WO2024089146A1 - Fülleinrichtung - Google Patents
Fülleinrichtung Download PDFInfo
- Publication number
- WO2024089146A1 WO2024089146A1 PCT/EP2023/079875 EP2023079875W WO2024089146A1 WO 2024089146 A1 WO2024089146 A1 WO 2024089146A1 EP 2023079875 W EP2023079875 W EP 2023079875W WO 2024089146 A1 WO2024089146 A1 WO 2024089146A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filling
- closure
- channel
- side wall
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0457—Packings
- F16K5/0464—Packings in the housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B39/00—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
- B65B39/001—Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves
- B65B39/003—Rotating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/406—Sealings between relatively-moving surfaces by means of fluid by at least one pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/003—Spindle sealings by fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0457—Packings
- F16K5/0478—Packings on the plug
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/04—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having cylindrical surfaces; Packings therefor
- F16K5/0457—Packings
- F16K5/0485—Spindle sealing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
- B65B1/18—Methods of, or means for, filling the material into the containers or receptacles for filling valve-bags
Definitions
- the present invention relates to a filling device for a packaging machine for the preferably automatic filling of bulk goods into containers, comprising at least one housing and at least one filling channel formed therein and at least one controllable channel closure in order to control the filling of bulk goods into containers.
- the channel closure comprises at least one pivotable closure member which, in the assembled state, is accommodated in a closure receptacle in the housing, wherein the closure receptacle extends in a transverse direction to the filling channel through the filling channel and at least in sections through the housing.
- a drive shaft is provided on the closure member which extends outwards from the housing on a drive side of the housing and via which the closure member can be pivoted in a controlled manner in order to close the filling channel in a closed position and to release it essentially completely at least in a central region in an open position.
- the closure member comprises at least one side wall and at least one closure element, wherein the side wall is arranged in the closure receptacle in the housing outside the region of the filling channel and wherein the closure element is arranged at least in sections within the closure receptacle in the region of the filling channel.
- the channel closure In known filling devices, the channel closure is often moved into two or three different positions in order to release the filling channel to a different extent. If the channel closure is opened wide and the cross-section of the filling channel is largely released, filling takes place in a coarse flow, in which a high filling weight is filled per unit of time.
- the filling rate is reduced towards the end of the filling process and then only a fine flow of filling is carried out.
- the cross-section of the filling channel is significantly reduced by the controllable channel closure.
- Such filling devices are known, for example, from DE 10 2011 119 624 Al and DE 10 2016 119 191 Al.
- the filling device according to the invention is intended for use on or in a packaging machine for the preferably automatic filling of bulk goods into containers.
- the filling device according to the invention comprises at least one housing and at least one filling channel formed therein and a controllable channel closure in order to control the filling of bulk goods into containers.
- the channel closure comprises at least one pivotable closure element which, in the assembled state, is accommodated in a closure receptacle in the housing, wherein the closure receptacle extends in a transverse direction to the filling channel through the filling channel and at least in sections through the housing.
- At least one drive shaft is provided on the closure element, which extends outwards from the housing on a drive side of the housing and via which the closure element can be pivoted in a controlled manner in order to close the filling channel in a closed position and to essentially completely open it in an open position at least in a central area.
- the closure member comprises at least one side wall and at least one closure element, wherein the side wall is arranged in the closure receptacle in the housing outside the area of the filling channel and wherein the closure element is arranged at least in sections within the closure receptacle in the area of the filling channel.
- at least one circumferential sealing device is assigned to the side wall in order to effect a seal between the side wall and the closure receptacle and at least one seal is assigned to the closure element transversely to the filling channel.
- At least one side wall is provided, in particular on the shaft side, on which the closure element is accommodated.
- a side wall can also be provided to the left and right of the filling channel, between which the closure element extends through the closure receptacle.
- the closure receptacle has in particular a round cross-section, which, as previously stated, is provided transversely to the filling channel.
- a rotatable channel closure is provided, which can also be referred to as a so-called rotary slide valve.
- sealing device is provided all around means in particular that a round side wall adapted to a round closure receptacle is assigned a circumferential sealing device over the circumference.
- the sealing device is assigned to the side wall all the way around, which means in particular that the sealing device can be provided either on the side wall and/or on the closure receptacle.
- At least one seal is assigned to the closure element transversely to the filling channel.
- An even better seal can be achieved by means of such a seal transversely to the filling channel and product is preferably stripped off the walls of the closure receptacle when the closure element is rotated.
- the fact that the at least one seal transversely to the filling channel is assigned to the closure element means in particular that the seal is assigned to the housing or the closure receptacle and/or the closure element or is provided thereon.
- the closure element can preferably also assume intermediate positions in order to limit the free cross-section of the filling channel. For example, filling can be done in the coarse flow in the open position and in the fine flow in an intermediate position.
- the filling device according to the invention offers many advantages.
- a significant advantage is that the product from the filling channel cannot easily penetrate through the filling channel between the closure receptacle and the closure member.
- a wall of the housing has an insertion opening for the closure member, in order to be able to insert the closure member into the closure receptacle through the insertion opening during assembly.
- the insertion opening is formed in the shaft-side wall of the housing.
- At least two side walls are provided, with each side wall being assigned at least one circumferential seal in order to create a seal between the side walls and the closure receptacle.
- a shaft-side side wall is provided, which is guided in particular in the housing or in the closure receptacle, and in addition, in particular, an opposite side wall is provided, which in expedient embodiments is accommodated or guided in a corresponding recess or in the bolt receptacle in the opposite housing wall.
- the seal associated with the closure element extends at least over the entire cross-section of the filling channel.
- the seal associated with the closure element extends from a side seal or a seal in or on one side wall to the seal in the other side wall. If only one seal is provided in one side wall, the sealing device of the closure element extends to this seal. This ensures that a closed seal is formed between the circumferential seal(s) and the seal on the closure element transverse to the filling channel.
- the sealing device associated with the side wall is formed in one piece with the sealing device associated with the closure element. In this way, a particularly effective and secure seal can be achieved. If two side walls are provided, it is also preferred here that the seals or circumferential seals associated with the side walls are formed in one piece with the sealing device of the closure element running transversely thereto.
- At least one sealing device is accommodated in at least one groove in the housing or the closure receptacle.
- the sealing devices or the sealing device are then designed in particular such that they protrude beyond the groove at least in sections.
- At least one sealing device is arranged in at least one groove in the closure member
- grooves or a one-piece groove are preferably provided in at least one side wall or, in the case of two side walls, in the side walls and/or transversely thereto in the closure element.
- the sealing device is designed in such a way that it protrudes beyond the groove at least in sections.
- the sealing device preferably comprises at least one flexible material.
- the sealing device can in particular consist of a flexible material.
- a flexible material is in particular a compressible, expanded and/or compactable material.
- At least one sealing device consists of felt.
- the sealing device as a whole can preferably consist entirely of felt and/or at least comprise felt in sections.
- another suitable flexible and sealing material can also be used.
- the present invention also relates to a filling device as described above, wherein instead of the at least one circumferential sealing device on the side wall and/or in addition thereto, at least one side wall comprises at least one product discharge device. If there is only one side wall, at least one such product discharge device is provided, in particular on the shaft-side side wall. If two side walls are provided, a product discharge device is preferably provided on both side walls, whereby even with two side walls, depending on the design, a product discharge device can advantageously be used only on the shaft-side side wall.
- Such a product discharge device offers an alternative to the circumferential sealing device and/or in combination with the
- the all-round sealing device has the advantage of a particularly good seal. In particular, it provides a good seal against the drive shaft and the drive shaft bearings.
- the product discharge device is arranged downstream of the sealing device, starting from the filling channel.
- the product discharge device is arranged further out or in the direction of the shaft or in the direction of the free side. Because the product discharge device is arranged downstream of a sealing device starting from the filling channel, the remaining product which reaches this area despite the sealing device is discharged via the product discharge device.
- the product discharge device preferably comprises at least one groove in the at least one side wall. If two side walls are provided, as already explained above, such a product discharge device or groove can only be provided in the shaft-side side wall. Depending on the design, however, product discharge devices with at least one groove each can also be provided in both side walls.
- the groove is provided all the way around. This means that product coming from the filling channel through the closure holder can penetrate over the entire circumference of the closure holder into the circumferential groove in the side wall or the side walls and be drained away.
- at least one outlet is assigned to the groove.
- such an outlet is arranged at the very bottom or at least in sections in a lower area, so that the product is conveyed or falls downwards through the groove by the rotation of the closure member and preferably by gravity and can be passively and/or actively discharged from an outlet.
- the product discharge device comprises at least one cleaning element.
- a cleaning element is particularly advantageous if there is a fear that the product in the groove of the product discharge device will compact and the groove will become clogged over time. The cleaning element then ensures that the groove remains permanently clear.
- the cleaning element can be filled in expedient embodiments in particular as a scraper and/or a mandrel, which protrudes at least partially into the groove. Due to the rotation of the closure member or the side walls and thus the rotation of the groove, the scraper or mandrel and/or the like preferably continuously clears the groove.
- Fig. 1 is a purely schematic representation of a packing system in a plan view
- Fig. 2 is a purely schematic representation of an embodiment of a filling module with a filling device according to the invention in a perspective view;
- Fig. 3 is a purely schematic representation of an embodiment of a filling module with a filling device according to the invention in a sectional view from the side;
- Fig. 4 is a purely schematic sectional view of the embodiment of the filling module according to Figure 3 with the closure element in a different position;
- Fig. 5 is a purely schematic representation of an embodiment of a filling device according to the invention in a sectional view
- Fig. 6 is a purely schematic representation of an embodiment of a filling device according to the invention in a perspective view
- Fig. 7 is a purely schematic representation of a closure member of an embodiment of a filling device according to the invention.
- Fig. 8 is a purely schematic representation of the closure member according to Figure 7 with the sealing device inserted;
- Fig. 9 is a purely schematic representation of a further embodiment of a filling device according to the invention in a sectional view.
- Figure 1 shows a purely schematic plan view of a packing system 100 for filling bulk goods into containers or bags 200.
- the packing system 100 is designed here as a rotating packing system 100 with several filling modules 101, which each have a filling nozzle 105 directed radially outwards.
- An empty bag 200 can then be placed or shot onto a filling nozzle 105 and filled during the rotation of the packing system 100.
- so-called valve bags can be used here.
- an automatic bag plug 300 is provided in the embodiment shown here, which takes empty bags from a magazine in the embodiment shown into a firing channel and shoots them onto a free filling nozzle 105 when it passes through the firing channel.
- the bag 200 attached to a filling nozzle 105 is filled and, after one revolution of the packing system 100, is transferred to a bag removal device 400.
- Figure 2 shows a purely schematic perspective view of a filling module 101 which, in the embodiment shown, comprises a filling pot 102 with a conveying element 104 designed as a conveying turbine 103 and a filling device 1 according to the invention.
- the filling device 1 comprises a channel closure 4 with a closure member 6 for a filling channel 3, wherein the channel closure 4 or the closure member 6 in the embodiment shown is designed as a so-called rotary slide valve 28.
- the filling channel 3 can be opened or closed and/or narrowed at least in a central region 12, depending on the position of the closure element 15 of the closure member 6.
- a drive 29 is provided in the embodiment shown here, which is connected to the Drive shaft 8 of the channel closure 4 is connected or is in operative connection.
- Figures 3 and 4 show an embodiment of a filling module 101 with a filling device 1 according to the invention in a purely schematic sectional view.
- the filling pot 102 with the conveyor turbine 103 can be seen, by means of which bulk material is conveyed into the filling channel 3 and then into a filling nozzle 105 connected or connectable thereto when a bag 200 to be filled is attached to it.
- the filling device 1 comprises a housing 2, by means of which the filling device 1 is arranged or accommodated on the filling pot 102. Depending on the design, the filling device 1 can also be formed in one piece with the filling pot 102.
- closure element 15 of the closure member 6 can be seen, which is accommodated in the closure receptacle 5 in the housing 2.
- Figure 4 shows that the channel closure 4 or the closure member 6 or the closure element 15 has been rotated in such a way that the closure element 15 completely exposes the filling channel 3 in the view shown here. In this position, the closure member 6 is in the open position 11.
- the filled quantity or the filled volume can be controlled in a targeted manner, whereby the filling rate is reduced towards the end of the filling process and then only the fine flow is filled.
- the cross-section of the filling channel can also be significantly reduced in intermediate positions by the controllable channel closure. When the filled quantity or the desired filling volume is reached, the channel closure is closed completely so that the filling process is stopped.
- Figure 5 shows a filling device 1 according to the invention in a purely schematic side sectional view.
- the filling device 1 comprises a housing 2 which has a filling channel 3 formed therein, wherein a closure receptacle 5 for a channel closure 4 is provided in the housing 2.
- the channel closure 4 comprises a closure member 6, which in the embodiment shown here has two side walls 13, 14, between which a closure element 15 is arranged.
- a closure member 6 which in the embodiment shown here has two side walls 13, 14, between which a closure element 15 is arranged.
- only one side wall 13 can be provided, which forms an L-shaped component with the closure element.
- the one side wall 13 is then the shaft-side wall in operative connection to the drive shaft 8.
- the closure receptacle 5 is adapted to the contour of the closure member 6 adapted and is round here.
- the closure receptacle 5 is designed in the transverse direction 7 to the filling channel 3 to the conveying direction of the filling channel 3, so that the closure member 5 is inserted or arranged in the housing 2 transversely to the conveying direction of the bulk material or transversely to the filling channel 3.
- the closure member 6 is connected on a drive side 9 to a drive shaft 8, by means of which the closure member 6 can be moved or rotated in the closure receptacle 5.
- the closure member 6 can be displaced or rotated in particular between a closed position 10 and an open position 11, so that in a closed position 10 the filling channel 3 is essentially completely or even completely closed by the closure member 6 or the closure element 15.
- the closure element 15 is rotated such that the filling channel 3 is released.
- sealing devices 16 are provided in the embodiment shown here, which are arranged here in grooves 21 in the housing 2.
- the sealing devices 16 are provided all the way around the closure receptacle 5.
- the product discharge device assigned to the shaft-side side wall 13 can also be provided to discharge purge air penetrating into the housing 2 or into the closure receptacle 5, for example if the shaft sealing rings 33 are leaky. In this way, the penetrating purge air does not reach the filling channel 3. In this way, the conveyed product is prevented from becoming enriched with air in an uncontrolled manner, which changes the flow properties of the product and in particular extends the venting time of the bag before removal from the nozzle.
- FIG. 6 shows a purely schematic perspective sectional view of a filling device 1 according to the invention.
- a section of the housing 2 is not shown in order to provide a view into the interior of the housing 2 with a closure member 6 4 inserted into the closure receptacle 5.
- a sealing device 16, 19 is provided in the grooves 21, which is provided all the way around the side walls 13, 14.
- a sealing device 19 is also provided transversely thereto over the closure member 15, which extends at least over the cross section 20 of the filling channel 3.
- the sealing devices 16, 19 are designed as one piece.
- the sealing devices 16, 19 are made of a flexible material 22, with felt being provided here in order to achieve the best possible seal and yet allow the sealing device 16, 19 to give way.
- FIGs 7 and 8 show a purely schematic alternative embodiment of a closure member 6 according to the invention.
- the sealing devices 16, 19 are not provided in a groove 21 in the housing 2, but the sealing devices 16 and 19 are inserted into grooves 21 in the side walls 13, 14 and in the closure element 15. The closure member 6 is then pushed together with the sealing devices 16, 19 into the closure receptacle 5.
- Figure 9 shows a further embodiment of a channel closure 4 according to the invention.
- the housing 2 is not directly connected to the bearing 30 of the drive shaft 8, so that despite the sealing devices 16, 19, product emerging from the filling channel can practically not reach the roller bearings 31 for the shaft 8 and thus cannot damage them.
- the product discharge device 24 in all embodiments can comprise at least one cleaning element 27, which is designed here as a mandrel 32 or as a scraper 32.
- the cleaning element can be arranged anywhere along the groove 25 and engages in the groove 25 to free it of stuck product. This is particularly advantageous when filling a product that could compact in the groove and thus clog the groove 25 over time.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23805879.6A EP4608724A1 (de) | 2022-10-28 | 2023-10-26 | Fülleinrichtung |
| CN202380080920.6A CN120187638A (zh) | 2022-10-28 | 2023-10-26 | 灌装装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022128611.8 | 2022-10-28 | ||
| DE102022128611.8A DE102022128611A1 (de) | 2022-10-28 | 2022-10-28 | Fülleinrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024089146A1 true WO2024089146A1 (de) | 2024-05-02 |
Family
ID=88833950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/079875 Ceased WO2024089146A1 (de) | 2022-10-28 | 2023-10-26 | Fülleinrichtung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4608724A1 (de) |
| CN (1) | CN120187638A (de) |
| DE (1) | DE102022128611A1 (de) |
| WO (1) | WO2024089146A1 (de) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4210973A1 (de) * | 1992-04-02 | 1993-10-07 | Cerpraecis Anwendungen Fuer In | Absperrorgan für ein fluides Medium |
| DE102011119624A1 (de) | 2011-11-29 | 2013-05-29 | Haver & Boecker Ohg | Fülleinrichtung für eine Packmaschine |
| DE102016119191A1 (de) | 2016-10-10 | 2018-04-12 | Haver & Boecker Ohg | Fülleinrichtung für eine Packmaschine zum Füllen von Schüttgütern in Gebinde |
| CN108843809A (zh) * | 2018-08-23 | 2018-11-20 | 合肥合茂电子科技有限公司 | 一种高密封旋转换向阀 |
-
2022
- 2022-10-28 DE DE102022128611.8A patent/DE102022128611A1/de active Pending
-
2023
- 2023-10-26 EP EP23805879.6A patent/EP4608724A1/de active Pending
- 2023-10-26 CN CN202380080920.6A patent/CN120187638A/zh active Pending
- 2023-10-26 WO PCT/EP2023/079875 patent/WO2024089146A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4210973A1 (de) * | 1992-04-02 | 1993-10-07 | Cerpraecis Anwendungen Fuer In | Absperrorgan für ein fluides Medium |
| DE102011119624A1 (de) | 2011-11-29 | 2013-05-29 | Haver & Boecker Ohg | Fülleinrichtung für eine Packmaschine |
| DE102016119191A1 (de) | 2016-10-10 | 2018-04-12 | Haver & Boecker Ohg | Fülleinrichtung für eine Packmaschine zum Füllen von Schüttgütern in Gebinde |
| EP3523201B1 (de) * | 2016-10-10 | 2021-09-08 | Haver & Boecker OHG | Fülleinrichtung für eine packmaschine zum füllen von schüttgütern in gebinde |
| CN108843809A (zh) * | 2018-08-23 | 2018-11-20 | 合肥合茂电子科技有限公司 | 一种高密封旋转换向阀 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4608724A1 (de) | 2025-09-03 |
| CN120187638A (zh) | 2025-06-20 |
| DE102022128611A1 (de) | 2024-05-08 |
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