Sterile filling equipment

Abstract

The utility model relates to sterile filling equipment which comprises a machine frame, at least one sterile filling station is arranged on the machine frame, each sterile filling station comprises a filling chamber mechanism, and a center hole is formed in the bottom of each filling chamber mechanism and used for being matched with a bag opening of a packaging bag. The filling chamber mechanism is provided with a sealing cover, so that a bag opening of the packaging bag and the sealing cover installed on the bag opening enter the filling chamber mechanism, the filling chamber mechanism is provided with a cover pulling mechanism and a filling mechanism in a matched mode, the cover pulling mechanism is used for pulling out the sealing cover from the bag opening or inserting the sealing cover into the bag opening, and the filling mechanism is used for quantitatively filling liquid materials into the packaging bag through the bag opening. By arranging the cover pulling mechanism, cover pulling and covering can be automatically carried out in the filling chamber mechanism, the working efficiency is effectively improved, liquid materials in packaging bags can be effectively prevented from being polluted, and the product quality and safety are improved; and meanwhile, by arranging the filling mechanism, accurate quantitative filling can be achieved, the filling precision is improved, and the consistency of product specifications is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of aseptic filling technology, and in particular to an aseptic filling device. Background Technology

[0002] Food filling machines are equipment used to fill products in a sterile environment. They are mainly used to fill sterilized beverage products into sterile containers and seal them to ensure that the products have a long shelf life without refrigeration.

[0003] In existing technology, the structure of a filling machine mainly includes a filling chamber, a filling head, and a steam sterilization system. The steam sterilization system sprays steam into the filling chamber for sterilization. Then, the opened packaging bag is placed into the filling chamber, and the liquid material is filled into the bag through the filling head, thus completing the filling process. However, traditional filling machines have the following problems:

[0004] (1) The manual capping and capping method is inefficient; and the capping of the packaging bag in the room temperature environment after filling is easy to cause the material inside the bag to be contaminated. The control of the sterile environment is relatively rough, making it difficult to achieve true sterile packaging, which affects the quality and safety of the product.

[0005] (2) Relying on weighing sensors to control the filling volume is affected by the accuracy of the weighing sensors and various external factors (material flowability, steam temperature), it is usually difficult to achieve high-precision filling requirements, resulting in low filling accuracy and affecting the consistency of product specifications. Utility Model Content

[0006] Therefore, it is necessary to provide an aseptic filling device to address the problems of low working efficiency, difficulty in achieving true aseptic packaging, low filling accuracy, and poor product specification consistency of existing filling machines.

[0007] The technical solution adopted in this utility model is as follows:

[0008] An aseptic filling device includes a frame with at least one aseptic filling station. Each aseptic filling station includes a filling chamber mechanism with a central hole at its bottom. The central hole is designed to engage with the opening of a packaging bag, allowing the opening of the packaging bag and a sealing cap mounted on the opening to enter the interior of the filling chamber mechanism. A cap removal mechanism and a filling mechanism are mounted on the filling chamber mechanism. The cap removal mechanism is used to remove the sealing cap from the opening of the bag or to insert the sealing cap into the opening of the bag. The filling mechanism is used to quantitatively fill the packaging bag with liquid material through the opening of the bag.

[0009] As a further improvement to the above technical solution:

[0010] In a single aseptic filling station, when it is necessary to remove or insert a sealing cap, the filling chamber mechanism drives the cap removal mechanism to align with the center hole; when it is necessary to fill, the filling chamber mechanism drives the filling mechanism to align with the center hole.

[0011] The structure of a single filling chamber mechanism is as follows: it includes an internally hollow cavity, a fixed top plate is provided on the top of the cavity, a movable top plate is installed on the top of the fixed top plate, and a cap-removing mechanism and a filling mechanism are installed on the movable top plate.

[0012] The top of the fixed top plate is fixed with two opposing first cylinders. The output ends of the two first cylinders are simultaneously connected to the movable top plate. The two first cylinders drive the movable top plate to reciprocate linearly in the horizontal direction, thereby driving the capping mechanism and the filling mechanism to reciprocate linearly in the horizontal direction.

[0013] For a single filling chamber mechanism, a bag clamping mechanism is installed on each of the opposite side walls of the cavity. The two bag clamping mechanisms operate simultaneously to clamp or release the bag opening that extends into the cavity through the central hole.

[0014] The structure of a single bag clamping mechanism is as follows: it includes a fourth cylinder, the output end of which is connected to a clamping plate.

[0015] For a single filling chamber mechanism, a sensor assembly is installed on one side wall of the chamber to detect whether a sealing cap is installed on the bag opening.

[0016] The structure of a single cap-removing mechanism is as follows: it includes a cap-removing hollow shaft, a cap-removing drive shaft is concentrically mounted in the middle of the cap-removing hollow shaft, a gripper assembly is hinged to the end of the cap-removing drive shaft, the gripper assembly has several grippers, each gripper is also hinged to a mounting base, the mounting base is fixed to the end of the cap-removing hollow shaft, and a top block is fixed to the outer bottom wall of the mounting base.

[0017] A first lifting plate is fitted on the outer circumference of the cap-removing hollow shaft. Two cap-pressing cylinders are fixed on the top of the first lifting plate. The two cap-pressing cylinders are symmetrically arranged relative to the cap-removing hollow shaft. The output end of a single cap-pressing cylinder is connected to a second cylinder, and the output end of a single second cylinder is connected to the filling chamber mechanism.

[0018] A cap-removing cylinder is fixed to the top of the first lifting plate, and the output end of the cap-removing cylinder is connected to the cap-removing drive shaft.

[0019] The cap removal cylinder drives the cap removal transmission shaft to reciprocate linearly in the vertical direction relative to the cap removal hollow shaft, thereby causing a single gripper to rotate around the hinge point with the mounting base, and thus causing the gripper assembly to clamp or release the sealing cap.

[0020] When the sealing cap is pulled out of the bag opening, the two second cylinders simultaneously drive the first lifting plate to move in the vertical direction, thereby driving the gripper assembly to move in a straight line in the vertical direction through the cap-pulling hollow shaft, and then pulling the sealing cap out of the bag opening through the gripper assembly.

[0021] When the sealing cap is inserted into the bag opening, the two second cylinders simultaneously drive the first lifting plate to move vertically. The cap-pulling hollow shaft drives the gripper assembly to place the sealing cap into the corresponding bag opening. Then, the two cap-pressing cylinders simultaneously drive the first lifting plate to move vertically, thereby driving the top block through the cap-pulling hollow shaft to press the sealing cap into the corresponding bag opening.

[0022] In a single cap removal mechanism, a cap removal sleeve is fitted on the outer circumference of the cap removal hollow shaft, and the cap removal sleeve is fixed to the top of the filling chamber mechanism.

[0023] The structure of a single filling mechanism is as follows: it includes a second lifting plate arranged above the outside of the filling chamber mechanism. The second lifting plate is fixed on the outer circumferential surface of the filling hollow shaft. A filling drive shaft is concentrically installed in the middle of the filling hollow shaft. The diameter of the filling drive shaft is smaller than the inner diameter of the filling hollow shaft, thereby forming a filling cavity between the outer wall surface of the filling drive shaft and the inner wall surface of the filling hollow shaft. The filling cavity is connected to the output end of the material supply system through a hose assembly, thereby conveying liquid into the filling cavity through the material supply system. The bottom of the filling hollow shaft is provided with an opening communicating with the filling cavity, thereby forming a filling port that allows the liquid to flow out of the filling cavity.

[0024] The bottom of the second lifting plate is fixed with two third cylinders symmetrically arranged opposite to the filling hollow axis. The output ends of the two third cylinders are simultaneously connected to the filling chamber mechanism. The two third cylinders simultaneously drive the second lifting plate to move in a straight line in the vertical direction, so that the filling port is inserted into or removed from the corresponding bag opening.

[0025] A filling cylinder assembly is fixed on the outer top wall of the filling hollow shaft. The output end of the filling cylinder assembly is connected to the filling drive shaft. A material blocking seal ring is fitted on the outer circumferential surface of the end of the filling drive shaft. The filling cylinder assembly drives the filling drive shaft to move vertically upward or downward relative to the filling hollow shaft, thereby opening or closing the filling port through the material blocking seal ring.

[0026] In a single filling mechanism, the filling cylinder assembly includes a first filling cylinder and a second filling cylinder arranged in series in the vertical direction. By controlling the piston rod of the first filling cylinder to extend or retract, the gap distance between the inner wall of the filling port and the outer circumferential surface of the filling drive shaft is adjusted, thereby adjusting the flow rate of liquid flowing out through the filling port.

[0027] Each aseptic filling station also includes a bag pressing mechanism, which is used to press the packaging bag body outside the corresponding filling chamber mechanism to prevent steam inside the filling chamber mechanism from entering the packaging bag;

[0028] The bag pressing mechanism is structured as follows: it includes a bag pressing cylinder fixed on the frame, the output end of the bag pressing cylinder is connected to a pressing block, the bag pressing cylinder extends, thereby driving the pressing block to make a linear movement close to the outer bottom wall of the corresponding filling chamber mechanism, and thus pressing the packaging bag body through the pressing block.

[0029] The beneficial effects of this utility model are as follows:

[0030] This utility model has a compact and reasonable structure and is easy to operate. By setting a cap-removing mechanism, it can automatically remove and install caps inside the filling chamber, effectively improving work efficiency and preventing the liquid in the packaging bag from being contaminated, thus improving product quality and safety. At the same time, by setting a filling mechanism, it can achieve precise quantitative filling, improve filling accuracy, and effectively ensure product specification consistency.

[0031] This utility model also has the following advantages:

[0032] (1) By setting up one or more aseptic filling stations, different aseptic filling stations can work independently, which can effectively improve filling efficiency.

[0033] (2) By setting up a filling chamber mechanism, which is filled with high-temperature steam, a sterile environment is provided for filling liquid materials.

[0034] (3) By setting up a bag clamping mechanism, the bag opening of the packaging bag can be clamped during cap removal, cap filling and filling, which effectively improves the stability of the equipment operation process.

[0035] (4) By setting a capping cylinder, after the second cylinder drives the gripper assembly to put the sealing cap into the corresponding bag opening, the sealing cap is pressed into the corresponding bag opening, thereby ensuring the sealing performance of the packaging bag.

[0036] (5) By setting up a bag pressing mechanism, excess steam can be avoided from being introduced into the packaging bag, which will affect the filling accuracy, thereby effectively improving the consistency of the product weight after filling. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0038] Figure 2 This is a schematic diagram of the pressure bag mechanism of this utility model.

[0039] Figure 3 This is a schematic diagram of the structure of a single aseptic filling station in this utility model. Figure 1 .

[0040] Figure 4 This is a schematic diagram of the structure of a single aseptic filling station in this utility model. Figure 2 (Part of the cavity is omitted.)

[0041] Figure 5 This is a schematic diagram of the cap-removing mechanism in this utility model.

[0042] Figure 6 This is a schematic diagram of the filling mechanism in this utility model.

[0043] Figure 7 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0044] Figure 8 This is a schematic diagram of the material supply system in this utility model.

[0045] Figure 9 This is a schematic diagram of the steam supply system in this utility model.

[0046] The components include: 1. Filling chamber mechanism; 2. Capping mechanism; 3. Filling mechanism; 4. Electrical control box; 5. Bag clamping mechanism; 6. Bag pressing mechanism; 7. Sensor assembly; 8. Material supply system; 9. Steam supply system; 10. Frame; 11. Operating table; 12. Button assembly; 13. Cooling fan;

[0047] 101. First cylinder; 102. Movable top plate; 103. Fixed top plate; 104. Clearance hole;

[0048] 201. Second cylinder; 202. Capping cylinder; 203. Cap removal cylinder; 204. First lifting plate; 205. Cap removal sleeve; 206. Cap removal hollow shaft; 207. Cap removal drive shaft; 208. Clamping jaw; 209. Mounting base; 210. Top block;

[0049] 301. Third cylinder; 302. Second lifting plate; 303. First filling cylinder; 304. Second filling cylinder; 305. Filling sleeve; 306. Hollow filling shaft; 307. Filling drive shaft; 308. Filling chamber; 309. Filling port; 310. Blocking seal ring;

[0050] 501. Fourth cylinder; 502. Clamping plate;

[0051] 601. Bag-pressing cylinder; 602. Pressing block;

[0052] 801. First main pipe; 802. Second main pipe; 803. First branch pipe; 804. Second branch pipe; 805. Third branch pipe; 806. Fourth branch pipe; 807. Pneumatic shut-off valve; 808. Connecting branch pipe; 809. Electromagnetic flow meter; 810. Pneumatic butterfly valve;

[0053] 901. Steam supply main pipe; 902. Y-type filter; 903. Pressure reducing valve; 904. Drain valve; 905. Fifth branch pipe; 906. Sixth branch pipe; 907. Seventh branch pipe; 908. Eighth branch pipe; 909. Ninth branch pipe; 910. Tenth branch pipe; 911. Gas supply branch pipe; 912. Gas distribution cylinder; 913. Vacuum generator. Detailed Implementation

[0054] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0055] The structure and function of this utility model are as follows:

[0056] like Figures 1-7 As shown, an aseptic filling device includes a frame 10 with at least one aseptic filling station. Each aseptic filling station includes a filling chamber mechanism 1 with a central hole at its bottom for engaging with the opening of a packaging bag. This allows the opening of the packaging bag and a sealing cap mounted on it to enter the filling chamber mechanism 1. A cap-removing mechanism 2 and a filling mechanism 3 are mounted on the filling chamber mechanism 1. The cap-removing mechanism 2 removes the sealing cap from the bag opening or inserts it into the bag opening. The filling mechanism 3 quantitatively fills the packaging bag with liquid material through the bag opening. Figure 1 , Figure 7 As shown in the figure, in this utility model, one or two or more aseptic filling stations can be set on the frame 10. Different aseptic filling stations work independently of each other, which can effectively improve filling efficiency.

[0057] In this invention, the packaging bag adopts a bag-in-box design. Its structure includes a bag body with an opening forming the bag opening. A sealing cap is installed inside the bag opening. The sealing cap can be a flat cap or a box cap integrated with a butterfly valve. In the initial state, there is approximately a 5mm gap between the sealing cap and the bag opening, facilitating subsequent opening via a gripper assembly. When installing the cap, the gap between the sealing cap and the bag opening must be eliminated, and the sealing cap must be fully pressed into the bag opening to achieve a seal.

[0058] In a single aseptic filling station, when it is necessary to remove or insert a sealing cap, the filling chamber mechanism 1 drives the cap removal mechanism 2 to align with the center hole; when filling is required, the filling chamber mechanism 1 drives the filling mechanism 3 to align with the center hole. For example... Figures 3-4As shown, the structure of a single filling chamber mechanism 1 is as follows: it includes an internally hollow cavity, a fixed top plate 103 is provided on the top of the cavity, a movable top plate 102 is installed on the top of the fixed top plate 103, and a cap-removing mechanism 2 and a filling mechanism 3 are installed on the movable top plate 102; a first cylinder 101 is fixed on the top of the fixed top plate 103 and is arranged opposite to it, and the output ends of the two first cylinders 101 are simultaneously connected to the movable top plate 102. The two first cylinders 101 drive the movable top plate 102 to reciprocate linearly in the horizontal direction, thereby driving the cap-removing mechanism 2 and the filling mechanism 3 to reciprocate linearly in the horizontal direction. The cavity is generally square, consisting of a top assembly, a bottom plate, and four side plates. The top plate assembly includes a fixed top plate 103 and a movable top plate 102. Under the action of two first cylinders 101, the movable top plate 102 can move linearly relative to the fixed top plate 103. To ensure the smooth movement of the movable top plate 102, a clearance hole 104 is provided on the end face of the fixed top plate 103. The clearance hole 104 is used to avoid the parts of the cap-removing mechanism 2 and the filling mechanism 3 located inside the cavity. The center hole is located on the bottom plate. In addition, a polytetrafluoroethylene (PTFE) lower pad is attached to the outer wall of the bottom plate. The front and rear side plates of the cavity are made of glass, which facilitates the operator to observe the working status of the internal components. The left and right side plates of the cavity are made of metal, and a bag-clamping mechanism 5 is installed on each of the left and right side plates.

[0059] In this invention, before filling a batch of liquid material, the filling chamber mechanism 1 is first sterilized. After sterilization, an appropriate amount of steam is introduced into the chamber to maintain the internal temperature within a suitable range and a suitable positive pressure, thus ensuring the chamber is sterile. By providing a sterile environment for liquid material filling, the filling chamber mechanism 1 is equipped with high-temperature steam.

[0060] like Figure 4 As shown, for a single filling chamber mechanism 1, bag clamping mechanisms 5 are respectively installed on the opposite side walls of the cavity. The two bag clamping mechanisms 5 operate simultaneously to clamp or release the bag opening that extends into the cavity through the central hole. The structure of a single bag clamping mechanism 5 includes a fourth cylinder 501, the output end of which is connected to a clamping plate 502. By setting the bag clamping mechanism 5, the bag opening of the packaging bag can be clamped during cap removal, cap filling, and filling, effectively improving the stability of the equipment operation process.

[0061] like Figure 4 As shown, for a single filling chamber mechanism 1, a sensor assembly 7 is installed on one side wall of the chamber. Specifically, a sensor assembly 7 is installed on a side plate near the capping mechanism 2. The sensor assembly 7 is used to detect whether a sealing cap is installed on the bag opening, thereby realizing automatic capping and capping.

[0062] like Figure 5As shown, the structure of a single cap-removing mechanism 2 is as follows: it includes a cap-removing hollow shaft 206, a cap-removing drive shaft 207 concentrically mounted in the middle of the hollow shaft 206, a gripper assembly hinged to the end of the drive shaft 207, several grippers 208 in the gripper assembly, each gripper 208 also hinged to a mounting base 209, the mounting base 209 fixed to the end of the hollow shaft 206, and a top block 210 fixed to the outer bottom wall of the mounting base 209; the outer circle of the hollow shaft 206... A first lifting plate 204 is installed on the periphery. Two capping cylinders 202 are fixed to the top of the first lifting plate 204. The two capping cylinders 202 are symmetrically arranged relative to the cap-removing hollow shaft 206. The output end of each capping cylinder 202 is connected to a second cylinder 201, and the output end of each second cylinder 201 is connected to the filling chamber mechanism 1. A cap-removing cylinder 203 is fixed to the top of the first lifting plate 204. The output end of the cap-removing cylinder 203 is connected to the cap-removing drive shaft 207. Cylinder 203 drives the cap-removing drive shaft 207 to reciprocate linearly in the vertical direction relative to the cap-removing hollow shaft 206, thereby causing the single gripper 208 to rotate around the hinge point with the mounting base 209, thus causing the gripper assembly to clamp or release the sealing cap; when the sealing cap is pulled out of the bag opening, the two second cylinders 201 simultaneously drive the first lifting plate 204 to move vertically, thereby driving the gripper assembly to move linearly in the vertical direction through the cap-removing hollow shaft 206, and thus pulling the sealing cap out of the bag opening through the gripper assembly; when the sealing cap is inserted into the bag opening, the two second cylinders 201 simultaneously drive the first lifting plate 204 to move vertically, thereby driving the gripper assembly to place the sealing cap into the corresponding bag opening through the cap-removing hollow shaft 206, and then the two cap-pressing cylinders 202 simultaneously drive the first lifting plate 204 to move vertically, thereby driving the top block 210 to press the sealing cap into the corresponding bag opening through the cap-removing hollow shaft 206. By setting a capping cylinder 202, after the second cylinder 201 drives the gripper assembly to put the sealing cap into the corresponding bag opening (at this time, there is still a gap of about 5mm between the sealing cap and the bag opening), the sealing cap is pressed into the corresponding bag opening, thereby ensuring the sealing performance of the packaging bag.

[0063] In a single cap-removing mechanism 2, a cap-removing sleeve 205 is fitted onto the outer circumferential surface of the cap-removing hollow shaft 206, and the cap-removing sleeve 205 is fixed to the top of the filling chamber mechanism 1. A first sealing ring assembly is fitted between the inner wall of the cap-removing sleeve 205 and the outer circumferential surface of the cap-removing hollow shaft 206, and the sealing of the cavity is ensured by setting the first sealing ring assembly.

[0064] like Figure 6As shown, the structure of a single filling mechanism 3 is as follows: it includes a second lifting plate 302 arranged above the outside of the filling chamber mechanism 1. The second lifting plate 302 is fixed to the outer circumferential surface of the filling hollow shaft 306. A filling drive shaft 307 is concentrically installed in the middle of the filling hollow shaft 306. The diameter of the filling drive shaft 307 is smaller than the inner diameter of the filling hollow shaft 306, thereby forming a filling cavity 308 between the outer wall of the filling drive shaft 307 and the inner wall of the filling hollow shaft 306. The filling cavity 308 is connected to the output end of the material supply system 8 through a hose assembly, thereby conveying liquid into the filling cavity 308 through the material supply system 8. The bottom of the filling hollow shaft 306 is provided with an opening communicating with the filling cavity 308, thereby forming a filling port 309 for the liquid to flow out of the filling cavity 308. Two third cylinders 301, symmetrically arranged opposite to the filling hollow shafts 306, are fixed to the bottom of the second lifting plate 302. The output ends of the two third cylinders 301 are simultaneously connected to the filling chamber mechanism 1. The two third cylinders 301 simultaneously drive the second lifting plate 302 to move linearly in the vertical direction, thereby causing the filling port 309 to insert into or exit the corresponding bag opening. A filling cylinder assembly is fixed to the outer top wall of the filling hollow shaft 306. The output end of the filling cylinder assembly is connected to the filling drive shaft 307. A material blocking sealing ring 310 is fitted on the outer circumferential surface of the end of the filling drive shaft 307. The filling cylinder assembly drives the filling drive shaft 307 to move linearly upward or downward relative to the filling hollow shaft 306 in the vertical direction, thereby causing the filling port 309 to open or close through the material blocking sealing ring 310. By setting the filling mechanism 3, which controls the stroke of the filling cylinder assembly based on time parameters, high-precision filling can be achieved.

[0065] In a single filling mechanism 3, the filling cylinder assembly includes a first filling cylinder 303 and a second filling cylinder 304 arranged in series in a vertical direction. By controlling the extension or retraction of the piston rods of the first filling cylinder 303 and the second filling cylinder 304, the gap distance between the inner wall of the filling port 309 and the outer circumferential surface of the filling drive shaft 307 is adjusted, thereby adjusting the flow rate of liquid flowing out of the filling port 309. In this utility model, the filling mechanism 3 has a high flow rate working mode and a low flow rate working mode. In the high flow rate working mode, both the first filling cylinder 303 and the second filling cylinder 304 are retracted; in the low flow rate working mode, one filling cylinder is extended and the other filling cylinder is retracted; when both the first filling cylinder 303 and the second filling cylinder 304 are extended, the filling port 309 is blocked by the blocking sealing ring 310 and the filling drive shaft 307, and is in a closed state.

[0066] like Figures 1-2As shown, a single aseptic filling station also includes a bag-pressing mechanism 6. The bag-pressing mechanism 6 is used to press the packaging bag body outside the corresponding filling chamber mechanism 1, thereby preventing steam inside the filling chamber mechanism 1 from entering the packaging bag. The structure of the bag-pressing mechanism 6 includes a bag-pressing cylinder 601 fixed on the frame 10. The output end of the bag-pressing cylinder 601 is connected to a pressing block 602. The bag-pressing cylinder 601 extends, thereby driving the pressing block 602 to make a linear movement close to the outer bottom wall of the corresponding filling chamber mechanism 1, thus pressing the packaging bag body. By setting the bag-pressing mechanism 6, positive pressure steam in the cavity before filling after the packaging bag is opened can be prevented from entering the packaging bag, thereby avoiding affecting filling accuracy and effectively improving the consistency of product weight after filling.

[0067] In this invention, an operating table 11 is arranged above a single bag-pressing mechanism 6. The single operating table 11 is installed on the frame 10 by several Phillips head bolts, which facilitates the adjustment of the installation height and angle of the operating table 11 to match different specifications (such as 1L, 5L, 10L, etc.) of packaging bags. A button assembly 12 is installed on the single operating table 11. The button assembly 12 is used to control the action of the bag-pressing cylinder 601. When the button assembly 12 is pressed, the bag-pressing cylinder 601 extends to press the packaging bag body. Based on a safety control mechanism, the button assembly 12 will only activate the bag-pressing cylinder 601 when the operator presses the corresponding two buttons in the button assembly 12 with both hands at the same time, thereby effectively avoiding safety accidents caused by misoperation.

[0068] In addition, at least one cooling fan 13 is also installed on the frame 10 to accelerate the rapid discharge of steam inside and outside the filling equipment, thereby avoiding the generation of excess condensate inside the filling equipment; an electrical control box 4 is also installed on the frame 10 to realize the automatic control of the internal components of the filling equipment.

[0069] The filling equipment of this utility model provides liquid material through the material supply system 8, such as... Figure 8 As shown, the material supply system 8 includes a first main pipe 801 and a second main pipe 802. An electromagnetic flow meter 809 is installed on the first main pipe 801. A pneumatic shut-off valve 807 and a pneumatic butterfly valve 810 are installed on the second main pipe 802 at intervals. The second main pipe 802 is connected to a connecting branch pipe 808 through the pneumatic shut-off valve 807. The end of the connecting branch pipe 808 is connected to the first main pipe 801.

[0070] The end of the first main pipe 801 is connected to an array of branch pipes in parallel. Each branch pipe is set up in a corresponding manner with an aseptic filling station. In this utility model, two aseptic filling stations are arranged. Correspondingly, the first branch pipe 803 and the second branch pipe 804 are arranged. The first branch pipe 803 connects the first main pipe 801 to the filling chamber 308 in one aseptic filling station, and the second branch pipe 804 connects the first main pipe 801 to the filling chamber 308 in the other aseptic filling station.

[0071] Correspondingly, the end of the second main pipe 802 is connected in parallel with the third branch pipe 805 and the fourth branch pipe 806. When the filling equipment is cleaned after completing its operation, the third branch pipe 805 is connected to the center hole in one aseptic filling station, and the fourth branch pipe 806 is connected to the center hole in another aseptic filling station, thereby realizing the circulation and discharge of the cleaning fluid in the corresponding cavity.

[0072] The filling equipment of this utility model provides high-temperature steam through the steam supply system 9, such as... Figure 9 As shown, the steam supply system 9 includes a main steam supply pipe 901. Y-type filters 902, pressure reducing valves 903, and several pressure gauges are installed on the main steam supply pipe 901 at intervals. The end of the main steam supply pipe 901 is connected to the inlet of a distribution cylinder 912, which is equipped with at least six steam injection ports. Figure 9 (Only three are shown), the six steam injection ports are divided into two groups of three, which provide steam to the two aseptic filling stations respectively;

[0073] For a single aseptic filling station, the first steam injection port of the cylinder 912 is connected to the first steam passage hole on the filling hollow shaft 306 through the fifth branch pipe 905. The filling hollow shaft 306 and the filling sleeve 305 are simultaneously provided with second steam passage holes. The second steam passage hole is connected to one end of the tenth branch pipe 910. The second steam passage hole is arranged below the first steam passage hole. Both the first steam passage hole and the second steam passage hole are located outside the cavity.

[0074] Steam is injected through the fifth branch pipe 905 and the first steam passage hole into the gap between the inner wall of the filling hollow shaft 306 and the outer wall of the filling drive shaft 307, and into the gap between the outer wall of the filling hollow shaft 306 and the inner wall of the filling sleeve 305, thereby forming a steam barrier in the gap to prevent dust and impurities from outside the cavity from entering the cavity and contaminating the filling process; the steam in the gap is discharged to the outside of the filling equipment through the second steam passage hole and the tenth branch pipe 910.

[0075] A temperature sensor is installed on the tenth branch pipe 910 with the help of a temperature measuring base. By setting the temperature sensor, it is possible to provide feedback on whether the steam barrier is in a high-temperature sterile state.

[0076] The second steam injection port of the distribution cylinder 912 is connected to the first steam inlet on the side plate of the cavity via the sixth branch pipe 906, and the third steam injection port of the distribution cylinder 912 is connected to the second steam inlet on the side plate of the cavity via the seventh branch pipe 907. The distribution cylinder 912 injects steam into the cavity through the sixth branch pipe 906 and the first steam inlet, thereby creating a sterile environment in the cavity. A guide pipe is installed inside the second steam inlet on the side plate of the cavity, with the end of the guide pipe facing the filling port 309, so that the distribution cylinder 912 injects steam into the filling port 309 through the seventh branch pipe 907, the second steam inlet, and the guide pipe, further improving product quality.

[0077] A ninth branch pipe 909 is installed at the condensate outlet of the air distribution cylinder 912. A drain valve 904 is installed on the ninth branch pipe 909 to drain the condensate in the air distribution cylinder 912.

[0078] A water outlet is provided on the bottom plate of the cavity, and an eighth branch pipe 908 is installed at the water outlet. A vacuum generator 913 is installed on the eighth branch pipe 908. The compressed air inlet of the vacuum generator 913 is connected to a compressed air source through a supply branch pipe 911. The compressed air source is the vacuum generator 913, which uses compressed air to draw out the condensate in the cavity through the eighth branch pipe 908 based on the Venturi principle.

[0079] In this utility model, each pipeline in the material supply system 8 and the steam supply system 9 can be formed by splicing several short pipes or by using long pipes, depending on the specific usage and installation requirements. In addition, each pipeline is equipped with a corresponding control valve assembly, which is configured according to the actual production requirements.

[0080] The working process of this utility model is as follows:

[0081] First, a sterilization operation is performed. High-temperature steam of not less than 95°C is introduced into the cavity through the steam supply system 9 and maintained for a period of time (about 30 minutes) to sterilize the conveying pipeline and the internal environment of the cavity, thereby creating the sterile environment required for filling liquid materials.

[0082] After sterilization, the filling operation is carried out. The operator places the packaging bag on the workbench 11 and makes the bag opening (with a sealing cap) extend into the cavity through the central hole. After it is placed in place, the operator controls the bag pressing cylinder 601 to extend through the button assembly 12, so that the pressing block 602 presses the bag body located outside the cavity tightly.

[0083] Subsequently, the two first cylinders 101 are activated, and the movable top plate 102 drives the cap removal mechanism 2 to move linearly in the horizontal direction, thereby aligning the gripper assembly with the center hole, and then the cap removal mechanism 2 removes the sealing cap.

[0084] Next, the two first cylinders 101 are started, and the filling mechanism 3 is driven to move in a straight line in the horizontal direction through the movable top plate 102, so that the filling port 309 is aligned with the center hole, and then the material supply system 8 fills the packaging bag with liquid material through the filling mechanism 3.

[0085] Then, the two first cylinders 101 are started, and the cap removal mechanism 2 is driven to move in a straight line in the horizontal direction again through the movable top plate 102, so that the gripper assembly is aligned with the center hole again, and then the cap removal mechanism 2 inserts the sealing cap into the bag opening to seal it.

[0086] Finally, the operator controls the bag-pressing cylinder 601 to retract via the button assembly 12, thereby removing the filled packaging bag;

[0087] Repeat the above steps until all packaging bags have been filled.

[0088] After filling, a cleaning operation is performed, such as... Figure 8 As shown, under the action of the pneumatic shut-off valve 807, the cleaning fluid enters the first main pipe 801 through the second main pipe 802 and the connecting branch pipe 808 in sequence, and then enters the corresponding cavity through the first branch pipe 803 and the second branch pipe 804 respectively.

[0089] After cleaning, the waste liquid in the two chambers flows back to the second main pipe 802 through the third branch pipe 805 and the fourth branch pipe 806 respectively. Under the action of the pneumatic shut-off valve 807, the waste liquid in the second main pipe 802 is discharged.

[0090] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. An aseptic filling device, characterized in that: The system includes a frame (10) on which at least one aseptic filling station is provided. Each aseptic filling station includes a filling chamber mechanism (1). The bottom of the filling chamber mechanism (1) has a central hole for engaging with the opening of a packaging bag, so that the opening of the packaging bag and the sealing cap installed on the opening can enter the interior of the filling chamber mechanism (1). The filling chamber mechanism (1) is equipped with a cap removal mechanism (2) and a filling mechanism (3). The cap removal mechanism (2) is used to remove the sealing cap from the opening of the bag or to insert the sealing cap into the opening of the bag. The filling mechanism (3) is used to quantitatively fill the packaging bag with liquid material through the opening of the bag.

2. The aseptic filling equipment as described in claim 1, characterized in that: In a single aseptic filling station, when it is necessary to remove or insert a sealing cap, the filling chamber mechanism (1) drives the cap removal mechanism (2) to align with the center hole, and when it is necessary to fill, the filling chamber mechanism (1) drives the filling mechanism (3) to align with the center hole.

3. The aseptic filling equipment as described in claim 2, characterized in that: The structure of a single filling chamber mechanism (1) is as follows: it includes a hollow cavity, a fixed top plate (103) is provided on the top of the cavity, a movable top plate (102) is installed on the top of the fixed top plate (103), and a cap-removing mechanism (2) and a filling mechanism (3) are installed on the movable top plate (102). The top of the fixed top plate (103) is fixed with oppositely arranged first cylinders (101). The output ends of the two first cylinders (101) are simultaneously connected to the movable top plate (102). The two first cylinders (101) drive the movable top plate (102) to reciprocate linearly in the horizontal direction, thereby driving the cap removal mechanism (2) and the filling mechanism (3) to reciprocate linearly in the horizontal direction.

4. The aseptic filling equipment as described in claim 3, characterized in that: For a single filling chamber mechanism (1), a bag clamping mechanism (5) is installed on the opposite side walls of the cavity. The two bag clamping mechanisms (5) operate simultaneously to clamp or release the bag opening that extends into the cavity through the central hole. The structure of a single bag clamping mechanism (5) is as follows: it includes a fourth cylinder (501), the output end of which is connected to a clamping plate (502).

5. The aseptic filling equipment as described in claim 3, characterized in that: For a single filling chamber mechanism (1), a sensor assembly (7) is installed on one side wall of the chamber, the sensor assembly (7) being used to detect whether a sealing cap is installed on the bag opening.

6. The aseptic filling equipment as described in claim 1, characterized in that: The structure of a single cap-removing mechanism (2) is as follows: it includes a cap-removing hollow shaft (206), a cap-removing drive shaft (207) is concentrically mounted in the middle of the cap-removing hollow shaft (206), a gripper assembly is hinged to the end of the cap-removing drive shaft (207), the gripper assembly has several grippers (208), each gripper (208) is also hinged to a mounting base (209), the mounting base (209) is fixed to the end of the cap-removing hollow shaft (206), and a top block (210) is fixed to the outer bottom wall of the mounting base (209); A first lifting plate (204) is fitted on the outer circumference of the cap-removing hollow shaft (206). Two cap-pressing cylinders (202) are fixed on the top of the first lifting plate (204). The two cap-pressing cylinders (202) are symmetrically arranged relative to the cap-removing hollow shaft (206). The output end of a single cap-pressing cylinder (202) is connected to a second cylinder (201), and the output end of a single second cylinder (201) is connected to the filling chamber mechanism (1). The top of the first lifting plate (204) is fixed with a cap-removing cylinder (203), and the output end of the cap-removing cylinder (203) is connected to the cap-removing drive shaft (207). The cap removal cylinder (203) drives the cap removal transmission shaft (207) to reciprocate linearly in the vertical direction relative to the cap removal hollow shaft (206), thereby causing the single gripper (208) to rotate around the hinge point with the mounting base (209), thereby causing the gripper assembly to clamp or release the sealing cap. When the sealing cap is pulled out of the bag opening, the two second cylinders (201) simultaneously drive the first lifting plate (204) to move in the vertical direction, thereby driving the gripper assembly to move in a straight line in the vertical direction through the cap-pulling hollow shaft (206), and then pulling the sealing cap out of the bag opening through the gripper assembly; When the sealing cap is inserted into the bag opening, the two second cylinders (201) simultaneously drive the first lifting plate (204) to move in the vertical direction. The cap-pulling hollow shaft (206) drives the gripper assembly to put the sealing cap into the corresponding bag opening. Then, the two cap-pressing cylinders (202) simultaneously drive the first lifting plate (204) to move in the vertical direction, thereby driving the top block (210) through the cap-pulling hollow shaft (206) to press the sealing cap into the corresponding bag opening.

7. The aseptic filling equipment as described in claim 6, characterized in that: In a single cap removal mechanism (2), a cap removal sleeve (205) is fitted on the outer circumference of the cap removal hollow shaft (206), and the cap removal sleeve (205) is fixed to the top of the filling chamber mechanism (1).

8. The aseptic filling equipment as described in claim 1, characterized in that: The structure of a single filling mechanism (3) is as follows: it includes a second lifting plate (302) arranged above the outside of the filling chamber mechanism (1). The second lifting plate (302) is fixed on the outer circumferential surface of the filling hollow shaft (306). A filling drive shaft (307) is concentrically installed in the middle of the filling hollow shaft (306). The diameter of the filling drive shaft (307) is smaller than the inner diameter of the filling hollow shaft (306), so that on the outside of the filling drive shaft (307)... A filling cavity (308) is formed between the wall surface and the inner wall surface of the filling hollow shaft (306). The filling cavity (308) is connected to the output end of the material supply system (8) through a hose assembly, so that liquid material is delivered into the filling cavity (308) through the material supply system (8). The bottom of the filling hollow shaft (306) is provided with an opening communicating with the filling cavity (308), thereby forming a filling port (309) that allows the liquid material to flow out of the filling cavity (308). The bottom of the second lifting plate (302) is fixed with two third cylinders (301) symmetrically arranged opposite to the filling hollow shafts (306). The output ends of the two third cylinders (301) are simultaneously connected to the filling chamber mechanism (1). The two third cylinders (301) simultaneously drive the second lifting plate (302) to move linearly in the vertical direction, so that the filling port (309) is inserted into or removed from the corresponding bag opening. A filling cylinder assembly is fixed on the outer top wall of the filling hollow shaft (306). The output end of the filling cylinder assembly is connected to the filling drive shaft (307). A material blocking seal ring (310) is fitted on the outer circumferential surface of the end of the filling drive shaft (307). The filling cylinder assembly drives the filling drive shaft (307) to move vertically upward or downward relative to the filling hollow shaft (306), thereby opening or closing the filling port (309) through the material blocking seal ring (310).

9. The aseptic filling equipment as described in claim 8, characterized in that: In a single filling mechanism (3), the filling cylinder assembly includes a first filling cylinder (303) and a second filling cylinder (304) arranged in series in the vertical direction. By controlling the piston rod of the first filling cylinder (303) and the piston rod of the second filling cylinder (304) to extend or retract, the gap distance between the inner wall of the filling port (309) and the outer circumferential surface of the filling drive shaft (307) is adjusted, thereby adjusting the flow rate of liquid flowing out through the filling port (309).

10. The aseptic filling equipment as described in claim 1, characterized in that: Each aseptic filling station also includes a bag pressing mechanism (6), which is used to press the packaging bag body outside the corresponding filling chamber mechanism (1) to prevent steam inside the filling chamber mechanism (1) from entering the packaging bag; The structure of the bag pressing mechanism (6) is as follows: it includes a bag pressing cylinder (601) fixed on the frame (10). The output end of the bag pressing cylinder (601) is connected to the pressing block (602). The bag pressing cylinder (601) extends out, thereby driving the pressing block (602) to make a linear movement close to the outer bottom wall of the corresponding filling chamber mechanism (1), and then pressing the packaging bag body through the pressing block (602).

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