Rotatably mounted component and method for operating same
Patent Information
- Application Number
- EP2023805880
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-10-28
- Filing Date
- 2023-10-26
- Publication Date
- 2025-09-03
AI Technical Summary
Rotatably mounted components, such as rotary valves in packing systems, face challenges in preventing contamination of fine and ultra-fine products from entering the shaft area during rotation, leading to restricted movement and reduced performance.
A rotatably mounted component with a sealing device comprising a first and second sealant, a flow channel, and a pressure control valve, which uses purge air to maintain a predetermined pressure and prevent contamination, along with a ventilation channel to remove any penetrating fluid, ensuring effective sealing and reduced wear detection.
The solution provides a reliable and efficient sealing mechanism that prevents contamination of the shaft section, reduces wear, and allows for precise fluid regulation, enhancing the component's operational reliability and performance, especially when handling fine products.
Smart Images
Figure 1.1
Abstract
Description
[0001] Rotatably mounted component and method for operating
[0002] Description
[0003] The present invention relates to a rotatably mounted component, comprising at least one shaft section and at least one functional section received thereon. At least one sealing device is assigned to the shaft section, wherein the shaft section and the functional section are sealed from one another by means of the sealing device. The shaft section is received in at least one housing, at least in the region of the sealing device, and the sealing device has at least a first sealing means and at least one second sealing means. At least one flow channel is formed between the shaft section or the shaft and the housing between the two sealing means, wherein at least one line is connected to the flow channel, by means of which line at least one fluid can be fed into the flow channel. The present invention also relates to a method for operating such a component.
[0004] Rotatably mounted components have become known in the prior art in a variety of designs. Generally, rotatably mounted components usually comprise a drivable shaft by means of which a tool or other functional element can be rotated.
[0005] For example, in packaging systems for filling bulk goods into containers, depending on the design, rotatably mounted closure elements are provided in a filling channel, which can close or open the channel depending on the rotational position. Such a rotary valve also has a shaft and a closure element as a functional element. Such so-called rotary valves are known, for example, from DE 10 2011 119 624 A1.
[0006] It is particularly important for rotatably mounted components that the bearing area of the shaft is kept free of dirt so that the rotation of the shaft is not restricted.
[0007] Especially with closure devices or rotary valves in packaging systems, it is very important, but difficult, to keep product away from the bearing area of the shaft, especially when filling fine and / or very fine products.
[0008] It is therefore the object of the present invention to provide a rotatable component such as a closure member such as a rotary slide valve for the filling channel of a filling module of a packaging system, which also functions reliably when filling very fine products.
[0009] This object is achieved by a rotatably mounted component having the features of claim 1 and by a method for operating a rotatably mounted component having the features of claim 10. Preferred developments of the invention are the subject of the dependent claims. Further advantages and features of the present invention emerge from the general description and the description of the exemplary embodiment.
[0010] The rotatably mounted component according to the invention comprises at least one shaft section and at least one functional section received thereon or operatively connected thereto. The shaft section comprises in particular at least one shaft or drive shaft and the functional section comprises at least one functional element. At least one sealing device is assigned to the shaft section, wherein the shaft section and the functional section are sealed from one another by means of the sealing device. The shaft section or the shaft is received in at least one housing, at least in the region of the sealing device, wherein the sealing device comprises at least a first sealing means and at least one second sealing means, between which at least one flow channel is formed between the shaft section or the shaft and the housing. Furthermore, at least one line is connected to the flow channel orconnectable, by means of which at least one fluid can be supplied into the flow channel. At least one pressure control valve and at least one pressure sensor device are provided to regulate the fluid supply into the flow channel. Furthermore, at least one venting channel is provided at least in the functional section adjacent to the first sealing means.
[0011] The shaft section comprises, in particular, at least one shaft which is rotatably mounted. The shaft or shaft section can preferably be driven in any known manner to rotate the shaft or shaft section. This can preferably be rotating and / or pivoting, depending on the application.
[0012] The functional section is in particular directly connected to the shaft section, manufactured in one piece and / or is operatively connected to the shaft section.
[0013] The functional section comprises in particular at least one functional element which performs a specific function during rotation by means of the shaft section or the shaft.
[0014] The rotatably mounted component can, for example, preferably be designed as a so-called rotary valve or provide such a valve, wherein such a rotary valve is a closure element of a packaging system for filling bulk goods or other products into bags or the like. Such a rotary valve or such a closure element then preferably comprises at least one closure element arranged within a filling channel, wherein, depending on the rotation or position of the closure element, the filling channel is more or less exposed, or opened or closed.
[0015] Depending on the design, the functional element can preferably also be, for example, a turbine wheel of a filling turbine or a closure element of a rotary valve.
[0016] Preferably, at least one control device is provided to control the pressure control valve.
[0017] The functional section can preferably be operated by turning or
[0018] Rotating the shaft section allows the shaft to be rotated or turned. For this purpose, the shaft section or shaft is operatively connected to at least one drive.
[0019] The shaft or the shaft section preferably has at least one bearing, in particular at least one rolling bearing.
[0020] The flow channel is designed, in particular, in the form of a pressure chamber. The pressure chamber preferably surrounds the shaft in a channel-like manner, and a pressure can be maintained in the pressure chamber or
[0021] A flow channel can be constructed, whereby, depending on the applied pressure, a certain amount of fluid from the flow channel or the pressure chamber can enter the functional section as so-called purge air.
[0022] For this purpose, at least the sealing means adjacent to the functional section can preferably be flushed through or undermined at least slightly by the fluid introduced into the flow channel, so that a certain amount of flushing air reaches the functional section depending on the sealing effect or condition of the sealing means.
[0023] In particular, a so-called purge air seal is provided, by means of which the penetration of product or other contaminants from the functional section into the shaft section is effectively prevented or at least greatly reduced.
[0024] The component according to the invention offers many advantages. A significant advantage is that a predetermined pressure can be generated in the flow channel via the pressure control valve, thereby ensuring a particularly effective and good seal between the shaft section and the functional section. This results from the fact that, in the event of an almost inevitable leak in the sealant associated with the functional section, the purge air escaping in the direction of the functional section prevents or at least significantly reduces the ingress of dirt into the shaft section.
[0025] By setting the predetermined pressure in the flow channel via the pressure control valve, a particularly good seal can be achieved, since in particular a defined under-washing of the sealing elements can be achieved.
[0026] A further advantage over the design known from the prior art, wherein the fluid supply is adjusted via a pressure reducer and a manual throttle, is that, for example, wear can be detected via the pressure control valve and that a short, bursty supply of air is also possible, for example to blow out impurities. This is particularly advantageous when the component is designed as a rotary slide valve, since sometimes very fine bulk material is filled which, depending on the design, could otherwise get into the shaft section when the shaft or shaft section rotates. In addition, a change interval for the sealing agent can preferably be displayed if, for example, too much purge air escapes in the direction of the functional section due to increasing wear.
[0027] Furthermore, the total compressed air consumption or the required amount of fluid can be reduced by means of a pressure control valve, since no reserve air needs to be kept.
[0028] The pressure control valve is preferably designed as a proportional pressure control valve. Particularly when using a proportional pressure control valve, particularly precise control of the fluid supply can be achieved.
[0029] Particularly preferably, the proportional pressure control valve can be controlled via at least one pulse width modulation signal (PWM signal). In this case, a predetermined pressure in the flow channel can be set and / or maintained particularly precisely via pulse width modulation. It is also preferably possible to detect wear on the sealing device or sealing means via the change in the PWM signal to maintain a predetermined pressure. A control device can then preferably transmit the PWM signal to the proportional pressure control valve.
[0030] According to the invention, at least one pressure sensor device is provided. Such a pressure sensor device can be arranged, in particular, on the line or the supply line of the fluid into the flow channel, wherein the pressure sensor device preferably comprises at least one pressure sensor, in particular as a switch.
[0031] In expedient further developments, the pressure control valve is controlled via the sensor data determined by the pressure sensor device. In particular, the internal pressure of the flow channel is regulated by adjusting the pressure control valve or proportional pressure valve accordingly, in particular by adjusting a corresponding signal or the PWM signal.
[0032] Preferably, at least one sealing means comprises at least one shaft seal or is designed as a shaft seal. Such a shaft seal can be fixed, for example, on the side facing away from the flow channel by means of a retaining ring and / or the like.
[0033] Particularly preferably, the flow channel comprises at least one nozzle. Such a nozzle provides, in particular, a connection between the flow channel and the ambient air.
[0034] Preferably, the nozzle is closable and / or designed as a pressure relief valve. For example, contaminants present in the flow channel can be blown out via the nozzle or the pressure relief valve. In particular, a burst-like blowout of contaminants can be provided.
[0035] In particular, the mounted component is a closure element of a packing system for filling bulk material. In this case, the functional section is preferably designed as a closure element, for example, if it is arranged rotatably in the filling channel of a filling module.
[0036] According to the invention, at least one venting channel is provided adjacent to the first sealing means at least in the functional section. The first sealing means is, in particular, the sealing means facing the functional section. Such a venting channel can be used, for example, to discharge fluid or air flowing from the flow channel into the functional section in the event of a leak and / or a desired permanent, cyclically controlled, and / or intermittent flow, without penetrating further into the functional section.
[0037] The functional section preferably comprises at least one sealing element, with the venting channel being arranged between the sealing means and the first sealing means, or the sealing means facing the functional section. As a result, the sealing element prevents or reduces the penetration of fluid further into the functional section, resulting in a type of forced venting through the venting channel. For example, if the functional element is a rotary valve, unwanted or uncontrolled air penetration into the product stream must be avoided, as this would lead to a change in the flow properties of the product, and excess air or fluid would have to be laboriously removed after filling into a container, e.g., a bag. This could otherwise lead to a reduction in performance.
[0038] The method according to the invention is suitable for operating a rotatably mounted component as described above. A predetermined pressure is applied or controlled by introducing at least one fluid into the flow channel by means of a pressure control valve, wherein the predetermined pressure is monitored by the pressure sensor device.
[0039] The method according to the invention also offers the advantages already described above for the rotatably mounted component.
[0040] The pressure control valve is preferably designed as a proportional pressure control valve.
[0041] Preferably, the proportional pressure control valve is then controlled via at least one PWM signal. In expedient embodiments, at least one PWM signal is generated based on the data from the pressure sensor device and transmitted to the proportional pressure control valve in order to set and / or maintain the predetermined pressure. This allows a predetermined pressure to be provided in the flow channel particularly effectively and precisely.
[0042] Preferably, as wear increases, the pressure control valve is opened further and further, for example, until it reaches an opening of 90%, to signal that the sealant needs to be serviced or should be serviced soon. The system is preferably designed such that the pressure control valve directs fluid into the flow channel with an initial relatively small opening of, for example, approximately 10%.
[0043] Preferably, a leak and / or wear of at least one sealing element or the sealing device is determined based on the data of the pressure sensor device and / or the change in the PWM signal required for a specific pressure.
[0044] Particularly preferably, fluid flowing from the flow channel into the functional section is discharged via the venting channel without penetrating further into the functional section. For example, in the event of a leak and / or intentional permanent, cyclically controlled and / or intermittent flow, fluid or air flowing from the flow channel into the functional section can be discharged without penetrating further into the functional section. In particular, the penetration of fluid further into the functional section is prevented or reduced, whereby a type of forced venting occurs through the venting channel. For example, if the functional element is a rotary valve, unwanted or uncontrolled air entering the product flow must be avoided, as this would lead to a change in the flow properties of the product and excess air or fluid must be laboriously removed after filling into a container, e.g. a bag.As previously explained for the rotating component, this could otherwise lead to a reduction in performance.
[0045] The flow channel preferably comprises at least one nozzle, wherein the pressure control valve is controlled in such a way that a fluid stream is blown out through the nozzle. Such blowing out of fluid or air from the nozzle or from the flow channel can, in particular, be used to clean the flow channel.
[0046] Preferably, the pressure control valve is controlled such that the fluid flow is expelled from the nozzle in a burst-like manner. The nozzle is then particularly closable and / or comprises at least one pressure relief valve and / or is designed as such. Such a burst-like expulsion of a fluid flow can be provided, in particular, when using a proportional pressure control valve. This allows, for example, particularly effective cleaning of the flow channel or expulsion of product or the like from the flow channel, in particular using pulse width modulation as the control signal for a proportional pressure control valve.
[0047] Further advantages and features of the present invention will become apparent from the embodiment which will be explained below with reference to the accompanying figures.
[0048] The figures show:
[0049] Fig. 1 is a purely schematic plan view of a packing system with a filling module with an embodiment of a rotatably mounted component according to the invention; Fig. 2 is a purely schematic representation of a filling module with an embodiment of a rotatably mounted component according to the invention in a perspective view;
[0050] Fig. 3 is a purely schematic representation of a rotatably mounted component according to the invention in a perspective view;
[0051] Fig. 4 is a purely schematic representation of a rotatably mounted component according to the invention in another perspective view; and
[0052] Fig. 5 is a purely schematic representation of a rotatably mounted component according to the invention in a sectional view.
[0053] Figure 1 shows a purely schematic plan view of a packing system 100 for filling bulk material. The packing system 100 is designed here as a rotating packing system 100 with several filling modules 101, each of which has a filling nozzle 102 directed radially outward. An empty bag 200 can then be placed onto each filling nozzle 102 and filled while the packing system 100 rotates. In particular, so-called valve bags can be used.
[0054] For the automatic insertion of the empty bags 200, an automatic bag insertion plug 300 is provided in the embodiment shown here, which receives empty bags from a magazine in the embodiment shown into a firing channel and shoots them onto a free filling nozzle 102 when the latter passes through the firing channel.
[0055] During the rotation of the packing machine 100, the bag 200 attached to a filling nozzle 102 is filled and, after one revolution of the packing system 100, transferred to a bag removal device 400. Figure 2 shows a purely schematic perspective view of a filling module 101, as installed in Figure 1. It is shown here that a rotatably mounted component 1 according to the invention is installed in each of the filling modules 101, which component is provided here as a closure member 50 for the filling channel 103 of the filling module 101.
[0056] In the installed state, the filling nozzle 102 is connected to the filling channel 103 or to the outlet of the channel 103, onto which the empty bags 200 are then shot for filling.
[0057] It is further shown that the filling module 101 comprises a filling pot 104 into which bulk material to be filled is fed from a silo. In the exemplary embodiment shown here, a conveying element 105, which is designed here as a conveying turbine 106, is provided in the filling pot 104 for filling the bulk material into the empty bags. By operating the conveying turbine 106, bulk material is conveyed through the filling channel 103 into the filling nozzle 102 and then filled into the attached bags 200. The filling turbine 106 or the turbine wheel with the corresponding drive shaft can also be provided by a rotatably mounted component 1 according to the invention. Thus, the sealing of the drive shaft from the turbine wheel can be achieved according to the invention via a so-called purge air seal.
[0058] To ensure that a defined amount of bulk material can be filled into the bags 200, a closure member 50, which is designed here as a so-called rotary valve 51, is provided in the filling channel 103. This rotary valve 51 can be used to close the filling channel 103 so that after the filling process is complete, i.e., when the conveyor turbine 106 is switched off, no further bulk material can trickle into the bag. In this way, a defined amount of bulk material can be filled into a bag 200. For this purpose, the closure member 50 or rotary valve 51 comprises a closure element 52, which is rotatably arranged in the filling channel 103.
[0059] In Figures 3 and 4, an embodiment of a rotatably mounted component 1 according to the invention is shown purely schematically in two perspective views, wherein here too the rotatably mounted component 1 is designed as a closure member 50 of a packaging system 100 or as a closure member 50 for the filling channel 103 of a filling module 101 of a packaging system 100.
[0060] The rotatably mounted component 1 according to the invention comprises a shaft section 2 and a functional section 3, which are sealed from one another by means of at least one sealing device 4. The shaft section 2 comprises, in particular, at least one shaft 2a or at least one drive shaft 2a and at least one functional element 3a.
[0061] In the exemplary embodiment shown, the functional section 3 or the functional element 3a is provided by a closure element 52, since in the exemplary embodiment shown here the rotatably mounted component is designed as a rotary slide valve 51 or as a closure member 50 for a filling module 101 of a packaging system 100.
[0062] It can be seen that the shaft section 2 or the shaft 2a or the drive shaft 2a for rotating the functional section 3 is operatively connected to a drive 17, which can be designed as shown in the figures or can also cause a rotation of the shaft 2a or the shaft section 2 in a known manner.
[0063] Figure 4 also shows a line 9, via which a fluid can be fed into a flow channel 8 within the housing 5 of the sealing device 4. According to the invention, the fluid supply is controlled via a pressure control valve 10, with a proportional pressure control valve 11 being provided in the embodiment shown here. In the embodiment shown, the proportional pressure control valve is controlled via a control device 18.
[0064] In the illustrated embodiment, the proportional pressure control valve 11 is controlled by a pulse width modulation (PWM) signal, which is transmitted from the control device 18 to the proportional pressure control valve 11. In the illustrated embodiment, the control device 18 can provide, adapt, or make available a corresponding PWM signal based on the data determined by a pressure sensor device 12.
[0065] Figure 5 shows a purely schematic side sectional view of a component 1 according to the invention. The exemplary embodiment of a rotatably mounted component 1 shown here corresponds to the exemplary embodiment already shown in Figures 3 and 4. Thus, a closure member 50 or rotary valve 51 is also shown here as a rotatably mounted component 1 according to the invention.
[0066] The sectional view shows that the rotatably mounted component 1, or the closure member 50, or the rotary slide valve 51, has a shaft section 2 and a functional section 3. The shaft section 2 comprises a shaft 2a, and the functional section 3 comprises a functional element 3a, which is also provided as a closure element 52 in the exemplary embodiment shown here. Depending on its rotation, the closure element 52 can close the filling channel 103 of the filling module 101, so that no further bulk material can trickle out when bulk material is being filled into bags. In the exemplary embodiment shown here, the shaft section 2, or the shaft 2a, is rotatably mounted in the housing 5 by means of rolling bearings 19.
[0067] To seal the shaft section 2 from the functional section 3, a sealing device 4 is provided, with the housing 5 being provided at least in the region of the sealing device 4 for this purpose. The sealing device 4 comprises a first sealing means 6 and a second sealing means 7, with a flow channel 8 being provided between the first and second sealing means 6, 7 and the housing 5 and the shaft section 2 or the shaft 2a. The fluid supply into this flow channel 8 can be precisely controlled by means of a pressure control valve 10 or, in this case, by means of a proportional pressure control valve 11.
[0068] By applying a specific pressure to the flow channel 8, product from the filling channel 3 can be effectively prevented from reaching the rolling bearings 19 when the rotatably mounted component 1 rotates. This ensures a long service life of the rotatably mounted component 1.
[0069] In the embodiment shown here, the first sealing means 6 and the second sealing means 7 are designed as shaft sealing rings 13, wherein the shaft sealing rings 13 are each secured from the flow channel 8 with safety devices or safety rings 20.
[0070] Furthermore, Figure 5 shows that a nozzle 14 is provided in operative connection to the flow channel 8, which nozzle can be designed as a pressure relief valve 15 depending on the embodiment.
[0071] By using a pressure control valve 10, or in this case a proportional pressure control valve 11, a defined pressure can be generated in the flow channel 8. This results in a good seal between the shaft section 2 and the functional section 3.
[0072] Furthermore, the use of a proportional pressure control valve 11 makes it possible to generate a particularly precise, predetermined pressure in the flow channel 8 and also, for example, to enable a burst of venting of the flow channel 8. This can be particularly advantageous if contamination has accumulated within the flow channel 8, for example, if a certain leak has occurred in the direction of the shaft section 2, with extremely fine products being particularly critical here.
[0073] By means of the shock-like blowing out, the flow channel 8 can be cleaned again, so that contamination of the rolling bearings 19 is effectively prevented. By means of the shock-like venting of the flow channel, any contamination can then escape, in which case a nozzle 14 is preferably provided, through which the product is discharged. This nozzle 14 can, for example, be closable, in which case it is then released or opened before the shock-like venting is applied. If the nozzle 14 is designed as a pressure relief valve 15, a pressure surge can also be selected which is set such that the flow channel 8 is automatically cleaned by activating the pressure relief valve.
[0074] Furthermore, it is possible to enable monitoring of the tightness of the sealing device 4 by using a pressure control valve 10 and in particular a proportional pressure control valve 11 controlled by a PWM signal. For example, the necessary change in the PWM signal to maintain a predetermined pressure in the flow channel 8 can be used to determine the wear of at least one sealing means 6, 7, with the sealing means 6 facing the functional section 3 being particularly relevant.
[0075] Since the PWM signal can be continuously changed or adjusted, particularly when using a pressure sensor device 2 to monitor the pressure in the flow channel 8, there is no need to maintain compressed air or apply an unnecessarily high pressure from the outset, thus ensuring sufficient ventilation of the flow channel over the desired operating period. This allows for overall savings in compressed air and thus energy.
[0076] Should there ever be an excessive leak, particularly of the first sealing means 6 in the direction of the functional section 3, fluid or compressed air from the flow channel 8 could penetrate into the functional section 3 and, in the worst case in the embodiment shown here, penetrate into the filling channel 103, whereby fluid or air could get into the product to be filled, which must be prevented.
[0077] To prevent this, a venting channel 16 is provided adjacent to the first sealing means 6 or to the sealing means 6 which is arranged adjacent to the functional section 3, via which venting channel the fluid flowing under or through the first sealing means 6 can be discharged again. For this purpose, a circumferential flow channel 16 is provided on the closure element 52, which in the embodiment shown here has an outlet 21 to the environment at the lower end.
[0078] Further penetration of fluid or purge air into the functional section 3 is prevented by a sealing element 22, with the venting channel 16 being arranged between the sealing element 22 and the sealant 6. Thus, the purge air entering the functional section 3 is virtually forced away via the venting channel 16. Furthermore, the sealant 16 largely prevents the product from passing from the filling channel toward the shaft section 2.
[0079] Product that migrates from the filling channel 103 toward the shaft section 2 can also be discharged via this venting channel 16. This ensures a particularly good separation between the shaft section 2 and the functional section.
[0080] List of reference symbols
[0081] 1 Component 104 Filling pot
[0082] 2 Shaft section 105 conveyor element
[0083] 2a Shaft / drive shaft 106 for the turbine
[0084] 3 functional section 200 bags
[0085] 3a Functional element 300 Sackauf plug
[0086] 4 Sealing device 400 bag removal
[0087] 5 housings
[0088] 6 first sealant
[0089] 7 second sealant
[0090] 8 flow channel
[0091] 9 Management
[0092] 10 Pressure control valve
[0093] 11 Proportional
[0094] Pressure control 1 valve
[0095] 12 Pressure sensor device
[0096] 13 Shaft seal
[0097] 14 nozzle
[0098] 15 Pressure relief valve
[0099] 16 Ventilation duct
[0100] 17 Drive
[0101] 18 Control device
[0102] 19 rolling bearings
[0103] 20 Safety device
[0104] 21 outlets
[0105] 22 Sealing element
[0106] 50 closure organ
[0107] 51 rotary valves
[0108] 52 closure element
[0109] 100 packing machines
[0110] 101 Filling module
[0111] 102 filler neck
[0112] 103 Filling channel
Claims
Claims:
1. A rotatably mounted component (1), comprising at least one shaft section (2) with at least one shaft (2a) and at least one functional section (3) received thereon, wherein at least one sealing device (4) is assigned to the shaft section (2), wherein the shaft section (2) and the functional section (3) are sealed from one another by means of the sealing device (4), wherein the shaft section (2) is received in at least one housing (5) at least in the region of the sealing device (4), and wherein the sealing device (4) comprises at least one first sealing means (6) and at least one second sealing means (7), wherein at least one flow channel (8) is formed between the shaft (2a) and the housing between the two sealing means (6, 7), wherein at least one line (9) is connected to the flow channel (8), by means of which line at least one fluid can be fed into the flow channel (8), characterized in thatthat at least one pressure control valve (10) and at least one pressure sensor device (12) are provided to regulate the fluid supply into the flow channel (8), and that at least one venting channel (16) is provided at least in the functional section (3) adjacent to the first sealing means (6).
2. Component (1) according to claim 1, wherein the pressure control valve (10) is designed as a proportional pressure control valve (11).
3. Component (1) according to claim 2, wherein the proportional pressure control valve (11) can be controlled via at least one PWM signal.
4. Component (1) according to the preceding claim, wherein the control is carried out via the sensor data determined by the pressure sensor device (12). Component (1) according to one of the preceding claims, wherein at least one sealing means (6, 7) comprises at least one shaft sealing ring (13). Component (1) according to one of the preceding claims, wherein the flow channel (8) comprises at least one nozzle (14). Component (1) according to the preceding claim, wherein the nozzle (14) is closable and / or is designed as a pressure relief valve (15). Component (1) according to one of the preceding claims, wherein the mounted component (1) is a closure member (50) of a packaging system (100) for filling bulk material. Component (1) according to one of the preceding claims, wherein the functional section comprises at least one sealing element (22), wherein the venting channel (16) is arranged between the sealing element (22) and the first sealing means (6). Method for operating a rotatably mounted component (1) according to one of the preceding claims, characterized by the application of a predetermined pressure by introducing at least one fluid into the flow channel (8) by means of the pressure control valve (10), wherein the predetermined pressure is monitored by means of the pressure sensor device (12). Method according to the preceding claim, wherein the pressure control valve (10) is designed as a proportional pressure control valve (11). Method according to the preceding claim, wherein the proportional pressure control valve (11) is controlled via at least one PWM signal. Method according to one of the preceding claims 10 to 12, wherein based on the data of the pressure sensor device (12) at least one PWM signal is generated and transmitted to the proportional Pressure control valve (11) is transferred in order to maintain the predetermined pressure. Method according to one of the preceding claims 10 to 13, wherein a leak and / or wear of the sealing device (4) and / or at least one sealing element (6, 7) is concluded on the basis of the data from the pressure sensor device (12). Method according to one of the preceding claims 10 to 14, wherein fluid flowing from the flow channel (8) into the functional section (3) is discharged via the venting channel (16) without penetrating further into the functional section (3). Method according to one of the preceding claims 10 to 15, wherein the flow channel (8) comprises at least one nozzle (14) and wherein the pressure control valve (10) is controlled such that a fluid flow is blown out via the nozzle (14). Method according to the preceding claim, wherein the pressure control valve (10) is controlled such that the fluid flow is blown out in a burst via the nozzle (14).