Top cap for filter cartridge of filter container, filter cartridge and filter container

Abstract

The utility model relates to a filter cartridge's top cap for filter container, filter cartridge and filter container, the top cap includes: first component (2) for accommodating filter medium (6) of filter cartridge (5), second component (3) for positioning top cap (1) in the non - circular opening (9) of retainer plate (8) of filter container (7), and the tubular intermediate component (4) between first component (2) and second component (3), the tubular intermediate component (4) is configured to, when the second component (3) is inserted through the non - circular opening (9) of retainer plate (8) so that the tubular intermediate component (4) is located in the non - circular opening (9), allow top cap (1) rotate through the specified rotation angle around the rotation axis of tubular intermediate component (4) relative to retainer plate (8).

Description

Technical Field

[0001] This invention relates to a top cap for a filter cartridge used in a filter container for separating components from a fluid flow, such a filter cartridge, and such a filter container.

[0002] More specifically, this invention relates to a top cap for a filter cartridge of a filter container for separating components from a fluid flow, the top cap comprising:

[0003] The first component is a filter medium for housing the filter cartridge for filtering components from a fluid flow.

[0004] The second component positions the top cap within a non-circular opening in the retainer plate of the filter container. The second component has a profile corresponding to the non-circular opening, such that it can only be inserted through the non-circular opening when the profile and the non-circular opening are in a position of relative rotational alignment.

[0005] A tubular intermediate component, with a first end connected to a first component and a second end of the tubular intermediate component opposite to the first end connected to a second component, to form a tubular fluid flow guiding system between the first component and the second component. Background Technology

[0006] Such a top cap is known in the prior art.

[0007] Attaching a filter cartridge to the retainer plate of a filter container for separating components from a fluid flow typically requires a suitable seal between the top cap of the filter cartridge and the retainer plate, and necessitates a robust connection between the top cap of the filter cartridge and the retainer plate. In this case, the connection should be able to hold the filter cartridge in place relative to the filter container during dynamic fluid flow, such as compressed gas.

[0008] In existing filter equipment, the connection is provided by a removable elastomeric O-ring for sealing between the top cap of the filter cartridge and the retainer plate. When the filter cartridge is installed in the retainer plate, the removable elastomeric O-ring is axially pressed against the retainer plate by means of a threaded mechanism. This threaded mechanism is secured by additional mechanical components such as threaded rods, supports, and retainers.

[0009] However, during and / or after installing the filter cartridge in the retainer plate, there is a risk that the removable elastomer O-ring may become loose or no longer be in the correct position.

[0010] This will compromise the seal between the top cap and the retainer plate and / or the strength of the connection between the top cap and the retainer plate. Additionally, the removable elastomer O-ring may be damaged.

[0011] Furthermore, the threaded mechanism may be damaged if the filter cartridge is not handled properly during installation in the filter container. Utility Model Content

[0012] The present invention aims to provide a solution to one or more of the above and / or other disadvantages.

[0013] More specifically, this invention aims to make the connection between the filter cartridge and the retainer plate structurally less complex, thus allowing for faster assembly and maintenance. At the same time, this connection must be robust, less prone to errors during assembly and maintenance, and therefore safer.

[0014] Another objective of this invention is to achieve the maximum sealing fit between the filter cartridge and the retainer plate, while simultaneously requiring the lowest possible torsional force to install the filter cartridge in the retainer plate, so that the filter cartridge can be easily and manually attached to the retainer plate.

[0015] Therefore, the present invention relates to a top cap for a filter cartridge of a filter container for separating components from a fluid flow, the top cap comprising:

[0016] The first component is a filter medium for housing the filter cartridge for filtering components from a fluid flow.

[0017] The second component positions the top cap within a non-circular opening in the retainer plate of the filter container. The second component has a profile corresponding to the non-circular opening, such that it can only be inserted through the non-circular opening when the profile and the non-circular opening are in a position of relative rotational alignment.

[0018] A tubular intermediate component, with a first end connected to a first component and a second end of the tubular intermediate component opposite to the first end connected to a second component, to form a tubular fluid flow guiding system between the first component and the second component.

[0019] The characteristic feature is that the tubular intermediate member is configured such that when the second member is inserted through the non-circular opening of the retainer plate and the tubular intermediate member is located in the non-circular opening, the top cap is allowed to rotate about the axis of rotation of the tubular intermediate member by a specified rotation angle relative to the retainer plate.

[0020] The top cap is provided with one or more lifting members, which are configured such that when the second component is inserted through the non-circular opening of the retainer plate, such that the tubular intermediate component is located in the non-circular opening, and when the top cap subsequently rotates relative to the retainer plate about the axis of rotation by a specified rotation angle, the first component moves in a direction toward the axis of rotation of the retainer plate; and

[0021] When the second component has been inserted through the non-circular opening of the retainer plate such that the tubular intermediate component is located in the non-circular opening, the side of the first component facing the retainer plate is provided with a sealing member surrounding the tubular intermediate component, such that the space between the sealing member, the side of the first component, the retainer plate, and the tubular intermediate component is sealed only when the second component has been inserted through the non-circular opening of the retainer plate such that the tubular intermediate component is located in the non-circular opening, and when the top cap is subsequently rotated relative to the retainer plate about the axis of rotation by a specified rotation angle.

[0022] The fluid flow can be, for example, an airflow, and more specifically, a flow of compressed air, while the components can be, for example, atomized droplets, and more specifically, oil and / or water droplets.

[0023] When the second component is inserted through the non-circular opening such that the tubular intermediate component is located in the non-circular opening, the second component of the top cap is maintained in position behind the first component relative to the first component by rotating the top cap relative to the retainer plate by a specified rotation angle about the axis of rotation.

[0024] Compared to known top caps, the top cap according to this invention can be structurally less complex and can be installed in the retainer plate more quickly because there may be no threaded mechanism for the connection between the top cap and the retainer plate of the filter container, and thus eliminates the need for any additional mechanical components required for such a threaded mechanism in the filter cartridge, without sacrificing strength in the connection between the top cap and the retainer plate of the filter container.

[0025] Since the top cap according to this invention does not require a threaded rod in the filter cartridge, the risk of damage to the threaded rod in case of improper operation of the filter cartridge can be eliminated when the filter cartridge is installed in the filter container. Therefore, when the filter cartridge is installed in the filter container, the connection between the filter cartridge and the retainer plate is less prone to errors due to the top cap.

[0026] The fact that the second part of the top cap has a profile profile corresponding to the non-circular opening of the retainer plate, and that the second part of the top cap can only be inserted through the non-circular opening when the profile profile and the non-circular opening are in a position of mutual rotational alignment, also removes the degree of freedom during the installation of the top cap in the retainer plate. This will also improve the sensitivity to errors and thus improve the security of the connection between the filter cartridge and the retainer plate by means of the top cap.

[0027] Because the sealing member is configured such that the space between the sealing member, the side of the first component, the retainer plate, and the tubular intermediate component is sealed only after the top cap has rotated a specified rotation angle relative to the retainer plate about the axis of rotation, the torque required to install the top cap in the retainer plate will not increase due to any tangential shear forces arising from any interaction between the sealing member on one side and the side of the retainer plate or the first component on the other side, as long as the top cap has not yet rotated a specified rotation angle relative to the retainer plate about the axis of rotation. This allows the required torque to be minimized for as long as possible during the installation of the top cap in the retainer plate. Furthermore, it reduces the risk of damage to the sealing member.

[0028] In a preferred embodiment of the top cap according to the present invention, the lifting member includes at least one inclined guide surface of the second component, wherein the inclined guide surface is present when the second component is inserted through the non-circular opening of the retainer plate such that the tubular intermediate component is located in the non-circular opening.

[0029] It is positioned at least partially at a certain vertical distance from the axis of rotation, which is greater than the minimum vertical distance between the profile of the non-circular opening of the retainer plate and the axis of rotation;

[0030] Oriented toward the retainer plate and oriented at a specified tilt angle relative to the retainer plate; and

[0031] It is configured to contact the retainer plate during at least a portion of a time period in which the top cap rotates relative to the retainer plate about the axis of rotation through a specified rotation angle.

[0032] The inclined guide surface has a simple geometry, so it can be easily applied to the second part of the top cap using standard manufacturing techniques.

[0033] In another preferred embodiment of the top cap according to the present invention, the second component is provided with a guide member, which is configured on the one hand to guide the second component axially along the axis of rotation in the non-circular opening of the retainer plate, and on the other hand to bring the profile of the second component and the profile of the non-circular opening into a position of mutual rotational alignment.

[0034] Preferably, the guide member includes at least one inclined guide profile that extends from a point on the profile profile that is vertically furthest from the axis of rotation in a direction toward a point on the axis of rotation that is further away from the tubular intermediate member in the direction of rotation than the point on the profile profile that is vertically furthest from the axis of rotation.

[0035] When the second component is inserted through the circular opening, this guide member ensures, in a simple manner, automatic, correct, and rotational alignment of the profile of the second component of the top cap with the profile of the non-circular opening of the retainer plate of the filter container.

[0036] In another preferred embodiment of the top cap according to the present invention, the top cap preferably, and in this case, is also provided with a blocking member to prevent further rotation of the top cap relative to the retainer plate when the second component has been inserted through the non-circular opening of the retainer plate such that the tubular intermediate component is located in the non-circular opening, and when the top cap has subsequently rotated relative to the retainer plate about the axis of rotation by an angle equal to a specified rotation angle, or an angle only a small fraction larger than the specified rotation angle.

[0037] When the space between the sealing member, the side of the first component, the retainer plate, and the tubular intermediate component has been adequately sealed, the blocking member prevents the top cap from rotating further relative to the retainer plate. This prevents excessive forces between the sealing member and the side of the first component and / or between the sealing member and the retainer plate, thereby reducing the risk of damage to the sealing member.

[0038] Preferably, the blocking member more preferably includes at least one lip, wherein the lip protrudes from the outer surface of the tubular intermediate member, and the lip includes an abutting surface facing away from the outer surface and is configured to contact the contour of the non-circular opening of the retainer plate when the second member is inserted through the non-circular opening of the retainer plate such that the tubular intermediate member is located in the non-circular opening, and when the top cap is subsequently rotated relative to the retainer plate about the axis of rotation through that angle.

[0039] This lip has a simple geometry, so it can be practically implemented on the outer surface of the tubular intermediate component in a simple way.

[0040] In another preferred embodiment of the top cap according to the present invention, the sealing member is connected as a permanent sealing member to the side of the first component.

[0041] By forming the sealing member as a permanent sealing member attached to the side of the first component, the sealing member will be more securely attached to the top cap and is less likely to loosen and / or end up in an incorrect position compared to a conventional removable elastic O-ring.

[0042] In another preferred embodiment of the top cap according to the present invention, the sealing member is a D-ring having a flat side that is configured to connect to the side of the first component.

[0043] At the flat side, the sealing member can be more securely attached to the side of the first part of the top cap, and is therefore less likely to loosen and / or end up in an incorrect position compared to a conventional removable elastic O-ring.

[0044] Alternatively, the sealing member is a U-ring or V-ring, comprising:

[0045] An annular base having base sides configured to connect to the side of the first component;

[0046] The outer ring extends from the outer side of the base in a direction away from the base side and is configured to contact the retainer plate when the second component is inserted through the non-circular opening of the retainer plate such that the tubular intermediate component is located in the non-circular opening, and when the top cap subsequently rotates relative to the retainer plate about the axis of rotation through a specified rotation angle; and

[0047] The inner ring extends from the inner side of the base in a direction away from the base side and is configured to contact the retainer plate when the second component is inserted through the non-circular opening of the retainer plate such that the tubular intermediate component is located in the non-circular opening and when the top cap is subsequently rotated relative to the retainer plate about the axis of rotation by a specified rotation angle.

[0048] On the base side, the sealing member can be fixed to the first part of the top cap.

[0049] When the top cap rotates about the axis of rotation relative to the retainer plate by a specified rotation angle, the protruding ends of the outer ring and the inner ring will contact the retainer plate respectively, and in this way a double seal can be formed with the retainer plate.

[0050] Preferably, the outer ring and / or inner ring are flexible lips.

[0051] The advantage of this flexible lip is that the contact surface between the flexible lip and the retainer plate increases with further compression of the sealing member between the first part of the top cap and the retainer plate, thereby achieving a better seal between the sealing member and the retainer plate.

[0052] This utility model also relates to a filter cartridge for a filter container used to separate components from a fluid flow, comprising a filter medium for filtering components from a fluid flow.

[0053] The filter cartridge is characterized in that it further includes a top cap according to any of the above embodiments, wherein the filter medium is contained in a first part of the top cap.

[0054] It goes without saying that this filter cartridge enjoys the same advantages as the top cap according to any of the embodiments described above.

[0055] Furthermore, this invention relates to a filter container for separating components from a fluid flow, characterized in that the filter container includes a retainer plate, and the filter container is configured to include a filter cartridge according to this invention by mounting a top cap of the filter cartridge in a non-circular opening in the retainer plate, wherein a second part of the top cap has a corresponding profile.

[0056] It goes without saying that such a filter container is needed to achieve the advantages of the top cap according to any of the above embodiments or the filter cartridge according to the present invention. Attached Figure Description

[0057] To better illustrate the features of this utility model, several preferred embodiments of the top cap for a filter cartridge, the filter cartridge, and the filter container according to this utility model are described below by way of example and not limitation, with reference to the accompanying drawings, wherein...

[0058] Figure 1 The top cap of the filter cartridge for separating components from a fluid flow according to the present invention is shown;

[0059] Figure 2 A filter cartridge for separating components from a fluid flow is shown according to the present invention;

[0060] Figure 3 A partial cross-section of a filter container for separating components from a fluid flow according to the present invention is shown;

[0061] Figure 4 Showing more details Figure 3 Bottom view of a portion of the retainer plate in the filter container, shown in the middle, labeled F4;

[0062] Figure 5 It shows Figure 1 A top view of the top cap according to this utility model;

[0063] Figure 6 It shows Figure 1 A side view of the top cap according to this utility model;

[0064] Figure 7a A more detailed description is provided along... Figure 1 A partial cross-section of the top cap taken along centerline VII-VII;

[0065] Figure 7b It shows the use of Figure 1 A partial cross-section of a first alternative embodiment of the top cap;

[0066] Figure 7c It shows the use of Figure 1A partial cross-section of a second alternative embodiment of the top cap;

[0067] Figure 7d It shows the use of Figure 1 A partial cross-section of the third alternative embodiment of the top cap. Detailed Implementation

[0068] Figure 1 The top cap 1 of the filter cartridge for separating components from a fluid flow is shown.

[0069] The top cap 1 includes a first component 2 for containing filter media for a filter cartridge used to filter components from a fluid flow.

[0070] In addition, the top cap 1 includes a second component 3 for positioning the top cap 1 in a non-circular opening in the retainer plate of the filter container.

[0071] In addition, the top cap 1 includes a tubular intermediate component 4. A first end of the tubular intermediate component 4 is connected to a first component 2, and a second end of the tubular intermediate component 4 is connected to a second component 3 to form a tubular fluid flow guiding system between the first component 2 and the second component 3.

[0072] Figure 2 A filter cartridge 5 for separating components from a fluid flow is shown in the filter container according to the present invention.

[0073] The filter cartridge 5 includes a filter medium 6 for filtering components from the fluid flow.

[0074] In addition, the filter cartridge 5 includes, for example, Figure 1 The top cap 1 shown is provided with filter medium 6 contained in the first part 2 of the top cap 1.

[0075] Figure 3 A partial cross-section of a filter container 7 for separating components from a fluid flow according to the present invention is shown.

[0076] The filter container 7 includes a retainer plate 8, wherein the filter container 7 is configured to include a filter cartridge 5 by mounting the top cap 1 in a non-circular opening 9 in the retainer plate 8. Figure 2 The filter cartridge 5 in the filter has a second part 3 of the top cap 1 with a profile profile corresponding to the non-circular opening.

[0077] Figure 4 Showing more details Figure 3 Bottom view of a portion of the retainer plate 8 in the filter container 7, shown as F4.

[0078] In this bottom view, the outline curve 10 of the non-circular opening 9 of the retainer plate 8 is clearly shown.

[0079] Figure 5 It shows Figure 1 The top view of the top cap 1 according to the present invention.

[0080] In this top view, it can be seen that the second part 3 of the top cap 1 has a profile profile 11 corresponding to the non-circular opening 9, such that the second part 3 is inserted through the non-circular opening 9 only when the profile profile 5 and the profile 10 of the non-circular opening 9 are in a position of mutual rotational alignment.

[0081] The tubular intermediate component 4 is configured such that when the second component 3 is inserted through the non-circular opening 9 of the retainer plate 8 and the tubular intermediate component 4 is located in the non-circular opening 9, the top cap 1 is allowed to rotate about the axis of rotation of the tubular intermediate component 4 about a specified rotation angle relative to the retainer plate 8.

[0082] Then, when the second component 3 is inserted through the non-circular opening 9 such that the tubular intermediate component 4 is located in the non-circular opening 9, the second component 3 of the top cap 1 is held in position behind the first component 2 relative to the first component 2 by rotating the top cap 1 relative to the retainer plate 8 by a specified rotation angle about the axis of rotation.

[0083] Figure 6 It shows Figure 1 A side view of the top cap 1 according to the present invention.

[0084] The top cap 1 is provided with one or more lifting members 12, which are configured such that when the second part 3 is inserted through the non-circular opening 9 such that the tubular intermediate part 4 is located in the non-circular opening 9, and when the top cap 1 is subsequently rotated relative to the retainer plate 8 about the axis of rotation of the tubular intermediate part 4 by a specified rotation angle, the first part 2 moves toward the retainer plate 8 in the direction of the axis of rotation.

[0085] Furthermore, when the second component 3 has been inserted through the non-circular opening 9 of the retainer plate 8 so that the tubular intermediate component 4 is located in the non-circular opening 9, the side 13 of the first component 2 facing the retainer plate 8 is provided with a sealing member 14a surrounding the tubular intermediate component 4, such that the space between the sealing member 14a, the side 13 of the first component 2, the retainer plate 8 and the tubular intermediate component 4 is sealed only when the second component 3 has been inserted through the non-circular opening 9 so that the tubular intermediate component 4 is located in the non-circular opening 9 and when the top cap 1 is subsequently rotated relative to the retainer plate 8 about the axis of rotation by a specified rotation angle.

[0086] Preferably, and in this case, the lifting member 12 includes at least one inclined guide surface 15 on the second part 3 of the top cap 1. When the second part 3 is inserted through the non-circular opening 9 of the retainer plate 8 such that the tubular intermediate part 4 is located in the non-circular opening 9, the inclined guide surface 15 is at least partially positioned at a certain vertical distance from the axis of rotation, which is greater than the minimum vertical distance between the profile 10 of the non-circular opening 9 of the retainer plate 8 and the axis of rotation. The inclined guide surface 15 is oriented toward the retainer plate 8 and is oriented relative to the retainer plate 8 at a specified tilt angle, and is configured to contact the retainer plate 8 during at least a portion of a time period in which the top cap 1 rotates relative to the retainer plate 8 about the axis of rotation through the specified rotation angle.

[0087] Furthermore, preferably and in this case, the second component 3 is provided with a guide member 16, which is configured such that, on the one hand, the second component 3 is axially guided along the axis of rotation in the non-circular opening 9 of the retainer plate 8, and on the other hand, the profile profile 11 of the second component 3 and the profile 10 of the non-circular opening 9 are brought into a position of mutual rotational alignment.

[0088] More preferably, the guide member 16 includes at least one inclined guide profile 17 that extends in a direction toward the point on the profile profile curve 11 that is vertically furthest from the axis of rotation than the point on the profile profile curve 11 that is vertically furthest from the axis of rotation. In this case, the top cap 1 includes three such guide profiles 17.

[0089] Furthermore, the top cap 1 is preferably, and in this case, also provided with a blocking member 18, for preventing further rotation of the top cap 1 relative to the retainer plate 8 when the second component 3 has been inserted through the non-circular opening 9 of the retainer plate 8 such that the tubular intermediate component 4 is located in the non-circular opening 9, and when the top cap 1 has subsequently rotated about the axis of rotation relative to the retainer plate 8 by an angle equal to or only a small fraction of the specified rotation angle.

[0090] Here, the blocking member 18 more preferably includes at least one lip 19, wherein the lip 19 protrudes from the outer surface of the tubular intermediate member 4, and the lip 19 includes an abutment surface 20 facing away from the outer surface and is configured to contact the contour 10 of the non-circular opening 9 of the retainer plate 8 when the second member 3 is inserted through the non-circular opening 9 of the retainer plate 8 such that the tubular intermediate member 4 is located in the non-circular opening 9 and when the top cap 1 is subsequently rotated relative to the retainer plate 8 about the axis of rotation through that angle.

[0091] Figure 7a A more detailed description is provided along... Figure 1 A partial cross-section of the top cap 1 taken from the centerline VII-VII.

[0092] In this partial cross-section, the connection between the sealing member 14a and the side portion 13 of the first component 2 is clearly shown.

[0093] Preferably, the sealing member 14a is connected as a permanent sealing member to the side 13 of the first component 2. This is preferably achieved by means of an overmolding process.

[0094] Figure 7b It shows the use of Figure 1 A partial cross-section of the first alternative embodiment of the top cap 1 is similar to... Figure 7a A local cross-section within.

[0095] In this first alternative embodiment, the top cap is provided with a first alternative sealing member 14b. Here, the first alternative sealing member 14b is a D-ring having a flat side 21, which is configured to connect to the side 13 of the first component 2 of the top cap.

[0096] Figure 7c It shows the use of Figure 1 A partial cross-section of the second alternative embodiment of the top cap 1 is similar to... Figure 7a A local cross-section within.

[0097] In this second alternative embodiment, the top cap is provided with a second alternative sealing member 14c. Here, the second alternative sealing member 14c is a V-ring comprising an annular base 22 having a base side 23 configured to connect to the side 13 of the first component 2; an outer ring 24 protruding from the outer side of the base 22 in a direction away from the base side 23 and configured to contact the retainer plate 8 when the second component 3 is inserted through the non-circular opening 9 of the retainer plate 8 such that the tubular intermediate component 4 is located in the non-circular opening 9 and when the top cap subsequently rotates relative to the retainer plate 8 about the axis of rotation by a specified rotation angle; and an inner ring 25 protruding from the inner side of the base 22 in a direction away from the base side 23 and configured to contact the retainer plate 8 when the second component 3 is inserted through the non-circular opening 9 of the retainer plate 8 such that the tubular intermediate component 4 is located in the non-circular opening 9 and when the top cap subsequently rotates relative to the retainer plate 8 about the axis of rotation by a specified rotation angle.

[0098] Within the scope of this utility model, it is not excluded that the second alternative sealing member is not a V-shaped ring but a U-shaped ring, wherein the outer ring and the inner ring do not form an acute angle with each other at the annular base.

[0099] Figure 7d It shows the use of Figure 1A partial cross-section of the second alternative embodiment of the top cap 1 is similar to... Figure 7a A local cross-section within.

[0100] In this third alternative embodiment, the top cap is provided with a third alternative sealing member 14d.

[0101] This third alternative sealing member 14d is similar to Figure 7c The second alternative sealing member 14c differs from the third alternative sealing member 14d in that the outer ring 24 and the inner ring 25 are flexible lips.

[0102] Within the scope of this utility model, it is not excluded that only one of the outer ring 24 and the inner ring 25 is a flexible lip.

[0103] This invention is by no means limited to the embodiments described by way of example and shown in the accompanying drawings, but rather the top cap for the filter cartridge, the filter cartridge and the filter container according to this invention can be implemented in various variations without departing from the scope of this invention as defined in the claims.

Claims

1. A top cap for a filter cartridge in a filter container for separating components from a fluid flow, the top cap comprising: A first component (2) is used to contain the filter medium (6) of the filter cartridge (5), the filter medium being used to filter components from the fluid flow; A second component (3) for positioning the top cap (1) in a non-circular opening (9) of the retainer plate (8) of the filter container (7), the second component (3) having a profile profile (11) corresponding to the non-circular opening (9) such that the second component (3) can only be inserted through the non-circular opening (9) when the profile profile (11) and the profile (10) of the non-circular opening (9) are in a position of mutual rotational alignment; and A tubular intermediate component (4) has a first end connected to the first component (2) and a second end of the tubular intermediate component (4) opposite to the first end connected to the second component (3) to form a tubular fluid flow guiding system between the first component (2) and the second component (3). Its features , The tubular intermediate component (4) is configured such that when the second component (3) is inserted through the non-circular opening (9) of the retainer plate (8) such that the tubular intermediate component (4) is located in the non-circular opening (9), the top cap (1) is allowed to rotate about the axis of rotation of the tubular intermediate component (4) relative to the retainer plate (8) by a specified rotation angle. The top cap (1) is provided with one or more lifting members (12), the lifting members (12) being configured such that when the second component (3) is inserted through the non-circular opening (9) of the retainer plate (8) such that the tubular intermediate component (4) is located in the non-circular opening (9) and when the top cap (1) subsequently rotates relative to the retainer plate (8) about the axis of rotation through the specified rotation angle, the first component (2) moves toward the retainer plate (8) in the direction of the axis of rotation; and When the second component (3) is inserted through the non-circular opening (9) of the retainer plate (8) such that the tubular intermediate component (4) is located in the non-circular opening (9), the side (13) of the first component (2) facing the retainer plate (8) is provided with a sealing member (14a; 14b; 14c; 14d) surrounding the tubular intermediate component (4), such that the space between the sealing member (14a; 14b; 14c; 14d), the side (13) of the first component (2), the retainer plate (8) and the tubular intermediate component (4) is sealed only when the second component (3) is inserted through the non-circular opening (9) of the retainer plate (8) such that the tubular intermediate component (4) is located in the non-circular opening (9) and when the top cap (1) is subsequently rotated about the axis of rotation by the specified rotation angle relative to the retainer plate (8), the space between the sealing member (14a; 14b; 14c; 14d), the side (13) of the first component (2), the retainer plate (8) and the tubular intermediate component (4).

2. The top cap according to claim 1, characterized in that, The lifting member (12) includes at least one inclined guide surface (15) of the second component (3), wherein the inclined guide surface (15) is inserted through the non-circular opening (9) of the retainer plate (8) such that the tubular intermediate component (4) is located in the non-circular opening (9): At least partially positioned at a certain vertical distance from the axis of rotation, the vertical distance being greater than the minimum vertical distance between the outline (10) of the non-circular opening (9) of the retainer plate (8) and the axis of rotation; Oriented toward the retainer plate (8) and oriented at a specified tilt angle relative to the retainer plate (8); and It is configured to contact the retainer plate (8) during at least a portion of the time period in which the top cap (1) rotates relative to the retainer plate (8) about the axis of rotation through the specified rotation angle.

3. The top cap according to claim 1 or 2, characterized in that, The second component (3) is provided with a guide member (16), which is configured on the one hand to guide the second component (3) axially along the axis of rotation in the non-circular opening (9) of the retainer plate (8), and on the other hand to bring the profile (11) of the second component (3) and the profile (10) of the non-circular opening (9) into a position of mutual rotational alignment.

4. The top cap according to claim 3, characterized in that, The guide member (16) includes at least one inclined guide profile (17) that extends from a point on the profile profile (11) that is vertically furthest from the axis of rotation along a direction toward the axis of rotation that is further away from the tubular intermediate member (4) in the direction of the axis of rotation than the point on the profile profile (11) that is vertically furthest from the axis of rotation.

5. The top cap according to claim 1 or 2, characterized in that, The top cap (1) is provided with a blocking member (18) for preventing further rotation of the top cap (1) relative to the retainer plate (8) when the second component (3) has been inserted through the non-circular opening (9) of the retainer plate (8) such that the tubular intermediate component (4) is located in the non-circular opening (9) and when the top cap (1) has subsequently rotated relative to the retainer plate (8) about the axis of rotation by an angle equal to or only a small fraction larger than the specified rotation angle.

6. The top cap according to claim 5, characterized in that, The blocking member (18) includes at least one lip (19) that protrudes from the outer surface of the tubular intermediate member (4) and includes an abutment surface (20) that faces away from the outer surface and is configured to contact the contour (10) of the non-circular opening (9) of the retainer plate (8) when the second member (3) is inserted through the non-circular opening (9) of the retainer plate (8) such that the tubular intermediate member (4) is located in the non-circular opening (9) and when the top cap (1) is subsequently rotated relative to the retainer plate (8) about the axis of rotation through the specified rotation angle.

7. The top cap according to claim 1 or 2, characterized in that, The sealing members (14a; 14b; 14c; 14d) are connected to the side (13) of the first component (2) as permanent sealing members.

8. The top cap according to claim 1 or 2, characterized in that, The sealing member (14a; 14b; 14c; 14d) is a D-ring having a flat side (21) configured to connect to the side (13) of the first component (2).

9. The top cap according to claim 1 or 2, characterized in that, The sealing member (14a; 14b; 14c; 14d) is a U-ring or a V-ring, and the sealing member includes: An annular base (22) having a base side (23) configured to connect to the side (13) of the first component (2); An outer ring (24), which extends from the outer side of the base (22) in a direction away from the base side (23), and is configured to contact the retainer plate (8) when the second component (3) is inserted through the non-circular opening (9) of the retainer plate (8) such that the tubular intermediate component (4) is located in the non-circular opening (9) and when the top cap (1) subsequently rotates about the axis of rotation relative to the retainer plate (8) through the specified rotation angle; and The inner ring (25) extends from the inner side of the base (22) in a direction away from the base side (23) and is configured to contact the retainer plate (8) when the second component (3) is inserted through the non-circular opening (9) of the retainer plate (8) such that the tubular intermediate component (4) is located in the non-circular opening (9) and when the top cap (1) subsequently rotates relative to the retainer plate (8) about the axis of rotation through the specified rotation angle.

10. The top cap according to claim 9, characterized in that, The outer ring (24) and / or the inner ring (25) are flexible lips.

11. A filter cartridge for a filter container for separating components from a fluid flow, the filter cartridge comprising a filter medium (6) for filtering components from the fluid flow. Its features are, The filter cartridge (5) further includes a top cap (1) according to any one of claims 1 to 10, wherein the filter medium (6) is contained in the first component (2) of the top cap (1).

12. A filter container for separating components from a fluid flow, characterized in that, The filter container (7) includes a retainer plate (8), and the filter container (7) is configured to include the filter cartridge (5) according to claim 11 by mounting the top cap (1) of the filter cartridge (5) in a non-circular opening (9) of the retainer plate (8), whereby the second part (3) of the top cap (1) has a corresponding profile (11).

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