Freeze dryer box body and cold trap connecting structure

Abstract

The utility model provides a freeze dryer box body and cold trap connecting structure, which comprises a freeze dryer box body, a cold trap box body, cold trap sealing plates and connecting pieces, and is characterized in that a plurality of connecting pieces are welded between the cold trap sealing plates in the freeze dryer box body and the cold trap box body and are longitudinally distributed in an array manner; the plurality of air inlets are uniformly distributed between the freeze dryer box body and the cold trap box body at equal intervals; the whole connecting piece is of an I-shaped structure; according to the utility model, the I-shaped connecting piece is additionally arranged between the cold trap box body and the freeze dryer box body, a thick plate in the prior art is replaced, and a split type design scheme is adopted, so that the aim of saving cost is fulfilled while the connecting strength is ensured, and meanwhile, the problem of cold bridge between the box body and the trap is solved to the greatest extent; in addition, when the connecting piece is selected and manufactured, the purpose of controlling the total length can be achieved by controlling the length size of the supporting plate, and through the design, the overall occupied space of the device is reduced, the material and machining cost of the container is reduced, and the overall weight of the device is reduced.

Description

Technical Field

[0001] The utility model relates to the field of freeze dryers, in particular to a freeze dryer box and a cold trap connection structure. Background Art

[0002] A freeze dryer is a device that uses the principles of freezing and sublimation to remove moisture from objects for long-term preservation and maintain their original properties. It is widely used in a variety of fields, including food, pharmaceuticals, biological products, and chemicals. Freeze-drying technology removes moisture from objects by freezing the water into solid ice at low temperatures, then allowing the ice to sublime directly into water vapor in a vacuum environment. Finally, the water vapor is condensed into water through a condenser. This process not only effectively preserves the color, aroma, taste, and nutritional content of the material, but also significantly extends the product's shelf life.

[0003] The cold trap is one of the core components of the freeze dryer. Its main function is to collect and condense the water vapor generated during the freeze-drying process. By lowering the temperature, the cold trap provides a very low-temperature surface for the water vapor, allowing it to quickly condense into liquid water on this surface, thereby preventing it from entering the vacuum pump or vacuum system and avoiding water vapor contamination and damage to the system. The cold trap is usually made of special materials with good high-temperature resistance and stable working performance. It is also designed to be detachable for easy cleaning and maintenance.

[0004] During the freeze-drying process, the freeze dryer and the cold trap work closely together to freeze-dry the material. First, the refrigeration system freezes the material at low temperatures, converting the water in the material into solid ice. Then, under the action of the vacuum system, the frozen material is placed in a vacuum environment, causing the solid ice to sublime directly into water vapor. This water vapor is then sucked into the cold trap and quickly condenses into liquid water on the low-temperature surface of the cold trap. The cold trap effectively removes the water vapor generated during the freeze-drying process through its efficient condensation effect, maintains the dry state of the vacuum system, and prevents water vapor from damaging and contaminating the vacuum pump. At the same time, the stable working performance of the cold trap also ensures the smooth progress of the freeze-drying process and the high quality of the freeze-dried product.

[0005] Existing industrial pharmaceutical freeze dryers require a middle partition to connect the cold trap and the box to ensure sufficient strength. Because the box and the cold trap are both pressure vessels and the middle partition must also ensure the hydraulic thrust of a relatively large box cold trap isolation valve, the middle partition needs to be of sufficient thickness. For large freeze dryers, the partition needs to be of a corresponding size, which consumes a lot of material; the middle partition is generally made of 316L material, which is relatively expensive; there are also great difficulties in processing, welding and installation; the industry also adopts a split design of the box and cold trap and uses reinforcement welding to ensure strength and rigidity; but the space between the box and the cold trap is relatively large, which is not conducive to controlling the overall length and production cost of the box cold trap. Utility Model Content

[0006] In order to solve the problems in the prior art that the components used to connect the freeze drying machine housing and the cold trap are high in manufacturing cost and difficult to control the overall length, the utility model provides a freeze drying machine housing and cold trap connection structure;

[0007] The utility model provides a freeze drying machine box and cold trap connection structure adopts the following technical solutions:

[0008] A freeze-drying machine housing and cold trap connection structure, comprising a freeze-drying machine housing, a cold trap housing, a cold trap sealing plate, and a connector, characterized in that a plurality of connectors are welded between the freeze-drying machine housing and the cold trap sealing plate in the cold trap housing, the plurality of connectors being arranged in a longitudinal array and uniformly distributed between the freeze-drying machine housing and the cold trap housing at equal intervals; the connectors are generally in an "I"-shaped structure;

[0009] Furthermore, the connecting member includes a support plate and a connecting plate, and there are two connecting plates; the two connecting plates are respectively welded to the cold trap sealing plate and the outer wall of the freeze dryer box; a support plate is integrally formed between the two connecting plates;

[0010] Furthermore, the support plate and the connecting plate are perpendicular to each other; the adjacent surface of the connecting plate relative to the support plate is set as an inclined surface;

[0011] Furthermore, the connection between the adjacent edges of the connecting plate and the freeze dryer box and the cold trap box, and the connection between the connecting plate and the support plate are all arc structures;

[0012] Furthermore, the connecting plate is connected to the freeze dryer housing and the cold trap housing by welding, and a weld is formed at the joint between the connecting plate and the freeze dryer housing and the cold trap housing;

[0013] Furthermore, the weld is formed by fillet welding; the weld can be formed continuously or intermittently along the length of the connecting plate; the weld meets the welding requirements of national standards and satisfies the welding strength;

[0014] Furthermore, ribs are welded between the support plate and the connection plate; the number of the ribs is N, where N≥2.

[0015] In summary, the beneficial effects of the present invention are as follows:

[0016] The utility model adds an "I"-shaped connector between the cold trap box and the freeze dryer box to replace the thick plate of the prior art, as well as a split design scheme, thereby ensuring the connection strength while achieving the purpose of cost saving. In addition, when selecting and making the connector, the overall length can be controlled by controlling the length of the support plate. Through this design, the overall occupied space of the equipment is reduced, the material and processing costs of the container are reduced, and the overall weight of the equipment is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the installation of the utility model between the freeze dryer and the cold trap;

[0018] Figure 2 For this utility model Figure 1 A magnified schematic diagram of part A;

[0019] Figure 3 This is a schematic diagram of the intermittent fillet weld of the connector of the utility model;

[0020] Figure 4 This is a schematic diagram of the continuous fillet weld of the connector of the utility model;

[0021] Figure 5 This is a schematic structural diagram of the second embodiment of the present utility model.

[0022] As shown in the figure: 1-freeze dryer box, 2-cold trap box, 21-cold trap sealing plate, 3-connecting piece, 31-support plate, 32-connecting plate, 4-weld. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-5 The utility model is further described in detail:

[0024] The present invention discloses a freeze-drying machine housing and a cold trap connection structure. Figure 1 、 2As shown, a freeze drying machine casing 1 and a cold trap connection structure comprises a freeze drying machine casing 1, a cold trap casing 2, a cold trap sealing plate 21, and a connecting piece 3, characterized in that a plurality of connecting pieces 3 are welded between the freeze drying machine casing 1 and the cold trap sealing plate 21 in the cold trap casing 2, and the plurality of connecting pieces 3 are distributed in a longitudinal array and are evenly distributed between the freeze drying machine casing 1 and the cold trap casing 2 at the same intervals; the connecting piece 3 is an "I"-shaped structure as a whole; in this embodiment, a plurality of "I"-shaped connecting pieces 3 distributed in a longitudinal array are welded between the freeze drying machine casing 1 and the cold trap casing 2, so as to achieve a stable and uniform connection; firstly, the use of such connecting pieces 3 takes away the partitioning method of a whole thick plate in the prior art, which saves costs to a certain extent; in addition, such a layout ensures uniform stress distribution, thereby improving the stability and durability of the overall structure; and the evenly distributed connecting pieces 3 can effectively disperse and withstand the stress and vibration generated during the freeze drying process, thereby reducing the risk of structural deformation;

[0025] like Figure 1 、 2 As shown, the connecting member 3 includes a support plate 31 and a connecting plate 32, and there are two connecting plates 32; the two connecting plates 32 are welded to the cold trap sealing plate 21 and the outer wall of the freeze drying machine housing 1 respectively; a support plate 31 is integrally formed between the two connecting plates 32; in this embodiment, the connecting member 3 is composed of a support plate 31 and two connecting plates 32, and the connecting plates 32 are welded to the cold trap sealing plate 21 and the outer wall of the freeze drying machine housing 1 respectively, and the support plate 31 is located between the two and vertically connected thereto to form an "I" structure; the "I"-shaped design enhances the bending and torsion resistance of the connecting member 3 and adapts to complex working environments;

[0026] In addition, it is worth noting that in this embodiment, the length of the support plate 31 can be appropriately selected to effectively control the connection length between the box and the cold trap. Selecting an appropriate connection length can reduce the overall space occupied by the device, reduce the material and processing costs of the container, and reduce the weight of the device.

[0027] like Figure 2 As shown, the support plate 31 and the connecting plate 32 are perpendicular to each other; the adjacent surface of the connecting plate 32 relative to the support plate 31 is set as an inclined surface; in this embodiment, the support plate 31 and the connecting plate 32 are set perpendicularly, and the adjacent surface of the connecting plate 32 is designed as an inclined surface. This design helps to disperse stress and avoid stress concentration; the inclined surface design can effectively disperse the force on the connection and reduce the risk of fracture caused by stress concentration; and the inclined surface design is more visually beautiful and also conforms to the optimization principle of engineering mechanics;

[0028] like Figure 2 As shown, the connection between the connecting plate 32 and the adjacent edges of the freeze dryer housing 1 and the cold trap housing 2, and the connection between the connecting plate 32 and the support plate 31 are all arc structures;

[0029] like Figure 3 、 4 As shown, the connecting plate 32 is connected to the freeze dryer housing 1 and the cold trap housing 2 by welding, and a weld 4 is formed at the joint between the connecting plate 32 and the freeze dryer housing 1 and the cold trap housing 2; the weld 4 is formed by fillet welding; the weld 4 can be formed continuously or intermittently along the length direction of the connecting plate 32; the weld 4 meets the welding requirements of national standards and meets the welding strength requirements. In this embodiment, the weld 4 is formed by fillet welds, and the cross-section of the weld formed by fillet welding is a triangular structure; the fillet weld has a high bearing capacity and can withstand large loads, and is particularly suitable for welded structures that need to withstand loads, such as bridges, buildings, and pressure vessels: the structural form of the fillet weld is simple , easy to manufacture and install, reducing processing difficulty and cost; in addition, the welding quality of fillet welds is easy to ensure, which can ensure the safety of joints and reduce the risk of welding defects and failures; in this embodiment, intermittent welding can also be selected, which can reduce the size of the weld molten zone and reduce stress concentration during welding, thereby reducing the risk of cracks; during the stop welding cycle, the weld can be cooled, slowing down the accumulation of thermal stress, which is conducive to the formation and fusion of the weld, and also helps to slow down the temperature drop of the heat-affected zone; by selecting a suitable stop welding cycle and an appropriate welding current, the shape design and size control of the weld can be achieved, providing convenience for the detection and inspection of the weld;

[0030] like Figure 5 As shown, a rib is welded between the support plate 31 and the connecting plate 32; the number of the ribs is N, N≥2; in this embodiment, which is the second implementation method of the present application, a rib is added between the support plate 31 and the connecting plate 32 to further enhance the rigidity and stability of the connector 3; the number of ribs is determined according to actual needs, but is at least two; the rib can effectively improve the bending and torsional stiffness of the connector 3, making it more stable under complex working conditions; by adjusting the number and position of the ribs, the connection requirements of the freeze dryer box 1 and the cold trap box 2 of different specifications and requirements can be flexibly responded to.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. The various components mentioned in the present invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in this utility model is defined by the appended claims and their equivalents.

Claims

1. A freeze-drying machine housing and cold trap connection structure, comprising a freeze-drying machine housing (1), a cold trap housing (2), a cold trap sealing plate (21), and a connecting piece (3), characterized in that: A plurality of connectors (3) are welded between the freeze-drying machine housing (1) and the cold trap sealing plate (21) in the cold trap housing (2); the plurality of connectors (3) are distributed in a longitudinal array and are evenly distributed between the freeze-drying machine housing (1) and the cold trap housing (2) at the same spacing; and the connectors (3) are in an "I"-shaped structure as a whole.

2. A freeze-drying machine housing and cold trap connection structure according to claim 1, characterized in that The connecting member (3) comprises a support plate (31) and a connecting plate (32), and there are two connecting plates (32); the two connecting plates (32) are respectively welded to the cold trap sealing plate (21) and the outer side wall of the freeze drying machine box (1); and a support plate (31) is integrally formed between the two connecting plates (32).

3. A freeze-drying machine housing and cold trap connection structure according to claim 2, characterized in that The support plate (31) and the connecting plate (32) are perpendicular to each other; the adjacent surface of the connecting plate (32) relative to the support plate (31) is set as an inclined surface.

4. A freeze-drying machine housing and cold trap connection structure according to claim 2, characterized in that The connection points between the connecting plate (32), the adjacent edges of the freeze-drying machine housing (1) and the cold trap housing (2), and the supporting plate (31) are all arc structures.

5. A freeze-drying machine housing and cold trap connection structure according to claim 2, characterized in that The connecting plate (32) is connected to the freeze-drying machine housing (1) and the cold trap housing (2) by welding, and a weld bead (4) is formed at the connection between the connecting plate (32) and the freeze-drying machine housing (1) and the cold trap housing (2).

6. A freeze-drying machine housing and cold trap connection structure according to claim 5, characterized in that The weld bead (4) is a fillet weld; the weld bead (4) can be formed continuously or discontinuously along the length direction of the connecting plate (32).

7. A freeze-drying machine housing and cold trap connection structure according to any one of claims 2 to 6, characterized in that Rib plates are welded between the support plate (31) and the connection plate (32); the number of the rib plates is N, where N is greater than or equal to 2.

Images