Method for emptying a container bag

Abstract

Device for emptying a container bag (4) or an emptied tubular container bag (4) from a device (39) for filling with bulk material.The object of the invention is achieved by the following features: a) the device has a housing (8) for receiving bulk material, which can be transferred into the container bag (4) and, after use or emptying of the bulk material, disposed of via an outlet opening or an outlet nozzle (6) having an outlet opening; b) the outlet nozzle (6) is connected to the housing (8); c) an opening is provided between the outlet nozzle (6) and the housing (8); d) a film tube (7) is laid on the outer circumference of the housing wall of a nozzle closure (22), the end of which is led around the housing wall and placed against an inner wall (41) of the housing wall and sealed by means of a closure (11); e) a housing part or a nozzle closure (22) can be inserted into the inlet nozzle (6) and with the help of which the film tube (7) and / or the inlet nozzle (6) can be additionally sealed.The device according to the invention achieves a very simple and quick way to dispose of the container used in the device after the transfer process into another container with as little contamination as possible and without the need for auxiliary materials, since the operator can use a foil tube provided for this purpose.

Description

[0001] EP 2 168 881 A2 already discloses a method for the low-contamination transfer of contents from a first container into a second container. The first container has a casing that opens into an outlet provided with a first closure. A flexible extension extends beyond the first closure as a continuation of the casing. A filling device having a tube is arranged between the first container and the second container. The tube is designed for the flow of contents during transfer from the first container into the second container and, on its outer circumference, for storing a film in the form of an endless liner.A characteristic of the method is that a second sealing point is formed from an arrangement comprising an activated secondary seal, a flexible extension of the film extending over the outer circumference of the secondary seal, a flexible extension of the casing extending externally over the flexible extension of the film in the area of the secondary seal, and a first tensioning element applied externally over the flexible extension in the area of the secondary seal. Furthermore, a device for carrying out the method is proposed.

[0002] Furthermore, a method is known from WO 2005 / 056443 A1, which relates to the contamination-preventing emptying of bulk material from a container with a flexible outlet into a downstream device via a connecting pipe, wherein the method comprises the following method steps: arranging the container with the outlet tied at a tying point above the connecting pipe, arranging a tubular film around the connecting pipe such that it lies sealingly against the inlet-side edge of the connecting pipe, tying the tubular film above the connecting pipe such that a funnel-shaped, expandable end of the tubular film remains above the tying point, clamping the outlet of the flexible container and the tubular film such that free tubular film remains above the clamped connection, loosening the tying points of the outlet and tubular film and emptying the bulk material,Gathering the free end of the tubular film remaining above the clamping point against the container outlet and securing it there, pulling more tubular film from a tubular film supply until clean tubular film is available above the connecting pipe, sealing the tubular film at two adjacent sealing points in the clean area, cutting the tubular film between the two sealing points, pulling more tubular film from the tubular film supply and tying it again at a tying point at a distance from the cutting point, removing the sealing point in the area of the cutting point and spreading the tubular film between the cutting point and the tying point at a distance from the cutting point into a funnel shape.

[0003] Also already known from [EP 3041749 B1] is a device for transferring process material between a first container (A) and a second container (B), comprising: a) at least one clamping unit having a first clamp and a second clamp that can be operated independently of one another; wherein: b) the at least one clamping unit is intended to temporarily fix in a sealed manner: c) only one end section of a tubular liner piece facing the respective clamping unit, which extends indirectly between the containers (A, B) in order to seal the transition between the containers (A, B) to the outside; c) only one end section of a tubular liner remnant originating from a previous transfer process, which is closed at the other end with a first crimp, - where "crimping" at the binding point means closing a special type of film tube;and bc) one end section of the liner piece simultaneously with one end section of the liner residue originating from a previous transfer process; and c) both clamps of the respective clamping unit are intended to temporarily jointly fix the facing end section of the liner piece or jointly fix the facing end section of the liner residue originating from a previous transfer process in a sealed manner; characterized in that d) both clamps of the respective clamping unit are arranged circularly and concentrically to one another in relation to the longitudinal extent of the liner piece.

[0004] Furthermore, a device (DE 1 2019 110 413 B3) for emptying bulk material from a container (25) into a tubular container bag (4) is known, which is received in a receiving part or collecting housing (9) and whose upper end can be closed after the transfer process, while the second or lower end of the container bag (4) can be closed with the aid of at least three sealing rings (1, 2, 3) arranged coaxially with respect to a central axis of the collecting housing (9) in such a way that in particular even very small particles are not released outwards into the ambient air.The individual pressurizable sealing rings (1, 2, 3) are each arranged offset to one another and the upper or first sealing ring (1) seen in the filling direction is in contact with a cover or annular flange (5) and the middle or second sealing ring (2) is in contact with a nozzle or connecting part (14) for the collecting housing (9) and the third, offset sealing ring (3) located underneath is in contact with the cover or annular flange (5), wherein the tubular part of the container bag (4) is inserted between one side of the third or lower sealing ring (3) and the opposite wall of the receiving part or collecting housing (9), then around a first web (29) and an adjacent groove (28) and finally between a wall part (48) of the nozzle or connecting part (14) or the wall of the collecting housing (9) of the nozzle (14) or connecting part for the collecting housing and the first provided in the cover or annular flange (5). Sealing ring (1) is guided.

[0005] Although this allows for proper emptying of the bulk material, it does not allow filling or transferring from one container to another, as this would result in dust particles accumulating in the individual spaces, which would contribute to dust particles being released into the ambient air.

[0006] The invention is based on the object of designing the device for disposing of a container or unused container in such a way that no or almost no particles can enter the ambient air and contaminate it.

[0007] The object is achieved according to the invention by the following features: a) the device has a housing for receiving loose material which can be transferred into the container bag and, after use or emptying of the loose material, disposed of via an outlet opening or an outlet nozzle having an outlet opening; b) the outlet nozzle is connected to the housing; c) an opening is provided between the outlet nozzle and the housing; d) a film tube is placed on the outer circumference of the housing wall of a nozzle closure, the end of which is guided around the housing wall and placed against an inner wall of the housing wall and sealed by means of a closure; e) a housing part can be inserted into the inlet nozzle and with the aid of which the film tube and / or the inlet nozzle can be additionally sealed.The device according to the invention enables the container used in the device to be disposed of in a very simple and quick manner after the transfer process into another container, with as little contamination as possible and without the need for any aids, since the operator can use a film tube provided for this purpose. f) the nozzle closure (22) is adapted with its outer circumference to the inner circumference of the outlet nozzle (6) and has openings at both its ends which can be closed by means of a cover (25, 25').

[0008] According to the invention, the outer circumference of the nozzle closure is adapted to the inner circumference of the outlet nozzle, and the nozzle closure has openings at both ends, each of which is closed by a cover. This allows for easy sealing of the outlet nozzle and the film tube inserted into it.

[0009] Furthermore, it is advantageous that the two covers can be pressed against the two opposite openings of the nozzle closure using a pressure device, sealing the interior of the nozzle closure. This achieves optimal, cost-effective sealing of the nozzle closure.

[0010] For this purpose, it is advantageous that the pressing device is designed as a rod or threaded rod, which is firmly connected to the first cover at one end, extends with its other end through an opening provided in the second cover and has a screw nut screwed onto the rod, with the aid of which the two covers can be pressed against the two ends of a cylindrical housing wall of the nozzle closure.

[0011] It is also advantageous for the housing wall of the nozzle closure to have one or more openings through which compressed air is directed against a cylindrical ring seal or fifth seal, pressing it against the inside of the outlet nozzle and sealing it from the outside when inserted into the interior of the outlet nozzle. With the help of the compressed air, the required seal can be activated and optimal sealing of the device can be achieved.

[0012] For this purpose, it is advantageous that the cylindrical ring seal or fifth seal rests on the outside of the housing wall and is guided around the ends of the housing wall, rests against the housing wall over a certain area and the ends of the housing wall are each pressed against a seal or annular and / or plate-shaped seal resting on the cover with the aid of the pressing device.

[0013] It is also advantageous that the first emptied container bag is discharged via the outlet nozzle located on the side of the housing to be removed and a second container bag connected to the movable ring body is connected to the collecting housing and has a closure to be closed and refilled, so that the bulk material can be transferred from the new or second container into a third container bag which is closed by means of a further or the first or upper and a second or lower closure to be closed. The disposal process of the emptied container bag can thus be carried out cost-effectively and with little effort.

[0014] Further advantages and details of the invention are explained in the claims and in the description and shown in the figures.

[0015] Showing: Fig. 1a a tubular or deformable filler neck, which is tied off with a closure and severed below the tying point; Fig. 1b a perspective view of the entire device; Fig. 2 a fourth fifth seal, which are activated to seal the film tube so that as little dust as possible can get into the film tube; Fig. 3 the outer or first seal and the inner or third seal are relieved and the lid is lowered to the lowest position P3, wherein the ends of the tubular filler neck are fixed with adhesive strips (26) and the middle or second seal 2 is still activated; Fig. 4 the tubular filler neck is still held and sealed in the middle or second seal, wherein new tubular filler necks are pulled onto the lid; Fig.5the lid is raised to the middle position P2 and the outer or first seal is activated, the middle or second seal remaining activated and thereby holding the first tubular filler neck; Fig. 6athe lid is raised to the middle position P2 and the outer or first seal is activated, the middle or second seal remaining activated and thereby holding the first tubular filler neck; Fig. 6bdetail of . Fig. 6a, with the seals shown enlarged; Fig. 7a an enlarged view of the nozzle closure; Fig. 7b the fourth and fifth seals are relieved, with the nozzle closure being removed from the outlet nozzle; Fig. 7c a and b partial views of the nozzle closure; Fig. 7d a perspective view of the nozzle closure; Fig. 8 an operator reaches into the outlet nozzle with his hand and is protected from contamination by the film tube; during this action he grasps the tubular filler nozzle in order to pull it into the film tube; Fig. 9 the tubular filler nozzle is pulled outwards through the outlet nozzle in the film tube; Fig.10The film tube is tied off with the previous tubular filler neck contained therein using two closures, with the end of the film tube with the previous tubular filler neck enclosed therein being subsequently severed between these two closures; Fig. 11aThe neck closure is reinserted into the outlet neck, the neck closure seals are actuated, and the lid is raised to the uppermost position P1, with the outer seal being subjected to the required pressure so that the tubular filler neck is tightly connected and at the same time allows the lid to be lifted. Fig. 11bThe web of the lid presses the tubular filler neck circumferentially into the groove of the central seal, with the central seal and the inner seal not being activated; Fig.12a The lid is lowered to the middle position P2, whereby the outer seal is subjected to the required pressure so that the tubular filler neck is sealed and at the same time allows the lid to be lifted; Fig. 12b The web of the fourth lid is pulled out of the groove of the middle or second seal and the second seal is simultaneously activated with a defined pressure. As soon as the lid has reached the middle position P2, the middle seal is supplied with full pressure, whereby the outer seal 1 and the inner seal are also activated with full pressure; Fig. 13 The tubular filler neck is tied on and the container bag is filled, whereby all seals 1, 2 and 3 are activated with full pressure; Fig. 14a The tubular filler neck is tied off with two closures after the container bag has been filled; Fig.14bThe tubular filler neck between these closures is then severed, with all seals 1, 2 and 3 activated at full pressure. This corresponds to the initial situation described, and the next emptying process can take place using the same procedure; Fig. 15aFor each filling process, a section of the film tube is used up, with the film tube being folded axially so that it reaches a length of several meters, meaning the consumption could be, for example, 0.4 m per filling, and the total length of the film tube is 15 m; Fig. 15bThe film tube is clamped in the circumferential groove and sealed. This is achieved by the movable ring being pressed against the seal, with the clamping of the film tube being based on consumables such as, for example,An O-ring is omitted for fastening and sealing the film tube, and the contact pressure of the movable ring can be driven by different drives - generated with or without auxiliary energy - mechanically, magnetically, pneumatically, or electrically; Fig. 16. With each filling, some of the film tube 7 is used up. In order to pull a new film tube 7 over the existing one, the seals 10 and 12 are relieved and the nozzle closure 22 and the housing 35 are removed; Fig. 17. The ends of the film tube are folded forward; Fig. 18. A new film tube is pulled over the remainder of the film tube and pulled onto the nozzle shoulder, with the end of the new film tube being closed with a closure; Fig. 19. The new film tube is fixed and sealed on the nozzle shoulder with the clamping element; Fig. 19. Clamping element; Fig.Fig. 20 shows that the operator has reached into the outlet nozzle 6 with his hand and, in doing so, pulls the film tube 7' located in the outlet nozzle and the remainder of the previous film tube 7 into the new film tube 7' without causing any contamination; Fig. 21 shows that the film tube 7' with the previous film tube 7 contained therein can be pulled outwards. The film tube 7' is tied off using two closures 11'. The film tube 7' to be removed is severed between these two closures 11' and removed with the inner film tube 7. Fig.22a Here, the new film tube 7' is pressed into the circumferential groove 36 of the clamping element using an aid such as a rope or a template and held in place with a pressing device 38. The film tube 7' is then pressed with the movable ring against the seal, thus fixing and sealing it, and the end of the film tube 7' is then reinserted into the outlet nozzle; Fig. 22b shows a first embodiment of a clamping and sealing device, wherein the movable ring clamps the film tube against the seal 13; Fig. 22c shows that the magnets generate the lifting movement of the movable ring when the threaded nut on the threaded spindle is loosened; Fig. 22d Here, the pneumatic or electric cylinder generates the lifting movement of the movable ring 33; Fig. 22e shows the rack and pinion gear that generates the lifting movement of the movable ring; Fig. 22f The toggle lever clamp generates the lifting movement of the movable ring; Fig.22g the eccentric generates the lifting movement of the movable ring; Fig. 22h the threaded spindle generates the lifting movement of the movable ring; Fig. 22i the pneumatic seal generates the lifting movement of the movable ring, Fig. 23 the new film tube is installed, now first the housing is mounted and then the nozzle closure is reinserted, then the seal is activated to seal the film tube so that as little dust as possible can get into the film tube.

[0016] In Fig. 1a a device 39 or a complete system for filling and / or transferring bulk material is shown, with the aid of which a container bag 55 can be filled via a tubular container bag 4 without contamination.

[0017] For this purpose, the container bag 4 is clamped to a housing 8 or a wall 9 of the housing 8 between seals 2, 3. For this purpose, a groove 28 is provided between the two seals 2, 3 pressurized with compressed air, into which the end of the container bag 4 is inserted. Seals 10 and 12 in the outlet nozzle 6 are activated, as explained below, to seal a film tube 7 so that no dust can enter the film tube.

[0018] The web is designed as an annular web 19 which is connected to the adjustable lid 5 or annular body, which is designed as a flat or thin annular structure and is oriented upwards or in the direction of an inlet opening or an upper inlet opening of the container 8 with respect to the base of the container 8 and runs approximately parallel to a longitudinal central axis 85 of the container 8.

[0019] Furthermore, the web 19 or the flat or thin annular structure is aligned coaxially to the longitudinal central axis 85 of the container (8).

[0020] The web 19 or the flat or thin annular structure can be adjusted up and down with the cover 5 in the direction of the longitudinal center axis 85 and can be pushed into or out of a gap 86 between two seals 2, 3 from below. Furthermore, it is possible for the gap 86 to serve to accommodate a portion of the film tube 4, and for one or the upper end of the gap 86 to be closed on its upper side by means of a seal or a component connected to a housing part 14 or a sealing element 87.

[0021] The web 19, in conjunction with the two seals 2, 3 and a part of the film tube, forms a sealing device with the aid of which and with the aid of the seals and an adjusting device or a pneumatic system, the container bag 4 can be secured and / or sealed.

[0022] After the bulk material has been transferred from the housing 8 into the container bag 4, which is tied off via a closure 23, the bag can be disposed of via the outlet nozzle 6, as described below.

[0023] The tubular container bag 4 is created by tying off its lower end with the aid of a closure element 23.

[0024] The second or upper end of the container bag 4 is sealed by means of at least three sealing rings 1, 2, 3 ( Fig.1a) are sealed in the steps described below in such a way that, particularly during filling and transfer of the bulk material, no or very small particles are released into the ambient air.

[0025] The individual pressurizable sealing rings 1, 2, 3 are offset from one another and arranged at a distance from one another with respect to the longitudinal center axis 85 of the device 39 for filling bulk material.

[0026] The first seal 1 is fixedly arranged on the movable cover 5 and can be adjusted up and down together with the movable cover 5.

[0027] The movable lid 5 has the upright web 19, which can be inserted into the one groove 28, so that one end of the tube of the container bag 4 can be guided around the web 19 and between the two activated seals ( Fig. 1 ) can be sealed.

[0028] The three seals consist of a hollow profile body whose cross-section can be either round, polygonal, or rectangular. The first and outer seal 1 has approximately the same outer diameter as seal 2, which is located above the two seals 1 and 3.

[0029] The tubular container bag 4 is guided with its upper end between the opposing profiles of the seals 2 and 3 and is sealed by the seal 3, as described below. The activated seal 3, pressurized with compressed air, will, as shown later, press the film tube against the web 19 of the lid 5.

[0030] The entire system 53 has according to Fig.1bamong other things, at least one support frame 54 in which the container bag 55 filled with bulk material is received, so that the bulk material can be transferred into the collection bag provided below or into the tubular container bag 4. The fourth seal 10 and the fifth seal 12 ( Fig. 2 ) are activated to seal the film tube 7 so that as little or no dust as possible can get into the film tube 7.

[0031] Depending on the process stage, the outer or first seal 1, the middle or second seal 2, and the inner or third seal 3 can be activated by compressed air via a compressed air system not shown in the drawing. All seals 1-3 are arranged at different heights.

[0032] The second seal 2 is connected to the fixed housing 8 or to an outer housing part 14 arranged on the housing 8 of the device 39.

[0033] The third seal 3 is arranged between the first and second seals 1, 2 on the fixed housing 8 of the device 39 or an inner housing part 66 of the device 39 with respect to the longitudinal direction of the housing.

[0034] According to Fig. 1a the container bag 4 is tied with a closure 23 and can be separated below the tying point, as described below.

[0035] Depending on the process status, the seals can be supplied with compressed air or activated individually or jointly. For this purpose, a compressed air channel 44 is provided, which supplies seals 1 to 3 with compressed air depending on the process status of the device 39.

[0036] The entire system consists of Fig.1afrom the cylindrical or polygonal housing 8 with the cylindrical outer wall 9 on which an outlet nozzle 6 is provided on the side for disposing of the container bag 4 or film tube 7. The outlet nozzle 6 is connected obliquely to the side of the housing 8, in which a film tube 7 is arranged according to Fig. 2 and can be removed as described below.

[0037] The outer or first seal 1 and the inner or third seal 3 are relieved ( Fig. 3 ) and the lid 5 is lowered to the lowest position P3, whereby the ends of the tubular container bag 4 are fixed to the container bag by means of adhesive strips 26 and the central seal 2 remains activated and holds the container bag.

[0038] According to Fig. 4the tubular container bag or filler neck 4 is still held and sealed by means of the central seal 2, a new tubular container bag 4' being pulled onto the lowered lid 5, which is sealed at the lower end by means of a closure 23, to which a container bag 55 yet to be filled is connected.

[0039] The lid 5 ( Fig. 5 ) is now raised to the middle position P2 and the outer seal 1 is activated, whereby the middle seal 2 remains activated and holds the first tubular container bag 4, for this purpose the web 19 with the upper end of the new tubular container bag 4' guided around can be introduced into the groove 28 and is then sealed by the seals 1-3, which are supplied with compressed air by means of a pneumatic system not shown in the drawing.

[0040] In Fig. 6the lid is raised to the middle position P2 and the outer or first seal 1 is activated, with the middle or second seal remaining activated and thereby holding the first tubular container bag 4.

[0041] Fig. 6b shows an excerpt from Fig. 6a with the seals 1 to 3 on an enlarged scale. The advantageous arrangement of the three seals 1 to 3 facilitates the disposal process of the emptied container bag 4 with the aid of the film tube 7 ( Fig. 7 ) over the outlet nozzle 6, as explained below. For this purpose, the container bag 4 is pulled upwards into the area of the inlet opening of the outlet nozzle. The new container bag 4' is connected to the lid 5 and sealed with the closure 23'.

[0042] In the Figures 7a to 23 the disposal process of the emptied container bag 4 via the outlet nozzle 6 is illustrated.

[0043] The outlet nozzle 6 consists ( Fig. 7a ) consists of a tubular housing which is provided laterally at a connection opening in the housing 8 and is firmly connected to this connection opening. The film tube ( Fig. 23 ) is meanderingly wound onto the outer circumference of the outlet nozzle 6 and placed thereon and sealed at both ends by means of seals 29-31.

[0044] In Fig. 7a Furthermore, a representation of a nozzle closure 22 with a compressed air connection 43 is shown, which serves to monitor the sealing condition of the seals with the emptied container bag 4 and to dispose of it contamination-free via the outlet nozzle 6.

[0045] The nozzle closure 22 with the compressed air connection 43 is connected to the compressed air channel 44 (7b), which can be activated by a compressed air system not shown in the drawing and which initiates the sealing process of the film tube 7.

[0046] Furthermore, the nozzle closure 22 has a cover 25' having a handle 24, with the aid of which the nozzle closure 22 can be moved or held and inserted into or removed from the tubular outlet nozzle, as described below.

[0047] The cover 25' is placed and sealed onto a tubular housing 32 of the nozzle closure 22 by means of the seal 30.

[0048] The housing 32 of the nozzle closure 22 is secured at the other end by means of the cover 25' ( Fig. 7c) and the annular plate-shaped seal 29, which rests against the front edge of a housing part 32' of the nozzle closure 22. The housing part 32 of the nozzle closure 22 is according to Fig. 7a inserted into the outlet nozzle 6 and sealed with the seal 12 ( Fig. 7c , 7d , 8 ).

[0049] The seal 12 is slightly wrapped around the wall of the housing part 32 at both ends ( Fig. 7C ) and thus rests with its two ends on the inside of the wall of the housing part 32 and on the outside over the entire length of the wall of the housing part 32 and thus seals the housing part 32 against the inside of the outlet nozzle 6.

[0050] In this way, the two ends of the seal 12 are clamped between the wall of the housing part 32 of the nozzle closure 22 and the inside of the outlet nozzle 6. This seals the nozzle closure 22 in the outlet nozzle 6.

[0051] The wall of the housing part 32 of the nozzle closure 22 is provided with numerous holes 63 through which compressed air can pass, allowing the seal 12 to expand and press against an inner wall 41 of the outlet nozzle 6, thus increasing the sealing effect. The seal 12 seals the film tube 7 in the outlet nozzle 6.

[0052] The outer end of the housing 32 is held together by a threaded rod 60, with the inner end of the threaded rod 60 being welded to a cover 25 of the housing 32 of the nozzle closure 22. The other end of the threaded rod 60 (Fig. 7c A) extendsthrough an opening 65 in the cover 25' of the nozzle closure 22 and is provided with the cap nut 31, with the aid of which the two outer ends of the nozzle closure 22 are held together and thus the covers 25 and 25' each rest against the two ends of the housing part 32 of the nozzle closure 22 and seal.

[0053] According to Fig. 7b the fourth seal 10 and the fifth seal 12 are relieved, whereby the nozzle closure 22 is removed from the outlet nozzle 6.

[0054] According to Fig. 8 The operator reaches into the outlet nozzle 6 and is protected from contamination by the film tube 7. He grasps the previously emptied tubular container bag 4 to pull it into the film tube 7.

[0055] Fig. 9shows that the emptied tubular filling nozzle 4 can be pulled outwards through the film tube 7 and the outlet nozzle 6 and thus free from contamination ( Fig. 10 ) can be disposed of in the film tube 7 that is still to be separated. The separated film tube 7 remaining in the outlet nozzle 6 is sealed by a first closure 11, and the film tube 7 leading out of the outlet nozzle 6 with the enclosed container bag 4 is completely sealed to the outside by means of a second 11' and third closure 11" and can now be disposed of contamination-free with the enclosed film tube 4.

[0056] According to Fig. 10the film tube 7 with the emptied tubular container bag 4 contained therein is tied off with the two closures 11' and 11", whereby the end of the film tube 7 with the tubular container bag 4 enclosed therein is then severed between these two closures 11' and 11".

[0057] According to Fig.11a The nozzle closure 22 is reinserted into the outlet nozzle 6, with the fifth seal 12 and the fourth seal 10 pressurized and the nozzle closure remaining sealed. The lid 5 is raised to the highest position P1. The outer seal 1 is pressurized to the required pressure so that the tubular filler nozzle is tightly sealed with the container bag 4' and simultaneously allows the lid 5 to be lifted to the highest position P1.

[0058] Fig.11bshows the lid 5 with the three seals 1 to 3 on an enlarged scale. The web 19 of the lid 5 presses the tubular filler neck 4' into the groove 28. The groove 28 is formed by an outer wall 68 of the housing part 66 and the second seal 2, which is offset upwards with respect to the base of the device 39 and is located on the outside, into which the web 19 is inserted with the aid of an actuating cylinder not shown in the drawing. The third seal 3 has an outer diameter which is slightly smaller than the inner diameter of the second seal 2. The film tube of the container bag 4' is in this position ( Fig.11) is guided around the web 19 and then guided through the gap between the opposing seals 1 and 2. The two seals 10 and 12 are still not pressurized, but seal 1 is, so that the end of the container bag 4' received in the gap 86 remains clamped and sealed. The second seal 2 and the third seal 3 are not yet activated.

[0059] The housing part 66 provided on the housing 8 is connected to a flange 67. The downwardly extending cylindrical nozzle 14 is also connected to the flange 67 and encloses the two seals 1 and 2.

[0060] According to Fig.12a and 12bthe lid 5 is lowered to the middle position P2, with the outer seal 1 still being subjected to the required pressure via the compressed air line (not shown in the drawing), so that the tubular filler neck 4' is sealed and thereby allows the lid 5 to be lifted to the middle position P2. The seal 2 is now also subjected to pressure, so that the film tube 4' remains clamped in the groove 28 and is sealed. This also presses the seal 2 against the outer wall 68 of the housing part 66, thereby clamping the film tube 4'. This seals the tubular connecting element 4' to the outside.

[0061] The jetty 19 ( Fig.12b) of the cover 5 can now be pulled downward from the groove 28, and the seal can be activated with a defined pressure. After the cover 5 has reached the middle position P2, the middle seal 2 and the seals 1 and 3 can be subjected to full pressure, sealing the tubular connection piece 4'.

[0062] According to Fig.13 the tubular connecting element 4' is tied on and the container bag 55 connected to it can be filled, whereby all seals 1, 2 and 3 remain activated with full pressure. New, revised from here

[0063] Out of Fig. 14a It can be seen that after filling the container bag 55, the tubular connecting element 4' and the container bag 55 are tied off with two closures 23' and 23" and the container bag 55 can now be removed without contamination. For this purpose, the tubular filling nozzle 4' and the container bag 55 ( Fig. 14b) between these closures 23' and 23". In this process step, all seals 1, 2 and 3 are activated with full pressure. This position corresponds to the initial situation already described and the next emptying process can take place in the same sequence as previously described.

[0064] In the figures from 15a to Figure 23 The contamination-free disposal of the tubular connecting element or container bag 4 is described.

[0065] As from Fig. 15a and Figure 16 As can be seen, a section of the film tube 7 is consumed during each filling process. This section is folded axially and meanderingly and applied to the outlet nozzle 6, so that a length of several meters can be achieved. The consumption during one filling process is, for example, 0.4 m, so that with a total length of the film tube of 7.2 m, approximately 18 fillings are possible.

[0066] According to Figure 15b, the nozzle closure 22 is again received in the outlet nozzle 6, and the film tube 7 pulled onto the outlet nozzle 6 is clamped and sealed in a circumferential groove 36 formed between a movable ring 33 and a counterholder 34. The clamping effect is achieved by pressing the movable ring 33 against a seal 13 provided between the movable ring 33 and the counterholder 34 in the groove 36 of the counterholder 34. The counterholder 34 is fastened to a nozzle shoulder 37 by means of screws 69 and welded to the outlet nozzle 6a. The clamping effect of the film tube 7 is made possible by the seal 13, which is received in a groove 36 provided in the counterholder 34.The clamping effect and thus the fastening and sealing of the film tube 7 is achieved with the aid of the seal 13, wherein the contact pressure of the movable ring 33 can be effected in different ways, as described below in various embodiments.

[0067] A corresponding clamping device can be created with or without auxiliary energy, for example, the clamping device can be actuated mechanically, magnetically, pneumatically, as described in the Figures 22c to 22i is explained.

[0068] In order to put a new film tube 7 over the fixed outlet nozzle 6 attached to the housing 8, the seals 10 and 12 must be relieved and the nozzle closure 22 and a housing 35 must be removed ( Figure 16 ).

[0069] After Fig. 17One end 40 of the film tube 7 is folded forward on the outer circumference of the outlet nozzle 6, and the film tube 7 is clamped in the groove 36 between the movable ring 33 and the counterholder 34 by means of the counterholder 34 and the seal 13. The film tube 7 is thereby sealed and secured.

[0070] According to Fig. 18 a new film tube 7' is put over the rest of the film tube 7 and pulled onto the nozzle shoulder 37, whereby the end of the new film tube 7 is closed with the closure 11'.

[0071] How Fig. 19a As shown, the new film tube 7' is fixed and sealed to the nozzle shoulder 37 by means of a clamping element 20. For this purpose, the end of the film tube 7' is clamped in the clamping element 20.

[0072] As from Figure 19bAs can be seen, the tensioning element 20 consists of a metal band 70 with a hook 71 into which a toggle lever closure 72 engages and is tensioned, so that the film tube 7' is clamped and sealed with the aid of the tensioning element 20. A C-shaped profile seal 61 with the embedded metal band 70 serves to reinforce a groove 38. The diameter of the tensioning element 20, which is designed as a tensioning ring, can be changed with the aid of a tensioning device 84, which has a worm thread with an adjusting screw, and the contact pressure on the outlet nozzle 6 can be increased or decreased when the adjusting screw is actuated for this purpose.

[0073] According to Fig. 20 an operator reaches into the outlet nozzle 6 with his hand and, with the help of the film tube 7', pulls the previous or old film tube 7 out of the outlet nozzle 6 without contamination.

[0074] In Fig. 21the film tube 7 is completely received in the film tube 7' and tied off with two closures 11' and 11". Now the end of the film tube 7' lying outside the outlet nozzle 6 with the previous film tube 7 enclosed therein between the two closures 11' can be separated from the part of the film tube 7' remaining in the outlet nozzle 6 and disposed of.

[0075] According to Fig. 22a With the aid of an aid such as a rope or a template, the new film tube 7' can be pressed into the circumferential groove 36 inwards towards the outer circumference of the outlet nozzle 6, whereby the film tube 7' can then be secured to the movable ring 33 ( Figure 22b) is pressed against the seal 13 provided in the groove or gap 90 and is fixed and sealed with the aid of a clamping element 20. The other end of the film tube 7' can then be reinserted into the outlet nozzle 6 and sealed by means of the closure 11'.

[0076] In a first embodiment of the clamping and sealing device Fig. 22b The clamping and sealing device with the clamping element 20 is shown on a larger scale. The movable ring 33 clamps the front or second end of the film tube 7' against the seal 13 in the groove or gap 36, which is accommodated in the counterholder 34, as indicated by the upper arrow. The counterholder 34 is secured in the nozzle shoulder 37 by means of one or more screw bolts 62. The nozzle shoulder 37 is firmly connected or welded to the outlet nozzle 6, as shown in Figures 1a and 22b.

[0077] According to one embodiment Fig. 22c, which is an enlarged view of the Figure 22a shows, another clamping and sealing device 75 is shown. The movable ring 33 is pulled against the counter-holder 34 with the help of several magnets 56a. To release the clamping and sealing device, several threaded spindles 51 are firmly connected to the movable ring 33. The threaded spindles 51 extend through bores 82 in the nozzle shoulder 37 and protrude on a rear surface 83 of the nozzle shoulder 37 so that a threaded nut 50 can be screwed onto the free end of the threaded spindle 51. By tightening the threaded nut 50, the movable ring 33 is removed from the magnets 56a so that the film tube 7' can be inserted into the groove 36 or removed from the groove 36.

[0078] With the help of a pneumatic or electric cylinder 56b ( Fig. 22d) The stroke movement of the movable ring 33 is generated by a piston rod 57, which is connected at one end to the movable ring 33 and at the other end to the pneumatic or electric cylinder. With the help of the stroke movement of the piston rod 57, the movable ring 33 can be adjusted, thus opening or closing the groove 36.

[0079] In the following examples 22e to 22i, the opening or closing of the groove 36 is shown by differently designed adjusting devices.

[0080] Fig. 22e has a clamping and sealing device 77 for adjusting a rack 58, which opens or closes the groove 36 with the aid of a rack gear 56c.

[0081] Fig. 22f has a toggle lever clamp 56d as an adjusting device, which is connected to the movable ring 33 via an extension rod 59 and in this way enables adjustment of the movable ring 33.

[0082] Fig. 22g shows the toggle lever clamp 56d, with the help of which the movable ring 33 can be adjusted.

[0083] Fig. 22h shows a clamping and sealing device 80 having a threaded spindle 56f, which is rotatably connected at one end by means of a rotatable bearing, for example a ball bearing. The threaded spindle 56f is adjustable by means of a thread provided in the socket shoulder 37, so that the groove 36 can be opened or closed.

[0084] In Fig. 22i A clamping and sealing device 81 is designed as a pneumatic device, which includes a pneumatic sealing ring 56g, which can close or open the groove 36 with the aid of compressed air. The compressed air supply is provided via a pneumatic system not shown in the drawing.

[0085] According to Fig.16 and 23The new film tube 7' is applied to the outlet nozzle 6 and the nozzle shoulder 37. Now, the housing 35 can first be mounted on the nozzle shoulder 37, and then the nozzle closure 22 can be reinserted into the outlet nozzle 6. Subsequently, the seal 10 and the seal 12 are activated to seal the film tube 7' so that as little dust as possible can enter the film tube. List of reference symbols

[0086] 1First seal, outer 2Second seal, middle 3Third seal 4Tubular container bag, filler neck 4'Tubular filler neck, container bag 5Movable lid, toroidal body 6Outlet neck 7Foil hose 7'Foil hose 8Housing, collecting housing, container 9Wall of the housing 10Fourth seal 11Closure 11'Closure seal 1 11"Closure seal 1 12Fifth seal 13Sixth seal 14Outer housing part, connection part for collecting housing 15Lower side of cover 5 17Inside of cover 5 18Space, empty 19Web 19aFlat, thin structure 20Clamping element 21Space, empty 22Neck closure 22'Housing wall of the neck closure (22) ( Fig. 7c) 23 Closure 23' Closure 23" Closure 24 Handle 25 Cover 25' Cover for the housing of the nozzle closure 26 Adhesive strip 27 Movable ring, threading ring 28 Groove or gap 29 Annular seal for web 30 First annular, plate-shaped seal 31 Screw nut or cap nut with seal 32 Housing part of the nozzle closure 33 Movable ring 34 Counterholder 35 Housing 36 Groove or gap 37 Housing part, nozzle shoulder 38 Recess, groove 39 Device for filling bulk material into a tubular container bag 40 End of film tube 7 41 Inner wall of outlet nozzle 6 42 Compressed air connection, intermediate space, annular space, annular channel 43 Compressed air connection 44 Pressure channel,Compressed air line 45 Pressure channel measurement 46 Pressure sensor 48 Outer wall of outlet nozzle 6 49 Gap in chamber 50 Threaded nut 51 Threaded spindle 52 End stop 54 Support frame 55 Container bag 56a Magnet 56b Pneumatic or electric cylinder 56c Rack and pinion gear 56d Toggle clamp 56e Eccentric clamping mechanism 56f Threaded spindle 56g Pneumatic seal, sealing ring 57 Piston rod 58 Rack and pinion 59 Extension rod 60 Threaded rod 61 C-shaped profile seal 62 Screw bolt 63 Hole of 32 65 Opening in the cover 25 66 Inner housing part 67 Flange 68 Outer wall of the housing part 66 69 Screw 70 Metal band 71 Hook 72Knob lever closure 73Opening in the nozzle closure,Housing part 74Clamping and sealing device 75Clamping and sealing device 76Clamping and sealing device 77Clamping and sealing device 78Clamping and sealing device 79Clamping and sealing device 80Clamping and sealing device 81Clamping and sealing device 82Bore in nozzle shoulder 37 83Rear surface of nozzle shoulder 37 84Clamping device with a worm thread with set screw, notch 85Longitudinal center axis of the housing 8 86Gap 87Component, sealing element 88Gap for movable ring 33 90Groove or gap for seal 13,

Claims

1. Method for using a device for emptying a container bag (4) or an emptied tubular container bag (4) from a device (39) for filling bulk material, comprising the following features: a) the device has a housing (8) for receiving pourable material, which can be transferred into the container bag (4) and disposed of after use or emptying of the pourable material via an outlet opening or an outlet nozzle (6) having an outlet opening; b) the outlet nozzle (6) is connected to the housing (8); c) an opening is provided between the outlet nozzle (6) and the housing (8); characterised by the following features: d) a film tube (7) is placed on the outer circumference of the housing wall of a nozzle closure (22), the end of which is guided around the housing wall and placed against an inner wall (41) of the housing wall and sealed with the aid of a closure (11); e) the nozzle closure (22) is inserted into the inlet nozzle (6) and is used to additionally seal the film tube (7) and the inlet nozzle (6); f) the nozzle closure (22) is adapted with its outer circumference to the inner circumference of the outlet nozzle (6) and has openings at its two ends which can be closed with the aid of a respective cover (25, 25').

2. Method according to claim 1, characterised in that the two covers (25, 25') can be pressed against the two opposing openings of the nozzle closure (22) with the aid of a pressing device and seal the interior of the nozzle closure (22).

3. Method according to claim 1 or 2, characterised in that the pressing device is configured as a rod or threaded rod (60) which is firmly connected at one end to the first cover (25), extends at its other end through an opening (65) provided in the second cover (25') and a screw nut (31) is screwed onto the rod, with the aid of which nut the two covers (25, 25') can be pressed against the two ends of a cylindrical housing wall (22') of the nozzle closure (22).

4. Method according to claim 1 or 2, characterised in that the housing wall (22') of the nozzle closure (22) has one or more openings (73) via which compressed air is guided against a cylindrical ring seal or fifth seal (12) and presses this against the inside of the outlet nozzle (6) and seals it off from the outside when it is inserted into the interior of the outlet nozzle (6).

5. Method according to claim 4 or one or more of the preceding claims characterised in that the cylindrical ring seal or fifth seal (12) bears against the outside of the housing wall (22') and is guided around the ends of the housing wall (22') in each case and bears against the housing wall (22') over a certain region and the ends of the housing wall (22') are pressed against a seal or ring-shaped and / or plate-shaped seal (29, 30) bearing against the cover (25, 25') in each case with the aid of the pressing device.

6. Method according to one or more of the preceding claims, characterised in that the first emptied container bag (4) is to be removed via the outlet nozzle (6) arranged on the side of the housing (8) and a second container bag (4') connected to the movable ring body is to be connected to the collecting housing (8) and closed via a closure (23') and refilled, so that the pourable material can be transferred from the new or second container (4') into a third container bag (55), which can be closed with the aid of a further or the first or upper and a second or lower closure (23, 23').

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