CN115428871A

CN115428871A - Preparation method of shrimp feed

Info

Publication number: CN115428871A
Application number: CN202210920514.3A
Authority: CN
Inventors: 林端理; 林本干; 武吉; 覃云飞; 覃治庭
Original assignee: Fuzhou Bohai Biotechnology Co ltd
Current assignee: Fuzhou Bohai Biotechnology Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-12-06

Abstract

The invention relates to the technical field of shrimp larvae feed preparation, in particular to a preparation method of a shrimp larvae feed, which comprises the following steps: preparing materials, primary mixing, secondary mixing, fermenting, granulating, screening and bagging; according to the shrimp seed feed formula, the feed raw materials with high utilization rate are selected, comprehensive and sufficient nutrition is provided for shrimp seeds, wherein the compound vitamins and mineral salts provide necessary nutrient substances for physiological metabolism of an organism, the soybean lecithin is a component of a cell membrane, the cell membrane feed has the functions of enhancing cell information transfer capacity, improving self-repairing capacity of the cell membrane, protecting the liver and resisting external invasion capacity, and has the function of improving immunity of the shrimp seeds by matching with other components; during preparation, the raw materials with a large weight ratio are uniformly mixed, then the raw materials with a small weight ratio are added, and finally the fish oil and the water are added in a dropwise manner, so that the raw materials are mixed more quickly and uniformly, the feed nutrition balance is ensured, and the feed production efficiency is improved.

Description

Preparation method of shrimp feed

Technical Field

The invention relates to the technical field of shrimp larvae feed preparation, in particular to a preparation method of a shrimp larvae feed.

Background

The artificial shrimp breeding needs to pass through four main development stages of nauplii, flea larvae, mysidacea larvae and juvenile shrimps, and the shrimp seedlings in the period mainly use biological feeds such as unicellular algae, rotifer, artemia and the like as starter feeds. The traditional bioactive baits, especially artemia and rotifers, are not stable in production due to the influence of natural environment. Along with the continuous expansion of the production of the shrimp seeds, the demand of artificial breeding on bait is also continuously increased, the biological bait not only can not meet the requirement of seed production far away in yield, but also can not meet the requirement of producing high-quality shrimp seeds due to the quality reduction of the biological bait polluted by the environment, and the fluctuation and the risk of the production of the shrimp seeds are increased. In addition, the culture of the biological live baits needs large-scale capital construction investment and occupies a large amount of space, so that the production cost of the live baits is overhigh, meanwhile, the production of the live baits is complex, a large amount of manpower investment is needed, and the large-scale development of shrimp breeding is not facilitated, so that the shrimp seed feed needs to be manually made, and the large-scale shrimp seed culture is ensured.

And when some production units artificially grow the shrimp seedlings, because the research on the nutrition requirements of the shrimp seedlings is incomplete, the survival rate of the larvae is low, great economic loss is brought to the shrimp culture, and the production efficiency of the existing shrimp seedling feed is low. The factors seriously restrict the production of the shrimp fries and hinder the further development of the shrimp aquaculture.

Disclosure of Invention

The invention aims to provide a preparation method of shrimp larvae feed to solve the problems mentioned in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a shrimp feed comprises the following steps:

s1: preparing materials: by weight, 20-30 parts of dry artemia powder, 5-15 parts of chick embryo protein, 5-15 parts of flour, 5-10 parts of soybean lecithin, 5-10 parts of peanut meal, 1.5-5 parts of fish oil, 0.1-0.3 part of mineral substances, 0.1-0.3 part of vitamin complex, 2-4 parts of yeast powder, 0.1-0.6 part of antioxidant, 2-4 parts of phagostimulant and 10-15 parts of fishbone powder;

s2: primary mixing: respectively carrying out superfine grinding on the prepared artemia salina dry powder, the chicken embryo protein, the flour, the fishbone powder, the peanut meal and the soybean lecithin by using an airflow type superfine grinder, screening the ground raw materials, adding the screened raw materials step by step according to a component proportion from more than one to less, uniformly mixing, then adding the mineral substances, the compound vitamins, the yeast powder, the antioxidant and the phagostimulant, and uniformly mixing to obtain a first-stage ingredient;

s3: and (3) secondary mixing: adding fish oil and water into the first-stage ingredients in a manner of mixing and dripping to obtain second-stage ingredients;

s4: and (3) fermentation: hermetically fermenting the secondary ingredients at the fermentation temperature of 30-36 ℃ for 90-140h to obtain a mixed fermentation product;

s5: and (3) granulation: placing the mixed fermentation product in a granulator for granulation, drying and dust removal to obtain feed particles;

s6: screening and bagging: and pouring the shrimp seed feed obtained by granulation into a screening device for screening step by step, distinguishing different particle sizes, bagging and packaging to finish the production of the shrimp seed feed.

Preferably, the antioxidant is dibutyl hydroxytoluene or ethoxy quinoline.

Preferably, the compound vitamin is at least two of vitamin E, vitamin C and vitamin B.

Preferably, screening plant in step S6 includes that the bottom cross section is the toper and is equipped with the urceolus of discharge gate, urceolus top intercommunication has the inlet pipe, the relative both sides wall symmetry of urceolus inner chamber is provided with lifting unit, and is two sets of install a plurality of groups bottom cross section for the toper and be equipped with the screening inner tube of slag notch between the lifting unit along the direction of height of urceolus, and sieve the screening hole diameter of inner tube from last down reducing in proper order, screening inner tube bottom slag notch intercommunication has the telescopic discharging pipe, the discharge end of discharging pipe runs through the urceolus lateral wall, drive assembly is installed at the urceolus top, but drive assembly installs the stirring subassembly of split, be provided with the stirring piece that a plurality of groups and screening inner tube one-to-ones set up on the stirring subassembly, every group be provided with on the stirring piece and sieve inner tube slag notch putty cylinder of mutually supporting.

Preferably, the lifting assembly comprises two mounting blocks, the two mounting blocks are respectively mounted on the upper side and the lower side of the side wall of the inner cavity of the outer barrel, a screw rod is rotatably connected between the two mounting blocks, a sliding block connected with the screening inner barrel is in threaded connection with the outer wall of the screw rod, a lifting driving motor is mounted on one mounting block, and the output end of the lifting driving motor is connected with the end part of the screw rod.

Preferably, the discharging pipe is including hose, return bend and the straight tube that communicates in proper order, hose one end is linked together with the slag notch of screening inner tube, straight tube one end runs through the urceolus lateral wall and welds mutually with the urceolus lateral wall, the angle of buckling of return bend is greater than the degree.

Preferably, the stirring subassembly includes the dwang, dwang top threaded connection has the adapter sleeve, the thread groove of mutually supporting with the adapter sleeve is seted up to the dwang bottom, the dwang outer wall is provided with stirring piece and putty cylinder.

Preferably, the stirring piece includes two dogs, and two dogs are installed on the dwang outer wall, dwang outer wall sliding connection has the installation cover, and the installation cover is located between two dogs, the relative bilateral symmetry rigid coupling of installation cover outer wall has the connecting rod, two the one end that the connecting rod was kept away from each other is installed brush and rubber respectively and is scraped the strip, and brush and rubber scrape the strip all with screening inner tube inner wall looks butt, dwang outer wall cover is equipped with the spring, and the spring is located between installation cover top and the dog.

Preferably, two the dwang outer wall between the dog is provided with two sets of spacing strips, the spacing groove of mutually supporting with spacing strip is seted up to the installation cover inner wall.

Preferably, the driving assembly comprises a driving motor and a gear box which are connected, the output end of the gear box is connected with an installation rod, and the end part of the installation rod is provided with a thread groove which is matched with the connecting sleeve.

Compared with the prior art, the invention has the beneficial effects that:

the shrimp seed feed formula selects feed raw materials with high utilization rate, provides comprehensive and sufficient nutrition for shrimp seeds, wherein the compound vitamins and mineral salts provide necessary nutrient substances for physiological metabolism of organisms, and the soybean lecithin is a component of cell membranes, has the functions of enhancing cell information transfer capacity, improving self-repairing capacity of the cell membranes, protecting livers and resisting external invasion capacity, is matched with other components, and has the function of improving the immunity of the shrimp seeds;

in the preparation process of the feed, the raw materials with a large weight ratio are uniformly mixed, then the raw materials with a small weight ratio are added, and finally the fish oil and the water are added in a dropwise manner, so that the raw materials are mixed more quickly and uniformly, the balance of the feed nutrition is ensured, and the production efficiency of the feed is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, without inventive efforts, other drawings can be obtained according to the drawings

FIG. 1 is a schematic flow chart of the preparation method of the present invention

FIG. 2 is a schematic view of the construction of the screening device of the present invention;

FIG. 3 is a schematic front sectional view of a screening device according to the present invention;

FIG. 4 is a schematic side sectional view of a screening device according to the present invention;

FIG. 5 is a schematic view of the construction of the screening inner cartridge and its connecting parts in accordance with the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 3;

FIG. 7 is a schematic view of the stirring assembly of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an outer cylinder; 2. a feeding pipe; 3. a lifting assembly; 31. mounting blocks; 32. a screw rod; 33. a slider; 34. A lifting drive motor; 4. screening the inner cylinder; 5. a discharge pipe; 51. a hose; 52. bending the pipe; 53. a straight pipe; 6. a drive assembly; 61. a drive motor; 62. a gear case; 63. mounting a rod; 7. a stirring assembly; 71. rotating the rod; 72. connecting sleeves; 73. a stopper; 74. installing a sleeve; 75. a connecting rod; 76. a brush; 77. a rubber scraping strip; 78. a spring; 8. and (5) blocking the material cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution:

a preparation method of a shrimp feed comprises the following steps:

s1: preparing materials: by weight, 20-30 parts of artemia dry powder, 5-15 parts of chicken embryo protein, 5-15 parts of flour, 5-10 parts of soybean lecithin, 5-10 parts of peanut meal, 1.5-5 parts of fish oil, 0.1-0.3 part of mineral substances, 0.1-0.3 part of multivitamin, 2-4 parts of yeast powder, 0.1-0.6 part of antioxidant, 2-4 parts of phagostimulant and 10-15 parts of fishbone powder;

s3: and (3) secondary mixing: adding fish oil and water into the primary ingredient in a manner of mixing and dripping to obtain a secondary ingredient;

s6: screening and bagging: and pouring the shrimp larvae feed obtained by granulation into a screening device for screening step by step, distinguishing different particle sizes, bagging and packaging to finish the preparation of the shrimp larvae feed.

Specifically, the antioxidant is dibutyl hydroxy toluene or ethoxy quinoline.

Specifically, the compound vitamin is at least two of vitamin E, vitamin C and vitamin B.

Specifically, screening plant in step S6 includes that the bottom cross section is the toper and is equipped with the urceolus 1 of discharge gate, 1 top intercommunication of urceolus has inlet pipe 2, the relative both sides wall symmetry in 1 inner chamber of urceolus is provided with lifting unit 3, install between two sets of lifting unit 3 along the direction of height of urceolus 1 that a plurality of groups of bottom cross sections are the toper and are equipped with the screening inner tube 4 of slag notch, and the screening hole diameter of screening inner tube 4 reduces from last down in proper order, screening inner tube 4 bottom slag notch intercommunication has telescopic discharging pipe 5, the discharge end of discharging pipe 5 runs through 1 lateral wall of urceolus, drive assembly 6 is installed at 1 top of urceolus, but drive assembly 6 output is installed stirring subassembly 7 of split, be provided with the stirring piece that a plurality of groups and screening inner tube 4 one-to-one-on the stirring subassembly 7, be provided with the putty cylinder 8 of mutually supporting with screening inner tube 4 slag notch on every stirring subassembly 7 of group.

From the above description it follows that: during fodder screening, enter into the screening inner tube of the top through the inlet pipe in, and start drive assembly and drive the stirring subassembly and rotate and stir the fodder, thereby make the fodder carry out the dynamic screening in the screening inner tube, and the fodder that obtains of screening drops and carries out next screening in the screening inner tube of next layer, so the successive layer screens, thereby realize the classified screening of fodder, and when screening, the discharge gate of screening inner tube is plugged up to the putty cylinder, avoid the fodder to fall out, thereby make the screening more thorough, and after the screening finishes, drive the screening inner tube on every layer and slide downwards through the lifting unit, thereby make the putty cylinder break away from the discharge gate, and then the fodder after every layer of screening can be simultaneously from the discharging pipe discharge that is linked together separately, improve discharging efficiency under the prerequisite of guaranteeing not compounding.

Specifically, lifting unit 3 includes two installation pieces 31, and two installation pieces 31 are installed respectively in the upper and lower both sides of urceolus 1 inner chamber lateral wall, rotate between two sets of installation pieces 31 and are connected with lead screw 32, and lead screw 32 outer wall threaded connection has the slider 33 that is connected with screening inner tube 4, installs lift driving motor 34 on a set of installation piece 31, and lift driving motor 34 output is connected with lead screw 32 tip.

From the above description it follows that: the lifting drive motor rotates to drive the lead screw to rotate, thereby driving the slider and the screening inner barrel to slide up and down, and then when the screening finishes and needs the ejection of compact, the decline that can pass through the screening inner barrel makes the putty cylinder break away from the slag notch of screening inner barrel, thereby realizes the ejection of compact.

Specifically, the discharge pipe 5 comprises a hose 51, an elbow 52 and a straight pipe 53 which are sequentially communicated, one end of the hose 51 is communicated with a slag outlet of the screening inner cylinder 4, one end of the straight pipe 53 penetrates through the side wall of the outer cylinder 1 and is welded with the side wall of the outer cylinder 1, and the bending angle of the elbow 52 is larger than 90 degrees.

From the above description it follows that: the setting up of hose makes the discharging pipe possess certain elasticity performance to guarantee the upper and lower slip of screening inner tube, the return bend angle is greater than 90 degrees, makes the discharging pipe possess the angle of downward sloping, thereby makes things convenient for the ejection of compact.

Specifically, stirring subassembly 7 includes dwang 71, and dwang 71 top threaded connection has adapter sleeve 72, and the thread groove of mutually supporting with adapter sleeve 72 is seted up to dwang 71 bottom, and dwang 71 outer wall is provided with stirring piece and putty cylinder 8.

From the above description it follows that: several groups of rotating rods are connected through connecting sleeves, so that the connection is simple and convenient, and the connection strength is ensured.

Specifically, the stirring piece includes two dogs 73, two dogs 73 are installed on dwang 71 outer wall, dwang 71 outer wall sliding connection has the installation cover 74, and installation cover 74 is located between two dogs 73, the relative bilateral symmetry rigid coupling of installation cover 74 outer wall has connecting rod 75, brush 76 and rubber scraping strip 77 are installed respectively to the one end that two connecting rods 75 kept away from each other, and brush 76 and rubber scraping strip 77 all with 4 inner wall looks butt of screening inner tube, dwang 71 outer wall cover is equipped with spring 78, and spring 78 is located between installation cover 74 top and the dog 73.

From the above description it follows that: rubber scrapes the strip and possesses certain intensity and can play the effect that promotes the fodder, and the brush can clean screening inner tube inner wall, avoids the screening hole of screening inner tube to block up, and sliding connection can guarantee when screening inner tube descends a take the altitude between installation cover and the dwang, rubber scrapes strip and brush homoenergetic and screening inner tube inner wall looks butt, and the setting of spring can guarantee the stability of butt.

Specifically, two sets of limiting strips are arranged on the outer wall of the rotating rod 71 between the two stoppers 73, and limiting grooves matched with the limiting strips are formed in the inner wall of the mounting sleeve 74.

From the above description it follows that: through the mutual cooperation of spacing strip and spacing groove can guarantee the mutual joint between installation cover and the dwang to guarantee the synchronism of pivoted.

Specifically, the driving assembly 6 includes a driving motor 61 and a gear box 62 connected to each other, an output end of the gear box 62 is connected to a mounting rod 63, and a thread groove matched with the connecting sleeve 72 is formed at an end of the mounting rod 63.

From the above description it follows that: the driving motor drives the installation rod to rotate through the gear set in the gear box, so that the installation rod is driven to rotate, the gear box can play a role in speed regulation of the rotating speed of the driving motor, and the end part of the installation rod is provided with a thread groove, so that the installation rod can be connected with a stirring assembly below the installation rod.

Referring to fig. 1, a first embodiment of the present invention is:

a preparation method of a shrimp feed comprises the following steps:

s1: preparing materials: by weight, 30 parts of dry artemia powder, 13 parts of chick embryo protein, 15 parts of flour, 7 parts of soybean lecithin, 8 parts of peanut meal, 3 parts of fish oil, 0.2 part of mineral matter, 0.3 part of compound vitamin (vitamin E and vitamin C), 4 parts of yeast powder, 0.5 part of antioxidant (ethoxyquin), 4 parts of phagostimulant and 15 parts of fish bone meal;

s4: and (3) fermentation: sealing and fermenting the secondary ingredients at 35 ℃ for 120h to obtain a mixed fermented product;

Referring to fig. 2-7, the second embodiment of the present invention is:

the difference between the present embodiment and the first embodiment is:

the screening and bagging process of the feed is as follows:

granulating, drying and dedusting shrimp feed components are added into the uppermost screening inner cylinder 4 in the outer cylinder 1 through the inlet pipe 2, then the driving motor 61 is started, the driving motor 61 drives the gear set in the gear box 62 to rotate, the mounting rod 63 and the rotating rod 71 are driven to rotate, the mounting sleeve 74 is driven, the connecting rod 75, the stirring part formed by the brush 76 and the rubber scraping strip 77 is driven to rotate, so that the feed in the uppermost screening inner cylinder 4 is stirred and dynamically screened, the feed in accordance with the particle size falls into the next screening inner cylinder 4 through the screening holes of the screening inner cylinder 4, the first-stage screening of the feed is realized, the feed falling to the second layer is dynamically screened through the stirring part, the multistage screening of the feed is realized, the finally screened feed with the minimum particle size is discharged from the discharge hole at the bottom of the outer cylinder 1, and then an operator performs bagging and packaging processes;

after screening is finished (the judgment can be carried out by setting a form of screening duration or observing the discharging flow rate of a discharging port at the bottom of the outer barrel 1), starting a lifting driving motor 34, wherein the lifting driving motor 34 rotates to drive a screw rod 32 to rotate, so that each slide block 33 and each screening inner barrel 4 are driven to simultaneously slide downwards, the slag outlet of each screening inner barrel 4 is separated from a blocking cylinder 8 on the stirring component 7 (the blocking cylinder 8 is made of rubber), the slag outlet of each layer of screening inner barrel 4 is simultaneously opened, the filtered residual materials in each screening inner barrel 4 are discharged into the discharging pipe 5 from the slag outlet of the screening inner barrel 4, the discharging end with the discharging pipe 5 is discharged for collection, the simultaneous separate collection of feeds with different particle sizes is realized, the screening efficiency is improved, in the discharging process of the screening inner barrel 4, the driving motor 61 rotates to drive the stirring component 7 to rotate, a brush 76 and a rubber scraping strip 77 to clean the screening inner barrel 4, the discharging efficiency is further improved, and then operators carry out bagging and packaging processes respectively;

after the equal ejection of compact of screening inner tube 4 on every layer finishes, start driving motor 61, make driving motor 61 antiport (driving motor 61 is the motor that just reverses), thereby drive slider 33 and screening inner tube 4 and rise, make putty cylinder 8 fill in again in the slag notch of screening inner tube 4 (the diameter of putty cylinder 8 equals the internal diameter of screening inner tube 4 slag notch), then continue to add the fodder through inlet pipe 2 in to outer 1 and carry out next screening flow.

In this embodiment, when the sieving inner cylinder 4 is driven by the lifting driving motor 34 to slide downwards, the discharge pipe 5 is provided with the hose 51 (the sliding distance of the sieving inner cylinder 4 is within the telescopic range of the hose 51), and the straight pipe 53 of the discharge pipe 5 is partially fixedly connected with the outer cylinder 1, so that the sieving inner cylinder 4 can normally slide upwards and downwards while the discharge angle of the discharge pipe 5 is unchanged;

in this embodiment, an installation hole is formed in the elbow 52 of the discharge pipe 5 to be matched with the rotating rod 71 (the diameter of the installation hole is slightly larger than that of the rotating rod 71, for example, the diameter difference between the two is 1-2 mm), so that the rotating rod 71 can normally rotate and slide up and down in the discharge pipe 5, and the diameter of the installation hole is only slightly larger than that of the rotating rod 71, and the rotating rod 71 is always in a rotating state in the discharging process, so that feed can be prevented from being clamped in a gap between the rotating rod 71 and the installation hole, and the feed cannot fall out from the rotating rod 71 and the installation hole;

in this embodiment, in order to ensure stable discharge (avoid blockage) of the discharge pipe 5, the diameter difference between the rotating rod 71 and the slag outlets of the discharge pipe 5 and the sieving inner cylinder 4 is 30-80cm (which can be adjusted according to the overall size of the device), and meanwhile, the rotating rod 71 is always in a rotating state during the discharge process of the sieving inner cylinder 4, so that blockage of the discharge pipe 5 can be further avoided;

in this embodiment, in the discharging process of the screening inner cylinder 4, since the height of the screening inner cylinder 4 is reduced, and the stirring member slides downwards on the rotating rod 71 through the mounting sleeve 74, the brush 76 and the rubber scraper 77 are always abutted against the screening inner cylinder 4, and the abutment is firmer by the action of the tensile force of the spring 78 (the spring 78 is in a compressed state in the screening and discharging processes of the screening inner cylinder 4);

in this embodiment, the installation of dwang 71 and stirring piece is as follows, insert and pass the mounting hole of discharging pipe 5 from screening inner tube 4 top with the one end that dwang 71 bottom was seted up the thread groove earlier, and make the stirring piece butt live screening inner tube 4 inner wall, putty cylinder 8 is filled in the slag notch of screening inner tube 4, then rotate the adapter sleeve 72 at lower floor's dwang 71 top, make adapter sleeve 72 be connected with the bottom thread groove of upper dwang 71, then be connected the adapter sleeve 72 of dwang 71 the top with installation pole 63 bottom, thereby accomplish the installation of stirring subassembly 7, and the bottom that is located the dwang 71 of lower floor is putty cylinder 8, after the installation of stirring subassembly 7 was accomplished, spring 78 on the stirring piece is in the compression state.

In this embodiment, in order to facilitate the overall control of the apparatus, a control panel is disposed on the side wall of the apparatus, and the control panel is electrically connected to the driving motor 61 and the lifting driving motor 34 in the apparatus; and in order to facilitate the maintenance of the device, a maintenance door (as shown in fig. 1) is arranged on the side wall of the device;

in this embodiment, in order to facilitate the fodder collection of each layer of screening inner tube 4, can set up towards different positions with the discharging pipe 5 of each layer of screening inner tube 4.

The screening plant who uses in this embodiment is when fodder screening, the fodder can enter into the screening inner tube of top through the inlet pipe in, and start drive assembly and drive the stirring subassembly and rotate and stir the fodder, thereby make the fodder carry out the dynamic screening in the screening inner tube, and the fodder that the screening obtained falls and carries out next screening in the screening inner tube of next layer, so the successive layer filters, thereby realize the hierarchical screening of fodder, and when the screening, the discharge gate of screening inner tube is plugged up to the putty cylinder, avoid the fodder to fall out, thereby make the screening more thorough, and after the screening finishes, drive the screening inner tube on every layer and slide downwards through the lift assembly, thereby make the putty cylinder break away from the discharge gate, and then the fodder after every layer of screening can be simultaneously from the discharging pipe discharge that is linked together separately, improve ejection of compact efficiency under the prerequisite of guaranteeing not compounding.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, for example, as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate agent, and may be used for communicating the inside of two elements or interacting relation of two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present invention can be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

1. A preparation method of shrimp feed is characterized by comprising the following steps: the preparation process comprises the following steps:

s2: primary mixing: respectively carrying out superfine grinding on the prepared artemia dry powder, chicken embryo protein, flour, fish bone meal, peanut meal and soybean lecithin by using an airflow superfine grinder, screening the ground raw materials, adding the screened raw materials step by step according to a component proportion from more to less, uniformly mixing, then adding mineral substances, compound vitamins, yeast powder, an antioxidant and a phagostimulant, and uniformly mixing to obtain a primary ingredient;

s4: fermentation: hermetically fermenting the secondary ingredients at the fermentation temperature of 30-36 ℃ for 90-140h to obtain a mixed fermentation product;

2. The method for preparing a shrimp feed according to claim 1, characterized in that: the antioxidant is dibutyl hydroxy toluene or ethoxy quinoline.

3. The method for preparing a shrimp feed according to claim 1, wherein the method comprises the following steps: the compound vitamin is at least two of vitamin E, vitamin C and vitamin B.

4. The method for preparing a shrimp feed according to claim 1, characterized in that: screening plant in step S6 includes urceolus (1) that the bottom cross section is the toper and is equipped with the discharge gate, urceolus (1) top intercommunication has inlet pipe (2), urceolus (1) inner chamber relative both sides wall symmetry is provided with lifting unit (3), and is two sets of lifting unit (3) are installed a plurality of groups bottom cross section for the toper and are equipped with screening inner tube (4) of slag notch along the direction of height of urceolus (1) between the lifting unit (3), and the screening hole diameter of screening inner tube (4) down reduces in proper order from last, screening inner tube (4) bottom slag notch intercommunication has telescopic discharging pipe (5), the discharge end of discharging pipe (5) runs through urceolus (1) lateral wall, drive assembly (6) is installed at urceolus (1) top, but the stirring subassembly (7) of split is installed to drive assembly (6) output, be provided with the stirring piece that a plurality of groups and screening inner tube (4) one-to-one set up on stirring subassembly (7), every group be provided with stifled material (8) of mutually supporting with screening inner tube (4) cylinder mouth on stirring piece (7).

5. The method for preparing a shrimp feed according to claim 4, characterized in that: lifting unit (3) are including two installation pieces (31), two install piece (31) and install respectively in urceolus (1) inner chamber lateral wall's upper and lower both sides, and are two sets of rotate between installation piece (31) and be connected with lead screw (32), lead screw (32) outer wall threaded connection has slider (33) that are connected with screening inner tube (4), and is a set of install lift driving motor (34) on installation piece (31), and lift driving motor (34) output is connected with lead screw (32) tip.

6. The method for preparing a shrimp feed according to claim 4, wherein the method comprises the following steps: discharging pipe (5) are including hose (51), return bend (52) and straight tube (53) that communicate in proper order, hose (51) one end is linked together with the slag notch of screening inner tube (4), straight tube (53) one end run through urceolus (1) lateral wall and weld mutually with urceolus (1) lateral wall, the angle of buckling of return bend (52) is greater than 90 degrees.

7. The method for preparing a shrimp feed according to claim 4, wherein the method comprises the following steps: stirring subassembly (7) are including dwang (71), dwang (71) top threaded connection has adapter sleeve (72), the thread groove of mutually supporting with adapter sleeve (72) is seted up to dwang (71) bottom, dwang (71) outer wall is provided with stirring piece and putty cylinder (8).

8. The method for preparing a shrimp feed according to claim 7, wherein the method comprises the following steps: stirring spare includes two dog (73), and install on dwang (71) outer wall two dog (73), dwang (71) outer wall sliding connection has installation cover (74), and installation cover (74) is located between two dog (73), the relative bilateral symmetry rigid coupling of installation cover (74) outer wall has connecting rod (75), two connecting rod (75) the one end of keeping away from each other of connecting rod (75) is installed brush (76) and rubber respectively and is scraped strip (77), and brush (76) and rubber scrape strip (77) all with screening inner tube (4) inner wall looks butt, dwang (71) outer wall cover is equipped with spring (78), and spring (78) is located between installation cover (74) top and dog (73).

9. The method for preparing a shrimp feed according to claim 8, wherein the method comprises the following steps: two dwang (71) outer wall between dog (73) is provided with two sets of spacing strips, the spacing groove of mutually supporting with spacing strip is seted up to installation cover (74) inner wall.

10. The method for preparing a shrimp feed according to claim 7, wherein the method comprises the following steps: the driving assembly (6) comprises a driving motor (61) and a gear box (62) which are connected, the output end of the gear box (62) is connected with an installation rod (63), and the end part of the installation rod (63) is provided with a thread groove which is matched with the connecting sleeve (72).