Feed processing method and processing equipment

Abstract

The invention relates to a feed processing method and processing device.The feed processing method comprises the steps that raw materials are smashed and mixed with a first additive to generate a first mixed material, the first mixed material is subjected to superfine smashing treatment, the first mixed material obtained after superfine smashing is mixed with a second additive to generate a second mixed material, and the second mixed material is mixed with a third additive to generate a feed. Performing crushing treatment on the second mixture, performing expansion granulation on the crushed second mixture to generate pellet feed, and performing crushing treatment on the pellet feed to obtain feed with different particle sizes; according to the feed processing method and processing equipment disclosed by the invention, the mixing effect of the ingredients during feed production and the quality of the finally prepared finished product can be effectively ensured through multiple times of crushing and batch mixing, so that macromolecular substances such as protein and starch in the feed are convenient to digest and absorb; meanwhile, the pellet feed generated through puffing is crushed into feed with different particle sizes, so that animals in different growth stages can eat the feed, and the utilization efficiency of the feed is indirectly improved.

Description

Technical Field

[0001] The present application relates to the technical field of feed preparation, and in particular to a feed processing method and processing equipment. Background Art

[0002] With the growth of global demand for seafood, shrimp farming has developed rapidly. In the shrimp farming process, feed costs account for a large proportion of the total farming cost, and feed quality also has a direct impact on the farming effect.

[0003] However, with the rapid development of shrimp farming, the demand for high-quality and high-efficiency feeds has been growing in the production of shrimp feeds, and the limitations of traditional feed processing technology have gradually emerged. This is mainly because macromolecular nutrients such as protein and starch in traditional feeds are difficult to be fully absorbed and utilized by shrimps, which not only wastes precious feed resources, but also affects the growth rate and health status of shrimps. In addition, traditional feeds often ignore the specific needs of shrimps for the hardness and shape of feed particles. Inappropriate hardness may make it difficult for shrimps to chew or swallow, while unreasonable shape may affect the shrimps' desire to eat, thereby indirectly reducing the utilization efficiency of feed. Summary of the invention

[0004] Based on this, it is necessary to provide a feed processing method and processing equipment to address the problem that the above-mentioned traditional feed processing technology has great limitations.

[0005] According to one aspect of the present application, there is provided a feed processing method, comprising:

[0006] The raw material is crushed and mixed with the first additive to generate a first mixed material;

[0007] Performing ultrafine grinding on the first mixed material;

[0008] Mixing the ultrafinely crushed first mixed material with the second additive to generate a second mixed material;

[0009] pulverizing the second mixed material;

[0010] Expanding and granulating the crushed second mixed material to produce pellet feed;

[0011] Crushing pellet feed;

[0012] The crushed pellet feed is screened to obtain feeds with different particle sizes.

[0013] In one embodiment, the step of crushing the raw material and mixing it with the additive to generate the first mixed material includes:

[0014] dividing the crushed raw material into a first raw material and a second raw material;

[0015] Mixing the first raw material with the first material to generate a premix;

[0016] Mixing the second raw material with the second material and the premix to generate a first mixed material;

[0017] The first additive includes a first material and a second material.

[0018] In one embodiment, the first material is squid paste.

[0019] In one embodiment, the ultrafine grinding of the first mixed material comprises:

[0020] Determining whether the particle size of the first mixture meets the requirements;

[0021] If the particle size of the first mixed material meets the requirements, ultrafine grinding is performed;

[0022] If the particle size of the first mixed material does not meet the requirements, the first mixed material is firstly subjected to secondary pulverization and then to ultrafine pulverization.

[0023] In one embodiment, the step of sending feeds of different particle sizes to different processing institutions for processing includes:

[0024] The feed with the first particle size is crushed again together with the pellet feed;

[0025] The feed with the second particle size is screened again, and the screened first qualified finished product is sent to the first processing mechanism for processing;

[0026] The feed with the third particle size is screened again, and the screened second qualified finished product is sent to the second processing mechanism for processing;

[0027] The first particle size is larger than the second particle size, and the second particle size is larger than the third particle size.

[0028] In one embodiment, the feed processing method further comprises: screening and removing impurities from the raw materials before crushing.

[0029] According to another aspect of the present application, there is provided a feed processing device, comprising:

[0030] A first crushing mechanism, used for crushing the raw material;

[0031] A first mixing mechanism, disposed downstream of the first pulverizing mechanism, for mixing the pulverized raw material with a first additive to generate a first mixed material;

[0032] An ultrafine grinding mechanism, arranged downstream of the first mixing mechanism, for ultrafine grinding the first mixed material;

[0033] A second mixing mechanism is arranged downstream of the ultrafine grinding mechanism and is used to mix the ultrafinely ground first mixed material with the second additive to generate a second mixed material;

[0034] a second crushing mechanism, disposed downstream of the second mixing mechanism, for crushing the second mixed material;

[0035] An expansion granulation mechanism, arranged downstream of the second pulverizing mechanism, for expanding the pulverized second mixed material to form granular feed;

[0036] A crushing and screening mechanism, arranged downstream of the expansion granulation mechanism, for crushing the pellet feed;

[0037] The screening mechanism is arranged downstream of the crushing and screening mechanism and is used for screening the crushed granular feed into feeds of different particle sizes.

[0038] In one embodiment, the first mixing mechanism includes a first mixer and a second mixer, and the first mixer is arranged downstream of the pretreatment mechanism, and is used to mix the first raw material in the crushed raw material with the first material in the first additive to generate a premix;

[0039] The second mixer is arranged downstream of the first mixer, and is used to mix the second raw material in the crushed raw material with the second material and the premix in the first additive to generate the first mixed material.

[0040] In one embodiment, the feed processing equipment further comprises a secondary pulverizing mechanism, which is disposed between the first mixing mechanism and the ultrafine pulverizing mechanism and is used for secondary pulverizing the first mixed material whose particle size does not meet the requirements.

[0041] In one embodiment, the feed processing equipment further comprises a pre-processing mechanism, which is arranged upstream of the first crushing mechanism and is used for screening and removing impurities from unprocessed raw materials.

[0042] The feed processing method and processing equipment can effectively ensure the mixing effect of the ingredients during feed production and the quality of the final product through multiple crushing and batch mixing, so that the macromolecular substances such as protein and starch in the feed are easy to digest and absorb. At the same time, by crushing the expanded granular feed into feeds of different particle sizes, it can be eaten by animals at different growth stages to meet the growth needs of animals at different periods. In addition, due to the appropriate hardness, it is easy for animals to chew or swallow, ensuring the desire to eat, thereby indirectly improving the utilization efficiency of the feed, and effectively solving the problem of incompletely digested feed residues deposited on the bottom of the water, causing water quality deterioration and increasing breeding risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG. 1 is a schematic flow chart of a processing method according to some embodiments of the present application.

[0044] FIG. 2 is a schematic diagram of the structure of processing equipment according to some embodiments of the present application.

[0045] FIG. 3 is a schematic structural diagram of section A of FIG. 2 .

[0046] FIG. 4 is a schematic structural diagram of a first mixing mechanism of a processing device according to some embodiments of the present application.

[0047] FIG5 is a schematic diagram of the structure between the ultrafine grinding mechanism and the second mixing mechanism of the processing equipment of some embodiments of the present application.

[0048] FIG6 is a schematic diagram of the structure of an expansion granulation mechanism of a processing device according to some embodiments of the present application.

[0049] FIG. 7 is a schematic diagram of the structure of a processing mechanism of a processing device according to some embodiments of the present application.

[0050] Reference numerals:

[0051] 1. The first crushing mechanism; 11. The primary crushing sedimentation chamber; 12. The primary crushing dust removal wind net; 13. The three-way after the primary crushing;

[0052] 2. First mixing mechanism; 21. First mixer; 22. Second mixer; 23. Cuttlefish paste addition chamber; 24. Cuttlefish paste addition scale; 25. Cuttlefish paste addition chamber; 26. Primary crushing chamber group; 27. Primary batching scale;

[0053] 3. Ultrafine grinding mechanism; 31. Ultrafine grinding pneumatic conveying system; 32. High square screen 1; 33. Powder return bin after vibrating screen; 34. Ultrafine grinding back bin group;

[0054] 4. Second mixing mechanism; 41. Second batching scale; 42. Second batching small material adding port;

[0055] 5. Second crushing mechanism;

[0056] 6. Expansion granulation mechanism; 61. Arch breaking bin for granulation; 62. Frequency conversion double-axis conditioner; 63. Frequency conversion single-axis conditioner; 64. Stabilizer; 65. Cooler; 66. Granulation finished product bin; 67. Belt conveyor 1;

[0057] 7. Crushing and screening mechanism;

[0058] 8. Pretreatment agency;

[0059] 9. Processing mechanism; 91. Large miscellaneous bin; 92. 0.5mm particle size bin; 93. 0.3mm particle size bin; 94. Fine powder bin; 95. Short chopped material elevator; 96. Belt conveyor 2; 97. 0.3mm packing port; 98. Return material bin group; 99. Return material and powder bin;

[0060] 10. Secondary crushing mechanism. DETAILED DESCRIPTION

[0061] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0062] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0063] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0065] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0067] With the growth of global demand for seafood, especially shrimp as one of the important economic aquatic products, its aquaculture industry has developed rapidly. However, in this process, feed costs account for a large proportion of the total aquaculture cost, and the quality of feed directly affects the aquaculture effect. Traditional shrimp feed processing methods have certain limitations. For example, due to the lack of effective pretreatment methods, some nutrients in the feed are difficult to be fully absorbed and utilized by shrimp; at the same time, unreasonable design of particle hardness and shape may also affect the feeding behavior of shrimp, thereby indirectly reducing the feed conversion rate. In the field of aquatic feed processing, especially in the production of shrimp feed, traditional processing technology faces many challenges. With the rapid development of shrimp farming, the demand for high-quality and high-efficiency feed is increasing, and the limitations of traditional feed processing technology are gradually emerging. The following are the main problems existing in the prior art:

[0068] Low digestion and absorption rate: Traditional shrimp feeds often lack effective pretreatment methods, which makes it difficult for shrimps to completely digest and absorb macromolecules such as protein and starch in the feed. This not only wastes precious feed resources, but also affects the growth rate and health status of shrimps; in the process of feed processing, if the physiological characteristics of shrimp intestines are not fully considered, the feed ingredients may not be easily decomposed and absorbed, thereby reducing the nutritional value of the feed. Unreasonable design of particle hardness and shape: Traditional granulation technology often ignores the specific needs of shrimps for the physical properties of feed, such as the hardness and shape of particles. Inappropriate hardness may make it difficult for shrimps to chew or swallow, while unreasonable shape may affect the shrimps' desire to eat, thereby indirectly reducing the utilization efficiency of feed; shrimps at different growth stages have different requirements for feed particles, and traditional processes often find it difficult to provide personalized solutions, resulting in the same type of feed being difficult to meet the needs of all shrimps. Environmental pollution problems: Incompletely digested feed residues will settle at the bottom of the water, causing water quality deterioration and affecting the living environment of shrimps. Over a long period of time, these residues may also cause diseases and increase the risk of breeding. In addition, if the wastewater and waste gas generated during feed processing are not properly treated, they will also have an adverse impact on the surrounding environment. Production efficiency and cost issues: Traditional feed production lines may have low production efficiency due to aging equipment or backward technology, which increases production costs; the lack of automated control and monitoring systems makes it difficult to ensure the consistency of product quality during large-scale production, and also increases the difficulty and error rate of manual operation. Technological innovation and application lag: Although pre-digestion technology and expansion granulation technology have been proven to significantly improve feed performance, in actual applications, due to high technical barriers, many companies have not yet mastered these advanced technologies, or are limited by high transformation costs and cannot update equipment in a timely manner; the speed of technological updates is slow, which is not conducive to the competitiveness of the entire industry. Lack of personalized services: For shrimp farming needs in different regions and different farming conditions, traditional feed processing technology often provides standardized products, which are difficult to meet the personalized requirements of specific markets or customers; the lack of customized services limits the diversity and adaptability of feed products, which is not conducive to meeting diversified market needs.

[0069] In summary, the problems existing in the existing technology not only restrict the development of the shrimp feed industry, but also bring additional cost burden to farmers. Therefore, it is particularly urgent to develop a new type of pre-digested shrimp feed expansion granulation processing technology and its supporting equipment to solve the above technical problems in a targeted manner and promote the technological progress and industrial upgrading of the aquatic feed industry.

[0070] Referring to FIG. 1 and FIG. 2 , an embodiment of the present application provides a feed processing method, comprising:

[0071] The raw material is crushed and mixed with the first additive to generate the first mixed material. Specifically, the raw material is crushed by the first crushing mechanism 1, and the crushed raw material is mixed with the first additive by the first mixing mechanism 2 to generate the first mixed material.

[0072] More specifically, the raw materials are put into the first crushing mechanism 1 for coarse powder as required, and the crushing requires a standard sieve of 40 mesh, and all of them pass through. The crushed raw materials enter the primary crushing sedimentation chamber 11, and the dust generated is handled by the primary crushing dust removal wind net 12. The crushed raw materials after sedimentation are transported to the post-primary crushing tee 13 and distributed as required. Part of the crushed raw materials are sent to the first mixing mechanism 2 to mix with the first additive to generate the first mixed material.

[0073] The first mixed material is subjected to ultrafine grinding. Specifically, the first mixed material is subjected to ultrafine grinding by the ultrafine grinding mechanism 3, so that the first mixed material is subsequently mixed with the second additive to generate the second mixed material.

[0074] More specifically, referring to Figures 1, 2 and 3, the first mixed material is sent to the ultrafine grinding mechanism 3 for grinding, and the passing rate of the first mixed material after grinding through the 80-mesh standard sieve is greater than %. The first mixed material after ultrafine grinding passes through the ultrafine grinding pneumatic conveying system 31, is processed by the shakron and the ultrafine dust removal wind net, and then enters the high square screen 32 for screening. The screened material is discharged from the screened material outlet and sent to the converging screw dragon for screening through the vibrating screen. After entering the vibrating screen, it is returned to the powder bin 33 for standby use. The first mixed material that has passed the high square screen 32 is distributed to the bin group 34 after ultrafine grinding for secondary batching.

[0075] The first mixed material after ultrafine grinding is mixed with the second additive to generate the second mixed material. Specifically, the first mixed material after ultrafine grinding is mixed with the second additive to generate the second mixed material through the second mixing mechanism 4. The above processing process can improve the digestibility and absorption rate of the feed by using pre-digestion technology and reduce the impact on the environment.

[0076] More specifically, referring to Figures 1, 2 and 4, a secondary batching scale 41 balancing air flow wind net is set between the secondary batching scale 41 and the second mixing mechanism 4. The secondary batching scale 41 can weigh 3000kg of materials per batch, and the materials are fed into the second mixing mechanism 4. Small materials or added elements are added to the secondary batching small material addition port 42 according to product needs. 70-80℃ hot water and 70-80℃ phospholipid oil are added to the second mixing mechanism 4 at the water and oil addition system pipeline to participate in the mixing of materials. The mixing time is 180-300s, and the mixing weight of each batch is 3000kg. The mixed materials of the secondary batching are transported to the secondary batching elevator by the secondary batching post-conveying scraper, and then lifted and transported to the permanent magnetic cylinder for iron removal.

[0077] The second mixed material is crushed. Specifically, the second mixed material is crushed by the second crushing mechanism 5 so as to be subsequently expanded and granulated to ensure the quality of the generated pellet feed.

[0078] More specifically, referring to Figures 1, 2 and 5, the second mixed material after passing through the permanent magnetic cylinder enters the to-be-crushed bin after the secondary batching, and is then sent to the second crushing mechanism 5 for crushing by the conveying auger after the secondary batching. The crushed material is conveyed to the to-be-granulated arch-breaking bin 61 by the conveying scraper after the secondary batching crushing, and is output by the to-be-granulated feeder, with an output of 6-12 tons / hour.

[0079] The crushed second mixed material is expanded and granulated to generate pellet feed. Specifically, the crushed second mixed material is expanded and granulated by the expansion granulation mechanism 6 to generate pellet feed. This step can expand the material to form a soft and porous structure through expansion granulation, thereby increasing the palatability of the feed and improving its solubility.

[0080] More specifically, the crushed second mixed material enters the variable frequency double-shaft conditioner 62 for heating treatment. The material after conditioning by the variable frequency double-shaft conditioner 62 enters the expander for mechanical extrusion gelatinization. The material temperature at the expander outlet is generally detected to be 100-110°C, the material moisture is 13-17%, and the material residence time in the expander is between 5-15s. After the material is extruded and output, it enters the variable frequency single-shaft conditioner 63 for disintegration treatment. Here, the material temperature is between 95-105°C, the moisture is between 13-14%, and the material residence time is 30-90s. Among them, the variable frequency double-shaft conditioner 62 can add steam, and hot water can be added to the moisture online detection system in the cooler 65 for real-time feedback detection, and the amount of water added can be controlled in real time. The set temperature of the variable frequency double-shaft conditioner 62 is generally 95-105°C, the material residence time is 30-90s, and the moisture after conditioning is generally between 15-19%.

[0081] After completing the above process, the material enters the expansion granulation mechanism 6 for granulation, and the moisture content at the outlet of the expansion granulation mechanism 6 is between 12.5-13.5%. The material enters the stabilizer 64 for post-ripening treatment, and the treatment time is 55-90 minutes. The treated material is placed in the cooler 65 for cooling treatment. At the same time, the moisture online detection system detects the moisture in real time and is linked to the tempering moisture addition port. The moisture content of the cooled finished material is between 9.5-10.5% and is qualified, and the powder content of the finished material is ≦0.05%. The water resistance requirements of the finished granules are 10 minutes in hot water, no collapse, cracks less than 1.5%, and more than 120 minutes in normal temperature water.

[0082] In addition, the expansion granulation mechanism 6 is also equipped with a cooling dust removal wind net dominated by Shaklon, and finally enters the environmental protection system. The cooled finished granular material is sent to the post-granulation elevator through the post-cooling conveying scraper, and some sampling materials or finished products can be put in through the finished product manual feeding port set in the post-granulation elevator. The cooled granular material is transported to the high square screen 2 for screening after lifting, and the screened material is discharged from the screened material outlet and transported to the return material bin for standby use. Qualified finished granular materials are transported to the granulation finished product bin 66 by the finished product tee, where the particles in the B01 finished product bin in the granulation finished product bin 66 are screened again by the finished product screen 1, and the screened material outlet removes the screened material and enters the return material bin for standby use. Qualified finished materials enter the finished product buffer hopper, and after the powder removal treatment of the powder absorber 1, they enter the packaging buffer hopper 1, and are packaged and output by the packaging scale 1 according to the set packaging weight to the belt conveyor 1 67 for output. The packaging dust removal wind net is responsible for settling and collecting the dust processed by the powder absorber 1 and outputting it from the settled material outlet to the return bin for standby use.

[0083] The pellet feed is crushed. Specifically, the pellet feed is crushed by the crushing and screening mechanism 7, and the crushed pellet feed is screened to obtain feed with different particle sizes for animals at different growth stages to eat, thereby meeting the growth needs of animals at different stages.

[0084] More specifically, the pellet feed in the B02 bin in the finished pellet bin 66 is conveyed by the short-cut material conveying scraper through the V-shaped gate, and is lifted and conveyed to the permanent magnetic drum by the short-cut material elevator 95 for iron removal. The processed pellet feed enters the bin to be crushed, and the crusher crushes the finished pellet feed. The crushed pellet feed can enter the multi-layer screen for screening, and then the corresponding screened feed is sent to different processing mechanisms 9 according to the particle size by the post-crushing tee for the next step of processing.

[0085] In summary, the feed processing method of the present application can effectively ensure the mixing effect of the ingredients during feed production and the quality of the final product through multiple crushing and batch mixing, so that the macromolecular substances such as protein and starch in the feed are easy to digest and absorb. At the same time, by crushing the expanded granular feed into feeds of different particle sizes for animals at different growth stages to eat, the growth needs of animals at different periods can be met. Moreover, due to the appropriate hardness, it is easy for animals to chew or swallow, ensuring the desire to eat, thereby indirectly improving the utilization efficiency of the feed, and effectively solving the problem of incompletely digested feed residues deposited on the bottom of the water, causing water quality deterioration and increasing breeding risks.

[0086] Referring to FIG. 1 , in one embodiment, the feed processing method further includes: screening and removing impurities from the raw materials before crushing to ensure the cleanliness of the raw materials.

[0087] Specifically, a dust removal system is configured at the raw material feeding port. When the raw materials are fed through the raw material feeding port, they are dusted by the dust removal system. The fed raw materials are transported to the raw material elevator and enter the raw material cleaning screen for screening. The screened powder enters the raw material return powder bin, and the remaining materials flow through the permanent magnetic cylinder for iron removal and then enter the raw material distributor through the raw material buffer dust removal hopper, and are fed into the primary crushing waiting bin group for standby use according to the setting requirements.

[0088] In one embodiment, the raw material is crushed and mixed with an additive to generate a first mixture, including: dividing the crushed raw material into a first raw material and a second raw material. The first raw material is mixed with the first material in sequence to generate a premix, and then the second raw material is mixed with the second material and the premix to generate the first mixture. The first additive includes the first material and the second material, and the first material is cuttlefish paste. The above-mentioned adding method can make the raw material better mixed with the cuttlefish paste, overcome the problem that the viscosity of the cuttlefish paste paste leads to poor mixing uniformity of the cuttlefish paste and aquatic feed, and thus ensure the production quality.

[0089] Specifically, referring to Figures 1, 2 and 4, the first raw material is first sent to the cuttlefish paste to be added bin 23, and then the cuttlefish paste adding and batching scale 24 is used for batching. The cuttlefish paste adding and batching scale 24 sets the batching amount to 2000kg at a time, and the weighed first raw material is placed in the first mixer 21 for standby. Then, the cuttlefish paste is added through the cuttlefish paste adding port, and the added amount is ensured to be 2%-12% per ton of material. The first mixer 21 mixes the first raw material and the cuttlefish paste, and the mixing time is 90-180s. The mixed first mixture is sent to the cuttlefish paste tee, and is sent to the cuttlefish paste adding bin 25 for standby according to the system settings. Among them, in order to avoid the airflow of the first mixer 21 discharging material affecting the accuracy of the cuttlefish paste adding and batching scale 24, a cuttlefish paste balancing airflow wind net is set between the cuttlefish paste adding and batching scale 24 and the first mixing mechanism 2.

[0090] After the second raw material is sieved by the cleaning screen, it passes through the permanent magnetic cylinder and enters the dust removal buffer hopper after the primary crushing. The first crushing distributor transports the second raw material to the primary crushing bin group 26 for standby use. After the first mixed material in the cuttlefish paste adding bin 25 is weighed by the primary batching scale, it is mixed with the second raw material in the primary crushing bin group 26 by the second mixer 22. Other materials required by the formula during mixing can be weighed by the primary batching small material scale 27, and after passing through the primary batching small material pneumatic damper, they are placed in the second mixer 22 through the primary batching small material tee for mixing. Among them, in order to prevent the airflow of the second mixer 22 from affecting the accuracy of the cuttlefish paste adding batching scale 24, a primary batching balanced airflow wind net is set between the second mixer 22 and the primary batching scale.

[0091] In one embodiment, the first mixed material is subjected to ultrafine grinding, including: judging whether the particle size of the first mixed material meets the requirements, if the particle size of the first mixed material meets the requirements, then ultrafine grinding is performed, if the particle size of the first mixed material does not meet the requirements, then the first mixed material is subjected to secondary grinding, and then ultrafine grinding is performed. The above process can ensure the quality of the finished product of the second mixed material generated by mixing the first mixed material with the second additive subsequently.

[0092] Specifically, if the particle size of the first mixed material meets the requirements, the first mixed material is ultra-finely pulverized by the ultra-fine pulverizing mechanism 3. If the particle size of the first mixed material does not meet the requirements, it is subjected to dust removal and iron removal operations and then sent to the secondary pulverizing mechanism 10 for pulverization treatment to ensure that the pulverized first mixed material can pass through a 40-mesh standard sieve.

[0093] In one embodiment, feeds with different particle sizes are sent to different processing mechanisms 9 for processing, including: the feed with the first particle size is crushed again together with the pellet feed. The feed with the second particle size is screened again, and the first qualified finished product screened out is sent to the first processing mechanism 9 for processing. The feed with the third particle size is screened again, and the second qualified finished product screened out is sent to the second processing mechanism 9 for processing. The first particle size is larger than the second particle size, and the second particle size is larger than the third particle size.

[0094] Specifically, referring to Figures 1, 2 and 7, the corresponding sieved materials are respectively sent to the large miscellaneous bin 91, the 0.5mm particle size bin 92, the 0.3mm particle size bin 93 and the fine powder bin 94 according to the size of the crushed materials. Among them, the materials in the large miscellaneous bin 91 need to be returned to the short-cut material elevator 95 for re-crushing. The powder in the fine powder bin 94 is output to the return bin or packaged and output.

[0095] The feed in the 0.5mm particle size bin 92 is screened by the finished product screen 2, and the screened material is output to the return bin from the screened material outlet. The qualified finished feed enters the 0.5mm finished product buffer hopper, and enters the packaging buffer hopper 2 after being processed by the powder absorber 2. According to the weighing requirements, it is weighed by the packaging scale 2 and output by the belt conveyor 2 96. The feed in the 0.3mm particle size bin 93 enters the finished product screen for screening, and the screened material is discharged from the screened material outlet to the return bin for standby use. The remaining qualified feed is output and packaged from the 0.3mm packaging port 97.

[0096] The return materials generated in the above production processes enter the return material bin group 98 or are output to the return material tee, the powder generated enters the return material and powder bin 99, and the remaining feed enters the return material distributor and is transported to D10 and D11 at the output port of the primary coarse crushing bin group to be added as needed and participate in the production cycle of each process again.

[0097] Referring to FIG1 , an embodiment of the present application further provides a feed processing device, comprising a first crushing mechanism 1, a first mixing mechanism 2, an ultrafine crushing mechanism 3, a second mixing mechanism 4, a second crushing mechanism 5, an expansion granulation mechanism 6 and a crushing and screening mechanism 7 arranged in sequence according to the production order. Among them, the first crushing mechanism 1, the first mixing mechanism 2, the ultrafine crushing mechanism 3 and the second mixing mechanism 4 mainly use pre-digestion technology to make the feed easier to be absorbed and utilized by the target species, which not only improves the nutritional value of the feed, but also reduces the pollution of the undigested residue to the water quality. The second crushing mechanism 5, the expansion granulation mechanism 6 and the crushing and screening mechanism 7 use the expansion granulation technology to produce feed, and make the particle shape of the produced feed more suitable for the digestive system of shrimps, meeting the needs of shrimps at different growth stages.

[0098] In the specific configuration, the first pulverizing mechanism 1 is used to pulverize the raw material. The first mixing mechanism 2 is arranged downstream of the first pulverizing mechanism 1, and is used to mix the pulverized raw material with the first additive to generate a first mixed material. The ultrafine pulverizing mechanism 3 is arranged downstream of the first mixing mechanism 2, and is used to ultrafine pulverize the first mixed material. The second mixing mechanism 4 is arranged downstream of the ultrafine pulverizing mechanism 3, and is used to mix the ultrafine pulverized first mixed material with the second additive to generate a second mixed material.

[0099] Specifically, referring to Figures 2 and 3, the raw materials are put into the first crushing mechanism 1 for coarse powder as required, and the crushing requires a standard sieve of 40 mesh, and all pass through. The crushed raw materials enter the primary crushing sedimentation chamber 11, and the dust generated is handled by the primary crushing dust removal wind net 12. The crushed raw materials after sedimentation are transported to the post-primary crushing tee 13 and distributed as required. Part of the crushed raw materials are sent to the first mixing mechanism 2 to be mixed with the first additive to generate the first mixed material.

[0100] Referring to Figures 2 and 5, the first mixed material is sent to the ultrafine grinding mechanism 3 for grinding, and the passing rate of the first mixed material after grinding through the 80-mesh standard sieve is greater than %. The first mixed material after ultrafine grinding passes through the ultrafine grinding pneumatic conveying system 31, is processed by the shakron and the ultrafine dust removal wind net, and then enters the high square screen 32 for screening. The screened material is discharged from the screened material outlet and sent to the converging screw dragon for screening through the vibrating screen. After entering the vibrating screen, it is returned to the powder bin 33 for standby use. The first mixed material after the high square screen 32 is distributed to the ultrafine grinding back bin group 34 for secondary batching.

[0101] A secondary batching scale 41 balancing air flow wind net is set between the secondary batching scale 41 and the second mixing mechanism 4. The secondary batching scale 41 can weigh 3000kg of materials per batch, and the materials are sent to the second mixing mechanism 4. Small materials or added elements are added to the secondary batching small material addition port 42 according to product needs. 70-80℃ hot water and 70-80℃ phospholipid oil are added to the second mixing mechanism 4 at the water and oil addition system pipeline to participate in the mixing of materials. The mixing time is 180-300s, and the mixing weight of each batch is 3000kg. The mixed materials of the secondary batching are transported to the secondary batching elevator by the secondary batching post-conveying scraper, and then lifted and transported to the permanent magnetic cylinder for iron removal.

[0102] In order to ensure the quality of subsequent granulation, the second mixed material needs to be crushed again. The second crushing mechanism 5 is arranged downstream of the second mixing mechanism 4, and is used to crush the second mixed material. The expansion granulation mechanism 6 is arranged downstream of the second crushing mechanism 5, and is used to expand the crushed second mixed material to generate pellet feed. The crushing and screening mechanism 7 is arranged downstream of the expansion granulation mechanism 6, and is used to crush the pellet feed and screen the crushed pellet feed into feeds of different particle sizes.

[0103] Specifically, referring to Figures 2 and 6, the second mixed material after the permanent magnetic cylinder enters the to-be-crushed bin after the secondary batching, enters the conveying screw after the secondary batching and is sent to the second crushing mechanism 5 for crushing, and the crushed material is conveyed to the to-be-granulated arch-breaking bin 61 by the conveying scraper after the secondary batching crushing, and is output by the to-be-granulated feeder, with an output of 6-12 tons / hour. The crushed second mixed material enters the variable frequency double-axis conditioner 62 for heating treatment. The material tempered by the variable frequency double-axis conditioner 62 enters the expander for mechanical energy extrusion gelatinization. The material temperature at the expander outlet is generally detected to be 100-110°C, the material moisture is 13-17%, and the material retention time in the expander is between 5-15s. After the material is extruded and output, it enters the variable frequency single-axis conditioner 63 for scattering treatment, where the material temperature is between 95-105°C, the moisture is between 13-14%, and the material retention time is 30-90s. The variable frequency twin-shaft conditioner 62 can add steam, and hot water can be added to the water online detection system in the cooler 65 for real-time feedback detection, and the amount of water added can be controlled in real time. The set temperature of the variable frequency twin-shaft conditioner 62 is generally 95-105°C, the retention time of the material in it is 30-90s, and the moisture content after conditioning is generally between 15-19%.

[0104] After completing the above process, the material enters the expansion granulation mechanism 6 for granulation, and the moisture content at the outlet of the expansion granulation mechanism 6 is between 12.5-13.5%. The material enters the stabilizer 64 for post-ripening treatment, and the treatment time is 55-90min. The treated material is placed in the cooler 65 for cooling treatment. At the same time, the moisture online detection system detects the moisture in real time and is linked to the tempering moisture addition port. The moisture content of the cooled finished material is between 9.5-10.5% and is qualified, and the powder content of the finished material is ≦0.05%. The water resistance requirements of the finished granules are 10 minutes of hot water without collapse, cracks less than 1.5%, and more than 120 minutes of normal temperature water. In addition, the expansion granulation mechanism 6 is also equipped with a cooling dust removal wind net dominated by Shaklon, and finally enters the environmental protection system. The cooled finished granular material is sent to the post-granulation elevator through the post-cooling conveying scraper, and some sampling materials or finished materials can be put in through the finished product manual feeding port set on the post-granulation elevator. The cooled granular material is lifted and transported to the high square screen 2 for screening, and the screened material is discharged from the screened material outlet and transported to the return bin for standby use. The qualified finished granular material is transported to the granulation finished product bin 66 through the finished product tee, where the particles in the B01 finished product bin in the granulation finished product bin 66 are screened again by the finished product screen 1, and the screened material outlet discharges the screened material and enters the return bin for standby use. The qualified finished material enters the finished product buffer hopper, and after the powder removal treatment of the powder absorber 1, it enters the packaging buffer hopper 1, and is packaged and output to the belt conveyor 1 according to the set packaging weight. The packaging dust removal wind net is responsible for settling and collecting the dust processed by the powder absorber 1, and outputs the settled material outlet to the return bin for standby use.

[0105] The pellet feed in the B02 bin in the finished pelletizing bin 66 is transported by the short-cut material conveying scraper through the V-shaped gate, and is lifted and transported to the permanent magnetic drum by the short-cut material elevator 95 for iron removal. The processed pellet feed enters the bin to be crushed, and the finished pellet material is crushed by the crusher in the crushing and screening mechanism 7. The crushed pellet feed can enter the multi-layer screen in the crushing and screening mechanism 7 for screening, and the corresponding screened feed is sent to different processing mechanisms 9 according to the particle size by the post-crushing tee for the next step of processing.

[0106] In summary, the feed processing equipment of the present application can effectively ensure the mixing effect of the ingredients during feed production and the quality of the final product through multiple crushing and batch mixing, so that the macromolecular substances such as protein and starch in the feed are easy to digest and absorb. At the same time, by crushing the expanded granular feed into feeds of different particle sizes, it can be eaten by animals at different growth stages to meet the growth needs of animals at different periods. In addition, due to the appropriate hardness, it is easy for animals to chew or swallow, ensuring the desire to eat, thereby indirectly improving the utilization efficiency of the feed, and effectively solving the problem of incompletely digested feed residues deposited on the bottom of the water, causing water quality deterioration and increasing breeding risks.

[0107] Referring to Figures 2 and 4, in one embodiment, the first mixing mechanism 2 includes a first mixer 21 and a second mixer 22. The first mixer 21 is arranged downstream of the pretreatment mechanism 8, and is used to mix the first raw material in the crushed raw material with the first material in the first additive to generate a premix. The second mixer 22 is arranged downstream of the first mixer 21, and is used to mix the second raw material in the crushed raw material with the second material in the first additive and the premix to generate a first mixture. Among them, the crushed raw material includes the first raw material and the second raw material, the first additive includes the first material and the second material, and the first material is cuttlefish paste. The above-mentioned adding method can make the raw material better mixed with the cuttlefish paste, overcome the problem of poor mixing uniformity of the cuttlefish paste and aquatic feed due to the viscosity of the cuttlefish paste paste, and thus ensure the production quality.

[0108] Specifically, the first raw material is first sent to the cuttlefish paste to be added bin 23, and then the cuttlefish paste adding and batching scale 24 is used for batching. The cuttlefish paste adding and batching scale 24 sets the batching amount to 2000kg at a time, and the weighed first raw material is placed in the first mixer 21 for standby. Then, the cuttlefish paste is added through the cuttlefish paste adding port, and the added amount is ensured to be 2%-12% per ton of material. The first mixer 21 mixes the first raw material and the cuttlefish paste, and the mixing time is 90-180s. The mixed first mixture is sent to the cuttlefish paste tee, and is sent to the cuttlefish paste adding bin 25 for standby according to the system settings. Among them, in order to avoid the airflow of the first mixer 21 discharging material affecting the accuracy of the cuttlefish paste adding and batching scale 24, a cuttlefish paste balancing airflow wind net is set between the cuttlefish paste adding and batching scale 24 and the first mixing mechanism 2.

[0109] After the second raw material is sieved by the cleaning screen, it passes through the permanent magnetic cylinder and enters the dust removal buffer hopper after the primary crushing. The first crushing distributor transports the second raw material to the primary crushing bin group 26 for standby use. After the first mixed material in the cuttlefish paste adding bin 25 is weighed by the primary batching scale, it is mixed with the second raw material in the primary crushing bin group 26 by the second mixer 22. Other materials required by the formula during mixing can be weighed by the primary batching small material scale 27, and after passing through the primary batching small material pneumatic damper, they are placed in the second mixer 22 through the primary batching small material tee for mixing. Among them, in order to prevent the airflow of the second mixer 22 from affecting the accuracy of the cuttlefish paste adding batching scale 24, a primary batching balanced airflow wind net is set between the second mixer 22 and the primary batching scale.

[0110] Referring to FIG. 2 , in one embodiment, the feed processing equipment further includes a secondary crushing mechanism 10, which is arranged between the first mixing mechanism 2 and the ultrafine crushing mechanism 3, and is used to perform secondary crushing on the first mixed material whose particle size does not meet the requirements. It can be understood that when the first mixed material is ultrafinely crushed, it is first determined whether the particle size of the first mixed material meets the requirements. If the particle size of the first mixed material meets the requirements, ultrafine crushing is performed. If the particle size of the first mixed material does not meet the requirements, the first mixed material is firstly crushed twice, and then ultrafine crushing is performed. This process can ensure the quality of the finished product of the second mixed material that is subsequently mixed with the second additive to generate the second mixed material.

[0111] Specifically, if the particle size of the first mixed material meets the requirements, the first mixed material is ultra-finely pulverized by the ultra-fine pulverizing mechanism 3. If the particle size of the first mixed material does not meet the requirements, it is subjected to dust removal and iron removal operations and then sent to the secondary pulverizing mechanism 10 for pulverization treatment to ensure that the pulverized first mixed material can pass through a 40-mesh standard sieve.

[0112] In one embodiment, the feed processing equipment further comprises a pre-processing mechanism 8, which is arranged upstream of the first crushing mechanism 1 and is used to screen and remove impurities from unprocessed raw materials to ensure the cleanliness of the raw materials.

[0113] Specifically, a dust removal system is configured at the raw material feeding port. When the raw materials are fed through the raw material feeding port, they are dusted by the dust removal system. The fed raw materials are transported to the raw material elevator and enter the raw material cleaning screen for screening. The screened powder enters the raw material return powder bin, and the remaining materials flow through the permanent magnetic cylinder for iron removal and then enter the raw material distributor through the raw material buffer dust removal hopper, and are fed into the primary crushing waiting bin group for standby use according to the setting requirements.

[0114] Referring to FIG. 2 and FIG. 7, in one embodiment, the processing mechanism 9 includes a first processing mechanism and a second processing mechanism. It can be understood that when feeds of different particle sizes are sent to different processing mechanisms 9 for processing, the feed with the first particle size can be crushed again together with the pellet feed. The feed with the second particle size is screened again, and the first qualified finished product screened out is sent to the first processing mechanism 9 for processing. The feed with the third particle size is screened again, and the second qualified finished product screened out is sent to the second processing mechanism 9 for processing. Among them, the first particle size is larger than the second particle size, and the second particle size is larger than the third particle size.

[0115] In the embodiment of the present application, the processing mechanism 9 includes a large miscellaneous bin 91, a 0.5mm particle size bin 92, a 0.3mm particle size bin 93 and a fine powder bin 94. The corresponding sieved materials are respectively sent to the large miscellaneous bin 91, the 0.5mm particle size bin 92, the 0.3mm particle size bin 93 and the fine powder bin 94 by the three-way after crushing according to the size. Among them, the first processing mechanism 9 and the second processing mechanism 9 are the 0.5mm particle size bin 92 and the 0.3mm particle size bin 93 respectively. The materials in the large miscellaneous bin 91 need to be returned to the short-cut material elevator 95 for re-crushing. The powder in the fine powder bin 94 is output to the return bin or packaged and output. The feed in the 0.5mm particle size bin 92 is screened by the finished product screen 2, and the screened material is output to the return bin from the screened material outlet. The qualified finished feed enters the 0.5mm finished product buffer hopper, and enters the packaging buffer hopper 2 after being processed by the powder absorber 2. According to the weighing requirements, it is weighed by the packaging scale 2 and output by the belt conveyor 2 96. The feed in the 0.3mm particle size bin 93 enters the finished product screen for screening, and the screened material is discharged from the screened material outlet to the return bin for standby use. The remaining qualified feed is output and packaged from the 0.3mm packaging port 97.

[0116] In addition, the return materials generated in the above-mentioned production processes enter the return material bin group 98 or are output to the return material tee, the powder material generated enters the return material and powder bin 99, and the remaining feed enters the return material distributor and is transported to D10 and D11 at the output port of the primary coarse crushing bin group to be added as needed and participate in the production cycle of each process again.

[0117] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0118] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A feed processing method, characterized in that: include: The raw material is crushed and mixed with the first additive to generate a first mixed material; Performing ultrafine grinding on the first mixed material; Mixing the ultrafinely crushed first mixed material with the second additive to generate a second mixed material; pulverizing the second mixed material; Expanding and granulating the crushed second mixed material to produce pellet feed; Crushing pellet feed; The crushed pellet feed is screened to obtain feeds with different particle sizes.

2. The feed processing method according to claim 1, characterized in that: The method of crushing the raw material and mixing it with the additive to generate the first mixed material includes: dividing the crushed raw material into a first raw material and a second raw material; Mixing the first raw material with the first material to generate a premix; Mixing the second raw material with the second material and the premix to generate a first mixed material; The first additive includes a first material and a second material.

3. The feed processing method according to claim 2, characterized in that: The first material is squid paste.

4. The feed processing method according to claim 1, characterized in that: The ultrafine grinding of the first mixed material comprises: Determining whether the particle size of the first mixture meets the requirements; If the particle size of the first mixed material meets the requirements, ultrafine grinding is performed; If the particle size of the first mixed material does not meet the requirements, the first mixed material is firstly subjected to secondary pulverization and then to ultrafine pulverization.

5. The feed processing method according to claim 1, characterized in that: The feeds of different particle sizes are sent to different processing institutions for processing, including: The feed with the first particle size is crushed again together with the pellet feed; The feed with the second particle size is screened again, and the screened first qualified finished product is sent to the first processing mechanism for processing; The feed with the third particle size is screened again, and the screened second qualified finished product is sent to the second processing mechanism for processing; The first particle size is larger than the second particle size, and the second particle size is larger than the third particle size.

6. The feed processing method according to claim 1, characterized in that: The feed processing method further comprises: screening and removing impurities from the raw materials before crushing.

7. A feed processing equipment, characterized in that: include: A first crushing mechanism, used for crushing the raw material; A first mixing mechanism, disposed downstream of the first pulverizing mechanism, for mixing the pulverized raw material with a first additive to generate a first mixed material; An ultrafine grinding mechanism, arranged downstream of the first mixing mechanism, for ultrafine grinding the first mixed material; A second mixing mechanism is arranged downstream of the ultrafine grinding mechanism and is used to mix the ultrafinely ground first mixed material with the second additive to generate a second mixed material; a second crushing mechanism, disposed downstream of the second mixing mechanism, for crushing the second mixed material; An expansion granulation mechanism, arranged downstream of the second pulverizing mechanism, for expanding the pulverized second mixed material to form granular feed; The crushing and screening mechanism is arranged downstream of the expansion granulation mechanism, and is used for crushing the pellet feed and screening the crushed pellet feed into feeds of different particle sizes.

8. The feed processing equipment according to claim 7, characterized in that: The first mixing mechanism comprises a first mixer and a second mixer, wherein the first mixer is arranged downstream of the pretreatment mechanism and is used to mix the first raw material in the crushed raw material with the first material in the first additive to generate a premix; The second mixer is arranged downstream of the first mixer, and is used to mix the second raw material in the crushed raw material with the second material and the premix in the first additive to generate the first mixed material.

9. The feed processing equipment according to claim 7, characterized in that: The feed processing equipment further comprises a secondary pulverizing mechanism, which is arranged between the first mixing mechanism and the ultrafine pulverizing mechanism and is used for secondary pulverizing the first mixed material whose particle size does not meet the requirements.

10. The feed processing equipment according to claim 7, characterized in that: The feed processing equipment further comprises a pre-processing mechanism, which is arranged upstream of the first pulverizing mechanism and is used for screening and removing impurities from unprocessed raw materials.

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