CN114794323A

CN114794323A - Piglet feed composite additive and production equipment thereof

Info

Publication number: CN114794323A
Application number: CN202210446740.2A
Authority: CN
Inventors: 赵晓南; 胡友军; 刘坚; 程皇座; 宾艳芳; 胡文继
Original assignee: Guangdong Acid Power Biotechnology Co ltd
Current assignee: Guangdong Acid Power Biotechnology Co ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-07-29

Abstract

The invention discloses a piglet feed composite additive which comprises the following components in percentage by weight: 5-25% of lactic acid, 5-15% of citric acid, 5-15% of fumaric acid, 3-15% of silicon dioxide, 2-10% of benzoic acid, 3-15% of beta-cyclodextrin, 1.5-3% of talcum powder and/or magnesium stearate, and 5-60% of stearic acid and/or palmitic acid or acrylic resin. The piglet feed compound additive and the production equipment thereof provided by the invention have the advantages that the incidence rate of livestock diseases is low, the acidifier can be fully mixed in each production process part, the concentration of the acidifier is guaranteed, the quality is stable, and the production cost is reduced.

Description

Piglet feed composite additive and production equipment thereof

Technical Field

The invention relates to the technical field of preparation of feed additives, in particular to a piglet feed compound additive and production equipment thereof.

Background

The acidifier is an environment-friendly additive of animal feed, has no residue, no drug resistance and no toxic or harmful effect, promotes the development of the whole animal husbandry, and is particularly required to be used for feeding weaned piglets.

At present, the unable each part of guaranteeing the acidifier preparation of prior art can fully mix for acidifier concentration can not be ensured, and the quality is unstable, and the incidence of livestock disease is higher, and manufacturing cost is high, and production efficiency is low, consequently, a compound acidifier and preparation facilities need to solve above-mentioned problem urgently.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the piglet feed compound additive and the production equipment thereof, wherein the incidence rate of livestock diseases is low, the acidifier can be fully mixed in each production process part, the concentration of the acidifier is guaranteed, the quality is stable, and the production cost is reduced.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a piglet feed compound additive comprises the following components in percentage by weight: 5-25% of lactic acid, 5-15% of citric acid, 5-15% of fumaric acid, 3-15% of silicon dioxide, 2-10% of benzoic acid, 3-15% of beta-cyclodextrin, 1.5-3% of talcum powder and/or magnesium stearate, and 5-60% of stearic acid and/or palmitic acid or acrylic resin.

As a further improvement of the invention: the paint comprises the following components in percentage by weight: 5-15% of lactic acid, 5-10% of citric acid, 5-10% of fumaric acid, 3-10% of silicon dioxide, 5-10% of benzoic acid, 3-10% of beta-cyclodextrin, 1.5-3% of talcum powder and/or magnesium stearate, and 20-60% of stearic acid and/or palmitic acid or acrylic resin.

As a further improvement of the invention: the paint comprises the following components in percentage by weight: 15% lactic acid, 10% citric acid, 10% fumaric acid, 10% silicon dioxide, 8% benzoic acid, 5% beta-cyclodextrin, 2% talc and/or magnesium stearate, 40% stearic acid and/or palmitic acid or acrylic resins.

The utility model provides a piglet feed composite additive production facility, is including mixing machine, pelletization screening machine, hot melt machine, capsule machine and branch sieve machine, mix machine, pelletization screening machine, capsule machine and divide the sieve machine to connect gradually through the pipe-line fit, it is used for including solid-liquid mixture and solid mixing to mix the machine, the pelletization divides the sieve machine to be used for the mixture pelletization and classified screening, divide the sieve machine to be used for semi-manufactured goods classified screening, the hot melt machine passes through the heat preservation pipe cooperation and is connected with the capsule machine, it still is equipped with the conveyer belt to divide the sieve machine below, fixedly connected with charge pump on the pipeline that sieve machine and capsule machine are connected is divided in the pelletization, the conveyer belt is used for transporting finished product acidifying agent granule.

As a further improvement of the invention: the mixer comprises a mixer body, the mixer body is provided with a solid-liquid mixing mechanism, a crushing mechanism and a solid-solid mixing mechanism, the mixer body is also provided with a liquid feeding port and a solid feeding port which are fixedly connected with the top of the mixer body, the mixing machine body is also provided with a clapboard which is fixedly connected inside the mixing machine body, one side of the clapboard is also provided with a liquid outlet, the baffle plate is used for separating the solid-liquid mixing mechanism and the solid-solid mixing mechanism, a baffle plate is also arranged in the mixing machine body, the baffle is connected with the inner side wall of the mixer body, the baffle is provided with a solid-liquid stop gate and a solid-solid stop gate, the solid-liquid baffle door and the solid-solid baffle door are connected with the clapboard, the mixing machine body is also internally provided with a spray head, the atomizing head is arranged on one side of the solid-liquid mixing mechanism and is fixedly connected with the mixing machine body, and the bottom of the mixing machine body is connected with a mixing outlet.

As a further improvement of the invention: solid-liquid mixing mechanism includes solid-liquid motor and solid-liquid stirring subassembly, the solid-liquid motor is fixed at mixing organism lateral wall, the solid-liquid stirring subassembly includes (mixing) shaft and poking bar, the (mixing) shaft is connected with solid-liquid motor, poking bar evenly distributed on the (mixing) shaft with (mixing) shaft fixed connection, rubbing crusher constructs including crushing motor, quartering hammer and crushing roller, crushing motor is fixed at mixing organism lateral wall, crushing roller is connected with crushing motor, crushing hammer evenly distributed on crushing roller with crushing roller fixed connection, solid mixing mechanism is including solid motor, mixing shaft and mixing vane admittedly, solid motor is fixed at mixing organism lateral wall admittedly, mixing shaft is connected with solid motor admittedly, mixing vane encircles and fixes on mixing shaft.

As a further improvement of the invention: the granulation screening machine includes the pelletization organism, be equipped with the granulator in the granulator, granulator and pelletization organism fixed connection, still be equipped with the pelletization board in the pelletization organism, the pelletization board is connected with the pelletization organism, the pelletization board is still located under the granulator, the pelletization export has been seted up to the pelletization board, still be equipped with first branch sieve, first real board and second branch sieve in the granulator, first branch sieve, first real board and second divide sieve and the pelletization organism, the granulator is external still to be fixed with the circulating pipe, the circulating pipe internal fixation has the circulating pump, pelletization bottom of the body still is equipped with the screening export.

As a further improvement of the invention: the hot melt machine includes a jar body, a jar body is equipped with hot melt motor and temperature-sensing ware, hot melt motor and jar body fixed connection, the temperature-sensing ware is fixed at a jar external wall, a jar body still is equipped with the dog-house, the dog-house is fixed at a jar body top, still be equipped with the hot melt axle in the jar body, the hot melt axle is connected with the hot melt motor, the hot melt axle is equipped with heating pipe and hot melt leaf, the heating pipe cup joints with the hot melt axle, the hot melt leaf runs through heating pipe and hot melt axle fixed connection, jar body bottom still is fixed with hot melt doors.

As a further improvement of the invention: the capsule machine includes the box, the box is equipped with vibrating motor and vibrating screen, vibrating motor and box lateral wall fixed connection, vibrating screen is connected with vibrating motor, the box still is equipped with a plurality of coating shower nozzle, coating shower nozzle and box fixed connection.

As a further improvement of the invention: divide the screen (ing) machine to include the cabinet body, the internal one-level screen cloth, the real board of second and the two poles screen cloth of being equipped with of cabinet, the real board of one-level screen cloth, second and two poles screen cloth and cabinet body fixed connection, the one-level screen cloth still is connected with the real board of second, the discharge gate has still been seted up to cabinet body bottom.

As a further improvement of the invention: the mixing machine is characterized in that a discharging pump is further arranged at the bottom of the mixing machine and fixedly connected with the mixing machine body, and a coating pump is further fixed on the coating machine.

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

1. the piglet feed composite additive is fine particles, can effectively reduce the contact area of the acidifier particles in the digestion process, prevents excessive consumption in the stomach, effectively enters the intestinal tract, plays a role in the intestinal tract, has good stability, small loss in the production process, high utilization rate, easily-obtained coating raw materials, reduced production cost, short and simple process flow and easy popularization and use.

2. The piglet feed composite additive production equipment disclosed by the invention can effectively reduce the production cost and shorten the production process flow by using the combined mixer, and can more effectively mix raw materials by arranging a plurality of stirring combinations.

3. Set up a plurality of stirring combinations on whole flow, can guarantee that the acidifying agent can the intensive mixing at each production flow part, the acidifying agent concentration obtains guaranteeing, and steady quality reduces manufacturing cost.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a first schematic structural diagram of the mixer of the present invention.

FIG. 3 is a schematic diagram of the mixer of the present invention.

Figure 4 is a schematic diagram of the granulation screen of the present invention.

FIG. 5 is a schematic structural diagram of the hot-melt machine of the present invention.

FIG. 6 is a schematic view of the structure of the coating machine of the present invention.

Fig. 7 is a schematic structural view of the screening machine of the present invention.

Fig. 8 is a graph showing the PH change of an aqueous solution of an embodiment of the piglet feed additive composition of the present invention. Reference numbers in the figures: 1. a mixer 11, a mixer body 12, a solid-liquid mixing mechanism 121, a solid-liquid motor 122, a stirring shaft 123, a stirring rod 13, a crushing mechanism 131, a crushing motor 132, a crushing shaft 133, a crushing hammer 14, a solid-solid mixing mechanism 141, a solid-solid motor 142, a mixing shaft 143, a mixing blade 15, a liquid inlet 16, a solid inlet 17, a spray head 18, a partition plate 19, a baffle plate 2, a granulation screening machine 21, a granulation body 22, a granulator 23, a granulation plate 24, a granulation outlet 25, a first sieve plate 26, a first solid plate 27, a second sieve plate 28, a circulation pipe 29, a circulation pump 3, a hot melting machine 31, a tank body 32, a hot melting motor 33, a temperature sensor 34, a feeding port 35, a hot melting shaft 36, a heating pipe 37, a hot melting blade 38, a hot melting door , 39, a heat preservation pipe, 4. the coating machine comprises a coating machine 41, a box body 42, a vibration motor 43, a vibration screen 44, a coating nozzle 45, a coating pump 5, a screening machine 51, a cabinet body 52, a primary screen 53, a second solid plate 54, a secondary screen 55, a discharge hole 6, a conveyor belt 7 and an electric pump.

Detailed Description

The invention will now be further described with reference to the accompanying description and examples:

detailed description of the invention:

The paint comprises the following components in percentage by weight: 5-15% of lactic acid, 5-10% of citric acid, 5-10% of fumaric acid, 3-10% of silicon dioxide, 5-10% of benzoic acid, 3-10% of beta-cyclodextrin, 1.5-3% of talcum powder and/or magnesium stearate, and 20-60% of stearic acid and/or palmitic acid or acrylic resin.

The paint comprises the following components in percentage by weight: 15% lactic acid, 10% citric acid, 10% fumaric acid, 10% silicon dioxide, 8% benzoic acid, 5% beta-cyclodextrin, 2% talc and/or magnesium stearate, 40% stearic acid and/or palmitic acid or acrylic resins.

The utility model provides a piglet feed composite additive production facility, is including mixing machine 1, pelletization screening machine 2, hot melt machine 3, capsule machine 4 and minute sieve machine 5, mix machine 1, pelletization screening machine 2, capsule machine 4 and divide sieve machine 5 to connect gradually through the pipe-line fit, mix machine 1 and be used for including solid-liquid mixture and solid-solid mixture, the pelletization divides sieve machine 5 to be used for the mixture pelletization and screens in grades, divide sieve machine 5 to be used for semi-manufactured goods screening in grades, hot melt machine 3 is connected with capsule machine 4 through the cooperation of heat preservation pipe 39, divide sieve machine 5 below still to be equipped with conveyer belt 6, the pelletization divides fixedly connected with charge pump 7 on the pipeline that sieve machine 5 and capsule machine 4 are connected, conveyer belt 6 is used for transporting finished product acidifier grain.

The mixer 1 comprises a mixer body 11, the mixer body 11 is provided with a solid-liquid mixing mechanism 12, a crushing mechanism 13 and a solid-solid mixing mechanism 14, the mixer body 11 is further provided with a liquid feeding port 15 and a solid feeding port 16, the liquid feeding port 15 and the solid feeding port 16 are fixedly connected at the top of the mixer body 11, the mixer body 11 is further provided with a partition plate 18, the partition plate 18 is fixedly connected inside the mixer body 11, a liquid outlet is further formed in one side of the partition plate 18, the partition plate 18 is used for separating the solid-liquid mixing mechanism 12 from the solid-solid mixing mechanism 14, a baffle plate 19 is further arranged in the mixer body 11, the baffle plate 19 is connected to the inner side wall of the mixer body 11, the partition plate 18 is provided with a solid-liquid stop gate and a solid-solid stop gate, the solid-liquid stop gate and the solid stop gate are connected with the partition plate 18, an atomizing head 17 is further arranged in the mixer body 11, the atomizing head 17 is arranged on one side of the solid-liquid mixing mechanism 12 and is fixedly connected with the mixer body 11, the bottom of the mixing machine body 11 is connected with a mixing outlet.

The solid-liquid mixing mechanism 12 comprises a solid-liquid motor 121 and a solid-liquid stirring component, the solid-liquid motor 121 is fixed on the outer side wall of the mixing machine body 11, the solid-liquid stirring component comprises a stirring shaft 122 and a stirring rod 123, the stirring shaft 122 is connected with a solid-liquid motor 121, the stirring rods 123 are uniformly distributed on the stirring shaft 122 and are fixedly connected with the stirring shaft 122, the crushing mechanism 13 includes a crushing motor 131, a crushing hammer 133 and a crushing shaft 132, the pulverizing motor 131 is fixed on the outer side wall of the mixing machine body 11, the pulverizing shaft 132 is connected with the pulverizing motor 131, the crushing hammers 133 are uniformly distributed on the crushing shaft 132 and fixedly connected with the crushing shaft 132, the solid-solid mixing mechanism 14 comprises a solid-solid motor 141, a mixing shaft 142 and a mixing blade 143, the solid motor 141 is fixed on the outer side wall of the mixing machine body 11, the mixing shaft 142 is connected with the solid motor 141, and the mixing blade 143 is fixed on the mixing shaft 142 in a surrounding manner.

The granulation screening machine 2 includes the pelletization organism 21, be equipped with the granulator 22 in the pelletization organism 21, granulator 22 and pelletization organism 21 fixed connection, still be equipped with the pelletization board 23 in the pelletization organism 21, the pelletization board 23 is connected with the pelletization organism 21, the pelletization board 23 is still located under the pelletization 22, pelletization export 24 has been seted up to the pelletization board 23, still be equipped with first minute sieve 25, first real board 26 and second minute sieve 27 in the pelletization organism 21, first minute sieve 25, first real board 26 and second minute sieve 27 and pelletization organism 21, the pelletization organism 21 is outer still to be fixed with circulating pipe 28, be fixed with circulating pump 29 in the circulating pipe 28, pelletization organism 21 bottom still is equipped with the screening export.

The hot melting machine 3 comprises a tank body 31, the tank body 31 is provided with a hot melting motor 32 and a temperature sensor 33, the hot melting motor 32 is fixedly connected with the tank body 31, the temperature sensor 33 is fixed on the outer side wall of the tank body 31, the tank body 31 is further provided with a feeding port 34, the feeding port 34 is fixed at the top of the tank body 31, a hot melting shaft 35 is further arranged in the tank body 31, the hot melting shaft 35 is connected with the hot melting motor 32, the hot melting shaft 35 is provided with a heating pipe 36 and a hot melting blade 37, the heating pipe 36 is sleeved with the hot melting shaft 35, the hot melting blade 37 penetrates through the heating pipe 36 and is fixedly connected with the hot melting shaft 35, and a hot melting door 38 is further fixed at the bottom of the tank body 31.

The coating machine 4 comprises a box body 41, the box body 41 is provided with a vibration motor 42 and a vibration screen 43, the vibration motor 42 is fixedly connected with the outer side wall of the box body 41, the vibration screen 43 is connected with the vibration motor 42, the box body 41 is further provided with a plurality of coating nozzles 44, and the coating nozzles 44 are fixedly connected with the box body 41.

Divide screen (5) includes the cabinet body (51), be equipped with one-level screen cloth (52), the real board of second 53 and two poles of the earth screen cloth (54) in the cabinet body (51), one-level screen cloth (52), the real board of second 53 and two poles of the earth screen cloth (54) and cabinet body (51) fixed connection, one-level screen cloth (52) still is connected with the real board of second 53, discharge gate (55) has still been seted up to the cabinet body (51) bottom.

The bottom of the mixer 1 is also provided with a discharge pump, the discharge pump is fixedly connected with the mixer body 11, and the coating machine 4 is also fixed with a coating pump 45.

The working principle of the invention is as follows:

preparing materials: weighing the raw materials in proportion; solid-liquid mixing: atomizing lactic acid, spraying the lactic acid into the solid-liquid mixing mechanism 12, mixing with the powdery silicon dioxide, adsorbing, and mixing to obtain a first mixture; solid-solid mixing: crushing and uniformly mixing the mixture I prepared in the last step with fumaric acid, citric acid, benzoic acid and beta-cyclodextrin in a solid-liquid mixing mechanism 12 to obtain a mixture II; granulating: and putting the mixture II into a granulating and screening machine 2 for granulation, sieving and grading, and removing the sieve and the sieve to obtain tablet granules. Coating preparation: putting prepared stearic acid and/or palmitic acid or acrylic resin and talcum powder and/or magnesium stearate into a hot melting machine 3 for hot melting and mixing to obtain coating liquid, and keeping the temperature for later use; coating: conveying the tablet granules into a coating machine 4 by using an electric pump 7, starting a spray gun in the coating machine 4 to perform spray coating on the tablet granules, and after the coating is finished, screening the tablet granules to obtain an acidulant granule finished product.

The implementation case is as follows:

test of

The inventor conducts the following tests on the obtained piglet feed compound additive:

test method

The method comprises the following steps of dividing the piglet feed into a treatment group and a control group, weighing 10g of piglet feed composite additive in the treatment group, weighing 10g of non-granulated coated powdery piglet feed composite additive in the control group, placing the piglet feed composite additive in a conical flask, and dissolving the piglet feed composite additive in 1L of distilled water. The pH value of the solution is measured by a pH meter every 30min for 5h, and the data is recorded.

Analysis of test results

As can be seen from fig. 1, the pH of the 1% aqueous solution of the treatment group (piglet feed additive complex) continuously and slowly decreased within 5h, whereas the pH profile of the 1% aqueous solution of the control group (piglet feed additive complex without the granulated coating powder) hardly changed within 5 h. Therefore, the piglet feed compound additive coated by the pelletization can slowly release the organic acid.

In summary, after reading the present disclosure, those skilled in the art can make various other corresponding changes without creative mental labor according to the technical solutions and concepts of the present disclosure, and all of them are within the protection scope of the present disclosure.

Claims

1. The piglet feed composite additive is characterized by comprising the following components in percentage by weight: 5-25% of lactic acid, 5-15% of citric acid, 5-15% of fumaric acid, 3-15% of silicon dioxide, 2-10% of benzoic acid, 3-15% of beta-cyclodextrin, 1.5-3% of talcum powder and/or magnesium stearate, and 5-60% of stearic acid and/or palmitic acid or acrylic resin.

2. The piglet feed composite additive according to claim 1, which comprises the following components in percentage by weight: 5-15% of lactic acid, 5-10% of citric acid, 5-10% of fumaric acid, 3-10% of silicon dioxide, 5-10% of benzoic acid, 3-10% of beta-cyclodextrin, 1.5-3% of talcum powder and/or magnesium stearate, and 20-60% of stearic acid and/or palmitic acid or acrylic resin.

3. The piglet feed composite additive according to claim 2, which comprises the following components in percentage by weight: 15% lactic acid, 10% citric acid, 10% fumaric acid, 10% silicon dioxide, 8% benzoic acid, 5% beta-cyclodextrin, 2% talc and/or magnesium stearate, 40% stearic acid and/or palmitic acid or acrylic resins.

4. The utility model provides a piglet feed composite additive production facility, a serial communication port, including mixing machine, pelletization screening machine, hot melt machine, capsule machine and branch sieve machine, mix machine, pelletization screening machine, capsule machine and branch sieve machine and connect gradually through the pipe-line fit, it is used for including solid-liquid mixture and solid mixing to mix the machine, the pelletization divides the sieve machine to be used for the mixture pelletization and screens in grades, it is used for semi-manufactured goods screening in grades to divide the sieve machine, the hot melt machine passes through the heat preservation pipe cooperation and is connected with the capsule machine, it still is equipped with the conveyer belt to divide the sieve machine below, fixedly connected with charge pump on the pipeline that pelletization divides sieve machine and capsule machine to connect, the conveyer belt is used for transporting finished product acidifying agent granule.

5. The piglet feed composite additive production equipment according to claim 4, wherein the mixer comprises a mixer body, the mixer body is provided with a solid-liquid mixing mechanism, a crushing mechanism and a solid-solid mixing mechanism, the mixer body is further provided with a liquid feeding port and a solid feeding port, the liquid feeding port and the solid feeding port are fixedly connected to the top of the mixer body, the mixer body is further provided with a partition plate, the partition plate is fixedly connected inside the mixer body, one side of the partition plate is further provided with a liquid outlet, the partition plate is used for separating the solid-liquid mixing mechanism and the solid-solid mixing mechanism, a baffle plate is further arranged in the mixer body, the baffle plate is connected to the inner side wall of the mixer body, the partition plate is provided with a solid-liquid stop door and a solid-solid stop door, the solid-liquid stop door and the solid stop door are connected with the partition plate, and the mixer body is further provided with a spray head, the atomizing head is arranged on one side of the solid-liquid mixing mechanism and is fixedly connected with the mixing machine body, and the bottom of the mixing machine body is connected with a mixing outlet.

6. The piglet feed compound additive production equipment according to claim 5, the solid-liquid mixing mechanism comprises a solid-liquid motor and a solid-liquid stirring component, the solid-liquid motor is fixed on the outer side wall of the mixing machine body, the solid-liquid stirring component comprises a stirring shaft and a stirring rod, the stirring shaft is connected with a solid-liquid motor, the stirring rods are uniformly distributed on the stirring shaft and are fixedly connected with the stirring shaft, the crushing mechanism comprises a crushing motor, a crushing hammer and a crushing shaft, the crushing motor is fixed on the outer side wall of the mixer body, the crushing shaft is connected with the crushing motor, the crushing hammers are uniformly distributed on the crushing shaft and fixedly connected with the crushing shaft, the solid-solid mixing mechanism comprises a solid-solid motor, a mixing shaft and mixing blades, the solid-solid motor is fixed on the outer side wall of the mixing machine body, the mixing shaft is connected with the solid-solid motor, and the mixing blades are fixed on the mixing shaft in a surrounding mode.

7. The piglet feed composite additive production device according to claim 4, wherein the granulating screening machine comprises a granulating machine body, a granulator is arranged in the granulating machine body and fixedly connected with the granulating machine body, a granulating plate is further arranged in the granulating machine body and connected with the granulating machine body, the granulating plate is further arranged below the granulating machine body and provided with a granulating outlet, a first sieve plate, a first solid plate and a second sieve plate are further arranged in the granulating machine body and fixedly connected with the granulating machine body, a circulating pipe is further fixed outside the granulating machine body, a circulating pump is fixed in the circulating pipe, and a screening outlet is further arranged at the bottom of the granulating machine body.

8. The piglet feed composite additive production device according to claim 4, wherein the hot melting machine comprises a tank body, the tank body is provided with a hot melting motor and a temperature sensor, the hot melting motor is fixedly connected with the tank body, the temperature sensor is fixed on the outer side wall of the tank body, the tank body is further provided with a feed opening, the feed opening is fixed on the top of the tank body, a hot melting shaft is further arranged in the tank body, the hot melting shaft is connected with the hot melting motor, the hot melting shaft is provided with a heating pipe and hot melting blades, the heating pipe is sleeved with the hot melting shaft, the hot melting blades penetrate through the heating pipe and are fixedly connected with the hot melting shaft, and a hot melting door is further fixed at the bottom of the tank body.

9. The piglet feed compound additive production device according to claim 4, wherein the coating machine comprises a box body, the box body is provided with a vibration motor and a vibration screen, the vibration motor is fixedly connected with the outer side wall of the box body, the vibration screen is connected with the vibration motor, the box body is further provided with a plurality of coating nozzles, and the coating nozzles are fixedly connected with the box body.

10. The piglet feed composite additive production device according to claim 4, wherein the screening machine comprises a cabinet body, a first-stage screen, a second solid plate and a two-stage screen are arranged in the cabinet body, the first-stage screen, the second solid plate and the two-stage screen are fixedly connected with the cabinet body, the first-stage screen is further connected with the second solid plate, and a discharge hole is formed in the bottom of the cabinet body.