Freeze-drying tray

Abstract

The utility model belongs to the technical field of freeze-drying process appliances, and particularly relates to a freeze-drying disc. Comprising a tray, the tray is provided with a frame, a semi-permeable membrane is arranged above the frame, the semi-permeable membrane completely covers an upper opening of the frame, and the edge of the semi-permeable membrane has allowance; an upper cover is arranged above the semi-permeable membrane, and a clamping assembly is arranged on the side surface of the upper cover; the clamping assembly comprises a pressing plate and a pressing strip, the pressing plate is hinged to the upper cover, the pressing strip is hinged to the upper cover, and the pressing strip presses the pressing plate to enable the pressing plate to extrude the semi-permeable membrane. On the premise that the semi-permeable membrane is fixed and the tray is sealed, a larger gap can be formed between the frame of the upper cover and the frame of the tray, so that the upper cover can be clamped conveniently, and the semi-permeable membrane tray is convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model belongs to freeze -drying process instrument technical field, concretely relates to a freeze -drying tray. BACKGROUND

[0002] In the pharmaceutical or biological field, some articles need to be obtained through vacuum freeze -drying technology, freeze -drying is a kind of drying technology using sublimation principle, the substance to be dried is placed in low temperature and freeze quickly, then in vacuum environment, frozen water molecules directly sublimate into water vapor, reach the purpose of drying. Freeze -drying tray is needed in the freeze -drying process, the article to be freeze -dried is placed in freeze -drying tray, then the freeze -drying tray is placed in freeze -drying machine and freeze -dried.

[0003] The existing freeze -drying tray is usually open tray, the vacuum degree is higher in freeze -drying process, and powder medicine is easy to splash, so that a small amount of powder is sucked into vacuum pump, increases the medicine loss, and the vacuum pump is easy to be contaminated, in addition, the article to be freeze -dried will also be contaminated. Therefore, people set sealing cover on the open freeze -drying tray to prevent the article from splashing, but a large amount of sublimation steam is generated in the process of vacuum drying, and the steam will not be discharged in time under the condition of external heating, which will cause the temperature in the tray to rise, the ice crystals in the freeze -drying substance to melt, and the freeze -drying process to be unable to carry out.

[0004] The prior art CN105806080A discloses a freeze -drying tray, which comprises a lower tray, and a semi -permeable membrane is arranged on the opening of the lower tray, and the semi -permeable membrane completely covers the opening of the lower tray. The freeze -drying tray can avoid the splashing of medicine, reduce the loss of medicine, prevent the contamination of the vacuum pump by powder, reduce the cleaning work of the freeze -drying machine, save labor time and improve the working efficiency of the freeze -drying machine under the condition of ensuring sufficient air permeability during freeze -drying. However, the freeze -drying tray needs to cooperate with the upper cover to fix the semi -permeable membrane during use, and the gap between the upper cover and the tray frame is required to be strict, otherwise the upper cover will not be easy to be clamped on the tray, which is not convenient to use and affects the use effect of the semi -permeable membrane. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems existing in the prior art, the utility model provides a freeze -drying tray.

[0006] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] A freeze -drying tray, comprising a tray, the tray has a frame, a semi -permeable membrane is arranged above the frame, the semi -permeable membrane completely covers the upper opening of the frame and has an excess margin at the edge, an upper cover is arranged above the semi -permeable membrane, a clamping assembly is arranged on the side surface of the upper cover, the clamping assembly comprises a pressing plate and a pressing strip, the pressing plate is hinged to the upper cover, the pressing strip is hinged to the upper cover, and the pressing strip presses the pressing plate to extrude the semi -permeable membrane.

[0008] Further, the rotation axis of the pressing plate is parallel to the frame surface, and the rotation axis of the pressing strip is perpendicular to the frame surface.

[0009] Further, the clamping assembly further comprises a rotating shaft arranged on the upper cover, and a rotating drum arranged at one end of the pressing plate and penetrating the rotating shaft.

[0010] Further, the upper cover is provided with a frame, the rotating shaft is arranged on the frame, and an opening is arranged on the frame corresponding to the position of the pressing plate.

[0011] Further, the frame is provided with a positioning column, and the pressing strip is rotationally connected with the positioning column.

[0012] Further, each clamping assembly comprises two pressing strips arranged on both sides of the pressing plate.

[0013] Further, at least one clamping assembly is arranged on one side of the upper cover.

[0014] Further, a plurality of openings are arranged on the upper surface of the upper cover.

[0015] Further, the semi-permeable membrane is a high-density polyethylene fiber membrane.

[0016] Further, the corners of the frame and the frame are provided with arc transition sections.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] The freeze-drying tray provided by the present application is provided with a clamping assembly on the side of the upper cover, the clamping assembly comprises a pressing plate and a pressing strip, the pressing plate and the pressing strip are hingedly connected with the upper cover, the pressing strip can press the pressing plate to extrude the semi-permeable membrane, thereby realizing the stable connection between the upper cover and the frame of the tray and the fixation of the semi-permeable membrane, and avoiding the technical problem that the upper cover is difficult to be clamped into the tray.

[0019] The present application hingedly connects the pressing plate and the upper cover through the rotating shaft, and has the advantages of simple structure and convenient operation; in addition, the upper cover is provided with a frame with a free end downward, which can avoid scratching the operator and cannot distinguish the upper and lower surfaces of the upper cover.

[0020] The present application arranges arc transition sections at the corners of the frame and the frame, which is not only beneficial to processing, but also beneficial to cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The present application is a freeze-drying tray structure schematic diagram.

[0022] Figure 2 The sectional view structure schematic diagram of the utility model.

[0023] Mark explanation:

[0024] 1-tray, 2-semipermeable membrane, 3-upper cover, 4-pressing plate, 5-pressing strip, 6-frame, 7-rotating shaft, 8-rotary drum, 9-borders, 10-positioning column. Specific embodiments

[0025] The technical scheme of the utility model will be clearly described below in conjunction with the drawings, obviously, the described embodiments are not all embodiments of the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0026] It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions set forth in these embodiments should not be understood as limiting the scope of the utility model.

[0027] The following description of exemplary embodiments is merely illustrative in nature and is not to be taken in any way as restricting the present utility model and its applications or uses in any manner. Here, techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but in the case of applying these techniques, methods and devices, these techniques, methods and devices should be considered as part of the present specification.

[0028] The present embodiment provides a freeze-drying tray, as shown in Figure 1 and Figure 2 The tray 1 has a frame 6, so the tray 1 is an open-top box that holds the material to be freeze-dried. The tray 1 is provided with a semipermeable membrane 2 on the top, which completely covers the opening of the tray 1 and has an excess margin at the edge. The semipermeable membrane 2 is a high-density polyethylene fiber membrane. After covering the opening with the semipermeable membrane 2, the material to be freeze-dried can be prevented from splashing, and the semipermeable membrane is dustproof and hydrophobic, but allows air to pass easily, with sufficient air permeability.

[0029] The upper cover 3 is provided with a border 9 at the edge, and the border 9 extends downward. When the upper cover 3 covers the tray 1, there is a certain gap between the border 9 and the frame 6. The gap between the border 9 and the frame 6 can be made large in size to facilitate the insertion of the upper cover 3 into the tray 1.

[0030] A clamping assembly is provided on the side of the upper cover 3; the clamping assembly includes a pressure plate 4 and a pressure strip 5. The pressure plate 4 is hinged to the upper cover 3, and the pressure strip 5 is hinged to the upper cover 3. The pressure strip 5 presses the pressure plate 4 to compress the semi-permeable membrane 2. The rotation axis of the pressure plate 4 is parallel to the surface of the frame 6, and the rotation axis of the pressure strip 5 is perpendicular to the surface of the frame 6.

[0031] In addition, the clamping assembly also includes a rotating shaft 7, which is disposed on the upper cover 3. Specifically, the rotating shaft 7 is disposed on the frame 9, and the frame 9 has an opening corresponding to the position of the pressure plate 4. Preferably, the rotating shaft 7 is welded to the frame 9 to ensure service life. A rotating cylinder 8 is provided at one end of the pressure plate 4, and the pressure plate 4 and the rotating cylinder 8 are an integral structure, with the rotating cylinder 8 passing through the rotating shaft 7. Thus, the pressure plate 4 is hinged to the upper cover 3 via the rotating shaft 7.

[0032] Positioning posts 10 are provided on the frame 9. The positioning posts 10 are welded to the frame 9. The pressure strip 5 is rotatably connected to the positioning posts 10. A boss is provided at the outer end of the positioning posts 10 to prevent the pressure strip 5 from falling off.

[0033] In other embodiments, each clamping assembly may also include two pressure strips 5, which are respectively disposed on both sides of the pressure plate 4.

[0034] At least one clamping component is provided on one side of the upper cover 3. In this embodiment, two clamping components are provided on one side of the upper cover 3, and the clamping components on both sides are symmetrically arranged.

[0035] To ensure sufficient air permeability during the freeze-drying process, the upper surface of the cover 3 is provided with several openings.

[0036] Preferably, the corners of the frame 6 and the border 9 are provided with arc transition sections.

[0037] When using the freeze-drying tray provided by this utility model, after placing the item to be freeze-dried into the tray 1, cover the tray 1 with the top cover 3. Because the gap between the edge 9 of the top cover 3 and the frame 6 of the tray 1 is relatively large, the top cover 3 easily covers the tray 1. Then, rotate the pressure strip 5 from bottom to top. Since the pressure plate 4 is at an inclined angle after abutting against the frame 6, the pressure strip 5 rotates upwards and gets closer to the pressure plate 4 until the pressure strip 5 presses firmly against the pressure plate 4, causing the pressure plate 4 to press firmly against the semi-permeable membrane 2, thereby fixing the semi-permeable membrane 2 and achieving a seal on the freeze-drying tray. In addition, to prevent the pressure plate 4 from damaging the semi-permeable membrane 2, a silicone pad can be adhered to the side of the pressure plate 4 that abuts against the frame 6.

[0038] The above specific embodiments are merely used to illustrate the technical solutions of the present application but not to limit the present application. Although the present application is described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or equivalently replaced without departing from the scope of the technical solutions of the present application, and all should be included in the scope of the claims of the present application.

Claims

1. A lyophilization tray comprising a tray having a frame, a semi-permeable membrane disposed over the frame, the semi-permeable membrane completely covering the open top of the frame and having a margin around the edges; characterized in that, An upper cover is arranged above the semi-permeable membrane, and a clamping assembly is arranged on the side of the upper cover; the clamping assembly comprises a pressing plate and a pressing strip, the pressing plate is hinged to the upper cover, the pressing strip is hinged to the upper cover, and the pressing strip presses the pressing plate to extrude the semi-permeable membrane.

2. The lyophilization tray of claim 1, wherein, The rotation axis of the pressing plate is parallel to the surface of the frame, and the rotation axis of the pressing strip is perpendicular to the surface of the frame.

3. The lyophilization tray of claim 2, wherein, The clamping assembly further comprises a rotating shaft arranged on the upper cover, and a rotating drum is arranged at one end of the pressing plate and penetrates the outer surface of the rotating shaft.

4. The lyophilization tray of claim 3, wherein, An edge frame is arranged on the edge of the upper cover, and the rotating shaft is arranged on the edge frame, and an opening corresponding to the position of the pressing plate is arranged on the edge frame.

5. The lyophilization tray of claim 4, wherein, A positioning column is arranged on the edge frame, and the pressing strip is rotationally connected to the positioning column.

6. The lyophilization tray of claim 1, wherein, Each clamping assembly comprises two pressing strips arranged on the two sides of the pressing plate.

7. The lyophilization tray of claim 1, wherein, At least one clamping assembly is arranged on one side of the upper cover.

8. The lyophilization tray of claim 1, wherein, A plurality of openings are arranged on the upper surface of the upper cover.

9. The lyophilization tray of claim 1, wherein, The semi-permeable membrane is a polyethylene fiber membrane.

10. The lyophilization tray of claim 4, wherein, A circular arc transition section is arranged at the corner of the frame, and a circular arc transition section is arranged at the corner of the edge frame.

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