CN220135865U - Stirrer and stirring mechanism - Google Patents
Stirrer and stirring mechanism Download PDFInfo
- Publication number
- CN220135865U CN220135865U CN202321673494.0U CN202321673494U CN220135865U CN 220135865 U CN220135865 U CN 220135865U CN 202321673494 U CN202321673494 U CN 202321673494U CN 220135865 U CN220135865 U CN 220135865U
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- Prior art keywords
- stirring
- heat exchange
- stirrer
- flow channel
- blade
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- 238000003756 stirring Methods 0.000 title claims abstract description 97
- 230000007246 mechanism Effects 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000002245 particle Substances 0.000 claims abstract description 35
- 238000004108 freeze drying Methods 0.000 abstract description 16
- 238000001035 drying Methods 0.000 abstract description 5
- 238000000859 sublimation Methods 0.000 abstract description 4
- 230000008022 sublimation Effects 0.000 abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to the technical field of freeze-drying equipment, in particular to a stirrer and a stirring mechanism. The stirrer comprises a stirring shaft and a plurality of stirring paddles fixed on the stirring shaft, wherein the stirring paddles are used for extending into a front box to stir material particles; the stirring blade is curved, two ends of the stirring blade are fixedly connected with the stirring shaft, a blade heat exchange flow channel is arranged in the stirring blade, and the blade heat exchange flow channel is used for introducing heat exchange media; the stirring shaft is provided with a liquid inlet flow channel and a liquid outlet flow channel, the liquid inlet flow channel is used for allowing heat exchange media to enter the paddle heat exchange flow channel, and the liquid outlet flow channel is used for allowing the heat exchange media to flow out of the paddle heat exchange flow channel. When the stirrer is used, the stirring blade of the stirrer can exchange heat with the material particles and stir the material particles, so that the material particles are in a dynamic drying process, the quick sublimation of moisture in the material particles is facilitated, and the freeze-drying efficiency of the material particles is improved.
Description
Technical Field
The utility model relates to the technical field of freeze drying equipment, in particular to a stirrer and a stirring mechanism.
Background
The working principle of the freeze dryer is that substances containing a large amount of water are cooled and frozen into solid material particles in advance, and then the water is sublimated from the solid state to the gas state directly under the vacuum condition, and the water is separated from the materials. Under the production condition, substances which are easy to oxidize, volatilize and heat-sensitive can be stored, and the harmful effects of bacteria and enzymes can be inhibited, so that the biological and chemical structures and the activity of the product can be well reserved.
When the freeze dryer in the prior art is used for freeze drying, material particles are usually placed on a plate layer of a front box of the freeze dryer or in a bottle in the front box, and then the freeze drying is carried out.
However, when the front box of the freeze dryer is used for freeze-drying operation, the freeze-drying efficiency is low.
Disclosure of Invention
The utility model aims to provide a stirrer and a stirring mechanism, which can be used for stirring material particles in a front box of a freeze dryer, so that the sublimation speed of moisture in the material particles is increased, and the freeze drying efficiency is improved.
In order to solve the technical problems, the utility model provides a stirrer and a stirring mechanism.
The stirrer comprises a stirring shaft and a plurality of stirring paddles fixed on the stirring shaft, wherein the stirring paddles are used for extending into a front box to stir material particles;
the stirring blade is curved, two ends of the stirring blade are fixedly connected with the stirring shaft, a blade heat exchange flow passage is arranged in the stirring blade, and the blade heat exchange flow passage is used for introducing heat exchange media;
the stirring shaft is provided with a liquid inlet flow channel and a liquid outlet flow channel, the liquid inlet flow channel is used for allowing heat exchange media to enter the paddle heat exchange flow channel, and the liquid outlet flow channel is used for allowing the heat exchange media to flow out of the paddle heat exchange flow channel.
Further, blade heat exchange flow passages on a plurality of stirring blades are connected in parallel.
Further, the stirring blade is in a spiral line shape, and the rotation track of the stirring blade can encircle a spherical surface.
Further, the stirring shaft comprises a main shaft and a connecting pipeline assembly fixed on the main shaft, the liquid inlet flow channel and the liquid outlet flow channel are arranged on the main shaft, the paddle heat exchange flow channel comprises a near shaft end close to the main shaft and a far shaft end far away from the main shaft, the connecting pipeline assembly is communicated with the liquid inlet flow channel and the far shaft end, and the near shaft end is communicated with the liquid outlet flow channel.
Further, the connecting pipeline assembly comprises a plurality of first branch pipelines and a first converging pipeline, one end of each first branch pipeline is communicated with the liquid inlet channel, the other end of each first branch pipeline is communicated with the first converging pipeline, and the distal shaft sections of the blade heat exchange channels are communicated with the first converging pipeline.
Further, the first converging pipeline is a semi-annular pipeline.
Further, the connecting pipeline assembly further comprises a second converging pipeline and a second branch pipeline, the second converging pipeline is an annular pipeline, a plurality of first branch pipelines are simultaneously communicated with the second converging pipeline, and the second branch pipeline is communicated with the second converging pipeline and the first converging pipeline.
Further, a support rod for supporting the stirring blade is arranged between the stirring blade and the second confluence pipeline.
Further, the stirring paddles are three.
The utility model also provides a stirring mechanism which comprises a driving assembly and a stirrer, wherein the driving assembly is used for driving the stirrer to rotate, and the stirrer is the stirrer in any one of the technical schemes.
Compared with the prior art, the utility model has at least the following beneficial effects:
when the stirrer is used, the material particles are injected into the front box where the stirrer is located, then the heat exchange medium is introduced into the blade heat exchange flow channel of the stirrer, the stirrer is driven to rotate, the material particles are stirred by the stirrer, and in the process, the stirring blade of the stirrer can exchange heat with the material particles, so that the material particles are in a dynamic drying process, the quick sublimation of moisture in the material particles is facilitated, and the freeze-drying efficiency of the material particles is improved.
Drawings
FIG. 1 is a schematic view of a stirrer of the present utility model partially in section;
FIG. 2 is a schematic view of the stirrer of FIG. 1 from another perspective;
FIG. 3 is a schematic view of the stirrer of FIG. 1 with a portion of the main shaft removed;
FIG. 4 is a schematic structural view of an embodiment of a stirring mechanism according to the present utility model;
reference numerals:
210. a drive assembly; 211. a stirring bracket; 212. a driving motor; 213. a speed reducer; 214. a driving wheel; 215. driven wheel; 216. a chain; 217. a drum support wheel;
220. a main shaft; 221. a liquid inlet; 222. a liquid outlet; 223. a first branch line; 224. a first confluence line; 225. a second branch line; 226. a second confluence line; 227. a support rod;
230. stirring paddles.
Detailed Description
A stirrer and stirring mechanism of the present utility model will be described below in conjunction with the schematic drawings, in which preferred embodiments of the present utility model are shown, it being understood that one skilled in the art may modify the utility model described herein while still achieving the advantageous effects of the utility model. Accordingly, the following description is to be construed as broadly known to those skilled in the art and not as limiting the utility model.
The utility model is more particularly described by way of example in the following paragraphs with reference to the drawings. Advantages and features of the utility model will become more apparent from the following description and from the claims. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model.
The inventors have found that prior art freeze-dryers typically perform the freeze-drying operation by placing the material particles on a plate layer in the front box of the freeze-dryer or in a bottle in the front box. The whole process not only requires operators to transfer the material particles, but also generally requires a long time to obtain the required material due to the static state of the whole freeze-drying process, and the freeze-drying efficiency is low.
In order to improve the freeze-drying efficiency, the utility model provides the stirrer and the stirring mechanism, which can be used for stirring the material particles in the front box of the freeze dryer, so that the material particles are in a dynamic drying process in the front box, and the freeze-drying efficiency is improved. When the stirrer and the stirring mechanism are applied to the front box capable of rotating, the material particles are driven by the front box capable of rotating and the stirrer, so that a better drying effect can be achieved, and the freeze-drying efficiency of the material particles can be effectively improved.
An embodiment of the stirrer according to the first aspect of the present utility model will be described below with reference to fig. 1 to 3 of the accompanying drawings.
In one embodiment, as shown in fig. 1, 2 and 3, the agitator of the present utility model comprises an agitator shaft and a plurality of agitator paddles 230 secured to the agitator shaft, the agitator paddles 230 being configured to extend into the headbox to agitate the material particles.
The stirring blade 230 is curved, two ends of the stirring blade 230 are fixedly connected with the stirring shaft, a blade heat exchange flow channel is arranged in the stirring blade 230, and the blade heat exchange flow channel is used for introducing a heat exchange medium.
The stirring shaft is provided with a liquid inlet flow channel and a liquid outlet flow channel, the liquid inlet flow channel is used for allowing heat exchange media to enter the paddle heat exchange flow channel, and the liquid outlet flow channel is used for allowing the heat exchange media to flow out of the paddle heat exchange flow channel.
When the stirrer is used, the material particles are injected into the front box where the stirrer is located, then the heat exchange medium is introduced into the blade heat exchange flow channel of the stirrer, the stirrer is driven to rotate, the material particles are stirred by the stirrer, in the process, the stirring blade 230 of the stirrer can exchange heat with the material particles, the material particles are in a dynamic drying process, the quick sublimation of moisture in the material particles is facilitated, and the freeze-drying efficiency of the material particles is improved.
In one embodiment, the paddle heat exchange flow channels on the plurality of stirring paddles 230 are connected in parallel, that is, the inlets of the plurality of paddle heat exchange flow channels are all communicated with the liquid inlet 221 on the stirring shaft at the same time, and the outlets of the plurality of paddle heat exchange flow channels are all communicated with the liquid outlet 222 on the stirring shaft at the same time, so that the energy loss of the heat exchange medium in the stirring paddles 230 contacted by the material particles is smaller, and the stirring paddles 230 are favorable for more fully exchanging heat with the material particles.
In other embodiments, the paddle heat exchanging channels on the plurality of stirring paddles 230 may be connected in series, that is, the plurality of paddle heat exchanging channels are connected end to end in sequence, the inlet of the first paddle heat exchanging channel is connected to the liquid inlet 221 on the stirring shaft, and the outlet of the last paddle heat exchanging channel is connected to the liquid outlet 222 on the stirring shaft.
In one embodiment, the stirring blade 230 is in a spiral shape, and the rotation track of the stirring blade 230 can enclose a spherical surface. When the inner wall surface of the front box where the stirrer is located is a spherical inner surface, the stirring blade 230 can sweep every position of the inner surface of the front box during stirring, which is beneficial to fully stirring the material particles. In use, a small gap is formed between the stirring blade 230 and the spherical inner surface, so as to avoid interference between the stirring paddle and the spherical inner surface during stirring.
In one embodiment, the stirring shaft includes a main shaft 220 and a connecting pipeline assembly fixed on the main shaft 220, the liquid inlet channel and the liquid outlet channel are arranged on the main shaft 220, the blade heat exchange channel includes a proximal shaft end near the main shaft 220 and a distal shaft end far away from the main shaft 220, the connecting pipeline assembly is communicated with the liquid inlet channel and the distal shaft end, and the proximal shaft end is communicated with the liquid outlet channel.
Specifically, the liquid inlet channel and the liquid outlet channel extend along the axial direction of the main shaft 220, and a liquid inlet 221 and a liquid outlet 222, which are respectively communicated with the liquid inlet channel and the liquid outlet channel, are disposed on the outer circumferential surface of the main shaft 220 at intervals.
The connecting tube assembly is capable of introducing a heat exchange medium into the distal end of the paddle heat exchange flow channel, thereby allowing the heat exchange medium to flow completely through the stirring paddle 230, allowing the stirring paddle 230 to contact and exchange heat with more material particles.
In one embodiment, the connecting pipeline assembly comprises a plurality of first branch pipelines 223 and a first converging pipeline 224, one end of each first branch pipeline 223 is communicated with the liquid inlet flow channel, the other end of each first branch pipeline is communicated with the first converging pipeline 224, and the distal shaft sections of the blade heat exchange flow channels are all communicated with the first converging pipeline 224. The plurality of first branch pipes 223 simultaneously inject the heat exchange medium into the first confluence pipe 224, so that the supply speed of the heat exchange medium can be increased, and the heat exchange efficiency can be improved.
Preferably, in this embodiment, there are three stirring paddles 230, and correspondingly, there are three paddle heat exchange channels, and the first converging channel 224 is a semi-annular channel. In other embodiments, four stirring paddles 230 may be provided, and in this case, the first confluence line 224 may be a ring line. In other embodiments, only two stirring paddles 230 may be provided.
Further, in one embodiment, to facilitate the supply of the heat exchange medium to the first converging line 224, the connecting line assembly further includes a second converging line 226 and a second diverging line 225, wherein the second converging line 226 is an annular line, a plurality of the first diverging lines 223 simultaneously communicate with the second converging line 226, and the second diverging line 225 communicates with the second converging line 226 and the first converging line 224.
Specifically, the first branch pipes 223 have four, one ends of the four first branch pipes 223 are communicated with the liquid inlet channel, and the other ends thereof are communicated with the annular second converging pipe 226, so that the four first branch pipes 223 supply the heat exchange medium to the second converging pipe 226, and the two second branch pipes 225 are used for supplying the heat exchange medium in the second converging pipe 226 to the first converging pipe 224. In other embodiments, the second branch line 225 may be provided with three or four.
In one embodiment, in order to stably perform the stirring operation by the stirring blade 230, a supporting rod 227 is disposed between the stirring blade 230 and the second confluence pipe 226, and the supporting rod 227 is used for supporting the stirring blade 230, so as to prevent the stirring blade 230 from being bent or separated from the main shaft 220 and the first confluence pipe 224 due to a large stress during stirring.
An agitation mechanism according to an embodiment of the second aspect of the present utility model will be described below with reference to fig. 4 of the accompanying drawings.
The stirring mechanism of the present utility model includes a driving assembly 210 and a stirrer, where the driving assembly 210 is used to drive the stirrer to rotate, and the structure of the stirrer is the same as that of the stirrer in the embodiment of the first aspect, and is not described herein.
In this embodiment, the driving assembly 210 includes a stirring bracket 211, a driving motor 212, a speed reducer 213, a driving wheel 214, a driven wheel 215, a chain 216, and a drum supporting wheel 217. The driving motor 212 is fixed on the stirring bracket 211, the input end of the speed reducer is in transmission connection with the driving wheel 214, the output end of the speed reducer is in transmission connection with the driving wheel 214, the driving wheel 214 is in transmission connection with the driven wheel 215 through the chain 216, and the driven wheel 215 is fixedly connected with the main shaft 220 of the stirrer. In order to support the agitator, the drum support wheel 217 is rotatably provided on the agitation bracket 211 and supports the driven wheel 215. In other embodiments, the driven wheel 215 may not be provided, and the main shaft 220 of the agitator may be directly driven to rotate by the driving wheel 214.
When in use, the motor is started, and the motor drives the stirrer to rotate through the structures of the speed reducer, the driving wheel 214, the driven wheel 215 and the like.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A stirrer, which is characterized by comprising a stirring shaft and a plurality of stirring paddles fixed on the stirring shaft, wherein the stirring paddles are used for extending into a front box to stir material particles;
the stirring blade is curved, two ends of the stirring blade are fixedly connected with the stirring shaft, a blade heat exchange flow passage is arranged in the stirring blade, and the blade heat exchange flow passage is used for introducing heat exchange media;
the stirring shaft is provided with a liquid inlet flow channel and a liquid outlet flow channel, the liquid inlet flow channel is used for allowing heat exchange media to enter the paddle heat exchange flow channel, and the liquid outlet flow channel is used for allowing the heat exchange media to flow out of the paddle heat exchange flow channel.
2. The mixer of claim 1 wherein blade heat exchange flow channels on a plurality of said mixing blades are connected in parallel.
3. The stirrer according to claim 1, wherein the stirring blade is in a spiral line shape, and a rotation locus of the stirring blade can be enclosed into a spherical surface.
4. A mixer according to any one of claims 1 to 3, wherein the mixer shaft comprises a main shaft and a connecting pipe assembly fixed on the main shaft, the liquid inlet flow passage and the liquid outlet flow passage are arranged on the main shaft, the blade heat exchange flow passage comprises a near shaft end close to the main shaft and a far shaft end far away from the main shaft, the connecting pipe assembly is communicated with the liquid inlet flow passage and the far shaft end, and the near shaft end is communicated with the liquid outlet flow passage.
5. The mixer of claim 4 wherein said connecting conduit assembly includes a plurality of first branch conduits and a first converging conduit, said first branch conduits having one end in communication with said inlet flow passage and another end in communication with said first converging conduit, and a plurality of distal shaft sections of said paddle heat exchange flow passages each in communication with said first converging conduit.
6. The mixer of claim 5 wherein said first converging conduit is a semi-annular conduit.
7. The mixer of claim 5, wherein the connecting line assembly further comprises a second converging line and a second diverging line, the second converging line being an annular line, a plurality of the first diverging lines simultaneously communicating with the second converging line, the second diverging line communicating with the second converging line and the first converging line.
8. The stirrer according to claim 7, wherein a support rod for supporting the stirring blade is provided between the stirring blade and the second confluence line.
9. A mixer according to any one of claims 1 to 3, wherein there are three mixing paddles.
10. A stirring mechanism comprising a drive assembly and a stirrer, the drive assembly being arranged to drive the stirrer in rotation, the stirrer being as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321673494.0U CN220135865U (en) | 2023-06-29 | 2023-06-29 | Stirrer and stirring mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321673494.0U CN220135865U (en) | 2023-06-29 | 2023-06-29 | Stirrer and stirring mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220135865U true CN220135865U (en) | 2023-12-05 |
Family
ID=88954593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321673494.0U Active CN220135865U (en) | 2023-06-29 | 2023-06-29 | Stirrer and stirring mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220135865U (en) |
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2023
- 2023-06-29 CN CN202321673494.0U patent/CN220135865U/en active Active
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| GR01 | Patent grant |