Blow molding device and method for operating blow molding device
By introducing pressure reservoirs and sub-control pipelines into the control pipeline system of the blow molding equipment, the switching problem of the valve mechanism during disinfection in the single-loop guidance system is solved, ensuring the normal operation and sterile state of the valve mechanism during the disinfection process of the blow molding equipment.
Patent Information
- Application Number
- CN202510106145.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-01-23
- Filing Date
- 2025-01-23
- Publication Date
- 2025-07-25
Smart Images
Figure CN120363440A_ABST
Abstract
Description
Field of the Invention
[0001] The present invention relates to a blow molding device for blow molding, in particular for stretch blow molding containers. The blow molding device has a rotatably arranged carrier and a plurality of blow molding modules arranged on the carrier. Each of these blow molding modules has a container receiving part and a fluid conveying part assigned to the container receiving part for introducing blow molding fluid into the container. The container receiving part is in particular a blow mold which has an internal blow cavity, and wherein the container is introduced in the form of a preform and then plastically formed by introducing blow molding fluid. The fluid conveying parts are connected to a common conveying pipeline, wherein valve mechanisms for controlling the supply of blow molding fluid into the containers are respectively arranged in the fluid conveying parts, and wherein the valve mechanisms are connected to the conveying pipeline via a control pipeline system for switching.
[0002] The present invention in particular relates to blow molding devices from the field of food technology, in particular from the field of beverage technology. Accordingly, these containers are beverage containers, wherein, for example, during the blow molding process, a preform, which is also commonly referred to as a preform, is formed into a beverage bottle. Accordingly, the containers are formed of a thermoplastic material, in particular polyethylene terephthalate (PET), and are usually first heated, thereby softening the material so that subsequent plastic deformation can be achieved in a simple manner by introducing blow molding fluid. In addition, in the case of stretch blow molding, a so-called stretching rod is provided which causes axial elongation of the container body along the container axis. Background Art
[0003] It is known here that the blow molding fluid is provided via a conveying pipeline which is accordingly connected to the respective fluid conveying parts. Since the introduction of the blow molding fluid is of course not continuous but takes place in predefined time intervals, valve mechanisms for controlling the introduction of the blow molding fluid are also provided. Here, the valve mechanisms together form a valve device which can be connected, for example, to a common control device. Accordingly, the blow molding fluid can be introduced into the container only when the container is arranged in a closed blow mold. In the section where the blow mold is open and no container has been inserted yet, the conveying of the blow molding fluid can be stopped accordingly.
[0004] It is known from practice that the valve mechanisms are supplied with control fluid via a control pipeline system, so that accordingly, the valve mechanisms can be operated pneumatically. In principle, it is also conceivable to provide hydraulic regulation. However, due to the hydraulic oil required therefor, this design has only minor significance especially in the field of food technology. Accordingly, in particular, the following design has proven to be particularly effective, wherein the control fluid is constructed identically to the blow molding fluid, in particular in both cases the control fluid is compressed air, and wherein the switching of the valve mechanisms usually takes place at a lower pressure than the introduction of the blow molding fluid into the container.
[0005] In order to be able to implement this design solution, two different solutions have been developed in practice. Thus, for example, the blow molding fluid and the control fluid can be provided separately, so that these two fluids are accordingly provided through separate fluid supply units. In this case, the control pipeline system is constructed independently of the conveying pipeline, so that the switching of the valve mechanism is still possible even in the case of failure of the fluid supply unit for the blow molding fluid. This design solution is also referred to as dual-loop guidance.
[0006] An alternative solution provides a single-loop guidance system, in which not only the blow molding fluid but also the control fluid are provided through a common fluid supply unit, so that the control pipeline system is accordingly connected to the common conveying section and the common fluid supply section.
[0007] The advantage of this design solution is that the number of required pipeline components can be significantly reduced compared to dual-loop guidance, resulting in a simpler and more cost-effective structure. In this context, it should be particularly noted that the conveyance of the blow molding fluid and the control fluid must be achieved through a rotary joint. Thus, in the case of a single-loop guidance system, only one rotary joint is required, while in the case of dual-loop guidance, two separate rotary joints for the blow molding fluid and the control fluid are provided. In addition, the number of possible failure sources is also reduced, resulting in a smaller maintenance effort. However, the disadvantage of this design solution is also that in the case of failure of the fluid supply unit, the switching of the valve mechanism is no longer possible.
[0008] In addition, there is also the problem that the fluid conveyance section and the common conveyance pipeline cannot be easily disinfected. In this context, it should be noted that precisely when filling sensitive beverages, it must be ensured that the bacterial load is kept as low as possible during container forming. This is ensured in particular by keeping the pipeline system including the fluid conveyance section and the common conveyance pipeline aseptically. Accordingly, the pipeline system must be disinfected at certain time intervals, where, in the case of a single-loop guidance system, the disinfectant can reach the control pipeline system and thus also into the valve mechanism. Since the disinfectant is conveyed essentially without pressure, entering the control pipeline system results in no longer being able to maintain the required control pressure. Accordingly, disinfection in a single-loop guidance system has not been easily achievable to date. Summary of the Invention
[0009] Against this background, the object of the present invention is to enable the switching of the valve mechanism during the disinfection of the fluid conveyance section and the conveyance pipeline in a single-loop guidance system.
[0010] The subject matter and solution to this object is the blow molding device according to claim 1. In addition, the present invention also relates to a method according to claim 11.
[0011] According to the provisions of the present invention, the control pipeline system has a pressure reservoir with a volume of at least 5 liters, in particular. Accordingly, an additional pressure reservoir is provided in the control pipeline system, and a certain amount of blow molding fluid, in particular compressed air, is stored in this pressure reservoir, wherein the amount is set such that the valve mechanism of the blow molding device can be controlled for a preset number of switching cycles. It should be noted here that the blow molding fluid only means that this fluid is provided through the blow molding fluid supply unit, so that the fluid used to switch the valve mechanism is consistent with the fluid used for the plastic deformation molding of the container in terms of its composition. These fluids can only be different from each other in terms of the pressure level, wherein the pressure level in the control pipeline system and thus also the pressure level in the reservoir is lower than the pressure level in the delivery pipeline and the pressure level in the fluid delivery unit.
[0012] The size of the pressure reservoir depends not only on the number of switching cycles but also on the number of blow molding modules. Usually, the blow molding device includes between 4 and 36 blow molding modules. It should also be noted here that the valve mechanism can respectively have one or more valve elements, and these valve elements respectively achieve the delivery of the blow molding fluid at different pressures. It is known from practice in this case that each valve mechanism is provided with at least two or also three or more valve elements, so that the blow molding fluid can be delivered at two or three pressure levels accordingly. Accordingly, a larger number of switching cycles are also required when the number of valve elements increases. According to the present invention, preferably a total of four valve elements are used for each valve mechanism.
[0013] Now, with the present invention, the valve mechanism can be operated for a period of time independently of the fluid supply unit connected to the delivery pipeline, because the required amount of compressed air is stored in the compressed air reservoir.
[0014] Preferably, a pressure reducing valve is not arranged between the pressure reservoir and the delivery pipeline, so that the maximum pressure achievable in the pressure reservoir corresponds to the pressure in the delivery pipeline. In particular, this relates to pressures between 20 bar and 50 bar, especially between 25 bar and 40 bar. Such a high pressure enables a large amount of blow molding fluid to be stored in the volume of the pressure reservoir. Since the valve mechanism usually operates at a significantly lower control pressure, at least one pressure reducing valve can be arranged between the pressure reservoir and the fluid delivery unit. This pressure reducing valve is in particular configured to reduce the pressure to less than 15 bar.
[0015] A preferred improvement of the present invention provides that the pressure reservoir has a volume between 5 liters and 100 liters, especially between 10 liters and 80 liters.
[0016] Furthermore, the control pipeline system may have a first shut-off valve between the pressure reservoir and the delivery pipeline. In this case, the shut-off valve refers to a valve that can either actively block the fluid flow between the delivery pipeline and the pressure reservoir in both directions by adjustment, or the valve can at least prevent backflow from the pressure reservoir towards the common delivery pipeline according to the type of check valve. It is ensured here that during the operation of the blow molding device, the pressure reservoir is continuously filled by delivering the blow molding fluid until the pressure in the pressure reservoir substantially corresponds to the pressure in the delivery pipeline.
[0017] Within the scope of the present invention, substantial consistency means that the pressure in the pressure reservoir corresponds at least to 90% of the pressure in the delivery pipeline, so that for example, pressure losses within the control pipeline system can be taken into account. In the case of pressure losses in the delivery pipeline, the stored blow molding fluid is then prevented from flowing back from the pressure reservoir into the delivery pipeline by the shut-off valve. For this purpose, either the shut-off valve is actively closed or the corresponding backflow is prevented by being configured as a check valve.
[0018] Preferably, pressure measuring devices are arranged in the delivery pipeline and / or the pressure reservoir. Accordingly, the pressure can be monitored at two positions. For example, it is possible that one pressure measuring device or multiple pressure measuring devices are connected to the control device, where the first shut-off valve is actively closed when the pressure in the pressure reservoir is high enough. This ensures that in the case of pressure losses in the delivery pipeline, no additional operation regarding the pressure reservoir is required. Alternatively, the control device can also be configured to actively close the shut-off valve when a pressure drop is measured by the pressure measuring device in the delivery pipeline.
[0019] An improvement of the present invention further provides that the control pipeline system has a main control pipeline and a secondary control pipeline, where the pressure reservoir is arranged in the secondary control pipeline, and where the main control pipeline connects the valve mechanism to the delivery pipeline while bypassing the pressure reservoir. Accordingly, it is possible to distinguish between production operation and disturbance operation or disinfection operation through the main control pipeline and the secondary control pipeline, where the pressure reservoir is not required during the production operation. Accordingly, in the case of failure of the fluid supply unit, the valve mechanism can still be switched through the secondary control pipeline. Furthermore, it is also possible to switch to the secondary control pipeline during disinfection operation in order to enable the switching of the valve mechanism during the disinfection of the fluid delivery unit.
[0020] Furthermore, it is preferably provided that the second shut-off valve is arranged in the main control line or the changeover valve selectively connects the main control line and the secondary control line to the valve mechanism. Then, the main control line can be shut off accordingly via the second shut-off valve or the changeover valve, such that the supply of the valve mechanism is only effected via the secondary control line and thus via the pressure accumulator. In production operation, it can then be switched back to the main control line again. Preferably, the secondary control line is completely separate from the valve mechanism, thereby preventing the outflow of the stored blow molding fluid. However, instead of the changeover valve, the main control line or the secondary control line can of course also be connected or shut off by two separate valves.
[0021] Regarding the design of the pressure accumulator, in principle, no special provisions need to be followed. However, in this case, it has proven to be particularly effective to be constructed as a pressure tank or an annular line, wherein the annular line is configured to at least sectionally surround the carrier. In this case, the annular line has the advantage that it can be arranged uniformly around the carrier, while the pressure tank is only arranged at one location of the carrier. This is particularly prominent just in this context, namely, that the pressure accumulator can be constructed fixedly relative to the carrier. According to this design, the pressure accumulator is preferably arranged at the carrier, in particular on the carrier, such that the design and arrangement of the pressure accumulator are also important for the mass distribution of the carrier and the components arranged on the carrier. In this case, due to the circumferential distribution, the annular line is preferred. In the design of the pressure accumulator in the form of a pressure tank, in particular, it can be provided that a plurality of pressure tanks are arranged on the carrier in order to be able to achieve a uniform mass distribution.
[0022] A particularly preferred design of the present invention also provides that the fluid delivery section is in fluid connection with the delivery line via a rotary joint, and wherein the control line system is arranged fixedly relative to the carrier. For this purpose, the fluid delivery section is either directly or indirectly connected to the rotary joint, which enables the transfer of the blow molding fluid between the fixed line system and the rotary fluid delivery section. The control line system and thus the main control line and the secondary control line are preferably arranged on the carrier and accordingly rotate together. Correspondingly, the control line system is arranged between the rotary joint and the fluid delivery section.
[0023] A preferred improvement of the present invention also provides that the delivery line has a disinfection fluid connection for connecting a disinfection device at the end opposite to the fluid delivery section. Accordingly, disinfection fluid can be conveyed via this disinfection fluid connection, which flows through and disinfects the delivery line and thus also flows through and disinfects the fluid delivery section. Preferably, a disinfection fluid shut-off valve is provided on the disinfection fluid connection, which is only opened when a disinfection device is connected and the disinfection operation is switched to.
[0024] Preferably, the filtration device is arranged in the conveying line, in particular downstream of the disinfection fluid connection. The filtration device can have one or more filter elements for cleaning the bacteria and particles of the blow molding fluid. The filter element can be correspondingly configured as a particle filter or an activated carbon filter. Therefore, in addition to the fluid conveying section and the conveying line, the filter element also needs to be readjusted or disinfected. This can be achieved, for example, by flowing the disinfection fluid through the filtration device and thus through the filter element.
[0025] In order to first achieve the plastic deformation of the container in a suitable manner completely, the blow molding device can have a heating device which is connected upstream of the at least one blow molding module and in which the container or preform is heated to soften the material, in particular PET.
[0026] Furthermore, the advantage of the present invention lies precisely then not only in the desired introduction of a sterile blow molding fluid, but also in that the container is already sterile during blow molding or is disinfected during the blow molding process. In particular, the blow molding device can have a container disinfection device in which the container is disinfected.
[0027] Preferably, the container disinfection device is arranged in front of the at least one blow molding module along the transport direction of the container. In this case, the container disinfection device can either be arranged in front of the heating device or between the heating device and the at least one blow molding module. Here, the advantage of being arranged in front of the heating device is that in the case of disinfection with the container disinfection fluid, the container disinfection fluid is first introduced into the container disinfection device and then activated in the downstream-connected heating device. The disinfectant is in particular hydrogen peroxide (H2O2), peracetic acid, steam or a mixture thereof. In addition, it is also conceivable that the container disinfection device is integrated into the heating device or the blow molding module, so that the disinfection is carried out correspondingly during heating or during blow molding. In addition, instead of disinfecting with the container disinfection fluid, it is also possible to consider disinfecting the container by radiation, in particular by UV radiation or electron beam disinfection.
[0028] The subject matter of the present invention also lies in a method for operating a blow molding device according to claim 11, wherein during production operation, a blow molding fluid is supplied to the conveying line, the blow molding fluid being used to load the container and to switch the valve mechanism, and wherein a part of the blow molding fluid is temporarily stored, and wherein, during disinfection operation, a disinfection fluid is conveyed to the conveying line, while the valve mechanism is switched by the stored blow molding fluid. The storage of the blow molding fluid takes place in the aforementioned pressure reservoir, and the blow molding fluid arranged in the pressure reservoir is referred to as the stored blow molding fluid. The disinfection fluid is in particular hydrogen peroxide (H2O2), peracetic acid, steam or a mixture thereof.
[0029] Preferably, during the disinfection operation, the valve mechanism is fluid - sealed and separated from the delivery line. This can be done by means of a first shut - off valve. Thereby, it is ensured that only the stored blow - molding fluid enters the valve mechanism for switching.
[0030] A preferred refinement of the invention furthermore provides that the stored blow - molding fluid enables between 200 and 2000 switching cycles. Furthermore, the blow - molding fluid is preferably compressed air or a liquid blow - molding fluid, such as a beverage.
[0031] Furthermore, the blow - molding fluid in the delivery line has a pressure between 20 bar and 50 bar, in particular between 25 bar and 40 bar, wherein the stored blow - molding fluid immediately at the start of the disinfection operation has at least 90% of the pressure corresponding to the pressure in the delivery line. Thereby, it is ensured that a sufficient amount of blow - molding fluid has been stored in the pressure reservoir. Furthermore, possible line losses can also be taken into account.
[0032] Preferably, during the disinfection operation and the production operation, blow - molding fluid for switching, having a pressure between 5 bar and 20 bar, in particular between 8 bar and 12 bar, is delivered to the valve mechanism.
[0033] The blow - molding device is preferably a blow - molding device in which, during the production operation, containers in the form of preforms are delivered and the containers in the form of preforms are deformed into beverage bottles by loading them with blow - molding fluid, and in which the introduction of the blow - molding fluid is controlled by the valve mechanism. Furthermore, stretching of the preforms can also be carried out additionally. For this purpose, a stretching rod is introduced along the container axis before the actual blow - molding in order to achieve axial elongation. This method is also known as stretch blow - molding. BRIEF DESCRIPTION OF THE DRAWINGS
[0034] The present invention will be explained in more detail below with the aid of the drawings. It shows:
[0035] Figure 1 A schematic view of the blow - molding device according to the invention during the production operation;
[0036] Figure 2 A schematic view of the blow - molding device according to the invention during the disinfection operation;
[0037] Figure 3 、 Figure 4 A side - view shows an alternative design of the blow - molding device according to the invention. DETAILED DESCRIPTION OF THE INVENTION
[0038] Figure 1A blow molding apparatus for blow molding a container 1 is shown. In the illustrated example, the container is configured as a plastic preform or preform, and the container is configured as a beverage bottle within the blow molding apparatus. For this purpose, a plurality of blow molding modules 2 are provided, each of the blow molding modules respectively having a container receiving portion 3 and a fluid delivery portion 4 assigned to the container 3. The container receiving portion 3 is in particular a blow mold, which has a blow cavity inside, and the container 1 is pressed against the blow cavity by being loaded with blow molding fluid. Loading with blow molding fluid is achieved through the fluid delivery portion 4, wherein the fluid delivery portion 4 is connected to a common delivery line 7 through a blow molding line 5 and a rotary joint 6. This delivery line 7 is in turn connected to a fluid supply portion 8, via which blow molding fluid in the form of compressed air can be provided. Here, the blow molding fluid in the delivery line 7 generally has a pressure between 20 bar and 45 bar, for example 40 bar.
[0039] In order to be able to control the delivery of the blow molding fluid, a valve mechanism 9 is also provided, which controls the delivery of the blow molding fluid through the fluid delivery portion 4. Thus, for example, in the open state of the blow mold, where there is no container 1 present, no blow molding fluid should flow out through the fluid delivery portion 4. It should be noted here that each valve mechanism 9 can in principle have one or more valve elements, which enable the blow molding fluid to be delivered to the container 1 at different pressure levels.
[0040] Compressed air is also used to control the valve mechanism 9, which is provided by the fluid supply portion 8. A control line system 10 is correspondingly provided, which extracts blow molding fluid via the rotary joint 6, so that not only the fluid delivery portion 4 but also the valve mechanism 9 for switching can be provided with the same blow molding fluid.
[0041] Such a system is generally also referred to as a single-loop guiding system, because not only the valve mechanism 9 but also the fluid delivery portion 4 are connected to the same fluid supply portion 8. However, in this case, the problem is that in the case of disinfecting the fluid delivery portion 4 and the delivery line 7, the disinfectant will enter the valve mechanism 9. The disinfection fluid containing the disinfectant is delivered through a disinfection fluid connection 11, wherein, in Figure 1 's case, there is no connection to the disinfection device 19. Correspondingly, in Figure 1 the disinfection fluid shut-off valve 12 is shown in the closed state.
[0042] In addition, during the production operation shown in Figure 1 , the delivery of the blow molding fluid for switching the valve mechanism 9 is carried out through a main control line 13, which connects the valve mechanism 9 basically directly to the rotary joint 6. Here, only a pressure reducing valve 15 is provided, which reduces the pressure from the delivery line 7 to the required switching pressure. This switching pressure is usually between 5 and 20 bar.
[0043] In addition, according to Figure 1 it has become clear that in addition to the main control line 13, a secondary control line 14 is provided, in which a pressure reservoir 16 is arranged, and in which the blow molding fluid can be conveyed at a pressure substantially corresponding to the pressure of the blow molding fluid in the delivery line 7 by means of a first shut-off valve 17 opened in Figure 1 .
[0044] According to Figure 1 , the pressure reservoir 16 is continuously filled because the changeover valve 18 fluid-tightly separates the secondary control line 14 from the valve mechanism 9 and, for switching purposes, only the blow molding fluid or rather compressed air is conveyed through the main control line 13.
[0045] Figure 2 Fig. shows a blow molding device in disinfection operation according to the invention. The disinfection fluid connection 11 is now connected to the disinfection device 19 and the disinfection fluid valve 12 is opened so that the disinfection fluid can reach the delivery line 7 and thus also the fluid delivery section 4. During disinfection operation, usually no container 1 is arranged in the container receiving section 3.
[0046] During disinfection operation, it is important that the valve mechanism 9 is not loaded with disinfection fluid. Accordingly, the first shut-off valve 17 is closed and the changeover valve 18 is switched to the secondary control line 14. It is now possible thereby to supply the valve mechanism 9 for switching purposes only with the blow molding fluid stored in the pressure reservoir 16, where the pressure reservoir 16 has a volume of at least 5 liters so that a certain quantity of blow molding fluid can be provided to achieve a sufficient number of switching cycles during disinfection operation.
[0047] In addition, it is clear from the illustration in Figure 1 and Figure 2 that the pressure reservoir 16 as well as the control line system 10 are arranged downstream of the rotary joint 6 and are thus rotating components arranged on the carrier 20.
[0048] In Figure 3 a corresponding design is shown. Here, in the sectional view, not only the carrier 20 but also the blow molding module 2 fastened to the carrier 20 are shown. The valve mechanism 9 is arranged above the blow molding module 2 and the blow molding fluid is introduced into the container 1 via the valve mechanism.
[0049] Via the rotary joint 6, the blow molding fluid is conveyed not only to the fluid delivery section 4 through the connecting line 5. In addition, the valve mechanism 9 is connected to the rotary joint 6 via the main control line 13 and the secondary control line 14 and is thus connected to the delivery line 7 not shown in Figure 3 . In addition, two pressure storage tanks 21 are shown on the carrier 20, which together form the pressure reservoir 16.
[0050] Figure 4 In this case, an alternative design is shown, in which the pressure reservoir 16 is shown in the form of an annular pipeline 22.
[0051] List of reference numerals
[0052] 1 Container
[0053] 2 Blow molding module
[0054] 3 Container receiving part
[0055] 4 Fluid conveying part
[0056] 5 Blow molding pipeline
[0057] 6 Rotary joint
[0058] 7 Conveying pipeline
[0059] 8 Fluid supply part
[0060] 9 Valve mechanism
[0061] 10 Control pipeline system
[0062] 11 Disinfection fluid connector
[0063] 12 Disinfection fluid stop valve
[0064] 13 Main control pipeline
[0065] 14 Sub-control pipeline
[0066] 15 Pressure reducing valve
[0067] 16 Pressure reservoir
[0068] 17 Stop valve
[0069] 18 Directional valve
[0070] 19 Disinfection device
[0071] 20 Carrier
[0072] 21 Pressure storage tank
[0073] 22 Annular pipeline
Claims
1. A blow molding device for blow molding containers (1), in particular beverage containers, the blow molding device having a rotatably arranged carrier (20) and a plurality of blow molding modules (2) arranged on the carrier (20), each of the blow molding modules respectively having a container receiving part (3) and a fluid delivery part (4) assigned to the container receiving part (3) for introducing a blow molding fluid into the container (1), wherein, The fluid delivery section (4) is connected to a common delivery line (7) via a valve mechanism (9) respectively, each said valve mechanism being used to control the delivery of the blow molding fluid into the container (1), and wherein the valve mechanism (9) is connected to the delivery line (7) via a control line system (10) for switching, characterized in that the control line system (10) has a pressure reservoir (16).
2. The blow molding device according to claim 1, wherein The pressure reservoir (16) has a volume between 5 liters and 100 liters, especially between 10 liters and 80 liters.
3. The blow molding device according to any one of the preceding claims, characterized in that, The control line system (10) has a first shut-off valve (17) between the pressure reservoir (16) and the delivery line (7).
4. The blow molding device according to any one of the preceding claims, characterized in that, The control line system (10) has a main control line (13) and a secondary control line (14), wherein the pressure reservoir (16) is arranged in the secondary control line (14), and wherein the main control line (13) connects each said valve mechanism (9) to the delivery line (7) bypassing the pressure reservoir (16).
5. The blow molding device according to claim 4, characterized in that, A second shut-off valve (17) is arranged in the main control line (13), or a changeover valve (18) selectively connects the main control line (13) and the secondary control line (14) to the valve mechanism (9).
6. The blow molding device according to any one of the preceding claims, characterized in that, The pressure reservoir (16) is configured as a pressure storage tank (21) or an annular line (22), and the annular line at least sectionally surrounds the carrier (20).
7. The blow molding device according to any one of the preceding claims, characterized in that, The pressure reservoir (16) is fixedly configured relative to the carrier (20).
8. The blow molding device according to any one of the preceding claims, characterized in that Each said fluid delivery section (4) is in fluid connection with the delivery line (7) via a rotary joint (6), and wherein the control line system (10) is fixedly arranged relative to the carrier (20).
9. The blow molding device according to any one of the preceding claims, characterized in that, The delivery line (7) has a disinfection fluid connection (11) for connecting a disinfection device (19) at the end opposite to the fluid delivery section (4).
10. The blow molding device according to any one of the preceding claims, characterized in that, A filtering device is arranged in the delivery line (7), especially downstream of the disinfection fluid connection (11).
11. A method for operating a blow molding device according to any one of the preceding claims, wherein, During production operation, the blow molding fluid is delivered to the delivery line (7), the blow molding fluid being used to load the container (1) and to switch each said valve mechanism (9), and wherein a part of the blow molding fluid is temporarily stored, and wherein, during disinfection operation, the disinfection fluid is delivered to the delivery line (7), and the valve mechanism (9) is switched by the stored blow molding fluid.
12. The method according to claim 11, wherein, During disinfection operation, each said valve mechanism (9) is fluid-tightly separated from the delivery line (7).
13. The method according to claim 11 or 12, wherein, The stored blow molding fluid enables 200 to 2000 switching cycles.
14. The method according to any one of claims 11 to 13, wherein, The blow molding fluid is compressed air.
15. The method according to any one of claims 11 to 14, wherein, The blow molding fluid in the delivery line (7) has a pressure between 25 bar and 40 bar, and wherein the stored blow molding fluid immediately has at least 90% of the pressure corresponding to the pressure in the delivery line (7) at the start of the disinfection operation.
16. The method according to any one of claims 11 to 15, wherein During disinfection operation and during production operation, a blow molding fluid for switching, having a pressure between 5 bar and 20 bar, is supplied to each of the valve mechanisms (9).
17. The method according to any one of claims 11 to 16, wherein During the production operation, a container (1) in the form of a preform is supplied to a container handling device, and the container in the form of a preform is deformed and shaped into a beverage bottle by loading the blow molding fluid, and wherein the introduction of the blow molding fluid is controlled by each of the valve mechanisms (9).