Inlet air backfilling and filtering external hanging valve mechanism and freeze dryer

Abstract

The utility model provides an air inlet backfilling and filtering external hanging valve mechanism and a freeze dryer, and relates to the technical field of freeze dryers. The air inlet backfilling and filtering external hanging valve mechanism comprises a three-way pipeline and an external hanging valve, the three-way pipeline is provided with a first channel, a second channel and a third channel which are communicated with one another, the external hanging valve comprises a rotating handle and a control pipeline, one end of the control pipeline is installed on one side of the rotating handle, and the other end of the control pipeline is sleeved with the second channel in a sealed mode. A sealing plate is installed in the control pipeline and divides the inner space of the control pipeline into a first space and a second space, a first through hole and a second through hole are formed in the side wall of the control pipeline, the first through hole is communicated with the first space, the second through hole is communicated with the second space, and an installation hole is formed in the rotating handle. The mounting hole is communicated with the second space, and a filtering assembly is mounted in the mounting hole. According to the air inlet backfilling and filtering external hanging valve mechanism, a sample in an external hanging bottle can be prevented from being polluted after freeze-drying is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of freeze dryers, in particular to an air intake backfill filter external valve mechanism and a freeze dryer. Background Art

[0002] The freeze dryer originated from the vacuum freeze drying technology in the 1920s. In the 21st century, vacuum freeze drying technology has been widely used in fields other than medicine, biological products, food, blood products and active substances. Freeze drying is a drying technology that uses the principle of sublimation. It is a process in which the dried substance is quickly frozen at low temperature, and then in an appropriate vacuum environment, the frozen water molecules are directly sublimated into water vapor and escape.

[0003] Freeze dryers typically require an external valve mechanism to connect an external bottle to hold the sample. Removing the external bottle after freeze drying can easily contaminate the sample inside, leading to freeze-drying failure. Therefore, a freeze dryer with an air inlet, backfill, and filter external valve mechanism and design is needed to prevent sample contamination within the bottle after freeze drying. Utility Model Content

[0004] In response to the above-mentioned problems in the prior art, the present application proposes an air intake backfill filter plug-in valve mechanism and a freeze dryer, which can avoid contamination of samples in the plug-in bottle after freeze-drying is completed.

[0005] 20. The smoke filter assembly of claim 19, wherein the smoke filter assembly is configured to extend the life of the smoker and to provide a filter element for the smoke filter. The smoke filter assembly comprises a three-way pipe, wherein the three-way pipe is provided with a first channel, a second channel, and a third channel that are interconnected. The first channel can be sealed and communicated with a freeze-drying pipe of a freeze-drying host, and the third channel can be sealed and communicated with an external bottle. The external valve comprises a rotating handle and a control pipe, one end of the control pipe is installed on one side of the rotating handle, and the other end of the control pipe is sealed and sleeved in the second channel. A sealing plate is installed in the control pipe, and the sealing plate divides the internal space of the control pipe into a first space and a second space. A first through hole and a second through hole are provided on a side wall of the control pipe, and the first through hole is connected to the first space, and the second through hole is connected to the second space. A mounting hole is provided on the rotating handle, and the mounting hole is connected to the second space, and a filter assembly is installed in the mounting hole.

[0006] When the freeze dryer performs freeze drying operation on the external bottle, the rotating handle is rotated to drive the control pipe to rotate relative to the second channel until the first through hole is connected to the third channel; when the freeze drying operation is completed, the rotating handle is rotated to drive the control pipe to rotate relative to the second channel until the second through hole is connected to the third channel, and the filter component filters the gas entering the external bottle.

[0007] As a further improvement of the above technical solution:

[0008] The above-mentioned air intake backfill filter plug-in valve mechanism further has the following features: the filter assembly includes a plug and a needle filter, the needle filter passes through the plug, and the plug is sealed and installed in the installation hole.

[0009] The above-mentioned air intake backfill filter plug-in valve mechanism further has the following features: the first through hole and the second through hole are respectively opened on the side walls on opposite sides of the control pipe.

[0010] The above-mentioned air intake backfill filter plug-in valve mechanism further has a tapered joint provided on the outer side wall of the third channel.

[0011] Another aspect of the present invention provides a freeze dryer, which includes a freeze dryer main unit and the air intake backfill filter external valve mechanism as described above, wherein the first channel can be sealed and connected to the freeze drying pipeline of the freeze dryer main unit.

[0012] The above technical features can be combined in various suitable ways or replaced by equivalent technical features, as long as the purpose of the present invention can be achieved.

[0013] The utility model provides an air intake backfill filter plug-in valve mechanism and a freeze dryer, which have at least the following beneficial effects compared with the prior art: when freeze-drying operation needs to be performed on the external bottle, the external bottle is first sealed and connected to the third channel, and then the first channel is sealed and connected to the freeze-drying pipeline of the freeze-drying host, and the rotating handle is rotated to drive the control pipeline to rotate relative to the second channel until the first through hole is connected to the third channel, and finally the freeze-drying host is started to perform freeze-drying operation on the external bottle; when the freeze-drying operation is completed, the rotating handle is rotated to drive the control pipeline to rotate relative to the second channel until the second through hole is connected to the third channel, and under the action of air pressure, outside air enters the external bottle, and the filter component filters the gas entering the external bottle, thereby avoiding contamination of the sample in the external bottle.

[0014] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0017] Figure 1 A schematic diagram of the structure of an intake backfill filter plug-in valve mechanism provided by an embodiment of the present utility model is shown;

[0018] Figure 2 A top view of an intake backfill filter plug-in valve mechanism provided by an embodiment of the present utility model is shown;

[0019] Figure 3 Shows Figure 2 Cross-sectional view of section AA in FIG.

[0020] In the drawings, like reference numerals are used for like parts, but the drawings are not necessarily true to scale.

[0021] Description of reference numerals:

[0022] 100-Intake backfill filter external valve mechanism, 110-Three-way pipe, 111-First channel, 112-Second channel, 113-Third channel, 114-Conical joint, 120-External valve, 121-Rotary handle, 122-Control pipe, 123-Sealing plate, 124-First space, 125-Second space, 126-First through hole, 127-Second through hole, 130-Filter assembly, 131-Plug, 132-Syringe filter. DETAILED DESCRIPTION

[0023] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships 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 should not be understood as a limitation to the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0026] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] The embodiment of the present utility model provides an air intake backfill filter plug-in valve mechanism 100, which can prevent contamination of samples in the plug-in bottle after freeze-drying.

[0030] See also Figure 1 、 Figure 2 and Figure 3 The embodiment of the present invention provides an air intake backfill filter plug-in valve mechanism 100, which includes a three-way pipe 110 and an external valve 120. The three-way pipe 110 is provided with a first channel 111, a second channel 112 and a third channel 113 that are interconnected. The first channel 111 can be sealed and connected to the freeze-drying pipe of the freeze-drying host, and the third channel 113 can be sealed and connected to the external bottle. The external valve 120 includes a rotating handle 121 and a control pipe 122. One end of the control pipe 122 is installed on one side of the rotating handle 121. The control pipe The other end of 122 is sealed in the second channel 112, and a sealing plate 123 is installed in the control pipe 122. The sealing plate 123 divides the internal space of the control pipe 122 into a first space 124 and a second space 125. A first through hole 126 and a second through hole 127 are provided on the side wall of the control pipe 122, and the first through hole 126 is connected to the first space 124, and the second through hole 127 is connected to the second space 125. A mounting hole is provided on the rotating handle 121, and the mounting hole is connected to the second space 125, and a filter assembly 130 is installed in the mounting hole.

[0031] When the freeze dryer performs freeze drying operation on the external bottle, the rotating handle 121 is rotated to drive the control pipe 122 to rotate relative to the second channel 112 until the first through hole 126 is connected to the third channel 113; when the freeze drying operation is completed, the rotating handle 121 is rotated to drive the control pipe 122 to rotate relative to the second channel 112 until the second through hole 127 is connected to the third channel 113, and the filter component 130 filters the gas entering the external bottle.

[0032] When the external bottle needs to be freeze-dried, the external bottle is first sealed and connected to the third channel 113, and then the first channel 111 is sealed and connected to the freeze-drying pipeline of the freeze-drying host. The rotating handle 121 is rotated to drive the control pipeline 122 to rotate relative to the second channel 112 until the first through hole 126 is connected to the third channel 113, and finally the freeze-drying host is started to perform the freeze-drying operation on the external bottle; when the freeze-drying operation is completed, the rotating handle 121 is rotated to drive the control pipeline 122 to rotate relative to the second channel 112 until the second through hole 127 is connected to the third channel 113. Under the action of air pressure, the outside air enters the external bottle, and the filter component 130 filters the gas entering the external bottle, thereby avoiding contamination of the sample in the external bottle.

[0033] In this example, see Figure 1 、 Figure 2 and Figure 3Filter assembly 130 includes a plug 131 and a syringe filter 132. Syringe filter 132 extends through plug 131 and is sealed within the mounting hole. When rotary handle 121 is rotated to drive control conduit 122 relative to second channel 112 until second through hole 127 connects to third channel 113, air pressure allows external air to enter the external bottle through syringe filter 132, where it filters the air entering the external bottle. Of course, it is understood that filter assembly 130 may also utilize other types of filters, such as a mesh filter or a cartridge filter.

[0034] The air intake backfill filter plug-in valve mechanism 100 provided by the embodiment of the present invention, further, please refer to Figure 3 The first through hole 126 and the second through hole 127 are respectively provided on the side walls on opposite sides of the control pipe 122. When freeze-drying operation is needed for the external bottle, the external bottle is first sealed and connected to the third channel 113, and then the first channel 111 is sealed and connected to the freeze-drying pipe of the freeze-drying main unit. The rotary handle 121 is rotated to drive the control pipe 122 to rotate relative to the second channel 112 until the first through hole 126 is connected to the third channel 113. Finally, the freeze-drying main unit is started to perform freeze-drying operation on the external bottle. When the freeze-drying operation is completed, the rotary handle 121 is rotated 180° to drive the control pipe 122 to rotate relative to the second channel 112 until the second through hole 127 is connected to the third channel 113. Under the action of air pressure, external air enters the external bottle, and the filter assembly 130 filters the gas entering the external bottle, thereby preventing contamination of the sample in the external bottle.

[0035] In this example, see Figure 1 and Figure 3 The outer side wall of the third channel 113 is provided with a tapered joint 114. The tapered joint 114 facilitates the sealing connection of the external bottle to the third channel 113.

[0036] The present invention also provides a freeze dryer comprising a freeze dryer and an air intake, backfill, and filter plug-in valve mechanism 100 as provided in any of the aforementioned embodiments. A first channel 111 is capable of sealed communication with the freeze drying pipeline of the freeze dryer. The specific structure of the air intake, backfill, and filter plug-in valve mechanism 100 is similar to that of the aforementioned embodiments. Since the present freeze dryer utilizes all of the technical solutions of all of the aforementioned embodiments, it possesses at least all of the beneficial effects provided by the technical solutions of the aforementioned embodiments, and therefore, no further elaboration is required here.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. An air intake backfill filter plug-in valve mechanism, characterized in that: The air intake backfill filter external valve mechanism (100) comprises a three-way pipe (110) and an external valve (120), wherein the three-way pipe (110) is provided with a first channel (111), a second channel (112) and a third channel (113) which are interconnected, wherein the first channel (111) can be sealedly connected to the freeze-drying pipe of the freeze-drying host, and the third channel (113) can be sealedly connected to the external bottle, and the external valve (120) comprises a rotating handle (121) and a control pipe (122), wherein one end of the control pipe (122) is mounted on one side of the rotating handle (121), and the other end of the control pipe (122) is sealedly sleeved on the second channel (111). 2), a sealing plate (123) is installed in the control pipe (122), and the sealing plate (123) divides the internal space of the control pipe (122) into a first space (124) and a second space (125); a first through hole (126) and a second through hole (127) are opened on the side wall of the control pipe (122), and the first through hole (126) is connected to the first space (124), and the second through hole (127) is connected to the second space (125); a mounting hole is opened on the rotating handle (121), and the mounting hole is connected to the second space (125), and a filter assembly (130) is installed in the mounting hole; When the freeze dryer performs freeze drying on the external bottle, the rotating handle (121) is rotated to drive the control pipe (122) to rotate relative to the second channel (112) to the first through hole (126) and to be connected to the third channel (113); when the freeze drying operation is completed, the rotating handle (121) is rotated to drive the control pipe (122) to rotate relative to the second channel (112) to the second through hole (127) and to be connected to the third channel (113), and the filter assembly (130) filters the gas entering the external bottle.

2. The air intake backfill filter plug-in valve mechanism according to claim 1, characterized in that: The filter assembly (130) comprises a plug (131) and a needle filter (132), wherein the needle filter (132) passes through the plug (131), and the plug (131) is sealed and installed in the installation hole.

3. The air intake backfill filter plug-in valve mechanism according to claim 1, characterized in that: The first through hole (126) and the second through hole (127) are respectively opened on two opposite side walls of the control pipe (122).

4. The air intake backfill filter plug-in valve mechanism according to claim 1, characterized in that: The outer side wall of the third channel (113) is provided with a tapered joint (114).

5. A freeze dryer, characterized in that: The freeze dryer comprises a freeze drying main unit and an air intake backfill filter external valve mechanism (100) as claimed in any one of claims 1 to 4, and the first channel (111) can be sealed and connected to the freeze drying pipeline of the freeze drying main unit.

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