CN104886253A - Dynamic acid adjusting device and dynamic acid adjusting method for adding acid into tank - Google Patents
Dynamic acid adjusting device and dynamic acid adjusting method for adding acid into tank Download PDFInfo
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Abstract
The invention provides a dynamic acid adjusting device and a dynamic acid adjusting method for adding an acid into a tank. The dynamic acid adjusting device comprises a material dissolving tank, an acid dissolving tank, a semi-finished product tank and a discharging pump, and the material dissolving tank is connected with the semi-finished product tank through a pipeline; the acid dissolving tank is connected with the semi-finished product tank through a pipeline, one end of the pipeline extends into the semi-finished product tank, and the opening of the one end of the pipeline is adopted as an acid adding point; the bottom of the semi-finished product tank is provided with a discharging opening, and the discharging opening is connected with the top of the semi-finished product tank through a pipeline to form a recyclable system; and the discharging pump is arranged on a connecting pipeline between he discharging opening at the bottom of the semi-finished product tank and the top of the semi-finished product tank. The invention also provides the dynamic acid adjusting method for adding an acid into a tank through the dynamic acid adjusting device. The dynamic acid adjusting method has the advantages of simple principle, use convenience, reduction of the production cost, simplification of the production process, and increase of the working efficiency.
Description
Technical field
The present invention relates to the dynamic acid-adjusting method of acid adding in a kind of dynamic acid adjustment device and tank, belong to dairy product processing field.
Background technology
Acidic milk drink can be divided into Yogurt Drink and the large class of acid adjustment type acidic milk drink two by its processing technology.Yogurt Drink is with breast or dairy products for raw material, after adding lactobacillus-fermented, more a kind of Yogurt Drink being aided with sucrose, fruit juice, stabilizing agent etc. and making.Acid adjustment type acidic milk drink refers to without lactobacillus-fermented, with citric acid or fruit juice, the pH of cow's milk is adjusted to sour point (pH=4.6) a kind of acid adjustment type acidic milk drinks made below such as caseic.Use the difference of raw material milk can be divided into breast and reconstituted milk two kinds of production and processing technologies by producing acidic milk drink.No matter produce acidic milk drink with breast or reconstituted milk for raw material milk, be fermented type or allotment type, and its main component is all breast or dairy products, according to national standard, in its composition protein content necessary >=1.0%.Especially, when the protein beverage exchanging this auxotype of acid type milk beverage carries out acid adjustment, the feed liquid after acid adjustment usually can not keep uniform stable state, easy layering and precipitation.How solving the stability of protein in beverage is numerous food product worker and manufacturer's problem demanding prompt solution.
The quality of acid adjustment type acidic milk drink quality, outside the Pass having with the quality and formula of used raw material, is also decided by used technology and production equipment and condition.Mainly containing two kinds of acid-adjusting methods at present, is spray acid-adjusting method and online acid-adjusting method respectively.
Spray acid-adjusting method can cause treating acid adjustment feed liquid local overacidification and cause that acid nonfast material is degraded under peracid condition, sex change.
Chinese patent application (application number 200810115633.1) discloses a kind of method of online acid adjustment, it to treat that acid adjustment feed liquid and acid solution pass through Venturi tube simultaneously, use a kind of acid-adjusting method of on-line mixing acid adding, this acid-adjusting method equipment used as shown in Figure 1, this equipment comprises material tank 1, blending tank 2, changes sour tank 3, semi-finished product tank 4, Venturi tube 5, discharging pump 7, and its annexation as shown in Figure 1.Acid adjustment feed liquid and the good mixed effect of acid solution is treated preferably although utilize the method to obtain, but in process of production, online acid adjustment to treat that acid adjustment feed liquid needs in blending tank temporary, which adds the acquisition cost of corresponding production equipment, and need the plant designing of greater room.To prepare the every tank semi-finished product of 60T, the acid adjustment technique of online acid-adjusting method needs the blending tank configuring 40T capacity as the temporary storage tank treating acid adjustment feed liquid, the domestic blending tank price of a 40T capacity is 300,000 yuan, and a production line of working continuously needs at least 2 blending tanks.
Therefore, developing a kind of new acid-adjusting method, solve the problem existing for current acid-adjusting method, is one of this area problem demanding prompt solution.
Summary of the invention
In order to solve the problem, the object of the present invention is to provide a kind of dynamically acid adjustment device, this dynamic acid adjustment device adopts the mode in the inside acid adding treating acid adjustment feed liquid, realizes dynamic acid adjustment, do not use blending tank and Venturi tube, efficient acid adjustment effect while effectively reducing costs, can be reached.
The present invention also aims to a kind of method that dynamic acid adjustment is provided, the method principle is simple, be easy to operation.
In order to achieve the above object, the present invention provide firstly a kind of dynamically acid adjustment device, and it comprises: material tank, change sour tank, semi-finished product tank and discharging pump, wherein,
Described material tank is communicated with by pipeline with described semi-finished product tank;
The sour tank of describedization is communicated with by pipeline with described semi-finished product tank, and the inside that one end of pipeline extends to described semi-finished product tank is point using its opening as acid adding;
Described semi-finished product pot bottom is provided with discharging opening, and discharging opening is connected with semi-finished product tank top the pipeline be communicated with, and forms system capable of circulation;
Described discharging pump is arranged on the connecting line between the discharging opening of described semi-finished product pot bottom and described semi-finished product tank top.
In dynamic acid adjustment device provided by the present invention, preferably, described acid adding point is in the bottom of described semi-finished product tank.
In dynamic acid adjustment device provided by the present invention, preferably, the vertical range of described acid adding point and described discharging opening is 0-1000mm; Be more preferably 10-20mm.
In dynamic acid adjustment device provided by the present invention, the sour tank of describedization is positioned at the centre of described material tank and described semi-finished product tank.
Present invention also offers utilize above-mentioned dynamic acid adjustment device tank in the dynamic acid-adjusting method of acid adding, it comprises the following steps:
Step one: add respectively in material tank and the sour tank of change and treat acid adjustment feed liquid and acid solution;
Step 2: will treat that acid adjustment feed liquid is incorporated in semi-finished product tank by connecting pipeline in material tank;
Step 3: open discharging pump, will treat that acid adjustment feed liquid is extracted out from discharging opening, and then return semi-finished product tank from the top of semi-finished product tank, form a circulation, make acid solution by acid adding point enter in semi-finished product tank with treat that acid adjustment feed liquid mixes, realize dynamic acid adjustment.
In above-mentioned dynamic acid-adjusting method, acid solution adds after start circulation until acid adjustment feed liquid.
According to specific embodiment of the invention scheme, preferably, the pH value treating acid adjustment feed liquid of extracting out after acid adding controls to be 4.2≤pH < 4.6.
According to specific embodiment of the invention scheme, preferably, the speeds control of acid adding is: extract out while 3 volumes treat acid adjustment feed liquid by discharging opening, added the acid solution of 1 volume by acid adding point.
To ensure to treat that the flow velocity of acid adjustment feed liquid is greater than the flow velocity of acid solution in concrete acid adjustment process, otherwise treat that protein component in acid adjustment feed liquid can the sex change because meeting acid, namely ensure that the pH value treating acid adjustment feed liquid of extracting out after acid adding is about 4.2 (as long as keep off 4.6,4.6 is caseic isoelectric point, reaches 4.6 and albuminous degeneration can occur).
Because acid adding point is arranged near the discharging opening of semi-finished product pot bottom, when can turbulization phenomenon when acid adjustment feed liquid is drawn out of, the fluid force that turbulent phenomenon produces acts on the acid solution flowed out from acid adding point, acid solution can be scattered in rapidly, evenly, fully to be treated in acid adjustment feed liquid, mix by again getting back in semi-finished product tank after system capable of circulation, thus realize dynamic acid adjustment.
Acid adjustment device provided by the present invention and acid-adjusting method are the dynamic acid adjustment apparatus and method of acid adding in a kind of tank, have following Advantageous Effects:
1, adopt acid adjustment device of the present invention and acid-adjusting method to carry out acid adjustment can ensure that acid solution is scattered in rapidly, equably and treat in acid adjustment feed liquid, thus reach acidizing effect slowly, acid solution is slowly sprayed in acid to be added feed liquid, Rapid Circulation is carried out to feed liquid simultaneously and to cause to avoid local overacidification that acid nonfast material is degraded under peracid condition, sex change.
Production cost required when 2, adopting acid-adjusting method of the present invention to carry out acid adjustment drops into and significantly reduces, and does not need the production equipment that the prices such as configuration high-speed agitating device or temporary storage tank are higher.
Decrease the processing step that relevant feed liquid is kept at blending tank when 4, adopting acid-adjusting method of the present invention to carry out acid adjustment, improve corresponding operating efficiency.
Eliminate the configuration of blending tank when 5, adopting acid adjustment device of the present invention and acid-adjusting method to carry out acid adjustment, the space needed for factory building also reduces thereupon.
Accompanying drawing explanation
Fig. 1 is the device schematic diagram of existing online acid-adjusting method;
Fig. 2 is the device schematic diagram of the dynamic acid adjustment of embodiment 1.
Main Reference symbol description:
1 material tank 2 blending tank 3 changes sour tank 4 semi-finished product tank 5 Venturi tube 6 acid adding point 7 discharging pump 8 discharging opening
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and beneficial effect, existing following detailed description is carried out to technical scheme of the present invention, but can not be interpreted as to of the present invention can the restriction of practical range.
Embodiment 1
Present embodiments provide a kind of dynamically acid adjustment device, as shown in Figure 2, this device comprises its structure: material tank 1, change sour tank 3, semi-finished product tank 4 and discharging pump 7, and wherein, material tank 1 is communicated with by pipeline with semi-finished product tank 4; Change sour tank 3 to be communicated with by pipeline with semi-finished product tank 4, one end of pipeline extends to the inside of described semi-finished product tank 4, and using its opening as acid adding point 6; Acid adding point 6 is in the bottom of semi-finished product tank 4; Change the centre that sour tank 3 is positioned at material tank 1 and semi-finished product tank 4, be provided with discharging opening 8 bottom semi-finished product tank 4, discharging opening 8 is connected with semi-finished product tank 4 top the pipeline be communicated with, and forms system capable of circulation; Discharging pump 7 is arranged on the connecting line between discharging opening 8 bottom semi-finished product tank 4 and semi-finished product tank 4 top.
Acid adding point 6 is 10-20mm with the vertical range of discharging opening 8.
Wherein, the volume of material tank 1 is 15m
3, the volume of changing sour tank 3 is 15m
3, semi-finished product tank 4 volume be 60m
3.
The dynamic acid-adjusting method of acid adding in the tank of above-mentioned dynamic acid adjustment device is utilized to comprise the following steps:
First, add respectively to material tank 1 and the sour tank 3 of change and treat acid adjustment feed liquid 46t and acid solution 14t, then, will treat in material tank 1 that acid adjustment feed liquid is incorporated in semi-finished product tank 4 by connecting pipeline, treating that acid adjustment feed liquid is divided joins in material tank 1 several times, is as the criterion with the volume being no more than material tank 1 at every turn;
Finally, open discharging pump 7, to treat that acid adjustment feed liquid is extracted out from discharging opening 8, treat that the pH value of acid adjustment feed liquid is about 4.2 after controlling acid adding, and then return semi-finished product tank 4 from the top of semi-finished product tank 4, form a circulation, make acid solution by acid adding point 6 enter in semi-finished product tank 4 with treat that acid adjustment feed liquid mixes, treat acid adjustment feed liquid and carry out dynamic acid adjustment, ensure the acid solution controlling to add 1 volume while extraction 3 volume treats acid adjustment feed liquid.
Embodiment 2
The present embodiment carries out contrast to the acidic milk drink that the acidic milk drink utilizing the dynamic acid-adjusting method of embodiment 1 to produce and online acid-adjusting method are produced and investigates.Wherein, the composition of raw materials of acidic milk drink that prepared by two kinds of acid-adjusting methods is: every 100 grams of product meters, 35 grams, milk, white granulated sugar 5 grams, stabilizing agent 2 grams, citric acid 0.20 gram, lactic acid 0.20 gram, 0.05 gram, essence, adds water to 100 grams.
Adopt online acid-adjusting method to prepare acidic milk drink specifically to comprise the following steps:
1, milk making: pump in blending tank 2 after milk being cooled to 4 DEG C;
2, steady dissolution agent: add the batching water that appropriate temperature is 30-60 DEG C in material tank 1, open while stirring and add stabilizing agent and white granulated sugar, Keep agitation also checks material effect, makes solution disperse, in without after the even feed liquid of macroscopic particle, to be cooled to 10 DEG C completely;
3, premixed: the stabilizing agent feed liquid of dissolving is pumped in blending tank 2, the stirring of simultaneously opening blending tank 2 makes feed liquid in tank fully mix with milk, thus obtains treating acid adjustment feed liquid;
4, acid solution preparation: changing the batching water that the temperature adding acid (lactic acid and citric acid) and acid quality 50 times in sour tank 3 is 10 DEG C, opening in tank and stirring, fully dissolving lactic acid, citric acid, obtain acid solution;
5, acid adjustment: pump in semi-finished product tank 4 by Venturi tube 5 by the feed liquid mixed in blending tank 2, when when acid adjustment feed liquid is by Venturi tube 5, also pumps in Venturi tube 5 by changing the acid solution changed in sour tank 3; Adjust the flow of acid solution, after the acid adding making outflow Venturi tube 5 namely enter in semi-finished product tank 4, the pH value of feed liquid is about 4.3 simultaneously;
6, constant volume: supply residue batching water in semi-finished product tank 4, after completing constant volume, feed liquid is mixed, add essence and obtain semi-finished product;
7, homogeneous: semi-finished product are heated to 60-70 DEG C and carry out homogeneous, homogenization pressure is 250bar;
8, sterilization: sterilization 4 seconds at 121 DEG C;
9, be cooled to 25 DEG C filling after, namely obtain acidic milk drink prepared by online acid-adjusting method.
Adopt the dynamic acid-adjusting method of acid adding in tank to prepare acidic milk drink specifically to comprise the following steps:
1, milk making: pump in semi-finished product tank 4 after milk being cooled to 4 DEG C;
2, steady dissolution agent: add the batching water that appropriate temperature is 30-60 DEG C in material tank 1, stabilizing agent and white granulated sugar is added while opening stirring, Keep agitation also checks material effect, makes solution disperse, in without after the even feed liquid of macroscopic particle, to be cooled to 10 DEG C completely;
3, mix: the stabilizing agent feed liquid of dissolving is pumped in semi-finished product tank 4, open discharging pump 7 simultaneously and feed liquid in tank is fully mixed with the form of self-loopa with milk, thus obtain treating acid adjustment feed liquid;
4, acid solution preparation: changing the batching water that the temperature adding acid (lactic acid and citric acid) and acid quality 50 times in sour tank 3 is 10 DEG C, opening in tank and stirring, fully dissolving lactic acid, citric acid, obtain acid solution;
5, acid adjustment: under the state that discharging pump 7 is opened, by acid solution from changing sour tank 3 by acid adding point 6, join in semi-finished product tank 4, adjust the flow of acid solution simultaneously, make the feed liquid of outflow discharging pump 7 namely come back to the pH value of feed liquid after acid adding in semi-finished product tank 4 about 4.3;
6, constant volume: supply residue batching water in semi-finished product tank 4, after completing constant volume, material is mixed, add essence and obtain semi-finished product;
7, homogeneous: semi-finished product are heated to 60-70 DEG C and carry out homogeneous, homogenization pressure is 250bar;
8, sterilization: sterilization 4 seconds at 121 DEG C;
9, be cooled to 25 DEG C filling after, namely obtain acidic milk drink prepared by dynamic acid-adjusting method.
Two increment product (acidic milk drink that above-mentioned two kinds of methods are obtained) are stored between thermostatic accelerated experiment and carry out contrast investigation detection.Storage temperature is 37 DEG C, and the contrast investigation time is 4 months (the normal temperature condition lower shelf-life of this series products is 6 months, the 8-12 month of storing under storage is equivalent to normal temperature condition for 4 months at 37 DEG C).
Testing result is investigated in sense organ contrast
Sense organ contrast is investigated, and mainly measure the fat floating of two increment product and protein precipitation, concrete outcome is in table 1.
Fat floating measures: get each 100g of two increment product, aseptically moves into airtight in colorimetric cylinder, standing, regularly investigates, accurately measure the height of fat floating in colorimetric cylinder with rule under 37 DEG C of constant temperatures.
Albumen precipitation measures: get 250mL sample, slowly topple over supernatant liquid, take bottom precipitation material amount, calculates the percentage composition that sediment accounts for gross sample amount.
Testing result is investigated in the sense organ contrast of table 1 liang increment product
As can be seen from the testing result of table 1, for the acidic milk drink product utilizing the dynamic acid-adjusting method of online acid-adjusting method and embodiment 1 to produce to obtain within 37 DEG C of storage at a constant temperature observation period of 120 days, there is not significant difference in sample fat floating amount and albumen precipitation amount.
Testing result is investigated in physical and chemical index contrast
Physical and chemical index measures, and with every increment product for 250mL aseptic packaging acidic milk drink is for measuring samples, under 37 DEG C of constant temperatures, leaves standstill storage (period of storage is as shown in the detection frequency in table 2).Fat floating and albumen precipitation phenomenon can be there is because of passage of time owing to packing interior sample, therefore only need regularly extract test sample and detect, the change of aseptic packaging acidic milk drink sample physical and chemical index attenuation trend can be found, specifically in table 2.
Testing result is investigated in the physical and chemical index contrast of table 2 liang increment product
As can be seen from the testing result of table 2, the dynamic acid-adjusting method of online acid-adding method and embodiment 1 produces the acidic milk drink product obtained, and within 37 DEG C of storage at a constant temperature observation period of 120 days, the attenuation trend of two groups of sample physical and chemical indexs does not exist significant difference.
These results suggest that dynamic acid adjustment device provided by the present invention and dynamic acid-adjusting method can realize exchanging the acid adjustment of acid type acidic milk drink well.
Claims (6)
1. a dynamic acid adjustment device, it comprises: material tank, change sour tank, semi-finished product tank and discharging pump, wherein:
Described material tank is communicated with by pipeline with described semi-finished product tank;
The sour tank of describedization is communicated with by pipeline with described semi-finished product tank, and the inside that one end of pipeline extends to described semi-finished product tank is point using its opening as acid adding;
Described semi-finished product pot bottom is provided with discharging opening, and this discharging opening is connected with semi-finished product tank top the pipeline be communicated with, and forms system capable of circulation;
Described discharging pump is arranged on the connecting line between the discharging opening of described semi-finished product pot bottom and described semi-finished product tank top.
2. dynamic acid adjustment device according to claim 1, wherein, described acid adding point is in the bottom of described semi-finished product tank.
3. dynamic acid adjustment device according to claim 1, wherein, the vertical range of described acid adding point and described discharging opening is 0-1000mm.
4., by a dynamic acid-adjusting method for acid adding in the tank of the dynamic acid adjustment device enforcement described in any one of claim 1-3, it comprises the following steps:
Step one: add respectively in material tank and the sour tank of change and treat acid adjustment feed liquid and acid solution;
Step 2: will treat that acid adjustment feed liquid is incorporated in semi-finished product tank by connecting pipeline in material tank;
Step 3: open discharging pump, will treat that acid adjustment feed liquid is extracted out from discharging opening, and then return semi-finished product tank from the top of semi-finished product tank, form a circulation, make acid solution by acid adding point enter in semi-finished product tank with treat that acid adjustment feed liquid mixes, realize dynamic acid adjustment.
5. method according to claim 4, wherein, the pH value treating acid adjustment feed liquid of extracting out after acid adding controls to be 4.2≤pH < 4.6.
6. the method according to claim 4 or 5, wherein, is extracted out while 3 volumes treat acid adjustment feed liquid by discharging opening, is added the acid solution of 1 volume by acid adding point.
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| CN114246212A (en) * | 2021-12-06 | 2022-03-29 | 叶康 | Dairy product beverage production line |
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