A device for coating pig feed pellets to inhibit the maillard reaction

Abstract

The application discloses a kind of pig feed granule coating devices for inhibiting Maillard reaction, it is related to feed granule processing technical field, including: base, support backboard is set on base, the support backboard is sequentially provided with raw material mixing feeding mechanism, disc extrusion mechanism from top to bottom, and the coating structure is arranged below disc extrusion mechanism, positive charge inducer can be added in the raw material mixing feeding mechanism;The coating structure includes two groups of oppositely arranged processing channels.The application is combined by the combination of the disc extrusion mechanism and the coating structure, the disc extrusion mechanism can intermittently extrude several particles in linear dispersion, when entering processing channel, by the structural design of baffle channel, particle surface pretreatment, coating and drying solidification process can be sequentially carried out, by promoting the treatment effect of each stage, to enhance the coating barrier, block Maillard reaction.

Description

Technical Field

[0001] This invention relates to the field of feed pellet processing technology, specifically to a pig feed pellet coating device for inhibiting Maillard reactions. Background Technology

[0002] The core objective of inhibiting the Maillard reaction in feed is to maximize the bioavailability of essential amino acids such as lysine, thereby improving the nutritional value of the feed and the production performance of pigs. The Maillard reaction occurs during feed processing (especially high-temperature treatments such as extrusion, pelleting, and drying), causing amino acids such as lysine to bind with reducing sugars (such as glucose and lactose), forming complexes that are difficult for animals to digest and absorb. As disclosed in application number 202110009869.2, this invention includes a body, a speed-changing space on the left side of the body containing a speed-changing device, a feeding space on the right side containing a feeding device, and a mixing space below the speed-changing space containing a lifting device. This invention can lift the feed from the lower layer of the mixing tank to the upper layer for cooling, promoting heat dissipation, and reducing the mixing speed when amino acids are involved in the mixing process, thereby reducing frictional heat generation, inhibiting the Maillard reaction, and reducing the loss of amino acids in the feed. However, in practical applications, simply cooling and heat dissipation to suppress the Maillard reaction is not effective, and some Maillard reaction will still occur. Since the coating process will generate an insulating film on the surface of the pellets, thereby effectively suppressing the Maillard reaction, and can also reduce oxidation on the surface of feed pellets through the coating film, thus improving the quality and lifespan of the feed, a pig feed pellet coating device for suppressing the Maillard reaction is designed. Summary of the Invention

[0003] The purpose of this invention is to provide a pig feed pellet coating device for inhibiting the Maillard reaction. By combining a disc extrusion mechanism with a coating structure, the disc extrusion mechanism can intermittently extrude several linearly dispersed pellets, which are not easily stuck together. At the same time, when entering the processing channel, the structure design of the baffle channel allows for sequential pretreatment of the pellet surface, coating, and drying and curing processes. By promoting the processing effect at each stage, the coating barrier is enhanced, and the Maillard reaction is blocked.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a pig feed pellet coating device for inhibiting Maillard reactions, comprising: a base, a support plate disposed on the base, the support plate being sequentially arranged from top to bottom as a raw material mixing and feeding mechanism, a disc extrusion mechanism, and a coating structure disposed below the disc extrusion mechanism, wherein a positive charge inducer can be added to the raw material mixing and feeding mechanism; the coating structure comprising two sets of oppositely arranged processing channels, each set of processing channels comprising a guide frame, a first channel, a second flexible connection channel, a second channel, a first flexible connection channel, and a third channel sequentially connected from top to bottom; each of the first, second, and third channels is provided with a baffle channel, and a first conduit nozzle assembly, a second conduit nozzle assembly, and a third conduit nozzle assembly are sequentially arranged on the baffle channels within the first, second, and third channels; the first conduit nozzle assembly is connected to a cooling air blowing assembly for surface pretreatment of the extruded pellets; the second conduit nozzle assembly is connected to a coating liquid tank assembly for coating treatment; and a low-temperature hot air device connected to the third conduit nozzle assembly to promote cross-linking and curing of the film-forming material.

[0005] Preferably, the disc extrusion mechanism includes a mounting plate fixed to the support plate. A circular plate is fixed to the mounting plate via a connecting member in the middle. A mounting ring is wrapped around the outer circumference of the circular plate and rotatably mounted on the support plate. The circular plate divides the mounting ring into a front cavity and a rear cavity. Two mounting shafts penetrating the circular plate are rotatably mounted at both ends of the mounting plate. Extrusion rollers are fixed to the two mounting shafts in the front cavity, and a separating strip is fixed in the middle of the circular plate, tangential to the two extrusion rollers. A gear meshing mechanism is also provided between the two mounting shafts in the rear cavity and the mounting ring. An extrusion section is provided on the mounting ring located in the front cavity. The extrusion section has several annularly distributed extrusion holes. The two extrusion rollers form an extruded material channel along their own rotation direction and near the tangent on the inner side of the extrusion section. A second cut-off guide frame and a first cut-off guide frame are fixed to the two sets of guide frames. The second cut-off guide frame and the first cut-off guide frame are tangential to the outer wall of the extrusion section and form two cutting surfaces for extruded material. Each cutting surface is positioned in front of the extruded material channel with the extrusion section rotating in its forward direction.

[0006] Preferably, the gear meshing mechanism includes internal teeth fixed on the inner wall of the mounting ring, and first gears respectively fixed on two mounting shafts, each of the first gears meshing with the internal teeth for transmission; The support plate is also provided with a meshing drive mechanism for rotating the mounting ring. The meshing drive mechanism includes a first motor fixed on the support plate, a drive gear fixed on the output shaft of the first motor, and external teeth arranged in a ring on the outer wall of the mounting ring. The external teeth mesh with the drive gear for transmission.

[0007] Preferably, the deflection channel includes a first guide plate and a second guide plate. The first guide plate and the second guide plate are arranged opposite each other and staggered by a certain distance. The opposite surfaces of the first guide plate and the second guide plate are continuous convex and concave surfaces. At the vertex of each convex surface, the surface is recessed inward to form an airflow transmission groove, which is used to place the first duct nozzle assembly, the second duct nozzle assembly, and the third duct nozzle assembly, respectively. An injection port is provided at the opening of the airflow transmission groove.

[0008] Preferably, the first duct nozzle assembly, the second duct nozzle assembly, and the third duct nozzle assembly have the same structure. The first duct nozzle assembly includes a connecting pipe and two mounting pipes fixed and connected to the connecting pipe. Each mounting pipe is connected to a vertically arranged nozzle, and each nozzle is located at the inner end of the airflow transmission groove.

[0009] Preferably, the cooling blower assembly includes a cooler fixed to the back of the support plate and opposite to the first channel. Two connecting pipes extending from the top of the cooler and communicating with the location of the first channel are respectively provided on both sides. The top of the two sets of first channels is provided with a return channel. The two sides of the return channel are respectively provided with return ports extending into the two sets of processing channels. The two return ports converge at the rear end of the return channel and are provided with a suction pump and a return pipe communicating with the suction pump. One end of the return pipe extends to the lower part of the cooler and communicates with it.

[0010] Preferably, the coated liquid tank assembly includes a tank body fixed to a support member, a rotatable mounting rod disposed inside the tank body, a stirring rod for mixing the liquid on the mounting rod, a feed inlet on the tank body for injecting the liquid, and a pump body disposed on the tank body. A filter screen can be disposed in the channel between the tank body and the pump body. The output end of the pump body is connected to a liquid guide pipe, and the end of the liquid guide pipe away from the tank body is connected to a connecting pipe on a second channel.

[0011] Preferably, the base is further provided with a lifting transmission frame for tilting and lifting the two sets of third channels to change the curvature of the processing channel. The lifting transmission frame includes a support member fixed to the lower part of the support plate, a transmission triangular block fixed to the lower part of the support member, and a movable bidirectional rack installed on the upper part of the support member. A transmission frame body is fixed to the end of the bidirectional rack near the transmission triangular block. The transmission frame body has an inverted T-shaped structure and a track opened in the transverse section of the transmission frame body. Two horizontally sliding wedges are installed opposite each other in the track. A sliding groove is opened on the opposite surface of each of the third channels. A transmission inclined surface that fits with the hypotenuse of the transmission triangular block is provided on the opposite surface of the two wedges. A top rod is fixed to the opposite end of the two wedges. Each top rod extends through the end of the track into the sliding groove and is hinged to a slider. A spring is connected to the outer wall of the top rod between each wedge and the inner end of the track. A third motor is fixed to the support plate. The output shaft of the third motor is fixed with a second gear that meshes with the outer rack of the bidirectional rack.

[0012] Preferably, the end of the mounting rod near the support plate extends to the outer wall of the tank and is fixed with a third gear, which meshes with the inner rack of the bidirectional rack for transmission.

[0013] Preferably, the raw material mixing and feeding mechanism includes a horizontal plate fixed to the support plate, and a mixing box fixed to the horizontal plate. The mixing box is equipped with stirring blades inside, and a gear power box is provided on the outer wall of the mixing box for driving the stirring blades. The mixing box is also connected to a feeding hopper at the bottom of the mixing box. A conveying pipe is connected between the feeding hopper and the disc extrusion mechanism. A spiral conveying rod is provided inside the conveying pipe, and a second motor is fixed to the end of the conveying pipe. The output shaft of the second motor extends into the conveying pipe and is fixed to one end of the spiral conveying rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention combines a disc extrusion mechanism with a coating structure. The disc extrusion mechanism can intermittently extrude several linearly dispersed particles, which are not easily stuck together. At the same time, when entering the processing channel, the particle surface pretreatment, coating and drying and curing processes can be carried out in sequence through the structure design of the baffle channel. This promotes the processing effect at each stage, enhances the coating barrier and blocks the Maillard reaction.

[0015] 2. Utilizing the charged properties of particles, through Ca... 2+ Adsorption improves the surface charge of particles, enhances the binding force with anionic coating materials, and further improves coating efficiency and quality.

[0016] 3. By providing a disc extrusion mechanism, a linear single-batch extrusion process is achieved. Especially for particle coating, it can effectively avoid particle adhesion and accumulation, and improve the particle coating effect.

[0017] 4. In another embodiment of the present invention, the opposing surfaces of the first guide plate and the second guide plate are continuous convex and concave surfaces. At the apex of each convex surface, the airflow is recessed inward to form an airflow transmission groove. When the airflow is accelerated at the airflow transmission groove and ejected upward at each nozzle, its jetting force and direction can wrap around the falling particles and cause the particles to rotate. By passing through multiple convex surfaces, multiple processing can be performed, thereby achieving a better coating effect. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 for Figure 1 A partial disassembly diagram; Figure 3 This is a schematic diagram of the disassembled front structure of the disc extrusion mechanism of the present invention; Figure 4 This is a schematic diagram of the rear disassembly structure of the disc extrusion mechanism of the present invention; Figure 5 This is a partially enlarged structural diagram of the cooling blower assembly of the present invention; Figure 6 for Figure 2 A partially enlarged structural diagram; Figure 7 This is a partial cross-sectional structural diagram of the present invention; Figure 8 This is a schematic diagram of the disassembled structure of the first duct nozzle assembly and the baffle channel of the present invention; Figure 9 This is a partially enlarged schematic diagram of the baffle channel structure of the present invention; Figure 10 This is a schematic diagram of the extrusion state distribution structure of the disc extrusion mechanism of the present invention.

[0019] In the diagram: 111, base; 112, support plate; 211. Extrusion section; 212. Extrusion orifice; 213. First cut-off guide frame; 214. Second cut-off guide frame; 215. Drive gear; 216. First motor; 217. External gear; 218. Mounting ring; 219. Internal gear; 220. Extrusion roller; 221. Mounting plate; 222. Mounting shaft; 224. Circular plate; 225. First gear; 2901. Separator strip; 311. Mixing box; 312. Horizontal plate; 313. Stirring blade; 314. Gear power box; 315. Feed hopper; 411. Second motor; 412. Conveying pipe; 500, guide frame; 511, first channel; 512, first flexible connection channel; 5120, first guide plate; 513, second flexible connection channel; 5130, second guide plate; 5131, injection nozzle; 5132, airflow transmission groove; 5140. Nozzle; 5141. Mounting pipe; 5142. Connecting fitting; 5150, Second channel; 5160, Third channel; 5161, Slide groove; 611. Liquid inlet pipe; 612. Return pipe; 613. Refrigerator; 711. Feed inlet; 712. Tank body; 713. Mounting rod; 714. Stirring rod; 715. Liquid guide pipe; 716. Pump body; 811. Transmission triangle block; 812. Second gear; 813. Third motor; 814. Spring; 815. Wedge block; 816. Transmission frame; 817. Push rod; 818. Track; 819. Double rack; 820. Third gear; 821. Support component; 1011, reflux channel; 1012, suction pump; 1013, reflux port. Detailed Implementation

[0020] In the description of this invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. The various embodiments of this invention are described in detail below with reference to the accompanying drawings.

[0021] Example 1

[0022] Please see Figures 1 to 10The present invention preferably provides a technical solution: a pig feed pellet coating device for inhibiting Maillard reactions, comprising: a base 111, a support plate 112 disposed on the base 111, the support plate 112 having a raw material mixing and feeding mechanism, a disc extrusion mechanism, and a coating structure disposed below the disc extrusion mechanism, wherein a positive charge inducer can be added to the raw material mixing and feeding mechanism, and the disc extrusion mechanism can intermittently and linearly extrude pellets; the coating structure includes two sets of oppositely arranged processing channels, each set of processing channels including a guide frame 500, a first channel 511, a second flexible connection channel 513, a second channel 5150, a first flexible connection channel 512, and a third channel 5160 connected sequentially from top to bottom, the guide frame 500 being fixed on the support plate 112 for extruding pellets. Within the import processing channel, the second flexible connection channel 513 and the first flexible connection channel 512 are used for flexible connections between the first channel 511, the second channel 5150, and the third channel 5160, respectively. Each of the first channel 511, the second channel 5150, and the third channel 5160 is equipped with a baffle channel, and a first conduit nozzle assembly, a second conduit nozzle assembly, and a third conduit nozzle assembly are sequentially arranged on the baffle channels within the first channel 511, the second channel 5150, and the third channel 5160. The first conduit nozzle assembly is connected to a cooling air blowing assembly for surface pretreatment of the extruded particles. The second conduit nozzle assembly is connected to a coating liquid tank assembly, in which a negative charge inducer can be added. A low-temperature hot air device is connected to the third conduit nozzle assembly to promote cross-linking and curing of the film-forming material.

[0023] In this application, the pig feed pellet coating process for inhibiting the Maillard reaction needs to construct a coating barrier and block the Maillard reaction through core steps such as material selection, pretreatment, precise coating, and drying and curing. The first design point is that, Figure 1 As shown, in the raw material mixing and feeding mechanism, feed-grade calcium carbonate is preferably added as a positive charge inducer. This is a food-grade or industrial-grade purified, non-toxic calcium source commonly used in pig feed, added at a dosage of 0.5%-3%. It serves as a basic mineral additive and simultaneously... 2+ Adsorption improves the surface charge of particles and enhances their binding force with anionic coated materials such as alginate.

[0024] Secondly, through the combination of the disc extrusion mechanism and the coating structure, the disc extrusion mechanism can intermittently extrude several linearly dispersed particles. After entering the processing channel, the particles are not easily stuck together. Furthermore, under the action of the processing channel, which consists of a connected guide frame 500, a first channel 511, a second flexible connection channel 513, a second channel 5150, a first flexible connection channel 512, and a third channel 5160, as shown... Figure 1 , 7As shown, the first channel 511, the second channel 5150 and the third channel 5160 are all provided with baffle channels, which cooperate with the first duct nozzle assembly, the second duct nozzle assembly and the third duct nozzle assembly arranged sequentially on the baffle channels in the first channel 511, the second channel 5150 and the third channel 5160; the surface pretreatment, coating process and drying and curing of the blowing assembly can be performed sequentially. The third point is that during the coating process, through the combined action of the second conduit nozzle assembly and the coating liquid tank assembly, the coating liquid tank assembly contains the coating liquid, preferably chitosan alginate, which is an anionic polysaccharide. This coating liquid reacts with the aforementioned Ca... 2+ When feed pellets are combined and coated, the attraction between opposite charges can achieve a better and more effective coating effect, and can also adsorb positively charged metal ions such as Fe on the pellets. 2+ To further inhibit the Maillard reaction; or to form a composite formulation under the stirring and mixing action of the coating liquid tank assembly, such as antioxidant substances: such as tea polyphenols and rosemary extract to scavenge free radicals and block the reaction chain. When the solution needs to be modified, positive and negative charge inducers can also be added to achieve a better coating effect.

[0025] Example 2

[0026] As another embodiment of the present invention, a disc extrusion mechanism is provided. The disc extrusion mechanism includes a mounting plate 221 fixed on a support plate 112. A circular plate 224 is fixed to the mounting plate 221 via a connecting member in the middle. A mounting ring 218 is wrapped around the outer periphery of the circular plate 224 and rotatably mounted on the support plate 112. The circular plate 224 divides the mounting ring 218 into a front cavity and a rear cavity. Two mounting shafts 222 are rotatably mounted at both ends of the mounting plate 221, penetrating the circular plate 224. Extrusion rollers 220 are respectively fixed on the two mounting shafts 222 in the front cavity, and a spacer strip 2901 is tangential to the two extrusion rollers 220 and fixed in the middle of the circular plate 224. Two spacers 2901 are fixed in the rear cavity. A gear meshing mechanism is also provided between the mounting shaft 222 and the mounting ring 218; an extrusion section 211 is provided on the mounting ring 218 where the front cavity is located, and several annularly distributed extrusion holes 212 are provided on the extrusion section 211. Two extrusion rollers 220 form extrusion material channels at positions close to the inner tangent of the extrusion section 211 along their own rotation direction; a second cut-off guide frame 214 and a first cut-off guide frame 213 are fixed on the two sets of guide frames 500 respectively. The second cut-off guide frame 214 and the first cut-off guide frame 213 are tangent to the outer wall of the extrusion section 211 and form two cutting surfaces for extruding material. Each cutting surface is positioned in front of the extrusion material channel with the extrusion section 211 rotating in its forward direction.

[0027] Furthermore, the gear meshing mechanism includes internal teeth 219 fixed on the inner wall of the mounting ring 218, and first gears 225 respectively fixed on two mounting shafts 222. Each first gear 225 meshes with the internal teeth 219 for transmission. The support plate 112 is also provided with a meshing drive mechanism for rotating the mounting ring 218. The meshing drive mechanism includes a first motor 216 fixed on the support plate 112. The output shaft of the first motor 216 is fixed with a drive gear 215, and external teeth 217 are arranged in a ring on the outer wall of the mounting ring 218. The external teeth 217 mesh with the drive gear 215 for transmission.

[0028] In this embodiment, a disc extrusion mechanism is provided, such as... Figure 2 , 3 As shown in Figure 4, under the action of the gear meshing mechanism and the meshing drive mechanism, firstly, the first motor 216 can drive the drive gear 215 to rotate. Under the action of the drive gear 215 and the external teeth 217, the mounting ring 218 is further driven to rotate. Since the circular plate 224 is fixedly set and rotatably mounted with the mounting ring 218, when the mounting ring 218 rotates, under the action of the first gear 225 and the internal teeth 219, the extrusion roller 220 where the mounting shaft 222 is located can be driven to rotate. Figure 3 , 10 As shown, when the mounting ring 218 drives the extrusion section 211 to rotate counterclockwise, the extrusion rollers 220 on both the left and right sides rotate counterclockwise. The left extrusion roller 220 drives the material to form an extrusion material channel A above the inner tangent position of the extrusion section 211, and extrudes it through the extrusion hole 212 opened on the extrusion section 211. Since the extrusion section 211 itself also rotates counterclockwise, when the extruded material reaches the second cut-off guide frame 214 and the first cut-off guide frame 213, it can be cut off to realize one extrusion process, forming a linear array of several particles. The right extrusion roller 220 drives the material to form an extrusion material channel B below the inner tangent position of the extrusion section 211, thereby realizing a linear single batch small extrusion process. Especially for particle coating, it can effectively avoid the adhesion and accumulation between particles and improve the particle coating effect.

[0029] Example 3

[0030] In another embodiment of the present invention, the deflection channel includes a first guide plate 5120 and a second guide plate 5130. The first guide plate 5120 and the second guide plate 5130 are arranged opposite each other and staggered by a certain distance. The opposite surfaces of the first guide plate 5120 and the second guide plate 5130 are continuous convex and concave surfaces. At the vertex of each convex surface, it is recessed inward to form an airflow transmission groove 5132, which is used to place the first duct nozzle assembly, the second duct nozzle assembly, and the third duct nozzle assembly, respectively. An injection port 5131 is provided at the opening of the airflow transmission groove 5132.

[0031] Furthermore, the first duct nozzle assembly, the second duct nozzle assembly, and the third duct nozzle assembly have the same structure. The first duct nozzle assembly includes a connecting pipe 5142 and two mounting pipes 5141 that are fixed to and connected to the connecting pipe 5142. Each mounting pipe 5141 is connected to a vertically arranged nozzle 5140, and each nozzle 5140 is located at the inner end of the airflow transmission groove 5132.

[0032] In this embodiment, by further setting a baffle channel in the processing channel and combining it with the first duct nozzle assembly, the second duct nozzle assembly, and the third duct nozzle assembly, such as... Figure 6 , 7 As shown in Figure 8, the extruded particles sequentially enter the tortuous channel formed by the second guide plate 5130 and the first guide plate 5120, which can delay the particle residence time. Simultaneously, the opposing surfaces of the first guide plate 5120 and the second guide plate 5130 are continuous convex and concave surfaces. At the apex of each convex surface, an inward indentation forms an airflow transmission groove 5132. The airflow transmission groove 5132 is a flow channel that is wider at the top and narrower at the bottom. Figure 8 , 9 As shown, at the first channel 511, it is connected to the connecting pipe 5142 to form a cooling air blowing assembly. Each second guide plate 5130 can generate a low-temperature cooling airflow in the airflow transmission groove 5132. When the cooling airflow is accelerated at the airflow transmission groove 5132 and sprayed upward at each nozzle 5131, its spray force and direction can wrap around the falling particles and make the particles rotate. After passing through multiple convex surfaces, multiple processing can occur, thereby achieving cooling pretreatment. At the second channel 5150, the second conduit nozzle assembly is connected to the coating liquid tank assembly, which can generate a coating liquid flow in the airflow transmission channel 5132. When the coating liquid flow is ejected at the airflow transmission channel 5132 and ejected upward at each spray port 5131, the same efficient coating process as described above is achieved. At the third channel 5160, the third conduit nozzle assembly is connected to the low-temperature hot air device in the prior art, which can quickly promote the drying, curing and forming of the film-forming material.

[0033] Example 4

[0034] In another embodiment of the present invention, the cooling blower assembly includes a cooler 613 fixed to the back of the support plate 112 and opposite to the first channel 511. Two connecting pipes 5142 extending from the top of the cooler 613 communicate with the location of the first channel 511. A return channel 1011 is provided at the top of the two sets of first channels 511. Return ports 1013 extending into the two sets of processing channels are provided on both sides of the return channel 1011. The two return ports 1013 converge at the rear end of the return channel 1011 and are provided with a suction pump 1012 and a return pipe 612 communicating with the suction pump 1012. One end of the return pipe 612 extends to the lower part of the cooler 613 and communicates with it.

[0035] In this embodiment, such as Figure 2 , 5 As shown in Figure 7, when the liquid inlet pipes 611 on both sides of the cooling blower assembly are connected to the connecting pipe 5142 on the first guide nozzle assembly, the cooling airflow acts on the particles in the upward direction to cool them. After being pumped by the suction pump 1012, the airflow is discharged at the return port 1013 where the return channel 1011 is located. The cooled airflow flows back to the cooler 613 through the return pipe 612. After being cooled by the cooler 613, it flows back to the liquid inlet pipe 611 again, realizing a cold cycle, which can quickly cool and pre-treat the extruded particles.

[0036] Example 5

[0037] In another embodiment of the present invention, the coated liquid tank assembly includes a tank body 712, which is fixed on a support member 821, and a rotatable mounting rod 713 disposed inside the tank body 712. The mounting rod 713 is provided with a stirring rod 714 for stirring and mixing the liquid, and a feed inlet 711 disposed on the tank body 712 for injecting the liquid, and a pump body 716 disposed on the tank body 712. A filter screen can be disposed in the channel between the tank body 712 and the pump body 716. The output end of the pump body 716 is connected to a liquid guide pipe 715. The end of the liquid guide pipe 715 away from the tank body 712 is connected to a connecting pipe 5142 on the second channel 5150.

[0038] Through further configuration of the coated liquid tank assembly, such as Figure 1 , 7 As shown, the coating solution can be added through the feed inlet 711. When the feed inlet is closed, the coating solution can be stirred and mixed by the rotation of the mounting rod 713 and the stirring rod 714.

[0039] Furthermore, a lifting transmission frame is also provided on the base 111 for tilting and lifting the two sets of third channels 5160 to change the curvature of the processing channel. The lifting transmission frame includes a support member 821 fixed to the lower part of the support plate 112, a transmission triangular block 811 fixed to the lower part of the support member 821, and a movable bidirectional rack 819 installed on the upper part of the support member 821. A transmission frame body 816 is fixed to the end of the bidirectional rack 819 near the transmission triangular block 811. The transmission frame body 816 has an inverted T-shaped structure and a track 818 opened in the transverse section of the transmission frame body 816. Two horizontally sliding objects are installed in the track 818. Wedge 815; each third channel 5160 has a groove 5161 on its opposite side, and the opposite sides of the two wedges 815 are provided with a transmission inclined surface that fits with the hypotenuse of the transmission triangular block 811. The two wedges 815 are respectively fixed with push rods 817 at their opposite ends. Each push rod 817 extends through the end of the track 818 into the groove 5161 and is hinged to a slider. A spring 814 is connected to the outer wall of the push rod 817 between the inner end of each wedge 815 and the track 818; and a third motor 813 is fixed on the support plate 112. The output shaft of the third motor 813 is fixed with a second gear 812 that meshes with the outer rack of the bidirectional rack 819.

[0040] Furthermore, the end of the mounting rod 713 near the support plate 112 extends to the outer wall of the tank 712 and is fixed with a third gear 820, which meshes with the inner rack of the bidirectional rack 819 for transmission.

[0041] In this embodiment, a further lifting transmission frame is provided, such as... Figure 6 As shown, when the third motor 813 is working, it can drive the second gear 812 to rotate, which in turn drives the transmission frame 816 where the bidirectional rack 819 is located to move up and down. At this time, the two wedges 815 move relative to each other or away from each other along the track 818. When the transmission frame 816 drives the top rod 817 to rise, under the transmission connection of the transmission triangular block 811 and the wedge 815 on both sides, due to the connection of the second soft connection channel 513 and the first soft connection channel 512, the third channel 5160 on both sides is expanded and lifted, thereby realizing the change of angle between the third channel 5160 and the second channel 5150, thereby realizing the deformation and deflection of the flow channel, and thus changing the residence time of the particles in the processing channel and the operating state.

[0042] Example 6

[0043] In another embodiment of the present invention, the raw material mixing and feeding mechanism includes a horizontal plate 312 fixed on a support plate 112, and a mixing box 311 fixed to the horizontal plate 312. The mixing box 311 is provided with a stirring blade 313 inside, and a gear power box 314 is provided on the outer wall of the mixing box 311 for driving the stirring blade 313 to run. The feeding bin 315 is connected to the bottom of the mixing box 311. A conveying pipe 412 is connected between the feeding bin 315 and the disc extrusion mechanism. A spiral conveying rod is provided inside the conveying pipe 412, and a second motor 411 is fixed to the end of the conveying pipe 412. The output shaft of the second motor 411 extends into the conveying pipe 412 and is fixed to one end of the spiral conveying rod.

[0044] Through a further designed raw material mixing and feeding mechanism, such as Figure 1 As shown, under the action of the gear power box 314, the stirring blade 313 can be driven to rotate, thereby achieving the mixing and blending of the raw materials. The gear power box 314 can be equipped with a gear drive assembly, which is a mature existing technology. Under the action of the feed bin 315, the material enters the conveying pipe 412. When the second motor 411 is working, it can drive the spiral conveying rod to move spirally, thereby pushing the material into the extrusion section 211. The conveying pipe 412 can act in the middle of the extrusion section 211, and the material can enter the upper and lower parts of the extrusion section 211.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of a unit. Detachable installation can take many forms, such as through a combination of plug-in and snap-fit ​​connections, or through bolt connections.

[0046] In addition, all the connections / connections mentioned in the article do not refer to direct connection of components, but rather to the formation of a better connection structure by adding or removing connecting accessories according to the specific implementation situation.

[0047] The above embodiments, which describe the specific features of the present invention, are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made to the present invention by those skilled in the art based on the above description of the invention shall fall within the scope of protection of the present invention.

Claims

1. A device for coating granules of pig feed to inhibit the Maillard reaction, characterised in that, include: The base (111) has a support plate (112) on it. The support plate (112) is provided with a raw material mixing and feeding mechanism, a disc extrusion mechanism and a coating structure below the disc extrusion mechanism in sequence from top to bottom. A positive charge inducer is added to the raw material mixing and feeding mechanism. The coating structure includes two sets of processing channels arranged opposite each other. Each set of processing channels includes a guide frame (500), a first channel (511), a second soft connection channel (513), a second channel (5150), a first soft connection channel (512), and a third channel (5160) connected from top to bottom. The first channel (511), the second channel (5150) and the third channel (5160) are all provided with baffle channels, and the first duct nozzle assembly, the second duct nozzle assembly and the third duct nozzle assembly are sequentially arranged on the baffle channels in the first channel (511), the second channel (5150) and the third channel (5160); The first conduit nozzle assembly is connected to a cooling blower assembly for surface pretreatment of extruded particles; the second conduit nozzle assembly is connected to a coating liquid tank assembly for coating treatment; and a low-temperature hot air device is connected to the third conduit nozzle assembly to promote cross-linking and curing of the film-forming material. The flow deflection channel includes a first guide plate (5120) and a second guide plate (5130). The first guide plate (5120) and the second guide plate (5130) are arranged opposite each other and staggered by a certain distance. The opposite surfaces of the first guide plate (5120) and the second guide plate (5130) are continuous convex and concave surfaces. At the vertex of each convex surface, it is recessed inward to form an airflow transmission groove (5132) for placing the first duct nozzle assembly, the second duct nozzle assembly, and the third duct nozzle assembly, respectively. An injection port (5131) is provided at the opening of the airflow transmission groove (5132). The base (111) is also provided with a lifting transmission frame for tilting and lifting the two sets of third channels (5160) to change the curvature of the processing channel. The lifting transmission frame includes a support member (821) fixed to the lower part of the support plate (112), a transmission triangular block (811) fixed to the lower part of the support member (821), and a movable bidirectional rack (819) installed on the upper part of the support member (821). The bidirectional rack (819) is fixed with a transmission frame body (816) at the end near the transmission triangular block (811). The transmission frame body (816) has an inverted T structure and a track (818) opened in the transverse section of the transmission frame body (816). Two horizontally sliding wedges (815) are installed opposite each other in the track (818). Each of the third channels (5160) has a groove (5161) on its opposite side. The two wedges (815) have a transmission inclined surface that fits against the hypotenuse of the transmission triangular block (811) on their opposite sides. The two wedges (815) are respectively fixed with a push rod (817). Each push rod (817) extends through the end of the track (818) into the groove (5161) and is hinged to a slider. A spring (814) is connected to the outer wall of the push rod (817) between the wedge (815) and the inner end of the track (818). A third motor (813) is fixed on the support plate (112). The output shaft of the third motor (813) is fixed with a second gear (812) that meshes with the outer rack of the bidirectional rack (819).

2. The apparatus for coating of pig feed pellets to inhibit Maillard reaction according to claim 1, wherein: The disc extrusion mechanism includes a mounting plate (221) fixed on the support plate (112). The mounting plate (221) is fixed with a circular plate (224) by a connecting piece in the middle. A mounting ring (218) is wrapped around the outer periphery of the circular plate (224) and rotatably mounted on the support plate (112). The circular plate (224) divides the mounting ring (218) into a front cavity and a rear cavity. Two mounting shafts (222) that penetrate the circular plate (224) are rotatably mounted at both ends of the mounting plate (221). Extrusion rollers (220) are fixed on the two mounting shafts (222) in the front cavity, and a separation strip (2901) is fixed in the middle of the circular plate (224) and tangential to the two extrusion rollers (220). A gear meshing mechanism is also provided between the two mounting shafts (222) in the rear cavity and the mounting ring (218). An extrusion section (211) is provided on the mounting ring (218) where the front cavity is located. The extrusion section (211) has several annularly distributed extrusion holes (212). Two extrusion rollers (220) form extrusion material channels along their own rotation direction and at positions close to the inner tangent of the extrusion section (211). Two sets of guide frames (500) are respectively fixed with a second cut-off guide frame (214) and a first cut-off guide frame (213). The second cut-off guide frame (214) and the first cut-off guide frame (213) are tangent to the outer wall of the extrusion section (211) and form two cutting surfaces of the extruded material. Each cutting surface is placed in front of the extruded material channel with the extrusion section (211) rotating in the forward direction.

3. A device for coating pellets of swine feed to inhibit the Maillard reaction according to claim 2, wherein: The gear meshing mechanism includes internal teeth (219) fixed on the inner wall of the mounting ring (218) and first gears (225) respectively fixed on two mounting shafts (222), each of the first gears (225) meshing with the internal teeth (219) for transmission; The support plate (112) is also provided with a meshing drive mechanism for rotating the mounting ring (218). The meshing drive mechanism includes a first motor (216) fixed on the support plate (112). The output shaft of the first motor (216) is fixed with a drive gear (215) and an external tooth (217) arranged in a ring on the outer wall of the mounting ring (218). The external tooth (217) meshes with the drive gear (215) for transmission.

4. The apparatus for coating of pig feed pellets to inhibit Maillard reaction according to claim 1, wherein: The first duct nozzle assembly, the second duct nozzle assembly, and the third duct nozzle assembly have the same structure. The first duct nozzle assembly includes a connecting pipe (5142) and two mounting pipes (5141) that are fixed and connected to the connecting pipe (5142). Each mounting pipe (5141) is connected to a vertically arranged nozzle (5140), and each nozzle (5140) is located at the inner end of the airflow transmission groove (5132).

5. The pig feed pellet coating device for inhibiting the Maillard reaction according to claim 1, characterized in that: The cooling blower assembly includes a cooler (613) fixed to the back of the support plate (112) and opposite to the first channel (511). Two connecting pipes (5142) extending from the top of the cooler (613) communicate with the location of the first channel (511). A return channel (1011) is provided at the top of the two sets of first channels (511). A return port (1013) extending into the two sets of processing channels is provided on both sides of the return channel (1011). The two return ports (1013) converge at the rear end of the return channel (1011) and are provided with a suction pump (1012) and a return pipe (612) communicating with the suction pump (1012). One end of the return pipe (612) extends to the lower part of the cooler (613) and communicates with it.

6. The pig feed pellet coating device for inhibiting the Maillard reaction according to claim 1, characterized in that: The coated liquid tank assembly includes a tank body (712) fixed on a support member (821), and a rotatable mounting rod (713) disposed inside the tank body (712). The mounting rod (713) is provided with a stirring rod (714) for stirring and mixing the liquid, and a feed inlet (711) disposed on the tank body (712) for injecting the liquid, and a pump body (716) disposed on the tank body (712). A filter screen is provided in the channel between the tank body (712) and the pump body (716). The output end of the pump body (716) is connected to a liquid guide pipe (715). The end of the liquid guide pipe (715) away from the tank body (712) is connected to a connecting pipe fitting (5142) on the second channel (5150).

7. The pig feed pellet coating device for inhibiting the Maillard reaction according to claim 6, characterized in that: The end of the mounting rod (713) near the support plate (112) extends to the outer wall of the tank (712) and is fixed with a third gear (820), which meshes with the inner rack of the bidirectional rack (819) for transmission.

8. The pig feed pellet coating device for inhibiting the Maillard reaction according to claim 1, characterized in that: The raw material mixing and feeding mechanism includes a horizontal plate (312) fixed on the support plate (112) and a mixing box (311) fixed to the horizontal plate (312). The mixing box (311) is provided with a stirring blade (313) inside and a gear power box (314) provided on the outer wall of the mixing box (311) for driving the stirring blade (313) to run. And a feed hopper (315) connected to the bottom of the mixing box (311), the feed hopper (315) is connected to the disc extrusion mechanism by a conveying pipe (412), a spiral conveying rod is provided in the conveying pipe (412), and a second motor (411) is fixed at the end of the conveying pipe (412). The output shaft of the second motor (411) extends into the conveying pipe (412) and is fixed to one end of the spiral conveying rod.

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