A lyophilizer gland assembly

Abstract

The utility model provides a freeze dryer gland assembly. Freeze dryer gland assembly includes casing, gland mechanism and drive mechanism, the gland mechanism includes from top to bottom setting n shelf, n>=2, the power output end of drive mechanism is adapted to one the shelf, drive mechanism is used for driving n-1 shelf displacement, the rest one shelf not being driven by drive mechanism and the casing connection forms first shelf, n the both sides of the shelf are equipped with support plate, the both ends of n-1 shelf except first shelf are all connected with limit pin, be equipped with with the limit platform of one -to -one correspondence with the limit pin of same side on support plate, when drive mechanism drives n-1 shelf mutually close, limit pin is separated from limit platform, when drive mechanism drives n-1 shelf mutually far away, limit pin and limit platform contact limit. The utility model realizes mechanical limit to the shelf of movement, guarantees each shelf reset position accurate, is favorable for taking and placing the penicillin bottle.

Description

Technical Field

[0001] This utility model relates to the field of freeze dryer technology, and in particular to a freeze dryer capping assembly. Background Technology

[0002] Freeze dryers are widely used in the drying process of biological pharmaceuticals. Biological pharmaceuticals are typically packaged in vials with rubber stoppers. Freeze dryers are used to freeze-dry these vials, evaporating the moisture from the mixture inside and sealing the vials to effectively prevent contamination. When drying the contents of vials, freeze dryers usually place the vials on a tray. Therefore, freeze dryers generally require a capping mechanism.

[0003] Existing freeze dryers, such as the biopharmaceutical capping freeze dryer disclosed in patent publication number CN222418249U, use a drive motor to rotate a reciprocating screw, which moves a cap plate downwards to cap vials located on a placement tray. A placement groove is formed on the upper surface of the tray to hold the vials, and a clamping unit inside the groove is used to fix and hold the vials in place, preventing the vials from shifting or tipping over during capping and avoiding leakage of the material inside the vials. This method uses a screw to drive the displacement of the placement tray, and the position of the placement tray is also locked by the screw. On the one hand, each placement tray needs to be connected to the screw, requiring high precision in the tray manufacturing process; on the other hand, it requires the use of precision screws and servo motors, resulting in high costs. Furthermore, the position of the placement tray is limited by the screw, lacking a mechanical locking structure.

[0004] Another existing patent, CN216924931U, discloses a capping mechanism and freeze dryer that uses a drive mechanism located above the housing to press down, causing each layer to move downwards under gravity, thus achieving the capping process. After completion, the drive mechanism moves upwards, lifting the layers. This simplifies the layer installation structure by eliminating the need for a lead screw. However, layer resetting is achieved through the drive mechanism, and similarly, no specific device is provided. Utility Model Content

[0005] The purpose of this invention is to provide a freeze dryer capping assembly that can effectively limit the position of each shelf after it has been reset.

[0006] The technical solution of this utility model is: a freeze dryer capping assembly, including a housing, a capping mechanism disposed within the housing, and a driving mechanism mounted on the side wall of the housing. The capping mechanism includes n shelves arranged from top to bottom, where n≥2. The power output end of the driving mechanism is adapted to one of the shelves. The driving mechanism is used to drive the n-1 shelves to move up and down. The remaining shelf, which is not driven by the driving mechanism, is connected to the housing to form a first shelf. The feature is that it also includes support plates disposed on both sides of the n shelves. The two ends of the n-1 shelves, except for the first shelf, are connected to limit pins. The support plates are provided with limit platforms corresponding one-to-one with the limit pins on the same side. When the driving mechanism drives the n-1 shelves to move closer together, the limit pins disengage from the limit platforms. When the driving mechanism drives the n-1 shelves to move away from each other, the limit pins contact and limit the limit platforms.

[0007] Preferably, the freeze-drying process further includes guide shafts disposed on both sides of the n shelves, the upper and lower ends of the guide shafts being connected to the housing, and one end of the support plate being connected to the guide shaft; each shelf has a guide block on its end side that is adapted to the guide shaft.

[0008] Preferably, the shelf on the same side is provided with at least two support plates and at least two corresponding limiting pins.

[0009] Preferably, the drive mechanism is mounted on the bottom wall of the housing, and the drive mechanism is adapted to the lowest shelf.

[0010] Preferably, the drive mechanism includes a drive source having a cylinder and a telescopic rod, and a top plate connected to the end of the telescopic rod. The top plate is connected to or in contact with the shelf, and the cylinder is mounted on the bottom wall of the housing.

[0011] Preferably, the driving source is a hydraulic cylinder.

[0012] Preferably, the first shelf is provided with a connecting cylinder, which is connected to the top wall of the housing.

[0013] Preferably, each shelf is connected to a manifold on at least one side, and multiple manifolds on the same side of the shelf are connected by a silicone oil pipe, with the end of the silicone oil pipe away from the manifold extending to the outside of the housing.

[0014] Preferably, the outer bottom of the housing is provided with multiple supports.

[0015] Preferably, the outer surface of the shell is surrounded by a plurality of stiffening plates.

[0016] Compared with related technologies, the beneficial effects of this utility model are as follows: I. This utility model provides limit pins on both sides of the shelf and a support plate on the side. The support plate is provided with a limiting platform that matches the limit pins. When the drive mechanism drives the shelves to move away from each other, the limit pins contact the limiting platform to achieve mechanical limiting, ensuring that the reset position of each shelf is accurate and facilitating the handling of vials. In addition, this newly added mechanical limiting structure can improve the reliability of the capping process. Second, this utility model also provides guide blocks on both sides of the shelf and a guide shaft on the side. When the shelf moves up and down, the guide blocks are adapted to the guide shaft to achieve the guiding function and ensure the smooth movement of the shelf. Third, this utility model installs the support plate on the guide shaft, and the guide shaft is installed on the housing, which reduces the number of installation positions of the support plate on the housing. It can connect the support plate and the guide shaft together offline before installation, simplifying the online installation process. Fourth, this utility model installs the drive mechanism at the lower part of the housing. The drive mechanism rises to press the cover and falls to release the shelf. The shelf can be smoothly reset by gravity and quickly reset under the limiting action of the limiting pin and the support plate, which is more efficient. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of the freeze dryer capping assembly provided by this utility model; Figure 2 A front view structural diagram of the freeze dryer capping assembly provided by this utility model; Figure 3 This is a schematic diagram of the capping mechanism and the drive mechanism; Figure 4 This is a schematic diagram of the cap.

[0018] In the attached diagram: 1. Shell; 11. Support; 12. Rib plate; 2. Capping mechanism; 20. Shelf; 21. First shelf; 211. Connecting cylinder; 22. Second shelf; 221. First limiting pin; 23. Third shelf; 231. Second limiting pin; 24. Support plate; 241. First limiting platform; 242. Second limiting platform; 25. Guide shaft; 26. Guide block; 27. Manifold; 28. Silicone oil pipe; 29. ​​Limiting pin; 210. Limiting platform; 3. Drive mechanism; 31. Drive source; 32. Top plate; 4. Vial. Detailed Implementation

[0019] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0020] like Figure 1 , Figure 2 As shown, the freeze dryer capping assembly provided in this embodiment includes a housing 1, a capping mechanism 2 disposed within the housing 1, and a drive mechanism 3 mounted on the side wall of the housing 1. The capping mechanism 2 includes n shelves 20 arranged from top to bottom, where n ≥ 2. The power output end of the drive mechanism 3 is adapted to one of the shelves 20. The drive mechanism 3 is used to drive n-1 shelves 20 to move up and down. The remaining shelf 20, which is not driven by the drive mechanism 3, is connected to the housing 1 to form a first shelf 21. The number of shelves 20 can be set to multiple according to actual needs.

[0021] In this embodiment, there are three shelves 20, namely, a first shelf 21, a second shelf 22, and a third shelf 23 from top to bottom. A connecting cylinder 211 is provided on the first shelf 21, and the connecting cylinder 211 is connected to the top wall of the housing 1. Both ends of the connecting cylinder 211 are provided with internal threads, and are connected to the first shelf 21 and the housing 1 respectively by bolts.

[0022] Support plates 24 and guide shafts 25 are provided on both sides of each of the n shelves 20. The support plates 24 and guide shafts 25 are spaced apart from the shelves 20. The two ends of the guide shafts 25 are connected to the top wall of the housing 1. One end of the support plate 24 is connected to the guide shaft 25. Limiting pins 29 are connected to both ends of the n-1 shelves 20 except for the first shelf 21. The support plate 24 is provided with limiting platforms 210 that correspond one-to-one with the limiting pins 29 on the same side.

[0023] like Figure 3 As shown, the two sides of the second shelf 22 (as shown) Figure 2 Both sides (shown) are connected to a first limiting pin 221, with two first limiting pins 221 arranged front and back on the same side. Both sides of the third shelf 23 are connected to a second limiting pin 231, with two second limiting pins 231 arranged front and back on the same side. Each limiting pin 29 corresponds to a support plate 24, and also corresponds to a guide shaft 25 and a guide block 26. The guide block 26 is bolted to the end side of the shelf 20, and the guide block 26 has a groove adapted to the guide shaft 25.

[0024] The support plate 24 has a first limiting platform 241 and a second limiting platform 242 at the end away from the guide shaft 25. The first limiting platform 241 is located above the second limiting platform 242. The second limiting platform 242 and the first limiting platform 241 are horizontally offset. When the limiting pin 29 falls onto the corresponding limiting platform 210, the lower limit is achieved, and the shelf 20 stops falling.

[0025] Each shelf 20 is connected to a manifold 27 on both its left and right sides. Three manifolds 27 on the same side are connected to a single silicone oil pipe 28. The end of the silicone oil pipe 28 furthest from the manifold 27 extends from the back wall of the housing 1 to the outside of the housing 1. A heat exchange medium (such as silicone oil) is supplied to the shelf 20 through the silicone oil pipe 28 and the manifold 27. The silicone oil within the shelf 20 is then circulated through a plate heat exchanger and a circulation pump for cooling or heating.

[0026] The shell 1 is open on one side and enclosed on the rest. The outer bottom of the shell 1 is provided with multiple supports 11. Multiple stiffening plates 12 are provided on the outer surface of the shell 1.

[0027] The drive mechanism 3 includes a drive source 31 with a cylinder and a telescopic rod, and a top plate 32 connected to the end of the telescopic rod. The drive source 31 is a hydraulic cylinder. The top plate 32 is connected to or in contact with the third shelf 23, and the cylinder is mounted on the bottom wall of the housing 1.

[0028] In use, multiple vials 4 are placed on the second shelf 22 and the third shelf 23. The drive source 31 is activated, lifting the top plate 32, causing the third shelf 23 to lift the vials 4 on it. When the vials 4 on the third shelf 23 come into contact with the second shelf 22, the drive source 31 pushes the second shelf 22 and the vials 4 on it upwards until the vials 4 on the second shelf 22 contact the first shelf 21. The first shelf 21, fixedly connected to the housing 1, applies pressure to the vials 4 on the second shelf 22 and transmits this pressure to the vials 4 on the third shelf 23, capping all the vials 4 (e.g., ...). Figure 4 (As shown). At this time, each limit pin 29 disengages from the limit platform 210.

[0029] After the capping is completed, the drive source 31 is released, the telescopic rod and top plate 32 are retracted, the pressure is released, and the third shelf 22 and the second shelf 23 fall with their own weight until the second limit pin 231 lands on the second limit platform 242 and the first limit pin 221 lands on the first limit platform 241. One capping action is completed.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A freeze dryer capping assembly, comprising a housing (1), a capping mechanism (2) disposed within the housing (1), and a drive mechanism (3) mounted on the side wall of the housing (1), wherein the capping mechanism (2) comprises n shelves (20) arranged from top to bottom, n≥2, the power output end of the drive mechanism (3) is adapted to one of the shelves (20), the drive mechanism (3) is used to drive n-1 shelves (20) to move up and down, and the remaining shelf (20) not driven by the drive mechanism (3) is connected to the housing (1) to form a first shelf (21), characterized in that, It also includes support plates (24) set on both sides of the n shelves (20). Except for the first shelf (21), the two ends of the n-1 shelves (20) are connected to limit pins (29). The support plates (24) are provided with limit platforms (210) corresponding to the limit pins (29) on the same side. When the driving mechanism (3) drives the n-1 shelves (20) to move closer to each other, the limit pins (29) disengage from the limit platforms (210). When the driving mechanism (3) drives the n-1 shelves (20) to move away from each other, the limit pins (29) contact the limit platforms (210) for limitation.

2. The freeze dryer capping assembly according to claim 1, characterized in that, It also includes guide shafts (25) set on both sides of the n shelves (20), the upper and lower ends of the guide shafts (25) are connected to the housing (1), and one end of the support plate (24) is connected to the guide shafts (25); each shelf (20) has a guide block (26) on its end side that is adapted to the guide shaft (25).

3. The freeze dryer capping assembly according to claim 1, characterized in that, The shelf (20) on the same side is provided with at least two support plates (24) and at least two corresponding limit pins (29).

4. The freeze dryer capping assembly according to claim 1, characterized in that, The drive mechanism (3) is installed on the bottom wall of the housing (1) and is adapted to the bottom shelf (20).

5. The freeze dryer capping assembly according to claim 4, characterized in that, The drive mechanism (3) includes a drive source (31) having a cylinder and a telescopic rod, and a top plate (32) connected to the end of the telescopic rod. The top plate (32) is connected to or in contact with the shelf (20), and the cylinder is mounted on the bottom wall of the housing (1).

6. The freeze dryer capping assembly according to claim 5, characterized in that, The drive source (31) is a hydraulic cylinder.

7. The freeze dryer capping assembly according to claim 1, characterized in that, The first shelf (21) is provided with a connecting cylinder (211), which is connected to the top wall of the housing (1).

8. The freeze dryer capping assembly according to claim 1, characterized in that, Each shelf (20) is connected to a manifold (27) on at least one side. Multiple manifolds (27) on the same side of the shelf (20) are connected by a silicone oil pipe (28), with the end of the silicone oil pipe (28) away from the manifold (27) extending to the outside of the housing (1).

9. The freeze dryer capping assembly according to claim 1, characterized in that, The outer bottom of the housing (1) is provided with multiple supports (11).

10. The freeze dryer capping assembly according to claim 1, characterized in that, The outer surface of the shell (1) is surrounded by a plurality of stiffening plates (12).

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