Bulk material diverter valve

Abstract

A bulk material diverter valve comprises: a housing (2) having a bulk material inlet (3) and a plurality of bulk material outlets (4, 5); a self-rotating member (6) rotatably arranged within the housing (2) about a rotation axis (7) and having a passage duct (12) connecting the bulk material inlet (3) with one of the bulk material outlets (4, 5) for conveying bulk material; the utility model relates to a sealing device for circumferentially sealing a rotating part (6) in a housing (2), comprising at least one sealing element (30, 31) arranged in an end face groove (26) on the rotating part (6), the at least one sealing element (30, 31) being clamped in the groove (26) by means of at least one clamping element (34), the at least one clamping element can be defined on the rotating part (6).

Description

[0001] This utility model application claims the priority of German patent application DE 10 2023 206 883.4, the content of which is incorporated herein by reference. Technical Field

[0002] The utility model relates to a bulk material diverter valve for conveying bulk materials. Background Art

[0003] DE 34 14 0741A1 discloses an annular sealing ring for sealing a passage duct of a rotating component in a housing of a bulk material diverter valve. The annular sealing ring has a recess for improving the sealing performance. However, it has been shown that, in particular at low conveying pressures, it cannot be guaranteed that the compression force acting on the annular sealing ring will reliably close the gap between the housing and the rotating component. In particular, when the diverter valve is switched, i.e. when the rotating component rotates, bulk material can enter the sealing groove and in particular may pull the annular sealing ring out of the sealing groove. Due to the wear associated with the sealing ring, a higher contact pressure of the sealing ring in the sealing groove is undesirable. Wear can cause the sealing ring to wear faster and cause contamination to the transported bulk material. If the sealing ring is glued in the sealing groove, there are disadvantages in terms of replacing the sealing ring and unpredictable adhesive bonding period.

[0004] The bulk material diverter valves disclosed in EP 0 344 584 B1 and DE 199 52 435 A1 have seals which are additionally pressed into the sealing groove or onto the sealing surface and / or into the sealing gap due to the pressurization. Complex pressure channels are required to pressurize the seals. The design of such bulk material diverter valves is complicated and complex. Utility Model Content

[0005] The utility model aims to improve the sealing of the self-rotating components in the housing of the bulk material diverter valve, and in particular to ensure reliable sealing in an uncomplicated manner.

[0006] According to the utility model, the object is achieved by a bulk material diverter valve, which comprises: a shell having a bulk material feed port and a plurality of bulk material discharge ports; a rotating component which is arranged in the shell so as to be rotatable around a rotation axis and has a passage pipe, which connects the bulk material feed port to one of the bulk material discharge ports to convey the bulk material according to the rotation position of the rotating component relative to the rotation axis; a sealing device for circumferentially sealing the rotating component in the shell, having at least one sealing element arranged in an end face groove of the rotating component, wherein the at least one sealing element is clamped in the groove by at least one clamping element, and the at least one clamping element can be confined on the rotating component.

[0007] According to the utility model, it has been recognized that the rotating parts in the housing of the bulk material diverter valve can be advantageously sealed circumferentially, in particular in the rotation direction of the rotating parts. Such a bulk material diverter valve makes it possible to improve the transportation of bulk materials, in particular along the conveying pipeline, especially in a pipeline conveying system for bulk materials. The transportation of such bulk materials, for example, can be pneumatic transportation, in particular bulk material transportation by a pressurized fluid. The fluid can be a gas, in particular air, and / or a liquid. In particular, the transportation of bulk materials includes pneumatic transportation of bulk materials, in particular pneumatic wet transportation of bulk materials, i.e. by adding liquid, in particular water and / or water vapor, and hydraulic transportation of bulk materials, in particular by water. The bulk material diverter valve is particularly suitable for pressurized or under-pressure conditions.

[0008] A sealing device for circumferential sealing of a rotating component comprises at least one sealing element, which is particularly made of an elastically deformable sealing material. The sealing material is particularly a plastic material, particularly an elastomer, particularly a silicone rubber. The at least one sealing element extends around the circumference of the rotating component. The at least one sealing element is arranged circumferentially relative to the rotation axis of the rotating component at least in a partial section. With respect to the rotation axis, the rotating component has a cylindrical or frustoconical geometry. The at least one sealing element is arranged in an end face groove, particularly on both sides of the rotating component. In particular, the end face groove forms a circumferential shoulder. The end face groove is designed as an external, annular, particularly, fully circumferential groove on the outer end wall of the rotating component.

[0009] Surprisingly, it has been found that at least one sealing element can be reliably clamped in the end face groove of the rotating component by at least one clamping element. In particular, the clamping element is detachably attached to the rotating component, in particular by screwing. The clamping element can be used to set the width of the groove, which corresponds to the groove width, so that it is smaller than the initial width of the sealing element in the unmounted state. In particular, the resulting groove width, and thus the clamping force applied to the sealing element, can be determined by defining the geometry of the clamping element, in particular by defining the thickness of the annular shoulder of the clamping element. The sealing element is clamped in the groove in an elastically preloaded manner, in particular in the axial direction of the rotating shaft. The sealing element is clamped axially. Therefore, an undesirable displacement of the sealing element outside the groove in a lateral direction, in particular in a direction perpendicular to the rotating shaft of the rotating component, can be reliably and easily prevented. The clamping disc constitutes a mechanical fixation of the sealing element. The mechanical fixation is stable.

[0010] According to the invention, it has been recognized in particular that additional fixing measures for clamping at least one sealing element in a groove can be particularly advantageously applied to circumferentially arranged sealing devices. In particular, the mechanical fixing for the circumferential sealing of the rotating component can be realized in an uncomplicated manner and can be directly integrated, in particular on the rotating component, in particular by functional integration.

[0011] In particular, there is an interior space inside the housing, into which the rotating component is inserted. The inner contour of the inner space corresponds to the outer contour of the rotating component. In order to simplify the rotational movement of the rotating component in the housing, it is particularly advantageous if there is a clear gap between the outer contour of the rotating component and the inner contour of the inner space, which gap extends in particular in radial proportion to the rotation axis of the rotating component. In particular, this simplifies the switching process of the rotating component. In particular, the rotating component is designed to be cylindrical or truncated cone relative to the rotation axis. Correspondingly, the inner contour of the inner space is designed to be cylindrical or conical.

[0012] The rotating component has a passage duct, which connects the bulk material feed inlet of the housing to one of the multiple bulk material discharge outlets of the housing according to the rotation position of the rotating component relative to the rotation axis, so as to convey the bulk material. A socket-shaped connecting element can be arranged at the bulk material feed inlet and / or the bulk material discharge outlet, and, in particular, is integrally formed with the housing. Each connecting element can have a connecting flange. The bulk material feed inlet and the bulk material discharge outlet define a conveying plane. The rotation axis of the rotating component is oriented transversely, in particular perpendicular to the conveying plane.

[0013] A bulk material diverter valve, in which at least one sealing element is fluidically connected to a compressed air supply, is able to provide an additional improved clamping of the at least one sealing element in an end face recess. The compressed air supply enables compressed air to be applied to the sealing element in the end face recess. The compressed air supply can be connected to a compressed air source. In principle, other pressurized fluid sources, in particular compressed gas sources, can also be connected. Due to the pressurization of the compressed air, the at least one sealing element can also be pressed into the recess. The clamping force of the at least one sealing element in the recess is improved.

[0014] An embodiment of at least one sealing element, in which at least one sealing element has a sealing lip, in particular formed by a sealing section with a notch, enables improved sealing. In particular, it has been recognized that the geometry-related flexibility of the sealing element with the sealing lip can be further increased by means of a notch in the sealing section of the sealing element. Due to this improved flexibility, at least one sealing element can be advantageously pressed into an end face groove, in particular by means of a clamping element and / or the application of compressed air. The notch is designed as a V-shaped or U-shaped in the sealing section. Due to the presence of the notch, the profile of the sealing section is generally K-shaped or B-shaped. The notch extends in particular transversely to the depth direction of the groove, in particular perpendicularly to the depth direction, and in particular along the width direction of the groove. The notch is optional. In particular, the sealing lip can be designed without a notch. The sealing lip is in particular designed as a thin-walled section and is very flexible so that it can adapt itself to the respective sealing surface when pressure is applied. The sealing lip enables the sealing element to perform uncomplicated linear or surface sealing.

[0015] An embodiment of a sealing cross-section, in which the sealing cross-section has a housing sealing surface, with which the respective sealing element abuts against the inner surface of the housing in a sealing manner, ensures an additional improved sealing of the rotating component relative to the housing, in particular in the circumferential direction of the rotation axis of the rotating component. At least one sealing element has a housing sealing surface, which is in direct sealing contact with the corresponding inner surface of the housing. The housing sealing surface is in particular formed on the outside of the sealing lip. The inner surface of the housing forms the contact surface. The housing sealing surface in particular has a convex outer contour, in particular semicircular, and in particular has no edges. The housing sealing surface protrudes from the groove, in particular in the radial direction relative to the rotation axis, and is in particular pressed against the housing sealing surface. At least one sealing element also undergoes elastic deformation, in particular in the region of the housing sealing surface, which additionally increases the clamping force in the sealing groove.

[0016] An embodiment of a sealing cross-section, wherein the sealing cross-section has a first thickness and a second thickness, the second thickness being less than the first thickness, wherein at least one sealing element having the first thickness is arranged at the bottom of the groove, enables additional functional integration, in particular integration of the sealing element itself. With the first thickness, at least one sealing element is arranged at the radial bottom of the groove. At least one sealing element is stably and reliably clamped in the groove. In particular, the first thickness is at least as large as the groove width at the bottom of the groove. In particular, the first thickness is at least 101%, in particular at least 102%, in particular at least 105%, in particular at least 110%, and in particular at most 115% of the groove width.

[0017] The second thickness is less than the groove width, in particular at most 85%, in particular at most 90%, in particular at most 95%, and in particular at most 98% of the groove width. In particular, the second thickness is at least 30% of the groove width and at least 50% of the groove width. Due to the second thickness, at least one sealing element can advantageously be arranged to be movable in the sealing groove. The ratio of the second thickness to the first thickness is in particular at least 0.75, in particular at least 0.8, in particular at least 0.85, in particular at least 0.9, in particular at least 0.95, and in particular at most 0.98.

[0018] The second thickness is particularly formed in the sealing lip region. In particular, the sealing lip can be designed to be gradually thinner outwardly in the radial direction relative to the rotation axis, that is, the second thickness decreases, in particular continuously decreases.

[0019] Along the depth direction of the groove, that is, in particular in the radial direction relative to the rotation axis of the rotating component, at least one sealing element protrudes from the groove, and its protruding height is in particular at least 2% of the groove depth, in particular at most 20%, in particular at most 15%, in particular at most 10%, and in particular at most 5%.

[0020] An embodiment of at least one sealing element is designed as an integral circumferential molded seal having two axial sections and two circumferential sections, which enables the integration of additional functions of the sealing of the rotating component. At least one sealing element is designed as an endless circumferential molded seal. The arrangement of the molded seal on the rotating component can be carried out in a predetermined, fail-safe manner. The assembly of the molded seal on the rotating component is simplified. The molded seal is particularly clearly defined on the rotating component, especially around the passage pipe. In particular, the molded seal has two axial sections and two circumferential sections, which are alternately arranged and interconnected along the molded seal. Each of the circumferential sections is arranged about the circumference of the rotation axis, and in particular, along the circumferential line around the rotation axis in a plane perpendicular to the rotation axis. In particular, the circumferential section is arranged in the end face groove of the rotating component.

[0021] An embodiment in which the at least one clamping element is designed as a clamping disc is uncomplicated. In particular, the clamping disc enables the at least one sealing element to be clamped completely in the groove, in particular uniformly in the circumferential direction. The clamping element is annular, in particular has an annular shoulder. The at least one clamping element is detachably screwed to the rotating component, in particular with at least one and in particular with a plurality of fastening screws.

[0022] The compressed air supply with a compressed air connection on the housing and / or at least one housing side cover is of uncomplicated design. In particular, the compressed air supply has a compressed air connection on which a valve, in particular a valve with a one-way function, can be arranged. There can also be a plurality of compressed air connections, which are mounted on the housing and / or the housing side cover. At least one compressed air connection can be used to feed compressed air or another gas into the bulk material diverter valve in a targeted manner, in particular into the housing, in order to ensure that at least one sealing element in the end face recess is pressurized with compressed air. The at least one compressed air connection has a robust design, in particular ensuring a simple supply of compressed air, in particular via a standardized connection.

[0023] A bulk material diverter valve with a housing, each end face being closed by a housing side cover, wherein a pressure chamber is defined between at least one housing side cover and a rotating component, simplifying the accessibility of the rotating component in the housing. In addition, the housing side cover mounted on the end face, in particular detachably mounted, is used to define and limit the pressure chamber in the housing. The respective pressure chamber is defined between the rotating component and the housing side cover at the end face and is sealed with at least one sealing element. Thus, the at least one sealing element not only prevents bulk material, conveying gas and / or water from entering the interior of the bulk material diverter valve, in particular preventing them from entering between the housing and the rotating component, but also enables the additional use of the end face installation space in the housing as a pressure chamber. The pressure chamber is sealed in particular by pressing the sealing lip of at least one sealing element against the outer surface of the housing.

[0024] In particular, when at least one sealing element is designed as an integral circumferential profile seal with two axial sections and two circumferential sections, in particular the sealing cross section has a first thickness and a second thickness, wherein the second thickness is less than the first thickness, wherein the at least one sealing element with the first thickness is arranged at the bottom of the groove, and the circumferential section in particular only extends partially and in particular does not extend completely along the circumference, the pressure chambers arranged on the end face are connected to one another. In this respect, a single sealed pressure chamber is achieved in the housing.

[0025] A bulk material diverter valve, in which two pressure chambers are formed, each of which is sealed at the housing by at least one sealing element, so that the pressure chambers can be advantageously utilized. Therefore, two pressure chambers are arranged on two end faces between a rotating component and a side cover of the housing. The two pressure chambers are designed separately from each other and, in particular, are isolated from each other in terms of fluid. In particular, there are two sealing elements, each of which is designed as an integral circumferential molded seal, having two axial sections and two circumferential sections, in particular, the sealing cross section has a first thickness and a second thickness, wherein the second thickness is less than the first thickness, wherein the at least one sealing element having the first thickness is arranged at the bottom of the groove. The sealing elements are arranged on the rotating component in such a way that their circumferential sections complement each other to form an annular sealing arrangement. In particular, the rotating component is completely sealed on the housing with the corresponding circumferential sections of the sealing elements.

[0026] Alternatively, a circumferential, in particular closed, annular sealing ring may be attached to the end face of the rotating component, which enables the respective pressure chambers to be sealed separately, so that two separate pressure chambers exist on the end face.

[0027] A bulk material diverter valve, in which the pressure chambers are directly connected to each other via a pressure balancing element, enabling direct and simplified pressure balancing between the pressure chambers. The pressure balancing element is designed to be integral with a rotating component, in particular as a fluid connection element, in particular as a fluid channel. Depending on the geometry of the rotating component, the fluid channel can be designed as a tubular connection connecting two end walls of the rotating component. The tube is oriented parallel to the axis of rotation of the rotating component. The tube is also called an axial tube. If the rotating component is implemented as a solid component, the fluid channel can also be designed as a through hole.

[0028] At least one pressure sensor is fluidically connected to at least one pressure chamber and can advantageously monitor the pressure of at least one pressure chamber. In particular, it has been recognized that such pressure monitoring can be advantageously used to monitor the function of the sealing device. An unexpected drop in pressure in the pressure chamber may be due to the latter not being sealed and therefore not ensuring the sealing of the rotating part in the housing. Therefore, the monitoring of the corresponding pressure signal is particularly used to check the function of the bulk material diverter valve. In particular, a plurality of pressure chambers, in particular all pressure chambers, are each independently pressure-monitored by a separate pressure sensor. This enables targeted function monitoring. If the pressure chambers are directly fluidically connected to each other, one pressure sensor is sufficient. This reduces the investment costs.

[0029] The features indicated in the patent claims and the features indicated in the exemplary embodiments of the bulk material diverter valve according to the utility model are each suitable (whether used alone or in combination with each other) for further realizing the subject matter of the utility model. The respective combination of features does not represent any limitation to the further implementation of the subject matter of the utility model, but is essentially only exemplary. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Additional features, advantages and details of the invention will become apparent from the following description of exemplary embodiments with reference to the accompanying drawings.

[0031] Figure 1 shows a perspective exploded view of a bulk material diverter valve according to the utility model,

[0032] Figure 2 Shows Figure 1 A cross-sectional view of a bulk material diverter valve in a plane perpendicular to the axis of rotation of the rotating part,

[0033] Figure 3 Shown according to Figure 2 The cross-sectional view along the section line III-III in FIG.

[0034] Figure 4 Shows Figure 3 Enlarged detail image of detail IV. DETAILED DESCRIPTION

[0035] exist Figures 1 to 4 The diverter valve 1 shown in the figure is used for conveying bulk materials. The diverter valve 1 is a bulk material diverter valve. The bulk materials are in particular granular and / or powdered materials, in particular plastic granules or granular and / or powdered foods. The bulk materials are conveyed by pneumatic means, in particular by adding water and / or using wet bulk materials.

[0036] The diverter valve 1 is designed as a three-way diverter valve. The diverter valve 1 has a housing 2, which has a bulk material feed inlet 3 and two bulk material discharge openings 4, 5. The bulk material feed inlet 3 is used to feed bulk material into the diverter valve 1. The bulk material discharge openings 4, 5 are used to discharge bulk material from the diverter valve 1. The bulk material feed inlet 3 and the bulk material discharge openings 4, 5, in particular their center lines, define a conveying plane.

[0037] The housing 2 has a cylindrical interior space 9 relative to a central longitudinal axis 8. The bulk material inlet 3 and the bulk material outlet 4, 5 open into the interior space 9. The housing 2 has a pipe socket 10 with a fastening flange 11 associated with the bulk material inlet 3 and the bulk material outlet 4, 5. The pipe socket 10 is respectively formed in one piece on the housing. The diverter valve 1 can advantageously be integrated into and / or connected to a conveying line, in particular a pneumatic conveying line, by means of the pipe socket 10 and the fastening flange 11. The housing 2 is manufactured in one piece, in particular as a metal casting. It is also conceivable to weld the pipe socket 10 to the housing.

[0038] The rotating member 6 is arranged in the housing 2. The rotating member 6 is arranged in the housing rotatably relative to the rotation axis 7, which is arranged perpendicular to the conveying plane. The rotating member 6 is arranged concentrically relative to the central longitudinal axis 8 in the inner space 9, so that the central longitudinal axis 8 and the rotation axis 7 coincide.

[0039] The rotating part 6 is of cylindrical design with respect to the rotation axis 7. The rotating part 6 has a passage duct 12 which extends transversely, in particular perpendicularly, to the rotation axis 7. Depending on the rotational position of the rotating part 6 relative to the rotation axis 7, the bulk material feed opening 3 and the bulk material discharge opening 4 are connected to one another via the passage duct, or the bulk material feed opening 3 and the bulk material discharge opening 5 are connected to one another for conveying bulk material. The respective other bulk material discharge opening 5 or 4 is then sealed by the rotating part 6, i.e. is reliably closed by the rotating part 6.

[0040] The housing 2 has a first housing side cover 13 and a second housing side cover 14 on the end faces relative to the cylindrical inner space 9. The housing side covers 13, 14 each have a bearing opening oriented concentrically with the central longitudinal axis 8 of the housing 2, which is used to accommodate a rotation bearing journal 15 of the rotation component 6. The rotation component 6 is installed in the housing 2 so that it can rotate around the rotation axis 7. One of the bearing journals 15, in particular Figure 3 The bearing journal 15 shown on the left side is mechanically connected to a drive device 16 (especially an electric motor). In particular, a coupling element not shown is provided for the mechanical connection between the drive device 16 and the rotating component 6.

[0041] The housing side covers 13 , 14 are each detachably fastened to the end face of the housing 2 , in particular, are screwed in with fastening screws 18 , and are sealed by a circumferential side cover seal 19 .

[0042] The first housing side cover 13 has a compressed air connection 40 for supplying compressed air to the intermediate space between the housing 2 of the diverter valve 1 and the rotary valve 6. In addition or alternatively, the compressed air connection 40 can also be arranged on the second housing side cover 14 and / or in the housing 2. A valve (not shown) can be installed at the compressed air connection 40 for targeted pressurization. The valve can have a one-way non-return function.

[0043] The rotating component 6 has two end walls 20, 21 arranged opposite to each other, each of which has a bearing journal 15 fastened (in particular pressed into) therein. The first end wall 20 faces the first housing side cover 13 when the rotating component is installed in the first housing side cover 13. Accordingly, when the rotating component 6 is installed, the second end wall 21 faces the second housing side cover 14, in particular the drive device 16. The end walls 20, 21 are each oriented perpendicular to the rotation axis 7. A first pressure chamber 41 is defined between the first end wall 20, the first housing side cover 13 and the housing 2. Accordingly, a second pressure chamber 42 is defined between the second housing side cover 14, the second end wall 21 and the housing 2.

[0044] The pressure chambers 41, 42 are directly connected to one another via an axial tube 43. The axial tube 43 is parallel to the rotation axis 7 of the rotating component 6 and is in particular clamped in a corresponding receiving hole in the end wall 20, 21. The axial tube 43 forms a pressure equalization element, in particular between the pressure chambers 41, 42. The fluid channel in the form of the axial tube 43 is optional. It is conceivable that the two pressure chambers 41, 42 are configured so as to be fluidically separated from one another.

[0045] A pressure sensor 44, shown purely schematically, is arranged in the first pressure chamber 41 to measure the pressure in the first pressure chamber. It is also conceivable that the pressure sensor 44 is arranged outside the first pressure chamber 41, in particular along or parallel to the pressure line connected to the compressed air connection 40. In either case, the pressure sensor 44 has a suitable fluid connection with the first pressure chamber 41, which is necessary for the pressure measurement. In addition or as an alternative, the pressure sensor 44 can also be arranged in the second pressure chamber 42 and / or the axial tube 43. The pressure sensor 44 has a signal connection with a control unit not shown in detail. The signal connection can be wired and / or wireless. The pressure signal measured by the pressure sensor 44 can be used to monitor the function of the bulk material diverter valve, in particular the effective seal between the housing 2 and the rotating part 6. If a pressure drop, in particular a sudden pressure drop, occurs in one of the pressure chambers 41, 42, it can be assumed that the seal of the pressure chambers 41, 42 is insufficient and / or faulty.

[0046] It is also conceivable that only one pressure chamber 41 or 42 is present.

[0047] The end walls 20, 21 are connected to each other by a first transverse wall 22 and a second transverse wall 23. The transverse walls 22, 23 each extend parallel to the rotation axis 7. The transverse walls 22, 23 define a through-flow opening, i.e. a channel cross section, of the passage duct 12. In the region of the transverse walls 22, 23, a cylinder liner segment wall 24, 25 is arranged between each of the end walls 20, 21 to provide a cylinder liner outer surface for the rotation component 6 in these regions.

[0048] Especially from Figure 2 It can be seen that the first transverse wall 22 and the first cylinder liner segment wall 24 are designed in one piece. The second transverse wall 23 and the second cylinder liner segment wall 25 are designed in one piece and form a hollow cylinder segment. Each of the end face walls 20, 21 has a circumferential end face groove 26, which is integrally formed on the respective end face walls 20, 21.

[0049] The end face groove 26 forms a shoulder. The shoulder is open outwards in a radial direction with respect to the axis of rotation 7. The groove has a depth t which is oriented transversely, in particular perpendicularly, to the axis of rotation 7.

[0050] The rotating part 6 has two sealing grooves 29, each of which faces the inner surface 28 of the housing 2. The sealing grooves 29 extend parallel to the rotation axis 7. The sealing grooves 29 are linear and are also called longitudinal grooves or external grooves. The sealing grooves have a rectangular groove cross section, with a groove width and a groove depth. The groove cross section is radially oriented relative to the rotation axis 7, that is, the groove opening faces the inner surface 28 of the housing 2 in the radial direction. Accordingly, the groove depth direction is radially oriented relative to the rotation axis 7. The groove width direction is oriented perpendicular to the radial direction, especially in the tangent direction at the intersection point with the radial direction of the inner surface 28 of the housing 2.

[0051] The rotating component 6 has two sealing elements 30, 31. Both sealing elements 30, 31 are made of sealing material. Each of the sealing elements 30, 31 has two axial sections 32 and two circumferential sections 33, which are arranged alternately and alternately with each other, so that each of the sealing elements 30, 31 is designed as an endless circumferential seal.

[0052] Each of the sealing elements 30, 31 is arranged in the outer groove 29 with its axial section 32. In particular, each of the two sealing elements 30, 31 is arranged in the outer groove 29 with its axial section 32. The axial section 32 extends parallel to the rotation axis 7. The circumferential sections 33 each extend in the circumferential direction around the rotation axis and are positioned to abut against the groove 26 of the end face walls 20, 21. In the rotation direction around the rotation axis 7, the circumferential section 33 of the first sealing element 30 extends about 200°. Correspondingly, the rotation angle of the circumferential section 33 of the second sealing element 31 around the rotation axis 7 is about 160°. Depending on the position of the outer groove 29 in the circumferential direction of the rotation axis 7, the corresponding opening angles of the circumferential sections 33 of the sealing elements 30, 31 can also vary.

[0053] The circumferential segments 33 are each axially clamped on the groove 26 by an annular clamping disc 34 and are particularly compressed in the axial direction. The clamping disc 34 is a clamping element. In particular, the clamping disc 34 can be removably fastened to the end wall 20, 21 by means of a fastening element, in particular a countersunk screw 35. In particular, the clamping disc 34 has an annular shoulder 45 in order to simplify assembly and fastening to the respective end wall 20, 21.

[0054] The clamping disc 34 can be attached to the end wall 20, 21 by means of the annular shoulder 45 so as to form a circumferential end face sealing groove 46 with the groove 26 relative to the rotation shaft 7. Depending on the axial depth of the annular shoulder 45, the groove width b defined between the groove 26 and the annular shoulder 45 can be variably determined.

[0055] In particular, the clamping disk 34 enables the circumferential section 33 to be variably pressed against the end wall 20. The clamping disk 34 and the groove 26 form a circumferential groove in which the circumferential section 33 is arranged.

[0056] The sealing element 30, 31 has a sealing cross section with a notch 36. The notch 36 is optional. The notch 36 is basically designed in a V-shape, forming a notch in the sealing cross section. The notch 36 extends in the sealing element 30, 31 inserted into the respective end face sealing groove 46, in the groove width direction, that is, transversely, in particular perpendicular to the groove depth direction. The sealing cross section is basically designed in a B-shape or a K-shape.

[0057] The sealing section also has a groove bottom sealing surface 37. The groove bottom sealing surface 37 is flat and extends along a side groove wall of the groove 26 and along the groove bottom, that is, the bottom surface of the groove 26 in at least some areas.

[0058] The sealing cross section also has a curved, in particular convex housing sealing surface 38. The housing sealing surface 38 is used to provide a sealing contact between the sealing elements 30, 31 and the inner surface 28 of the housing 2. In particular, the housing sealing surface 38 protrudes from the groove 26 in the radial direction about the rotation axis 7 and is elastically deformed when in contact with the inner surface 28, i.e., is pressed into the groove 26.

[0059] The notch 36 divides the sealing cross section into a sealing inner portion 41 and a sealing outer portion 42. The sealing inner portion 41 arranges the sealing element 30 at the bottom of the groove, and the sealing outer portion 42 makes the sealing element 30 face the housing 2. The sealing inner portion 41 has a first thickness D 1 , the sealing outer portion 42 has a second thickness D 2 The second thickness D 2 Less than the first thickness D 1 .

[0060] The sealing outer portion 42 forms a sealing lip and is particularly structurally flexible. The housing sealing surface 38 is particularly arranged on the sealing lip.

[0061] Since the sealing element 30 is clamped between the first end wall 20 and the clamping disc 34 in the axial direction of the rotating shaft 7, the sealing element 30 is elastically deformed and pressed out of the groove 26 in the radial direction and pressed against the inner surface 28 of the housing 2. This improves the sealing effect. In addition or alternatively, the first pressure chamber 41 and / or the second pressure chamber 42 can be subjected to compressed gas, in particular compressed air. Figure 4 As particularly shown, the corresponding pressurized medium can reach the sealing element 30 via the radial gap 47 between the clamping disc 34 and the first housing side cover 13. There, the pressurized fluid can reach the recess 36 in particular and deform the sealing element 30 elastically, so that the recess 36 is pressed open in the radial direction and the sealing element 30 is pressed against the inner surface 28 by means of the housing sealing surface 38.

[0062] In the bulk material diverter valve according to the invention, several mechanisms are available, in particular mechanisms that can be actuated independently of one another, in order to arrange the sealing element 30 in the groove 26 with an increased contact pressure. This improves the sealing effect.

[0063] Reference numerals:

[0064] 1-Diverter valve

[0065] 2 – Shell

[0066] 3 – Bulk material feed port

[0067] 4 – Bulk material outlet

[0068] 5 – Bulk material outlet

[0069] 6 – Rotational Components

[0070] 7 – Rotation axis

[0071] 8 – Central longitudinal axis

[0072] 9 – Interior Space

[0073] 10 – Tube socket

[0074] 11 – Fastening flange

[0075] 12 – Access Pipe

[0076] 13 – First housing side cover

[0077] 14 – Second housing side cover

[0078] 15 – Bearing journal

[0079] 16 – Drive

[0080] 17 – Connecting element

[0081] 18 – Fastening screw

[0082] 19 – Side cover seal

[0083] 20 – First end wall

[0084] 21- Second end wall

[0085] 22 – first transverse wall

[0086] 23 – Second transverse wall

[0087] 24 – First cylinder liner segment wall

[0088] 25 – Second cylinder liner segment wall

[0089] 26 – Groove

[0090] 27 – Connecting Strip

[0091] 28 – Inner surface

[0092] 29 – Seal groove

[0093] 30 – First sealing element

[0094] 31 – Second sealing element

[0095] 32 – Axial section

[0096] 33 – Circumferential Segment

[0097] 34 – Clamping the disc

[0098] 35 – Countersunk screw

[0099] 36 – Notch

[0100] 37 – Groove bottom sealing surface

[0101] 38 – Housing sealing surface

[0102] 40 – Compressed air connection

[0103] 41 – First Pressure Chamber

[0104] 42 – Second pressure chamber

[0105] 43 – Axial Pipe

[0106] 44 – Pressure Sensor

[0107] 45 – Circular Shoulder

[0108] 46-end face seal groove

[0109] 47 – Radial clearance

[0110] D1 - first thickness of the sealing elements 30, 31

[0111] D2—Second thickness of the sealing elements 30, 31

[0112] t – Depth of groove 26

Claims

1. A bulk material diverter valve, comprising: a. a housing (2), the housing having a bulk material feed port (3) and a plurality of bulk material discharge ports (4, 5); b. a self-rotating component (6), which is arranged in the housing (2) so as to be rotatable about a self-rotating axis (7) and has a passage pipe (12), which connects the bulk material feed port (3) to one of the bulk material discharge ports (4, 5) to convey the bulk material according to the self-rotating position of the self-rotating component (6) relative to the self-rotating axis (7); c. A sealing device for circumferentially sealing a rotating component (6) within a housing (2), comprising at least one sealing element (30, 31) arranged in an end face groove (26) of the rotating component (6), wherein the at least one sealing element (30, 31) is clamped in the groove (26) by at least one clamping element, and the at least one clamping element is capable of being confined on the rotating component (6).

2. The bulk material diverter valve according to claim 1, characterized in that The at least one sealing element (30, 31) is fluidly connected to a compressed air supply.

3. The bulk material diverter valve according to claim 1, characterized in that The at least one sealing element (30, 31) has a sealing lip.

4. The bulk material diverter valve according to claim 3, wherein the sealing lip is formed by a sealing cross section having a notch (36).

5. The bulk material diverter valve according to claim 4, characterized in that The sealing section has a housing sealing surface (38), whereby the respective sealing element (30, 31) abuts against an inner surface (28) of the housing (2) in a sealing manner.

6. The bulk material diverter valve according to claim 4, characterized in that The sealing cross section has a first thickness (D1) and a second thickness (D2), wherein the second thickness is smaller than the first thickness, wherein the at least one sealing element (30, 31) having the first thickness (D1) is arranged at the bottom of the groove.

7. The bulk material diverter valve according to claim 1, characterized in that The at least one sealing element (30, 31) is designed as a one-piece circumferential profile seal having two axial sections (32) and two circumferential sections (33).

8. The bulk material diverter valve according to claim 1, characterized in that At least one clamping element is designed as a clamping disc (34).

9. The bulk material diverter valve according to claim 2, characterized in that The compressed air supply has a compressed air connection (40) on at least one of the housing (2) and at least one housing side cover (13, 14).

10. The bulk material diverter valve according to claim 1, characterized in that The housing (2) is closed at each end face by means of a housing side cover (13, 14), wherein a pressure chamber (41, 42) is defined between at least one housing side cover (13, 14) and the rotating component (6).

11. The bulk material diverter valve according to claim 10, characterized in that Two pressure chambers (41, 42) are formed, each of which is sealed at the housing (2) by the at least one sealing element (30, 31).

12. The bulk material diverter valve according to claim 11, characterized in that The pressure chambers (41, 42) are directly connected to one another by means of a pressure equalization element (43).

13. The bulk material diverter valve according to claim 10, characterized in that At least one pressure chamber (41, 42) is fluidically connected to a pressure sensor (44).

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