Drying chamber for freeze dryer

Abstract

The drying chamber comprises a drying cylinder composed of a cylinder body, a cylinder cover and a cylinder bottom, a stand column vertically arranged on the cylinder bottom is arranged in the drying cylinder, a fixed plate is arranged on the stand column, at least two movable plates are arranged above the fixed plate, the movable plates are arranged on the stand column in a sleeved mode, and the movable plates and the stand column slide up and down relatively. A first compression spring arranged on the stand column in a sleeving mode is arranged between every two adjacent movable plates, a second compression spring arranged on the stand column in a sleeving mode is arranged between the lowermost movable plate and the fixed plate, and a telescopic air bag with one end connected with the movable plates and the other end connected with the barrel cover is arranged between the uppermost movable plate and the barrel cover. An air tap hole blocked by one end of the telescopic air bag is formed in the cylinder cover; and an air tap connected with the telescopic air bag penetrates through the air tap hole. The drying chamber has the advantages of being simple in structure and convenient to use, sample storage bottles and cans are sealed tightly, the test effect is good, the overall function is complete, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, and more specifically, it relates to a drying chamber for a freeze dryer. Background Technology

[0002] Laboratory sample drying chambers are often used in conjunction with low-temperature vacuum dryers. After the low-temperature vacuum dryer is operational, it connects to the interior of the sample drying chamber, where a vacuum is created and the sample is subjected to low-temperature operation, resulting in vacuum freezing. However, existing drying chambers used for sample testing cannot further seal the samples. If the samples are not tightly sealed in the containers, or if the containers are opened due to slight vibrations of the equipment, the entire testing process will be affected, resulting in poor overall performance. Therefore, this invention proposes a drying chamber for a freeze dryer. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a drying chamber for a freeze dryer. This drying chamber has the characteristics of simple structure and convenient use, and it can tightly seal the sample storage bottles and jars, resulting in excellent test results.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: The present utility model relates to a drying chamber for a freeze dryer, comprising a drying cylinder composed of a cylinder body, a cylinder cover, and a cylinder bottom. A column is erected on the cylinder bottom inside the drying cylinder. A fixed plate is provided on the column. At least two movable plates are provided above the fixed plate. The movable plates are fitted onto the column and slide up and down relative to each other. A first compression spring is provided between two adjacent movable plates and fitted onto the column. A second compression spring is provided between the lowermost movable plate and the fixed plate and fitted onto the column. A telescopic airbag is provided between the uppermost movable plate and the cylinder cover, with one end connected to the movable plate and the other end connected to the cylinder cover. The telescopic airbag extends and retracts up and down. An air nozzle hole is opened on the cylinder cover, which is blocked by one end of the telescopic airbag. An air nozzle connected to the telescopic airbag passes through the air nozzle hole.

[0005] The present invention is further configured such that a limiting block is provided at the top of the column.

[0006] The present invention is further configured such that the upper surfaces of both the fixed plate and the movable plate are provided with annular barriers.

[0007] The present invention is further configured such that a flexible pad is provided on the lower end surface of the movable plate.

[0008] The present invention is further configured such that a guide hole is provided on the bottom of the drying cylinder to connect the inside of the drying cylinder with the outside.

[0009] The present invention is further configured such that the number of movable plates is four.

[0010] In summary, this utility model has the following beneficial effects: The benchtop freeze dryer involved in this utility model uses a hand-cranked adjustment of the drying chamber. By placing the bottles and jars containing the stored samples upright on a movable plate with a barrier, and then inflating the telescopic airbag, the movable plate descends and presses against the lids of the bottles and jars, forming a further seal on the bottles and jars. This prevents the bottles and jars from being opened due to slight vibrations of the equipment, improves the reliability of the test, and has complete overall functions and strong practicality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0012] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the patent claims of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0013] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0014] Example 1

[0015] See Figure 1 As shown, the drying chamber of a freeze dryer involved in this embodiment includes a drying cylinder 4 composed of a cylinder body 1, a cylinder cover 2, and a cylinder bottom 3. A column 5 is provided inside the drying cylinder 4, which is erected on the cylinder bottom. A fixed plate 6 is provided on the column 5. Four movable plates 7 are provided above the fixed plate 6. The movable plates 7 are sleeved on the column 5 and slide up and down relative to each other. A first compression spring 8 is provided between two adjacent movable plates 7 and sleeved on the column. A second compression spring 9 is provided between the lowermost movable plate 7 and the fixed plate 6 and sleeved on the column. A telescopic airbag 10 is provided between the uppermost movable plate 7 and the cylinder cover 2, with one end connected to the movable plate and the other end connected to the cylinder cover. The telescopic airbag 10 can extend and retract up and down. An air nozzle hole 11 is opened on the cylinder cover 2, which is blocked by one end of the telescopic airbag. An air nozzle 12 connected to the telescopic airbag passes through the air nozzle hole 11.

[0016] Furthermore, a limiting block 13 is provided at the top of the column 5.

[0017] Furthermore, a guide hole 16 is provided on the bottom of the cylinder 3 to connect the inside of the drying cylinder with the outside.

[0018] In this embodiment, the samples contained in the bottles are placed upright one by one on the movable plate 7 with the enclosure 13. The air nozzle 12 is used to supply air to the inside of the telescopic airbag 10 to pressurize it until it expands. During this process, all the movable plates 7 are moved down until they are pressed against the corresponding sample bottle caps for further sealing.

[0019] The compression springs (including the first compression spring 8 and the second compression spring 9) are used to automatically reset the movable plate 7.

[0020] The limiting block 13 is used to prevent the movable plate 7 from detaching from the column 5.

[0021] The guide hole 16 is used to connect to a low-temperature vacuum dryer to achieve vacuuming and cooling operations inside the drying cylinder 4.

[0022] Example 2

[0023] See Figure 1 As shown, the drying chamber for a freeze dryer involved in this embodiment is further configured, based on embodiment 1, with the upper end surfaces of the fixed plate 6 and the movable plate 7 both provided with annular enclosures 14.

[0024] In this implementation scheme, the enclosure 14 is used to protect the sample from slipping and prevent it from falling.

[0025] Example 3

[0026] See Figure 1 As shown, the drying chamber for a freeze dryer involved in this embodiment is further configured, based on embodiment 1, with a flexible gasket 15 provided on the lower end surface of the movable plate 7.

[0027] In this embodiment, the flexible pad 15 is used as a liner.

[0028] The tabletop freeze dryer of this utility model features a hand-cranked drying chamber. By placing the bottles and jars containing the stored samples upright on a movable plate with a barrier, the movable plate descends after the telescopic airbag is inflated, pressing it against the lid of the bottle or jar to form a further seal. This prevents the bottle or jar from opening due to slight vibrations of the equipment, improves the reliability of the test, and has complete functions and strong practicality.

[0029] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the actual orientation or positional relationship shown. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0030] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A drying chamber for a freeze dryer, comprising a drying cylinder composed of a cylinder body, a cylinder cover and a cylinder bottom, characterized in that: The drying cylinder is provided with a vertical column standing on the bottom of the cylinder, a fixed plate is arranged on the vertical column, at least two movable plates are arranged above the fixed plate, the movable plates are sleeved on the vertical column and slide up and down relative to each other, a first compression spring is arranged between two adjacent movable plates and sleeved on the vertical column, a second compression spring is arranged between the lowermost movable plate and the fixed plate and sleeved on the vertical column, a telescopic air bag with one end connected to the movable plate and the other end connected to the cylinder cover is arranged between the uppermost movable plate and the cylinder cover, the telescopic air bag telescopes up and down, a gas nozzle hole blocked by one end of the telescopic air bag is arranged on the cylinder cover, and a gas nozzle connected to the telescopic air bag is arranged in the gas nozzle hole.

2. The drying chamber for a freeze dryer according to claim 1, characterized in that: A limiting block is arranged on the top of the vertical column.

3. The drying chamber for a freeze dryer according to claim 1 or 2, characterized in that: Ring-shaped enclosures are arranged on the upper end faces of the fixed plate and the movable plates.

4. The drying chamber for a freeze dryer according to claim 3, characterized in that: Flexible gaskets are arranged on the lower end faces of the movable plates.

5. The drying chamber for a freeze dryer according to claim 4, characterized in that: A flow guide hole for connecting the inside of the drying cylinder with the outside is arranged on the bottom of the cylinder.

6. The drying chamber for a freeze dryer according to claim 1, characterized in that: The number of the movable plates is four.

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