CN-122009592-A - Vacuum filling system

CN122009592ACN 122009592 ACN122009592 ACN 122009592ACN-122009592-A

Abstract

The application relates to a vacuum filling system, which comprises a filling assembly fixedly arranged, a bracket arranged below the filling assembly and a sealing sleeve coaxially arranged between the bracket and the filling assembly and capable of lifting. And the bracket continuously ascends to push the sealing sleeve to enable the upper end of the sealing sleeve to be matched with the filling assembly to form a second seal, so that a sealed filling cavity is formed among the packing material, the sealing sleeve and the filling assembly. In the whole filling and packaging material lifting process, the filling needle is kept still all the time. According to the application, the packing material actively lifts and fits with the friction-free sealing structure, so that particle pollution caused by pipeline deformation and relative sliding friction is avoided, the packing material is separated from the weighing device when being supported, stress interference is eliminated, and the in-situ online weighing precision is ensured.

Inventors

LU ZHONGMENG
WANG LISHENG
WANG KAN

Assignees

穆恩制药设备(杭州)有限公司

Dates

Publication Date: 20260512
Application Date: 20260416

Claims (10)

1. A vacuum filling system, comprising: The filling assembly is fixedly arranged at the position; The bracket is arranged below the filling assembly and is used for supporting the packing material and driving the packing material to lift along the vertical direction; The sealing sleeve is coaxially arranged between the bracket and the filling assembly and can be lifted along the vertical direction, and the lower end of the sealing sleeve is provided with a sealing body which is used for being abutted with the opening of the packing material; In the process of lifting the sealing sleeve, the upper end of the sealing sleeve is matched with a corresponding sealing part of the filling assembly to form a second seal so as to form a sealed filling cavity among the packing material, the sealing sleeve and the filling assembly.
2. The vacuum filling system according to claim 1, wherein the sealing body is a flexible material or a material having elastic deformability.
3. The vacuum filling system of claim 1, further comprising a first lift drive mechanism in driving connection with the sealing sleeve for driving the sealing sleeve to lift in a vertical direction and a second lift drive mechanism in driving connection with the carriage for driving the carriage to lift in a vertical direction.
4. The vacuum filling system according to claim 3, wherein the first lifting driving mechanism comprises a first lifting shaft, the second lifting driving mechanism comprises a second lifting shaft, the second lifting shaft is a hollow shaft, the first lifting shaft is arranged in an inner cavity of the second lifting shaft in a penetrating manner, and the first lifting shaft and the second lifting shaft are coaxially arranged.
5. The vacuum filling system according to claim 1, wherein the filling assembly comprises a filling needle and a needle sleeve sleeved outside the filling needle, the upper end of the sealing sleeve and the needle sleeve are in mechanical plug-in fit without elastic sealing elements to form the second seal, and the packing opening and the sealing body are in end face abutting fit to form the first seal.
6. The vacuum filling system of claim 4, wherein the lower end of the filling needle extends downwardly and, in the state in which the first seal and the second seal are formed, the lower end of the filling needle passes through the inner cavity of the sealing sleeve and protrudes into the interior of the wrapper.
7. The vacuum filling system according to claim 1, wherein a vacuum-pumping channel is provided on a side wall of the sealing sleeve, one end of the vacuum-pumping channel is communicated to the filling chamber, and the other end is used for externally connecting negative pressure equipment.
8. The vacuum filling system according to claim 1, further comprising a weighing device disposed below the bracket, the bracket having a low evacuation position and a high sealing position in abutment with the sealing body, wherein the packing material is supported on a bearing surface of the weighing device when the bracket is in the low evacuation position and is separated from the packing material, and wherein the bracket contacts and lifts up the packing material when the bracket moves upward from the low evacuation position to the high sealing position, leaving the packing material in a state of being disengaged from the weighing device.
9. A filling method applied to a vacuum filling system according to any one of claims 1 to 8, comprising the steps of: S1, controlling a bracket to drive a packing material to ascend, so that an opening of the packing material is abutted with a sealing body at the lower end of a sealing sleeve to form a first seal; S2, controlling the sealing sleeve to ascend until the upper end of the sealing sleeve is matched with a filling assembly fixedly arranged to form second sealing; s3, maintaining a filling needle in the filling assembly in a static state under the state that the first seal and the second seal are formed, and injecting liquid medicine into the packaging material through the filling needle; and S4, after filling, controlling the bracket to descend and reset, so that the packing material descends and is separated from the sealing body.
10. The filling method of claim 9, wherein the vacuum filling system further comprises a weighing device; Before the step S1, the bracket is in an avoidance low position, the packing material is supported on the weighing device, and empty bottle weighing is completed; in steps S1 and S2, the carrier is raised and the package is lifted, so that the package is separated from the weighing device; after the step S4, the bracket descends to the avoidance low position, the packing material is supported on the weighing device again, and the weighing of the full bottle is completed.

Description

Vacuum filling system Technical Field The application relates to the technical field of pharmacy, in particular to a vacuum filling system. Background In the prior art, in liquid filling production lines requiring pharmaceutical, biomedical and high cleanliness, vacuum filling technology is widely used to ensure the stability and shelf life of the liquid medicine. When the conventional automatic vacuum filling system is used for filling, the packing material is conveyed to a station and kept still, the filling needle and the sealing cover on the outer side of the filling needle move downwards, and vacuumizing and liquid filling are carried out after the packing needle is in butt joint sealing with the opening of the packing material. However, this existing filling mode has the following obvious technical drawbacks in practical applications: firstly, in the process of frequently moving up and down, the upstream liquid supply hose connected with the filling needle can repeatedly bend and deform. The fatigue and aging of the pipeline are easy to cause, and the stress peeling of the inner wall of the pipeline can be caused, so that particles are generated to pollute the high-cleanliness liquid medicine. Secondly, the existing sealing cover and the filling assembly or the packing material are dynamically sealed by adopting elastic sealing elements such as O-shaped rings. In the process of lifting butt joint and separation, the sealing element inevitably generates relative sliding friction, particles generated by friction are very easy to fall into unsealed packaging materials, and the safety standard of sterile liquid medicine is seriously threatened. Disclosure of Invention In order to solve the problems, the application provides a vacuum filling system which reduces the risks of pipeline deformation and particle pollution. To achieve the above object, in a first aspect, a vacuum filling system according to an embodiment of the present application includes: The filling assembly is fixedly arranged at the position; The bracket is arranged below the filling assembly and is used for supporting the packing material and driving the packing material to lift along the vertical direction; The sealing sleeve is coaxially arranged between the bracket and the filling assembly and can be lifted along the vertical direction, and the lower end of the sealing sleeve is provided with a sealing body which is used for being abutted with the opening of the packing material; In the process of lifting the sealing sleeve, the upper end of the sealing sleeve is matched with a corresponding sealing part of the filling assembly to form a second seal so as to form a sealed filling cavity among the packing material, the sealing sleeve and the filling assembly. Preferably, the sealing body is made of flexible materials or materials with elastic deformation capability. Preferably, the lifting device further comprises a first lifting driving mechanism and a second lifting driving mechanism, wherein the first lifting driving mechanism is in transmission connection with the sealing sleeve and used for driving the sealing sleeve to lift in the vertical direction, and the second lifting driving mechanism is in transmission connection with the bracket and used for driving the bracket to lift in the vertical direction. Preferably, the first lifting driving mechanism comprises a first lifting shaft, the second lifting driving mechanism comprises a second lifting shaft, the second lifting shaft is a hollow shaft, the first lifting shaft penetrates through an inner cavity of the second lifting shaft, and the first lifting shaft and the second lifting shaft are coaxially arranged. Preferably, the filling assembly comprises a filling needle and a needle sleeve sleeved on the outer side of the filling needle, the upper end of the sealing sleeve is in mechanical plug-in fit with the needle sleeve without an elastic sealing element to form the second seal, and the packing opening is in end face butt fit with the sealing body to form the first seal. Preferably, the lower end of the filling needle extends downward, and in a state where the first seal and the second seal are formed, the lower end of the filling needle passes through the inner cavity of the seal sleeve and protrudes into the interior of the packing material. Preferably, a vacuumizing channel is formed in the side wall of the sealing sleeve, one end of the vacuumizing channel is communicated to the filling cavity, and the other end of the vacuumizing channel is used for being externally connected with negative pressure equipment. The weighing device is arranged below the bracket, the bracket is provided with a low avoidance position and a high sealing position abutting against the sealing body, when the bracket is in the low avoidance position, the packing material is supported on the bearing surface of the weighing device and separated from the packing material, and when the bracket moves up