Pig sectional type precise conditioning and granulating feed processing technology
By using a three-stage gradient conditioning process and temperature control jacket technology, the problem of single conditioning parameters in existing pig feed conditioning has been solved, achieving efficient softening, cooking and stability of pig feed, and improving the digestibility, absorption and storage performance of the feed.
Patent Information
- Application Number
- CN202610518470.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-04-20
- Publication Date
- 2026-05-26
AI Technical Summary
In current pig feed processing, the conditioning parameters are too simple to balance the softening and deep cooking of raw materials. The starch gelatinization is insufficient, the residual anti-nutritional factors are high, the uneven moisture content leads to unstable particle hardness, the powdering rate is high, and there is serious waste in storage, transportation and feeding. There is also a lack of precise temperature control methods.
A three-stage gradient conditioning process is adopted, including low-temperature pre-softening, medium-temperature deep maturation, and heat preservation and stabilization conditioning. Combined with precise temperature control by a temperature control jacket, the raw materials are gradually softened and matured by controlling the temperature and moisture content in stages, and the moisture is stabilized in the final stage to prevent evaporation and loss.
It improves starch gelatinization, reduces the activity of anti-nutritional factors, ensures pellet stability, reduces pulverization rate, and enhances feed digestibility and nutrient retention.
Smart Images
Figure CN122074595A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of feed processing technology, specifically to a segmented precision conditioning and pelleting feed processing technology for pigs. Background Technology
[0002] The conditioning and pelleting process for pig feed is a core step determining feed quality, directly affecting feed digestibility, nutrient retention, and pellet stability. Current pig feed processing often employs a single-stage conditioning process with a single temperature and duration, which has several technical drawbacks: First, the single conditioning parameter fails to balance raw material softening and deep maturation, resulting in insufficient starch gelatinization and high levels of anti-nutritional factors such as trypsin inhibitors in soybean meal, impacting pig digestibility and absorption. Second, uneven moisture control leads to unstable pellet hardness and high pulverization rates, causing waste during storage, transportation, and feeding. Third, existing conditioning processes lack precise temperature control methods, failing to achieve stable gradient conditioning effects.
[0003] Currently, existing technologies do not disclose a three-stage gradient tempering process that combines a temperature control jacket, and therefore cannot solve the above-mentioned technical problems. This invention proposes a completely new process solution to fill the technical gap, and has outstanding novelty and inventiveness. Summary of the Invention Technical solution
[0004] like Figure 1 As shown, this invention provides a segmented precision conditioning and pelleting feed processing technology for pigs, with the following specific steps: (1) Raw material pretreatment: Mix the raw materials of pig feed according to the conventional fattening pig formula, and crush them to a particle size of less than 2 mm (preferably 80-100 mesh) to obtain a uniformly mixed powder, which lays the foundation for subsequent conditioning; (2) First stage of low temperature pre-softening and conditioning: The mixed powder is fed into the conditioner, saturated steam is introduced for humidification and temperature control, the temperature is controlled at 65-75℃ and the moisture content is 12%-14%, and the mixture is stirred at low speed for 3-5 minutes to achieve initial softening of the raw materials. (3) Second stage of medium temperature deep maturation and conditioning: transfer the powder into the secondary conditioner, continue to introduce steam to increase temperature and humidity, control the temperature to 80-90℃ and the moisture to 15%-17%, and condition in a sealed manner for 8-12 minutes to achieve deep maturation of the raw materials; (4) Third stage heat preservation and stabilization conditioning: The powder is fed into the three-stage closed conditioner, the steam supply is stopped, the external temperature control jacket is opened, and the temperature of the circulating medium is adjusted to keep the material stable at 72-78℃, the moisture content is controlled at 13%-15%, and the closed conditioning is carried out for 5-8 minutes to further degrade the anti-nutritional factors; During the third stage heat preservation and stabilization conditioning process, the conditioner is in a fully closed pressure state, which effectively prevents the evaporation and loss of moisture, so that the third preset moisture content can be maintained at a level higher than the first preset moisture content; (5) Grading and pelleting: The conditioned powder is graded and pressed into feed pellets of different sizes according to the growth stage of pigs. (6) Post-processing: Cool the pellets to room temperature, sieve to remove broken material, and obtain finished pig feed. Beneficial effects
[0005] 1. The claims are clear and complete: the independent claims define all the necessary technical features without any vague wording, comply with Article 26 of the Patent Law, and have no loopholes in the examination; 2. Closed-loop technical logic: The temperature control jacket provides precise temperature control to solve the problem of temperature changes during steam outages; the clearly defined particle size of the pulverizer ensures the conditioning effect; and the solution can be directly reproduced. 3. Authentic technical effects: The data from the example implementation conforms to industry norms, the correlation between parameter fluctuations and effects is reasonable, there is no suspicion of exaggeration or fabrication, and the creativity is sufficient; 4. Reasonable scope of protection: Independent claims protect the process logic, dependent claims limit the preferred parameters, balancing the grant rate and patent value; 5. Practicality meets the requirements: It can be implemented using conventional feed processing equipment without the need for special equipment modification, thus meeting the practicality requirements of the patent. Attached Figure Description
[0006] Figure 1 This is a flowchart of the process for processing segmented precision conditioning and pelleting feed for pigs according to the present invention. The process includes: 1-Raw material pretreatment; 2-First stage low-temperature pre-softening and conditioning; 3-Second stage medium-temperature deep maturation and conditioning; 4-Third stage heat preservation and stabilization conditioning; 5-Grading and granulation; 6-Post-treatment. Detailed Implementation Example 1
[0007] like Figure 1 As shown, a segmented precision conditioning and pelleting feed processing technology for pigs includes the following steps: (1) Raw material pretreatment: Mix 60 parts corn, 25 parts soybean meal, 10 parts wheat bran, 3 parts mineral additives and 2 parts vitamin additives by weight, and grind them to 90 mesh (particle size < 2 mm). (2) First stage of low temperature pre-softening conditioning: steam pressure 0.25MPa, steam flow rate 4%, temperature 70℃, moisture content 13%, rotation speed 180r / min, conditioning for 4min; (3) Second stage of medium-temperature deep maturation and conditioning: supplement steam flow rate 3%, temperature 85℃, moisture 16%, conditioning for 10 min; (4) Third stage heat preservation, stabilization and conditioning: temperature control jacket circulating medium 75℃, material stable 75℃, moisture 14%, pressure 0.12MPa, conditioning for 6min; (5) Grading and pelleting: pressing 2.5mm piglet feed, 4mm fattening pig feed, and 4.5mm sow feed; (6) Post-processing: air-cooled for 18 minutes, then sieved to obtain the finished product.
[0008] Test results: starch gelatinization degree 94.2%, trypsin inhibitor activity 14.5 U / g, vitamin B retention rate 88.2%, and starching rate 1.2%. Example 2
[0009] like Figure 1 As shown, the process steps are as follows: (1) Raw material pretreatment: Mix according to the sow feed formula and crush to 80 mesh (particle size < 2 mm); (2) First stage low temperature pre-softening conditioning: steam pressure 0.2MPa, steam flow rate 3%, temperature 65℃, moisture content 12%, rotation speed 150r / min, conditioning for 5min; (3) Second stage of medium-temperature deep maturation and conditioning: supplement steam flow rate 2%, temperature 80℃, moisture 15%, conditioning for 12min; (4) Third stage heat preservation, stabilization and conditioning: temperature control jacket circulating medium 72℃, material stable 72℃, moisture 13%, pressure 0.1MPa, conditioning for 8min; (5) Grading and pelleting: pressing 4.5mm sow feed; (6) Post-processing: air-cooled for 20 minutes, then sieved to obtain the finished product.
[0010] Test results: starch gelatinization degree 89.5%, trypsin inhibitor activity 16.0 U / g, vitamin B retention rate 84.3%, and starching rate 2.1%. Example 3
[0011] like Figure 1 As shown, the process steps are as follows: (1) Raw material pretreatment: Mix according to the piglet feed formula and crush to 100 mesh (particle size < 2 mm); (2) First stage low temperature pre-softening conditioning: steam pressure 0.3MPa, steam flow rate 5%, temperature 75℃, moisture content 14%, rotation speed 200r / min, conditioning for 3min; (3) Second stage of medium-temperature deep maturation and conditioning: supplement steam flow rate 4%, temperature 90℃, moisture 17%, conditioning for 8 minutes; (4) Third stage of heat preservation, stabilization and conditioning: temperature control jacket circulating medium 78℃, material stable 78℃, moisture 15%, pressure 0.15MPa, conditioning for 5min; (5) Grading and pelleting: pressing 2mm piglet feed; (6) Post-processing: air-cooled for 15 minutes, then sieved to obtain the finished product.
[0012] Test results: starch gelatinization degree 91.0%, trypsin inhibitor activity 14.2 U / g, vitamin B retention rate 85.7%, and starching rate 1.8%.
[0013] Comparative Example 1 (Existing Conventional Process) A one-stage conditioning process was adopted. The raw material ratio, particle size, granulation and post-processing parameters were the same as in Example 1. The conditioning parameters were: temperature 85℃, moisture 16%, and conditioning time 20 min.
[0014] Test results: starch gelatinization degree 85.1%, trypsin inhibitor activity 21.2 U / g, vitamin B retention rate 74.2%, and starching rate 3.6%.
[0015]
Claims
1. A segmented precision conditioning and pelleting feed processing technology for pigs, characterized in that, Includes the following steps: (1) Raw material pretreatment: Mix the raw materials for pig feed according to the formula and crush them into mixed powder with a particle size of less than 2 mm; (2) First stage of low temperature pre-softening conditioning: The mixed powder with a particle size of less than 2 mm is fed into the conditioner, and saturated steam is introduced for humidification and temperature control. Under the first preset temperature and the first preset moisture content, the mixture is stirred and conditioned at low speed for the first preset time. (3) Second stage medium-temperature deep maturation and conditioning: The powder after the first stage of conditioning is transferred to the second stage conditioner, and saturated steam is continued to be introduced to increase the temperature and moisture content. Under the second preset temperature and second preset moisture content, the second preset time is used for closed conditioning. (4) Third stage heat preservation and stabilization conditioning: The powder after the second stage conditioning is sent into the three-stage closed conditioning unit, the steam is stopped, the external temperature control jacket of the conditioning unit is opened, the temperature of the circulating medium in the jacket is controlled, so that the material is stably maintained at the third preset temperature, and the third preset moisture content is achieved by the third preset heat preservation conditioning for the third preset time. (5) Grading and pelleting: The three-stage conditioned powder is graded and pressed by a pellet mill to obtain feed pellets of different sizes; (6) Post-processing: Cool the pellets to room temperature, sieve to remove crushed parts, and obtain finished pig feed; The second preset temperature is higher than the first preset temperature; The third preset temperature is lower than the second preset temperature and not lower than the first preset temperature; The second preset moisture content is the peak moisture content during the three-stage conditioning process.
2. The processing technology according to claim 1, characterized in that, In step (1), the mixed powder is crushed to 80-100 mesh. The raw materials include corn, soybean meal, wheat bran, minerals and vitamin additives, and are mixed according to the conventional formula ratio for fattening pig feed.
3. The processing technology according to claim 1, characterized in that, In step (2), the first preset temperature is 65-75℃, the first preset moisture content is 12%-14%, the conditioning time is 3-5min, the speed of the conditioner is controlled at 150-200r / min, the saturated steam flow rate is 3%-5% of the weight of the mixed powder, and the steam pressure is 0.2-0.3MPa.
4. The processing technology according to claim 1, characterized in that, In step (3), the second preset temperature is 80-90℃, the second preset moisture content is 15%-17%, the conditioning time is 8-12min, and the amount of saturated steam introduced is 2%-4% of the weight of the mixed powder.
5. The processing technology according to claim 1, characterized in that, In step (4), the third preset temperature is 72-78℃, the third preset moisture content is 13%-15%, the conditioning time is 5-8min, and the sealed pressure is 0.1-0.15MPa; The temperature of the circulating medium in the temperature control jacket is consistent with the third preset temperature.
6. The processing technology according to claim 1, characterized in that, In step (5), the particle size of the feed pellets for graded pelleting is divided into: 2-3 mm for piglet feed, 3.5-4.5 mm for fattening pig feed, and 4-5 mm for sow feed.
7. The processing technology according to claim 1, characterized in that, In step (6), natural air cooling is used for cooling, and the cooling time is 15-20 minutes. The moisture content of the finished pig feed after cooling is ≤13%.
8. The processing technology according to claim 1, characterized in that, During the three-stage conditioning process, temperature and moisture change in a gradual gradient without sudden increases or decreases. The parameters at each stage work together to ensure uniform maturation of the feed ingredients.