CN117643828A - Method for adding continuous multicomponent materials - Google Patents
Method for adding continuous multicomponent materials Download PDFInfo
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- CN117643828A CN117643828A CN202311602359.1A CN202311602359A CN117643828A CN 117643828 A CN117643828 A CN 117643828A CN 202311602359 A CN202311602359 A CN 202311602359A CN 117643828 A CN117643828 A CN 117643828A
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- 239000000463 material Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 239000007787 solid Substances 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000843 powder Substances 0.000 description 21
- 102000004169 proteins and genes Human genes 0.000 description 20
- 108090000623 proteins and genes Proteins 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 9
- 230000004580 weight loss Effects 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Abstract
The invention provides a method for adding continuous multicomponent materials, which comprises the following steps: s1, determining a material which is premixed firstly according to the characteristics of the continuously added material; s2, calculating a mixing ratio of the premixed materials according to the addition amount in each unit time; s3, premixing the premixed materials, wherein the amount of premixing is the amount required by the weightless scale for feeding each time; s4, discharging the premixed materials into a weightless scale, and accurately feeding and adding the premixed materials by the weightless scale according to the total amount of continuous adding requirements. According to the invention, various materials are premixed in advance, and then the premix is added by the weightless scale, so that the materials with smaller original addition amount can be added in a carrier mixing manner, the addition amount of the materials in unit time of the weightless scale is increased, the addition amount accuracy of the weightless scale is improved, the use amount of the weightless scale is reduced, and the production investment cost is reduced.
Description
Technical Field
The invention relates to the technical field of solid powder mixing, in particular to a method for adding continuous multicomponent materials.
Background
When the multi-component materials are added, in order to ensure the continuous adding accuracy of each material, an independent continuous adding weightless scale is used when each material is added, and the continuous adding accuracy of the materials is ensured through the weightless scale; however, when the continuous adding amount of the materials is smaller, the adding precision of the continuous adding weightless scale is low.
Disclosure of Invention
The invention aims to overcome and supplement the defects existing in the prior art and provide a continuous multi-component material adding method. Through the premixing process, the material adding amount is increased, and the adding amount accuracy of the continuous adding weightless scale is improved.
The technical scheme adopted by the invention is as follows:
a method of continuous multicomponent feed addition, wherein: the method comprises the following steps:
s1, determining materials which are premixed first according to continuously added material characteristics, wherein the material characteristics comprise material density and the addition amount of the materials in unit time, and the material characteristics are required to meet the following conditions: the density difference of the premixed materials is less than or equal to 5 times, and the addition amount difference of the premixed materials in unit time is less than or equal to 10 times;
s2, calculating a mixing ratio of the premixed materials determined in the step S1 according to the addition amount in each unit time, wherein the mixed ratio is calculated by using materials 1, 2, 4, 5, … =A, B, C, D and E …;
s3, adding the premixed materials obtained in the step S2 into a mixer for premixing, wherein the amount of each premixing is the amount of each material supplementing requirement of the weightless scale;
s4, discharging the premixed materials into a weightless scale according to the feeding time of the weightless scale, and continuously and accurately adding the premixed materials by the weightless scale according to the total amount of the continuous adding requirements.
Preferably, the continuous multicomponent feed addition method, wherein: the premixed material comprises at least two.
Preferably, the continuous multicomponent feed addition method, wherein: the premixed materials in the step S1 are solid powdery materials and solid granular materials.
Preferably, the continuous multicomponent feed addition method, wherein: in the step S3, the rotating speed of the mixer is 40-50 rpm, and the premixing time is 5-10 minutes.
The invention has the advantages that:
according to the continuous multi-component material adding method, the materials with smaller original adding amount can be added in a carrier mixing mode through a premixing process, so that the material adding amount in unit time of the weightless scale is increased, and the adding amount accuracy of the continuously added weightless scale is improved; through the premixing process, the use quantity of the continuously added weightless scales is reduced, and the production investment cost is reduced.
Drawings
FIG. 1 is a process flow diagram of the continuous multicomponent feed addition of the present invention.
Fig. 2 is a process flow chart of example 1 of the present invention.
Detailed Description
The invention will be further illustrated with reference to specific examples.
Example 1
As in fig. 2, the method of continuous multicomponent feed addition of the present example, wherein: the method comprises the following steps:
s1, determining materials which are premixed first according to continuously added material characteristics, wherein the material characteristics comprise material density and the addition amount of the materials in unit time, and the material characteristics are required to meet the following conditions: the density difference of the premixed materials is less than or equal to 5 times, and the addition amount difference of the premixed materials in unit time is less than or equal to 10 times; material 1: bran (density: 200g/L, continuous addition per 20 minutes, 10 kg), feed 2: protein powder (density: 500g/L, 1kg continuously added every 20 minutes); a weight loss balance is continuously added, wherein the adding amount of the weight loss balance is 11kg plus or minus 25g (the adding precision is 0.227%) continuously every 20 minutes, the feeding speed of the bran (10 kg) and the protein powder (1 kg) is 0.55kg/min, and the feeding is 11kg every 20 minutes;
s2, determining the step S1 as a material capable of being premixed, and calculating a mixing ratio according to the addition amount in each unit time; every 20 minutes, the adding amount of bran (10 kg), the adding amount of protein powder (1 kg), the adding amount difference in unit time (10/1=10 times) and the density difference of two materials (500/200=2.5 times); the addition amount difference and the density difference of the materials in unit time meet the characteristic requirements of the materials. Mixing ratio = 20 minutes bran addition amount: 20 minutes protein powder addition amount = 10kg:1kg = 10:1,;
and S3, adding the premixed materials obtained in the step S2 into a mixer for premixing, wherein the amount of each premixing is the amount of each material supplementing requirement of the weightless scale. Through the metering tank, bran (10 kg) and protein powder (1 kg) were put into a mixer to complete premixing of the materials, 11kg of the premix was obtained, the rotational speed of the mixer was 50rpm, and the premixing time was 5 minutes. After premixing, sampling to measure the mixing uniformity CV% value of the mixture=2.86%, and satisfying the premixing technical standard CV < 5%;
s4, in the feeding period of the weightless scale, the premix (11 kg) is directly put into the weightless scale through a discharge hole of the mixer, after the mixer finishes feeding, the premixing of the materials is continuously repeated, the weightless scale is continuously added, the premixed materials (11 kg plus or minus 25g, the feeding precision is 0.227%) are continuously added every 20 minutes, and the feeding speed is 0.55kg/min.
Mixing uniformity detection: taking 10 samples at each part of a mixer by using an inserted sampler, weighing 110g of each sample, detecting the protein content by using a Kjeldahl nitrogen analyzer, calculating the average value (10.04) of the protein powder content of the 10 samples, and measuring the standard deviation value (0.288) according to the test results shown in Table 1; calculated is the mixed sample CV% value = (standard deviation value x 100%)/average = (0.288 x 100%)/10.04 = 2.86%)
The mixing ratio=10:1, 110g sample, protein powder content theoretical value 10g, average value 10.04g for sample detection, deviation 0.04g, deviation 4g for every 1kg, bran content theoretical value 100g, average value 99.96g for sample detection, deviation 0.04g, deviation 4g for every 10 kg.
Table 1 example 1 test data table
Example 1 can ensure an accuracy of addition of 11kg + -25 g (i.e., 0.227%) of the weight loss scale premix.
Table 2 example 1 theoretical calculation weightless Scale continuous addition precision of each material
| Material | Additive amount | Precision of |
| Bran | 10kg | ±22.7g |
| Protein powder | 1kg | ±2.27g |
| Aggregate mixture | 11kg | ±25g |
Table 3 example 1 calculation of continuous addition accuracy of each material in combination with consideration of mixing uniformity of mixer
| Material | Additive amount | Weightlessness scale precision | Accuracy of mixing uniformity | Accumulated precision deviation |
| Bran | 10kg | ±22.7g | ±4g | ±26.7g |
| Protein powder | 1kg | ±2.27g | ±4g | ±6.27g |
| Aggregate mixture | 11kg | ±25g |
Comparative example 1
2 main materials, bran (density: 200g/L, 10kg continuously added every 20 minutes), protein powder (density: 500g/L, 1kg continuously added every 20 minutes) were continuously and precisely added. Continuously adding a weightless scale, continuously adding bran (10 kg+/-25 g, the adding precision is 0.25%) every 20 minutes, wherein the feeding speed is required to be 0.5kg/min, and the feeding is required to be 10kg every 20 minutes; continuously adding a weightless scale, continuously adding protein powder (1 kg+/-25 g, the adding precision is 2.5%) every 20 minutes, wherein the feeding speed is required to be 0.05kg/min, and 1kg of feed is required to be fed every 20 minutes;
in comparative example 1, the amount of added protein powder per 20 minutes is only 1kg, the weight loss is less than 10kg + -25 g, the adding accuracy of the protein powder can be ensured to be only 1kg + -25 g (namely, 2.5%), the adding accuracy is very poor, and the requirements of customers can not be met.
Table 4 comparative table of continuous addition accuracy of example 1 and comparative example 1
| Material | Additive amount | Embodiment accumulated precision deviation | Comparative example precision deviation |
| Bran | 10kg | ±26.7g(0.267％) | ±25g(0.25％) |
| Protein powder | 1kg | ±6.27g(0.627％) | ±25g(2.5％) |
As can be seen from the embodiment 1, the adding precision of the materials (protein powder) with smaller continuous adding amount can be greatly improved by adopting the technological scheme of premixing and then adding, the precision in the embodiment 1 is 1kg plus or minus 6.27g, the precision in the comparative embodiment 1 is 1kg plus or minus 25g, and the precision improvement is nearly 4 times; the addition accuracy of the materials (bran) with a large continuous addition amount is basically not greatly affected, the accuracy in example 1 is 10kg + -26.7 g, and the accuracy in comparative example 1 is 10kg + -25 g.
In comparative example 1, the amount of the material 1 (bran) added was 10kg continuously per 20 minutes, and the amount added per minute was 0.5kg; the continuous adding amount of the material 2 (protein powder) is 1kg every 20 minutes, the adding amount of the material 2 (protein powder) every minute is 0.05kg, 2 weightless scales are needed to be used according to the original technical scheme, the continuous adding precision of the material 1 (bran) weightless scales is 10 kg+/-25 g (0.25%), and the continuous adding precision of the material 2 (protein powder) weightless scales is 1 kg+/-25 g (2.5%).
In example 1, the material 1 (bran) and the material 2 (protein powder) were premixed according to the ratio, and the premixed material was 11kg. After mixing, continuous feed addition can be completed with only 1 weightless scale. The continuous addition amount of the weightless scale was increased to 11kg per 20 minutes, namely 0.55kg/min, and the continuous addition accuracy was 11 kg.+ -. 25g (0.227%).
In comparative example 1, the addition amount of the material 2 is too small (only 1 kg), if the accuracy requirement of 0.25% is required, the accuracy of the weightless scale is required to reach 1 kg+/-2.5 g, and no continuous weightless scale capable of meeting the requirement is basically available at present.
In the embodiment 1, premixing is carried out firstly, and then the premix is continuously added, and the existing continuous addition weightless scale can meet the precision requirement, so that the problem that the material 2 (protein powder) cannot be continuously and accurately added is solved. Meanwhile, one small mixer can replace one weightless scale (if a plurality of materials are premixed, a plurality of weightless scales can be saved), and the cost of the small mixer is far lower than that of the weightless scales, so that the total investment of equipment can be greatly saved.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (4)
1. A method of continuous multicomponent object addition, characterized by: the method comprises the following steps:
s1, determining materials which are premixed first according to continuously added material characteristics, wherein the material characteristics comprise material density and the addition amount of the materials in unit time, and the material characteristics are required to meet the following conditions: the density difference of the premixed materials is less than or equal to 5 times, and the addition amount difference of the premixed materials in unit time is less than or equal to 10 times;
step S2, calculating a mixing ratio of the premixed materials determined in the step S1 according to the addition amount in each unit time, wherein the mixed ratio is …, namely, a mixed ratio of a mixed material 1, a mixed material 2, a mixed material 4, a mixed material 5, … =A, B, C, D and E;
s3, adding the premixed materials obtained in the step S2 into a mixer for premixing, wherein the amount of each premixing is the amount of each material supplementing requirement of the weightless scale;
s4, discharging the premixed materials into a weightless scale according to the feeding time of the weightless scale, and continuously and accurately adding the premixed materials by the weightless scale according to the total amount of the continuous adding requirements.
2. The method of continuous multicomponent feed addition according to claim 1, wherein: the premixed material in step S1 comprises at least two kinds.
3. The method of continuous multicomponent feed addition according to claim 1, wherein: the premixed materials in the step S1 are solid powdery materials and solid granular materials.
4. The method of continuous multicomponent feed addition according to claim 1, wherein: in the step S3, the rotating speed of the mixer is 40-50 rpm, and the premixing time is 5-10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311602359.1A CN117643828A (en) | 2023-11-28 | 2023-11-28 | Method for adding continuous multicomponent materials |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311602359.1A CN117643828A (en) | 2023-11-28 | 2023-11-28 | Method for adding continuous multicomponent materials |
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| CN117643828A true CN117643828A (en) | 2024-03-05 |
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| CN202311602359.1A Pending CN117643828A (en) | 2023-11-28 | 2023-11-28 | Method for adding continuous multicomponent materials |
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