CN111486666B - Shelf for vacuum freeze dryer - Google Patents
Shelf for vacuum freeze dryer Download PDFInfo
- Publication number
- CN111486666B CN111486666B CN202010306850.XA CN202010306850A CN111486666B CN 111486666 B CN111486666 B CN 111486666B CN 202010306850 A CN202010306850 A CN 202010306850A CN 111486666 B CN111486666 B CN 111486666B
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- CN
- China
- Prior art keywords
- plate body
- opening
- hole
- shelf
- vacuum freeze
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
Abstract
The scheme discloses a shelf for a vacuum freeze dryer, which belongs to the field of vacuum freeze dryers and comprises a plate body with an opening on one side, wherein a backflow hole communicated with the inside of the plate body is formed in one end, deviating from the opening, of the plate body; the opening side fixedly connected with regulating block of plate body, the both sides of regulating block are equipped with the feed liquor hole respectively and go out the liquid hole, go out the airtight intercommunication of the opening part of liquid hole and plate body, go out the length of the length more than or equal to plate body opening part in liquid hole, be equipped with in the regulating block with go out the guiding gutter of liquid hole and feed liquor hole intercommunication, the length more than or equal to of guiding gutter goes out the length in liquid hole. The shelf reduces the use of raw materials at the positions of the steel pipes and the cavity at the opening of the plate body, and greatly reduces the manufacturing cost of the shelf; in addition, because the refrigerant flows in the plate body opening in a balanced manner, the heat difference between adjacent steel pipes in the prior art does not exist, and the drying of the materials is more balanced.
Description
Technical Field
The invention belongs to the field of vacuum freeze dryers, and particularly relates to a shelf for a vacuum freeze dryer.
Background
The vacuum freeze-drying machine refers to an apparatus for freezing a freeze-drying aqueous substance or solution at a low temperature in advance and then dehydrating the substance in a vacuum environment to obtain a dried product. Vacuum freeze dryers generally include a refrigeration system, a vacuum system and a drying chamber; the shelf is arranged in the drying chamber and comprises a stainless steel plate and a plurality of steel pipes welded on the stainless steel plate and used for conveying a refrigerant, the steel pipes are arranged side by side, no gap exists between every two adjacent steel pipes, and the refrigerant is generally liquid. When the device is used, materials with moisture are placed on the shelf for pre-freezing, and then the temperature of the shelf is controlled by vacuumizing and introducing a refrigerant into the steel pipe for sublimation, so that ice on the materials directly enters a gas state from a solid state and is dried into a powdery solid.
In the practical use process, because the length of the partition plate is generally smaller, the temperature reduction amount of the refrigerant after flowing through the partition plate once can be ignored, but the following problems exist in the process of welding the steel pipe on the stainless steel plate without gaps: 1. the welding difficulty is increased due to more welded steel pipes; 2. because the stress deformation of each steel pipe after welding is different, the flatness between the steel pipes is poor, and the drying of materials on the steel pipes is uneven; 3. although each steel pipe is arranged without gaps, the thickness of the side wall of each adjacent steel pipe, which is in contact with the steel pipe, is twice that of a single steel pipe, so that the temperature of the position is different from that of the position of the single steel pipe, and uneven drying of the materials can be caused.
In view of the above problem, patent application No. CN201310174302.6 discloses a shelf for a vacuum freeze dryer, which comprises a plate body, wherein a fluid channel is arranged in the plate body, an inlet and an outlet of the fluid channel are exposed at the side edge of the plate body, the fluid channel is formed by integrally connecting continuous longitudinal stainless steel tubes, and the plate body is formed by casting aluminum alloy on the fluid channel. The distance between two adjacent stainless steel pipes is 20-40 mm. The setting of this shelf has avoided a large amount of weldment work to the steel pipe, but owing to adopt the nonrust steel pipe of body coupling, and the interval between two adjacent nonrust steel pipes is 20mm ~ 40mm, has further increaseed the temperature difference before adjacent nonrust steel pipe and other positions, leads to the drying of material more unbalanced. In addition, the stainless steel pipes in the plate body still consume more materials.
Disclosure of Invention
The invention aims to provide a shelf for a vacuum freeze dryer, which aims to solve the problem that the shelf in the prior art adopts a steel pipe for refrigerant transmission, so that the drying of materials on the same shelf is unbalanced.
The shelf for the vacuum freeze dryer comprises a plate body with an opening on one side, wherein a backflow hole communicated with the inside of the plate body is formed in one end, away from the opening, of the plate body; the opening side fixedly connected with regulating block of plate body, the both sides of regulating block are equipped with the feed liquor hole respectively and go out the liquid hole, go out the airtight intercommunication of the opening part of liquid hole and plate body, go out the length of the length more than or equal to plate body opening part in liquid hole, be equipped with in the regulating block with go out the guiding gutter of liquid hole and feed liquor hole intercommunication, the length more than or equal to of guiding gutter goes out the length in liquid hole.
The working principle of the scheme is as follows: during the use, the shelf in this scheme passes through the plate body and the transmission of regulating block realization to the refrigerant, because realize the transmission to the refrigerant through setting up the opening on the plate body, has reduced the use of steel pipe, and meanwhile, the opening part is owing to be the cavity, has further reduced the use of plate body material. The regulating block is provided with the diversion trench, and the length of the diversion trench is more than or equal to that of the liquid outlet hole, so that the refrigerant is gathered upwards at the bottom of the diversion trench after entering the diversion trench through the liquid inlet hole, and flows uniformly from the liquid outlet hole to the opening of the plate body when gathered to the top of the diversion trench; the length of the liquid outlet hole is larger than or equal to that of the opening of the plate body, so that the refrigerant entering the opening of the plate body is uniformly spread, and the material on the plate body is uniformly dried.
The beneficial effect of this scheme: 1. the use of raw materials at the positions of the steel pipes and the cavities at the openings of the plate body is reduced, and the manufacturing cost of the shelf is greatly reduced. 2. Because the refrigerant flows in the plate body opening in a balanced manner, the problem that in the prior art, the refrigerant flow is inconsistent between the interior of the steel pipe and the wall body of the steel pipe, or the uncovered position of the steel pipe does not have the refrigerant to pass through does not exist, and the drying of the material is more balanced.
Furthermore, the diversion trench is n-shaped. Set up the guiding gutter into "pi" font, can prolong the flux of refrigerant at the guiding gutter, and then make it gather more in the guiding gutter, it is more even to flow into the refrigerant in liquid hole from the guiding gutter like this, and then make the refrigerant evenly spread out in the opening of plate body, realizes the more balanced drying of material on the plate body.
Furthermore, a plurality of liquid guide holes are uniformly distributed on the adjusting block and are communicated with flow guide channels on two sides of the n-shaped flow guide groove. Through setting up the drain hole for the refrigerant is more balanced from one side passageway of the guiding gutter of "pi" font to the flow of opposite side passageway, reduces the refrigerant because of the temperature decline that the route of flowing through lengthens and lead to.
Further, the plate body is obtained by casting. The plate body is produced by adopting a casting mode, on one hand, the waste of materials at the opening can be reduced, on the other hand, the opening is directly formed by casting, the trouble of subsequent processing of the opening is avoided, and the production steps of the plate body are simplified.
Furthermore, the partition board for the vacuum freeze dryer further comprises a connecting rod, the board body is provided with a plurality of blocks, and the plurality of blocks are sequentially connected onto the connecting rod in a sliding manner from top to bottom. The plate body sets up polylith and sliding connection on the connecting rod, places the material on the plate body, through the plate body of below on the adjustment for the upper and lower surface of material all contacts with the plate body, is favorable to accelerating the drying rate and the equilibrium to the material.
Furthermore, fixedly connected with shunt tubes on the connecting rod, be equipped with the connecting hole on the shunt tubes and a plurality of shunt holes with the connecting hole intercommunication, shunt hole intercommunication has the hose that is used for connecting the feed liquor hole. The refrigerant enters the shunting holes from the connecting holes and then enters the liquid inlet holes on the adjusting blocks through the hoses, so that the refrigerant uniformly enters the openings of the plate bodies of all layers.
Furthermore, the connecting rod and the shunt tubes are respectively provided with two hoses, and the hoses connected to the two shunt tubes are respectively connected with the liquid inlet hole and the liquid outlet hole. The refrigerant enters the liquid inlet hole from the shunt pipe on one side through the hose, flows out of the liquid outlet hole after flowing through the opening of the plate body, and then flows out of the connecting hole of the shunt pipe on the other side; the operation is more convenient.
Furthermore, the hoses are all provided with flow control valves. Through the setting of accuse stream valve, when not needing to carry the refrigerant to all plate bodys, close and do not need partial accuse stream valve, the refrigerant will not pass through this plywood body, and the refrigerant volume of the plate body opening part circulation on other layers is bigger, and the opening is certain, then the flow velocity of cold flow accelerates, is favorable to accelerating the cooling rate to the material.
Drawings
Fig. 1 is a front sectional view of a shelf for a vacuum freeze-dryer in embodiment 1 of the present invention;
FIG. 2 is a top cross-sectional view of the conditioning block of FIG. 1;
fig. 3 is a front view of a shelf for a vacuum freeze-dryer in embodiment 2 of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: plate body 1, opening 11, backward flow hole 12, regulating block 2, guiding gutter 21, drain hole 22, play liquid hole 23, feed liquor hole 24, connecting rod 3, shunt tubes 4, hose 5, connector 6, accuse flow valve 7, bolt 8.
Example 1 is substantially as shown in figures 1-2: a shelf for a vacuum freeze dryer comprises a plate body 1 with an opening 11 on one side, wherein a backflow hole 12 communicated with the inside of the plate body 1 is formed in one end of the plate body 1, which is far away from the opening 11; an adjusting block 2 is fixedly connected to the side of an opening 11 of a plate body 1, a liquid inlet hole 24 and a liquid outlet hole 23 are respectively arranged on two sides of the adjusting block 2, the liquid outlet hole 23 is hermetically communicated with the opening 11 of the plate body 1, the length of the liquid outlet hole 23 is greater than or equal to that of the opening 11 of the plate body 1, the width of the liquid outlet hole 23 is greater than or equal to that of the opening 11 of the plate body 1, a diversion trench 21 communicated with the liquid outlet hole 23 and the liquid inlet hole 24 is arranged in the adjusting block 2, the diversion trench 21 forms a diversion channel for refrigerant circulation, and the length of the diversion trench 21 is greater than or equal to that of the liquid outlet hole 23; the diversion trench 21 is n-shaped; a plurality of liquid guide holes 22 are uniformly distributed on the adjusting block 2, and two ends of the plurality of liquid guide holes 22 are communicated with the n-shaped diversion trenches 21; the plate body 1 is obtained by casting.
The closed communication in the application document means that two connecting objects are communicated with each other, and the joint keeps a sealed state, so that leakage is avoided. Plate body 1 and regulating block 2 integrated into one piece effect are better.
When the cooling device is used, materials are placed on the plate body 1 and located right above the opening 11 of the plate body 1, a refrigerant enters the diversion trench 21 from the liquid inlet hole 24, after entering the diversion trench 21, one part of the refrigerant flows from the diversion channel, and the other part of the refrigerant flows into the diversion channel on the other side from the diversion channel close to the liquid inlet hole 24 through the liquid guide hole 22. The refrigerant is accumulated from the bottom of the diversion trench 21 upwards, when the diversion trench 21 is completely filled with the refrigerant, the refrigerant enters the opening 11 of the plate body 1 from the liquid outlet hole 23 and flows uniformly in the opening 11, and the refrigerant flows through the opening 11 and then flows out from the return hole 12. When the refrigerant flows through the opening 11 of the plate body 1, the material on the plate body 1 is dried by the heat of the refrigerant conducted by the plate body 1, and the material above the opening 11 of the plate body 1 is heated uniformly, so that the drying process of the material is more uniform.
A shelf for a vacuum freeze-dryer in embodiment 2 is substantially as shown in fig. 3, and is different from embodiment 1 only in that: the plate body 1 is provided with a plurality of blocks, the plate body 1 and the adjusting block 2 are both provided with limiting holes in the vertical direction, the plate body 1 is provided with threaded holes communicated with the limiting holes, the threaded holes are connected with bolts 8, and the threaded holes and the liquid outlet holes 23 are positioned on the same side of the plate body 1; the partition board for the vacuum freeze dryer also comprises two flow dividing mechanisms, each flow dividing mechanism comprises a connecting rod 3 and a flow dividing pipe 4 fixedly connected to the connecting rod 3, each flow dividing pipe 4 is provided with a connecting hole and a plurality of flow dividing holes communicated with the connecting holes, each flow dividing hole is communicated with a hose 5 used for connecting a liquid inlet hole 24, each hose 5 is provided with a flow control valve 7, and the connecting hole is connected with a connector 6; two connecting rods 3 are respectively connected with the plate body 1 and the adjusting block 2 through limiting holes and are fixed through bolts 8.
When the device is used, the hoses 5 on the two shunt tubes 4 are correspondingly connected with the liquid inlet end and the liquid outlet end, the flow control valve 7 on the hose 5 which does not need to circulate the refrigerant is closed, the output end of the refrigerant is connected with one connector 6, then the refrigerant enters the liquid inlet hole 24 through the hose 5 connected with the refrigerant, finally flows out of the liquid outlet hole 23 and then flows out of the other connector 6. In the use, can be through revolving soon bolt 8, when unscrewing bolt 8, can reciprocate plate body 1, and then adjust the distance between the square plate body 1 from top to bottom, after adjusting the distance, screw up bolt 8 again, make bolt 8 support and hold plate body 1 to it is fixed.
Claims (4)
1. The utility model provides a shelf for vacuum freeze-dryer which characterized in that: comprises a plate body with an opening at one side, wherein a backflow hole communicated with the inside of the plate body is arranged at one end of the plate body, which is far away from the opening; the opening side of the plate body is fixedly connected with an adjusting block, a liquid inlet and a liquid outlet are respectively arranged on two sides of the adjusting block, the liquid outlet is hermetically communicated with the opening of the plate body, the length of the liquid outlet is greater than or equal to that of the opening of the plate body, a diversion trench communicated with the liquid outlet and the liquid inlet is arranged in the adjusting block, and the length of the diversion trench is greater than or equal to that of the liquid outlet; the diversion trench is n-shaped; a plurality of liquid guide holes are uniformly distributed on the adjusting block, and two ends of the plurality of liquid guide holes are communicated with the flow guide grooves; the partition board for the vacuum freeze dryer also comprises a plurality of connecting rods, and the plurality of plate bodies are sequentially connected onto the connecting rods in a sliding manner from top to bottom; the connecting rod is fixedly connected with a shunt pipe, a connecting hole and a plurality of shunt holes communicated with the connecting hole are formed in the shunt pipe, and the shunt holes are communicated with hoses used for being connected with the liquid inlet holes.
2. The shelf for a vacuum freeze dryer according to claim 1, wherein: the plate body is obtained by casting.
3. The shelf for a vacuum freeze dryer according to claim 2, wherein: the connecting rod and the shunt tubes are both provided with two, and the hoses connected to the two shunt tubes are respectively connected with the liquid inlet hole and the liquid outlet hole.
4. The shelf for a vacuum freeze dryer according to claim 3, wherein: and the hoses are provided with flow control valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010306850.XA CN111486666B (en) | 2020-04-17 | 2020-04-17 | Shelf for vacuum freeze dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010306850.XA CN111486666B (en) | 2020-04-17 | 2020-04-17 | Shelf for vacuum freeze dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111486666A CN111486666A (en) | 2020-08-04 |
| CN111486666B true CN111486666B (en) | 2021-12-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010306850.XA Active CN111486666B (en) | 2020-04-17 | 2020-04-17 | Shelf for vacuum freeze dryer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111486666B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231134A (en) * | 2007-11-27 | 2008-07-30 | 上海东富龙科技有限公司 | Automatic guiding carriage device |
| EP2320184A1 (en) * | 2008-07-10 | 2011-05-11 | Ulvac, Inc. | Freeze-drying device and freeze-drying method |
| CN206572873U (en) * | 2017-03-08 | 2017-10-20 | 银川利智信知识产权咨询服务有限公司 | Lyophilized unification vacuum freeze drier |
| CN206583224U (en) * | 2017-02-23 | 2017-10-24 | 安徽健丰节能技术有限公司 | One kind wadding streaming freeze drier |
| CN110044172A (en) * | 2019-05-08 | 2019-07-23 | 宁波新芝冻干设备股份有限公司 | Material placing rack for freeze dryer |
-
2020
- 2020-04-17 CN CN202010306850.XA patent/CN111486666B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101231134A (en) * | 2007-11-27 | 2008-07-30 | 上海东富龙科技有限公司 | Automatic guiding carriage device |
| EP2320184A1 (en) * | 2008-07-10 | 2011-05-11 | Ulvac, Inc. | Freeze-drying device and freeze-drying method |
| CN206583224U (en) * | 2017-02-23 | 2017-10-24 | 安徽健丰节能技术有限公司 | One kind wadding streaming freeze drier |
| CN206572873U (en) * | 2017-03-08 | 2017-10-20 | 银川利智信知识产权咨询服务有限公司 | Lyophilized unification vacuum freeze drier |
| CN110044172A (en) * | 2019-05-08 | 2019-07-23 | 宁波新芝冻干设备股份有限公司 | Material placing rack for freeze dryer |
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| Publication number | Publication date |
|---|---|
| CN111486666A (en) | 2020-08-04 |
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