Split bell jar of freeze dryer

Abstract

The utility model discloses a split bell jar of a freeze dryer, which relates to the technical field of freeze dryers, including: a freeze dryer body, a cold trap is arranged at the bottom of the freeze dryer body; an annular boss is arranged at the top of the cold trap, a first groove and a second groove are arranged at the top of the annular boss; a sample shelf is arranged at the top of the first groove; a bell jar, the bell jar is a cylinder with openings at both ends, a cover is arranged at the top of the bell jar, a number of external valve sleeves are arranged along the side wall of the cover, and the bottom of the bell jar is embedded in the second groove. By setting the two ends of the bell jar as openings and splitting the cover with the cover, the weight of the bell jar is reduced, and the edge of the sample shelf is prevented from damaging the inner wall surface of the bell jar, and the bell jar is also prevented from colliding with the sample shelf, causing the sample test tube or vessel to slide off, and the split bell jar does not need to be replaced together with the entire external valve sleeve, which reduces the replacement cost of parts and components, and at the same time reduces the downtime required for parts replacement, ensures the continuity of work, and improves production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of freeze dryers, in particular to a split bell jar of a freeze dryer. Background Art

[0002] Freeze drying is a drying technology that uses the principle of sublimation. It is a process in which the material to be dried is quickly frozen at low temperature, and then in a suitable vacuum environment, the frozen water molecules are directly sublimated into water vapor and escape. The freeze dryer is a device that provides a low temperature and vacuum environment for this special sublimation process, and the bell jar of the freeze dryer is the main sublimation site.

[0003] In the related art, most freeze dryer bell jars have an external valve joint welded to the upper seal, and the lower opening is connected to the freeze dryer body, or is integrally formed; when it is necessary to take or place samples, the bell jar must be lifted upward first. During this process, due to the heavy weight of the bell jar and the external valve sleeve, it is difficult to control the shaking, and it often collides with the sample shelf, causing the sample shelf to scratch the inner wall of the bell jar, or the sample tubes or sample vessels on the sample shelf to slip, making the operation extremely inconvenient and the production efficiency low. Utility Model Content

[0004] The purpose of the utility model is to provide a split bell jar for a freeze dryer to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A split bell jar of a freeze dryer, comprising:

[0007] A freeze dryer body, wherein a cold trap is provided at the bottom of the freeze dryer body;

[0008] The top of the cold trap is provided with an annular boss, and the top of the annular boss is provided with a first groove and a second groove;

[0009] A sample shelf is provided on the top of the first groove;

[0010] The bell jar is a cylinder with openings at both ends. A cover is arranged on the top of the bell jar, and a plurality of external valve sleeves are arranged along the side wall of the cover. The bottom of the bell jar is embedded in the second groove.

[0011] The split bell jar of the freeze dryer according to this solution has at least the following technical effects:

[0012] The split bell jar of the freeze dryer is designed with openings at both ends of the bell jar and a split design of the cover. Compared with the integrated design of the traditional bell jar and the external valve sleeve, the weight of the bell jar is greatly reduced. When it is necessary to take or place samples, the cover is removed together with the external valve sleeve first, and then the bell jar is removed, so as to avoid the shaking of the bell jar due to the overall heavy weight that is difficult to control, thereby causing the edge of the sample shelf to damage the inner wall surface of the bell jar, and also avoid the bell jar colliding with the sample shelf, causing the sample test tube or sample vessel to slide off, thereby improving the convenience and safety of operation; and the split bell jar is easy to replace without having to be replaced together with the entire external valve sleeve, thereby reducing the replacement cost of parts and components, and at the same time reducing the downtime required for parts and components replacement, thereby ensuring the continuity of work and improving production efficiency.

[0013] As a further solution of the utility model: sealing rings are respectively arranged at both ends of the bell jar.

[0014] Since sealing rings are respectively arranged at both ends of the bell jar, the sealing rings can fill the gap between the bottom of the bell jar and the second groove of the annular boss, as well as the gap between the top of the bell jar and the cover, thereby further improving the sealing performance, effectively preventing gas leakage inside the freeze dryer, maintaining the stability of the vacuum environment inside the bell jar, ensuring the processing quality of the sample, and ensuring the reliability of the freeze-drying process.

[0015] As a further solution of the utility model: the material of the bell jar is selected to be transparent acrylic or aluminum alloy.

[0016] Since the material of the bell jar is transparent acrylic, which is a lighter material, the transparent acrylic bell jar is lighter than other materials, making it easier to open the bell jar for laying out or sampling, thereby improving the convenience of operation. In addition, transparent acrylic has good temperature resistance and can withstand the low temperature environment during the freeze-drying process without being easily deformed or cracked, thereby ensuring the stability and reliability of the bell jar during operation.

[0017] As a further solution of the utility model: the material of the cover is selected to be aluminum alloy.

[0018] Since the cover is made of aluminum alloy, which is light in weight, it is easy to install and remove on the top of the bell cover, making it lighter and more convenient to operate when the cover is covered or removed together with the external valve sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of a split bell jar of a freeze dryer;

[0021] Figure 2The diagram is a schematic diagram of the explosion structure of a split bell jar of a freeze dryer.

[0022] Reference numerals:

[0023] 10. Freeze dryer body; 101. Cold trap; 102. Annular boss; 1021. First groove; 1022. Second groove; 103. Sample shelf; 104. Bell jar; 105. Cover; 106. External valve sleeve; 107. Sealing ring. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0030] like Figure 1 and Figure 2 The embodiment of the utility model shown is a split bell jar of a freeze dryer, comprising: a freeze dryer body 10, a cold trap 101 is arranged at the bottom of the freeze dryer body 10; an annular boss 102 is arranged at the top of the cold trap 101, and a first groove 1021 and a second groove 1022 are arranged at the top of the annular boss 102; a sample shelf 103 is arranged at the top of the first groove 1021; a bell jar 104, the bell jar 104 is a cylinder with openings at both ends, a cover 105 is arranged on the top of the bell jar 104, a plurality of external valve sleeves 106 are arranged along the side wall of the cover 105, and the bottom of the bell jar 104 is embedded in the second groove 1022.

[0031] Specifically, the split bell jar of the freeze dryer is designed to be split from the cover 105 by setting both ends of the bell jar 104 to be openings. Compared with the integrated design of the traditional bell jar 104 and the external valve sleeve 106, the weight of the bell jar 104 is greatly reduced. When it is necessary to take or place samples, the cover 105 and the external valve sleeve 106 are removed first, and then the bell jar 104 is removed, so as to avoid the shaking of the bell jar 104 due to the large overall weight that is difficult to control, thereby causing the edge of the sample shelf 103 to damage the inner wall surface of the bell jar 104, and also avoid the bell jar 104 colliding with the sample shelf 103, causing the sample test tube or sample vessel to slide, thereby improving the convenience and safety of operation; and the split bell jar 104 is easy to replace, and there is no need to replace it together with the entire external valve sleeve 106, thereby reducing the replacement cost of parts and components, and at the same time reducing the downtime required for parts replacement, ensuring the continuity of work, and improving production efficiency.

[0032] like Figure 2 As shown, sealing rings 107 are respectively provided at both ends of the bell jar 104.

[0033] Specifically, since sealing rings 107 are respectively provided at both ends of the bell jar 104, the sealing ring 107 can fill the gap between the bottom of the bell jar 104 and the second groove 1022 of the annular boss 102, as well as the gap between the top of the bell jar 104 and the cover 105, thereby further improving the sealing performance, effectively preventing gas leakage inside the freeze dryer, maintaining the stability of the vacuum environment inside the bell jar 104, ensuring the processing quality of the sample, and ensuring the reliability of the freeze-drying process.

[0034] According to the embodiment of the present invention, the material of the bell jar 104 is transparent acrylic or aluminum alloy.

[0035] Specifically, since the material of the bell jar 104 is transparent acrylic, which is a lighter material, the transparent acrylic bell jar 104 is lighter than other materials, making it easy to open the bell jar 104 for laying out or sampling, thereby improving the convenience of operation; and transparent acrylic has good temperature resistance and can withstand the low temperature environment during the freeze-drying process without being easily deformed or cracked, thereby ensuring the stability and reliability of the bell jar 104 during operation.

[0036] It should also be noted that the material of the cover 105 is aluminum alloy.

[0037] Specifically, since the material of the cover 105 is aluminum alloy, which is light in weight, it is easy to install and remove on the top of the bell jar 104, making it lighter and more convenient to operate when the cover 105 and the external valve sleeve 106 are covered or removed together.

[0038] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. A split bell jar of a freeze dryer, characterized in that: include: A freeze dryer body (10), wherein a cold trap (101) is provided at the bottom of the freeze dryer body (10); The cold trap (101) is provided with an annular boss (102) at the top, and the annular boss (102) is provided with a first groove (1021) and a second groove (1022) at the top; A sample shelf (103) is arranged on the top of the first groove (1021); The bell jar (104) is a cylindrical body with openings at both ends. A cover (105) is arranged on the top of the bell jar (104). A plurality of external valve sleeves (106) are arranged along the side wall of the cover (105). The bottom of the bell jar (104) is embedded in the second groove (1022).

2. The split bell jar of the freeze dryer according to claim 1, characterized in that: Sealing rings (107) are respectively provided at both ends of the bell jar (104).

3. The split bell jar of the freeze dryer according to claim 1, characterized in that: The material of the bell jar (104) is transparent acrylic.

4. The split bell jar of the freeze dryer according to claim 1, characterized in that: The material of the cover (105) is aluminum alloy.

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