Freeze dryer
By designing a freeze dryer with a detachable ring and plate structure and a graphite plate insulation layer, the problem of inconvenient maintenance of vacuum components was solved, and a low-cost and efficient maintenance process was achieved.
Patent Information
- Application Number
- CN202520480726.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-03-19
AI Technical Summary
The vacuum components of existing freeze dryers are inconvenient to maintain, the seals wear out quickly, and the maintenance costs are high.
The design incorporates a detachable ring and plate structure, with the sealing ring mounted on the ring for easy and quick replacement. It combines a graphite plate and a porous silicon-based heat insulation layer to reduce heat transfer and uses a hydraulic cylinder to press the vacuum cover.
It reduces equipment maintenance costs and time, and improves maintenance efficiency.
Smart Images
Figure CN223814864U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to drying machine technical field, especially freeze-drying machine. BACKGROUND
[0002] The freeze-drying machine is a kind of equipment that realizes the drying of material by freezing the water in material and then sublimating in vacuum environment.The technology has the advantages of good drying effect, long shelf life and less loss of nutritional components;In the cosmetic industry, freeze-drying machine is mainly used for drying raw materials and finished products of cosmetics.For example, many plant extracts, animal components and the like need to be dried for storage and use.In the prior art, the raw materials to be freeze-dried are placed in the drying machine to freeze the water, and the heat generated inside is discharged from the heat dissipation assembly.
[0003] The prior art has the following defects: the vacuum part of the freezer cannot be quickly repaired. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a freeze-drying machine to solve the problems of the prior art.
[0005] The above technical purpose of the utility model is realized by the following technical scheme:
[0006] A freeze-drying machine, comprising a workbench, a vacuum chamber is arranged at the top center of the workbench, a heat insulation pad is arranged at the inner bottom of the vacuum chamber, a heating plate is arranged at the top of the heat insulation pad and located inside the vacuum chamber, the vacuum chamber comprises a bottom plate and a vacuum cover, a groove is arranged at the top end of the periphery of the bottom plate, a sealing ring is fixedly arranged in the groove, the vacuum cover is detachably inserted at the top of the bottom plate, the bottom end periphery of the vacuum cover is attached to the sealing ring, the bottom plate comprises a circular ring and a circular plate arranged concentrically, the circular ring is sleeved on the circular plate, a first ring groove is arranged at the inner wall of the circular ring, a second ring groove corresponding to the first ring groove is arranged at the outer wall of the circular plate, an O-shaped ring with an inner hollow is arranged in the first ring groove and the second ring groove, a plurality of first threaded holes are uniformly arranged at the top end of the circular ring in axial direction, a plurality of second threaded holes are uniformly arranged at the top end periphery of the circular plate in axial direction, a cover plate is arranged at the top of the bottom plate, a sealing ring is arranged at the bottom of the cover plate, and the cover plate is bolted and fixed at the top of the bottom plate through bolts, first threaded holes and second threaded holes.
[0007] By adopting the above technical scheme, because the vacuum chamber of the freeze dryer needs to be frequently opened and closed, the sealing element of the vacuum chamber wears very fast, so the sealing element needs to be frequently replaced, because the sealing ring of the sealing element is required to be installed and fixed, so in order to replace faster and save replacement cost, the bottom plate is arranged as a ring and a plate which can be disassembled from each other, the sealing ring is arranged on the ring, and only the ring needs to be quickly replaced when replacement is needed, so that the maintenance cost and maintenance time of the equipment are reduced.
[0008] In a further embodiment, the heat insulation pad comprises a graphite plate and a heat insulation layer, the heat insulation layer is fixedly bonded on the top of the plate, the graphite plate is arranged on the top of the heat insulation layer, and the heat insulation layer is a porous silicon-based heat insulation material.
[0009] In a further embodiment, the O-shaped ring is internally provided with a supporting spring.
[0010] In a further embodiment, the top of the vacuum cover is provided with a suction pipeline.
[0011] In a further embodiment, one side of the top of the workbench is provided with a hydraulic cylinder, a pressing strip is fixedly installed on the telescopic rod of the hydraulic cylinder, and the pressing strip is used for pressing the vacuum cover on the bottom plate.
[0012] In a further embodiment, the top end of the sealing ring is provided with a receiving groove corresponding to the bottom end of the vacuum cover, and the inner wall of the receiving groove is provided with an arc-shaped protrusion.
[0013] In summary, the utility model has the following beneficial effects:
[0014] 1. By arranging the bottom plate as a ring and a plate which can be disassembled from each other, and arranging the sealing ring on the ring, only the ring needs to be quickly replaced when replacement is needed, so that the maintenance cost and maintenance time of the equipment are reduced. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is the overall structure schematic view of the utility model;
[0016] Figure 2 is the structure schematic view of the bottom plate for embodying the utility model.
[0017] In the figure, 1, workbench; 2, vacuum chamber; 21, bottom plate; 22, vacuum cover; 211, ring; 212, plate; 3, heat insulation pad; 4, heating plate; 5, sealing ring. DETAILED DESCRIPTION
[0018] The utility model will be further described in detail in combination with the drawings.
[0019] Wherein identical parts are denoted by identical reference numerals. It is noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the Figure 1 directions in the drawings, the terms "bottom" and "top", "inner" and "outer" refer to the directions towards or away from a particular component geometry. Furthermore, the terms "first", "second", etc. are used herein only to describe different features and do not imply or imply a relative importance of the features so designated. Thus, a feature identified as "first" or "second" can implicitly or explicitly include one or more of the features so designated. In the description of the present specification, the meaning of "a plurality" is two or more, unless otherwise explicitly specified.
[0020] Example 1:
[0021] As Figures 1-2As shown, a freeze dryer, including a workbench 1, the top center of the workbench 1 is provided with a vacuum chamber 2, the inner bottom of the vacuum chamber 2 is provided with a heat insulation pad 3, the top of the heat insulation pad 3 is provided with a heating plate 4 located inside the vacuum chamber 2, the vacuum chamber 2 includes a bottom plate 21 and a vacuum cover 22, the top end of the bottom plate 21 is provided with a groove, the groove is fixedly provided with a sealing ring 5, the vacuum cover 22 is detachably inserted on the top of the bottom plate 21, the bottom end of the vacuum cover 22 is matched with the sealing ring 5, the bottom plate 21 includes a circular ring 211 and a circular plate 212 arranged concentrically, the circular ring 211 is sleeved on the circular plate 212, the inner wall of the circular ring 211 is provided with a first ring groove at the middle position, the outer wall of the circular plate 212 is provided with a second ring groove corresponding to the first ring groove, the first ring groove and the second ring groove are provided with the same hollow O-shaped ring, the top end of the circular ring 211 is uniformly provided with a plurality of first threaded holes in the axial direction, the top end of the circular plate 212 is uniformly provided with a plurality of second threaded holes in the axial direction, the top of the bottom plate 21 is provided with a cover plate, the bottom of the cover plate is provided with a sealing ring, the cover plate is bolted and fixed on the top of the bottom plate 21 through the first threaded hole and the second threaded hole, the heat insulation pad 3 includes a graphite plate and a heat insulation layer, the heat insulation layer is adhered and fixed on the top of the circular plate 212, the graphite plate is arranged on the top of the heat insulation layer, the heat insulation layer is made of porous silicon-based heat insulation material, the existing porous silica gel material can reduce the thermal conductivity to 0.012, avoid the excessive heat of the heating plate 4 from being transmitted to the bottom plate, so that the sealing ring is plastically deformed or denatured due to long-time heating, the inside of the O-shaped ring is provided with a supporting spring, the top of the vacuum cover 22 is provided with a suction pipe, one side of the top of the workbench 1 is provided with a hydraulic cylinder, a pressing strip is fixedly installed on the telescopic rod of the hydraulic cylinder, the pressing strip is used to press the vacuum cover 22 tightly on the bottom plate 21, the top end of the sealing ring 5 is provided with a containing groove corresponding to the bottom end of the vacuum cover 22, and the inner wall of the containing groove is provided with an arc-shaped protrusion, in use, as the internal vacuum degree increases, the sealing ring deforms, because the arc-shaped protrusion is arranged, the contact surface between the sealing ring and the vacuum cover 22 will become more and more close.
[0022] The specific implementation process is: because the vacuum chamber of the freeze dryer needs to be frequently opened and closed, the sealing element of the vacuum chamber wears very fast, which requires frequent replacement of the sealing element, because the installation and fixation of the sealing ring of the sealing element have requirements, in order to replace it faster and save the replacement cost, the bottom plate is arranged as a circular ring and a circular plate which can be detached from each other, the sealing ring is arranged on the circular ring, when replacement is needed, only the circular ring needs to be quickly replaced, thereby reducing the maintenance cost and maintenance time of the equipment.
[0023] In the embodiments disclosed by the utility model, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected; "connection" can be direct connection, or indirect connection through an intermediate medium.
[0024] The specific embodiments are merely an explanation of the utility model, and are not a limitation of the utility model, and a person skilled in the art can make modifications to the embodiments without creative contribution according to the needs after reading the specification, but as long as the modifications are within the scope of the claims of the utility model, they are protected by the patent law.
Claims
1. A freeze-dryer characterised in that: The workbench (1) is provided with a vacuum chamber (2) at the top center position, the inner bottom of the vacuum chamber (2) is provided with a heat insulation pad (3), the top of the heat insulation pad (3) is provided with a heating plate (4) inside the vacuum chamber (2), the vacuum chamber (2) comprises a bottom plate (21) and a vacuum cover (22), the top end of the bottom plate (21) is provided with a groove, the groove is fixedly provided with a sealing ring (5), the vacuum cover (22) is detachably inserted on the top of the bottom plate (21), the bottom end of the vacuum cover (22) is matched with the sealing ring (5), the bottom plate (21) comprises a circular ring (211) and a circular plate (212) arranged concentrically, the circular ring (211) is sleeved on the circular plate (212), the inner wall of the circular ring (211) is provided with a first ring groove at the middle position, the outer wall of the circular plate (212) is provided with a second ring groove corresponding to the first ring groove, the first ring groove and the second ring groove are provided with the same O-shaped ring with an inner cavity, the top end of the circular ring (211) is uniformly provided with a plurality of first threaded holes in the axial direction, the top end of the circular plate (212) is uniformly provided with a plurality of second threaded holes in the axial direction, the top of the bottom plate (21) is provided with a cover plate, the bottom of the cover plate is provided with a sealing ring, and the cover plate is bolted and fixed on the top of the bottom plate (21) through the first threaded holes and the second threaded holes.
2. A freeze-dryer as claimed in claim 1, characterized in that: The heat insulation pad (3) comprises a graphite plate and a heat insulation layer, the heat insulation layer is adhered and fixed on the top of the circular plate (212), the graphite plate is arranged on the top of the heat insulation layer, and the heat insulation layer is made of porous silicon-based heat insulation material.
3. A freeze-dryer according to claim 1, characterised in that: The inner part of the O-shaped ring is provided with a supporting spring.
4. A freeze-dryer according to claim 1, characterised in that: The top of the vacuum cover (22) is provided with a suction pipe.
5. A freeze-dryer according to claim 1, characterised in that: One side of the top of the workbench (1) is provided with a hydraulic cylinder, a pressing strip is fixedly installed on the telescopic rod of the hydraulic cylinder, and the pressing strip is used for pressing the vacuum cover (22) tightly on the bottom plate (21).
6. A freeze-dryer according to claim 1, characterised in that: The top end of the sealing ring (5) is provided with a containing groove corresponding to the bottom end of the vacuum cover (22), and the inner wall of the containing groove is provided with an arc-shaped protrusion.