Freeze dryer

Abstract

The utility model relates to the technical field of freeze-drying machines, and discloses a freeze-drying machine which comprises a freeze-drying machine with a vacuum pump, a cold trap is arranged above the freeze-drying machine, the freeze-drying machine further comprises an organic glass cover which is used for covering the cold trap, a cavity is formed by the organic glass cover and the cold trap, and the cavity is used for containing articles to be dried. A sealing adjusting structure is arranged in the organic glass cover and used for adjusting the effective sealing volume in the organic glass cover. According to the utility model, the alloy sealing disc with the sealing ring is arranged in the organic glass cover in the up-and-down sealing and sliding manner, so that an effective sealing cavity in the organic glass cover can be adjusted according to requirements, and the screw rod and the screw hole seat are in threaded rotation by rotating the hand twisting wheel; and the alloy sealing disc is pulled up and down to change the to-be-vacuumized volume of the organic glass cover, so that unnecessary energy consumption is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of freeze drying machines, in particular to a freeze drying machine. Background Art

[0002] A freeze dryer is also called a freeze dryer. A freeze dryer is a cold drying device that freezes water-containing substances into a solid state first, and then sublimates the water in the substance from a solid state into a gaseous state, thereby removing the water and preserving the substance.

[0003] In common freeze dryers, a glass cover is installed on the airtight cover above the cold trap, so that a cavity to be evacuated is formed between the glass cover and the cold trap to facilitate the stacking of material racks and achieve ice crystal sublimation dehydration drying. However, the volume of the existing glass cover is fixed. When we dry in small batches, for example, when only one material rack is placed, the vacuum pump still needs to evacuate the volume of the entire glass cover. Obviously, this will generate unnecessary work and increase energy consumption. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in order to overcome the above problems, a freeze dryer is provided, which solves the above problems.

[0005] The utility model solves the technical problem by adopting the following technical solutions:

[0006] The freeze dryer comprises a freeze dryer with a vacuum pump, a cold trap is arranged above the freeze dryer, and also comprises an organic glass cover for covering the cold trap and forming a cavity with the cold trap for accommodating items to be dried, and a sealing adjustment structure is arranged in the organic glass cover for adjusting the effective sealing volume in the organic glass cover.

[0007] Preferably, an airtight ring groove is provided on the upper end surface of the freeze dryer, and a sealing rubber ring is embedded and fixed in the airtight ring groove. When the lower end of the organic glass cover is inserted into the airtight ring groove, the sealing rubber ring forms a sealing fit with the inner and outer walls of the organic glass cover, and the airtight ring groove provides strong support for the rubber ring to ensure that it maintains a good sealing fit state, thereby reducing the leakage probability of the organic glass cover and the freeze dryer.

[0008] Preferably, an alloy end cover is sealed on the upper end surface of the organic glass cover, and a screw hole seat is fixedly provided in the middle of the alloy end cover, a screw rod is rotatably provided in the screw hole seat, an alloy sealing disk is slidably provided in the organic glass cover, a sealing ring is embedded in the outer side wall of the alloy sealing disk for forming a seal with the inner wall of the organic glass cover, a rotating seat is fixedly provided on the upper end of the alloy sealing disk, and the lower end of the screw rod is rotatably provided in the rotating seat.

[0009] Preferably, a hand wheel is fixedly provided on the upper end of the screw rod for convenient and labor-saving rotation of the screw rod.

[0010] Preferably, at least one through-vent hole is provided on the alloy end cover, so that air can be easily replenished or exhausted during the up and down movement of the alloy sealing disk.

[0011] Preferably, a rubber sealing ring is glued and fixed on the lower end of the organic glass cover, which can effectively protect the lower edge of the organic glass cover on the one hand, and improve the sealing performance after it is embedded with the airtight ring groove on the other hand.

[0012] The advantages and positive effects of the utility model are:

[0013] An alloy sealing disk with a sealing ring is provided in the organic glass cover for sealing and sliding upward and downward, so that the effective sealing cavity in the organic glass cover can be adjusted according to demand, and the screw rod and the screw hole seat are threadedly rotated by turning the hand wheel, so that the alloy sealing disk is pulled up and down to change the volume of the organic glass cover to be vacuumed, thereby effectively reducing unnecessary energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the utility model.

[0017] The symbols in the accompanying drawings are described as follows: 10, freeze dryer; 11, vacuum pump; 12, cold trap; 13, airtight ring groove; 14, plexiglass cover; 15, alloy end cover; 16, hand-tightening wheel; 17, screw hole seat; 18, screw; 19, rotating seat; 20, alloy sealing disk; 21, sealing ring; 22, vent. DETAILED DESCRIPTION

[0018] Now, the utility model is further described in detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, so they only show the components related to the utility model. The following is a further detailed description of the embodiments of the utility model in conjunction with the accompanying drawings:

[0019] like Figure 1-2As shown, the freeze dryer described in the utility model includes a freeze dryer 10 with a vacuum pump 11, a cold trap 12 is provided above the freeze dryer 10 (the freeze dryer 10, the vacuum pump 11, and the cold trap 12 are consistent with the prior art and are not described in detail), and also includes an organic glass cover 14 for covering the cold trap 12 and forming a cavity with it for accommodating the items to be dried, and a sealing adjustment structure is provided in the organic glass cover 14 for adjusting the effective sealing volume in the organic glass cover 14.

[0020] Preferably, an airtight ring groove 13 is provided on the upper end surface of the freeze dryer 10, and a sealing rubber ring is embedded and fixed in the airtight ring groove 13. When the lower end of the organic glass cover 14 is inserted into the airtight ring groove 13, the sealing rubber ring forms a sealing fit with the inner and outer walls of the organic glass cover 14, and the airtight ring groove 13 provides strong support for the rubber ring to ensure that it maintains a good sealing fit state, thereby reducing the leakage probability of the organic glass cover 14 and the freeze dryer 10.

[0021] Preferably, an alloy end cover 15 is sealed on the upper end surface of the organic glass cover 14, and a screw hole seat 17 is fixedly provided in the middle of the alloy end cover 15, a screw rod 18 is rotatably provided in the screw hole seat 17, an alloy sealing disk 20 is slidably provided in the organic glass cover 14, a sealing ring 21 is embedded in the outer side wall of the alloy sealing disk 20 for forming a seal with the inner wall of the organic glass cover 14, a rotating seat 19 is fixedly provided on the upper end of the alloy sealing disk 20, and the lower end of the screw rod 18 is rotatably provided in the rotating seat 19.

[0022] Preferably, a hand wheel 16 is fixedly provided on the upper end of the screw rod 18 for convenient and labor-saving rotation of the screw rod 18 .

[0023] Preferably, at least one through-hole 22 is provided on the alloy end cover 15, so that air can be easily replenished or exhausted during the upward and downward movement of the alloy sealing disk 20.

[0024] Preferably, a rubber sealing ring is glued and fixed on the lower end of the organic glass cover 14 , which can effectively protect the lower edge of the organic glass cover 14 on the one hand, and improve the sealing performance after it is embedded with the airtight ring groove 13 on the other hand.

[0025] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A freeze dryer, comprising a freeze dryer (10) with a vacuum pump (11), a cold trap (12) being provided above the freeze dryer (10), characterized in that: It also comprises an organic glass cover (14) for covering the cold trap (12) and forming a cavity therewith for accommodating items to be dried, and a sealing adjustment structure is provided in the organic glass cover (14) for adjusting the effective sealing volume in the organic glass cover (14).

2. The freeze dryer according to claim 1, characterized in that: An airtight ring groove (13) is provided on the upper end surface of the freeze dryer (10), and a sealing rubber ring is embedded and fixed in the airtight ring groove (13). When the lower end of the organic glass cover (14) is inserted into the airtight ring groove (13), the sealing rubber ring forms a sealing fit with the inner and outer walls of the organic glass cover (14), and the airtight ring groove (13) provides strong support for the rubber ring to ensure that it maintains a good sealing fit state, thereby reducing the leakage probability of the organic glass cover (14) and the freeze dryer (10).

3. The freeze dryer according to claim 2, characterized in that: An alloy end cover (15) is sealed on the upper end surface of the organic glass cover (14), and a screw hole seat (17) is fixedly provided in the middle of the alloy end cover (15). A screw rod (18) is rotatably provided in the screw hole seat (17). An alloy sealing disk (20) is slidably provided in the organic glass cover (14). A sealing ring (21) is embedded in the outer wall of the alloy sealing disk (20) for forming a seal with the inner wall of the organic glass cover (14). A rotating seat (19) is fixedly provided at the upper end of the alloy sealing disk (20), and the lower end of the screw rod (18) is rotatably provided in the rotating seat (19).

4. The freeze dryer according to claim 3, characterized in that: A hand wheel (16) is fixedly provided at the upper end of the screw rod (18) for conveniently and labor-savingly rotating the screw rod (18).

5. The freeze dryer according to claim 4, characterized in that: At least one through-going vent hole (22) is provided on the alloy end cover (15), so that air can be easily replenished or exhausted during the upward and downward movement of the alloy sealing disk (20).

6. The freeze dryer according to claim 5, characterized in that: A rubber sealing ring is glued and fixedly mounted on the lower end of the organic glass cover (14), which can effectively protect the lower edge of the organic glass cover (14) on the one hand, and improve the sealing performance of the organic glass cover after being embedded with the airtight ring groove (13) on the other hand.

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