CN213610216U - A multistage filtration system for producing fruit vegetables dry powder - Google Patents
A multistage filtration system for producing fruit vegetables dry powder Download PDFInfo
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- CN213610216U CN213610216U CN202022299346.XU CN202022299346U CN213610216U CN 213610216 U CN213610216 U CN 213610216U CN 202022299346 U CN202022299346 U CN 202022299346U CN 213610216 U CN213610216 U CN 213610216U
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Abstract
The utility model discloses a multistage filtration system for producing fruit and vegetable dry powder, which comprises a pretreatment system, a pretreatment system and an ultrafiltration system, wherein a first output end of the pretreatment system is communicated with a first input end of the pretreatment system through a pipeline, and a first output end of the pretreatment system is communicated with an input end of the ultrafiltration system through a pipeline; when a multistage filtering system is used, a large amount of fruit and vegetable juice of fresh fruits and vegetables is squeezed and separated, the freeze-drying load of the fruits and vegetables is reduced, the cost for producing the fruit and vegetable dry powder is reduced, and meanwhile, the juice of the fresh fruits and vegetables can be subjected to multistage filtering and a certain blending process to produce the fruit and vegetable juice health-care drink.
Description
Technical Field
The utility model relates to a food, health products processing field especially relate to a multistage filtration system for producing fruit vegetables dry powder.
Background
The fruit and vegetable is delicious, contains abundant vitamins and elements required by human body, and is a food suitable for people of all ages. If a large amount of juicy and nutrient-rich fruit and vegetable products are not sold, stored and processed in time, overstock, dry shrinkage and even deterioration and rot can occur, and economic loss is caused. In order to eat various fruits and vegetables all the year round, the fruits and vegetables are made into various fruit and vegetable products, which are currently hot in advanced countries in the world. The direct processing of fresh fruits and vegetables to produce fruit and vegetable powder is a processing mode appearing in recent years;
the existing production process of fruit and vegetable dry powder has the following problems:
1. the production of fruit and vegetable powder generally comprises drying and dehydrating fruit and vegetable raw materials, and then further crushing. The drying method of the fruits and vegetables mainly comprises hot air drying and vacuum freeze drying, and the latter method greatly preserves the nutrient components, color and flavor of the fruits and vegetables due to the drying in the freezing and vacuum states, so that the high-grade fruit and vegetable powder on the market is produced by adopting the freeze drying method, but the freeze drying equipment has the limitations of high technical difficulty, high one-time investment and high operating cost, and the large-area popularization of the processing of the fruit and vegetable powder is severely restricted.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model discloses a multistage filtering system for producing fruit and vegetable dry powder, which adopts a method of squeezing and extruding fruit and vegetable juice in fruit and vegetable in a specific multistage filtering system to reduce the load of freeze-drying equipment, thereby reducing the cost of the fruit and vegetable dry powder; the utility model has high membrane filtration precision, removes macromolecular impurities causing fruit and vegetable juice precipitation by primary filtration and membrane filtration, can keep fruit and vegetable juice not to generate precipitation for a long time, and has high quality of produced fruit and vegetable juice products, thus not only being capable of producing fruit and vegetable dry powder, but also being capable of producing fresh fruit and vegetable juice drinks, improving the utilization rate of raw materials of fruit and vegetable, having low one-time investment of a production system, very low operating cost, being convenient for large-scale popularization and use in the industry, and the utility model has the CIP cleaning system, has membrane system cleaning maintenance and sterilization functions, completely meets the sanitary requirements of food processing, can produce fruit and vegetable juice concentrated solution by adopting a membrane concentration dehydration method for the fruit and vegetable juice after multi-stage filtration, and can also mix the dehydrated concentrated solution with dry residues after multi-stage filtration to produce the original juice dry powder, the application range of the fruit and vegetable juice after multistage filtration is wider.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a multi-stage filtration system for producing fruit and vegetable dry powder comprises a pretreatment system, a pretreatment system and an ultrafiltration system, wherein a first output end of the pretreatment system is communicated with a first input end of the pretreatment system through a pipeline, and a first output end of the pretreatment system is communicated with an input end of the ultrafiltration system through a pipeline;
the pre-filtering system comprises a first intermediate tank, a filtering device, a second intermediate tank, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a fifth pipeline, a first input end of the first intermediate tank is communicated with a first output end of the first pipeline, an output end of the first intermediate tank is communicated with an input end of the filtering device through the second pipeline, a first output end of the filtering device is communicated with a first input end of the second intermediate tank, a second input end of the second intermediate tank is communicated with an output end of the fourth pipeline, an output end of the second intermediate tank is communicated with an input end of the fifth pipeline, and an input end of the fourth pipeline is communicated with a second output end of the first pipeline.
As a further description of the above technical solution:
the filtering device comprises a sixth pipeline, the input end of the sixth pipeline is communicated with the second output end of the filtering device, and the sixth pipeline is used for discharging the fine pectin and pulp intercepted by the filtering device.
As a further description of the above technical solution:
the pretreatment system comprises a juice extractor, a crusher, a seventh pipeline, an eighth pipeline and a ninth pipeline, wherein a first output end of the juice extractor is communicated with a second input end of the first intermediate tank through the seventh pipeline, the seventh pipeline is used for conveying juice in the juice extractor to the first intermediate tank, a second output end of the juice extractor is communicated with an input end of the crusher through the eighth pipeline, and an output end of the crusher is communicated with an input end of the ninth pipeline.
As a further description of the above technical solution:
the pretreatment system further comprises a tenth pipeline, wherein the output end of the ninth pipeline is communicated with the first input end of the tenth pipeline, and the output end of the sixth pipeline is communicated with the second input end of the tenth pipeline.
As a further description of the above technical solution:
the ultrafiltration system comprises ultrafiltration equipment and an eleventh pipeline, wherein the input end of the ultrafiltration equipment is communicated with the output end of the second intermediate tank through the fifth pipeline, the first output end of the ultrafiltration equipment is communicated with the first input end of the first intermediate tank through the first pipeline, the second output end of the ultrafiltration equipment is communicated with the input end of the eleventh pipeline, and the eleventh pipeline is used for discharging clear liquid in the ultrafiltration equipment.
As a further description of the above technical solution:
the filter device is a cloth bag filter device or a plate frame filter device, the membrane used by the ultrafiltration system is a membrane made of organic materials or inorganic materials, the structure of the filter membrane is one of a roll type, a disc type, a plate type, a hollow fiber and a tubular membrane filter device, and the molecular weight cut-off of the filter membrane is 1 KD-500 KD.
As a further description of the above technical solution:
the second pipeline comprises a first liquid pump which is arranged in a passage of the second pipeline and is used for pumping the juice in the first intermediate tank into the ultrafiltration device.
As a further description of the above technical solution:
the first conduit includes a first valve disposed in a passageway of the first conduit.
As a further description of the above technical solution:
the fourth conduit includes a second valve disposed in a passageway of the fourth conduit, the second valve not obstructing the flow of the dense slurry in the first conduit.
As a further description of the above technical solution:
the fifth pipeline comprises a second liquid pump, the second liquid pump is arranged in a passage of the fifth pipeline, and the second liquid pump is used for pumping the juice in the second intermediate tank into the ultrafiltration device.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model discloses a squeeze the method of extruding the fruit vegetables juice among the fruit vegetables, reduce freeze-drying equipment's load to reduce the cost of fruit vegetables dry powder.
2. The utility model discloses used membrane filtration precision is high, through prefilter and adopt membrane filtration to get rid of the macromolecule impurity that arouses fruit vegetables juice to precipitate, can keep fruit vegetables juice not to produce for a long time and deposit, and the fruit vegetables juice product quality of production is high.
3. The utility model discloses can enough produce the fruit vegetables dry powder, can produce fresh fruit vegetables juice drink again, improve the utilization ratio of fruit vegetables raw and other materials, the disposable input of production system is low, and the working costs is very cheap, uses widely on a large scale in the trade of being convenient for.
4. The utility model discloses from taking CIP cleaning system, have membrane system concurrently and wash the maintenance and the function of disinfecting, satisfy the sanitary requirement of food processing completely.
5. This use is novel can adopt the method of membrane concentration dehydration to produce fruit and vegetable juice concentrate with the fruit and vegetable juice after multistage filtration, can also produce the fruit and vegetable juice dry powder of original juice original flavor with the dry residue mixture after this kind of concentrated dehydration liquid and multistage filtration together, makes the fruit and vegetable juice application range after how much filtration wider.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic flow diagram of a multi-stage filtration system for producing dry fruit and vegetable powders;
1-pretreatment system, 2-prefiltration system, 3-ultrafiltration system, 11-juice extractor, 12-crusher, 21-first intermediate tank, 22-second intermediate tank and 31-ultrafiltration equipment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment is a process of a multistage filtration system for producing fruit and vegetable dry powder, as shown in fig. 1, comprising a pretreatment system 1, a pretreatment system 2, and an ultrafiltration system 3, wherein a first output end of the pretreatment system 1 is communicated with a first input end of the pretreatment system 2 through a pipeline, a first output end of the pretreatment system 2 is communicated with an input end of the ultrafiltration system 3 through a pipeline, the pretreatment system 2 comprises a first intermediate tank 21, a filtration device, a second intermediate tank 22, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, and a fifth pipeline, a first input end of the first intermediate tank 21 is communicated with a first output end of the first pipeline, an output end of the first intermediate tank 21 is communicated with an input end of the filtration device through the second pipeline, a first output end of the filtration device is communicated with a first input end of the second intermediate tank 22 through the third pipeline, the second input end of the second intermediate tank 22 is communicated with the output end of the fourth pipeline, the output end of the second intermediate tank 22 is communicated with the input end of the fifth pipeline, the input end of the fourth pipeline is communicated with the second output end of the first pipeline, the filtering device comprises a sixth pipeline, the input end of the sixth pipeline is communicated with the second output end of the filtering device, the sixth pipeline is used for discharging the fine pectin and pulp intercepted by the filtering device, the pretreatment system 1 comprises a juice extractor 11, a crusher 12, a seventh pipeline, an eighth pipeline and a ninth pipeline, the first output end of the juice extractor 11 is communicated with the second input end of the first intermediate tank 21 through the seventh pipeline, the seventh pipeline is used for conveying the juice in the juice extractor 11 to the first intermediate tank 21, the second output end of the juice extractor 11 is communicated with the input end of the crusher 12 through the eighth pipeline, the output end of the crusher 12 is communicated with the input end of the ninth pipeline, the ultrafiltration system 3 comprises an ultrafiltration device 31 and an eleventh pipeline, the input end of the ultrafiltration device 31 is communicated with the output end of the second intermediate tank 22 through the fifth pipeline, the first output end of the ultrafiltration device 31 is communicated with the first input end of the first intermediate tank 21 through the first pipeline, the second output end of the ultrafiltration device 31 is communicated with the input end of the eleventh pipeline, the eleventh pipeline is used for discharging clear liquid in the ultrafiltration device 31, the second pipeline comprises a first liquid pump, the first liquid pump is arranged in a passage of the second pipeline, the first liquid pump is used for pumping juice in the first intermediate tank 21 into the ultrafiltration device 31, the first pipeline comprises a first valve, and the first valve is arranged in a passage of the first pipeline, the fourth pipe comprises a second valve which is arranged in the passage of the fourth pipe and which does not obstruct the flow of thick stock in the first pipe, and the fifth pipe comprises a second liquid pump which is arranged in the passage of the fifth pipe and which is used for pumping the juice in the second intermediate tank 22 into the ultrafiltration device 31;
preferably, the pretreatment system 1 further comprises a tenth pipeline, an output end of the ninth pipeline is communicated with a first input end of the tenth pipeline, an output end of the sixth pipeline is communicated with a second input end of the tenth pipeline, and the filter device is a cloth bag filter device or a plate and frame filter device or other filter devices for removing solid impurities and fine solid suspended matters in the feed liquid; the ultrafiltration system 3 is one of an inorganic membrane filtration device, an organic membrane filtration device, a spiral membrane filtration device, a disc membrane filtration device, a plate membrane filtration device, a hollow fiber membrane filtration device and a tubular membrane filtration device, and the molecular weight cut-off of the ultrafiltration system is within one or an interval range of 1 KD-500 KD;
in order to solve the problem of production of fruit and vegetable powder, generally, fruit and vegetable raw materials are dried and dehydrated and then further crushed. The drying method of the fruits and vegetables mainly comprises hot air drying and vacuum freeze drying, and the latter method greatly preserves the nutrient content, color and flavor of the fruits and vegetables due to the drying in the freezing and vacuum states, so that the high-grade fruit and vegetable powder on the market is produced by adopting the freeze drying method, but the freeze drying equipment has the limitations of large technical difficulty, high one-time investment and high operating cost, and the problem of large-area popularization of the fruit and vegetable powder processing is seriously restricted;
the structure of the present invention is further explained below in conjunction with the use process:
the implementation process of the pretreatment system 1 is as follows: the method is characterized in that the cleaned fresh fruits and vegetables are squeezed out of most of the fruit and vegetable juice through the juicer 11, the squeezed fruit and vegetable juice naturally flows into the first intermediate tank 21 through a liquid level difference to be temporarily stored, and dry residues of the fresh fruits and vegetables after being squeezed out of the fruit and vegetable juice through the juicer 11 are blocky, poor in liquidity and inconvenient to mix in a subsequent process, and the freeze-drying effect is reduced, so that the dry residues need to be pulped through the crusher 12, and are convenient to mix with materials in the subsequent process.
The implementation process of the pre-filtering system 2 is as follows: the fruit and vegetable juice in the first intermediate tank 21 is conveyed into a cloth bag or a plate frame by a conveying pump for filtration, the liquid part in the fruit and vegetable juice enters a second intermediate tank 22 for temporary storage through the cloth bag or filter cloth when the conveying pump reaches a certain pressure, and fine pulp, pectin and solid suspended matters are intercepted by the cloth bag or filter cloth and are periodically discharged out of the system to be uniformly mixed with solids discharged from other processes and then conveyed into a freeze-drying process.
It should be noted that, the above slurry of the crusher 12 and the filter residue filtered by the plate frame are mixed uniformly, and then the resultant vegetable dry powder is freeze-dried in a freeze-drying process.
The ultrafiltration system 3 is implemented by the following steps: the fruit and vegetable juice which is pre-filtered in the second intermediate tank 22 enters an ultrafiltration membrane filtering unit under the conveying of an ultrafiltration circulating pump, and the fruit and vegetable juice is filtered in the ultrafiltration membrane filtering unit: forming and cleaning a part of the fruit and vegetable juice through the membrane and feeding the part of the fruit and vegetable juice into a third intermediate tank; the other part of the fruit and vegetable juice contains fine pectin, pulp, macromolecular protein, tanning and other impurities, which are intercepted to form concentrated solution, the concentrated solution returns to the second intermediate tank 22 and enters the ultrafiltration system 3 for circular filtration, and therefore the part of the liquid is also called as circulating liquid. When the circulating liquid is subjected to circulating filtration, the second valve (circulating liquid valve) is opened, the first valve (thick pulp valve) is closed, and when the fruit and vegetable juice reaches a certain concentration through circulating filtration in the ultrafiltration system 3, the first valve (thick pulp valve) is opened, and the second valve (circulating liquid valve) is closed. Returning the ultrafiltered thick slurry to the first intermediate tank 21, then sending the slurry to the cloth bag or plate frame ultrafiltering equipment 31 again by the delivery pump, intercepting fine pectin and pulp in the thick slurry by utilizing the bridging action of the filter cake of the cloth bag or plate frame filtering medium, and sending the clear liquid to the second intermediate tank 22 again for ultrafiltering and circulating filtration.
The ultrafiltered clear liquid of the fruit and vegetable juice does not generate aggregative precipitation even under the electrostatic action in the illumination or transportation process for a long time due to the removal of macromolecular protein, plant colloid and tanning. Therefore, the beverage can be prepared into high-quality beverage after blending. Or concentrating and dehydrating to obtain concentrated solution, mixing with the slurry of the crusher 12 or the filter residue of the plate frame of the cloth bag, and freeze drying to obtain the original fruit and vegetable dry powder.
It should be noted that the main function of the ultrafiltration system 3 is to intercept fine pectin, pulp and macromolecular protein in the pre-filtered clear liquid, and to tan and other impurities, so as to solve the problem that plant colloid and macromolecular impurities precipitate in fresh fruits and vegetables due to illumination or electric charge, which affects the quality of fruit and vegetable juice drinks.
According to the utility model, a large amount of fruit and vegetable juice of fresh fruits and vegetables is squeezed and separated, so that the freeze-drying load of the fruits and vegetables is reduced, and the cost for producing the fruit and vegetable dry powder is reduced; meanwhile, fresh fruit and vegetable juice can be subjected to multistage filtration, and a fruit and vegetable juice health drink is produced by a certain blending process, wherein the multistage filtration system comprises a pretreatment system 1, a prefiltration system 2 and an ultrafiltration system 3 which are sequentially connected, and after fresh fruits and vegetables (which need to be peeled if necessary) are squeezed by a juicer 11, the fruit and vegetable juice and residues are separated and enter an intermediate tank of the prefiltration system 2; the sediment structure board that juice extractor 11 came out is real, be unfavorable for freeze-drying, need send freeze-drying process production fruit vegetables dry powder after breaker 12 is broken, fresh fruit vegetables juice contains a lot of micromolecule nutrient substances and tiny pulp in the prefiltration intermediate tank, thick liquid that returns with ultrafiltration apparatus 31 is together, filter back through sack or sheet frame and hold back most solid pulp and tiny suspended solid and form the filter residue, the filter residue gets into freeze-drying process with the material that the process came out before and after together, clear solution after sack or sheet frame filtration then gets into ultrafiltration system 3, the sediment that the sack or sheet frame filtered out gets into freeze-drying process production fruit vegetables dry powder together with the dry sediment after the process juice was squeezed to the preceding process.
It should be noted that a CIP cleaning system is further provided in the ultrafiltration apparatus 31;
in conclusion, in a specific multistage filtration system, the method of squeezing and extruding fruit and vegetable juice in fruit and vegetable is adopted, so that the load of freeze-drying equipment is reduced, and the cost of fruit and vegetable dry powder is reduced; the utility model has high membrane filtration precision, removes macromolecular impurities causing fruit and vegetable juice precipitation by primary filtration and membrane filtration, can keep fruit and vegetable juice not to generate precipitation for a long time, and has high quality of produced fruit and vegetable juice products, thus not only being capable of producing fruit and vegetable dry powder, but also being capable of producing fresh fruit and vegetable juice drinks, improving the utilization rate of raw materials of fruit and vegetable, having low one-time investment of a production system, very low operating cost, being convenient for large-scale popularization and use in the industry, and the utility model has the CIP cleaning system, has membrane system cleaning maintenance and sterilization functions, completely meets the sanitary requirements of food processing, can produce fruit and vegetable juice concentrated solution by adopting a membrane concentration dehydration method for the fruit and vegetable juice after multi-stage filtration, and can also mix the dehydrated concentrated solution with dry residues after multi-stage filtration to produce the original juice dry powder, the application range of the fruit and vegetable juice after multistage filtration is wider.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. A multistage filtration system for producing fruit vegetables dry powder which characterized in that: the device comprises a pretreatment system, a pretreatment system and an ultrafiltration system, wherein a first output end of the pretreatment system is communicated with a first input end of the pretreatment system through a pipeline, and a first output end of the pretreatment system is communicated with an input end of the ultrafiltration system through a pipeline;
the pre-filtering system comprises a first intermediate tank, a filtering device, a second intermediate tank, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline and a fifth pipeline, a first input end of the first intermediate tank is communicated with a first output end of the first pipeline, an output end of the first intermediate tank is communicated with an input end of the filtering device through the second pipeline, a first output end of the filtering device is communicated with a first input end of the second intermediate tank, a second input end of the second intermediate tank is communicated with an output end of the fourth pipeline, an output end of the second intermediate tank is communicated with an input end of the fifth pipeline, and an input end of the fourth pipeline is communicated with a second output end of the first pipeline.
2. The multi-stage filtration system for producing fruit and vegetable dry powder of claim 1, wherein: the filtering device comprises a sixth pipeline, the input end of the sixth pipeline is communicated with the second output end of the filtering device, and the sixth pipeline is used for discharging the fine pectin and pulp intercepted by the filtering device.
3. The multi-stage filtration system for producing fruit and vegetable dry powder of claim 2, wherein: the pretreatment system comprises a juice extractor, a crusher, a seventh pipeline, an eighth pipeline and a ninth pipeline, wherein a first output end of the juice extractor is communicated with a second input end of the first intermediate tank through the seventh pipeline, the seventh pipeline is used for conveying juice in the juice extractor to the first intermediate tank, a second output end of the juice extractor is communicated with an input end of the crusher through the eighth pipeline, and an output end of the crusher is communicated with an input end of the ninth pipeline;
the pretreatment system further comprises a tenth pipeline, wherein the output end of the ninth pipeline is communicated with the first input end of the tenth pipeline, and the output end of the sixth pipeline is communicated with the second input end of the tenth pipeline.
4. The multi-stage filtration system for producing fruit and vegetable dry powder of claim 1, wherein: the ultrafiltration system comprises ultrafiltration equipment and an eleventh pipeline, wherein the input end of the ultrafiltration equipment is communicated with the output end of the second intermediate tank through the fifth pipeline, the first output end of the ultrafiltration equipment is communicated with the first input end of the first intermediate tank through the first pipeline, the second output end of the ultrafiltration equipment is communicated with the input end of the eleventh pipeline, and the eleventh pipeline is used for discharging clear liquid in the ultrafiltration equipment.
5. The multi-stage filtration system for producing fruit and vegetable dry powder of claim 1, wherein: the filter device is a cloth bag filter device or a plate frame filter device, the membrane used by the ultrafiltration system is a membrane made of organic materials or inorganic materials, the structure of the filter membrane is one of a roll type, a disc type, a plate type, a hollow fiber and a tubular membrane filter device, and the molecular weight cut-off of the filter membrane is 1 KD-500 KD.
6. The multi-stage filtration system for producing fruit and vegetable dry powder of claim 1, wherein: the second pipeline comprises a first liquid pump which is arranged in a passage of the second pipeline and is used for pumping the juice in the first intermediate tank into the ultrafiltration device.
7. The multi-stage filtration system for producing fruit and vegetable dry powder of claim 1, wherein: the first conduit includes a first valve disposed in a passageway of the first conduit.
8. The multi-stage filtration system for producing fruit and vegetable dry powder of claim 7, wherein: the fourth conduit includes a second valve disposed in a passageway of the fourth conduit, the second valve not obstructing the flow of the dense slurry in the first conduit.
9. The multi-stage filtration system for producing fruit and vegetable dry powder of claim 4, wherein: the fifth pipeline comprises a second liquid pump, the second liquid pump is arranged in a passage of the fifth pipeline, and the second liquid pump is used for pumping the juice in the second intermediate tank into the ultrafiltration device.
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| CN115399422A (en) * | 2022-08-24 | 2022-11-29 | 杭州科膜水处理工程有限公司 | Rosa roxburghii powder preparation process and equipment |
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| CN115399422A (en) * | 2022-08-24 | 2022-11-29 | 杭州科膜水处理工程有限公司 | Rosa roxburghii powder preparation process and equipment |
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