Method and device for processing mulberry leaf chicken feed

Abstract

The application discloses a mulberry leaf chicken feed processing method, which comprises the following steps: fresh mulberry leaf processing, dry mulberry leaf processing, mixing processing, hot puffing extrusion, oil spraying granulation, and packaging. The application also discloses a mulberry leaf chicken feed processing device, which comprises a mixer, a puffing extruder, an oil sprayer, and a cutting device. The mixer is used for mixing mulberry leaf water, mulberry leaf residue, mulberry leaf fermentation powder and conventional feed raw materials uniformly. The feeding end of the puffing extruder is connected with the discharging end of the mixer, so that the wet soft feed is directly discharged into the puffing extruder after being stirred uniformly by the mixer, and then the wet soft feed is extruded into feed dry strips. The oil sprayer is used for spraying oil on the surface of the feed. The application adopts the method of mixing and adding fresh mulberry leaves and dry mulberry leaves, and adopts the puffing processing mode of external dryness and internal wetness, so that the loss of nutrients is avoided, the nutrients which are easy to be destroyed by the external environment are protected by attaching oil on the surface of the feed, the nutrition of the feed is effectively improved, and the absorption of the nutrients of the mulberry leaves by the chickens is promoted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of feed processing, in particular to a mulberry leaf chicken feed processing method and processing device. BACKGROUND

[0002] As a natural feed, mulberry leaves contain rich nutrients such as protein, cellulose, vitamins, and minerals, which play an important role in the growth and health maintenance of animals. Especially when raising chickens, adding mulberry leaves to chicken feed can effectively improve the immunity of chickens and enhance their disease resistance, and their growth rate is faster. Therefore, in order to make the chickens develop faster and reduce the incidence of disease during growth and development, a small amount of mulberry leaves is usually added to the conventional feed (usually refers to the feed mixed by soybean meal, corn meal, peanut meal, wheat bran, rice bran, calcium powder and edible salt) so that the chickens can absorb part of the nutrients of the mulberry leaves.

[0003] Currently, adding mulberry leaves to conventional feed usually adopts the method of adding dry mulberry leaves, that is, drying or drying dry mulberry leaves into mulberry leaf powder, and then adding the mulberry leaf powder to the raw materials of the conventional feed and mixing with water, so that the synthesized feed is extruded into strips, dried and then cut into particles to form dry and hard feed particles.

[0004] However, since the added mulberry leaves are in the form of powder made from dry mulberry leaves, part of the vitamins has been destroyed, resulting in a low increase in the nutritional value of the feed. If fresh mulberry leaves are directly added to the conventional feed raw materials for mixing, since the fresh mulberry leaves cannot be protected, part of the vitamins contained in the feed will still be destroyed during the storage period, which results in the chickens being unable to absorb more nutrients, and part of the fat-soluble nutrients (fat-soluble vitamins, fat-soluble cellulose, etc.) contained in the mulberry leaves also cannot be absorbed by the chickens.

[0005] Therefore, the existing chicken feed processing directly uses dry mulberry leaf powder to mix into the conventional feed, which has limited effect on the nutrition of the feed, and cannot promote the absorption of the nutrients of the mulberry leaves by the chickens, so the effect on the growth and development of the chickens is general. SUMMARY

[0006] The present application aims to provide a mulberry leaf chicken feed processing method and processing device to solve the technical problem that the prior art directly adds dry mulberry leaves to conventional feed, which has limited effect on the nutrition of the feed and cannot promote the absorption of the nutrients of the mulberry leaves by the chickens.

[0007] To solve the above technical problems, the present application specifically provides the following technical solutions:

[0008] A mulberry leaf chicken feed processing method, comprising the following steps:

[0009] Fresh mulberry leaf processing; a certain amount of fresh mulberry leaves is washed and put into a press to squeeze juice, and the mulberry leaf juice and mulberry leaf residue are collected, and the collected mulberry leaf juice is mixed with water to prepare mulberry leaf water;

[0010] Dry mulberry leaf processing; a certain amount of dry mulberry leaves is put into a fermentation tank and fermented by adding corresponding strains, and after fermentation, drying is performed, and then the dried fermented mulberry leaves are put into a pulverizer to be crushed to prepare mulberry leaf fermentation powder;

[0011] Mixing processing; the mulberry leaf fermentation powder and conventional feed raw materials are stirred and mixed by a mixing machine to obtain a powdery dry material; the mulberry leaf water and mulberry leaf residue are sequentially added into the mixing machine for mixing and stirring to obtain a wet soft feed;

[0012] Hot puffed extrusion; the wet soft feed in the mixing machine is discharged into a puffed extruder for extrusion, so that the surface of the wet soft feed is rapidly dried and puffed, and a feed dry strip is produced;

[0013] Oil spraying granulation; the feed dry strip produced by the puffed extruder is conveyed into an oil spraying machine to complete the surface oil coating of the feed, and when it is removed from the oil spraying machine, it is cut into particles according to the particle size setting;

[0014] Packaging; the mulberry feed particles are bagged and sealed by vacuumizing or filling protective gas;

[0015] Among them, the mulberry leaf residue and mulberry leaf water of fresh mulberry leaves are added to the conventional feed raw materials to reduce the water content ratio of the feed and improve the vitamin content in the feed; and the dry mulberry leaf powder after fermentation is added to the conventional feed raw materials, so that the nutritional substances are decomposed into small molecular products that are easy to absorb;

[0016] After the wet soft feed is puffed into a feed dry strip by the puffed extruder, the surface density of the feed dry strip is reduced, so that the feed dry strip is easy to absorb the oil sprayed by the oil spraying machine; the oil is coated on the surface of the puffed feed dry strip to maintain the moisture inside the feed dry strip and can dissolve the fat-soluble vitamins and proteins to promote absorption.

[0017] As a preferred scheme of the present application, the mass ratio of fresh mulberry leaves and dry mulberry leaves to conventional feed raw materials is: fresh mulberry leaves 6% to 8%, dry mulberry leaves 2% to 4%, and conventional feed raw materials 88% to 92%;

[0018] The mass ratio of conventional feed raw materials is: soybean meal 5% to 6%, corn meal 65% to 75%, peanut meal 5% to 7%, wheat bran 4.5% to 6%, rice bran 8% to 10%, calcium powder 2.3% to 5.5%, and edible salt 0.2% to 0.5%;

[0019] Among them, the calcium powder is one or more of fish bones, eggshells, and shrimp and crab ground into powder.

[0020] As a preferred scheme of the present application, in the mixing process, the interval between the addition of the mulberry leaf water and the mulberry leaf residue is greater than 30 minutes, and the mulberry leaf water is added first, so that the mulberry leaf water can mix the powdery dry material into soft wet material, and then the mulberry leaf residue is added.

[0021] As a preferred scheme of the present application, in the hot extrusion process, the extrusion speed and the puffing temperature are controlled, so that the surface of the dry feed strip is puffed to promote the absorption of starch and protein, and the core of the dry feed strip is kept with a certain amount of moisture to retain part of the nutrients which are easy to be decomposed by heat.

[0022] As a preferred scheme of the present application, in the oil spraying granulation process, the oil spraying flow of the oil sprayer is adjusted according to the production speed of the dry feed strip, so that the amount of oil covering the surface of the dry feed is 2% to 4% of the mass of the dry feed.

[0023] To solve the above technical problems, the present application further provides the following technical scheme:

[0024] A mulberry leaf chicken feed processing device applied to the above mulberry leaf chicken feed processing method, comprising:

[0025] A mixing machine for mixing the mulberry leaf water, the mulberry leaf residue, the mulberry leaf fermentation powder and the conventional feed raw material uniformly;

[0026] A puffing extruder, the feeding end of which is connected with the discharging end of the mixing machine, so that the wet soft feed is directly discharged into the puffing extruder after being stirred uniformly by the mixing machine to be extruded into a dry feed strip;

[0027] An oil sprayer, the inlet end of which is connected with the outlet end of the puffing extruder, so that the extruded dry feed strip is sent into the oil sprayer to be sprayed with oil;

[0028] A cutting device arranged at the outlet end of the oil sprayer to cut the dry feed strip sprayed with oil into feed particles at the outlet end of the oil sprayer;

[0029] The puffing extruder adjusts the extrusion speed and the puffing temperature, so that the surface of the wet soft feed is puffed to be hard, and the core of the wet soft feed is not puffed to protect the wet soft feed containing nutrients which are easy to be decomposed by heat in the core;

[0030] The oil sprayer is internally provided with a ring-shaped nozzle, which sprays oil in the form of oil mist uniformly around the surface of the dry feed strip conveyed along the axis of the ring-shaped nozzle, so that the surface of the dry feed strip is puffed into a porous structure to rapidly absorb oil and form an oil layer;

[0031] The oil spray flow of the annular spray head is adjusted according to the conveying speed of the feed dry strip, so that the oil adhesion amount of the feed dry strip meets the set range.

[0032] As a preferred scheme of the present application, the oil spraying machine comprises a machine body, a puffing conveying channel coaxial with the outlet end of the puffing extruder is arranged in the machine body, an annular groove is arranged in the puffing conveying channel, and the annular spray head is arranged in the annular groove;

[0033] An oil tank and an oil pump connected with the oil tank through a pipeline are arranged on the machine body, an oil inlet pipe mounted on the annular spray head is arranged on the machine body, and the oil inlet pipe is connected with the oil pump through a pipeline;

[0034] The annular spray head comprises an annular sleeve, a plurality of oil spray holes are arranged on the annular cover in the inner ring side of the annular sleeve;

[0035] An annular cavity is formed between the annular cover and the annular sleeve, the oil inlet pipe is arranged on the annular sleeve and communicates with the annular cavity;

[0036] Among them, a plurality of the oil spray holes are staggered arranged along the axial direction of the annular cover.

[0037] As a preferred scheme of the present application, the annular cover is sealingly arranged in rotation on the annular sleeve, a plurality of blades are arranged on the outer ring side wall of the annular cover, and the blades are arranged at the gaps formed by the plurality of oil spray holes;

[0038] Among them, the oil inlet pipe is mounted along the tangential direction of the annular sleeve, and the oil inlet direction of the oil inlet pipe is opposite to the inclination direction of the blades.

[0039] As a preferred scheme of the present application, an oil return pipe mounted on the annular spray head is arranged on the machine body, and the oil return pipe is connected with the oil tank through a pipeline;

[0040] Among them, the oil return pipe is arranged on the annular sleeve and mounted along the tangential direction of the annular sleeve, and the oil return pipe is arranged in parallel and symmetrically with the oil inlet pipe.

[0041] As a preferred scheme of the present application, the puffing extruder comprises a screw extruder and a hot puffing extrusion head, a material guide pipe is arranged between the screw extruder and the hot puffing extrusion head, and an extrusion speed sensor for monitoring the extrusion speed of the wet soft feed is arranged on the material guide pipe;

[0042] The outlet end of the hot puffing extrusion head is provided with a straight guide pipe, the straight guide pipe is connected and mounted with the puffing conveying channel of the machine body, and a conveying speed sensor for monitoring the conveying speed of the feed dry strip is arranged on the straight guide pipe;

[0043] The cutting device comprises a fixed frame arranged on the machine body, two hollow rollers controlled by a motor are arranged on the fixed frame, and the surface of the hollow rollers is provided with hollow cutters in communication with the hollow rollers in the axial direction;

[0044] Overflow holes are arranged on both sides of the hollow cutters, and a fluff layer is arranged on both sides of the hollow cutters, and an oil supply pipe is arranged on the shaft end of the hollow roller and fixed on the fixed frame, and the oil supply pipe is connected with the oil pump through a pipeline;

[0045] A temperature sensor for detecting the puffing temperature is arranged on the puffing extrusion head, so as to adjust the extrusion speed of the wet soft feed according to the detection result of the extrusion speed sensor, so that the puffing degree of the wet soft feed meets the surface puffing requirement;

[0046] A flow sensor for detecting the oil conveying flow is arranged on the oil inlet pipe, so as to adjust the oil conveying flow of the pump according to the detection result of the conveying speed sensor, so that the surface oil amount of the feed dry strip meets the requirement;

[0047] When the fluff layer cuts the feed dry strip by the hollow cutter, the fluff layer contacts and rubs the end surface of the feed dry strip and the feed particles, so as to complete the oil supplement of the end part of the feed particles.

[0048] Compared with the prior art, the present application has the following beneficial effects:

[0049] By adopting the method of adding fresh mulberry leaves and dry mulberry leaves, and by adopting the puffing processing mode of external dryness and internal wetness, the present application avoids the loss of nutrients, and provides protection for nutrients which are easily damaged by the external environment by oiling the surface of the feed, effectively improves the nutrition of the feed, and promotes the absorption of mulberry leaf nutrients by chickens. BRIEF DESCRIPTION OF DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0051] Figure 1 The structure schematic diagram of the processing device provided by the embodiment of the present application is shown in the figure;

[0052] Figure 2 The part structure schematic diagram of the oil injection machine of the processing device provided by the embodiment of the present application is shown in the figure;

[0053] Figure 3The annular nozzle part structure of the processing device provided by the embodiment of the present application is shown in the schematic view.

[0054] Figure 4 The cutting device part structure of the processing device provided by the embodiment of the present application.

[0055] The reference numerals in the drawings represent the following respectively:

[0056] 1-mixer; 2-puffed extruder; 3-oil sprayer; 4-cutting device; 5-annular nozzle; 6-oil inlet pipe; 7-oil return pipe;

[0057] 21-screw extruder; 22-hot puffed extrusion head; 23-lead pipe; 24-extrusion speed sensor; 25-straight lead pipe; 26-conveying speed sensor; 27-temperature sensor; 31-machine body; 32-puffed conveying channel; 33-annular groove; 34-oil tank; 35-oil pump; 41-fixing frame; 42-hollow roller; 43-hollow cutter; 44-overflow hole; 45-fleece layer; 46-oil supply pipe; 51-annular sleeve; 52-annular cover; 53-oil injection hole; 54-annular cavity; 61-flow sensor;

[0058] 521-blade. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0060] The present application provides a mulberry leaf chicken feed processing method, comprising the following steps:

[0061] Fresh mulberry leaf processing; a certain amount of fresh mulberry leaves are washed and then put into a press to extract juice, and the mulberry leaf juice and mulberry leaf residue are collected, and the collected mulberry leaf juice is mixed with water to prepare mulberry leaf water;

[0062] Dry mulberry leaf processing; a certain amount of dry mulberry leaves are put into a fermentation tank and fermented by adding corresponding strains, dried after fermentation, and then put into a pulverizer to be pulverized into mulberry leaf fermentation powder;

[0063] Mixing processing; the mulberry leaf fermentation powder and conventional feed raw materials (soybean meal, corn meal, peanut meal, wheat bran, rice bran, calcium powder and edible salt) are stirred and mixed by a mixer to obtain a powdery dry material; the mulberry leaf water and mulberry leaf residue are sequentially added into the mixer for mixing and stirring to obtain a wet soft feed;

[0064] Thermal expansion extrusion; the wet soft feed in the mixing machine is discharged to the expansion extruder for extrusion, so that the surface of the wet soft feed is quickly dried and expanded, and feed dry strip is produced;

[0065] Oil spraying granulation; the feed dry strip produced by the expansion extruder is transported to the oil sprayer to complete the surface oiling of the feed, and is cut off according to the particle size when it is removed from the oil sprayer;

[0066] Packaging; the mulberry leaf feed particles are bagged and sealed by vacuum or gas filling;

[0067] Among them, the mulberry leaf residue and the mulberry leaf water of fresh mulberry leaves are added to the conventional feed raw materials to reduce the water content of the feed and increase the vitamin content of the feed; and the dry mulberry leaf powder after fermentation is added to the conventional feed raw materials, so that the nutritional substances are decomposed into small molecular products that are easy to absorb;

[0068] After the wet soft feed is expanded into feed dry strip by the expansion extruder, the surface density of the feed dry strip is reduced, so that the feed dry strip is easy to absorb the oil sprayed by the oil sprayer; the oil is coated on the surface of the expanded feed dry strip to maintain the moisture inside the feed dry strip and can dissolve the fat-soluble vitamins and proteins to promote absorption.

[0069] In this method, by adding fermented mulberry leaf powder and mulberry leaf residue of fresh mulberry leaves to the conventional feed raw materials, and mixing and stirring with the mulberry leaf water of fresh mulberry leaves, chicken feed rich in multiple vitamins is formed; and by means of expansion processing, the surface of the feed is expanded to promote the absorption of starch by chickens; and by attaching oil to the surface of the feed, the energy of the feed is improved, the absorption of vitamins by chickens is promoted, and the vitamins inside the feed can be protected from damage by external environmental interference (light, oxygen, acid and alkali, moisture, etc.), so that chickens can better absorb the nutritional substances in mulberry leaves.

[0070] Compared with the conventional direct addition of dry mulberry leaf powder processing, the feed with fresh mulberry leaves processed by this method has more complete nutritional substances and is easier to absorb with the help of oil, which can make broilers grow rapidly.

[0071] Among them, the mass ratio of fresh mulberry leaves and dry mulberry leaves to conventional feed raw materials is: fresh mulberry leaves 6% to 8%, dry mulberry leaves 2% to 4%, and conventional feed raw materials 88% to 92%;

[0072] The mass ratio of conventional feed raw materials is: soybean meal 5% to 6%, corn flour 65% to 75%, peanut meal 5% to 7%, wheat bran 4.5% to 6%, rice bran 8% to 10%, calcium powder 2.3% to 5.5%, and edible salt 0.2% to 0.5%;

[0073] Among them, the calcium powder is made of one or more of fish bones, eggshells, and shrimp and crab shells.

[0074] Since the feed raw materials are mixed with the mulberry leaf residue and the mulberry leaf water of fresh mulberry leaves and the dry mulberry leaves, and then need to be expanded, part of the nutrients of the fresh mulberry leaves will be lost, therefore, the proportion of the fresh mulberry leaves needs to be greater than that of the dry mulberry leaves.

[0075] The calcium powder is ground from fish bones, eggshells, shrimps, crabs and the like, which can increase the taste (palatability) of the feed and make the chickens more easily accept the feed.

[0076] In the mixing step, the interval between the addition of the mulberry leaf water and the mulberry leaf residue is greater than 30 minutes, and the mulberry leaf water is added first, so that the mulberry leaf water can mix the powdery dry materials into soft wet materials, and then the mulberry leaf residue is mixed in.

[0077] The conventional feed raw materials are first mixed evenly by the mulberry leaf water to form soft wet materials, and then the mulberry leaf residue is mixed in the soft wet materials, which is beneficial to the uniform mixing of the mulberry leaf residue and avoids the agglomeration of the mulberry leaf residue in the dry conventional feed raw materials, so that the uniform mixing is difficult to achieve.

[0078] In the hot expansion and extrusion step, the extrusion speed and the expansion temperature are controlled, so that the surface of the produced feed dry strip is expanded, the absorption of starch and protein is promoted, and the core of the feed dry strip retains a certain amount of moisture to retain part of the nutrients that are easily decomposed by heat.

[0079] Only the surface layer of the feed dry strip is expanded at high temperature, so that the feed particles become hard and the absorption of starch and protein by the chickens is promoted, while the core of the feed still retains moisture, so that the easily decomposed nutrients such as vitamins are preserved, and the nutrition of the feed is improved.

[0080] In the oil spraying granulation step, the oil spraying flow of the oil sprayer is adjusted according to the production speed of the feed dry strip, so that the amount of oil covering the surface of the feed is 2% to 4% of the mass of the feed.

[0081] By controlling the amount of oil spraying, the oil content of the feed is controlled within a preset range, so that the oil content is not too high or too low.

[0082] As shown in Figure 1 and Figure 2 , a mulberry chicken feed processing device applied to the above-mentioned mulberry chicken feed processing method is provided, which comprises:

[0083] A mixing machine 1 is used to mix the mulberry leaf water, the mulberry leaf residue, the mulberry leaf fermentation powder and the conventional feed raw materials evenly;

[0084] An expansion extruder 2 is connected to the discharge end of the mixing machine 1, so that the wet soft feed is directly discharged into the expansion extruder 2 after being stirred evenly by the mixing machine 1, and then is extruded into a feed dry strip;

[0085] The oil injection machine 3 is connected with the outlet end of the bulking extruder 2 to send the extruded feed stick into the oil injection machine 3 for oil injection;

[0086] The cutter 4 is arranged at the outlet end of the oil injection machine 3 to cut the feed stick into feed pellets at the outlet end of the oil injection machine 3 after the oil injection is completed.

[0087] The bulking extruder 2 is adjusted in the extrusion speed and the bulking temperature to make the surface of the wet soft feed be bulking hardened, and the core of the wet soft feed not be bulking, so as to protect the wet soft feed containing the heat decomposable nutrients in the core.

[0088] The oil injection machine 3 is internally provided with the annular nozzle 5, which sprays the oil in the form of oil mist on the surface of the feed stick conveyed along the axis of the annular nozzle 5 to make the surface of the feed stick bulking porous structure rapidly absorb the oil and form the oil layer.

[0089] The oil mist flow of the annular nozzle 5 is adjusted according to the conveying speed of the feed stick to make the oil content of the feed stick meet the set range.

[0090] The processing device of the embodiment mainly uses the bulking extruder 2 to extrude the wet soft feed mixed by the mixer 1, and controls the bulking temperature and the extrusion speed to make the surface of the wet soft feed be bulking, and the core of the wet soft feed still be wet soft, so as to protect the heat decomposable nutrients (such as various vitamins).

[0091] Then the oil injection machine 3 sprays the oil to the feed stick extruded by the bulking extruder 2 to make the surface of the feed stick adsorb the oil, which can protect the internal moisture of the feed from evaporating, so that the nutrients such as vitamins will not be lost in a short time, and the total energy of the feed can be improved, the absorption of the fat-soluble vitamins and the protein can be promoted, and the starch in the feed is gelatinized after bulking, which is easy to be absorbed by the digesting chicken.

[0092] The annular nozzle 5 sprays the oil to the feed stick to make the oil on the surface of the feed stick be evenly covered, so as to avoid the oil content on the surface of the feed stick not meeting the standard and the nutrients in the core of the feed stick being rapidly oxidized and lost.

[0093] The mulberry leaf water, the mulberry leaf residue, the mulberry leaf fermentation powder and the conventional feed raw materials in the mixer 1 are added in the order of the conventional feed raw materials, the mulberry leaf fermentation powder, the mulberry leaf water and the mulberry leaf residue.

[0094] After the feed stick is cut, the moisture in the core of the section is rapidly evaporated and lost, so that the adsorption performance is increased, the oil on the bulking section is absorbed after flowing out, so that the two ends of the feed pellet are also sealed by the oil, and the oil on the feed pellet is fully covered.

[0095] In the process of mulberry leaf chicken feed processing, the oil sprayer 3 is used to attach oil on the surface of the feed, which can protect the internal nutrients from being easily oxidized and lost, improve the ability of the feed, and promote the absorption of fat-soluble nutrients by chickens. Therefore, the following preferred embodiments are provided to make the oil sprayer 3 cooperate with the annular nozzle 5 to uniformly spray oil on the surface of the feed dry strip.

[0096] As shown in Figure 1 and Figure 2 , the oil sprayer 3 includes a body 31, a puffing feed channel 32 coaxial with the outlet end of the puffing extruder 2 is arranged in the body 31, an annular groove 33 is arranged in the puffing feed channel 32, and the annular nozzle 5 is arranged in the annular groove 33;

[0097] An oil tank 34 and an oil pump 35 connected to the oil tank by a pipeline are arranged on the body 31, and an oil inlet pipe 6 mounted on the annular nozzle 5 is arranged on the body 31, and the oil inlet pipe 6 is connected to the oil pump 35 by a pipeline;

[0098] The annular nozzle 5 includes an annular sleeve 51, an annular cover 52 is arranged on the inner ring side of the annular sleeve 51, and a plurality of oil injection holes 53 are arranged through the annular cover 52;

[0099] An annular cavity 54 is formed between the annular cover 52 and the annular sleeve 51, the oil inlet pipe 6 is arranged on the annular sleeve 51 and communicates with the annular cavity 54;

[0100] Among them, a plurality of oil injection holes 53 are staggered along the axial direction of the annular cover 52.

[0101] The puffing extruder 2 produces a feed dry strip, which is transported along the puffing feed channel 32 in the body 31, so that the feed dry strip passes through the annular nozzle 5 arranged in the puffing feed channel 32 along its axis.

[0102] The oil pump 35 pumps the oil in the oil tank 34 into the annular cavity 54 formed by the annular sleeve 51 and the annular cover 52 through the pipeline and the oil inlet pipe 6, so that the pressure in the annular cavity 54 increases, and the oil is sprayed from the oil injection holes 53 to the surface of the feed dry strip.

[0103] Since the plurality of oil injection holes 53 are staggered along the axial direction, the gap caused by the oil injection of the two oil injection holes 53 in this circle is supplemented by the oil injection of the oil injection hole 53 located between the two oil injection holes 53 in the previous circle during the transportation of the feed dry strip, so as to ensure the completeness of the oil attachment of the feed dry strip.

[0104] Further, as shown in Figure 2 and Figure 3 , the annular cover 52 is sealingly arranged on the annular sleeve 51, and a plurality of blades 521 are arranged on the outer ring side wall of the annular cover 52, and the blades 521 are arranged at the gaps formed by the plurality of oil injection holes 53;

[0105] The oil inlet pipe 6 is installed tangentially to the annular sleeve 51, and the oil inlet direction of the oil inlet pipe 6 is opposite to the tilt direction of the blade 521.

[0106] The oil pump 35 pumps the grease into the annular cavity 54 through the oil inlet pipe 6. Since the pumped grease has kinetic energy, it pushes the blades 521 to rotate the annular cover 52, thereby causing the multiple oil spray holes 53 to rotate and spray oil, improving the uniformity of oil coating on the dry feed strips.

[0107] However, due to the limited diameter of the oil injection hole 53, the oil flow rate is also limited. Therefore, the flow rate of grease entering the annular cavity 54 through the oil inlet pipe 6 is significantly restricted, resulting in a slower rotation speed of the annular cover 52. Consequently, the adaptive range of the rotational spray according to the feed dry strip conveying speed is small, making it impossible to uniformly spray oil onto feed dry strips with faster conveying speeds. Therefore, the following embodiment is provided to further improve the adaptive rotational speed performance of the annular cover 52.

[0108] like Figure 3 As shown, an oil return pipe 7 is installed on the annular nozzle 5 on the machine body 31, and the oil return pipe 7 is connected to the oil tank 34 through a pipeline.

[0109] The return oil pipe 7 is installed on the annular sleeve 51 and is installed tangentially to the annular sleeve 51. The return oil pipe 7 is parallel to and symmetrically arranged with the inlet oil pipe 6.

[0110] By setting a return oil pipe 7 on the annular sleeve 51, the grease can circulate in the oil tank 34 and the annular cavity 54. By increasing the pumping speed of the oil pump 35, the circulation speed can be accelerated, thereby increasing the speed at which the grease drives the blade 521 to rotate, that is, increasing the rotation speed of the annular cover 52, thereby increasing the rotation speed of the oil injection hole 53, effectively improving the speed control of the annular cover 52.

[0111] Furthermore, the greater the pumping speed of the oil pump 35, the greater the pressure inside the annular cavity 54, and the greater the oil injection flow of the oil injection hole 53. This allows for the simultaneous adjustment of the oil injection flow and the expansion of the rotational speed adjustment of the annular cover 52. In other words, the high-speed rotating annular cover 52 and the oil injection hole 53 can achieve uniform oil coating on the rapidly conveyed dry feed strips.

[0112] like Figure 1 As shown, the extrusion extruder 2 includes a screw extruder 21 and a hot extrusion head 22. A feed guide pipe 23 is provided between the screw extruder 21 and the hot extrusion head 22, and an extrusion speed sensor 24 for monitoring the extrusion speed of wet soft feed is provided on the feed guide pipe 23.

[0113] A straight guide tube 25 is provided at the outlet end of the thermal puffing extruder 22. The straight guide tube 25 is connected and installed to the puffing conveying channel 32 of the machine body 31. A conveying speed sensor 26 for monitoring the conveying speed of dry feed strips is provided on the straight guide tube 25.

[0114] Among them, a temperature sensor 27 for detecting the puffing temperature is provided on the puffing extruder 22, which, together with the detection result of the extrusion speed sensor 24, adjusts the extrusion speed of the wet soft feed so that the puffing degree of the wet soft feed meets the surface puffing requirements.

[0115] A flow sensor 61 is installed on the oil inlet pipe 6 to detect the oil flow rate. In conjunction with the detection result of the conveying speed sensor 24, the pumping oil flow rate is adjusted so that the amount of oil on the surface of the dried feed strips meets the requirements.

[0116] The extrusion speed sensor 24 is used to detect the speed at which the screw extruder 21 extrudes wet soft feed. That is, by detecting the movement speed of the wet soft feed in the feed tube 23, the extrusion speed of the screw extruder 21 is adjusted so that the extrusion speed matches the temperature of the extrusion head 22, so that the surface of the wet soft feed is extruded while the core of the wet soft feed is not extruded.

[0117] The conveying speed sensor 26 detects the moving speed (conveying speed) of the dry feed strips inside the straight conduit 25. Based on the moving speed of the dry feed strips and in conjunction with the flow sensor 61 on the oil inlet pipe 6, the oil pump 35 is adjusted to match the oil flow rate of the oil inlet pipe 6 with the moving speed of the dry feed strips, thus avoiding excessive or insufficient oil spraying.

[0118] The straight guide tube 25 is set at the outlet end of the extrusion extruder 22 so that the extruded feed strips are conveyed in a straight line, avoiding the bending of the extruded feed strips and affecting their conveying status in the extrusion conveying channel 32 in the oil sprayer 3.

[0119] like Figure 4 As shown, the cutter 4 includes a fixed frame 41 mounted on the machine body 31. The fixed frame 41 is equipped with two hollow rollers 42 controlled by a motor, and hollow cutters 43 are axially arranged on the surface of the hollow rollers 42.

[0120] Overflow holes 44 are provided on both sides of the cutter 43, and fluff layers 45 are provided on both sides of the hollow cutter 43. An oil supply pipe 46 is rotatably provided on the shaft end of the hollow roller 42 and fixed on the fixed frame 41. The oil supply pipe 46 is connected to the oil pump 35 through a pipeline.

[0121] In this process, the fluff layer 45 rubs against the end faces of the feed strips and feed pellets when the hollow cutter 43 cuts the feed strips, thus completing the oil replenishment at the ends of the feed pellets.

[0122] The two hollow rollers 42 rotate, so that the two hollow cutters 43 meet periodically and cut the feed stick located therebetween. The length of the cut feed stick, i.e. the size of the feed pellet, can be adjusted by controlling the rotation speed of the hollow rollers 42.

[0123] The oil pump 35 delivers oil to the hollow rollers 42 through a pipeline, and a pressure reducing valve is arranged on the pipeline to ensure that the amount of oil delivered to the hollow rollers 42 is much less than the amount of oil delivered to the oil inlet pipe 6.

[0124] The oil in the hollow rollers 42 enters the hollow cutters 43, and then the oil flows out of the overflow holes 44 of the hollow cutters 43 and is absorbed by the fluff layer 45, so that the fluff layer 45 is filled with oil. During the cutting of the feed stick, the fluff layer 45 contacts the end of the feed stick, so that the end of the feed stick and the feed pellet adhere to the oil to seal the core, further avoiding the rapid loss of feed nutrients.

[0125] It is worth noting that, since the added oil and fresh mulberry leaves have a shorter shelf life than existing dry feed, it is suitable for feed supply in large-scale breeding farms that can consume a large amount of feed in a short time without worrying about the shelf life of the feed, and can achieve on-demand production.

[0126] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements shall also be considered to fall within the protection scope of the present application.

Claims

1. A mulberry leaf chicken feed processing device, characterized in that, It comprises: a mixing machine for mixing mulberry leaf water, mulberry leaf residue, mulberry leaf fermentation powder and conventional feed raw materials uniformly; a puffing extruder, the feeding end of which is connected with the discharging end of the mixing machine, so that the wet soft feed is directly discharged into the puffing extruder after being stirred uniformly in the mixing machine to be extruded into feed dry strips; an oil spraying machine, the inlet end of which is connected with the outlet end of the puffing extruder, so that the extruded feed dry strips are sent into the oil spraying machine for oil spraying; a cutting device arranged at the outlet end of the oil spraying machine to cut the feed dry strips into feed granules after oil spraying is completed; wherein the puffing extruder adjusts the extrusion speed and puffing temperature to make the surface of the output wet soft feed be puffed and hardened, while the core of the wet soft feed is not puffed to protect the wet soft feed containing heat-decomposable nutrients inside; the oil spraying machine is internally provided with a ring-shaped nozzle, which uniformly sprays oil in the form of oil mist around the surface of the feed dry strips conveyed along the axis of the ring-shaped nozzle to make the surface of the feed dry strips rapidly absorb the oil and form an oil layer; and the oil mist flow of the ring-shaped nozzle is adjusted according to the conveying speed of the feed dry strips to make the oil content of the feed dry strips meet the set range; the oil spraying machine comprises a machine body, a puffing material conveying channel coaxial with the outlet end of the puffing extruder is arranged in the machine body, a ring-shaped groove is arranged in the puffing material conveying channel, and the ring-shaped nozzle is arranged in the ring-shaped groove; an oil tank and an oil pump connected with the oil tank through a pipeline are arranged on the machine body, an oil inlet pipe mounted on the ring-shaped nozzle is arranged on the machine body, and the oil inlet pipe is connected with the oil pump through a pipeline; the ring-shaped nozzle comprises a ring-shaped sleeve, a ring-shaped cover is arranged on the inner ring side of the ring-shaped sleeve, and a plurality of oil injection holes are arranged on the ring-shaped cover; an annular cavity is formed between the ring-shaped cover and the ring-shaped sleeve, the oil inlet pipe is arranged on the ring-shaped sleeve and communicates with the annular cavity; wherein the plurality of oil injection holes are staggered along the axial direction of the ring-shaped cover; the ring-shaped cover is sealingly and rotatably arranged on the ring-shaped sleeve, a plurality of blades are arranged on the outer ring side wall of the ring-shaped cover, and the blades are arranged at the gaps formed by the plurality of oil injection holes; wherein the oil inlet pipe is mounted along the tangential direction of the ring-shaped sleeve, and the oil inlet direction of the oil inlet pipe is opposite to the inclination direction of the blades.

2. The mulberry leaf chicken feed processing device according to claim 1, wherein an oil return pipe mounted on the ring-shaped nozzle is arranged on the machine body, and the oil return pipe is connected with the oil tank through a pipeline; wherein the oil return pipe is arranged on the ring-shaped sleeve and mounted along the tangential direction of the ring-shaped sleeve, and the oil return pipe is arranged in parallel and symmetrically with the oil inlet pipe.

3. The mulberry leaf chicken feed processing device according to claim 2, wherein The puffing extruder comprises a screw extruder and a hot puffing extrusion head, a material guide pipe is arranged between the screw extruder and the hot puffing extrusion head, and an extrusion speed sensor for monitoring the extrusion speed of the wet soft feed is arranged on the material guide pipe; An outlet end of the hot puffing extrusion head is provided with a straight guide pipe, the straight guide pipe is connected and mounted with the puffing material conveying channel of the machine body, and a conveying speed sensor for monitoring the conveying speed of the feed dry strip is arranged on the straight guide pipe; The cutter comprises a fixing frame arranged on the machine body, two hollow rollers controlled by a motor are arranged on the fixing frame, and the surface of the hollow rollers is provided with hollow cutters communicated with the hollow rollers in the axial direction; Overflow holes are arranged on both sides of the hollow cutters, and a wool layer is arranged on both sides of the hollow cutters, an oil supply pipe is rotatably arranged on the shaft end of the hollow roller and fixed on the fixing frame, and the oil supply pipe is connected with the oil pump through a pipeline; A temperature sensor for detecting the puffing temperature is arranged on the hot puffing extrusion head, so as to adjust the extrusion speed of the wet soft feed according to the detection result of the extrusion speed sensor, so that the puffing degree of the wet soft feed meets the surface puffing requirement; A flow sensor for detecting the oil conveying flow is arranged on the oil inlet pipe, so as to adjust the oil conveying flow according to the detection result of the conveying speed sensor, so that the oil amount on the surface of the feed dry strip meets the requirement; When the wool layer cuts the feed dry strip, the wool layer extrudes and rubs the end surface of the feed dry strip and the feed particles, so as to complete the oil supplement of the end part of the feed particles.

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