Sealing device and assembly comprising sealing device and used for conveying bulk materials

Abstract

A sealing device for an assembly for transporting bulk material, comprising a housing (2) having a bulk material inlet (3) and at least one bulk material outlet (4, 5), a moving part displaceably arranged in the housing (2), and a sealing groove (28) formed on the housing (2) or on the moving part, in which at least one sealing element (29, 30; 29a), wherein the at least one sealing element (29, 30; 29a) has a sealing cross-section with an outer contour which is concave at least in some sections, and the fixing rod (38; 38a), which is fixed by means of a fixing rod (38; 38a) connects the at least one sealing element (29; 30); 29a) is clamped in the closed groove (28; 28a), wherein the fixing rod (38; 38a) abuts against the concave outer contour at least in some sections.

Description

[0001] This utility model patent application claims the priority of German patent application DE 10 2023 206 882.6, the content of which is incorporated herein by reference. Technical Field

[0002] The utility model relates to a sealing device and a component for conveying bulk materials, in particular to a diverter valve (diverter) for bulk materials comprising such a sealing device. Background Art

[0003] DE 34 14 074 A1 discloses an annular seal for a bulk material diverter valve, wherein the annular seal has a notch to improve the sealing properties. It has been shown that, in particular at low conveying pressures, it cannot be guaranteed that the compression forces acting on the seal will reliably close the gap between the housing and the rotating body. In particular, when the diverter valve is switched, i.e. when the rotating part is rotating, bulk material can enter the sealing groove and in particular pull the annular seal out of the sealing groove. Due to the associated wear of the seal, a high contact pressure of the seal in the sealing groove is undesirable. Wear leads to faster wear of the seal and contamination of the conveyed bulk material. Adhesion of the seal in the sealing groove is disadvantageous for the unpredictable duration of replacing the seal and the adhesive.

[0004] EP 0 344 584 B1 and DE 199 52 435 A1 disclose bulk material diverter valves with a seal which is further pressed into a sealing groove due to pressure. Complex pressure channels are required to pressurize the seal. The design of such bulk material diverter valves is complex. Utility Model Content

[0005] The object of the invention is to provide a reliable seal for an assembly for conveying bulk material, in particular along a conveying line, wherein the seal is particularly simple and robust in design and seals off bulk material and water from the conveying flow particularly reliably.

[0006] The utility model achieves this object through a sealing device of a component for conveying bulk materials and a component for conveying bulk materials including such a sealing device, wherein the sealing device comprises: a shell having a bulk material feed port and at least one bulk material discharge port; a moving component movably arranged in the shell; a sealing groove formed on the shell or on the moving component, wherein at least one sealing element is arranged in the sealing groove, wherein the sealing cross-section of at least one sealing element has an outer contour that is concave at least in a partial section; a fixing rod, at least one sealing element is clamped in the sealing groove by the fixing rod, wherein the fixing rod abuts against the concave outer contour at least in a partial section, wherein the moving component is designed as a self-rotating component, and the self-rotating component is rotatably arranged in the shell about a rotation axis.

[0007] According to the invention, it has been found that a bulk material conveying assembly is advantageously sealed, in particular reliably sealed against water and bulk material, if the sealing device comprises at least one sealing element arranged in a sealing groove, the sealing element being clamped in the sealing groove by a fixing rod. The fixing rod is an elongated, in particular one-piece fixing element. Surprisingly, it has been found that the fixing of the sealing element in the sealing groove can be ensured mechanically, in particular by clamping, in a simple and reliable manner.

[0008] In particular, it has been recognized that sealing devices and assemblies for bulk material conveying (in particular along conveying lines, in particular in tubular conveying systems for bulk materials) are advantageous. Such bulk material conveying is, for example, pneumatic bulk material conveying, in particular bulk material conveying with the aid of a pressurized fluid. The fluid may be a gas and / or a liquid. In particular, bulk material conveying includes pneumatic conveying, in particular pneumatic wet conveying of bulk materials and hydraulic conveying of bulk materials.

[0009] The component comprises a housing having a bulk material feed opening and at least one bulk material discharge opening. The housing may also have a plurality of (in particular exactly two) bulk material discharge openings. The movable component is displaceably arranged in the housing. The movable component is in particular an actuating element, which is arranged to be able to switch between different actuating positions. In particular, the movable component is arranged in the housing so as to be able to rotate around a rotation axis or to be linearly displaced about a longitudinal axis. Accordingly, the movable component can be designed as a rotating component, a flap or a sliding plate. The rotating component has a passage duct, which connects the bulk material feed opening with one of the bulk material discharge openings to convey the bulk material, depending on the rotation position of the rotating component relative to the rotation axis. This component is, for example, a diverter valve or a gate valve.

[0010] In particular, the moving part (in particular the rotating part) is coupled to the drive device. In particular, the moving part is arranged in the housing so as to be driven by the motor. The rotating part is particularly designed to be cylindrical or frustoconical about the rotation axis.

[0011] In particular, the housing has an inner hole, into which the rotating component is inserted. The inner contour of the inner hole corresponds to the outer contour of the rotating component. Accordingly, the inner contour of the inner hole is designed to be cylindrical and / or conical. The sleeve-shaped connecting element can be arranged at the bulk material feed inlet and / or the bulk material discharge outlet, in particular integrally formed on the housing. The connecting elements can each 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 perpendicularly) to the conveying plane.

[0012] The sealing groove can be formed on the moving part and / or on the housing. The sealing groove is designed as an external groove, i.e. a recess on the outer side of the moving part or the inner side of the housing, and extends in particular in the longitudinal direction (i.e. linearly). The longitudinal direction can be oriented, for example, parallel to the rotation axis of the rotating part or transversely (in particular perpendicularly) to the displacement direction of the sliding plate. The sealing groove is also called a longitudinal groove.

[0013] The profile design of the fixing rod is simple. The fixing rod can be produced in a cost-effective manner, in particular as an endless profile produced from plastic material or metal in a continuous manufacturing process and cut to the required length along the longitudinal profile axis. The fixing rod has a profile cross section which is particularly designed as a solid cross section. Alternatively, the fixing rod can also be designed with a hollow cross section as a hollow rod or an open profile cross section as a profile rod.

[0014] The profile cross section of the fixing rod is circular, in particular the profile cross section of the outer side thereof is circular. It is understood that the profile cross section can also be non-circular, in particular elliptical or polygonal. Thus, in particular, a targeted expansion force can be applied by the fixing rod on the sealing cross section of the sealing element.

[0015] The fixing rod enables simple fixing of at least one sealing element. The fixing rod is particularly arranged along the sealing groove, particularly parallel to the rotation axis of the rotating component or transversely, particularly perpendicularly to the displacement direction of the sliding plate.

[0016] The fixing rod improves the clamping force of the at least one sealing element in the sealing groove, in particular by force fit and / or friction fit. In particular, it has been recognized that a higher clamping force can be applied to the at least one sealing element by means of the fixing rod. The clamping force of the at least one sealing element in the sealing groove is also increased, in particular greater than the clamping force which is generated only by elastic deformation of the at least one sealing element in the sealing groove. The at least one sealing element is in particular made of a sealing material, in particular of an elastomeric material, in particular of silicone rubber.

[0017] The fixing rod has a fixing rod length along its profile longitudinal axis which is at least twice, in particular at least three times, in particular at least five times, in particular at least ten times, in particular at least twenty times, in particular at least fifty times, in particular at least one hundred times, and in particular at most one thousand times, greater than the maximum diameter of the fixing rod. In the case of a circular outer contour of the cross section of the fixing rod, the maximum diameter is the diameter of the circle. In the case of a polygonal outer contour, the maximum diameter corresponds to the maximum diagonal. If the fixing rod has an open profile cross section, the maximum diameter can be determined, for example, using the center of gravity and the maximum distance from the center of gravity to the outer contour.

[0018] In particular, the fixing rod is made of a harder material than the sealing material of the at least one sealing element. This in particular ensures that the fixing rod is suitable for deforming the sealing element. In particular, the fixing rod is made of a metallic material, in particular steel.

[0019] The sealing groove has a groove length in its longitudinal direction. The length of the fixing rod is at least 50% of the groove length, in particular at least 70%, in particular at least 80%, in particular at least 90%, in particular at least 95%, in particular the entire groove length or longer. In particular, the fixing rod protrudes longitudinally from the end face of the sealing groove.

[0020] At least one sealing element has a sealing cross section, the outer contour of which is concave at least in sections. The sealing cross section is defined in a plane perpendicular to the longitudinal axis of the at least one sealing element. The arrangement of the fixing rod on the concave outer contour on the at least one sealing element is simplified. The clamping force that can be achieved with the fixing rod is increased. In particular, the mechanical interaction between the fixing rod and the at least one sealing element is improved.

[0021] The mechanical clamping of the at least one sealing element is additionally improved if the securing rod is arranged at least in sections on the concave outer contour.

[0022] A sealing device in which the concave outer contour is designed as a recess ensures a particularly advantageous clamping of at least one sealing element by means of a fixing rod. The fixing rod can be arranged in a recess of the sealing cross section of the at least one sealing element. The recess is formed by the concave outer contour. The recess forms a defined deformation area of ​​the at least one sealing element. The at least one sealing element can advantageously be deformed in the recess by means of the fixing rod. The at least one sealing element can be elastically deformed and additionally pressed into the sealing groove. The recess is designed to be V-shaped or U-shaped in the sealing cross section. Due to the recess, the profile of the sealing cross section is essentially K-shaped or B-shaped. The recess extends in particular transversely to the depth direction of the sealing groove, in particular perpendicularly to the depth direction, i.e., along the width direction of the sealing groove.

[0023] Arranging a plurality of sealing elements, in particular exactly two sealing elements, in the sealing groove enables an advantageous functional integration of a plurality of seals and their common clamping by means of one, in particular a single, fixing rod in the sealing groove. In particular, different molded seals can be arranged in the sealing groove and combined with one another.

[0024] If multiple (especially all) sealing elements are designed to have a concave outer contour, especially a recess, the fixing rod can be arranged in the recess of multiple (especially all) sealing elements. Multiple (especially all) sealing elements can be elastically deformed using one (especially single) fixing rod.

[0025] Since a plurality of sealing elements are arranged in the sealing groove, the total number of the sealing grooves is reduced, and the manufacturing workload of producing the sealing device is reduced.

[0026] The sealing element has mutually facing concave outer contours in the sealing groove, wherein the securing rod is arranged at least in sections on a plurality, in particular all, of the concave outer contours, an arrangement which is particularly compact and space-saving.

[0027] An embodiment of a sealing cross section, wherein the sealing cross section has a sealing surface, with which the corresponding sealing element bears against a contact surface of a moving part or a housing in a sealing manner, thereby ensuring an additional improved sealing of the moving part (in particular a rotating part) relative to the housing (in particular on the inner surface of the housing). At least one sealing element has a sealing surface, which is in direct sealing contact with the contact surface of the corresponding other part. The contact surface is in particular the inner surface of the housing. The sealing surface is also referred to as the housing sealing surface. The sealing surface has in particular a convex outer contour, in particular is configured as a semicircle, in particular without edges (free of edges). The sealing surface protrudes from the sealing groove (in particular radially with respect to the axis of rotation) and is in particular pressed against the sealing surface. At least one sealing element is also elastically deformed, in particular in the region of the sealing surface, which further increases the clamping force in the sealing groove.

[0028] An embodiment of the sealing cross section has a first thickness and a second thickness that is less than the first thickness, wherein at least one sealing element having the second thickness is arranged at the groove base, enabling the integration of additional functions (in particular on the sealing element itself). The sealing cross section has a first thickness and a second thickness that is less than the first thickness. At least one sealing element is arranged at the groove base of the sealing groove with the second thickness. At least one sealing element is stably and reliably clamped in the sealing groove. In particular, the second thickness is at least as large as the groove width of the sealing groove at the groove base. In particular, the second thickness is at least 101%, in particular at least 102%, in particular at least 105%, in particular at least 110%, in particular at most 115% of the groove width of the sealing groove.

[0029] The first thickness is smaller than the groove width of the sealing groove, in particular at most 85%, in particular at most 90%, in particular at most 95%, in particular at most 98% of the groove width of the sealing groove. In particular, the first thickness is at least 80% of the groove width. Due to the first thickness, at least one sealing element is arranged to be movable in the sealing groove. The ratio of the first thickness to the second 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, in particular at most 0.98.

[0030] In the groove depth direction, the sealing element protrudes from the sealing groove, in particular by at least 2%, in particular by at most 20%, in particular by at most 15%, in particular by at most 10%, in particular by at most 5% of the groove depth.

[0031] A sealing device in which the fixing rod is fastened to the moving part enables a reliable arrangement of the fixing rod at the moving part. In this case, the sealing groove is arranged on the moving part. Since the fixing rod protrudes axially on the sealing groove, in particular on both sides, the fixing rod itself can be fastened to the rotating part. Therefore, the fixing rod protrudes from the end face of the sealing groove and can be advantageously clamped in a corresponding recess or hole in the end face wall of the rotating part. In particular, the assembly and disassembly of the fixing rod in the sealing groove is simplified. The fixing rod can be inserted into the external groove axially through the hole in the end face wall of the rotating part.

[0032] An embodiment in which at least one sealing element is designed as an integral circumferential molded seal enables the integration of an additional function of sealing a moving part (in particular in the form of a rotating part). At least one sealing element is a circumferential molded seal and is therefore designed as a loop. The molded seal is arranged on the rotating part in a predefined and fail-safe manner. The molded seal is explicitly fixed to the moving part (in particular the rotating part). In particular, the molded seal has two axial sections and two circumferential sections, which are arranged alternately one after another along the molded seal and are connected to each other. The circumferential sections are each arranged circumferentially about the axis of rotation in a plane perpendicular to the axis of rotation. In particular, the circumferential sections are arranged in an end face recess of the rotating part.

[0033] Sealing grooves with a rectangular groove cross section are easy to produce. In particular, it has been recognized that in order to ensure a high clamping force of the sealing element in the sealing groove, no special (especially elaborate), for example dovetail-shaped groove profiles are required. The design of the sealing groove is simplified.

[0034] An assembly for conveying bulk material comprising a sealing device as described above, wherein the moving part is designed as a self-rotating part and is arranged in a housing so as to be rotatable about a rotation axis, substantially has the advantages of the sealing device referred to here. The assembly is particularly used for pneumatic conveying, in particular pneumatic wet conveying, of bulk material. It has been recognized that due to wet conveying, a mixture of bulk material and water can form in the conveying flow. Due to the sealing device, the assembly is particularly suitable for reliably sealing water and bulk material. In particular, the assembly is a bulk material diverter valve, wherein the moving part is designed as a self-rotating part and is arranged in a housing so as to be rotatable about a rotation axis.

[0035] The features specified in the patent claims and the features specified in the exemplary embodiments of the sealing device of the utility model are each suitable for further embodying the subject of the utility model alone or in combination with each other. The corresponding combination of these features does not represent a limitation on other embodiments of the subject of the utility model, but is essentially exemplary. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Further features, advantages and details of the invention emerge from the following description of exemplary embodiments with reference to the drawings.

[0037] Figure 1 shows a perspective exploded view of an assembly in the form of a bulk material diverter valve comprising a sealing device of a first exemplary embodiment,

[0038] Figure 2 Shows Figure 1 The cross section of the bulk material diverter valve in the plane perpendicular to the rotation axis of the rotating part,

[0039] Figure 3 Shows Figure 2 A magnified detailed illustration of detail III,

[0040] Figure 4 An enlarged schematic diagram showing a longitudinal section in a section including a rotating shaft and a sealing groove,

[0041] Figure 5 The second exemplary embodiment is shown. Figure 3 The corresponding sealing device has a single sealing element in the sealing groove. DETAILED DESCRIPTION

[0042] like Figures 1 to 4 The diverter valve 1 shown is used for conveying bulk materials. The diverter valve 1 is a diverter valve for bulk materials. Bulk materials are in particular granular and / or powdery materials, in particular plastic granules or granular and / or powdery foods. Bulk materials (in particular with the addition of water and / or with wet bulk materials) are conveyed pneumatically.

[0043] The diverter valve 1 is designed as a 3-way diverter valve. The diverter valve 1 comprises a housing 2 having a bulk material feed opening 3 and two bulk material discharge openings 4, 5. The bulk material feed opening 3 is used for feeding bulk material into the diverter valve 1. The bulk material discharge openings 4, 5 are used for discharging bulk material from the diverter valve 1. The bulk material feed opening 3 and the bulk material discharge openings 4, 5, in particular their center lines, define a conveying plane.

[0044] The housing 2 has a cylindrical inner bore 9 about a central longitudinal axis 8. The bulk material inlet 3 and the bulk material outlet 4, 5 open into the inner bore 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 sockets 10 are each integrally formed on the housing. The diverter valve 1 can advantageously be integrated into and / or connected to a conveying pipeline, in particular a pneumatic conveying pipeline, using the pipe sockets 10 and the fastening flanges 11. The housing 2 is manufactured in one piece, in particular as a metal casting. It is also conceivable to weld the pipe sockets 10 to the housing.

[0045] A rotary part 6 is arranged in the housing 2. The rotary part 6 is arranged in the housing 2 to be rotatable about a rotation axis 7, which is oriented perpendicular to the conveying plane. The rotary part 6 is arranged concentrically in the inner hole 9 about a central longitudinal axis 8, so that the central longitudinal axis 8 and the rotation axis 7 coincide.

[0046] The rotating part 6 has a 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 rotation 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 each other or the bulk material feed opening 3 and the bulk material discharge opening 5 are connected to each other for conveying bulk material by means of the passage duct. 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.

[0047] On each end face of the cylindrical inner hole, the housing 2 has a first housing side cover 13 and a second housing side cover 14. The first housing side cover 13 and the second housing side cover 14 each have a bearing opening oriented concentrically with the central longitudinal axis 8 of the housing 2, and the bearing opening is used to accommodate a bearing journal (bearing spigot) 15 of the rotating component 6. The rotating component 6 is installed in the housing 2 so as to be able to rotate around the rotating axis 7. One of the bearing journals 15 is mechanically coupled to a drive device 16 (in particular an electric motor). In particular, a coupling element is provided for the mechanical coupling of the drive device 16 and the rotating component 6.

[0048] The first housing side cover 13 and the second housing side cover 14 are each detachably fastened to the end face of the housing 2, in particular screwed on with fastening screws, and sealed by means of a circumferential side cover.

[0049] The self-rotating component 6 has two end walls 20, 21 arranged opposite each other, to each of which the bearing journal 15 is fastened (in particular pressed). When the self-rotating component 6 is installed in the first housing side cover 13, the first end wall 20 faces the first housing side cover 13. Correspondingly, when the self-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 perpendicularly to the self-rotating axis 7.

[0050] The end walls 20, 21 are connected to each other by means of a first transverse wall 22 and a second transverse wall 23. The first transverse wall 22 and the second transverse wall 23 each extend parallel to the rotation axis 7. The first transverse wall 22 and the second transverse wall 23 define a through-flow opening, i.e. a passage cross section, of the passage duct 12. In the region of the first transverse wall 22 and the second transverse wall 23, a first cylinder jacket section wall 24 and a second cylinder jacket section wall 25 are arranged between each end wall 20, 21, so that in these regions a cylinder jacket outer surface is provided for the rotation component 6.

[0051] Especially from Figure 2 It can be seen that the first transverse wall 22 and the first cylinder liner segment wall 24 are designed as an integral body. The second transverse wall 23 and the second cylinder liner segment wall 25 are designed as an integral body and form a hollow cylinder segment. The end face walls 20, 21 each have a circumferential end face recess 26, which is integrally formed on the respective end face walls 20, 21.

[0052] The rotating part 6 has two sealing grooves 28, each of which faces the inner surface 27 of the housing 2. The sealing grooves 28 extend parallel to the rotating axis 7. The sealing grooves 28 extend linearly and are also called longitudinal grooves. The sealing grooves 28 have a rectangular groove cross section with a groove width b N and groove depth t N The groove cross section is oriented with respect to the rotation axis 7, that is, the groove opening faces the inner surface 27 of the housing 2 in the radial direction. Therefore, the groove depth direction is oriented radially with respect to the rotation axis 7. The groove width direction is oriented perpendicular to the radial direction, in particular, it is tangent to the intersection point with the inner surface 27 of the housing 2 with respect to the radial direction.

[0053] The rotating component 6 has two sealing elements 29, 30. The two sealing elements 29, 30 are each made of a sealing material. The sealing elements 29, 30 each have two axial sections 31 and two circumferential sections 32, which are alternately arranged and alternately opposed to each other, so that the sealing elements 29, 30 are each designed as a ring-type circumferential seal.

[0054] The sealing elements 29, 30 are each arranged in the sealing groove 28 together with the axial section 31. In particular, the two sealing elements 29, 30 are each arranged in the sealing groove 28 together with their axial sections 31. The axial section 31 extends parallel to the rotation axis 7. The circumferential sections 32 each extend circumferentially around the rotation axis 7 and are positioned against the recesses 26 of the end face walls 20, 21. In the rotation direction around the rotation axis 7, the circumferential section 32 of the first sealing element 29 extends approximately 200°. Correspondingly, the rotation angle of the circumferential section 32 of the second sealing element 30 with respect to the rotation axis 7 is approximately 160°. Depending on the position of the sealing groove 28 in the circumferential direction with respect to the rotation axis 7, the corresponding opening angles of the circumferential sections 32 of the sealing elements 29, 30 may also vary.

[0055] The circumferential segments 32 are each axially clamped in the recess 26 and in particular pressed axially by means of an annular clamping disc 33. The clamping disc 33 is fastened, in particular detachably, to the end face walls 20, 21 by means of fastening elements, in particular countersunk screws.

[0056] The sealing elements 29, 30 have a sealing cross section, and the outer contour thereof is designed to be concave at least in sections, in particular, a notch 34. The notch 34 is substantially U-shaped. The notch 34 extends along the groove width direction (i.e., transversely, in particular, perpendicular to the groove depth direction) in the sealing device inserted into the sealing groove 28. The two sealing elements 29, 30 inserted into the sealing groove 28 are arranged opposite to each other so that the opening notches 34 face each other. The sealing cross section is substantially designed to be B-shaped or K-shaped.

[0057] The sealing cross section also has a curved, in particular convex housing sealing surface 35. The housing sealing surface 35 is used to provide a sealing contact between the sealing elements 29, 30 and the inner surface 27 of the housing 2. In particular, the housing sealing surface 35 protrudes radially from the sealing groove 28 with respect to the rotation axis and is elastically deformed by contact with the inner surface 27, i.e. pressed into the sealing groove 28.

[0058] The notch 34 divides the sealing cross section into a sealing inner portion 36 and a sealing outer portion 37. The sealing element 29 together with the sealing inner portion 36 is arranged in a groove base, and the sealing element 29 together with the sealing outer portion 37 faces the housing 2. The sealing inner portion 36 has a first thickness D 1 , the sealing outer portion 37 has a second thickness D 2 The second thickness D 2 Less than the first thickness D 1 .

[0059] The fixing rod 38 is used to fix the sealing element 29, 30 in the sealing groove 28. The fixing rod is particularly designed as a cylindrical rod with a solid cross section and is guided through a corresponding through hole 39 in the end wall 20, 21. The fixing rod 38 is reliably clamped on the rotating component 6 in the radial and circumferential direction with respect to the rotation axis 7, in particular on the end wall 20, 21. The clamping disc 33 ensures the axial fixation of the fixing rod 38 on the rotating component 6, in particular as Figure 4 shown.

[0060] The following references Figure 5 A second exemplary embodiment is described. Components that are structurally identical are given the same reference numerals as the previous exemplary embodiment, and reference is made here to their description. Components that are structurally different but functionally similar are given the same reference numerals with the suffix letter a.

[0061] The main difference from the previous exemplary embodiment is that only one sealing element 29 a is arranged in the sealing groove 28 a , which is fixed by a fixing rod 38 a .

[0062] It has proven sufficient to use only a single molded seal 29a. The overall effort required to produce the seal and the components equipped with it is reduced.

[0063] The seal and in particular its mode of operation for fastening it in the sealing groove 28 a are otherwise identical.

[0064] Reference Number:

[0065] 1-Diverter valve

[0066] 2 – Shell

[0067] 3 – Bulk material feed port

[0068] 4 – Bulk material outlet

[0069] 5 – Bulk material outlet

[0070] 6 – Rotational Components

[0071] 7 – Rotation axis

[0072] 8 – Central vertical axis

[0073] 9 – Inner hole

[0074] 10 – Pipe sleeve

[0075] 11 – Fastening flange

[0076] 12 – Access Pipe

[0077] 13 – First housing side cover

[0078] 14-Second housing side cover

[0079] 15 – Bearing journal

[0080] 16 – Drive unit

[0081] 20 – End wall

[0082] 21 – End wall

[0083] 22 – First Cross Wall

[0084] 23 – Second Cross Wall

[0085] 24 – First cylinder liner segment wall

[0086] 25 – Second cylinder liner segment wall

[0087] 26 – Recess

[0088] 27 – Inner surface

[0089] 28 – Sealing groove

[0090] 29 – Sealing element

[0091] 30 – Sealing element

[0092] 31 – Axial section

[0093] 32 – Circumferential Segment

[0094] 33 – Clamping the disc

[0095] 34 – Notch

[0096] 35 – Sealing surface

[0097] 36 – Seal the interior

[0098] 37 – Seal the exterior

[0099] 38 – Fixed rod

[0100] 39 – Through hole.

Claims

1. A sealing device for a component for conveying bulk materials, characterized in that: The sealing device comprises a. a housing (2), the housing having a bulk material feed opening (3) and at least one bulk material discharge opening (4, 5), b. a moving part displaceably arranged in the housing (2), and c. a sealing groove formed on the housing (2) or on the moving part, at least one sealing element (29, 30; 29a) being arranged in the sealing groove, wherein the at least one sealing element (29, 30; 29a) has a sealing cross section having an outer contour that is concave at least in a partial section, d. A fixing rod (38; 38a), by means of which the at least one sealing element (29, 30; 29a) is clamped in the sealing groove, wherein the fixing rod (38; 38a) abuts against the concave outer contour at least in a partial section.

2. The sealing device according to claim 1, characterized in that: The concave outer contour is designed as a recess (34).

3. The sealing device according to claim 1, characterized in that: A plurality of sealing elements are arranged in the sealing groove (28).

4. The sealing device according to claim 3, characterized in that: The sealing elements are each arranged with concave outer contours facing one another in the sealing groove (28), wherein the fixing rod (38) is arranged at least in sections on a plurality of concave outer contours. 5 . The sealing device according to claim 4 , wherein the fixing rod is arranged at least in partial sections on the entire concave outer contour.

6. The sealing device according to claim 1, characterized in that: The sealing cross section has a sealing surface (35) with which the corresponding sealing element (29, 30; 29a) bears against a contact surface of the moving part or the housing (2) in a sealing manner.

7. The sealing device according to claim 1, characterized in that: The sealing cross section has a first thickness (D1) and a second thickness (D2) which is smaller than the first thickness (D1), wherein the at least one sealing element having the second thickness (D2) is arranged in the groove bottom.

8. The sealing device according to claim 1, characterized in that: The fixing rod (38; 38a) is fastened to the moving part.

9. The sealing device according to claim 1, characterized in that: The at least one sealing element (29, 30; 29a) is designed as a one-piece circumferential molded seal.

10. The sealing device according to claim 1, characterized in that: The sealing groove has a rectangular groove cross section.

11. An assembly for conveying bulk materials, comprising a sealing device according to claim 1, characterized in that: The moving part is designed as a rotating part (6), which is arranged in the housing (2) to be able to rotate about a rotation axis (7).

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