Rotary support member and method of operating same

Abstract

The invention relates to a rotary bearing component (1) comprising a shaft part (2) and a functional part (3) integrated into said shaft part, the shaft part (2) being provided with a sealing element (4), the shaft part (2) and the functional part (3) being sealed from one another by means of the sealing element (4). The shaft part (2) is accommodated in the housing (5) in the region of the sealing element (4), and the sealing element (4) comprises a first sealing element (6) and a second sealing element (7), a flow channel (8) being formed between the two sealing elements (6, 7) and between the shaft part (3) and the housing. Furthermore, a line (9) is connected to the flow channel (8), through which line at least one fluid can be fed into the flow channel (8). A pressure regulating valve (10) and a pressure sensor device (12) are provided for regulating the supply of fluid into the flow channel (7). Furthermore, a ventilation duct (16) is provided in the functional part (3) adjacent to the first seal (6). Also provided is a method of operating such a component (1), in which a predetermined pressure is applied by introducing at least one fluid into the flow channel (8) via the pressure regulating valve (10), the predetermined pressure being monitored by the pressure sensor device (12).

Description

Field of the Invention

[0001] The present invention relates to a rotary support member, which includes at least one shaft portion and at least one functional portion integrated thereon. The shaft portion is provided with at least one sealing member, wherein the shaft portion and the functional portion are sealed from each other through the sealing member. The shaft portion is received in at least one housing at least in the region of the sealing member, and the sealing member includes at least one first seal and at least one second seal. Between the two seals, at least one flow channel is formed between the shaft portion or between the shaft and the housing, and at least one pipeline is connected to the flow channel, and at least one fluid can be conveyed into the flow channel through the pipeline. The present invention also relates to a method for operating such a component. Background Art

[0002] In the prior art, rotary support members have presented various forms in design. Generally, a rotary support member usually includes a drive shaft, through which a tool or other functional element can rotate or turn.

[0003] For example, in a packaging system for filling bulk materials into a container, according to the design, a rotary support closing member is provided in the filling channel, which can close or open the channel according to the rotational position. Such a rotary valve also includes a shaft and a closing element as a functional element. Such a so-called rotary valve is known, for example, from DE 102011119624 A1.

[0004] For a rotary support member, it is particularly important to keep the bearing area of the shaft free from contamination so as not to affect the rotational action of the shaft.

[0005] Especially in the case of the closing member of a packaging system or a rotary valve, especially when filling fine and / or the finest products, it is very important but difficult to keep the product away from the bearing area of the shaft. Summary of the Invention

[0006] Therefore, the fundamental problem of the present invention is to provide a rotary support member, such as a closing member (such as a rotary valve) for a filling channel of a filling module of a packaging system, which can also operate reliably when filling very fine products.

[0007] The above problem is solved by a rotary support member having the features of claim 1 and a method for operating a rotary support member having the features of claim 10. Preferred improvements of the present invention form the subject matter of the dependent claims. Other advantages and features of the present invention will be reflected in the following overview and description of embodiments.

[0008] The rotational support member according to the present invention includes at least one shaft portion and at least one functional portion, and the functional portion is integrated with or operatively connected to the shaft portion. Specifically, the shaft portion includes at least one shaft or drive shaft, and the functional portion includes at least one functional element. At least one sealing member is disposed on the shaft portion, wherein the shaft portion and the functional portion are sealed from each other by the sealing member. The shaft portion or the shaft is received in at least one housing at least in the region of the sealing member, and the sealing member includes at least one first seal and at least one second seal, and at least one flow passage is formed between the shaft portion or the shaft and the housing. In addition, at least one pipeline is connected to or can be connected to the flow passage, and at least one fluid can be conveyed to the flow passage through the pipeline. At least one pressure regulating valve and at least one pressure sensor device are provided for regulating the fluid supply into the flow passage. In addition, at least one ventilation duct is provided in the functional portion adjacent to the first seal.

[0009] Specifically, the shaft portion includes at least one rotational support shaft. The shaft or the shaft portion can preferably be driven to rotate in any known manner. Depending on the specific application, the preferred driving methods are rotation and / or revolution.

[0010] In particular, the functional portion is directly connected to the shaft portion, integrally formed, and / or operatively connected to the shaft portion.

[0011] In particular, the functional portion includes at least one functional element that performs a specific function when rotated by means of the shaft portion or the shaft.

[0012] For example, the rotational support member can preferably be configured as a so-called rotary valve, or such a rotary valve is provided, wherein the rotary valve is a closing member of a packaging system for filling bulk materials or other products into packaging bags or the like. The rotary valve or the closing member preferably includes at least one closing element disposed in the filling channel, and the filling channel is more or less opened or closed according to the rotation or position of the closing element.

[0013] However, according to the design, the functional element can preferably also be, for example, the turbine impeller of a filling turbine or the closing element of a rotary valve.

[0014] Preferably, at least one control device is provided to control the pressure regulating valve.

[0015] Preferably, the functional portion can be rotated by rotating the shaft portion. For this purpose, the shaft portion or the shaft is particularly operatively connected to at least one drive.

[0016] The shaft or the shaft portion preferably includes at least one bearing, particularly at least one rolling bearing.

[0017] The flow channel is specifically configured as a pressure chamber. The pressure chamber preferably extends around the axis in a channel shape and can build up pressure within the pressure chamber or the flow channel. Wherein, according to the applied pressure, a certain amount of fluid can enter the functional part from the flow channel or the pressure chamber as so-called cleaning air.

[0018] For this purpose, at least the seal adjacent to the functional part can preferably be at least slightly rinsed or flushed by the fluid in the flow channel, so that a certain amount of cleaning air enters the functional part, which depends on the sealing effect or state of the seal.

[0019] In particular, a so-called cleaning air seal is provided, through which it is possible to effectively prevent or at least significantly reduce the entry of products or other impurities from the functional part into the shaft part.

[0020] The component according to the present invention has many advantages. A significant advantage is that a predetermined pressure can be generated in the flow channel by a pressure regulating valve, thereby achieving an extremely effective and good seal between the shaft part and the functional part. This is because, even if leakage almost inevitably occurs in the seal of the functional part, the cleaning air escaping in the direction of the functional part can prevent or at least greatly reduce the entry of dust into the shaft part.

[0021] By using a pressure regulating valve to regulate the predetermined pressure in the flow channel, a particularly good seal can be achieved because, in particular, a defined flushing of the sealing element can be achieved.

[0022] Compared with the design in the prior art that regulates the fluid supply through a pressure reducer and a manual throttle valve, another advantage of this design is that, for example, through a pressure regulating valve, the wear condition can also be detected and air can be supplied briefly, for example, for blowing out impurities. This is particularly advantageous when the component is designed as a rotary valve because sometimes very fine bulk materials are filled, and according to the design, these materials may enter the shaft part when the shaft or the shaft part rotates. In addition, if too much cleaning air escapes in the direction of the functional part due to increased wear, the replacement interval of the seal can preferably be indicated.

[0023] In addition, since the total consumption of compressed air or the required amount of fluid can be reduced by a pressure regulating valve, there is no need to reserve standby air.

[0024] The pressure regulating valve is preferably designed as a proportional pressure regulating valve. In particular, using a proportional pressure regulating valve can achieve extremely precise control of fluid supply.

[0025] Particularly preferably, the proportional pressure regulating valve can be controlled by at least one pulse width modulation signal (PWM signal). In particular, the predetermined pressure in the flow channel can be set and / or maintained very precisely by pulse width modulation. Preferably, the wear of the sealing component or seal can also be detected by the change of the PWM signal to maintain the predetermined pressure. The control device can preferably transmit the PWM signal to the proportional pressure regulating valve.

[0026] According to the present invention, at least one pressure sensor device is provided. The pressure sensor device can in particular be arranged in the pipeline or supply pipeline where the fluid enters the flow channel, wherein the pressure sensor device preferably includes at least one pressure sensor, especially as a switch.

[0027] In a suitable improvement scheme, the control of the pressure regulating valve is based on the sensor data determined by the pressure sensor device. In particular, the internal pressure of the flow channel is controlled by the corresponding adjustment of the pressure regulating valve or proportional pressure valve, especially by adjusting the corresponding signal or PWM signal.

[0028] Preferably, at least one seal includes at least one shaft seal ring or constitutes a shaft seal ring. The shaft seal ring can be fixed, for example, on the side facing away from the flow channel by a fixing ring and / or the like.

[0029] Particularly preferably, the flow channel includes at least one nozzle. In particular, the nozzle provides communication between the flow channel and the surrounding air.

[0030] Preferably, the nozzle can be closed and / or designed as a pressure relief valve. Thus, for example, the dirt in the flow channel can be blown out through the nozzle or pressure relief valve. In particular, the dirt can be blown out by providing a short burst of air flow.

[0031] In particular, the support member is a closing component of a packaging system for filling bulk materials. The functional part is preferably designed as a closing element, for example, if it is rotatably arranged in the filling channel of the filling module.

[0032] According to the present invention, at least one ventilation duct is provided adjacent to the first seal at least within the functional part. The first seal is particularly the seal facing the functional part. In this way, for example, in the case of leakage and / or intentional permanent, timed, and / or temporary flow, the fluid or air flowing from the flow channel into the functional part can be discharged through this ventilation duct without further infiltrating into the functional part.

[0033] The functional part preferably includes at least one sealing element, and a ventilation duct is arranged between the sealing element and the first seal or the seal facing the functional part. The seal can form a forced ventilation through the ventilation duct, thereby preventing or reducing the further infiltration of fluid into the functional part. For example, if the functional part is a rotary valve, it is necessary to avoid the accidental or uncontrolled infiltration of air into the product flow, because this will cause changes in the product flow characteristics, and after the product is filled into a container (such as a packaging bag), the excess air or fluid must be removed again in an expensive way. Otherwise, this may lead to a decline in performance.

[0034] As described above, the method according to the present invention is applicable to operating a rotary support member. At least one fluid is introduced into the flow channel through a pressure regulating valve, and a predetermined pressure is applied or controlled, wherein the predetermined pressure is monitored by a pressure sensor device.

[0035] The method according to the present invention also provides the advantages listed above with respect to the rotary support member.

[0036] The pressure regulating valve is preferably designed as a proportional pressure regulating valve.

[0037] Preferably, the proportional pressure regulating valve is controlled by at least one PWM signal.

[0038] In a suitable embodiment, at least one PWM signal is generated based on the data from the pressure sensor device and transmitted to the proportional pressure regulating valve to adjust and / or maintain the predetermined pressure. Thus, the predetermined pressure can be provided particularly effectively and precisely in the flow channel.

[0039] As the wear intensifies, the pressure regulating valve preferably gradually opens until it reaches an opening degree of, for example, 90%, in order to send a signal indicating that the seal must or should be maintained as soon as possible. The system is preferably designed such that the pressure regulating valve delivers the fluid to the flow channel with an initially small opening degree (such as about 10%).

[0040] Preferably, the leakage and / or wear of at least one sealing element or sealing component is inferred based on the data from the pressure sensor device and / or the change in the PWM signal required for a specific pressure.

[0041] Particularly preferably, the fluid flowing into the functional part from the flow channel is discharged through the ventilation duct without further penetrating into the functional part. Thus, for example, in the case of leakage and / or intentional permanent, timed, and / or temporary flow, the fluid or air flowing into the functional part from the flow channel can be discharged without further penetrating into the functional part. In particular, a forced ventilation can be formed through the ventilation duct, thereby preventing or reducing the further penetration of the fluid into the functional part. For example, if the functional element is a rotary valve, it should be prevented that air accidentally or in an uncontrolled manner penetrates into the product flow, because this will cause changes in the product flow characteristics, and after the product is filled into a container (such as a packaging bag), the excess air or fluid must be removed again in an expensive way. As described above regarding the rotary support member, otherwise this may lead to a performance decline.

[0042] The flow channel preferably includes at least one nozzle, and the pressure regulating valve is controlled in such a way that a fluid stream is ejected through the nozzle. Specifically, the flow channel can be cleaned by ejecting fluid or air from the nozzle or the flow channel.

[0043] The pressure regulating valve is preferably controlled such that the fluid stream bursts out of the nozzle. Specifically, the nozzle is designed to be closable and / or includes at least one pressure relief valve and / or is configured in this way. Such a bursting ejection of the fluid stream can be achieved especially by using a proportional pressure regulating valve. For example, especially by using pulse width modulation as the control signal for the proportional pressure regulating valve, a particularly effective cleaning of the flow channel or ejection of the product from the flow channel can be achieved. Description of the Drawings

[0044] Further advantages and features of the present invention emerge from the examples of the embodiments, which will be explained below with reference to the drawings.

[0045] In the figures:

[0046] Figure 1 A purely schematic plan view of a packaging system with a filling module is shown, where the filling module has an exemplary embodiment of a rotary support member according to the present invention;

[0047] Figure 2 A purely schematic view of the filling module is shown in perspective, where the filling module has an exemplary embodiment of a rotary support member according to the present invention;

[0048] Figure 3 A purely schematic view of the rotary support member according to the present invention is shown in perspective;

[0049] Figure 4 A purely schematic view of the rotary support member according to the present invention is shown in another perspective; and

[0050] Figure 5 A purely schematic view of a rotary support member according to the present invention is shown in a cross-sectional view.

[0051] Reference numerals

[0052] 1 - Component; 2 - Shaft portion; 2a - Shaft / drive shaft; 3 - Functional portion; 3a - Functional element; 4 - Sealing component; 5 - Housing; 6 - First seal; 7 - Second seal; 8 - Flow channel; 9 - Pipeline; 10 - Pressure regulating valve; 11 - Proportional pressure regulating valve; 12 - Pressure sensor device; 13 - Shaft seal ring; 14 - Nozzle; 15 - Pressure relief valve; 16 - Ventilation duct; 17 - Driver; 18 - Control device; 19 - Rolling bearing; 20 - Safety device; 21 - Outlet; 22 - Sealing element; 50 - Closing component; 51 - Rotary valve; 52 - Closing element; 100 - Packaging system; 101 - Filling module; 102 - Filling nozzle; 103 - Filling channel; 104 - Filling box; 105 - Conveyor mechanism; 106 - Conveyor turbine; 200 - Packaging bag; 300 - Bag inserter; 400 - Bag removal system. Detailed description of the invention

[0053] Figure 1 A packaging system 100 for filling bulk materials is shown purely schematically in a plan view. The packaging system 100 is designed here as a rotary packaging system 100 with a plurality of filling modules 101, each filling module including a radially outward filling nozzle 102. Subsequently, empty packaging bags 200 can be respectively installed on the filling nozzles 102 and filled during the rotation of the packaging line 100. In particular, so-called valve bags can be used.

[0054] For the automatic installation of empty packaging bags 200, an automatic bag inserter 300 is provided in the embodiment shown here. The automatic bag inserter takes empty packaging bags from the stack in the shown embodiment and places them into a chute channel, and installs them onto the empty filling nozzles 102 as the empty packaging bags pass through the chute channel.

[0055] During the rotation of the packaging machine 100, the packaging bags 200 connected to the filling nozzles 102 are filled and conveyed to the bag removal system 400 after one full rotation of the packaging system 100.

[0056] Figure 2 A purely schematic view in a perspective view shows the filling module 101 as Figure 1 shown. As can be seen from the figure, in each filling module 101, a rotary support member 1 according to the present invention is installed, which is provided here as a closing component 50 for the filling channel 103 of the filling module 101.

[0057] In the installed state, the filling channel 103 or the outlet of the channel 103 is connected to the filling nozzle 102, and then an empty packaging bag 200 is inserted onto the filling nozzle 102 for filling.

[0058] In addition, the filling module 101 shown in the figure also includes a filling box 104, and the bulk material to be filled enters the filling box from the silo. In order to fill the bulk material into an empty packaging bag, in the embodiment shown here, a conveying mechanism 105 is provided in the filling box 104, and the conveying mechanism is designed as a conveying turbine 106 here. Through the operation of the conveying turbine 106, the bulk material is conveyed through the filling channel 103 to the filling nozzle 102 and then filled into the connected packaging bag 200. According to the present invention, the filling turbine 106 or the turbine impeller with a corresponding drive shaft can also be realized by the rotary support member 1. According to the present invention, the drive shaft and the turbine impeller can be sealed by a so-called clean gas seal.

[0059] In order to fill a limited amount of bulk material into the packaging bag 200, a closing member 50 is provided in the filling channel 103, which is configured as a so-called rotary valve 51 here. With the help of the rotary valve 51, the filling channel 103 can be closed, so that after the filling process is completed (i.e., when the conveying turbine 106 is closed), no bulk material will continue to flow into the packaging bag. In this way, a limited amount of bulk material can be filled into the packaging bag 200. For this purpose, the closing member 50 or the rotary valve 51 includes a closing element 52, and the closing element 52 is rotatably arranged in the filling channel 103.

[0060] Figure 3 and Figure 4 Embodiments of the rotary support member 1 according to the present invention are shown purely schematically in the form of two perspective views, where the rotary support member 1 here is configured as the closing member 50 of the packaging system 100 or as the closing member 50 of the filling channel 103 of the filling module 101 for the packaging system 100.

[0061] The rotary support member 1 according to the present invention includes a shaft portion 2 and a functional portion 3, which are sealed from each other by at least one sealing member 4. Specifically, the shaft portion 2 includes at least one shaft 2a or at least one drive shaft 2a and at least one functional element 3a.

[0062] In the embodiment shown, the functional portion 3 or the functional element 3a is provided by the closing element 52, because in the embodiment shown here, the rotary support member is configured as the rotary valve 51 or the closing member 50 of the filling module 101 for the packaging system 100.

[0063] It can be seen that the shaft portion 2 or the shaft 2a or the drive shaft 2a for rotating the functional portion 3 is operatively connected to the drive 17, which can be designed as shown or can also cause the rotation of the shaft 2a or the shaft portion 2 in other known ways.

[0064] In addition, Figure 4 A pipeline 9 is shown, through which fluid can be conveyed into the flow channel 8 in the housing 5 of the sealing member 4. According to the present invention, the fluid supply is controlled by a pressure regulating valve 10, and a proportional pressure regulating valve 11 is provided in the embodiment shown here. In the embodiment shown, the control of the proportional pressure regulating valve is carried out by a control device 18.

[0065] In the embodiment shown, the proportional pressure regulating valve 11 is controlled by a pulse width modulation signal (PWM signal), and the signal is transmitted from the control device 18 to the proportional pressure regulating valve 11. In the example of the embodiment shown, the control device 18 can provide, adjust or generate a corresponding PWM signal according to the data determined by the pressure sensor device 12.

[0066] Figure 5 A side cross-sectional view of the component 1 according to the present invention is shown in a purely schematic manner. The embodiment of the rotary support member 1 shown here corresponds to Figure 3 and Figure 4 the embodiment shown therein. Therefore, the closing member 50 or the rotary valve 51 shown here is also represented as the rotary support member 1 according to the present invention.

[0067] It can be seen from the cross-sectional view that the rotary support member 1 or the closing member 50 or the rotary valve 51 includes a shaft portion 2 and a functional portion 3. The shaft portion 2 includes a shaft 2a and a functional portion 3 including a functional element 3a, and in the embodiment shown here, the functional element 3a is also provided as a closing element 52. According to the rotation situation, the closing element 52 can close the filling channel 103 of the filling module 101, so that no more bulk material will flow into the bag when filling the bulk material.

[0068] In the embodiment shown here, the shaft portion 2 or the shaft 2a is rotatably mounted in the housing 5 by means of a rolling bearing 19.

[0069] In order to seal the shaft portion 2 and the functional portion 3, a sealing member 4 is provided, and the housing 5 is at least provided in the area of the sealing member 4. The sealing member 4 includes a first seal 6 and a second seal 7, and a flow channel 8 is provided between the first seal 6 and the second seal 7 and between the housing 5 and the shaft portion 2 or the shaft 2a. The fluid flowing into the flow channel 8 can be precisely controlled by the pressure regulating valve 10 or the proportional pressure regulating valve 11.

[0070] By applying a certain pressure in the flow channel 8, it is possible to effectively prevent the product from flowing from the filling channel 3 to the rolling bearing 19 when the rotary support member 1 rotates. This ensures a longer service life of the rotary support member 1.

[0071] In the embodiment shown here, the first seal 6 and the second seal 7 are designed as shaft seal rings 13, wherein the shaft seal rings 13 are respectively fixed by the flow channel 8 with a safety component device or safety ring 20.

[0072] In addition, Figure 5 It is shown that the nozzle 14 is arranged to be operatively connected to the flow channel 8. According to the embodiment, the nozzle 14 can be designed as a pressure relief valve 15.

[0073] By using the pressure regulating valve 10 or the proportional pressure regulating valve 11 here, a defined pressure can be generated in the flow channel 8. This enables good sealing between the shaft part 2 and the functional part 3.

[0074] In addition, using the proportional pressure regulating valve 11 can generate an extremely precise predetermined pressure in the flow channel 8, and for example, the flow channel 8 can be ventilated by a short burst of air. This can be particularly advantageous if dirt accumulates in the flow channel 8, for example, if there is a certain degree of leakage in the direction of the shaft part 2, especially for extremely delicate products.

[0075] By purging with a short burst of air, the flow channel 8 can be cleaned again, thus effectively preventing the rolling bearing 19 from being contaminated. By ventilating the flow channel 8 with a short burst of air, contamination can be avoided, wherein preferably the nozzle 14 is arranged through which the product is discharged. The nozzle 14 can be closed, for example, and then opened or activated before the short burst of air ventilation. If the nozzle 14 is designed as a pressure relief valve 15, the pressure fluctuations can be selected, and the pressure fluctuations are set to automatically clean the flow channel 8 by activating the pressure relief valve.

[0076] In addition, the sealing performance of the sealing component 4 can be monitored by using the pressure regulating valve 10 (especially the proportional pressure regulating valve 11 controlled by a PWM signal). Therefore, for example, the wear of at least one of the seals 6, 7 can be inferred from the required change in the PWM signal to maintain the predetermined pressure in the flow channel 8, wherein the seal 6 facing the functional part 3 is particularly important.

[0077] Since the PWM signal can be continuously changed or adjusted, especially when using the pressure sensor device 2 to monitor the pressure in the flow channel 8, there is no need to always have compressed air ready or apply unnecessary high pressure from the beginning, thus ensuring that the flow channel can be fully ventilated during the required operating time. Overall, this saves compressed air and thus saves energy.

[0078] In the event of excessive leakage, especially leakage of the first seal 6 in the direction of the functional part 3, the fluid or compressed air from the flow channel 8 may penetrate into the functional part 3 and, in the worst case (in the embodiment shown here), even into the filling channel 103, so that the fluid or air may enter the product to be filled. Therefore, it is important to prevent this situation.

[0079] To prevent this, a ventilation duct 16 is provided adjacent to the first seal 6 or the seal 6 adjacent to the functional part 3. Through this ventilation duct, the fluid that flushes or flows through the first seal 6 can be discharged again. For this purpose, an annular flow channel 16 is provided on the closing element 52. In the present embodiment, the annular flow channel includes an outlet 21 leading to the environment at the lower end.

[0080] The sealing element 22 can prevent the fluid or cleaning air from further penetrating into the functional part 3, wherein the ventilation duct 16 is arranged between the sealing element 22 and the seal 6. Therefore, the cleaning air entering the functional part 3 is actually forced to be discharged through the ventilation duct 16. In addition, the seal 16 largely prevents the product from flowing from the filling channel to the shaft part 2.

[0081] The product can also be discharged through the ventilation duct 16, which migrates from the filling channel 103 in the direction of the shaft part 2. Thus, a particularly good separation between the shaft part 2 and the functional part is ensured.

Claims

1. A rotary support member (1) comprising at least one shaft portion (2) with at least one shaft (2a) and at least one functional portion (3) integrated thereon, wherein, At least one sealing member (4) is arranged on the shaft portion (2), wherein the shaft portion (2) and the functional portion (3) are sealed from each other by the sealing member (4), wherein the shaft portion (2) is received in at least one housing (5) at least in the region of the sealing member (4), and wherein the sealing member (4) includes at least one first seal (6) and at least one second seal (7), wherein at least one flow channel (8) is formed between the two seals (6, 7) between the shaft (2a) and the housing, and wherein at least one pipeline (9) is connected to the flow channel (8), and at least one fluid can be conveyed into the flow channel (8) through this pipeline. It is characterized in that There is also provided at least one pressure regulating valve (10) and at least one pressure sensor device (12) for regulating the fluid supplied into the flow channel (8), and at least one ventilation duct (16) is provided at least in the functional portion (3) adjacent to the first seal (6).

2. The component (1) according to claim 1, wherein the pressure regulating valve (10) is designed as a proportional pressure regulating valve (11).

3. The component (1) according to claim 2, wherein the proportional pressure regulating valve (11) can be controlled via at least one pulse width modulation signal.

4. The component (1) according to the preceding claim, wherein, The control is based on the sensor data determined by the pressure sensor device (12).

5. The component (1) according to any one of the preceding claims, wherein at least one of the seals (6, 7) includes at least one shaft seal ring (13).

6. The component (1) according to any one of the preceding claims, wherein the flow channel (8) includes at least one nozzle (14).

7. The component (1) according to the previous claim, wherein the nozzle (14) can be closed and / or designed as a pressure relief valve (15).

8. The component (1) according to any one of the preceding claims, wherein, The support member (1) is a closing member (50) of a packaging system (100) for filling bulk materials.

9. The component (1) according to any one of the preceding claims, wherein the functional portion includes at least one sealing element (22), and the ventilation duct (16) is arranged between the sealing element (22) and the first seal (6).

10. A method for operating a rotary support member (1) according to any one of the preceding claims, characterized in that, At least one fluid is introduced into the flow channel (8) through the pressure regulating valve (10) to apply a predetermined pressure, and the predetermined pressure is monitored by the pressure sensor device (12).

11. The method according to the previous claim, wherein the pressure regulating valve (10) is designed as a proportional pressure regulating valve (11).

12. The method according to the previous claim, wherein the proportional pressure regulating valve (11) is controlled by at least one pulse width modulation signal.

13. The method according to any one of the preceding claims 10 to 12, wherein, At least one pulse width modulation signal is generated based on the data of the pressure sensor device (12), and the pulse width modulation signal is transmitted to the proportional pressure regulating valve (11) to maintain the predetermined pressure.

14. The method according to any one of the preceding claims 10 to 13, wherein Based on the data of the pressure sensor device (12), the leakage and / or wear of the sealing member (4) and / or at least one of the sealing elements (6, 7) are deduced.

15. The method according to any one of the preceding claims 10 to 14, wherein the fluid flowing from the flow channel (8) to the functional part (3) is discharged via the ventilation duct (16) without further penetrating into the functional part (3).

16. The method according to any one of the preceding claims 10 to 15, wherein, The flow channel (8) includes at least one nozzle (14), and wherein the pressure regulating valve (10) is controlled such that the fluid flow is ejected through the nozzle (14).

17. The method according to the preceding claim, wherein, The pressure regulating valve (10) is controlled such that the fluid flow is ejected suddenly through the nozzle (14).

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