fiber material web (2) and the conveyor (11, 12), and are suctioned in the form of a suction flow with a suction flow direction (23'). Figure 9 This situation is illustrated by an arrow.

[0191] The suction nozzle (23) and the ejector (3) are arranged in the area where the fiber material web (2) is wrapped and abutted on the conveyor (11, 12).

[0192] Figure 1 The possibility of arranging additional nozzles (23”) on the jet suction box (14), which are not assigned to the ejector (3), is also shown. The nozzles (23, 23”) can be constructed of the same type. The additional nozzles (23”) can additionally dehumidify the fibrous material web (2). They are also arranged in the aforementioned winding and contact area.

[0193] The suction flow direction (23') and the vertical axis of the suction opening (25) are radially oriented relative to the axis (16). The corresponding liquid jet (4) entering the suction opening (25) is supported by the negative pressure and suction effect in the internal space (17) of the box. In addition, air is drawn in from the outside of the fiber material web (2) through the suction opening (25) and is entrained by the liquid jet (4) in the case of forming a suction flow.

[0194] In the illustrated embodiment, three suction nozzles (23) circumferentially distributed on the outer casing (18) are each configured as a suction nozzle assembly having a suction nozzle body (24), which is arranged above the axial casing opening (20) in the outer casing (18). The suction nozzle bodies (24) extend radially outward from the outer casing (18), and according to... Figure 1 , Figure 5 , Figure 8 and Figure 9 As shown, it extends to the conveyor (11), particularly the conveyor roller (12), and fits tightly against it. Other suction nozzles (23”) can be constructed in the same manner.

[0195] Preferably, a slit-shaped outer shell opening (20) extends along the axis (16) within the outer shell (18). It extends across the width of the material web and terminates before the end edge of the jet suction pipe (15). Multiple support pillars (21) are arranged within this slit-shaped outer shell opening (20). This arrangement can be inclined and can be constructed as a frame. The slit-shaped outer shell opening (20) can extend across the entire width of the material web, or across one or more sub-regions of the material web width. The slit-shaped outer shell opening (20) can be continuous, partially arranged, or interrupted.

[0196] Each suction nozzle (24) extends through a slit-shaped suction opening (25) along the suction flow direction (23'), wherein the inlet side (26) of the suction opening (25) is located at the free end of the suction head (24) and points outward, and its outlet side (27) points towards the outer casing opening (20). Figure 9 As shown, the width of the cross-section of the suction opening (25) increases from the inlet side (26) toward the outlet side (27).

[0197] The nozzle body (24) has at least one slit-shaped suction opening (25) arranged beside and laterally defining the suction opening (25) on the inlet side (26), and a movable sealing element (29, 29'). In the illustrated embodiment, movable sealing elements (29, 29') are arranged on both sides of the suction opening (25). This mobility exists along the suction flow direction (23'). One or more sealing elements (29, 29') are constructed as strips and preferably as one piece. They extend along the axis (16). Figures 3 to 14 and Figures 15 to 20 Various embodiments of the sealing element (29, 29') are shown.

[0198] The nozzle body (24) also has an elastically telescopic extension device (33) acting on at least one sealing element (29, 29'). This extension device is configured to push the sealing element (29, 29') outward from the housing opening (20) against the suction flow direction (23') and press it against the conveyor (11), particularly the rotating conveyor roller (12). Here, at least one movable sealing element (29, 29') is tightly pressed against the inside of the conveyor (11), particularly the conveyor roller (12), under elastic force. This tight contact prevents dummy air from being drawn from the intermediate space (22) into the nozzle body (24) and into the suction opening (25).

[0199] At least one movable sealing element (29, 29') can move along the suction flow direction (23') under the action of the elastically telescopic extension device (33). It has a shape favorable for sealing on its outer side pointing towards the conveyor (11). It can have a shape on its outer side such as... Figure 9 The oblique cut or rounding shown. At least one sealing element (29, 29') may have a surface made of a low-friction material, at least on the outer side.

[0200] exist Figures 3 to 14 In one embodiment, the resilient telescopic extension device assigned to each sealing element (29, 29') includes a plurality of pressure springs (33'). These pressure springs have an extension and action direction along the suction jet direction (23'). The pressure springs (33') are, for example, housed in a lower blind hole of at least one sealing element (29, 29').

[0201] In the illustrated embodiment, when the jet suction box (14) is installed on the conveyor (11), particularly in the rotating conveyor roller (12), the pressure spring (33') is compressed and generates elastically stretchable pressure in the installation position, and the various movable sealing elements (29, 29') use this pressure to press tightly against the conveyor (11) or the conveyor roller (12).

[0202] In another embodiment, not shown, the various resiliently telescopic extension devices (33) can be constructed in a different manner. It can be switchable and / or expandably controllable. For example, an extender (33”) with, for example, a punch or cylinder can be used instead of a pressure spring (33’), which can be switchably or controllably loaded with a compressible pressure medium, particularly compressed gas. Figures 15 to 20 In another variant shown, the elastically telescopic extension device (33) may have an extender (33”) in the form of, for example, a pressure hose or a pressure bellows, which can be extended by such a compressible pressure medium, particularly compressed gas, which extends at least partially along the axis (16) and expands laterally when inflated, and directly or indirectly loads and moves the associated sealing elements (29, 29').

[0203] When disconnected, the expansion device (33), configured as an expander (33"), shrinks, thereby causing the loaded sealing element (29, 29') to lose its compressive force on the conveyor (11) or conveyor roller (12), and, if necessary, to also move away in the suction flow direction (23'). By controlling the loading of the expansion device (33), or expander (33"), the elastically expandable and compressive forces acting on the sealing element (29, 29') can be adjusted and changed as needed.

[0204] At least one sealing element (29, 29') may additionally and laterally movably be arranged on the nozzle body (24) relative to the suction flow direction (23'). By such lateral movement, the width of the suction opening (25) in the region of one or more movable sealing elements (29, 29') can be changed.

[0205] The suction nozzle body (24) has an adjustment device (34) by which at least one movable sealing element (29, 29') can be adjusted laterally in the suction flow direction (23'). As a result, the width of the slot of the suction opening (25) can be changed.

[0206] The regulating device (34) includes, for example, at least one actuating element (34'), which is arranged in a slit-shaped suction opening (25) and can be accessed from the outside from the inlet side (26). Figures 10 to 14 As shown, multiple operating elements (34') are arranged sequentially at certain intervals along the axis (16). They are configured, for example, as adjustable bolts of variable length that act on the sealing elements (29, 29') on both sides, and their length can be changed by a wrench inserted into the suction opening (25).

[0207] The nozzle body (24) has a guide device (35) for at least one movable sealing element (29, 29'). The guide device (35) can guide one or more sealing elements (29, 29') as they move along and across the suction flow direction (23').

[0208] In the illustrated embodiment, the suction nozzle body (24) has a hollow base (30) on which at least one movable sealing element (29, 29') is arranged. The hollow base (30) is also penetrated by a suction opening (25) and extends to the outer casing (18) and the casing opening (20). It can be mounted and supported on the outer casing (18), for example, in the area of ​​another possible flattened portion (19). A resiliently telescopic extension device (33) is arranged between the base (30) and the associated at least one movable sealing element (29, 29'). A guide device (35) can also be arranged between the base (30) and at least one movable sealing element (29, 29').

[0209] exist Figures 3 to 14 In the illustrated embodiment, the hollow base (30) includes a support element (32) disposed above the housing opening (20) and at least one load-bearing element (31, 31'). The at least one load-bearing element (31, 31') is disposed between the support element (32) and each associated at least one movable sealing element (29, 29').

[0210] The support elements (31, 31') are also constructed as strips and extend along the slit-shaped suction opening (25) and axis (16). At least one movable sealing element (29, 29') is arranged on the associated support element (31, 31'). It floats spaced above the associated support element (31, 31') and is supported by a resiliently telescopic extension device (33), in particular a pressure spring (33'). Here, the resiliently telescopic extension device (33), in particular a pressure spring (33'), is supported on the associated support element (31, 31'). Figure 8 and Figure 9 This structure and arrangement are shown.

[0211] like Figure 10 As shown, the inner sides of the at least one movable sealing element (29, 29') and the associated support element (31, 31') pointing towards the suction opening (25) are flush with each other along the suction flow direction (23'). The outer sides of the at least one movable sealing element and the associated support element opposite to the suction opening (25) are also flush with each other along the suction flow direction (23').

[0212] In the illustrated embodiment, each of the two movable sealing elements (29, 29') is associated with a carrier element (31, 31').

[0213] One or more sealing elements (29, 29') and bearing elements (31, 31') corresponding to each other are connected to each other such that they are arranged together movably transverse to the suction flow direction (23') and mounted on the support element (32). Figure 10 and Figure 13 This construction is shown, in which... Figure 13 Only one sealing element (29') and the associated bearing element (31') are shown.

[0214] In the illustrated embodiment, the guiding device (35) has a guide (35') arranged between at least one movable sealing element (29, 29') and at least one carrying element (31, 31') and acts along the suction flow direction (23'). The guide (35') is, for example, according to Figure 13 and Figure 14 They are multiple and distributed along the slit-shaped suction opening (25). The guides (35') are configured, for example, as straight guide rods or guide bolts. They extend into corresponding guide openings on at least one sealing element (29, 29').

[0215] The guiding device (35) has at least one guide (35”) arranged between at least one carrier element (31, 31’) and a support element (32) and functions transversely to the suction flow direction (23’). Figure 13 and Figure 14 As shown, the guides (35”) are also multiple and distributed along the slotted suction openings (25). They are each composed of a guide rod extending downward from the corresponding support element (31, 31’) and an elongated hole on the support element (32) transverse to the suction flow direction (23’). The guide rod extends into the corresponding elongated hole and is guided here during its transverse movement. Figure 14 The guide elements (35, 35") and the resiliently telescopic extension device (33), particularly the pressure spring (33'), are schematically shown, without sealing and load-bearing elements (29, 29', 31, 31'). Furthermore, in Figure 13 and Figure 14 The control element (34') is shown in the figure.

[0216] Figure 10 An open end-side view of the suction body (24) and the suction nozzle (23, 23') is shown. Figure 11 and Figure 12 A perspective sectional view of the jet suction box (14) and the suction nozzle body (24) at different positions along the axis (16) and the suction opening (25) is shown. Here, in Figure 11 The central control element (34') is visible, in Figure 12 The elastic extension device (33), especially the pressure spring (33'), is visible.

[0217] also, Figures 10 to 12 Also shown are resiliently telescopic sealing baffles (36) arranged on the outside of at least one carrier element (31, 31') opposite to the suction opening (25) and on at least one movable sealing element (29, 29'). For example, the sealing baffles (36) made of rubber cover the gap between the carrier element (31, 31') and the associated sealing element (29, 29') and seal the gap during relative movement between the respective sealing elements (29, 29') and the associated carrier element (31, 31'). During this relative and expanding movement, resiliently telescopic expansion devices (33) are supported on the associated carrier elements (31, 31'). When adjusting the width of the suction opening (25), one or more sealing elements (29, 29') loaded by the actuating element (34') drive their respective associated carrier elements (31, 31') via the guide element (35').

[0218] In the illustrated embodiment, the support element (32) has a support cone (37) arranged above the housing opening (20) and extending in a direction toward the housing opening (20). The support cone (37) has a sealed and preferably thin-walled cone wall (37') and a cone bottom (37”) permeable to the suction flow, the cone bottom being spaced apart above the housing opening (20). In the region of the support cone (37), the suction opening (25) extends particularly strongly. The width of the lower opening of the support cone (37) may be greater than the width of the housing opening (20).

[0219] The bottom of the cone (37”) has multiple through-holes for suction flow along its length along the axis (16) and transverse tabs arranged between these through-holes. Guides (35”) can act on the transverse tabs. There are wall regions on both sides of the through-holes, and elastically telescopic extension devices (33), in particular pressure springs (33'), are supported on these wall regions. Figure 14 This structure and arrangement are shown.

[0220] The nozzle body (24) has an adjustable opening edge limiter (39) at one or both end faces of the slit-shaped suction opening (20) and at least one movable sealing device (29, 29'). The opening edge limiter closes the suction opening (25) along the suction flow direction (23') in its edge region and also closes the suction opening at the end face.

[0221] The opening edge limiter (39) includes, for example, a slider (40) movable along the axis (16) and the housing opening (20). Thus, a smaller or larger area of ​​the suction opening (25) can be covered and closed on its edge depending on the slider's position. The slider (40) is inserted into a slot guide (40') on preferably two sealing elements (29, 29') and is axially guided therein. It extends from the end of the suction nozzle body (24) and has a handle portion in that position. An upwardly protruding protrusion (40') is arranged on the opposite end of the slider (40), which is sandwiched between the sealing elements (29, 29') on both sides and here closes the suction opening (25) at the end. Figure 13 This construction and arrangement of the opening edge limiter (39) is shown.

[0222] The nozzle body (24) can be movably and particularly displaceably arranged on the outer casing (18) by means of a retainer (28). The retainer (28) consists, for example, of two slotted guide strips oriented along an axis (16), which are arranged on both sides of the outer casing opening (20) and fixedly mounted on the outer casing (18), for example on the flattened portion (19). The nozzle body (24) engages in the slit-like receiving portion of the guide strips. For this purpose, in the illustrated embodiment, the conical wall (37') is correspondingly bent at the end.

[0223] Furthermore, the nozzle body (24) is equipped with a handle (44) on its end side. Therefore, the nozzle body (24) can be axially inserted into and withdrawn from the retainer (28). This is, for example, according to... Figure 5 This is achieved on the side of the suction body (24) opposite to the flange (42). On this side, the suction body (24) can also be removed from the cover along with the conveyor (11) and the special conveyor roller (12), and can then be accessed from the outside. In particular, the adjusting device (34) can then be easily reached and operated. If necessary, one or more resiliently telescopic extension devices (33) can be closed when the suction body (24) is moved in and out.

[0224] according to Figure 3 and Figure 4 The suction nozzle body (24) has closed sidewalls (38) and closed endwalls (38'). The sidewalls (38) are formed, for example, by a conical wall (37'), corresponding support elements (31, 31'), and corresponding movable sealing elements (29, 29'), and, if necessary, sealing baffles (36). The endwalls (38') can be mounted at the end ends of the hollow base (30). They seal the suction opening (25) at the end. The slider (40) can be located above the corresponding endwall (38').

[0225] Figures 15 to 20 Another variation of the above-described suction nozzle (23, 23”) and the jet suction box (14) equipped with the suction nozzle and the suction device (10) equipped with the jet suction box is shown.

[0226] Figure 15 and Figure 16 The nozzle (23, 23”) is shown in the mounting or assembly position on the jet suction box (14). Figure 15 and Figure 16The mounting positions on the moving conveyor (11), particularly the rotating conveyor roller (12), and the suction device (6) are also shown. The jet suction box (14) and the suction device (6) can be constructed and arranged as described above. They can also be associated with the aforementioned consolidation equipment (1) for liquid jet consolidation, particularly water jet consolidation. Another variation of the suction nozzle (23, 23”) can be arranged on the jet suction box (14) as described above.

[0227] Furthermore, another variation of the nozzle (23) may have the aforementioned opening edge limiter (39). For clarity, in Figure 15 and Figure 16 The opening edge limiter is not shown. Another variation of the nozzle (23, 23”) can have a nozzle body (24). This nozzle body can have the closed sidewalls (38) and closed endwalls (38') described above, and may have a handle if necessary. The endwalls (38') can be arranged at the end of the nozzle body (24) in the manner described above. For clarity, they are located at... Figures 15 to 20 Not shown in the image.

[0228] Figure 17 and Figure 18 The perspective top view and the exploded perspective bottom view of the suction nozzle (23, 23”) are shown. Figure 19 and Figure 20 An end view of the nozzle (23) in its installed position and different working positions are shown. Figure 19 The unloading working position is shown, in which one or more sealing elements (29, 29') are released from the conveyor (11), particularly the rotating conveyor roller (12). In this position, the suction nozzle body (24) can be axially extracted and removed from the jet suction box (14) in the manner described above. Figure 20 The following working position is shown: in this working position, one or more sealing elements (29, 29') are closely abutted against the inside of the facing conveyor (11) or rotating conveyor roller (12) with their outer sides.

[0229] The alternative nozzle body (24) also includes a base (30), at least one movable sealing element (29, 29'), and an extension device (33) and a guide device (35) that act on the sealing element (29, 29'). In addition, the nozzle body (24) may include at least one carrier element (31, 31').

[0230] The nozzle (23, 23”) may also include a retainer (28) that movably, and particularly displaceably, receives the nozzle body (24), and particularly its base (30). In this second variation, the nozzle body (24), which may also be arranged or positioned above the housing opening (20), can be at least partially disengaged from the cover having the housing opening (20) due to the retainer (28). The retainer (28) can be secured to the housing (18) in a suitable manner. It may have an arched bottom that adapts to the external shape of the housing and rests against it in a planar manner. The housing (18) may have a rounded, and particularly cylindrical, shape on the outside. It may also have one or more flattened portions (19), as in the first embodiment.

[0231] exist Figures 15 to 20 The suction nozzle (23, 23”) shown differs from the above-described variant in the construction and arrangement of one or more sealing elements (29, 29’), one or more elastically telescopic extension devices (33), and a guide device (35) for at least one sealing element (29, 29’). One or more carrier elements (31, 31’) can also be constructed in other ways.

[0232] As in the first embodiment, the base (30) may include a support element (32), which may include, for example, a plate-like tab, and may be releasably and preferably fluid-tightly received in slots on the retainers (28) on both sides. The support element (32) may include a support cone (37) comprising a central cone base (37”) penetrated by the suction opening (25) and cone walls (37’) adjacent on both sides. A through-hole in the cone base (37”) is arranged above the housing opening (20) in the opposite direction to the suction flow direction (23’). The suction opening (25) widens along the suction flow direction (23’) as in the first embodiment.

[0233] The support cones (37) that are radially spaced from the outer shell (18) are flatter than those in the above-described variant. By changing the cone angle and the design of the base (30), and if necessary, at least one bearing element (31, 31'), different spatial conditions and installation requirements can be achieved on the jet suction box (14), especially the jet suction pipe (15), and on the associated conveyor (11), and the special conveyor roller (12).

[0234] One or more movable sealing elements (29, 29') are arranged at the free end of the nozzle body (24). They are arranged on the inlet side (26) next to the suction opening (25) and laterally define the suction opening. In the variant shown, one or more sealing elements (29, 29') and one or more associated resiliently telescopic extension devices (33) are arranged on both sides of the suction opening (25). The latter are used to press the associated sealing elements (29, 29') outward against the suction flow direction away from the outlet side (27) or the housing opening (20) and press them against the moving conveyor (11). The sealing elements (29, 29') on both sides have sidewalls pointing towards the suction opening (25) and extending along the suction opening (25) in a direction transverse to the suction flow direction. The sealing elements (29, 29') on both sides define the suction opening (25) on the inlet side (26) between them.

[0235] In the second variation, one or more sealing elements (29, 29') are respectively arranged and secured on the guide (35') of the guiding device (35), which is preferably constructed as a flat leaf spring (45). The leaf spring (45) guides the respective sealing elements (29, 29') with pivoting motion along and against the suction flow direction (23'). The leaf spring (45) extends primarily transversely to the suction flow direction (23').

[0236] The leaf springs (45) are clamped on one side, for example, on the outer edge and opposite to the suction opening (25). This clamping can be done on the bearing element (31, 31') or directly on the base (30). This can be achieved by a clamping element (47), such as an axial clamp, wherein the clamping element (47) can be fixed to the bearing element (31, 31') by bolts or other means, for example.

[0237] The support elements (31, 31') can be arranged on the outside and fastened to the base (30), particularly to the conical wall (37'). The support elements (31, 31') can also accommodate a resiliently telescopic extension device (33). The extension device is arranged between the base (30) and one or more movable sealing elements (29, 29'). The lateral and laterally spaced support elements (31, 31') define a suction opening (25) with their internal sidewalls, which widens in cross-section along the suction flow direction (23') from the sealing elements (29, 29').

[0238] The supporting element (31, 31') can be constructed as a socket. It may have a basin-shaped receiving portion at the top for an elastically telescopic extension device (33). This extension device is arranged below the leaf spring (45). It loads the leaf spring (45) from below and deforms the leaf spring when it expands. Thus, the elastically telescopic extension device (33) indirectly acts on the associated movable sealing element (29, 29').

[0239] The leaf spring (45) has one or more preferably strip-shaped or bar-shaped sealing elements (29, 29') on another edge pointing towards the suction opening (25). These sealing elements are configured, for example, as insert strips that can be fitted and secured to the edge of the leaf spring (45) in a suitable manner, preferably in a loss-proof manner. They are configured as clips with a generally U-shaped cross-section, the free end pieces of which are closely adjacent and spring-loaded against the leaf spring edge between them. The transverse end pieces of the generally U-shaped clips form, at their bottoms, the preferably flat sidewalls of the sealing elements (29, 29') pointing towards the suction opening (25). These sidewalls extend transversely to the suction flow direction (23') and also along, preferably parallel to, the suction flow direction (23').

[0240] One or more sealing elements (29, 29') can be fastened to the leaf spring (45) in any suitable manner. Preferably, fastening is achieved by form-fitting fasteners (46). The fasteners (46) can be, for example, formed by protruding stop bars on the upper and / or lower sides of the leaf spring (45) and corresponding stop openings on the inner walls of the clamping bars. Thus, the sealing elements (29, 29') can be easily removed and replaced or replaced as needed. Alternatively, other fastening methods are also possible, such as form-fitting fastening with bolts or pins and / or fastening by adhesive force.

[0241] The guiding device (35) includes the guide (35') that acts along the suction flow direction (23'). It may also include a guide (35”) that acts transversely to the suction flow direction (23'). The guide (35”) may be arranged and constructed between the leaf spring (45) and the load-bearing elements (31, 31').

[0242] like Figure 19 As exemplarily shown on the left, the guide (35”) may have one or more elongated holes in the edge region of the leaf spring (45), which cooperate with the bolt or other fastening device of the clamping member (47). Here, the bolt may also be part of an adjusting device (34). By loosening the bolt, the clamping of the leaf spring (45) can be released and the leaf spring can be adjusted to change the width of the suction nozzle opening (25).

[0243] One or more resiliently telescopic extension devices (33) are configured as switchable, controllable or adjustable extenders (33”) as described above. Figure 19 and Figure 20 An exemplary design is shown that is configured as an inflatable and extendable pressure hose or bellows.

[0244] According to Figure 19 In its resting position, at least one extender (33”) is relaxed and contracted, wherein the leaf spring (45) above it has its normal, preferably straight and flat extension. Figure 20 In the working position, the expander (33”) is actuated and expanded, wherein the expander causes the leaf spring (45) clamped on the edge side to bend and deform, thereby causing at least one corresponding sealing element (29, 29’) located on the edge of the leaf spring to press against the moving conveyor (11).

[0245] One or more extenders (33”) can be switched, controlled, and, if necessary, adjusted to be loaded with a preferably compressible pressure medium, such as compressed air, and, for example, inflated, in the manner described above. Here, they are supported in the housing on the support elements (31, 31') and extend in the direction abutting the leaf spring (45). In another embodiment not shown, one or more extenders (33”) may be configured as extendable cylinders (Zylinders) or other extenders operated by the pressure medium.

[0246] The fibrous material web (2) consolidated in one or more consolidation devices (1) using a liquid jet (4) can be transported to a subsequent processing facility (not shown). This facility can be, for example, a drying facility with an extrusion device (Quetschwerk) and / or a drying oven. Other processing equipment, such as a nonwoven fabric laying machine, a winding device, a cutting device, etc., can be connected to it.

[0247] The embodiments shown and described, as well as the variations mentioned, can be modified in various ways. In particular, the features of the embodiments and variations can be combined with each other arbitrarily within the scope of the claims, and can also be interchanged if necessary.

Claims

1. A suction nozzle of a hollow jet suction box (14) for a suction device (6) of a consolidation apparatus (1) for consolidating a moving web of fibrous material (2), wherein the jet suction box (14) has at least one slit-shaped shell opening (20) on its shell (18) leading to its internal space (17), wherein the suction nozzle (23, 23') has a suction body (24) that can be arranged above the shell opening (20) and a slit-shaped suction opening (25) penetrating the suction body (24) along the suction flow direction (23'), the suction opening having an outwardly pointing inlet side (26) and an outlet side (27) for suction flow, wherein the suction opening (25) extends from the inlet side (26) at the free end of the suction body (24) to the outlet side (27) that can be arranged on the shell opening (20) of the shell (18), characterized in that, The nozzle body (24) has at least one movable, strip-shaped sealing element (29, 29') arranged beside the suction opening (25) and laterally defining the slit-shaped suction opening (25) on the inlet side (26), and at least one elastically telescopic expansion device (33) acting on the sealing element (29, 29'), the expansion device being configured to push the sealing element (29, 29') outward from the outlet side (27) against the suction flow direction (23'). The at least one elastically telescopic extension device (33) includes an extender (33) that can be switched and / or controlled to expand, the extender including an inflatable pressure hose or pressure corrugation.

2. The suction nozzle according to claim 1, characterized in that, The at least one sealing element (29, 29') is additionally arranged laterally on the nozzle body (24) and laterally movable relative to the suction flow direction (23').

3. The suction nozzle according to claim 2, characterized in that, The width of the slit-shaped suction opening (25) is variable.

4. The suction nozzle according to claim 1, characterized in that, The suction nozzle (24) can be movably arranged on the outer shell (18) by means of a retainer (28) and can be removed at least partially from the cover having the opening (20) of the outer shell.

5. The suction nozzle according to claim 4, characterized in that, The suction nozzle (24) is axially movable and / or displaceable.

6. The suction nozzle according to claim 1, characterized in that, The nozzle body (24) has a guide device (35) for the at least one movable sealing element (29, 29'), wherein the guide device (35) is configured to guide the at least one movable sealing element (29, 29') along the suction flow direction (23') when the at least one movable sealing element (29, 29') moves.

7. The suction nozzle according to claim 6, characterized in that, The guiding device (35) is configured to guide the at least one movable sealing element transversely to the suction flow direction (23') when the at least one movable sealing element (29, 29') moves.

8. The suction nozzle according to claim 6, characterized in that, The nozzle body (24) has a hollow base (30) through which the suction opening (25) passes, and at least one movable sealing element (29, 29') is arranged on the base, wherein the elastically telescopic extension device (33) is arranged between the base (30) and the at least one movable sealing element (29, 29').

9. The suction nozzle according to claim 8, characterized in that, The guide device (35) is arranged between the base (30) and the at least one movable sealing element (29, 29').

10. The suction nozzle according to claim 8, characterized in that, The hollow base (30) includes a support element (32) that can be arranged above the housing opening (20) and at least one load-bearing element (31, 31'), the load-bearing element being arranged between the support element (32) and the at least one movable sealing element (29, 29'), wherein the elastically telescopic extension device (33) is supported on the at least one load-bearing element (31, 31') and acts on the associated sealing element (29, 29'). The guiding device (35) includes a longitudinal guide (35') disposed between the at least one movable sealing element (29, 29') and the at least one carrying element (31, 31') and acting along the suction flow direction (23'). The longitudinal guide (35') is configured as a leaf spring (45) clamped on the edge side, the leaf spring carrying the at least one sealing element (29, 29') on its other opposite edge, wherein the at least one elastically telescopic extension device (33) is configured to act on the longitudinal guide (35') and push the longitudinal guide (35') outward from the outlet side (27) against the suction flow direction (23').

11. The suction nozzle according to claim 10, characterized in that, The support element (32) is configured as a support cone (37).

12. The suction nozzle according to claim 1, characterized in that, The nozzle body (24) has a closed side wall (38) and a closed end wall (38').

13. The suction nozzle according to claim 11, characterized in that, The nozzle body (24) has a handle (44) on the end side.

14. The suction nozzle according to claim 1, characterized in that, The nozzle body (24) has an opening edge limiter (39) at one or both end ends of the suction opening (25) and at the at least one movable sealing element (29, 29').

15. The suction nozzle according to claim 14, characterized in that, The opening edge limiter is adjustable.

16. A jet suction box for a suction device (6) for a consolidation apparatus (1) for consolidating a moving fibrous material web (2) using a liquid jet (4), wherein the jet suction box (14) is configured and constructed to suction the liquid jet (4) emitted by the consolidation apparatus (1) and flowing out again from the fibrous material web (2) in the form of a suction flow, and wherein, The hollow jet suction box (14) has at least one slit-shaped shell opening (20) on its shell (18) leading to its internal space (17), wherein the jet suction box (14) has at least one suction nozzle (23, 23") on its shell (18), the suction nozzle having a suction body (24) arranged above the shell opening (20) and a slit-shaped suction opening (25) penetrating the suction body (24) along the suction flow direction (23'), the inlet side (26) of the suction opening pointing outward, and the outlet side (27) of the suction opening pointing towards the shell opening (20), characterized in that the suction nozzle (23, 23") is constructed according to any one of claims 1 to 15.

17. The jet suction box according to claim 16, characterized in that, The liquid jet (4) is a water jet, and / or the fiber material web (2) is a nonwoven fabric.

18. The jet suction box according to claim 16, characterized in that, A retainer (28) is arranged on the outer shell (18), wherein the suction nozzle (24) is movably arranged on the outer shell (18) by means of the retainer (28) and can be removed at least partially from the cover having the opening (20) of the outer shell.

19. The jet suction box according to claim 18, characterized in that, The nozzle body (24) is axially movable and / or displaceable on the outer shell (18) by means of a retainer (28).

20. The jet suction box according to claim 16, characterized in that, The jet suction box (14) is constructed as a straight jet suction tube (15).

21. The jet suction box according to claim 20, characterized in that, The jet suction tube (15) is configured to have at least a partially rotationally symmetric cross section, and / or the jet suction tube (15) has an outer prismatic housing (18) with a flattened portion (19) in the region of the housing opening (20).

22. The jet suction box according to claim 16, characterized in that, The jet suction box (14) has a plurality of suction nozzles (23, 23”) arranged circumferentially on its outer shell (18).

23. The jet suction box according to claim 22, characterized in that, The nozzle (23) is configured as a nozzle corresponding to an injector (3) that emits a pressurized jet of liquid (4) and / or other nozzles (23”) without a corresponding injector.

24. A suction device for an apparatus (1) for consolidating a fiber material web (2) using a liquid jet, wherein the suction device (6) has a hollow jet suction box (14), characterized in that, The jet suction box (14) is constructed according to any one of claims 16-23, wherein the suction device (6) has a liquid-permeable conveyor (11) for the fiber material web (2), wherein the jet suction box (14) is fixedly arranged relative to the moving conveyor (11), and wherein at least one sealing element (29, 29') is tightly abutted against the conveyor (11) with its outer side.

25. The suction device according to claim 24, characterized in that, The liquid jet (4) is a water jet, and / or the fiber material web (2) is a nonwoven fabric, and / or the conveyor (11) is perforated, and / or the conveyor (11) is a rotary driven conveyor roller (12) or conveyor belt, and / or the jet suction box (14) is arranged inside the conveyor roller (12).

26. The suction device according to claim 24, characterized in that, The jet suction box (14) is arranged below the conveyor (11) for the fiber material web (2) along the ejection direction of the liquid jet (4).

27. The suction device according to claim 26, characterized in that, The liquid jet (4) is a water jet, and / or the jet suction box (14) is arranged inside the rotating conveying roller (12).

28. A consolidation apparatus for consolidating a fiber material web (2) using a liquid jet (4), comprising at least one ejector (3) that emits a liquid jet (4) under pressure, and a suction device (6) having a jet suction box (14), characterized in that, The jet suction box (14) is constructed according to any one of claims 16-23, and the suction device (6) is constructed according to any one of claims 24-27, wherein the ejector (3) directs the emitted liquid jet (4) toward the nozzle (23) of the jet suction box (14) facing outward along the ejection direction.

29. The consolidation device according to claim 28, characterized in that, The liquid jet (4) is a water jet, and / or the fiber material web (2) is a nonwoven fabric.

30. The consolidation device according to claim 28, characterized in that, The consolidation device (1) has a plurality of ejectors (3) arranged side by side along the running direction of the fiber material web (2), and the ejectors are respectively opposite to a nozzle (23) of the jet suction box (14) along the ejection direction.

31. The consolidation device according to claim 30, characterized in that, One or more additional nozzles (23”) that are not associated with the ejector (3) are arranged on the jet suction box (14) and are directed toward the fiber material web (2).

32. A method for aspirating a liquid jet (4), said liquid jet being ejected from and exiting a fibrous material web (2) moved by a consolidation device (1) through a liquid-permeable conveyor (11), wherein, The departing liquid jet (4) is drawn into the hollow jet suction box (14) of the suction device (6) in the form of a suction flow, wherein the jet suction box (14) has at least one slit-shaped shell opening (20) on its shell (18) leading to its internal space (17), wherein the jet suction box (14) has at least one suction nozzle (23) on its shell (18), the suction nozzle having a suction body (24) arranged above the shell opening (20) and a slit-shaped suction opening (25) penetrating the suction body (24) along the suction flow direction (23'), the inlet side (26) of the suction opening pointing outwards. The nozzle body (24) is characterized in that it has at least one movable, strip-shaped sealing element (29, 29') arranged next to the suction opening (25) on the inlet side (26) and at least one elastically telescopic extension device (33) acting on the sealing element (29, 29'), wherein the at least one movable sealing element (29, 29') laterally defines the slit-shaped suction opening (25) and is pressed tightly against the conveyor (11) by the at least one elastically telescopic extension device (33). The at least one elastically telescopic extension device (33) includes an extender (33) that can be switched and / or controlled to expand, the extender including an inflatable pressure hose or pressure corrugation.

33. The method according to claim 32, characterized in that, The liquid jet (4) is a water jet, and / or the fiber material web (2) is a nonwoven fabric.

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